Sewage waste heat recovery heat exchange mechanism and working method

Abstract

The application discloses a sewage waste heat recovery and heat exchange mechanism and a working method in the technical field of sewage heat exchange devices. The sewage waste heat recovery and heat exchange mechanism comprises a base, a heat exchanger is fixedly connected to the upper end of the base, the heat exchanger comprises mounting plates and heat exchange fins, the mounting plates are fixedly connected to the upper end of the base, the heat exchange fins are fixedly connected between the mounting plates, a support plate is fixedly connected to the upper end of the mounting plate, a sludge filtering device is fixedly connected to the upper end of the support plate, the sludge filtering device comprises a filtering cylinder fixedly connected to the upper end of the support plate, a rotating column is rotatably connected in the filtering cylinder, filtering plates are fixedly connected to the circumferential surface of the rotating column, a plurality of filtering plates are arranged, a fixing rod is fixedly connected to the inner wall of the filtering cylinder, a scraping box is fixedly connected to the end of the fixing plate away from the filtering cylinder, and the scraping box is slidably connected with the filtering plates. The sewage heat exchange mechanism has the advantages of simple structure and the effect of sewage heat exchange can be achieved through simple operation.

Description

Technical Field

[0001] This invention relates to the field of wastewater heat exchange device technology, and in particular to a wastewater waste heat recovery heat exchange mechanism and its working method. Background Technology

[0002] In daily production and life, various types of wastewater containing high heat are generated. For example, coal mining enterprises produce a large amount of bathing wastewater, and thermal power plants produce a lot of boiler wastewater and other drainage, which are often directly discharged. This not only wastes water resources and energy, but also causes certain thermal pollution to the natural environment.

[0003] When wastewater undergoes heat exchange, it enters the heat exchanger. However, wastewater contains a large number of impurities. If it enters the heat exchanger directly, it can easily cause blockages, requiring a lot of time for maintenance and cleaning, thus affecting the heat exchange efficiency.

[0004] Therefore, the present invention provides a wastewater waste heat recovery heat exchange mechanism and working method to solve the problem that wastewater contains a large number of impurities, which can easily cause blockage of the heat exchanger if it enters the heat exchanger directly. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater waste heat recovery heat exchange mechanism and working method to solve the problem that wastewater contains a large number of impurities, which can easily cause blockage of the heat exchanger if it enters the heat exchanger directly.

[0006] To address the aforementioned technical problems, this invention provides a wastewater waste heat recovery heat exchange mechanism, comprising a base, a heat exchanger fixedly connected to the upper end of the base, the heat exchanger including an mounting plate and heat exchange plates, a support plate fixedly connected to the upper end of the mounting plate, a sludge filtration device fixedly connected to the upper end of the support plate, a filter cylinder fixedly connected to the upper end of the support plate, a rotating column rotatably connected inside the filter cylinder, filter plates fixedly connected to the circumferential surface of the rotating column, multiple filter plates, a fixing rod fixedly connected to the inner wall of the filter cylinder, and a scraper box fixedly connected to the end of the fixing plate away from the filter cylinder, the scraper box being slidably connected to the filter plate.

[0007] Preferably, a motor is fixedly connected to the upper end of the support plate, a first sprocket is fixedly connected to the output end of the motor, a second sprocket is fixedly connected to the circumferential surface of the rotating column, and the first sprocket and the second sprocket are connected by a first chain.

[0008] Preferably, a water pump and a collection box are fixedly connected to the upper end of the support plate, an input pipe is fixedly connected to the input and output ends of the water pump, the end of the input pipe away from the water pump is fixedly connected to the collection box, a connecting pipe is fixedly connected to the upper end of the collection box, the end of the connecting pipe away from the collection box is fixedly connected to the scraper box, and an output pipe is fixedly connected to the output end of the water pump.

[0009] Preferably, a support rod is fixedly connected to the upper end of the support base, a filter box is fixedly connected to the upper end of the support rod, and a filter screen is fixedly connected inside the filter box.

[0010] Preferably, a reciprocating screw and a driven rod are rotatably connected inside the filter box. A cleaning plate is threadedly connected to the circumferential surface of the reciprocating screw. The cleaning plate is slidably connected to the filter screen. A pusher plate is fixedly connected to the circumferential surface of the driven rod. A collection box is slidably connected inside the filter box.

[0011] Preferably, a connecting shaft is rotatably connected to the lower end of the filter box, a first bevel gear is fixedly connected to the lower end of the connecting shaft, a second bevel gear is fixedly connected to the front end of the rotating column, the first bevel gear and the second bevel gear mesh with each other, a third sprocket is fixedly connected to the circumferential surface of the connecting shaft, a fourth sprocket is fixedly connected to the circumferential surface of the reciprocating screw, the third sprocket and the fourth sprocket are connected by a second chain, a driven shaft is rotatably connected to the right end of the filter box via a rotating seat, a fifth sprocket is fixedly connected to the circumferential surface of the driven shaft, the fifth sprocket and the fourth sprocket are connected by a third chain, a third bevel gear is fixedly connected to the upper end of the driven shaft, a fourth bevel gear is fixedly connected to the right end of the driven rod, the third bevel gear and the fourth bevel gear mesh with each other.

[0012] Preferably, a sewage inlet pipe is fixedly connected to the front end of the filter box, a sewage delivery pipe is fixedly connected to the rear end of the filter box, the end of the sewage delivery pipe away from the filter box is fixedly connected to the filter cylinder, a transfer pipe is fixedly connected to the front end of the filter cylinder, the end of the transfer pipe away from the filter cylinder is fixedly connected to the sewage inlet of the heat exchanger, a discharge pipe is fixedly connected to the sewage outlet of the heat exchanger, a clean water inlet pipe is fixedly connected to the clean water inlet of the heat exchanger, and a clean water outlet pipe is fixedly connected to the clean water outlet of the heat exchanger.

[0013] A method for operating a wastewater waste heat recovery heat exchanger includes the following steps:

[0014] 1S: The wastewater is transported to the filter box through the wastewater inlet pipe;

[0015] 2S: Then, the wastewater is filtered once through a filter screen to remove large impurities.

[0016] 3S: The wastewater that has undergone primary filtration in the filter box is then transported to the filter cartridge through the wastewater conveying pipe. The sludge in the wastewater is then subjected to secondary filtration through the filtration device inside the filter cartridge.

[0017] 4S: After the sludge in the sewage is filtered out, the sewage is then transported to the heat exchanger through the transfer pipe;

[0018] 5S: At the same time, clean water is transported to the heat exchanger through the clean water inlet pipe to exchange heat with the sewage;

[0019] 6S: Wastewater after heat exchange is discharged through the wastewater discharge pipe, and clean water after heat exchange is discharged through the clean water discharge pipe;

[0020] 7S: By controlling the motor to start at a timer, impurities inside the filter cartridge and filter box are discharged.

[0021] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0022] 1. This invention transports sewage to a filter box through a sewage inlet pipe, where it undergoes primary filtration through a filter screen. The filtered sewage is then transported to a filter cylinder through a sewage delivery pipe. The filter cylinder then filters out sludge from the sewage through a filtration device. After sludge filtration, the sewage is transported to a heat exchanger through a transfer pipe, while clean water is simultaneously transported to the heat exchanger through a clean water inlet pipe for heat exchange. Finally, the sewage is discharged through a sewage outlet pipe, and the clean water, after heat exchange, is discharged through a clean water outlet pipe.

[0023] 2. This invention uses timed start-up motor operation. The motor drives the first sprocket to rotate, which in turn drives the second sprocket via a first chain. The second sprocket drives the rotating column to rotate, which in turn drives the filter plate to rotate, causing the filter plate to slide against the scraper box. The scraper box then scrapes off impurities adhering to the surface of the filter plate, keeping it unobstructed and thus improving the filtration effect on wastewater. This improves the quality of the water entering the heat exchanger and reduces the likelihood of blockage. After the impurities on the filter plate are removed by the scraper box, the water pump is simultaneously started. The water pump, through a connecting pipe, absorbs the sludge and impurities scraped off by the scraper box into a collection box, and then through the input pipe... Under its action, the sludge and impurities in the collection box are discharged through the output pipe, thereby achieving the effect of cleaning and discharging the sludge and impurities filtered out in the filter cartridge. When the rotating column rotates, the rotating column drives the second bevel gear to rotate, the second bevel gear drives the connecting shaft to rotate through the first bevel gear, the connecting shaft drives the third sprocket to rotate, the third sprocket drives the fourth sprocket to rotate through the second chain, thereby achieving the effect of driving the reciprocating screw to rotate. At the same time, the fourth sprocket drives the fifth sprocket to rotate through the third chain, the fifth sprocket drives the driven shaft to rotate, the driven shaft drives the third bevel gear to rotate, the third bevel gear drives the driven rod to rotate through the fourth bevel gear, thereby achieving the effect of driving the push plate to push the impurities in the filter box. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the rear view in this invention;

[0026] Figure 3 This is a schematic diagram of a partial cross-section on the left side of the present invention;

[0027] Figure 4 This is a schematic diagram of a partial cross-section on the right side of the present invention;

[0028] Figure 5 This is a schematic diagram of the scraper box of the present invention.

[0029] In the diagram: 1. Base; 2. Heat exchanger; 201. Mounting plate; 202. Heat exchange fins; 3. Support plate; 4. Filter cartridge; 5. Rotating column; 6. Filter plate; 7. Fixing rod; 8. Scraper box; 9. Motor; 10. First sprocket; 11. Second sprocket; 12. Water pump; 13. Collection box; 14. Inlet pipe; 15. Connecting pipe; 16. Outlet pipe; 17. Support rod; 18. Filter box; 19. Filter screen; 20. Reciprocating screw; 1. Driven rod; 22. Cleaning plate; 23. Push plate; 24. Collection box; 25. Connecting shaft; 26. First bevel gear; 27. Second bevel gear; 28. Third sprocket; 29. ​​Fourth sprocket; 30. Driven shaft; 31. Fifth sprocket; 32. Third bevel gear; 33. Fourth bevel gear; 34. Sewage inlet pipe; 35. Sewage conveying pipe; 36. Transfer pipe; 37. Discharge pipe; 38. Clean water inlet pipe; 39. Clean water discharge pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-5 This invention provides a technical solution: a wastewater waste heat recovery heat exchange mechanism, including a base 1, a heat exchanger 2 fixedly connected to the upper end of the base 1, the heat exchanger 2 including an mounting plate 201 and heat exchange plates 202, the mounting plate 201 fixedly connected to the upper end of the base 1, heat exchange plates 202 fixedly connected between the mounting plates 201, a support plate 3 fixedly connected to the upper end of the mounting plate 201, a sludge filtration device fixedly connected to the upper end of the support plate 3, the sludge filtration device including a filter cylinder 4 fixedly connected to the upper end of the support plate 3, a rotating column 5 rotatably connected inside the filter cylinder 4, filter plates 6 fixedly connected to the circumference of the rotating column 5, multiple filter plates 6 being provided, and the inner wall of the filter cylinder 4 being fixedly connected to... A fixed rod 7 is attached, and a scraper box 8 is fixedly connected to the end of the fixed plate away from the filter cylinder 4. The scraper box 8 is slidably connected to the filter plate 6. During operation, when sewage enters the filter cylinder 4, the sludge in the sewage is filtered by the filter plate 6 inside the filter cylinder 4. After a long period of filtration, the rotating column 5 rotates, which drives the filter plate 6 to rotate, so that the filter plate 6 slides between the scraper box 8. At this time, the scraper box 8 will scrape off the impurities attached to the surface of the filter plate 6, keeping the filter plate 6 unobstructed. This improves the filtration effect of sewage, enhances the quality of the water entering the heat exchanger 2, and reduces the possibility of blockage in the heat exchanger 2.

[0032] Furthermore, a motor 9 is fixedly connected to the upper end of the support plate 3, a first sprocket 10 is fixedly connected to the output end of the motor 9, and a second sprocket 11 is fixedly connected to the circumferential surface of the rotating column 5. The first sprocket 10 and the second sprocket 11 are connected by a first chain. When working, by starting the motor 9, the motor 9 drives the first sprocket 10 to rotate, the first sprocket 10 drives the second sprocket 11 to rotate through the first chain, and the second sprocket 11 drives the rotating column 5 to rotate, thereby achieving the effect of driving the filter device to operate.

[0033] Furthermore, a water pump 12 and a collection box 13 are fixedly connected to the upper end of the support plate 3. An input pipe 14 is fixedly connected to the input and output ends of the water pump 12. The end of the input pipe 14 away from the water pump 12 is fixedly connected to the collection box 13. A connecting pipe 15 is fixedly connected to the upper end of the collection box 13. The end of the connecting pipe 15 away from the collection box 13 is fixedly connected to the scraper box 8. An output pipe 16 is fixedly connected to the output end of the water pump 12. During operation, when the impurities on the filter plate 6 are scraped off by the scraper box 8, the water pump 12 is started at the same time. The water pump 12 absorbs the sludge and impurities scraped off by the scraper box 8 into the collection box 13 through the connecting pipe 15. Then, under the action of the input pipe 14, the sludge and impurities in the collection box 13 are discharged through the output pipe 16, thereby achieving the effect of cleaning and discharging the sludge and impurities filtered out in the filter cylinder 4.

[0034] Furthermore, a support rod 17 is fixedly connected to the upper end of the support base, and a filter box 18 is fixedly connected to the upper end of the support rod 17. A filter screen 19 is fixedly connected inside the filter box 18. During operation, when sewage enters the filter box 18, the larger impurities in the sewage are filtered by the filter screen 19, thereby achieving the effect of primary filtration of sewage.

[0035] Furthermore, a reciprocating screw 20 and a driven rod 21 are rotatably connected inside the filter box 18. A cleaning plate 22 is threadedly connected to the circumferential surface of the reciprocating screw 20, and the cleaning plate 22 is slidably connected to the filter screen 19. A pusher plate 23 is fixedly connected to the circumferential surface of the driven rod 21, and a collection box 24 is slidably connected inside the filter box 18. During operation, the reciprocating screw 20 rotates, causing the cleaning plate 22 to slide up and down inside the filter box 18. The cleaning plate 22 then lifts the impurities intercepted by the filter screen 19 upwards. At this time, the driven rod 21 rotates, causing the pusher plate 23 to rotate. The pusher plate 23 then pushes the raised impurities into the collection box 24, thereby achieving the effect of cleaning the impurities inside the filter box 18.

[0036] Furthermore, a connecting shaft 25 is rotatably connected to the lower end of the filter box 18, and a first bevel gear 26 is fixedly connected to the lower end of the connecting shaft 25. A second bevel gear 27 is fixedly connected to the front end of the rotating column 5. The first bevel gear 26 and the second bevel gear 27 mesh with each other. A third sprocket 28 is fixedly connected to the circumferential surface of the connecting shaft 25, and a fourth sprocket 29 is fixedly connected to the circumferential surface of the reciprocating screw 20. The third sprocket 28 and the fourth sprocket 29 are connected by a second chain. A driven shaft 30 is rotatably connected to the right end of the filter box 18 via a rotating seat. A fifth sprocket 31 is fixedly connected to the circumferential surface of the driven shaft 30. The fifth sprocket 31 and the fourth sprocket 29 are connected by a third chain. A third bevel gear 32 is fixedly connected to the upper end of the driven shaft 30, and a fourth bevel gear 32 is fixedly connected to the right end of the driven rod 21. Gear 33, third bevel gear 32 and fourth bevel gear 33 mesh together. During operation, when the rotating column 5 rotates, the rotating column 5 drives the second bevel gear 27 to rotate. The second bevel gear 27 drives the connecting shaft 25 to rotate through the first bevel gear 26. The connecting shaft 25 drives the third sprocket 28 to rotate. The third sprocket 28 drives the fourth sprocket 29 to rotate through the second chain, thereby achieving the effect of driving the reciprocating screw 20 to rotate. At the same time, the fourth sprocket 29 drives the fifth sprocket 31 to rotate through the third chain. The fifth sprocket 31 drives the driven shaft 30 to rotate. The driven shaft 30 drives the third bevel gear 32 to rotate. The third bevel gear 32 drives the driven rod 21 to rotate through the fourth bevel gear 33, thereby achieving the effect of driving the pusher plate 23 to push impurities in the filter box 18.

[0037] Furthermore, a sewage inlet pipe 34 is fixedly connected to the front end of the filter box 18, and a sewage delivery pipe 35 is fixedly connected to the rear end of the filter box 18. The end of the sewage delivery pipe 35 away from the filter box 18 is fixedly connected to the filter cylinder 4. A transfer pipe 36 is fixedly connected to the front end of the filter cylinder 4, and the end of the transfer pipe 36 away from the filter cylinder 4 is fixedly connected to the sewage inlet of the heat exchanger 2. A discharge pipe 37 is fixedly connected to the sewage outlet of the heat exchanger 2, a clean water inlet pipe 38 is fixedly connected to the clean water inlet of the heat exchanger 2, and a clean water outlet pipe 39 is fixedly connected to the clean water outlet of the heat exchanger 2. During operation, the sewage... The inlet pipe 34 transports sewage to the filter box 18, where it undergoes primary filtration through the filter screen 19. The sewage that has undergone primary filtration in the filter box 18 is then transported to the filter cylinder 4 through the sewage delivery pipe 35. The sludge in the sewage is then filtered through the filtration device in the filter cylinder 4. After the sludge filtration is completed, the sewage is transported to the heat exchanger 2 through the transfer pipe 36, while clean water is transported to the heat exchanger 2 through the clean water inlet pipe 38 for heat exchange. Finally, the sewage is discharged through the sewage outlet pipe 37, and the clean water after heat exchange is completed is discharged through the clean water outlet pipe 39.

[0038] The working principle of this invention is as follows: In use, sewage is transported to the filter box 18 through the sewage inlet pipe 34, and then filtered once through the filter screen 19. The sewage that has undergone one filtration in the filter box 18 is then transported to the filter cylinder 4 through the sewage delivery pipe 35. The sludge in the sewage is then filtered out by the filtration device in the filter cylinder 4. After the sludge filtration is complete, the sewage is transported to the heat exchanger 2 through the transfer pipe 36, while clean water is simultaneously transported to the heat exchanger 2 through the clean water inlet pipe 38 for heat exchange. Finally, the sewage is discharged through the sewage outlet pipe 37. After heat exchange, the clean water is discharged through the clean water discharge pipe 39. Then, the motor 9 is started by a timer control, which drives the first sprocket 10 to rotate. The first sprocket 10 drives the second sprocket 11 to rotate via the first chain. The second sprocket 11 drives the rotating column 5 to rotate. The rotation of the rotating column 5 drives the filter plate 6 to rotate, causing the filter plate 6 to slide between itself and the scraper box 8. At this time, the scraper box 8 scrapes off the impurities attached to the surface of the filter plate 6, keeping the filter plate 6 unobstructed. This improves the filtration effect of the wastewater and enhances the wastewater treatment efficiency. The quality of water entering heat exchanger 2 is improved to reduce the likelihood of blockage. After impurities on filter plate 6 are scraped off by scraper box 8, water pump 12 is simultaneously activated. Water pump 12, through connecting pipe 15, absorbs the sludge and impurities scraped off by scraper box 8 into collection box 13. Then, under the action of inlet pipe 14, the sludge and impurities in collection box 13 are discharged through outlet pipe 16, thus achieving the effect of cleaning and discharging the sludge and impurities filtered out in filter cylinder 4. When rotating column 5 rotates, it drives the second bevel gear 27 to rotate. The second bevel gear 27... The first bevel gear 26 drives the connecting shaft 25 to rotate, the connecting shaft 25 drives the third sprocket 28 to rotate, the third sprocket 28 drives the fourth sprocket 29 to rotate via the second chain, thereby achieving the effect of driving the reciprocating screw 20 to rotate. At the same time, the fourth sprocket 29 drives the fifth sprocket 31 to rotate via the third chain, the fifth sprocket 31 drives the driven shaft 30 to rotate, the driven shaft 30 drives the third bevel gear 32 to rotate, the third bevel gear 32 drives the driven rod 21 to rotate via the fourth bevel gear 33, thereby achieving the effect of driving the pusher plate 23 to push impurities in the filter box 18.

[0039] A method for operating a wastewater waste heat recovery heat exchanger includes the following steps:

[0040] S1: Sewage is transported to the filter box 18 through the sewage inlet pipe 34;

[0041] S2: Then, the wastewater is filtered through filter screen 19 to remove large impurities in the wastewater.

[0042] S3: The sewage that has undergone one filtration in the filter box 18 is then transported to the filter cylinder 4 through the sewage conveying pipe 35, and the sludge in the sewage is then filtered in a secondary manner through the filtration device in the filter cylinder 4.

[0043] S4: After the sludge in the sewage is filtered out, the sewage is then transported to the heat exchanger 2 through the transfer pipe 36;

[0044] S5: At the same time, clean water is transported to the heat exchanger 2 through the clean water inlet pipe 38 to exchange heat with the sewage;

[0045] S6: Wastewater after heat exchange is discharged through wastewater discharge pipe 37, and clean water after heat exchange is discharged through clean water discharge pipe 39;

[0046] S7: The motor 9 is started by a timer to discharge impurities from the filter cartridge 4 and the filter box 18.

[0047] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A wastewater waste heat recovery heat exchange mechanism, comprising a base (1), characterized in that: A heat exchanger (2) is fixedly connected to the upper end of the base (1). The heat exchanger (2) includes an mounting plate (201) and heat exchange plates (202). The mounting plate (201) is fixedly connected to the upper end of the base (1). Heat exchange plates (202) are fixedly connected between the mounting plates (201). A support plate (3) is fixedly connected to the upper end of the mounting plate (201). A sludge filtration device is fixedly connected to the upper end of the support plate (3). The sludge filtration device includes a filter cylinder (4) fixedly connected to the upper end of the support plate (3). A rotating column (5) is rotatably connected inside the filter cylinder (4). A rotating column (5) is fixedly connected to the circumferential surface of the rotating column (5). A filter plate (6) is provided, and multiple filter plates (6) are provided. A fixing rod (7) is fixedly connected to the inner wall of the filter cylinder (4). A scraper box (8) is fixedly connected to the end of the fixing rod (7) away from the filter cylinder (4). The scraper box (8) is slidably connected to the filter plate (6). A support rod (17) is fixedly connected to the upper end of the support plate (3). A filter box (18) is fixedly connected to the upper end of the support rod (17). A filter screen (19) is fixedly connected inside the filter box (18). A reciprocating screw (20) and a driven rod (21) are rotatably connected inside the filter box (18). The circumferential surface of the reciprocating screw (20) is threaded with a screw thread. A cleaning plate (22) is slidably connected to a filter screen (19). A pusher plate (23) is fixedly connected to the circumferential surface of the driven rod (21). A collection box (24) is slidably connected inside the filter box (18). A connecting shaft (25) is rotatably connected to the lower end of the filter box (18). A first bevel gear (26) is fixedly connected to the lower end of the connecting shaft (25). A second bevel gear (27) is fixedly connected to the front end of the rotating column (5). The first bevel gear (26) and the second bevel gear (27) mesh with each other. A third sprocket (28) is fixedly connected to the circumferential surface of the connecting shaft (25). The reciprocating screw... (20) A fourth sprocket (29) is fixedly connected to the circumferential surface. The third sprocket (28) and the fourth sprocket (29) are connected by a second chain. The right end of the filter box (18) is rotatably connected to a driven shaft (30) via a rotating seat. The circumferential surface of the driven shaft (30) is fixedly connected to a fifth sprocket (31). The fifth sprocket (31) and the fourth sprocket (29) are connected by a third chain. The upper end of the driven shaft (30) is fixedly connected to a third bevel gear (32). The right end of the driven rod (21) is fixedly connected to a fourth bevel gear (33). The third bevel gear (32) and the fourth bevel gear (33) mesh with each other.A sewage inlet pipe (34) is fixedly connected to the front end of the filter box (18), and a sewage delivery pipe (35) is fixedly connected to the rear end of the filter box (18). The end of the sewage delivery pipe (35) away from the filter box (18) is fixedly connected to the filter cylinder (4). A transfer pipe (36) is fixedly connected to the front end of the filter cylinder (4), and the end of the transfer pipe (36) away from the filter cylinder (4) is fixedly connected to the sewage inlet of the heat exchanger (2).

2. The wastewater waste heat recovery heat exchange mechanism according to claim 1, characterized in that: The upper end of the support plate (3) is fixedly connected to a motor (9), the output end of the motor (9) is fixedly connected to a first sprocket (10), the circumferential surface of the rotating column (5) is fixedly connected to a second sprocket (11), and the first sprocket (10) and the second sprocket (11) are connected by a first chain.

3. The wastewater waste heat recovery heat exchange mechanism according to claim 2, characterized in that: A water pump (12) and a collection box (13) are fixedly connected to the upper end of the support plate (3). An input pipe (14) is fixedly connected to the input and output ends of the water pump (12). The end of the input pipe (14) away from the water pump (12) is fixedly connected to the collection box (13). A connecting pipe (15) is fixedly connected to the upper end of the collection box (13). The end of the connecting pipe (15) away from the collection box (13) is fixedly connected to the scraper box (8). An output pipe (16) is fixedly connected to the output end of the water pump (12).

4. The wastewater waste heat recovery heat exchange mechanism according to claim 1, characterized in that: The heat exchanger (2) has a wastewater discharge port fixedly connected to a discharge pipe (37), a clean water inlet port fixedly connected to a clean water inlet pipe (38), and a clean water discharge port fixedly connected to a clean water discharge pipe (39).

5. A method for operating a wastewater waste heat recovery heat exchange mechanism, applicable to any one of the wastewater waste heat recovery heat exchange mechanisms described in claims 1-4, characterized in that, Includes the following steps: S1: The sewage is transported to the filter box (18) through the sewage inlet pipe (34); S2: Then, the wastewater is filtered once through the filter screen (19) to remove large impurities. S3: The sewage that has undergone one filtration in the filter box (18) is then transported to the filter cylinder (4) through the sewage conveying pipe (35), and the sludge in the sewage is then filtered in a secondary manner through the filter device in the filter cylinder (4). S4: After the sludge in the sewage is filtered out, the sewage is then transported to the heat exchanger (2) through the transfer pipe (36); S5: At the same time, clean water is transported to the heat exchanger (2) through the clean water inlet pipe (38) to exchange heat with the sewage; S6: The wastewater after heat exchange is discharged through the wastewater discharge pipe (37), and the clean water after heat exchange is discharged through the clean water discharge pipe (39); S7: The motor (9) is started by timing control to discharge impurities from the filter cartridge (4) and filter box (18).

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