Flue gas water supply heat exchanger

Abstract

The utility model discloses a flue gas feed water heat exchanger relates to heat exchanger field, including heat exchange chamber main part, inlet smoke mechanism, clearance mechanism and dust fall mechanism, heat exchange chamber main part upper end is equipped with the inlet smoke mechanism, heat exchange chamber main part one end is equipped with the clearance mechanism. Through the arrangement of the heat exchange bin body and the cleaning mechanism, smoke enters the heat exchange bin body through the telescopic pipe to make contact with the heat exchange pipe for heat exchange, a large amount of soot can be accumulated on the surface of the heat exchange pipe after long-time heat exchange work, and a motor is started to drive a tooth belt on a bearing gear shaft to rotate; the sleeve scraping plate connected with the lower end of the toothed belt moves towards the right end in the sliding way, so that soot on the heat exchange pipe is scraped to one end of the heat exchange bin body, the sealing plate moves in the clamping groove to open the opening in the lower end of the heat exchange bin body, the soot is discharged, and the cleaning efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, in particular to a flue gas water supply heat exchanger. Background Art

[0002] When a pulverized coal boiler is working, the combustion of pulverized coal in the boiler will produce a large amount of flue gas. When the load increases, the amount of flue gas generated in the boiler increases, and when the load decreases, the amount of flue gas generated in the boiler decreases. In order to recover the heat in the flue gas and reduce the waste of heat energy, the flue gas is usually passed into a flue gas heat exchanger for heat recovery. The flue gas heat exchanger is a heat exchange device that uses the heat of a high-temperature fluid to heat a low-temperature fluid. A heat exchange plate is arranged in the flue gas heat exchanger, and circulating water flows in the heat exchange plate. After the flue gas contacts the heat exchange plate, it can exchange heat with the circulating water in the heat exchange plate. The temperature of the circulating water rises and the temperature of the flue gas decreases, thereby recovering the heat in the flue gas and reducing the waste of heat energy. However, generally, the flue gas will carry ash when it is discharged from the boiler. After the flue gas with ash is passed into the flue gas heat exchanger, when the flue gas exchanges heat with the heat exchange plate, the ash in the flue gas is easy to adhere to the heat exchange plate. After the ash adheres to the surface of the heat exchange plate, it will affect the heat exchange efficiency of the heat exchange plate. Therefore, a flue gas water heat exchanger is needed.

[0003] A flue gas heat exchanger is provided in a patent document with an existing technical disclosure number of CN220366729U, which includes a shell and a plurality of heat exchange plates, each of which is located in the shell, and each of the heat exchange plates is evenly spaced to form a plurality of heat exchange channels, each of which is provided with a plurality of rotating plates, and the width direction of each rotating plate forms an angle with the length direction of the heat exchange channel, one end of the rotating plate along the width direction is hinged to the side wall of the heat exchange plate, and the other end of the rotating plate along the width direction faces the smoke inlet, and the end of the rotating plate away from the hinged end of the rotating plate is connected to a long strip through a connecting rod, one end of the connecting rod is connected to the long strip, and the other end of the connecting rod is connected to the rotating plate, and when the rotating plate rotates and resets, the long strip hits the side wall of the heat exchange plate. The present application has the following effects: it can reduce the ash on the surface of the heat exchange plate and improve the heat exchange efficiency of the heat exchange plate. However, when the CN220366729U technology is in operation, it cannot effectively improve the cleaning efficiency of the device, nor can it effectively improve the dust reduction effect of the device, and it cannot improve the adaptability of the installation position of the device. Therefore, a flue gas water heat exchanger is urgently needed. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a flue gas to water heat exchanger to solve the problem that the existing heat exchanger cannot effectively improve the cleaning efficiency of the device when in use, cannot effectively improve the dust reduction effect of the device, and cannot improve the adaptability of the installation position of the device.

[0005] To achieve the above objectives, the utility model provides the following technical solutions: a flue gas to water heat exchanger, comprising a heat exchange bin body, a smoke inlet mechanism, a cleaning mechanism and a dust reduction mechanism, wherein a smoke inlet mechanism is installed at the upper end of the heat exchange bin body.

[0006] A cleaning mechanism is installed at one end of the heat exchange bin body, and the cleaning mechanism includes a slide, an extrusion pad, a sleeve scraper, a toothed belt, a bearing gear shaft, a motor, a heat exchange tube, a slot and a sealing plate. A slide is opened at one end of the heat exchange bin body, a squeeze pad is installed at one end of the slide, a sleeve scraper is installed at the middle end of the extrusion pad, a toothed belt is installed at one end of the sleeve scraper, a bearing gear shaft is installed at one end of the toothed belt, a motor is installed at one end of the bearing gear shaft, a heat exchange tube is installed at the middle end of the sleeve scraper, a slot is opened at the lower end of the heat exchange bin body, and a sealing plate is installed at one end of the slot.

[0007] A dust reduction mechanism is installed at one end of the heat exchange tube.

[0008] Preferably, the smoke inlet mechanism includes a smoke inlet, a fixed tube, a telescopic tube and an anti-overflow pad. The smoke inlet is installed at the upper end of the heat exchange bin main body, the solid tube is installed at the upper end of the smoke inlet, the telescopic tube is installed at one end of the solid tube, and the anti-overflow pad is installed at one end of the telescopic tube.

[0009] Preferably, the upper end surface of the anti-overflow pad and the lower end surface of the telescopic tube are adhered to each other, and the telescopic tube is threadedly connected to the smoke inlet through a fixed tube tube.

[0010] Preferably, the casing scraper forms a sliding structure with the heat exchange tube through a slideway, and the toothed belt is meshed with the bearing gear shaft.

[0011] Preferably, the sealing plate forms a sliding structure with the heat exchange chamber body through a slot, and the toothed belt forms a rotating structure with the heat exchange chamber body through a bearing gear shaft.

[0012] Preferably, the dust reduction mechanism includes an arched tube, a dust reduction box, an upper support cover, a booster pump, a water distribution pipe and an atomizing head. The heat exchange tube is installed with an arched tube at one end, the dust reduction box is installed at one end of the arched tube, the upper support cover is installed at the upper end of the dust reduction box, the booster pump is installed at the upper end of the upper support cover, the water distribution pipe is installed at one end of the booster pump, and the atomizing head is installed at the lower end of the water distribution pipe.

[0013] Preferably, the atomizing head is threadedly connected to the water distribution pipe, and the arched pipe is flange-connected to the dust suppression box.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model provides a heat exchange bin body and a cleaning mechanism. The smoke enters the heat exchange bin body through the telescopic tube and contacts the heat exchange tube for heat exchange. After a long period of heat exchange, a large amount of smoke ash will accumulate on the surface of the heat exchange tube. The motor is started to drive the toothed belt on the bearing gear shaft to rotate, so that the sleeve scraper connected to the lower end of the toothed belt moves to the right end in the slideway, so as to scrape the smoke ash on the heat exchange tube to one end of the heat exchange bin body, and move the sealing plate in the slot to open the opening at the lower end of the heat exchange bin body to discharge the smoke ash, thereby improving the cleaning efficiency of the device;

[0016] 2. The utility model is provided with a heat exchange bin body and a dust reduction mechanism. The cooled flue gas enters the dust reduction box through the arch pipe. At this time, the booster pump is started to spray through the atomizing head at the lower end of the water distribution pipe to precipitate the particulate matter in the flue gas, thereby improving the dust reduction effect of the device;

[0017] 3. The utility model connects the telescopic tube with the smoke exhaust outlet and the heat exchange bin body through the heat exchange bin body and the smoke inlet mechanism. Anti-overflow pads are provided at both ends of the telescopic tube to prevent smoke from overflowing, and the telescopic tube lifting device has adaptability in the installation position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front cross-sectional view of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the smoke inlet mechanism of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the cleaning mechanism of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the dust reduction mechanism of the utility model.

[0022] In the figure: 1. heat exchange bin body; 2. smoke inlet mechanism; 201. smoke inlet port; 202. fixed tube; 203. telescopic tube; 204. anti-overflow pad; 3. cleaning mechanism; 301. slideway; 302. extrusion pad; 303. sleeve scraper; 304. toothed belt; 305. bearing gear shaft; 306. motor; 307. heat exchange tube; 308. slot; 309. sealing plate; 4. dust suppression mechanism; 401. arched tube; 402. dust suppression box; 403. upper support cover; 404. booster pump; 405. water distribution pipe; 406. atomizing head. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] See also Figure 1-4 A flue gas water heat exchanger comprises a heat exchange bin body 1, a smoke inlet mechanism 2, a cleaning mechanism 3 and a dust reduction mechanism 4. The smoke inlet mechanism 2 is installed at the upper end of the heat exchange bin body 1. The smoke inlet mechanism 2 comprises a smoke inlet 201, a solid tube 202, a telescopic tube 203 and an anti-overflow pad 204. The smoke inlet 201 is installed at the upper end of the heat exchange bin body 1. The solid tube 202 is installed at the upper end of the smoke inlet 201. The telescopic tube 203 is installed at one end of the solid tube 202. The telescopic tube 203 is installed at one end of the telescopic tube 204. 03 is installed with an anti-overflow pad 204 at one end, the upper end surface of the anti-overflow pad 204 is adhered to the lower end surface of the telescopic tube 203, and the telescopic tube 203 is threadedly connected with the smoke inlet 201 through the fixed tube tube 202, and the telescopic tube 203 is connected to the smoke exhaust outlet and the heat exchange bin body 1 through the fixed tube tube 202. Anti-overflow pads 204 are arranged at both ends of the telescopic tube 203 to prevent smoke from overflowing, and the telescopic tube 203 improves the adaptability of the installation position of the device.

[0026] See also Figure 1-4 A flue gas water heat exchanger, a heat exchange bin body 1 is provided with a cleaning mechanism 3 at one end, the cleaning mechanism 3 comprises a slide 301, a squeeze pad 302, a sleeve scraper 303, a toothed belt 304, a bearing gear shaft 305, a motor 306, a heat exchange tube 307, a slot 308 and a sealing plate 309, a slide 301 is provided at one end of the heat exchange bin body 1, a squeeze pad 302 is provided at one end of the slide 301, and the squeeze pad 302 A sleeve scraper 303 is installed at the middle end, a toothed belt 304 is installed at one end of the sleeve scraper 303, a rotating gear shaft 305 is installed at one end of the toothed belt 304, a motor 306 is installed at one end of the rotating gear shaft 305, a heat exchange tube 307 is installed at the middle end of the sleeve scraper 303, a slot 308 is opened at the lower end of the heat exchange bin body 1, a sealing plate 309 is installed at one end of the slot 308, and the sleeve scraper 303 is connected to the heat exchanger through the slideway 301. The tube 307 forms a sliding structure, the toothed belt 304 and the rotating gear shaft 305 are meshed with each other, the sealing plate 309 forms a sliding structure with the heat exchange bin body 1 through the slot 308, and the toothed belt 304 forms a rotating structure with the heat exchange bin body 1 through the rotating gear shaft 305. The flue gas enters the heat exchange bin body 1 through the telescopic tube 203 and contacts the heat exchange tube 307 for heat exchange. After a long period of heat exchange, a large amount of soot will accumulate on the surface of the heat exchange tube 307. The starting motor 306 drives the toothed belt 304 on the rotating gear shaft 305 to rotate, so that the sleeve scraper 303 connected to the lower end of the toothed belt 304 moves to the right end in the slideway 301, thereby scraping the soot on the heat exchange tube 307 to one end of the heat exchange bin body 1, and the sealing plate 309 is moved in the slot 308 to open the opening at the lower end of the heat exchange bin body 1 to discharge the soot, thereby improving the cleaning efficiency of the device.

[0027] See also Figure 1-4A flue gas water supply heat exchanger, a dust reduction mechanism 4 is installed at one end of the heat exchange tube 307, the dust reduction mechanism 4 includes an arched tube 401, a dust reduction box 402, an upper support cover 403, a booster pump 404, a water distribution pipe 405 and an atomizing head 406, an arched tube 401 is installed at one end of the heat exchange tube 307, a dust reduction box 402 is installed at one end of the arched tube 401, an upper support cover 403 is installed on the upper end of the dust reduction box 402, and a booster pump 404 is installed on the upper end of the upper support cover 403, A water distribution pipe 405 is installed at one end of the booster pump 404, and an atomizer head 406 is installed at the lower end of the water distribution pipe 405. The atomizer head 406 is threadedly connected to the water distribution pipe 405, and the arch pipe 401 is flange-connected to the dust reduction box 402. The cooled flue gas enters the dust reduction box 402 through the arch pipe 401. At this time, the booster pump 404 is started to spray through the atomizer head 406 at the lower end of the water distribution pipe 405 to precipitate the particulate matter in the flue gas, thereby improving the dust reduction effect of the device.

[0028] Working principle: When in use, the telescopic tube 203 is preferably connected to the smoke exhaust outlet and the heat exchange bin body 1 through the fixed tube tube 202. Anti-overflow pads 204 are provided at both ends of the telescopic tube 203 to prevent smoke from overflowing, and the adaptability of the installation position of the telescopic tube 203 lifting device. The smoke enters the heat exchange bin body 1 through the telescopic tube 203 and contacts the heat exchange tube 307 for heat exchange. After a long period of heat exchange work, a large amount of smoke ash will accumulate on the surface of the heat exchange tube 307. The starting motor 306 drives the toothed belt 304 on the bearing gear shaft 305 to rotate, so that the sleeve scraper 303 connected to the lower end of the toothed belt 304 moves to the right end in the slideway 301, so as to scrape the smoke ash on the heat exchange tube 307 to one end of the heat exchange bin body 1, and the sealing plate 309 is closed in the card slot 3 08 moves inside to open the opening at the lower end of the heat exchange bin body 1 to discharge the ash and improve the cleaning efficiency of the device. The squeezing pad 302 quickly recovers after the sleeve scraper 303 passes through to prevent smoke overflow, and the sleeve scraper 303 in the non-working state is normally placed at the leftmost end of the heat exchange bin body 1, which does not affect the heat exchange of the smoke. The cooled smoke enters the dust reduction box 402 through the arch pipe 401. At this time, the boost pump 404 is started to spray through the atomizing head 406 at the lower end of the water distribution pipe 405 to precipitate the particulate matter in the smoke and improve the dust reduction effect of the device. The arch pipe 401 prevents water vapor from flowing back, thus completing the use of the device. The content not described in detail in this manual belongs to the prior art known to professional and technical personnel in this field.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas water heat exchanger, comprising a heat exchange chamber body (1), a smoke inlet mechanism (2), a cleaning mechanism (3) and a dust reduction mechanism (4), characterized in that: A smoke inlet mechanism (2) is installed at the upper end of the heat exchange bin body (1); A cleaning mechanism (3) is installed at one end of the heat exchange bin body (1), and the cleaning mechanism (3) comprises a slideway (301), a squeezing pad (302), a sleeve scraper (303), a toothed belt (304), a bearing gear shaft (305), a motor (306), a heat exchange tube (307), a slot (308) and a sealing plate (309). A slideway (301) is opened at one end of the heat exchange bin body (1), and a squeezing pad (302) is installed at one end of the slideway (301). A sleeve scraper (303) is installed at the middle end of the pad (302), a toothed belt (304) is installed at one end of the sleeve scraper (303), a bearing gear shaft (305) is installed at one end of the toothed belt (304), a motor (306) is installed at one end of the bearing gear shaft (305), a heat exchange tube (307) is installed at the middle end of the sleeve scraper (303), a slot (308) is opened at the lower end of the heat exchange bin body (1), and a sealing plate (309) is installed at one end of the slot (308); A dust reduction mechanism (4) is installed at one end of the heat exchange tube (307).

2. A flue gas water heat exchanger according to claim 1, characterized in that: The smoke inlet mechanism (2) comprises a smoke inlet (201), a fixed tube (202), a telescopic tube (203) and an anti-overflow pad (204); the smoke inlet (201) is installed at the upper end of the heat exchange bin body (1); the fixed tube (202) is installed at the upper end of the smoke inlet (201); the telescopic tube (203) is installed at one end of the fixed tube (202); and the anti-overflow pad (204) is installed at one end of the telescopic tube (203).

3. A flue gas water heat exchanger according to claim 2, characterized in that: The upper end surface of the anti-overflow pad (204) and the lower end surface of the telescopic tube (203) are adhered to each other, and the telescopic tube (203) is threadedly connected to the smoke inlet (201) through the tube fixing tube (202).

4. The flue gas water heat exchanger according to claim 1, characterized in that: The casing scraper (303) forms a sliding structure with the heat exchange tube (307) through the slideway (301), and the toothed belt (304) and the bearing gear shaft (305) are meshed with each other.

5. The flue gas water heat exchanger according to claim 1, characterized in that: The sealing plate (309) forms a sliding structure with the heat exchange chamber body (1) via the slot (308), and the toothed belt (304) forms a rotating structure with the heat exchange chamber body (1) via the rotating gear shaft (305).

6. The flue gas water heat exchanger according to claim 1, characterized in that: The dust reduction mechanism (4) comprises an arched tube (401), a dust reduction box (402), an upper support cover (403), a booster pump (404), a water distribution pipe (405) and an atomizing head (406); the arched tube (401) is installed at one end of the heat exchange tube (307); the dust reduction box (402) is installed at one end of the arched tube (401); the upper end of the dust reduction box (402) is installed at the upper end of the upper support cover (403); the booster pump (404) is installed at the upper end of the upper support cover (403); the water distribution pipe (405) is installed at one end of the booster pump (404); and the atomizing head (406) is installed at the lower end of the water distribution pipe (405).

7. A flue gas water heat exchanger according to claim 6, characterized in that: The atomizing head (406) is threadedly connected to the water distribution pipe (405), and the arched pipe (401) is flange-connected to the dust suppression box (402).

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