Waste gas treatment equipment with flue gas recovery function

Abstract

The utility model discloses waste gas treatment equipment with a flue gas recovery function, which belongs to the technical field of waste gas treatment and comprises a base, a filter box is arranged on the top surface of the base, a filter screen is fixedly sleeved in an inner cavity of the filter box, a dust falling mechanism is arranged on the filter box, an exhaust pipe is fixedly sleeved on the top of the filter box, and a dust removal mechanism is arranged on the exhaust pipe. And a heat exchange box is arranged on the top surface of the base. According to the utility model, heat of flowing flue gas in the spiral heat exchange copper pipe and cold water in the heat exchange box are used for heat exchange, so that the heat in the flue gas is recovered, the temperature sensor is used for continuously detecting the water temperature in the heat exchange box, and when the water temperature reaches a preset temperature, the electric control valve is opened to discharge hot water for use; and external water is pumped into the heat exchange box through the first water pump and the water suction pipe, and the function of automatically replacing the water in the heat exchange box is achieved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and more specifically, to a waste gas treatment device with flue gas recovery function. Background Technology

[0002] Boilers produce exhaust gases when burning fuel. These gases are directly released into the air, polluting the atmosphere and affecting human living conditions. Therefore, it is necessary to treat the exhaust gases produced by boiler combustion to protect the atmospheric environment.

[0003] A search revealed that utility model patent CN217795307U discloses a boiler exhaust gas treatment device with exhaust gas heat recovery function. The device includes a base, a main body, a heat exchange box, and a water tank. The main body is positioned above the base, the heat exchange box is located on the left side of the main body, and a water outlet pipe is located at the bottom of the heat exchange box. The water tank is located on the right side of the main body, a water guide pipe is located above the water tank, and a nozzle is located on the left side of the water guide pipe. A first filter plate is installed inside the main body, and a second filter plate is located above the first filter plate. This patent utilizes the heat exchange box to fill it with a suitable amount of cold water. When exhaust gas is introduced through the inlet pipe into the connecting pipe, it exchanges heat with the cold water inside the heat exchange box. The heat from the exhaust gas is used to heat the water, and the hot water can then be extracted through the outlet pipe for reuse, thus achieving full heat recovery.

[0004] However, the aforementioned patents have the following shortcomings: cold water needs to be manually added to the heat exchange box, and it is inconvenient to automatically release the heated water, resulting in poor practicality; furthermore, it is inconvenient to clean the particulate matter filtered off the filter plate, affecting the filtration effect on subsequent flue gas. Therefore, we propose a waste gas treatment device with flue gas recovery function. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a waste gas treatment device with flue gas recovery function.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A waste gas treatment device with flue gas recovery function includes a base, a filter box disposed on the top surface of the base, a filter screen fixedly fitted inside the filter box, a dust suppression mechanism disposed on the filter box, an exhaust pipe fixedly fitted on the top of the filter box, a heat exchange box disposed on the top surface of the base, a first water pump fixedly installed on the top surface of the heat exchange box, a suction pipe fixedly connected to the input end of the first water pump, an output end of the first water pump extending into the inner cavity of the heat exchange box, and an electrically controlled valve fixedly installed at the bottom of the base, the end of the electrically controlled valve extending to... The heat exchange box has an inner cavity, an air inlet pipe fixedly sleeved on the side, an end of the air inlet pipe extending into the inner cavity of the heat exchange box and fixedly connected to a spiral heat exchange copper tube, a top end of the spiral heat exchange copper tube extending into the top of the heat exchange box and fixedly connected to a guide pipe, an end of the guide pipe extending into the inner cavity of the filter box, an upper liquid level sensor fixedly installed on the upper part of the inner cavity of the heat exchange box, a lower liquid level sensor fixedly installed on the lower part of the inner cavity of the heat exchange box, a temperature sensor fixedly installed on the inner wall of the heat exchange box, and a scraping mechanism provided on the filter box.

[0008] As a preferred embodiment of this utility model, the scraping mechanism includes a movable box fixedly sleeved on the back of the filter box and a slide rod fixedly sleeved in the inner cavity of the filter box. A reciprocating screw is rotatably connected to the inner cavity of the movable box. A servo motor is fixedly installed at the end of the movable box. The output shaft of the servo motor is connected to the end of the reciprocating screw. A movable seat is threaded onto the outer side of the reciprocating screw. The movable seat and the slide rod are movably sleeved. A slot seat is provided on the top surface of the movable seat. A locking block is sleeved on the slot seat. A collection box is fixedly connected to the top surface of the locking block. A scraper is fixedly connected to the top of the inner cavity of the collection box. The top surface of the scraper is in contact with the bottom surface of the filter screen.

[0009] As a preferred embodiment of this utility model, the dust suppression mechanism includes a second water pump fixedly installed on the side of the filter box and a water receiving tank fixedly sleeved at the bottom of the inner cavity of the filter box. The input end of the second water pump extends into the inner cavity of the water receiving tank, and the output end of the second water pump is fixedly connected to a first water guide steel pipe. A filter box is fixedly sleeved at the top end of the first water guide steel pipe, and a second water guide steel pipe is fixedly sleeved at the top end of the filter box. The end of the second water guide steel pipe extends into the inner cavity of the filter box and is fixedly connected to a water distribution pipe. Multiple nozzles are fixedly installed on the bottom surface of the water distribution pipe, and filter cotton is sleeved in the inner cavity of the filter box.

[0010] As a preferred embodiment of this utility model, the inner cavity of the filter box is provided with a mounting bracket, and an activated carbon plate is sleeved on the inner side of the mounting bracket.

[0011] As a preferred embodiment of this utility model, the filter box has a door hinged to its front, and a control panel is fixedly installed on the front of the door.

[0012] As a preferred embodiment of this utility model, the filter box is hinged to a sealing door on the front.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, the heat of the flue gas flowing in the spiral heat exchange copper tube and the cold water in the heat exchange box are used for heat exchange, thereby recovering the heat in the flue gas. The temperature sensor is used to continuously detect the water temperature in the heat exchange box. When the water temperature reaches the predetermined temperature, the electric control valve is opened to discharge the hot water for use. The first water pump and the suction pipe are used to pump the external water into the heat exchange box, thereby realizing the function of automatically replacing the water in the heat exchange box.

[0015] (2) In this utility model, the dust in the flue gas is filtered for the first time by the dust-reducing mechanism, and the dust in the flue gas is filtered for the second time by the filter screen. The dust in the spray water is cleaned by the filter cotton in the filter box. The moving seat, the collection box and the scraper are moved laterally back and forth by the threaded engagement between the reciprocating screw and the moving seat. The scraper scrapes the dust filtered down from the bottom surface of the filter screen to remove the dust. The dust is collected by the collection box to ensure the dust removal effect of the dust-reducing mechanism and the filter screen. It is practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the front of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the back of this utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is a cross-sectional schematic diagram of the heat exchange box of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the collection box of this utility model;

[0021] Figure 6 This is a cross-sectional schematic diagram of the filter box of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Base; 2. Filter box; 3. Filter screen; 4. Scraping mechanism; 5. Dust suppression mechanism; 6. Heat exchange box; 7. First water pump; 8. Suction pipe; 9. Electrically controlled valve; 10. Air inlet pipe; 11. Spiral heat exchange copper tube; 12. Air guide pipe; 13. Upper liquid level sensor; 14. Lower liquid level sensor; 15. Temperature sensor; 16. Moving box; 17. Slide rod; 18. Reciprocating lead screw; 19. Servo motor; 20. Movable base; 21. Card slot; 22. Card block; 23. Collection box; 24. Scraper; 25. Water receiving tank; 26. Second water pump; 27. First water guide steel pipe; 28. Filter box; 29. ​​Second water guide steel pipe; 30. Water distribution pipe; 31. Sprayer head; 32. Sealing door; 33. Filter cotton; 34. Activated carbon plate; 35. Mounting bracket; 36. Exhaust pipe; 37. Box door; 38. Control panel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example:

[0028] Please see Figure 1-6A waste gas treatment device with flue gas recovery function includes a base 1, a filter box 2 disposed on the top surface of the base 1, a filter screen 3 fixedly sleeved inside the filter box 2, a dust suppression mechanism 5 disposed on the filter box 2, an exhaust pipe 36 fixedly sleeved on the top of the filter box 2, a heat exchange box 6 disposed on the top surface of the base 1, a first water pump 7 fixedly installed on the top surface of the heat exchange box 6, a suction pipe 8 fixedly connected to the input end of the first water pump 7, and the output end of the first water pump 7 extending into the inner cavity of the heat exchange box 6. An electric control valve 9 is fixedly installed at the bottom of the base 1, and the end of the electric control valve 9 extends into the heat exchange box 6. The heat exchange box 6 has an air inlet pipe 10 fixedly sleeved on its side. The end of the air inlet pipe 10 extends into the inner cavity of the heat exchange box 6 and is fixedly connected to a spiral heat exchange copper tube 11. The top of the spiral heat exchange copper tube 11 extends into the top of the heat exchange box 6 and is fixedly connected to a guide pipe 12. The end of the guide pipe 12 extends into the inner cavity of the filter box 2. An upper liquid level sensor 13 is fixedly installed in the upper part of the inner cavity of the heat exchange box 6. A lower liquid level sensor 14 is fixedly installed in the lower part of the inner cavity of the heat exchange box 6. A temperature sensor 15 is fixedly installed on the inner wall of the heat exchange box 6. A scraping mechanism 4 is provided on the filter box 2.

[0029] In this embodiment, the end of the water suction pipe 8 is connected to an external water supply tank, thereby drawing water from the water supply tank to the heat exchange box 6 for heat recovery. In addition, a collection tank for collecting hot water can be placed below the electric control valve 9 to collect the heated water.

[0030] For details, please refer to Figures 1 to 5 The scraping mechanism 4 includes a movable box 16 fixedly sleeved on the back of the filter box 2 and a slide rod 17 fixedly sleeved in the inner cavity of the filter box 2. A reciprocating screw 18 is rotatably connected to the inner cavity of the movable box 16. A servo motor 19 is fixedly installed at the end of the movable box 16. The output shaft of the servo motor 19 is connected to the end of the reciprocating screw 18. A movable seat 20 is threaded on the outer side of the reciprocating screw 18. The movable seat 20 and the slide rod 17 are movably sleeved. A slot seat 21 is provided on the top surface of the movable seat 20. A locking block 22 is sleeved on the slot seat 21. A collection box 23 is fixedly connected to the top surface of the locking block 22. A scraper 24 is fixedly connected to the top of the inner cavity of the collection box 23. The top surface of the scraper 24 is in contact with the bottom surface of the filter screen 3.

[0031] In this embodiment, the movable seat 20 is limited by the movable engagement between the slide rod 17 and the movable seat 20, so that the movable seat 20 can only move along the axial direction of the reciprocating screw 18.

[0032] For details, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 6The dust suppression mechanism 5 includes a second water pump 26 fixedly installed on the side of the filter box 2 and a water receiving tank 25 fixedly sleeved at the bottom of the inner cavity of the filter box 2. The input end of the second water pump 26 extends into the inner cavity of the water receiving tank 25. The output end of the second water pump 26 is fixedly connected to a first water guide steel pipe 27. The top end of the first water guide steel pipe 27 is fixedly sleeved with a filter box 28. The top end of the filter box 28 is fixedly sleeved with a second water guide steel pipe 29. The end of the second water guide steel pipe 29 extends into the inner cavity of the filter box 2 and is fixedly connected to a water distribution pipe 30. Multiple nozzles 31 are fixedly installed on the bottom surface of the water distribution pipe 30. The inner cavity of the filter box 28 is fitted with filter cotton 33.

[0033] For details, please refer to Figure 3 The inner cavity of the filter box 2 is provided with a mounting bracket 35, and an activated carbon plate 34 is sleeved on the inner side of the mounting bracket 35.

[0034] In this embodiment, the side of the activated carbon plate 34 is attached to the inner wall of the filter box 2 and the inner side of the door 37, respectively, to ensure that the mounting bracket 35 can adsorb odors in the flue gas.

[0035] For details, please refer to Figure 1 The filter box 2 has a door 37 hinged to the front, and a control panel 38 is fixedly installed on the front of the door 37.

[0036] In this embodiment, the mounting bracket 34 is replaced by opening the box door 37, and the collection box 23 is removed from the movable seat 20 to clean the impurities in the collection box 23.

[0037] For details, please refer to Figure 6 The filter box 28 has a sealing door 32 hinged to the front.

[0038] In this embodiment, the impurities filtered out of the inner cavity of the filter box 28 are cleaned by opening the sealing door 32.

[0039] Working Principle: In operation, cold water is first placed in the heat exchange box 6, and dust-suppressing water is placed in the water receiving tank 25. Additionally, flue gas is introduced into the spiral heat exchange copper tube 11 through the air inlet pipe 10. Heat exchange occurs between the flue gas in the spiral heat exchange copper tube 11 and the cold water in the heat exchange box 6, thus recovering heat from the flue gas. Then, the flue gas in the spiral heat exchange copper tube 11 is introduced into the inner cavity of the filter box 2 through the air guide pipe 12. At this time, the second water pump 26 is activated to introduce water from the water receiving tank 25 into the inner cavity of the water distribution pipe 30 through the first water guide steel pipe 27, filter box 28, and second water guide steel pipe 29. The water in the water distribution pipe 30 is then atomized and sprayed downwards, thus suppressing dust in the flue gas. The water after dust suppression falls back into the inner cavity of the water receiving tank 25. Furthermore, the filter cotton 33 in the filter box 28 filters the dust in the water. Then, the flue gas moves upwards again, and the filter screen 3 filters the dust in the flue gas again. Additionally, the activated carbon plate 34 further filters the flue gas. Odors in the air are adsorbed, and the adsorbed fumes are discharged from the exhaust pipe 36. At the same time, the servo motor 19 is started to drive the reciprocating screw 18 to rotate. Through the threaded engagement between the reciprocating screw 18 and the moving seat 20, the moving seat 20, the collection box 23 and the scraper 24 move laterally back and forth. The scraper 24 scrapes the dust filtered down from the bottom surface of the filter screen 3, so that the dust is cleaned off and collected by the collection box 23. Finally, the temperature sensor 15 continuously detects the water temperature in the heat exchange box 6. When the temperature sensor 15 detects that the water temperature has reached the predetermined temperature, the control panel 38 controls the electric control valve 9 to open and release hot water. When the lower liquid level sensor 14 detects that the water level has reached this point, the electric control valve 9 is closed. At this time, the first water pump 7 is started so that the water suction pipe 8 automatically introduces the water from the external water supply tank into the heat exchange box 6. When the upper liquid level sensor 13 detects that the water level has reached this high point, the control panel 38 controls the first water pump 7 to shut down.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A waste gas treatment device with flue gas recovery function, comprising a base (1), characterized in that: A filter box (2) is provided on the top surface of the base (1). A filter screen (3) is fixedly fitted inside the filter box (2). A dust suppression mechanism (5) is provided on the filter box (2). An exhaust pipe (36) is fixedly fitted on the top of the filter box (2). A heat exchange box (6) is provided on the top surface of the base (1). A first water pump (7) is fixedly installed on the top surface of the heat exchange box (6). A suction pipe (8) is fixedly connected to the input end of the first water pump (7). The output end of the first water pump (7) extends into the inner cavity of the heat exchange box (6). An electric control valve (9) is fixedly installed at the bottom of the base (1). The end of the electric control valve (9) extends into the inner cavity of the heat exchange box (6). An air inlet pipe (10) is fixedly sleeved on the side of the heat exchange box (6). The end of the air inlet pipe (10) extends into the inner cavity of the heat exchange box (6) and is fixedly connected to a spiral heat exchange copper tube (11). The top end of the spiral heat exchange copper tube (11) extends into the top of the heat exchange box (6) and is fixedly connected to a guide pipe (12). The end of the guide pipe (12) extends into the inner cavity of the filter box (2). An upper liquid level sensor (13) is fixedly installed on the upper part of the inner cavity of the heat exchange box (6). A lower liquid level sensor (14) is fixedly installed on the lower part of the inner cavity of the heat exchange box (6). A temperature sensor (15) is fixedly installed on the inner wall of the heat exchange box (6). A scraping mechanism (4) is provided on the filter box (2).

2. The waste gas treatment equipment with flue gas recovery function according to claim 1, characterized in that: The scraping mechanism (4) includes a movable box (16) fixedly sleeved on the back of the filter box (2) and a slide rod (17) fixedly sleeved in the inner cavity of the filter box (2). A reciprocating screw (18) is rotatably connected to the inner cavity of the movable box (16). A servo motor (19) is fixedly installed at the end of the movable box (16). The output shaft of the servo motor (19) is connected to the end of the reciprocating screw (18). The outer side of the reciprocating screw (18) is screwed... A movable seat (20) is fitted with a sliding rod (17). The movable seat (20) and the sliding rod (17) are movably fitted together. A slot seat (21) is provided on the top surface of the movable seat (20). A locking block (22) is fitted on the slot seat (21). A collection box (23) is fixedly connected to the top surface of the locking block (22). A scraper (24) is fixedly connected to the top of the inner cavity of the collection box (23). The top surface of the scraper (24) is in contact with the bottom surface of the filter screen (3).

3. The waste gas treatment equipment with flue gas recovery function according to claim 1, characterized in that: The dust suppression mechanism (5) includes a second water pump (26) fixedly installed on the side of the filter box (2) and a water receiving tank (25) fixedly sleeved at the bottom of the inner cavity of the filter box (2). The input end of the second water pump (26) extends into the inner cavity of the water receiving tank (25). The output end of the second water pump (26) is fixedly connected to a first water guide steel pipe (27). The top end of the first water guide steel pipe (27) is fixedly sleeved with a filter box (28). The top end of the filter box (28) is fixedly sleeved with a second water guide steel pipe (29). The end of the second water guide steel pipe (29) extends into the inner cavity of the filter box (2) and is fixedly connected to a water distribution pipe (30). Multiple nozzles (31) are fixedly installed on the bottom surface of the water distribution pipe (30). The inner cavity of the filter box (28) is sleeved with filter cotton (33).

4. The waste gas treatment equipment with flue gas recovery function according to claim 1, characterized in that: The filter box (2) is provided with a mounting bracket (35) in its inner cavity, and an activated carbon plate (34) is sleeved on the inner side of the mounting bracket (35).

5. The waste gas treatment equipment with flue gas recovery function according to claim 1, characterized in that: The filter box (2) has a door (37) hinged to its front, and a control panel (38) is fixedly installed on the front of the door (37).

6. The waste gas treatment equipment with flue gas recovery function according to claim 3, characterized in that: The filter box (28) has a sealing door (32) hinged to the front.

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