Condensate water recovery device of natural gas boiler

Abstract

The utility model discloses a natural gas boiler condensate water recovery device which comprises a bottom plate, a boiler body is fixedly arranged on the bottom plate, a tank body is arranged on one side of the boiler body and communicated with the boiler body through a gas guide pipe, a supporting frame is fixedly arranged at the bottom of the tank body and fixedly connected with the bottom plate, and a filter screen is rotationally arranged in the tank body. A filter screen is arranged in the tank body, a rotating assembly for driving the filter screen to rotate is arranged between the filter screen and the tank body, a scraping plate is arranged on the tank body in a sliding mode, penetrates through the tank body and extends into the tank body, the scraping plate is attached to the upper surface of the filter screen, an exhaust pipe is arranged on the tank body and located below the filter screen, and a condensation assembly for condensing smoke is further arranged on the tank body. The cleaning effect on the filter screen is improved, and smoke circulation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas boilers, in particular to a condensate water recovery device for a natural gas boiler. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. When a boiler using natural gas as fuel is working, it will produce a lot of flue gas containing soot impurities, which will cause pollution if directly discharged into the air. Therefore, condensed water is needed to condense the flue gas.

[0003] A Chinese patent document with publication number CN212789842U discloses a condensate recycling device for a natural gas boiler, comprising a boiler body, a filter tank and a condensate tank are arranged on the right side of the boiler body, an air guide pipe is fixedly connected to the upper end of the right side of the boiler body, the other end of the air guide pipe is fixedly connected to the middle part of the upper end of the filter tank, an annular rod is arranged in the middle part of the inner part of the filter tank, a filter screen is fixedly connected to the inner part of the annular rod, the left and right sides of the annular rod are respectively rotatably connected to the left and right sides of the filter tank through a rotating shaft, the left end of one of the rotating shafts extends to the outside of the filter tank and is fixedly connected to a rotating plate, and a limit mechanism is arranged on the left outer side wall of the filter tank. Water can be fed into the filter tank through the provided water inlet pipe, so that the filter screen can be cleaned.

[0004] The disadvantage of the above disclosed solution is that since dust and impurities in the flue gas easily adhere to the filter and block the filter holes of the filter, it is not easy to clean the dust and impurities on the filter when the filter is cleaned only with water, resulting in poor effect of cleaning the filter and hindering the circulation of flue gas. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a natural gas boiler condensate recovery device. The scraper is in contact with the upper surface of the filter screen. The scraper can clean the filter screen when the filter screen rotates, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a condensate recovery device for a natural gas boiler, comprising a bottom plate, on which a boiler body is fixedly arranged, a tank body is arranged on one side of the boiler body, the tank body is connected with the boiler body through an air guide pipe, a support frame is fixedly arranged at the bottom of the tank body, the support frame is fixedly connected to the bottom plate, a filter screen is rotatably arranged in the tank body, a rotating component for driving the filter screen to rotate is arranged between the filter screen and the tank body, a scraper is slidably arranged on the tank body, the scraper passes through the tank body and extends to the interior of the tank body, the scraper is fitted with the upper surface of the filter screen, an exhaust pipe is arranged on the tank body, the exhaust pipe is located below the filter screen, and a condensation component for condensing flue gas is also arranged on the tank body.

[0007] Furthermore, a connecting rod is fixedly provided on the top of the filter, a large gear is fixedly sleeved on the connecting rod, a connecting plate is fixedly provided on the tank body, a small gear is rotatably provided on the connecting plate, the small gear is meshed with the large gear, a second friction wheel is coaxially fixedly provided on the small gear, a first friction wheel is rotatably provided on the connecting plate, the first friction wheel and the second friction wheel are frictionally transmitted, and fan blades are coaxially fixedly provided on the first friction wheel.

[0008] Furthermore, the rotating assembly includes a first bevel gear, which is fixedly connected to the bottom of the filter screen, a support block is fixedly arranged in the tank body, a second bevel gear is rotatably arranged on the support block, the second bevel gear is meshed with the first bevel gear, and a motor is fixedly arranged on the outside of the tank body, and the output shaft of the motor passes through the tank body and is coaxially fixedly connected to the second bevel gear.

[0009] Furthermore, the condensation component includes a nozzle, which is fixedly arranged inside the tank body. A water pump is fixedly arranged outside the tank body. The water pump is connected to the nozzle through a first connecting pipe, and the water pump is connected to the lower part of the tank body through a water pumping pipe.

[0010] Furthermore, a water outlet is provided at the bottom of the tank body, and a control valve is provided on the water outlet.

[0011] Furthermore, a heat exchanger is fixedly arranged at the bottom of the tank body, a heat conducting plate is fixedly arranged at the top of the heat exchanger, the heat exchanger passes through the tank body and is fixedly arranged with a heat conducting pipe, and the heat conducting pipe is fixedly connected to the boiler body.

[0012] Furthermore, a magnet is fixedly arranged on the scraper, and the magnet is adsorbed on the tank body to position the scraper.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The scraper is fitted with the upper surface of the filter, and a rotating assembly is provided between the filter and the tank body to drive the filter to rotate. When there are a lot of impurities accumulated on the filter, the starter motor drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the filter to rotate. During the rotation of the filter, the scraper fits the filter, so the scraper can scrape off the impurities on the surface of the filter, and the scraped impurities will adhere to one side of the scraper. This improves the cleaning effect of the filter and is beneficial to the flow of smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the structural tank body of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the structural tank of the utility model at different angles;

[0018] Figure 4 This is a cross-sectional view of a tank body of a first structural embodiment of the utility model;

[0019] Figure 5 It is a cross-sectional view of the tank body at different angles of the first structural embodiment of the utility model;

[0020] Figure 6 A three-dimensional diagram of a scraper of a first embodiment of the present utility model;

[0021] Figure 7 This is a cross-sectional view of the tank body of the second structural embodiment of the utility model;

[0022] Figure 8 It is an exploded view of some accessories of the second structural embodiment of the utility model.

[0023] In the figure: 1. boiler body; 2. bottom plate; 3. air guide pipe; 4. tank body; 5. scraper; 6. motor; 7. support frame; 8. heat pipe; 9. heat exchanger; 10. water pump; 11. first connecting pipe; 12. exhaust pipe; 13. filter screen; 14. nozzle; 15. suction pipe; 16. heat conductive plate; 17. first bevel gear; 18. control valve; 19. support block; 20. second bevel gear; 21. fan blade; 22. first friction wheel; 23. second friction wheel; 24. connecting plate; 25. small gear; 26. large gear; 27. connecting rod. DETAILED DESCRIPTION

[0024] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] For example, see Figure 1-Figure 6 This embodiment provides a technical solution: a natural gas boiler condensate recovery device, comprising a bottom plate 2, a boiler body 1 is fixedly mounted on the upper surface of the bottom plate 2, a tank body 4 is mounted on one side of the boiler body 1, a support frame 7 is fixedly mounted on the bottom of the tank body 4 to support the tank body 4, and the support frame 7 is fixedly mounted on the upper surface of the bottom plate 2. An air guide pipe 3 communicating with the interior of the tank body 4 is installed in the middle of the top, and the other end of the air guide pipe 3 is communicated with the interior of the boiler body 1.

[0026] A filter screen 13 is rotatably mounted in the tank body 4, and a rotating assembly for driving the filter screen 13 to rotate is installed between the filter screen 13 and the tank body 4. The rotating assembly includes a first bevel gear 17, and the first bevel gear 17 is fixedly mounted in the middle of the bottom of the filter screen 13 through a first rotating shaft. A support block 19 is also fixedly mounted in the tank body 4, and a second bevel gear 20 is rotatably mounted on the support block 19 through a second rotating shaft, and the second bevel gear 20 is meshed with the first bevel gear 17. A motor 6 is fixedly mounted on the outside of the tank body 4, and the output shaft of the motor 6 passes through the tank body 4 and is fixedly mounted coaxially with the second bevel gear 20.

[0027] A scraper 5 is installed on the tank body 4. A through hole is opened on the tank body 4. The scraper 5 passes through the through hole on the tank body 4 and is installed in a sliding manner with the through hole. One side of the scraper 5 extends to the inside of the tank body 4 and fits the upper surface of the filter 13. Baffles that match the through hole are also integrally formed on both sides of the slide plate 5 to prevent smoke from escaping through the through hole. A magnet is fixedly installed on the scraper 5, and the magnet is adsorbed on the tank body 4 to position the scraper 5. An exhaust pipe 12 connected to the inside of the tank body 4 is installed on the tank body 4, and the exhaust pipe 12 is located below the filter 13.

[0028] The tank body 4 is also provided with a condensation assembly for condensing the flue gas, and the condensation assembly includes a nozzle 14, and the nozzle 14 is fixedly installed inside the tank body 4. A water pump 10 is fixedly installed outside the tank body 4, and the water pump 10 is connected to the nozzle 14 through a first connecting pipe 11, and the water pump 10 is connected to the lower part of the tank body 4 through a water pumping pipe 15. A water outlet is installed at the bottom of the tank body 4, and a control valve 18 is installed on the water outlet.

[0029] A heat exchanger 9 is fixedly installed at the bottom of the tank body 4, and a plurality of heat conducting fins 16 are fixedly installed on the top of the heat exchanger 9, and the plurality of heat conducting fins 16 are evenly spaced and arranged. The heat exchanger 9 passes downward through the tank body 4 and is fixedly installed with a heat conducting pipe 8, which is fixedly installed with the boiler body 1.

[0030] The working principle of a natural gas boiler condensate recovery device provided in this embodiment is as follows:

[0031] When in use, the tail flue gas of the boiler body 1 enters the tank body 4 through the air guide pipe 3, and then is filtered through the filter 13, and the filtered flue gas enters the bottom of the filter 13. The water pump 10 is started to extract the condensed water at the bottom of the tank body 4, and then the condensed water is sprayed out from the nozzle 14 through the first connecting pipe 11. The nozzle 14 sprays the condensed water to spray and cool the flue gas in the tank body 4, and the cooled flue gas is discharged through the exhaust pipe 12. After absorbing heat, the condensed water falls to the bottom of the tank body 4, and the heat conducting sheet 16 introduces the heat of the condensed water into the heat exchanger 9. The heat exchanger 9 introduces the heat into the boiler body 1 through the heat conducting pipe 8, which is convenient for saving energy, and the condensed water can continue to absorb heat and cool the flue gas after the heat is extracted.

[0032] When there are many impurities accumulated on the filter 13, the starter motor 6 drives the second bevel gear 20 to rotate, the second bevel gear 20 drives the first bevel gear 17 to rotate, and the first bevel gear 17 drives the filter 13 to rotate. During the rotation of the filter 13, since the scraper 5 is in contact with the filter 13, the scraper 5 can scrape off the impurities on the upper surface of the filter 13, and the scraped impurities will adhere to one side of the scraper 5. This improves the cleaning effect of the filter 13 and is beneficial to the flow of smoke.

[0033] When it is necessary to discharge the condensed water, the control valve 18 can be opened to discharge the condensed water. When cleaning the scraper 5, the scraper 5 only needs to be pulled outwards, and then the impurities adhered to the scraper 5 are cleaned.

[0034] For example 2, please refer to Figure 7-Figure 8 Based on the first embodiment, this embodiment provides the following technical solutions:

[0035] A connecting rod 27 is fixedly installed in the middle of the upper surface of the filter 13, and a large gear 26 is fixedly sleeved on the connecting rod 27. A connecting plate 24 is fixedly installed on one side of the tank body 4. The connecting plate 24 is installed horizontally. A small gear 25 is rotatably installed on the connecting plate 24 through the third rotating shaft. The small gear 25 meshes with the large gear 26. The gear ratio of the large gear 26 and the small gear 25 is 3:1 or 5:1. The third rotating shaft of the small gear 25 passes through the connecting plate upward and is coaxially fixedly installed with a second friction wheel 23. A first friction wheel 22 is rotatably installed on the connecting plate 24 through a fourth rotating shaft. The first friction wheel 22 and the second friction wheel 23 are frictionally driven. The first friction wheel 22 and the second friction wheel 23 are pressed against each other. The first friction wheel 22 and the second friction wheel 23 transmit power through friction force. The first friction wheel 22 is coaxially fixedly installed with a fan blade 21 through the fourth rotating shaft.

[0036] Based on the working principle of the first embodiment, the working principle of this embodiment is as follows:

[0037] The starting motor 6 drives the filter 13 to rotate, the filter 13 drives the connecting rod 27 to rotate, the connecting rod 27 drives the large gear 26 to rotate, the large gear 26 drives the small gear 25 to rotate, the small gear 25 drives the second friction wheel 23 to rotate, the second friction wheel 23 drives the first friction wheel 22 to rotate, and the first friction wheel 22 drives the fan blades 21 to rotate. Since the gear ratio of the large gear 26 and the small gear 25 is 3:1 or 5:1, the rotation of the large gear 26 increases the rotation speed of the small gear 25, so that when the filter 13 rotates, the fan blades 21 will rotate rapidly, the fan blades 21 will improve the air supply efficiency, and further improve the heat exchange efficiency.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A condensate recovery device for a natural gas boiler, comprising a bottom plate (2) on which a boiler body (1) is fixedly mounted, characterized in that: A tank body (4) is provided on one side of the boiler body (1). The tank body (4) is connected to the boiler body (1) through an air guide pipe (3). A support frame (7) is fixedly provided at the bottom of the tank body (4). The support frame (7) is fixedly connected to the bottom plate (2). A filter screen (13) is rotatably provided in the tank body (4). A rotating assembly for driving the filter screen (13) to rotate is provided between the filter screen (13) and the tank body (4). A scraper (5) is slidably provided on the tank body (4). The scraper (5) passes through the tank body (4) and extends to the inside of the tank body (4). The scraper (5) is in contact with the upper surface of the filter screen (13). An exhaust pipe (12) is provided on the tank body (4). The exhaust pipe (12) is located below the filter screen (13). A condensation assembly for condensing flue gas is also provided on the tank body (4).

2. The natural gas boiler condensate recovery device according to claim 1, characterized in that: A connecting rod (27) is fixedly provided on the top of the filter screen (13), a large gear (26) is fixedly sleeved on the connecting rod (27), a connecting plate (24) is fixedly provided inside the tank body (4), a small gear (25) is rotatably provided on the connecting plate (24), the small gear (25) meshes with the large gear (26), a second friction wheel (23) is coaxially fixedly provided on the small gear (25), a first friction wheel (22) is rotatably provided on the connecting plate (24), the first friction wheel (22) and the second friction wheel (23) are frictionally driven, and a fan blade (21) is coaxially fixedly provided on the first friction wheel (22).

3. The natural gas boiler condensate recovery device according to claim 1, characterized in that: The rotating assembly comprises a first bevel gear (17), the first bevel gear (17) being fixedly connected to the bottom of the filter screen (13); a support block (19) being fixedly arranged inside the tank body (4); a second bevel gear (20) being rotatably arranged on the support block (19); the second bevel gear (20) being meshed with the first bevel gear (17); a motor (6) being fixedly arranged outside the tank body (4); an output shaft of the motor (6) passing through the tank body (4) and being coaxially fixedly connected to the second bevel gear (20).

4. The natural gas boiler condensate recovery device according to claim 1, characterized in that: The condensation assembly comprises a nozzle (14), the nozzle (14) being fixedly arranged inside the tank body (4), a water pump (10) being fixedly arranged outside the tank body (4), the water pump (10) being connected to the nozzle (14) via a first connecting pipe (11), and the water pump (10) being connected to the lower part of the interior of the tank body (4) via a water pumping pipe (15).

5. The natural gas boiler condensate recovery device according to claim 4, characterized in that: The bottom of the tank body (4) is provided with a water outlet, and a control valve (18) is provided on the water outlet.

6. The natural gas boiler condensate recovery device according to claim 1, characterized in that: A heat exchanger (9) is fixedly arranged at the bottom of the tank body (4), a heat conducting plate (16) is fixedly arranged at the top of the heat exchanger (9), the heat exchanger (9) passes through the tank body (4) and is fixedly arranged with a heat conducting pipe (8), and the heat conducting pipe (8) is fixedly connected to the boiler body (1).

7. The natural gas boiler condensate recovery device according to claim 1, characterized in that: A magnet is fixedly arranged on the scraper (5), and the magnet is adsorbed on the tank body (4) to position the scraper (5).

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