CN112361363A

CN112361363A - Flue waste heat recovery heater

Info

Publication number: CN112361363A
Application number: CN202011251081.4A
Authority: CN
Inventors: 黄春梅
Original assignee: Individual
Current assignee: Sinoma Energy Conservation Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-02-12
Anticipated expiration: 2040-11-11
Also published as: CN112361363B

Abstract

The invention relates to the technical field of waste heat recovery heaters, in particular to a flue waste heat recovery heater which comprises a box body, wherein a heat dissipation barrel is arranged inside the box body, an air pipe network is arranged inside the heat dissipation barrel, the air inlet end of the air pipe network is connected with a filter box, one side of the filter box is communicated with an air blower, a first scraper blade and a second scraper blade are rotatably arranged inside the box body, and the first scraper blade and the second scraper blade are respectively contacted with the outer wall and the inner wall of the heat dissipation barrel. The flue waste heat recovery heater can utilize heat carried by flue gas in a flue, improves the utilization rate of heat energy, can wipe the side wall of the heat dissipation barrel, improves the heat dissipation effect and improves the practicability of the use.

Description

Flue waste heat recovery heater

Technical Field

The invention relates to the technical field of waste heat recovery heaters, in particular to a flue waste heat recovery heater.

Background

The large boiler is far away from the chimney, a flue needs to be additionally arranged between the boiler and the chimney, and the flue gas is discharged through the flue.

A large amount of heat can be taken away to the discharge in the boiler to the flue gas, and a large amount of heat is arranged to the air in, causes a large amount of losses of heat, causes the waste of the energy.

Chinese patent CN201672653U discloses a flue waste heat recovery heater, which comprises a shell, a heating pipe and an air pipe; the shell is a water jacket interlayer, and the upper end and the lower end of the shell are provided with a water inlet and a water outlet; the heating pipes are arranged in the shell and are communicated with each other, and the heating pipes are communicated with the water jacket interlayer of the shell; the air pipe is semicircular, and the pipe wall of the inner side of the air pipe is provided with a hole and is arranged between the heating shell and the heat pipe. When the heating device is used, the heater is integrally arranged in the flue, the flue gas of the boiler is discharged from the space between the heating pipes through the chimney, the flue gas exchanges heat with water in the heating pipes in the discharging process, and the smoke dust on the outer wall of the heating pipes or in the flue is removed after the built-in air pipe ventilates. The water is heated and then discharged for standby application, and the waste heat of the flue gas is recovered through the heat exchange mode. However, this heating method can cause scale to be easily formed on the inner wall of the heating pipe, and the heating efficiency will be greatly affected after long-term use. The flue gas used for heating also contains a large amount of smoke dust, and the smoke dust is easy to attach to the outer wall of the heating pipe or in the flue, and can also influence the heating efficiency.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the flue waste heat recovery heater which can utilize the heat carried by the inner flue gas of the flue, improve the utilization rate of the heat energy, scrape the side wall of the heat dissipation barrel, improve the heat dissipation effect of the heat dissipation barrel and improve the practicability of the use of the heat dissipation barrel.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a flue waste heat recovery heater comprises a box body, wherein four supporting legs are fixedly connected to the bottom end of the box body, a top plate is fixedly connected to the top end of the box body through screws, a heat dissipation barrel is fixedly connected to the bottom end of the top plate, an air pipe network is arranged inside the heat dissipation barrel, an air inlet end and an air outlet end of the air pipe network penetrate through the top plate and extend to the upper side of the top plate, a first flange is fixedly connected to the air inlet end of the air pipe network, a motor is fixedly connected to the bottom end of the box body, a rotating shaft is fixedly connected to the output end of the motor, a bearing is embedded into the bottom end of the top plate, the top end of the rotating shaft is inserted into the bearing, the rotating shaft is in sliding fit with the bearing, the top end of the rotating shaft extends into the box body, a first rotating plate is connected to the bottom of the outer side wall of the rotating shaft, the outer side wall of one end of the rotating shaft extending to the interior of the heat dissipation barrel is fixedly connected with a plurality of second rotating plates, one end of the second rotating plates far away from the rotating shaft is fixedly connected with a second scraper, one end of the second scraper far away from the rotating shaft is contacted with the inner side wall of the heat dissipation barrel, the bottom side of the left end of the box body is fixedly connected with a first fixed plate, the top end of the first fixed plate is fixedly connected with a water pump, the output end of the water pump is communicated with the interior of the box body, the upper side of the right end of the box body is connected with a drain pipe, a first valve is connected onto the drain pipe, the upper side of the left end of the box body is fixedly connected with a filter box, a filter plate is fixedly connected inside the filter box, the left end of the filter box is fixedly connected with a second fixed plate, the top end of the second fixed plate, the top end of the connecting pipe is fixedly connected with a second flange, and the second flange is fixedly connected with the first flange through a screw.

Preferably, the bottom end of the filter box is connected with a dust exhaust pipe, and the dust exhaust pipe is connected with a second valve; a third flange is fixedly connected to the exhaust end of the gas pipe network; and a fifth valve is further arranged at a connecting pipe at the upper part of the filter box, and a sixth valve is arranged on a pipeline of the air pipe network close to the third flange.

Preferably, the bottom side of the right end of the box body is connected with a sewage draining pipe, and a third valve is arranged on the sewage draining pipe.

Preferably, the bottom end of the top plate is fixedly connected with a sealing ring, and the bottom end of the sealing ring is in contact with the top end of the box body.

Preferably, a sealing gasket is connected between the first flange and the second flange.

Preferably, the bottom ends of the four support legs are fixedly connected with a support, and the bottom end of the support is fixedly connected with an anti-skid pad.

Preferably, the input end of the water pump is fixedly connected with a water inlet pipe, and a fourth valve is connected to the water inlet pipe.

Preferably, the front end of the box body is provided with a square groove penetrating into the box body, and a transparent baffle is fixedly connected inside the square groove.

(III) advantageous effects

Compared with the prior art, the invention provides a flue waste heat recovery heater, which has the following beneficial effects:

1. this flue waste heat recovery heater filters through the flue gas that the filter got into in the rose box, prevents that the dust granule in the flue gas from entering the inside of air pipe network, causes the jam of air pipe network, guarantees the inside patency of air pipe network, and heat in the flue gas is through air pipe network and heat dissipation bucket give off to the inside water of box in, heats water and supplies people to use.

2. It rotates the pivot through the motor and drives first commentaries on classics board of drive and second commentaries on classics board rotation, first commentaries on classics board and second commentaries on classics board drive first scraper blade and second scraper blade respectively and rotate, first scraper blade and second scraper blade are scraped the lateral wall and the inside wall of heat dissipation bucket respectively and are wiped away, avoid forming the incrustation scale on the heat dissipation bucket, influence the radiating effect of heat dissipation bucket, thereby the heater can utilize the heat that the interior flue gas of flue carried, improve the utilization ratio of heat energy, can scrape the lateral wall of heat dissipation bucket and wipe away, improve its radiating effect, the practicality of its use is improved.

3. When the flue gas is used for heating water, the motor is started to keep the motor rotating at a low speed, and the first rotating plate, the second rotating plate, the first scraper blade and the second scraper blade rotate to enable the water in the box body to be in a flowing state, so that the heat transfer efficiency is improved; meanwhile, the water inside the box body is in a flowing state, so that scales are not easy to form on the surfaces of the outer side wall and the inner side wall of the heat dissipation barrel, and the heating is always in a good state. Even if scale exists, it can be scraped off by the first scraper and the second scraper.

4. The fifth valve is arranged at the connecting pipe on the upper part of the filter box, the sixth valve is arranged on the pipeline of the air pipe network close to the third flange, and the residual smoke dust on the filter plate and on the inner wall of the air pipe network is cleaned by controlling the opening and closing of each valve and the output power of the air blower, so that the heating efficiency is improved.

5. The flow speed of the smoke flowing through the air pipe network is adjusted by controlling the output power of the air blower and the opening and closing degree of the sixth valve, so that the smoke is not easy to deposit on the inner wall of the air pipe network.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic front view of the gas pipe network of the present invention.

In the figure: 1. a box body; 2. a support leg; 3. a top plate; 4. a heat dissipation barrel; 5. a gas pipe network; 6. a first flange; 7. a motor; 8. a rotating shaft; 9. a bearing; 10. a first rotating plate; 11. a first squeegee; 12. a second rotating plate; 13. a second squeegee; 14. a first fixing plate; 15. a water pump; 16. a drain pipe; 17. a first valve; 18. a filter box; 19. a filter plate; 20. a second fixing plate; 21. a blower; 22. a connecting pipe; 23. a second flange; 24. a dust exhaust pipe; 25. a second valve; 26. a blow-off pipe; 27. a third valve; 28. a third flange; 29. a seal ring; 30. a gasket; 31. a support; 32. a non-slip mat; 33. a water inlet pipe; 34. a fourth valve; 35. a transparent baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-3, a flue waste heat recovery heater comprises a box body 1, four support legs 2 are fixedly connected to the bottom end of the box body 1, supports 31 are fixedly connected to the bottom ends of the four support legs 2, anti-slip pads 32 are fixedly connected to the bottom ends of the supports 31, the contact area between the support legs 2 and the ground is increased through the four supports 31, the friction force between the support legs 2 and the ground is increased through the anti-slip pads 32, the stability of the heater is improved, a square groove penetrating into the box body 1 is arranged at the front end of the box body 1, a transparent baffle 35 is fixedly connected inside the square groove, the condition inside the box body 1 is convenient to observe through the transparent baffle 35, a top plate 3 is fixedly connected to the top end of the box body 1 through screws, a sealing ring 29 is fixedly connected to the bottom end of the top plate 3, the bottom end of the sealing ring 29 is contacted with, the bottom end of the top plate 3 is fixedly connected with a heat dissipation barrel 4, an air pipe network 5 is arranged inside the heat dissipation barrel 4, the heat of the internal flue gas is transferred to the inside of the box body 1 through the air pipe network 5 and the heat dissipation barrel 4, an air inlet end and an air outlet end of the air pipe network 5 both penetrate through the top plate 3 and extend to the upper side of the top plate 3, the air inlet end of the air pipe network 5 is fixedly connected with a first flange 6, the air outlet end of the air pipe network 5 is fixedly connected with a third flange 28, the air outlet end of the air pipe is connected with an external flue gas processing device through the third flange 28, the bottom end of the box body 1 is fixedly connected with a motor 7, the model of the motor 7 can be selected from YE2-100, the motor 7 is a known device directly purchased from the market and is used only and is not structurally and functionally improved, and details are not repeated herein, the motor 7 is provided with a control switch matched with the motor, the installation position of the control switch is selected according to the actual use requirement, so that the operation control of an operator is convenient, the output end of the motor 7 is fixedly connected with a rotating shaft 8, the bottom end of the top plate 3 is embedded with a bearing 9 so as to be convenient for dismounting the top plate 3, the top end of the rotating shaft 8 is inserted into the bearing 9, the rotating shaft 8 is in sliding fit with the bearing 9, the top end of the rotating shaft 8 extends into the box body 1, the bottom of the outer side wall of the rotating shaft 8 is connected with a first rotating plate 10, one side of the top end of the first rotating plate 10, which is far away from the rotating shaft 8, is fixedly connected with a first scraping plate 11, one end of the first scraping plate 11, which is close to the rotating shaft 8, is contacted with the outer side wall of the heat-dissipating barrel 4, the outer side wall of one end of the rotating shaft 8, one end of the second scraper 13, which is far away from the rotating shaft 8, is in contact with the inner side wall of the heat dissipation barrel 4, the bottom side of the left end of the box body 1 is fixedly connected with a first fixing plate 14, the top end of the first fixing plate 14 is fixedly connected with a water pump 15, the output end of the water pump 15 is communicated with the interior of the box body 1, the input end of the water pump 15 is fixedly connected with a water inlet pipe 33, the water inlet pipe 33 is connected with a fourth valve 34, the water inlet pipe 33 is connected with an external water pipeline, water in the box body 1 can flow out of the water pump 15 when the water pump 15 stops working through the fourth valve 34, the upper side of the right end of the box body 1 is connected with a drain pipe 16, the drain pipe 16 is connected with a first valve 17, the heated water is discharged through the drain pipe 16 for people to use, the bottom side of the right end of the box body 1 is connected with a drain pipe 26, the drain pipe 26, the upper side of the left end of the box body 1 is fixedly connected with a filter box 18, the interior of the filter box 18 is fixedly connected with a filter plate 19, the bottom end of the filter box 18 is connected with a dust exhaust pipe 24, the dust exhaust pipe 24 is connected with a second valve 25, the dust particles in the filter box 18 can be conveniently discharged through the dust discharge pipe 24, the left end of the filter box 18 is fixedly connected with the second fixing plate 20, the top end of the second fixing plate 20 is fixedly connected with the air blower 21, the output end of the air blower 21 is communicated with the interior of the filter box 18, the output end of the air blower 21 is positioned below the filter plate 19, the top end of the filter box 18 is connected with the connecting pipe 22, the top end of the connecting pipe 22 is fixedly connected with the second flange 23, the second flange 23 is fixedly connected with the first flange 6 through screws, and the top plate 3 can be conveniently disassembled, and a sealing gasket 30 is connected between the first flange 6 and the second flange 23, so that the sealing property of the connection between the first flange 6 and the second flange 23 is ensured.

A fifth valve (not shown) is further provided at the connection pipe 22 at the upper portion of the filtering tank 18, and a sixth valve (not shown) is provided at the pipe of the air pipe network 5 near the third flange 28.

When a large amount of soot remains on the filter plate 19 and affects the filtering effect, the second valve 25 is opened to discharge the soot accumulated in the filter tank 18 through the exhaust pipe 24. Then, the fifth valve at the connecting pipe 22 at the upper part of the second valve 25 and the filter box 18 is closed, the output power of the blower 21 is increased, the blower 21 is used for blowing air into the filter box 18 to increase the pressure, after the pressure is increased to a certain degree, the second valve 25 is suddenly opened, as the pressure in the filter box 18 is instantly reduced, the residual smoke dust on the filter plate 19 can be separated from the filter plate 19, then the second valve 25 is closed again, and the operation is repeated, so that the residual smoke dust on the filter plate 19 can be cleaned.

When smoke dust remains on the inner wall of the air pipe network 5, closing a sixth valve and a second valve 25 on a pipeline of the air pipe network 5 close to a third flange 28, opening a fifth valve at a connecting pipe 22 at the upper part of the filter box 18, simultaneously increasing the output power of the air blower 21, blowing air into the filter box 18 and the air pipe network 5 by using the air blower 21 to increase the pressure, and after the pressure is increased to a certain degree, suddenly opening the sixth valve, so that the smoke dust remaining on the filter plate 19 and on the inner wall of the air pipe network 5 can be separated from the inner walls of the filter plate 19 and the air pipe network 5 respectively due to the instant drop of the pressure in the filter box 18 and the air pipe network 5, so that the smoke dust on the inner wall of the air pipe network 5 is discharged through the third flange 28, and then opening the second valve 25 to discharge the smoke dust falling on the filter plate; thereafter, the sixth valve and the second valve 25 are closed again, and the process is repeated, so that the residual smoke on the filter plate 19 and on the inner wall of the air pipe network 5 can be cleaned.

During the use, can also control the velocity of flow of the inside flue gas of trachea network 5 through the switching degree of controlling the sixth valve and the output of air-blower, through controlling the flue gas velocity of flow constantly change, it is fast often, slow often, prevent from the smoke and dust deposit in the flue gas in trachea network 5 from this.

In conclusion, when the flue waste heat recovery heater is used, firstly, the flue waste heat recovery heater is placed at a position required to be used, then the water inlet pipe 33 is communicated with an external water conveying pipeline, then the fourth valve 34 is opened, the water pump 15 is started, water is conveyed to the inside of the box body 1 through the water pump 15, flue gas in a flue is sucked into the filter box 18 through the air blower 21, the flue gas is filtered through the filter plate 19, the filtered flue gas enters the air pipe network 5 through the exhaust pipe, heat in the flue gas is dissipated into the water through the air pipe network 5 and the heat dissipation barrel 4 and heats the water, the heated water is discharged through the drain pipe 16 for people to use, meanwhile, the motor 7 is started, the motor 7 drives the rotating shaft 8 to rotate the rotating shaft 8 to drive the first rotating plate 10 and the second rotating plate 12 to rotate, the first rotating plate 10 and the second rotating plate 12 drive the first scraping plate 11 and the second scraping plate 13 to rotate respectively, first scraper blade 11 and second scraper blade 13 scrape respectively the lateral wall and the inside wall of heat dissipation bucket 4, avoid forming the incrustation scale on heat dissipation bucket 4, influence the radiating effect of heat dissipation bucket 4.

When the water is heated by the smoke, the motor 7 is started to keep the motor 7 rotating at a low speed, the water inside the box body 1 is in a flowing state by utilizing the rotation of the first rotating plate 10, the second rotating plate 12, the first scraper 11 and the second scraper 13, so that the water adjacent to the heat dissipation barrel 4 flows open after absorbing heat, the water with lower temperature at other places replaces the position of the water after absorbing heat, and the unidirectional heat transfer is continued, thereby the heat transfer efficiency is higher. In addition, because the water in the box body 1 is in a flowing state, scales are not easy to form on the surfaces of the outer side wall and the inner side wall of the heat dissipation barrel 4, and the heating is always in a good state. Even if scale exists, it can be scraped off by the first scraper 11 and the second scraper 13. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a flue waste heat recovery heater, includes box (1), its characterized in that: the bottom end of the box body (1) is fixedly connected with four supporting legs (2), the top end of the box body (1) is fixedly connected with a top plate (3) through screws, the bottom end of the top plate (3) is fixedly connected with a heat dissipation barrel (4), an air pipe network (5) is arranged inside the heat dissipation barrel (4), an air inlet end and an air outlet end of the air pipe network (5) penetrate through the top plate (3) and extend to the upper side of the top plate (3), an air inlet end of the air pipe network (5) is fixedly connected with a first flange (6), the bottom end of the box body (1) is fixedly connected with a motor (7), an output end of the motor (7) is fixedly connected with a rotating shaft (8), a bearing (9) is embedded into the bottom end of the top plate (3), the top end of the rotating shaft (8) is inserted into the bearing (9), the rotating shaft (8) is in sliding fit with the bearing (9), and, the bottom of the outer side wall of the rotating shaft (8) is connected with a first rotating plate (10), one side, far away from the rotating shaft (8), of the top end of the first rotating plate (10) is fixedly connected with a first scraper (11), one end, close to the rotating shaft (8), of the first scraper (11) is in contact with the outer side wall of the radiating barrel (4), the outer side wall, extending to the inner end of the radiating barrel (4), of the rotating shaft (8) is fixedly connected with a plurality of second rotating plates (12), one end, far away from the rotating shaft (8), of the plurality of second rotating plates (12) is fixedly connected with a second scraper (13), one end, far away from the rotating shaft (8), of the second scraper (13) is in contact with the inner side wall of the radiating barrel (4), the bottom side of the left end of the box body (1) is fixedly connected with a first fixing plate (14), the top end of the first fixing plate (14) is fixedly connected with a water pump (15, the upside of the right-hand member of box (1) is connected with drain pipe (16), be connected with first valve (17) on drain pipe (16), upside fixedly connected with rose box (18) of the left end of box (1), inside fixedly connected with filter (19) of rose box (18), the left end fixedly connected with second fixed plate (20) of rose box (18), the top fixedly connected with air-blower (21) of second fixed plate (20), the output of air-blower (21) and the inside switch-on of rose box (18), the output of air-blower (21) is located the below of filter (19), the top of rose box (18) is connected with connecting pipe (22), the top fixedly connected with second flange (23) of connecting pipe (22), second flange (23) are through screw and first flange (6) fixed connection.

2. The flue waste heat recovery heater of claim 1, wherein: the bottom end of the filter box (18) is connected with a dust exhaust pipe (24), and the dust exhaust pipe (24) is connected with a second valve (25); a third flange (28) is fixedly connected with the exhaust end of the air pipe network (5); a fifth valve is further arranged at a connecting pipe at the upper part of the filtering box (18), and a sixth valve is arranged on a pipeline of the air pipe network (5) close to the third flange (28).

3. The flue waste heat recovery heater of claim 2, wherein: the bottom side of the right end of the box body (1) is connected with a sewage discharge pipe (26), and a third valve (27) is arranged on the sewage discharge pipe (26).

4. The flue waste heat recovery heater of claim 3, wherein: the bottom end of the top plate (3) is fixedly connected with a sealing ring (29), and the bottom end of the sealing ring (29) is in contact with the top end of the box body (1).

5. The flue waste heat recovery heater of claim 4, wherein: and a sealing gasket (30) is connected between the first flange (6) and the second flange (23).

6. The flue waste heat recovery heater according to claims 1-5, wherein: the bottom ends of the four support legs (2) are fixedly connected with supports (31), and the bottom ends of the supports (31) are fixedly connected with anti-skid pads (32).

7. The flue waste heat recovery heater according to claims 1-6, wherein: the input end fixedly connected with inlet tube (33) of water pump (15), be connected with fourth valve (34) on inlet tube (33).

8. The flue waste heat recovery heater according to claims 1-7, wherein: the front end of the box body (1) is provided with a square groove penetrating into the box body (1), and a transparent baffle (35) is fixedly connected inside the square groove.