Heat exchange device for boiler

Abstract

The heat exchange device for the boiler comprises a heat exchange box, a threaded heat exchange pipe is arranged in the heat exchange box, a second water guide pipe is arranged at one end of the threaded heat exchange pipe, and the end, away from the second water guide pipe, of the threaded heat exchange pipe is fixedly connected with a third water guide pipe. The end, away from the threaded heat exchange pipe, of the second water guide pipe penetrates through the heat exchange box and is fixedly connected with a water pump, the input end of the water pump is fixedly connected with a first water guide pipe, and the end, away from the water pump, of the first water guide pipe is fixedly connected with a cold water tank. One end, far away from the threaded heat exchange pipe, of the third water guide pipe penetrates through the heat exchange box and is fixedly connected with a hot water tank, and a heat preservation layer is arranged on the inner wall of the hot water tank. Dust in smoke is effectively prevented from entering the heat exchange box and being attached to the outer wall of the threaded heat exchange pipe to affect the heat exchange efficiency.

Description

Technical Field

[0001] The utility model relates to the field of boiler heat exchange devices, in particular to a heat exchange device for a 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. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The original meaning of pot refers to a water container heated on fire, and furnace refers to the place where fuel is burned. The boiler consists of two major parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives, or can be converted into mechanical energy through a steam power device, or then converted into electrical energy through a generator. A boiler that provides hot water is called a hot water boiler, which is mainly used for life and also has a small number of applications in industrial production. A boiler that generates steam is called a steam boiler, which is often used in thermal power plants, ship locomotives and industrial and mining enterprises.

[0003] A heat exchange device is a general-purpose machine whose main function is to transfer heat. It is usually called a heat exchanger, or heat exchanger for short. Heat exchangers are widely used in chemical, petroleum, refrigeration, power, food and other sectors. Their design, manufacture and operation play a very critical role in the production process.

[0004] The use of boilers is often inseparable from heat exchange devices. Boiler heat exchange devices are mainly used for the recovery and reuse of flue gas generated during the use of boilers. Existing boiler heat exchange devices have low heat exchange efficiency and cannot store the converted heat well, resulting in waste of resources. At the same time, they cannot remove dust and toxic substances in the flue gas, thus causing environmental pollution. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a heat exchange device for a boiler.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a heat exchange device for a boiler, comprising a heat exchange box, wherein a threaded heat exchange tube is arranged inside the heat exchange box, one end of the threaded heat exchange tube is fixedly connected to a second water conduit, and the end of the threaded heat exchange tube away from the second water conduit is fixedly connected to a third water conduit;

[0007] One end of the second water pipe away from the heat exchange pipe passes through the heat exchange box and is fixedly connected to a water pump, the input end of the water pump is fixedly connected to the first water pipe, and one end of the first water pipe away from the water pump is fixedly connected to a cold water tank;

[0008] One end of the third water conduit away from the threaded heat exchange tube passes through the heat exchange box and is fixedly connected to a hot water tank, and an insulation layer is provided on the inner wall of the hot water tank;

[0009] An air duct is rotatably connected to the upper surface of the heat exchange box, an end of the air duct away from the heat exchange box is fixedly connected to a smoke exhaust pipe, and an end of the smoke exhaust pipe away from the air duct is provided with a boiler.

[0010] As a further description of the above technical solution:

[0011] An exhaust pipe is fixedly connected to the front surface of the heat exchange box, and a pipe cover is rotatably connected to one end of the exhaust pipe away from the heat exchange box. An activated carbon filter is arranged on the inner wall of the pipe cover.

[0012] As a further description of the above technical solution:

[0013] A drain pipe is fixedly connected to the right surface of the hot water tank, and a faucet is arranged at one end of the drain pipe away from the hot water tank.

[0014] As a further description of the above technical solution:

[0015] A valve is provided in the middle section of the second water conduit and on the left side of the first flange, and a first filter plate is fixedly connected to one end of the second water conduit away from the water pump.

[0016] As a further description of the above technical solution:

[0017] One end of the air guide pipe away from the smoke exhaust pipe is fixedly connected to a second filter plate, and a middle section of the air guide pipe is provided with a second connecting flange.

[0018] As a further description of the above technical solution:

[0019] The front surface of the cold water tank is provided with a water filling port.

[0020] As a further description of the above technical solution:

[0021] The middle section of the second water conduit is fixedly connected with a first connecting flange.

[0022] The utility model has the following beneficial effects:

[0023] 1. Compared with the prior art, the heat exchange device for a boiler greatly increases the contact area with the flue gas through the arrangement of the threaded heat exchange tubes, thereby increasing the heat exchange efficiency.

[0024] 2. Compared with the prior art, this boiler heat exchange device effectively filters impurities in water through the setting of the first filter plate, preventing impurities in water from solidifying with the inner wall of the threaded heat exchange tube, thereby adhering to the inner wall of the heat exchange tube and causing blockage of the heat exchange tube.

[0025] 3. Compared with the prior art, this boiler heat exchange device effectively removes dust in the flue gas through the setting of the second filter plate, prevents dust in the flue gas from entering the heat exchange box and adhering to the outer wall of the threaded heat exchange tube, thereby affecting the heat exchange efficiency, and also increases the service life of the threaded heat exchange tube.

[0026] 4. Compared with the prior art, this boiler heat exchange device effectively removes toxic substances in the flue gas through the setting of an activated carbon filter, prevents the exhaust flue gas from polluting the environment, and the setting of a hot water tank and an insulation layer on the inner wall of the hot water tank enables the heat converted by the boiler heat exchange device to be preserved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the internal structure of a heat exchange device for a boiler proposed in the utility model;

[0028] Figure 2 This is a top view of a heat exchange device for a boiler proposed in the utility model;

[0029] Figure 3 This is a right side view of a heat exchange device for a boiler proposed by the utility model;

[0030] Figure 4 The utility model is a schematic diagram of the overall structure of a heat exchange device for a boiler.

[0031] Legend:

[0032] 1. Heat exchange box; 2. Water pump; 3. First water pipe; 4. Cold water tank; 5. Water inlet; 6. Boiler device; 7. First filter plate; 8. Valve; 9. Smoke exhaust pipe; 10. Air pipe; 11. Second water pipe; 12. First connecting flange; 13. Second connecting flange; 14. Second filter plate; 15. Threaded heat exchange tube; 16. Third water pipe; 17. Insulation layer; 18. Faucet; 19. Drain pipe; 20. Hot water tank; 21. Activated carbon filter; 22. Exhaust pipe; 23. Pipe cover. DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Reference Figure 1-3 The utility model provides a heat exchange device for a boiler: comprising a heat exchange box 1, a threaded heat exchange tube 15 is arranged inside the heat exchange box 1, the threaded heat exchange tube 15 can transfer the heat of the flue gas in the heat exchange box 1 into the cold water inside the threaded heat exchange tube 15, one end of the threaded heat exchange tube 15 is fixedly connected to the second water pipe 11, the end of the threaded heat exchange tube 15 away from the second water pipe 11 is fixedly connected to the third water pipe 16, the front surface of the heat exchange box 1 is fixedly connected to the exhaust pipe 22, the exhaust pipe 22 is used to discharge The flue gas that has lost heat remaining in the heat exchanger box 1 is rotatably connected to a pipe cover 23 at one end of the exhaust pipe 22 away from the heat exchanger box 1. An activated carbon filter 21 is provided on the inner wall of the pipe cover 23. The setting of the pipe cover 23 here can facilitate the replacement of the activated carbon filter 21. The activated carbon filter 21 can effectively remove toxic gases contained in the exhaust flue gas, thereby achieving an environmental protection effect. The upper surface of the heat exchanger box 1 is fixedly connected to an air duct 10, which is used to pass the flue gas in the boiler device 6 into the heat exchanger box 1.

[0036] One end of the air duct 10 away from the heat exchange box 1 is fixedly connected to a flue gas exhaust pipe 9, which is used to discharge the flue gas in the boiler device 6. The boiler device 6 is provided at one end of the flue gas exhaust pipe 9 away from the air duct 10. One end of the air duct 10 away from the flue gas exhaust pipe 9 is fixedly connected to a second filter plate 14. A second connecting flange 13 is provided in the middle section of the air duct 10. The second filter plate 14 is mainly used to filter dust in the flue gas to prevent it from entering the heat exchange box 1 and adhering to the outer wall of the threaded heat exchange tube 15, thereby affecting the heat exchange efficiency of the threaded heat exchange tube 15. The setting of the second connecting flange 13 can facilitate the replacement of the second filter plate 14.

[0037] The end of the second water pipe 11 away from the threaded heat exchange tube 15 passes through the heat exchange box 1 and is fixedly connected to a water pump 2. The water pump 2 is used to transport water in the cold water tank 4 to the threaded heat exchange tube 15. The input end of the water pump 2 is fixedly connected to the first water pipe 3. The end of the first water pipe 3 away from the water pump 2 is fixedly connected to the cold water tank 4. A valve 8 is provided in the middle section of the second water pipe 11 and on the left side of the first connecting flange 12. The valve 8 here is used to control the entry of cold water into the threaded heat exchange tube 15. The end of the second water pipe 11 away from the water pump 2 is fixedly connected to a first filter plate 7. The first filter plate 7 is mainly used to filter impurities in the water to prevent impurities from entering and adhering to the inner wall of the threaded heat exchange tube 15 to cause blockage. A water injection port 5 is provided on the front surface of the cold water tank 4. The water injection port 5 is used to inject cold water into the cold water tank 4. The middle section of the second water pipe 11 is fixedly connected to the first connecting flange 12. The setting of the first connecting flange 12 can facilitate the replacement of the first filter plate 7.

[0038] One end of the third water conduit 16 away from the threaded heat exchange tube 15 passes through the heat exchange box 1 and is fixedly connected to a hot water tank 20. The hot water tank 20 is used to store hot water. The inner wall of the hot water tank 20 is provided with an insulation layer 17. The insulation layer 17 can play a good insulation role for the hot water in the hot water tank 20. A drain pipe 19 is fixedly connected to the right surface of the hot water tank 20. A faucet 18 is provided at the end of the drain pipe 19 away from the hot water tank 20. The faucet 18 can facilitate the use of hot water in the hot water tank 20.

[0039] Working principle: When in use, under the action of the water pump 2, the water in the cold water tank 4 flows into the threaded heat exchange tube 15 through the first water pipe 3 and the second water pipe 11. The first filter plate 7 is set at one end of the second water pipe 11 to remove impurities in the water to prevent them from adhering to the inner wall of the threaded heat exchange tube 15 and causing blockage. The flue gas generated during the use of the boiler device 6 is introduced into the heat exchange box 1 through the air pipe 10. The second filter plate 14 set at one end of the air pipe 10 effectively removes dust in the flue gas and prevents dust from entering the heat exchange box 1 and adhering to the outer wall of the threaded heat exchange tube 15 to affect the heat exchange efficiency. Through the action of the threaded heat exchange tube 15, the heat in the flue gas in the heat exchange box 1 is transferred into the inside of the threaded heat exchange tube 15, so that the cold water inside the threaded heat exchange tube 15 becomes hot, and then flows into the hot water tank 20 through the third water pipe 16. The remaining flue gas in the heat exchange box 1 is discharged through the exhaust pipe 22 through the activated carbon filter 21.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can 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 should be included in the protection scope of the present invention.

Claims

1. A heat exchange device for a boiler, comprising a heat exchange box (1), characterized in that: A threaded heat exchange tube (15) is arranged inside the heat exchange box (1), the outer wall of the threaded heat exchange tube (15) is threaded, one end of the threaded heat exchange tube (15) is fixedly connected to the second water conduit (11), and the end of the threaded heat exchange tube (15) away from the second water conduit (11) is fixedly connected to the third water conduit (16); The end of the second water pipe (11) away from the threaded heat exchange tube (15) passes through the heat exchange box (1) and is fixedly connected to the water pump (2); the input end of the water pump (2) is fixedly connected to the first water pipe (3); and the end of the first water pipe (3) away from the water pump (2) is fixedly connected to the cold water tank (4); One end of the third water conduit (16) away from the threaded heat exchange tube (15) passes through the heat exchange box (1) and is fixedly connected to a hot water tank (20); the inner wall of the hot water tank (20) is provided with a heat insulation layer (17); An air duct (10) is fixedly connected to the upper surface of the heat exchange box (1); an end of the air duct (10) away from the heat exchange box (1) is fixedly connected to a smoke exhaust pipe (9); an end of the smoke exhaust pipe (9) away from the air duct (10) is provided with a boiler device (6); and an end of the air duct (10) away from the smoke exhaust pipe (9) is fixedly connected to a second filter plate (14).

2. A heat exchange device for a boiler according to claim 1, characterized in that: An exhaust pipe (22) is fixedly connected to the front surface of the heat exchange box (1), and one end of the exhaust pipe (22) away from the heat exchange box (1) is rotatably connected to a pipe cover (23), and an activated carbon filter (21) is provided on the inner wall of the pipe cover (23).

3. A heat exchange device for a boiler according to claim 1, characterized in that: A drainage pipe (19) is fixedly connected to the right surface of the hot water tank (20), and a faucet (18) is provided at one end of the drainage pipe (19) away from the hot water tank (20).

4. A heat exchange device for a boiler according to claim 1, characterized in that: One end of the second water conduit (11) away from the water pump (2) is fixedly connected to a first filter plate (7).

5. A heat exchange device for a boiler according to claim 1, characterized in that: The middle section of the air guide pipe (10) is provided with a second connecting flange (13).

6. A heat exchange device for a boiler according to claim 1, characterized in that: The front surface of the cold water tank (4) is provided with a water injection port (5).

7. A heat exchange device for a boiler according to claim 1, characterized in that: The middle section of the second water conduit (11) is fixedly connected to a first connecting flange (12).

8. A heat exchange device for a boiler according to claim 1, characterized in that: A valve (8) is provided in the middle section of the second water conduit (11) and on the left side of the first connecting flange (12).

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