Flue gas heat energy recovery device for boiler

Abstract

The utility model discloses a flue gas heat energy recovery device for a boiler, which relates to the technical field of boiler manufacturing and comprises a boiler body, support legs are welded at the bottom of the boiler body, a filling port is arranged on the surface of the boiler body, a flue gas outlet is arranged on one side of the boiler body, and a waste heat output mechanism is arranged on one side of the flue gas outlet of the boiler body. And a water resource output mechanism is arranged in the waste heat output mechanism. The smoke outlet is arranged to be matched with the smoke conveying pipe, the filter screen groove is fixed through the installation disc and the hinge bolt, harmful particles in smoke are filtered, then the water tank and the heat absorption plate are matched to absorb heat in the smoke, water in the water tank is heated, meanwhile, the quartz sand is matched to further purify the water, and therefore the smoke purifying effect is achieved. And a water adding pipe is arranged to be matched with a water conveying pipe, water adding of a water tank and outputting of heated water are facilitated, a water bucket containing plate is matched, water receiving of workers is facilitated, and the convenience of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of boiler manufacturing technology, and specifically to a flue gas heat energy recovery device for boilers. Background Technology

[0002] With the continuous growth of global energy demand and the increasing awareness of environmental protection, improving energy efficiency and reducing pollutant emissions have become important issues in global industrial development. Boilers, as key equipment for energy conversion, generate large amounts of high-temperature flue gas during operation. This flue gas contains abundant heat energy; if directly emitted into the atmosphere, it would not only result in a huge waste of energy but also exacerbate environmental pollution. Therefore, developing and applying efficient heat recovery devices to recover and utilize the heat energy in boiler flue gas has significant economic and environmental benefits.

[0003] Chinese Patent Publication No. CN210532421U discloses a heat recovery device for recovering boiler flue gas. The technical solution provided in this patent document is as follows: It includes a body, a boiler is located on one side of the body, a flue gas inlet is located inside the body, a flue gas waste heat recovery device is located above the flue gas inlet, the flue gas inlet is fixedly connected to the flue gas waste heat recovery device via a pipe, a filter screen is located inside the pipe, a water outlet pipe is located on the side of the flue gas waste heat recovery device away from the water inlet pipe, the end of the water outlet pipe away from the flue gas waste heat recovery device is connected to an insulated hot water tank, a heat insulation board is installed inside the insulated hot water tank, a switch chamber is located on the side of the body near the water outlet pipe, and a faucet is located on the side of the insulated hot water tank near the switch chamber.

[0004] To address the issue that boiler flue gas typically contains numerous impurities, and that the lack of filtration during flue gas recovery can easily lead to the accumulation of dirt at the inlet of the recovery unit, existing technology involves installing a filter screen inside the duct. This filter screen removes impurities from the flue gas, and the filter screen is replaced periodically by rotating the handle on the door panel. However, this method only purifies particulate matter in the flue gas and fails to remove smaller impurities, resulting in a generally poor purification effect. Utility Model Content

[0005] The purpose of this invention is to provide a flue gas heat recovery device for boilers to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A flue gas heat recovery device for a boiler includes a furnace body, with a support foot welded to the bottom of the furnace body, a filling port on the surface of the furnace body, and a flue gas outlet on one side of the furnace body.

[0008] A waste heat output mechanism is provided on one side of the flue gas outlet of the furnace body, and a water resource output mechanism is provided inside the waste heat output mechanism.

[0009] The waste heat output mechanism includes a flue gas conveying pipe, which is fixedly installed at the output end of the flue gas outlet. A mounting plate is installed in the middle of the flue gas conveying pipe, and hinge bolts are hinged to the surface of the mounting plate.

[0010] A further improvement of this utility model is that a door is movably installed on the surface of the filling port, and the filling port adds combustibles into the furnace body through the door.

[0011] A further improvement of this utility model is that a filter screen groove is fixedly installed inside the mounting plate, and both ends of the filter screen groove are fixedly connected to the flue gas conveying pipe. The filter screen groove is used to filter harmful particulate matter in the flue gas.

[0012] A further improvement of this utility model is that the surface of the flue gas conveying pipe on the right side of the filter screen groove penetrates the surface of the flue gas collection tower, and the flue gas conveying pipe conveys flue gas into the flue gas collection tower.

[0013] A further improvement of this utility model is that: a water tank is provided inside the flue gas collection tower, and a flue gas conveying pipe is fixedly connected to one side of the water tank input end. The water tank is used to store heated water, and the flue gas conveying pipe conveys flue gas into the water tank.

[0014] A further improvement of this utility model is that: quartz sand is placed at the bottom of the water tank, and a heat-absorbing plate is fixedly installed inside the water tank. The quartz sand is used to purify the water source contaminated with flue gas in the water tank, and the heat-absorbing plate is used to retain the heat in the flue gas.

[0015] A further improvement of this utility model is that: the top output end of the water tank is provided with a residual smoke exhaust port, which is used to discharge the residual smoke after heat removal.

[0016] A further improvement of the present invention is that the water resource output mechanism includes a water inlet pipe, which is fixedly connected to the input end on the other side of the water tank, and a water delivery pipe is fixedly connected to the output end on the other side of the water tank. The water inlet pipe is used to add water to the water tank.

[0017] A further improvement of this utility model is that: a faucet is fixedly connected to the output end of the water supply pipe, and a water valve is fixedly installed on the surface of the water supply pipe. The water supply pipe supplies water to the faucet, and the water valve is used to control the flow rate of the faucet.

[0018] A further improvement of this utility model is that a water bucket placement plate is welded to one side of the surface of the flue gas collection tower. The water bucket placement plate is aligned with the faucet and is used to place the water bucket to collect water.

[0019] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0020] 1. This utility model provides a flue gas heat recovery device for boilers. By setting a flue gas outlet and cooperating with a flue gas conveying pipe, the filter screen groove fixed by the mounting plate and hinge bolts filters harmful particulate matter in the flue gas. Then, in conjunction with a water tank and heat absorption plate, the heat in the flue gas is absorbed to heat the water in the water tank. At the same time, the water is further purified by the use of quartz sand, which improves the environmental friendliness of the equipment.

[0021] 2. This utility model provides a flue gas heat energy recovery device for boilers. By setting up a water inlet pipe and a water delivery pipe, it is convenient to add water to the water tank and output heated water. In addition, with the water bucket placement plate, it is convenient for staff to collect water, thus improving the convenience of the equipment. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present utility model;

[0023] Figure 2 This is a cross-sectional view of the installation disc of this utility model;

[0024] Figure 3 This is a cross-sectional structural schematic diagram of the flue gas collection tower of this utility model;

[0025] Figure 4 This is a cross-sectional structural diagram of the water tank of this utility model.

[0026] In the diagram: 1. Furnace body; 11. Support leg; 12. Packing inlet; 13. Smoke outlet; 2. Waste heat output mechanism; 21. Flue gas conveying pipe; 22. Mounting plate; 23. Hinge bolt; 24. Filter screen groove; 25. Flue gas collection tower; 26. Water tank; 27. Quartz sand; 28. Heat absorption plate; 29. ​​Waste smoke exhaust outlet; 3. Water resource output mechanism; 31. Water supply pipe; 32. Water conveying pipe; 33. Water valve; 34. Water tank placement plate. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to embodiments:

[0028] Example 1

[0029] like Figure 1-4As shown, this embodiment provides a flue gas heat recovery device for a boiler, including a furnace body 1. Support legs 11 are welded to the bottom of the furnace body 1. A filling port 12 is opened on the surface of the furnace body 1, and a flue gas outlet 13 is opened on one side of the furnace body 1. A waste heat output mechanism 2 is provided on one side of the flue gas outlet 13. A water resource output mechanism 3 is provided inside the waste heat output mechanism 2. The waste heat output mechanism 2 includes a flue gas conveying pipe 21, which is fixedly installed at the output end of the flue gas outlet 13. A mounting plate 22 is installed in the middle of the flue gas conveying pipe 21, and a hinge bolt 23 is hinged to the surface of the mounting plate 22. A door is movably installed on the surface of the filling port 12, through which combustibles are added to the furnace body 1. A filter screen groove 24 is fixedly installed inside the mounting plate 22, with both ends of the filter screen groove 24 fixedly connected to the flue gas conveying pipe 21. The filter screen groove 24 is used to filter harmful particulate matter in the flue gas. The surface of the flue gas conveying pipe 21 on the right side of the filter screen groove 24 penetrates the surface of the flue gas collection tower 25. Flue gas is conveyed into the flue gas collection tower 25 via the conveying pipe 21. A water tank 26 is installed inside the flue gas collection tower 25. The flue gas conveying pipe 21 is fixedly connected to one side of the water tank 26. The water tank 26 is used to store heated water. Flue gas is conveyed into the water tank 26 via the flue gas conveying pipe 21. Quartz sand 27 is placed at the bottom of the water tank 26. A heat absorption plate 28 is fixedly installed inside the water tank 26. The quartz sand 27 is used to purify the water contaminated with flue gas in the water tank 26, and the heat absorption plate 28 is used to retain the flue gas. The water tank 26 has a residual smoke exhaust port 29 at its top output end. The residual smoke exhaust port 29 is used to discharge the residual smoke after heat removal. By setting the smoke outlet 13 and cooperating with the flue gas conveying pipe 21, the smoke passes through the filter screen groove 24 fixed by the mounting plate 22 and hinge bolts 23 to filter harmful particulate matter in the flue gas. Then, the water tank 26 and the heat absorption plate 28 absorb the heat in the flue gas to heat the water in the water tank 26. At the same time, the water is further purified by the use of quartz sand, which improves the environmental friendliness of the equipment.

[0030] Example 2

[0031] like Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the water resource output mechanism 3 includes a water inlet pipe 31, which is fixedly connected to the input end of the water tank 26 on the other side. A water delivery pipe 32 is fixedly connected to the output end of the water tank 26 on the other side. The water inlet pipe 31 is used to add water to the water tank 26. A faucet is fixedly connected to the output end of the water delivery pipe 32. A water valve 33 is fixedly installed on the surface of the water delivery pipe 32. The water delivery pipe 32 delivers water to the faucet. The water valve 33 is used to control the flow rate of the faucet. A water bucket placement plate 34 is welded to one side of the surface of the flue gas collection tower 25. The water bucket placement plate 34 is aligned with the faucet and is used to place a water bucket to receive water. By setting the water inlet pipe 31 in conjunction with the water delivery pipe 32, it is convenient for the water tank 26 to add water and output heated water. In addition, with the water bucket placement plate 34, it is convenient for staff to receive water, thus improving the convenience of the equipment.

[0032] The working principle of this flue gas heat recovery device used in boilers will be explained in detail below.

[0033] like Figure 1-4 As shown, when using this equipment, the combustible material is first put into the furnace body 1 through the filling port 12. Through the flue gas outlet 13 and the flue gas conveying pipe 21, the flue gas passes through the filter screen groove 24 fixed by the mounting plate 22 and the hinge bolt 23 to filter the harmful particulate matter in the flue gas. Then, the water tank 26 and the heat absorption plate 28 absorb the heat in the flue gas to heat the water in the water tank 26. At the same time, the water is further purified by the quartz sand, which improves the environmental protection of the equipment. The water tank 26 is conveniently filled with water and the heated water is output through the water supply pipe 32 via the water filling pipe 31. The water bucket placement plate 34 makes it convenient for the staff to collect water, which improves the convenience of the equipment.

[0034] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A flue gas heat recovery device for a boiler, comprising a furnace body (1), characterized in that: The bottom of the furnace body (1) is welded with support legs (11), the surface of the furnace body (1) is provided with a filling port (12), and a smoke outlet (13) is provided on one side of the furnace body (1). A waste heat output mechanism (2) is provided on one side of the flue gas outlet (13) of the furnace body (1), and a water resource output mechanism (3) is provided inside the waste heat output mechanism (2). The waste heat output mechanism (2) includes a flue gas conveying pipe (21), which is fixedly installed at the output end of the flue gas outlet (13). A mounting plate (22) is installed in the middle of the flue gas conveying pipe (21), and a hinge bolt (23) is hinged to the surface of the mounting plate (22).

2. The flue gas heat recovery device for a boiler according to claim 1, characterized in that: A door is movably installed on the surface of the filling port (12).

3. The flue gas heat recovery device for a boiler according to claim 1, characterized in that: The installation plate (22) has a filter screen groove (24) fixedly installed inside, and both ends of the filter screen groove (24) are fixedly connected to the flue gas conveying pipe (21).

4. A flue gas heat recovery device for a boiler according to claim 3, characterized in that: The surface of the flue gas delivery pipe (21) on the right side of the filter screen groove (24) extends through the surface of the flue gas collection tower (25).

5. A flue gas heat recovery device for a boiler according to claim 4, characterized in that: The flue gas collection tower (25) is equipped with a water tank (26) inside, and a flue gas conveying pipe (21) is fixedly connected to one side of the water tank (26).

6. A flue gas heat recovery device for a boiler according to claim 5, characterized in that: Quartz sand (27) is placed at the bottom of the water tank (26), and a heat-absorbing plate (28) is fixedly installed inside the water tank (26).

7. A flue gas heat recovery device for a boiler according to claim 6, characterized in that: The top output end of the water tank (26) is provided with a residual smoke vent (29).

8. A flue gas heat recovery device for a boiler according to claim 7, characterized in that: The water resource output mechanism (3) includes a water supply pipe (31), which is fixedly connected to the input end of the water tank (26) on the other side, and a water supply pipe (32) is fixedly connected to the output end of the water tank (26) on the other side.

9. A flue gas heat recovery device for a boiler according to claim 8, characterized in that: A faucet is fixedly connected to the output end of the water supply pipe (32), and a water valve (33) is fixedly installed on the surface of the water supply pipe (32).

10. A flue gas heat recovery device for a boiler according to claim 9, characterized in that: A bucket placement plate (34) is welded to one side of the surface of the flue gas collection tower (25), and the bucket placement plate (34) is aligned with the faucet.

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