Boiler waste heat recoverer

Abstract

The utility model provides a boiler waste heat recoverer which is characterized in that the boiler waste heat recoverer comprises a waste heat recovery box and a flue gas treatment box, a connecting assembly is arranged on the surface of one end of the waste heat recovery box, one face of the connecting assembly is fixedly connected with a preliminary filter pipe, a heating assembly is arranged at one end of the preliminary filter pipe, and the other end of the preliminary filter pipe is connected with a flue gas treatment box. And a treatment pipe I is fixedly connected to the interior of the flue gas treatment box. Flue gas passes through a copper pipe and is conducted to tap water in a waste heat recycling box, the tap water is heated, then the flue gas passes through the copper pipe, passes through a transfer pipe and a first treatment pipe and enters cooling water in a flue gas treatment box, secondary cooling of the flue gas is achieved, and meanwhile dust particles of the flue gas are treated through the cooling water; and meanwhile, the cooled flue gas makes contact with ethyl alcohol through the second treatment pipe, harmful substances in the flue gas are treated, and finally the flue gas is exhausted through the exhaust pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of heating equipment, in particular to a boiler waste heat recovery device. Background Art

[0002] The flue gas waste heat recovery mainly converts the heat carried by the flue gas into available heat through a certain heat exchange method. The heat pipe waste heat recovery device is a special device for coal-fired, oil-fired, and gas-fired boilers. It is installed at the boiler flue outlet to recover the waste heat of the flue gas to heat domestic water or boiler make-up water. Its lower part is a flue, the upper part is a water tank, and there is a partition in the middle. There are safety valve, pressure gauge, and thermometer interfaces at the top, and the water tank has water inlet, outlet, and sewage discharge ports. When working, the flue gas flows through the flue of the heat pipe waste heat recovery device to wash the lower end of the heat pipe. After the heat pipe absorbs heat, it conducts the heat to the upper end, and the upper end of the heat pipe releases heat to heat the water.

[0003] However, after the existing boiler flue gas waste heat recovery device heats the hot water, the flue gas is discharged through simple filtration, and a large amount of harmful substances in the flue gas will thus affect the nearby environment. Content of the Utility Model

[0004] To solve the above problems, the utility model provides a boiler waste heat recovery device to solve the problems existing in the above prior art.

[0005] To achieve the above object, a boiler waste heat recovery device provided by the utility model is characterized in that it includes a waste heat recovery box and a flue gas treatment box. A connection component is provided on the surface of one end of the waste heat recovery box, and a preliminary filter pipe is fixedly connected to one side of the connection component.

[0006] One end of the preliminary filter pipe is provided with a heating component. A treatment pipe 1 is fixedly connected inside the flue gas treatment box. The other end of the waste heat recovery box is fixedly connected with a transfer pipe, and the other end of the transfer pipe passes through one side of the flue gas treatment box and is connected to the treatment pipe 1 in communication. A partition is fixedly connected to the inner wall of the flue gas treatment box.

[0007] An addition and discharge component is provided on the front of the waste heat recovery box.

[0008] Further, the addition and discharge component includes a water delivery pipe fixedly connected to the upper part of the front of the waste heat recovery box, a switch valve 1 provided on the horizontal section of the water delivery pipe, a drain pipe fixedly connected to the lower part of the front of the waste heat recovery box, and a switch valve 2 provided on the horizontal section of the drain pipe.

[0009] Further, a temperature sensor is fixedly connected to the inner wall of the flue gas treatment box, and the temperature sensor is used to detect the temperature of the cooling water.

[0010] Further, the connection component includes a flange and a plurality of connection bolts;

[0011] A plurality of threaded holes are formed in the surface of one end of the waste heat recovery box, and the connecting bolts are threadedly connected to the inner wall of the threaded holes. The connecting bolts are used to cooperate with the flange.

[0012] Furthermore, a steam discharge pipe is fixedly connected to the back surface of the waste heat recovery box, and a check valve is provided in the central section of the steam discharge pipe.

[0013] Furthermore, a plurality of filter nets are fixedly connected to the inner wall of the preliminary filter pipe, and the filter nets are made of heat-resistant glass fiber.

[0014] Furthermore, an opening is formed at the top end of the waste heat recovery box, threaded grooves are formed at the four corners of the top end of the waste heat recovery box, a sealing plate is provided on the inner wall of the opening, bolts matching the threaded grooves are provided at the reserved holes of the sealing plate, and sealing sheets are provided at the edges of the sealing plate.

[0015] Furthermore, the heating assembly includes a delivery pipe cooperating with the boiler and a copper pipe provided inside the waste heat recovery box;

[0016] One end of the delivery pipe is communicated with the preliminary filter pipe, and the other end of the copper pipe is communicated with the transfer pipe.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] First, the combination of this application is reasonable. The flue gas passes through the copper pipe to conduct the flue gas to the tap water inside the waste heat recovery box, so as to heat the tap water. Then, the flue gas passes through the copper pipe, through the transfer pipe and the first treatment pipe, and enters the cooling water inside the flue gas treatment box, so as to perform secondary cooling on the flue gas. At the same time, the dust particles in the flue gas are treated by the cooling water. At the same time, the cooled flue gas is brought into contact with ethanol through the second treatment pipe, so as to treat the harmful substances in the flue gas. Finally, it is discharged through the exhaust pipe.

[0019] Second, the structure of this application is reasonable. The sealing plate is fixed by bolts and threaded grooves. In addition, the staff regularly disassemble the bolts to separate the sealing plate from the waste heat recovery box, which is convenient for the staff to clean the scale on the inner wall of the waste heat recovery box.

[0020] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic three-dimensional structure of the present utility model Figure 1 ;

[0022] Figure 2 is a schematic three-dimensional structure of the present utility model Figure 2 ;

[0023] Figure 3 is a partial sectional structural view of the waste heat recovery box in the present utility model;

[0024] Figure 4 is a partial sectional structural view of the flue gas treatment box in the present utility model.

[0025] In the figure: 1. Waste heat recovery box; 2. Flue gas treatment box; 3. Sealing plate; 4. Bolt; 5. Delivery pipe; 6. Water delivery pipe; 7. Preliminary filter pipe; 8. Flange; 9. First switch valve; 10. Drain pipe; 11. Second switch valve; 12. Exhaust pipe; 13. Transfer pipe; 14. Copper pipe; 15. First treatment pipe; 16. Second treatment pipe; 17. Partition board; 18. Cooling water; 19. Ethanol; 20. Temperature sensor; 21. Steam discharge pipe. Specific embodiments

[0026] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific embodiments of the present utility model will now be described with reference to the accompanying drawings. However, the protection scope of the present utility model is not limited to the following description.

[0027] Referring to Figures 1-4 as shown, a boiler waste heat recovery device, characterized in that it includes: a waste heat recovery box 1 and a flue gas treatment box 2. A connection assembly is provided on the surface of one end of the waste heat recovery box 1, and a preliminary filter pipe 7 is fixedly connected to one side of the connection assembly;

[0028] A heating assembly is provided at one end of the preliminary filter pipe 7. A first treatment pipe 15 is fixedly connected inside the flue gas treatment box 2. A transfer pipe 13 is fixedly connected to the other end of the waste heat recovery box 1. The other end of the transfer pipe 13 passes through one side of the flue gas treatment box 2 and is connected to the first treatment pipe 15 in communication. A partition board 17 is fixedly connected to the inner wall of the flue gas treatment box 2. The heating assembly includes a delivery pipe 5 adapted to the boiler and a copper pipe 14 provided inside the waste heat recovery box 1;

[0029] One end of the delivery pipe 5 is connected to the preliminary filter pipe 7 in communication, and the other end of the copper pipe 14 is connected to the transfer pipe 13 in communication;

[0030] A second treatment pipe 16 is fixedly connected to the inner wall of the partition board 17. An exhaust pipe 12 is fixedly connected to one end of the flue gas treatment box 2. Cooling water 18 is provided on one side of the partition board 17, and ethanol 19 is provided on the other side of the partition board 17;

[0031] An addition and discharge assembly is provided on the front surface of the waste heat recovery box 1.

[0032] During use, tap water is added to the inside of the waste heat recovery tank 1 through the addition and discharge assembly. Then, the smoke exhaust pipe of the boiler is connected to the conveying pipe 5. Through the smoke exhaust pipe of the boiler, the flue gas enters the copper pipe 14 through the conveying pipe 5 and the preliminary filter pipe 7, and the flue gas is conducted to the tap water inside the waste heat recovery tank 1 through the copper pipe 14 to heat the tap water. Then, the flue gas passes through the copper pipe 14, through the transfer pipe 13 and the first treatment pipe 15, and enters the cooling water 18 inside the flue gas treatment tank 2 to cool the flue gas for the second time. At the same time, the dust particles of the flue gas are treated by the cooling water 18. At the same time, the cooled flue gas is brought into contact with ethanol 19 through the second treatment pipe 16 to treat the harmful substances in the flue gas. Finally, it is discharged through the exhaust pipe 12.

[0033] Preferably, the addition and discharge assembly includes a water delivery pipe 6 fixedly connected to the upper part of the front surface of the waste heat recovery tank 1, a first switch valve 9 provided on the horizontal section of the water delivery pipe 6, a drain pipe 10 fixedly connected to the lower part of the front surface of the waste heat recovery tank 1, and a second switch valve 11 provided on the horizontal section of the drain pipe 10.

[0034] Specifically, the water delivery pipe 6 is connected to an external tap water pipe. By opening the first switch valve 9, the tap water inside the tap water pipe is input into the waste heat recovery tank 1. After the tap water inside the waste heat recovery tank 1 is heated, by opening the second switch valve 11, the tap water inside the waste heat recovery tank 1 is discharged through the drain pipe 10.

[0035] Preferably, a temperature sensor 20 is fixedly connected to the inner wall of the flue gas treatment tank 2. The temperature sensor 20 is used to detect the temperature of the cooling water 18. Another two addition ports are opened at the top end of the flue gas treatment tank 2. The inner wall of the addition port is threadedly connected with a first sealing plug. Discharge ports are opened on the surfaces at both ends of the flue gas treatment tank 2. The inner wall of the discharge port is threadedly connected with a second sealing plug.

[0036] Specifically, the temperature of the cooling water 18 is detected by the temperature sensor 20. When the cooling water 18 reaches the preset temperature, by opening the second sealing plug on the side close to the cooling water 18, the cooling water 18 is discharged through the discharge port. After the discharge is completed, the discharge port is sealed by the second sealing plug, and the cooling water 18 is added through the addition port.

[0037] Preferably, the connection assembly includes a flange 8 and a plurality of connection bolts;

[0038] A plurality of threaded holes are opened on the surface of one end of the waste heat recovery tank 1. The connection bolts are threadedly connected to the inner wall of the threaded holes. The connection bolts are used to cooperate with the flange 8. A plurality of filter meshes are fixedly connected to the inner wall of the preliminary filter pipe 7. The filter mesh is made of heat-resistant glass fiber.

[0039] Specifically, the flange 8 is fixed by connecting bolts threaded into the threaded holes, achieving the fixation of the flange 8, and the dust particles in the flue gas are preliminarily filtered by the filter screen in the preliminary filter pipe 7.

[0040] Preferably: A steam discharge pipe 21 is fixedly connected to the back of the waste heat recovery box 1, and a one-way valve is provided in the central section of the steam discharge pipe 21.

[0041] Specifically, the water vapor generated by heating tap water is discharged through the steam discharge pipe 21.

[0042] Preferably: An opening is provided at the top of the waste heat recovery box 1, threaded grooves are provided at the four corners of the top of the waste heat recovery box 1, a sealing plate 3 is provided on the inner wall of the opening, bolts 4 matching the threaded grooves are provided at the reserved holes of the sealing plate 3, and sealing sheets are provided at the edges of the sealing plate 3.

[0043] Specifically, the bolts 4 pass through the reserved holes on the surface of the sealing plate 3 and are connected to the threaded grooves, achieving the fixation of the sealing plate 3. The staff regularly disassemble the bolts 4 to separate the sealing plate 3 from the waste heat recovery box 1, facilitating the staff to clean the scale on the inner wall of the waste heat recovery box 1.

[0044] The above-disclosed are only the preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A boiler waste heat recovery device, characterized in that: include: A waste heat recovery box (1) and a flue gas treatment box (2), wherein a connection component is provided on the surface of one end of the waste heat recovery box (1), and a preliminary filter tube (7) is fixedly connected to one side of the connection component; A heating assembly is provided at one end of the preliminary filtering tube (7); a treatment tube (15) is fixedly connected to the interior of the flue gas treatment box (2); a transfer tube (13) is fixedly connected to the other end of the waste heat recovery box (1); the other end of the transfer tube (13) passes through one side of the flue gas treatment box (2) and is connected to the treatment tube (15); a partition (17) is fixedly connected to the inner wall of the flue gas treatment box (2); The inner wall of the partition (17) is fixedly connected to a second treatment pipe (16), one end of the flue gas treatment box (2) is fixedly connected to an exhaust pipe (12), one side of the partition (17) is provided with cooling water (18), and the other side of the partition (17) is provided with ethanol (19); The front side of the waste heat recovery box (1) is provided with an additional discharge component.

2. A boiler waste heat recovery device according to claim 1, characterized in that: The additional discharge assembly comprises a water pipe (6) fixedly connected to the upper front part of the waste heat recovery box (1), a switch valve (9) arranged in the horizontal section of the water pipe (6), a drainage pipe (10) fixedly connected to the lower front part of the waste heat recovery box (1), and a switch valve (11) arranged in the horizontal section of the drainage pipe (10).

3. The boiler waste heat recovery device according to claim 1, characterized in that: A temperature sensor (20) is fixedly connected to the inner wall of the flue gas treatment box (2), and the temperature sensor (20) is used to detect the temperature of the cooling water (18).

4. The boiler waste heat recovery device according to claim 1, characterized in that: The connecting assembly comprises a flange (8) and a plurality of connecting bolts; A plurality of threaded holes are provided on the surface of one end of the waste heat recovery box (1), and the connecting bolts are threadedly connected to the inner walls of the threaded holes, and the connecting bolts are used to match the flange (8).

5. The boiler waste heat recovery device according to claim 1, characterized in that: The back of the waste heat recovery box (1) is fixedly connected to a steam exhaust pipe (21), and a one-way valve is provided in the central section of the steam exhaust pipe (21).

6. The boiler waste heat recovery device according to claim 1, characterized in that: The inner wall of the preliminary filtering tube (7) is fixedly connected with a plurality of filtering screens, and the material of the filtering screens is composed of high temperature resistant glass fibers.

7. The boiler waste heat recovery device according to claim 1, characterized in that: The top of the waste heat recovery box (1) is provided with an opening, and the four corners of the top of the waste heat recovery box (1) are provided with threaded grooves. The inner wall of the opening is provided with a sealing plate (3), and the reserved hole of the sealing plate (3) is provided with a bolt (4) matching the threaded groove, and the edge of the sealing plate (3) is provided with a sealing sheet.

8. The boiler waste heat recovery device according to claim 1, characterized in that: The heating assembly comprises a delivery pipe (5) matched with the boiler and a copper pipe (14) arranged inside the waste heat recovery box (1); One end of the delivery pipe (5) is connected to the preliminary filtering pipe (7), and the other end of the copper pipe (14) is connected to the transfer pipe (13).

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