Boiler drainage heat recovery device

Abstract

The utility model relates to the technical field of boiler drainage, in particular to a boiler drainage heat recovery device which comprises a box body, one side of the box body is fixedly connected with a bent pipe, one side of the box body is fixedly connected with an exhaust pipe, one side of the exhaust pipe is fixedly connected with an inclined grid plate, one side of the exhaust pipe is fixedly connected with a conical block, and the conical block is fixedly connected with an inclined grid plate. One side of the box body is fixedly connected with a water inlet pipe, one side of the box body is fixedly connected with an electromagnetic valve, and one side of the box body is fixedly connected with a water outlet pipe. The device has the advantages that cold water is heated by utilizing heat of sewage discharged by drain water of a boiler, the heated water is used as boiler feed water, the sewage is cooled by utilizing the cold water, energy conservation and environmental protection are realized through bidirectional utilization, and the sewage is injected into the filter by the recovery pipe through the arrangement of the filter component; the water body is filtered through the filter cartridge and the activated carbon filter layer, so that the effect of adsorbing and filtering impurities doped in the water body is achieved, and the influence of impurity accumulation on equipment operation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of boiler drainage technology, and in particular to a boiler drainage heat recovery device. Background Technology

[0002] Existing boiler blowdown expansion tanks are used to collect steam and water media such as periodic blowdowns, continuous blowdowns, and steam-water system condensate. The main function of the periodic blowdown expansion tank is to expand and depressurize the media discharged from the boiler. The periodic blowdown wastewater undergoes secondary boiling at a lower pressure, producing some secondary steam, while simultaneously cooling the wastewater. The secondary steam and wastewater are separated within the periodic blowdown expansion tank. The separated steam is discharged through the upper vent pipe, while the wastewater is discharged into a ditch or wastewater well through the lower drain outlet. The wastewater discharged during boiler condensation is not unusable water, but boiler water containing a large amount of boiler scale and sludge. Furthermore, the boiler water contains a large amount of heat energy, which can be recovered and reused.

[0003] To address this issue, this utility model proposes a boiler drain heat recovery device. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a boiler condensate heat recovery device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a boiler drain heat recovery device, comprising a housing, a bent pipe fixedly connected to one side of the housing, an exhaust pipe fixedly connected to one side of the housing, an inclined grid plate fixedly connected to one side of the exhaust pipe, a conical block fixedly connected to one side of the exhaust pipe, a water inlet pipe fixedly connected to one side of the housing, a solenoid valve fixedly connected to one side of the housing, a water outlet pipe fixedly connected to one side of the housing, a filter provided on one side of the housing, a top cover threadedly connected to one side of the filter, a recovery pipe fixedly connected to one side of the top cover, a filter cartridge threadedly connected to one side of the top cover, an activated carbon filter layer fixedly connected to one side of the filter, and a drain pipe fixedly connected to one side of the filter.

[0007] Preferably, one of the above solutions is that two first through holes are provided on one side of the box body, the inner surface of the first through hole is adapted to the outer surface of the bent pipe, and one side of the bent pipe is fixedly connected to the inside of the first through hole.

[0008] The technical effect achieved by adopting the above solution is that by using the "S"-shaped distribution of the bends in the tank, the flow time of cold water in the tank is increased.

[0009] Preferably, one side of the housing has a second through hole, the inner surface of the second through hole is adapted to the outer surface of one side of the exhaust pipe, and one side of the exhaust pipe is fixedly connected to the inside of the second through hole.

[0010] Preferably, in any of the above embodiments, the outer diameter of the inclined grille is adapted to the inner diameter of the exhaust pipe, and the inclined grille is fixedly connected to the inner side of the exhaust pipe.

[0011] The technical effect achieved by the above scheme is that the liquid-liquid separation of steam is realized through the action of the inclined grid plate and the conical block.

[0012] Preferably, one side of the top cover has a third through hole, the inner surface of the third through hole is adapted to the outer surface of the recycling tube, and one side of the recycling tube is fixedly connected to the inside of the third through hole.

[0013] Preferably, one side of the top cover has a first groove, the inner surface of the first groove is adapted to the outer surface of the filter cartridge, and one side of the filter cartridge is threaded into the first groove.

[0014] The technical effect achieved by adopting the above scheme is: to filter sewage by utilizing the filter cartridge and activated carbon filter layer inside the filter.

[0015] Preferably, one side of the filter has a fourth through hole, the inner surface of the fourth through hole is adapted to the outer surface of one side of the drain pipe, and one side of the drain pipe is fixedly connected to the inside of the fourth through hole.

[0016] Preferably, one side of the box body has a sixth through hole, the inner surface of the sixth through hole is adapted to the outer surface of the water outlet pipe, and one side of the water outlet pipe is fixedly connected to the inside of the sixth through hole.

[0017] The technical effect achieved by adopting the above solution is that the drain pipe on the filter is connected to the inlet pipe on the tank, so that the filtered sewage can flow into the tank.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] The system utilizes the heat from the wastewater discharged from the boiler to heat cold water, which is then used as boiler feedwater. Simultaneously, the cold water is used to cool the wastewater, achieving a two-way utilization that is energy-saving and environmentally friendly. Through the installation of filtration components, water is injected into the filter through a recovery pipe, and the water is filtered through the filter cartridge and activated carbon filter layer, thereby achieving the effect of adsorbing and filtering impurities in the water and preventing impurities from accumulating and affecting the operation of the equipment.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the overall structure according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the box according to an embodiment of the present utility model;

[0024] Figure 3 This is a cross-sectional schematic diagram of the exhaust pipe structure according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the filter according to an embodiment of the present utility model;

[0026] Figure 5 This is an enlarged schematic diagram of a partial structure A according to an embodiment of the present invention.

[0027] In the diagram: 1-box body, 2-bend, 3-exhaust pipe, 4-slanted grid plate, 5-conical block, 6-inlet pipe, 7-solenoid valve, 8-outlet pipe, 9-filter, 10-top cover, 11-recovery pipe, 12-filter cartridge, 13-activated carbon filter layer, 14-drain pipe. Detailed Implementation

[0028] like Figures 1 to 5As shown, a boiler drain heat recovery device includes a housing 1. A bent pipe 2 is fixedly connected to one side of the housing 1. An exhaust pipe 3 is fixedly connected to one side of the housing 1. An inclined grid plate 4 is fixedly connected to one side of the exhaust pipe 3. A conical block 5 is fixedly connected to one side of the exhaust pipe 3. The outer diameter of the largest end of the conical block 5 is smaller than the inner diameter of the exhaust pipe 3. The conical block 5 is fixedly connected to the top of the inner side of the exhaust pipe 3. A water inlet pipe 6 is fixedly connected to one side of the housing 1. A solenoid valve 7 is fixedly connected to one side of the housing 1. A controller is provided on the outside of the device and electrically connected to the solenoid valve 7, allowing for external remote control of the opening and closing of the solenoid valve 7. An outlet pipe is fixedly connected to one side of the housing 1. 8. A filter 9 is provided on one side of the housing 1. The bottom of the filter 9 has a threaded hole, which can be fixed by bolts. A top cover 10 is threaded to one side of the filter 9. A recovery pipe 11 is fixedly connected to one side of the top cover 10. A filter cartridge 12 is threaded to one side of the top cover 10. The outer diameter of the recovery pipe 11 is smaller than the inner diameter of the filter cartridge 12. The outlet of the recovery pipe 11 is located inside the filter cartridge 12. An activated carbon filter layer 13 is fixedly connected to one side of the filter cartridge 12. A drain pipe 14 is fixedly connected to one side of the filter 9. A connecting flange is provided on one side of both the drain pipe 14 and the inlet pipe 6. The drain pipe 14 is connected to the inlet pipe 6.

[0029] Two first through holes are opened on one side of the housing 1. The inner surface of the first through hole is adapted to the outer surface of the bend 2. One side of the bend 2 is fixedly connected to the inside of the first through hole. First, the filter 9 is fixed by bolts, and then the discharge pipe 14 on the filter 9 is connected to the water inlet pipe 6.

[0030] A second through hole is provided on one side of the housing 1. The inner surface of the second through hole is adapted to the outer surface of one side of the exhaust pipe 3. One side of the exhaust pipe 3 is fixedly connected to the inside of the second through hole. By discharging sewage into the recovery pipe 11, the sewage flows into the filter 9. Through the action of the filter cartridge 12 and the activated carbon filter layer 13, the impurities mixed in the water are adsorbed and filtered.

[0031] The outer diameter of the inclined grid plate 4 is matched with the inner diameter of the exhaust pipe 3. The inclined grid plate 4 is fixedly connected to the inner side of the exhaust pipe 3. The filtered water flows into the box 1 through the discharge pipe 14 and the inlet pipe 6. The heat contained in the sewage is used to heat the cold water flowing through the bend pipe 2. The heated water is used as boiler feedwater.

[0032] A third through hole is provided on one side of the top cover 10. The inner surface of the third through hole is adapted to the outer surface of the recycling pipe 11. One side of the recycling pipe 11 is fixedly connected to the inside of the third through hole. At the same time, the cold water flowing through the bend pipe 2 is used to cool the sewage. This bidirectional utilization is energy-saving and environmentally friendly.

[0033] A first groove is provided on one side of the top cover 10. The inner surface of the first groove is adapted to the outer surface of the filter cartridge 12. One side of the filter cartridge 12 is threaded into the first groove. When the steam and liquid droplets generated by the sewage in the tank 1 are discharged through the exhaust pipe 3, the steam rises and hits the inclined grid plate 4, which reduces the gas velocity and performs the first liquid droplet separation.

[0034] A fourth through hole is provided on one side of the filter 9. The inner surface of the fourth through hole is adapted to the outer surface of one side of the drain pipe 14. One side of the drain pipe 14 is fixedly connected to the inside of the fourth through hole. Then, the steam impacts the conical block 5, and the steam overflows from the side of the conical block 5. The small water droplets in the steam gather on the conical block 5 and finally drip down, which is the second liquid-liquid separation to ensure the quality of the steam.

[0035] A sixth through hole is provided on one side of the housing 1. The inner surface of the sixth through hole is adapted to the outer surface of one side of the water outlet pipe 8. One side of the water outlet pipe 8 is fixedly connected to the inside of the sixth through hole.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] The heat from the wastewater discharged from the boiler is used to heat cold water, which is then used as boiler feedwater. At the same time, the cold water is used to cool the wastewater, making it a two-way energy-saving and environmentally friendly system. Through the filter components, water is injected into the filter 9 through the recovery pipe 11, and the water is filtered through the filter cartridge 12 and the activated carbon filter layer 13. This achieves the effect of adsorbing and filtering impurities in the water, preventing impurities from accumulating and affecting the operation of the equipment.

Claims

1. A boiler condensate heat recovery device, characterized in that: The enclosure includes a housing (1), a bent pipe (2) fixedly connected to one side of the housing (1), an exhaust pipe (3) fixedly connected to one side of the housing (1), a slanted grid plate (4) fixedly connected to one side of the exhaust pipe (3), a conical block (5) fixedly connected to one side of the exhaust pipe (3), a water inlet pipe (6) fixedly connected to one side of the housing (1), a solenoid valve (7) fixedly connected to one side of the housing (1), a water outlet pipe (8) fixedly connected to one side of the housing (1), a filter (9) provided on one side of the housing (1), a top cover (10) threadedly connected to one side of the filter (9), a recovery pipe (11) fixedly connected to one side of the top cover (10), a filter cartridge (12) threadedly connected to one side of the top cover (10), an activated carbon filter layer (13) fixedly connected to one side of the filter cartridge (12), and a drain pipe (14) fixedly connected to one side of the filter (9).

2. The boiler drain heat recovery device according to claim 1, characterized in that: Two first through holes are provided on one side of the box (1). The inner surface of the first through hole is adapted to the outer surface of the bent pipe (2). One side of the bent pipe (2) is fixedly connected to the inside of the first through hole.

3. The boiler drain heat recovery device according to claim 2, characterized in that: A second through hole is provided on one side of the housing (1), and the inner surface of the second through hole is adapted to the outer surface of one side of the exhaust pipe (3). One side of the exhaust pipe (3) is fixedly connected to the inside of the second through hole.

4. A boiler drain heat recovery device according to claim 3, characterized in that: The outer diameter of the inclined grille (4) is adapted to the inner diameter of the exhaust pipe (3), and the inclined grille (4) is fixedly connected to the inner side of the exhaust pipe (3).

5. A boiler drain heat recovery device according to claim 4, characterized in that: A third through hole is provided on one side of the top cover (10), the inner surface of the third through hole is adapted to the outer surface of the recycling tube (11), and one side of the recycling tube (11) is fixedly connected to the inside of the third through hole.

6. A boiler drain heat recovery device according to claim 5, characterized in that: The top cover (10) has a first groove on one side, the inner surface of the first groove is adapted to the outer surface of the filter cartridge (12), and one side of the filter cartridge (12) is threaded into the first groove.

7. A boiler drain heat recovery device according to claim 6, characterized in that: The filter (9) has a fourth through hole on one side. The inner surface of the fourth through hole is adapted to the outer surface of the drain pipe (14) on one side. The drain pipe (14) is fixedly connected to the inside of the fourth through hole on one side.

8. A boiler drain heat recovery device according to claim 7, characterized in that: A sixth through hole is provided on one side of the box (1). The inner surface of the sixth through hole is adapted to the outer surface of one side of the water outlet pipe (8). One side of the water outlet pipe (8) is fixedly connected to the inside of the sixth through hole.

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