Boiler waste heat recovery device

Abstract

The utility model relates to the field of boilers, and discloses a boiler waste heat recovery device which comprises a bottom plate, a waste heat recovery mechanism is arranged on one side of the upper surface of the bottom plate and comprises a water storage tank fixedly connected to the upper surface of the bottom plate, and a heating box is fixedly connected to one side of the inner bottom face of the water storage tank. A plurality of heat conduction plates are fixedly connected to the inner bottom face of the heating box in a staggered mode, a water outlet pipe is fixedly connected to the outer wall of one side of the water storage tank, a water pump is fixedly connected to the end, away from the water storage tank, of the water outlet pipe, and a boiler mechanism is arranged on one side of the bottom plate. Heat in smoke is conducted to the heat conducting plate, so that the heat conducting plate transmits the heat to the water storage tank, the heat conducting plate heats water in the water storage tank, then the water pump conveys the heated water into the heat preservation bin, and therefore the heat preservation bin plays a role in preserving heat for media in the boiler shell.

Description

Technical Field

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

[0002] The flue gas generated during boiler operation produces a large amount of waste heat. If this waste heat is not utilized, it will be lost into the environment in the form of cooling water and flue gas, causing environmental damage and wasting resources. In order to improve resource utilization and reduce environmental pollution, waste heat recovery devices are usually installed at the location of boiler flue gas emissions. Through these devices, the waste heat can be converted back into usable resources, thereby reducing fuel costs, saving costs, and reducing greenhouse gas emissions. This helps enterprises achieve their energy conservation and emission reduction goals. Therefore, a boiler waste heat recovery device is proposed.

[0003] Most existing boiler waste heat recovery devices cannot effectively recover and utilize the waste heat contained in the flue gas, resulting in the waste of some of the heat contained in the flue gas. Furthermore, during the emission process, the flue gas contains some solid particles. If these solid particles are not effectively filtered out, they may cause environmental pollution when the flue gas is discharged. Therefore, there is an urgent need for technological improvements. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a boiler waste heat recovery device. A purification mechanism is provided on the side of the upper surface of the base plate away from the waste heat recovery mechanism. The purification mechanism includes a purification chamber fixedly connected to the other side of the upper surface of the base plate. A drain pipe is fixedly connected to the lower surface of the purification chamber. A flue pipe is fixedly connected to the outer wall of the purification chamber on the side closer to the waste heat recovery mechanism. A secondary filter screen is provided at the upper end of the inner wall of the purification chamber, and an activated carbon filter element is provided at the upper end of the secondary filter screen.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A boiler waste heat recovery device includes a base plate, a waste heat recovery mechanism is provided on one side of the upper surface of the base plate, the waste heat recovery mechanism includes a water storage tank fixedly connected to the upper surface of the base plate, a heating box is fixedly connected to one side of the bottom surface of the water storage tank, a plurality of heat conducting plates are fixedly connected to the bottom surface of the heating box in an alternating manner, a water outlet pipe is fixedly connected to one side of the outer wall of the water storage tank, a water pump is fixedly connected to the end of the water outlet pipe away from the water storage tank, and a boiler mechanism is provided on one side of the base plate.

[0007] Compared with existing boiler waste heat recovery devices, this boiler waste heat recovery device, through the above technical solution, sets up a waste heat recovery mechanism, which conducts heat from the flue gas to a heat-conducting plate, thereby transferring the heat to the water storage tank. This heats the water inside the tank, and the water pump then delivers the heated water to the interior of the insulation chamber, thus allowing the insulation chamber to insulate the medium inside the boiler shell.

[0008] Furthermore, the boiler mechanism includes a boiler shell disposed on one side of the base plate, and an insulation chamber is provided inside the boiler shell;

[0009] The above technical solution, by creating an insulation chamber in the boiler mechanism, allows the boiler to retain its internal temperature for a longer period of time, preventing it from easily dissipating.

[0010] Furthermore, support feet are fixedly connected to the four corners of the lower surface of the base plate;

[0011] The above technical solution, with the support feet set at the four corners of the bottom of the base plate, makes the waste heat recovery device less prone to corrosion and more durable.

[0012] Furthermore, a flue gas inlet pipe is fixedly connected to the outer wall of the boiler shell on the side closest to the waste heat recovery mechanism, and the end of the flue gas inlet pipe away from the boiler shell is connected in a through connection to the heating box.

[0013] The above technical solution allows the flue gas discharged from the boiler to enter the waste heat recovery mechanism.

[0014] Furthermore, the smoke inlet pipe is equipped with a one-way valve.

[0015] With the above technical solution, by setting up a one-way valve, the discharged flue gas will not flow back into the boiler.

[0016] Furthermore, the other end of the exhaust pipe is connected through to the heating box;

[0017] With the above technical solution, the flue gas in the heating box can enter the cleanroom mechanism by connecting the exhaust pipe to the heating box.

[0018] Furthermore, the other end of the water outlet pipe is connected through to the insulation chamber, and the rear end of the boiler mechanism is provided with a water inlet pipe, the two ends of which are respectively connected through to the interior of the insulation chamber and the water storage tank.

[0019] Through the above technical solution, hot water in the water storage tank can enter the insulation chamber of the boiler mechanism through the water inlet pipe.

[0020] Furthermore, an inlet is provided on one side of the upper surface of the water storage tank, and an outlet is provided at the lower end of the front outer wall of the water storage tank.

[0021] The above technical solution allows for water replenishment by providing an inlet to the water storage tank. When there is too much water in the tank, the outlet at the bottom of the front outer wall of the tank can be used to drain the water.

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

[0023] 1. The present invention proposes a boiler waste heat recovery device. Compared with existing boiler waste heat recovery devices, this boiler waste heat recovery device is equipped with a waste heat recovery mechanism. The heat in the flue gas is conducted to the heat conduction plate, which then transfers the heat to the water storage tank. The heat conduction plate heats the water inside the water storage tank, and then the water pump delivers the heated water to the interior of the insulation chamber, thereby the insulation chamber insulates the medium inside the boiler shell.

[0024] 2. The boiler waste heat recovery device proposed in this utility model, compared with the existing boiler waste heat recovery mechanism, is equipped with a purification mechanism. When the flue gas flows into the purification mechanism, the impurities in the flue gas are mixed with the water in the purification chamber, thereby increasing the volume and weight of the solid particles, so that the fixed particles exist inside the purification chamber. Then the smoke drifts out from the top of the purification chamber, and is filtered again by a secondary filter screen. Then the odor contained in the smoke is adsorbed by an activated carbon filter element, which can effectively treat the fixed particles and odors contained in the smoke, and effectively reduce environmental pollution. Attached Figure Description

[0025] Figure 1 This is an isometric view of a boiler waste heat recovery device proposed in this utility model;

[0026] Figure 2 This is a front view of a boiler waste heat recovery device proposed in this utility model;

[0027] Figure 3 This is a cross-sectional view of a boiler waste heat recovery device proposed in this utility model;

[0028] Figure 4 This is a top sectional view of a boiler waste heat recovery device proposed in this utility model;

[0029] Figure 5 This is a side sectional view of the boiler shell in a boiler waste heat recovery device proposed in this utility model.

[0030] Legend:

[0031] 1. Boiler structure; 101. Boiler shell; 102. Insulation chamber; 2. Water pump; 3. Water outlet pipe; 4. Base plate; 5. Support legs; 6. Water outlet; 7. Purification mechanism; 701. Purification chamber; 702. Sewage pipe; 703. Flue gas pipe; 704. Secondary filter screen; 705. Activated carbon filter element; 8. Waste heat recovery mechanism; 801. Heating box; 802. Heat conduction plate; 803. Water storage tank; 9. Water inlet; 10. Water inlet pipe; 11. One-way valve; 12. Flue gas inlet pipe. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1-5 One embodiment provided by this utility model:

[0034] A boiler waste heat recovery device includes a base plate 4, a waste heat recovery mechanism 8 is provided on one side of the upper surface of the base plate 4, the waste heat recovery mechanism 8 includes a water storage tank 803 fixedly connected to the upper surface of the base plate 4, a heating box 801 fixedly connected to one side of the bottom surface of the water storage tank 803, a plurality of heat conducting plates 802 fixedly connected to the bottom surface of the heating box 801 in an alternating manner, a water outlet pipe 3 fixedly connected to one side of the outer wall of the water storage tank 803, a water pump 2 fixedly connected to one end of the water outlet pipe 3 away from the water storage tank 803, and a boiler mechanism 1 is provided on one side of the base plate 4.

[0035] A purification mechanism 7 is provided on the side of the upper surface of the base plate 4 away from the waste heat recovery mechanism 8. The purification mechanism 7 includes a purification chamber 701 fixedly connected to the other side of the upper surface of the base plate 4. A drain pipe 702 is fixedly connected to the lower surface of the purification chamber 701. A smoke exhaust pipe 703 is fixedly connected to the outer wall of the purification chamber 701 near the waste heat recovery mechanism 8. A secondary filter screen 704 is provided at the upper end of the inner wall of the purification chamber 701. An activated carbon filter element 705 is provided at the upper end of the secondary filter screen 704.

[0036] The boiler mechanism 1 includes a boiler shell 101 disposed on one side of the base plate 4. An insulation chamber 102 is provided inside the boiler shell 101. This insulation chamber 102 helps the boiler maintain its internal temperature for a longer period, preventing heat loss. Support feet 5 are fixedly connected to the four corners of the lower surface of the base plate 4. These support feet 5 help prevent corrosion of the waste heat recovery device, making it more durable. A flue gas inlet pipe 12 is fixedly connected to the outer wall of the boiler shell 101 near the waste heat recovery mechanism 8. The end of the flue gas inlet pipe 12 away from the boiler shell 101 is connected to the heating box 801, allowing the flue gas discharged from the boiler to enter the waste heat recovery mechanism 8. A one-way valve 11 is installed in the flue gas inlet pipe 12 to prevent the discharged flue gas from entering the boiler. The flue gas in the boiler is recirculated inside the furnace. The other end of the flue pipe 703 is connected to the heating box 801. The flue gas in the heating box 801 can enter the purification mechanism 7 through the flue pipe 703. The other end of the water outlet pipe 3 is connected to the insulation chamber 102. The rear end of the boiler mechanism 1 is provided with a water inlet pipe 10. The two ends of the water inlet pipe 10 are respectively connected to the interior of the insulation chamber 102 and the water storage tank 803. Through the water inlet pipe 10, the hot water in the water storage tank 803 can enter the insulation chamber 102 of the boiler mechanism 1. A water inlet 9 is provided on one side of the upper surface of the water storage tank 803. A water outlet 6 is provided at the lower end of the front outer wall of the water storage tank 803. Water can be added to the water storage tank 803 by providing a water inlet 9. When there is too much water in the water storage tank 803, the water outlet 6 at the bottom of the front outer wall of the water storage tank 803 can be used to drain the water.

[0037] Working principle: The waste heat recovery device is fixedly connected to one side of the outer wall of the boiler shell 101 of the boiler mechanism 1. Flue gas enters the heating box 801 inside the waste heat recovery mechanism 8 through the flue gas inlet pipe 12. The flue gas inlet pipe 12 is equipped with a one-way valve 11 to prevent flue gas backflow. After the flue gas enters the heating box 801, the heat conduction plate 802 absorbs the waste heat of the flue gas, and then the heat conduction plate 802 transfers the heat to the water in the water storage tank 803, causing the water to absorb heat and thus turn the water into heat. The water is heated to hot water, which is then pumped by a water pump 2 and transported through an outlet pipe 3 to the interior of the insulation chamber 102. The hot water then forces out the cold water in the insulation chamber 102 and is transported through an inlet pipe 10 to the water storage tank 803. This allows the insulation chamber 102 to insulate the medium inside the boiler shell 101. The upper surface of the water storage tank 803 is also equipped with a water inlet 9 for replenishing water to the tank, and the bottom of the front outer wall of the water storage tank 803 is also equipped with a water outlet 6. The system is used to fill the water storage tank 803. After the flue gas in the heating box 801 is absorbed, it enters the purification chamber 701 through the exhaust pipe 703 connected to one side of the outer wall of the heating box 801. The flue gas enters the purification chamber 701 of the purification mechanism 7. The impurities in the flue gas mix with the water in the purification chamber 701, thereby increasing the volume and weight of the solid particles, so that the fixed particles exist inside the purification chamber 701. The flue gas is discharged from the purification chamber 701 through the drain pipe 702. Then the flue gas floats out from the top of the purification chamber 701. When it floats out, it is filtered again through the secondary filter screen 704. Then it is adsorbed by the activated carbon filter element 705 to remove the odor contained in the flue gas. This can effectively treat the fixed particles and odor contained in the flue gas, effectively reducing environmental pollution. The bottom plate 4 is also fixedly connected to the lower surface of the water storage tank 803. The four corners of the lower surface of the bottom plate 4 are fixedly connected to the support feet 5 to ensure that the waste heat recovery device is more durable.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A boiler waste heat recovery device, comprising a base plate (4), characterized in that: A waste heat recovery mechanism (8) is provided on one side of the upper surface of the base plate (4). The waste heat recovery mechanism (8) includes a water storage tank (803) fixedly connected to the upper surface of the base plate (4). A heating box (801) is fixedly connected to one side of the bottom surface of the water storage tank (803). Multiple heat conduction plates (802) are fixedly connected to the bottom surface of the heating box (801) in an alternating manner. A water outlet pipe (3) is fixedly connected to one side of the outer wall of the water storage tank (803). A water pump (2) is fixedly connected to one end of the water outlet pipe (3) away from the water storage tank (803). A boiler mechanism (1) is provided on one side of the base plate (4). A purification mechanism (7) is provided on the side of the upper surface of the base plate (4) away from the waste heat recovery mechanism (8). The purification mechanism (7) includes a purification chamber (701) fixedly connected to the other side of the upper surface of the base plate (4). A drain pipe (702) is fixedly connected to the lower surface of the purification chamber (701). A smoke exhaust pipe (703) is fixedly connected to the outer wall of the purification chamber (701) near the waste heat recovery mechanism (8). A secondary filter screen (704) is provided at the upper end of the inner wall of the purification chamber (701). An activated carbon filter element (705) is provided at the upper end of the secondary filter screen (704).

2. The boiler waste heat recovery device according to claim 1, characterized in that: The boiler mechanism (1) includes a boiler shell (101) provided on one side of the base plate (4), and an insulation chamber (102) is provided inside the boiler shell (101).

3. The boiler waste heat recovery device according to claim 1, characterized in that: Support feet (5) are fixedly connected to the four corners of the lower surface of the base plate (4).

4. A boiler waste heat recovery device according to claim 2, characterized in that: A flue gas inlet pipe (12) is fixedly connected to the outer wall of the boiler shell (101) near the waste heat recovery mechanism (8). The end of the flue gas inlet pipe (12) away from the boiler shell (101) is connected to the heating box (801).

5. A boiler waste heat recovery device according to claim 4, characterized in that: The inlet pipe (12) is equipped with a one-way valve (11).

6. A boiler waste heat recovery device according to claim 1, characterized in that: The other end of the exhaust pipe (703) is connected through to the heating box (801).

7. A boiler waste heat recovery device according to claim 1, characterized in that: The other end of the outlet pipe (3) is connected through to the heat preservation chamber (102). The rear end of the boiler mechanism (1) is provided with an inlet pipe (10). The two ends of the inlet pipe (10) are respectively connected through to the interior of the heat preservation chamber (102) and the water storage tank (803).

8. A boiler waste heat recovery device according to claim 1, characterized in that: A water inlet (9) is provided on one side of the upper surface of the water storage tank (803), and a water outlet (6) is provided at the lower end of the front outer wall of the water storage tank (803).

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