Flue gas filtering device of waste heat boiler

Abstract

The utility model relates to the technical field of boiler flue gas treatment, in particular to a waste heat boiler flue gas filtering device which comprises a base, one side of the top of the base is fixedly connected with a heat utilization box, the top of one side of the heat utilization box is fixedly connected with a flue gas inlet pipe, and one end of the flue gas inlet pipe is fixedly connected with a circulating pipe. And one end of the circulating pipe is fixedly connected with a filter box. Through the arrangement of the servo motor, the rotating rod and the cleaning brush, when the filter box is cleaned, an operator starts the servo motor, the servo motor operates to drive the rotating rod to rotate, and the rotating rod rotates to enable the connecting rod to drive the cleaning brush to rotate, so that smoke adsorbates on the inner wall of the filter box are cleaned; then an operator opens a valve on a blow-off pipe to enable the dirt and dust to leave the filter box from the blow-off pipe, and if smoke dust adsorbates are too stubborn, water can be added into the filter box through a smoke exhaust pipe, and then a servo motor is started, so that the effect of cleaning the filter box is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas treatment, in particular to a waste heat boiler flue gas filtering device. Background Technique

[0002] A boiler is an energy conversion device. The energy input into the boiler includes the chemical energy in fuel and electric energy. The boiler outputs steam, high-temperature water or organic heat carriers with a certain amount of heat energy. The boiler includes two major parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's livelihood, or can be converted into mechanical energy through a steam power device, or the mechanical energy can be further converted into electric energy through a generator. A boiler that provides hot water is called a hot water boiler, which is mainly used for life and has a small amount of application in industrial production. A boiler that generates steam is called a steam boiler, often simply referred to as a boiler, and is mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises. During the use of the boiler, flue gas with waste heat will be generated. At this time, a waste heat boiler flue gas filtering device needs to be used to filter the flue gas to avoid the direct release of harmful substances in the flue gas into the air, causing pollution to the atmosphere and damage to the physical health of personnel.

[0003] However, the existing waste heat boiler flue gas filtering devices have the following disadvantages:

[0004] (1) For the existing waste heat boiler flue gas filtering device, the cleaning function inside the filtering box is weak. During use, impurities in the flue gas will be adsorbed on the inner side wall of the filtering box during filtration, resulting in a problem of reduced use efficiency of the filtering box.

[0005] (2) For the existing waste heat boiler flue gas filtering device, the function of utilizing the waste heat inside the flue gas is weak. During use, the direct filtration and discharge of the flue gas causes a problem of waste of heat energy. Content of the Utility Model

[0006] The purpose of the utility model is to provide a waste heat boiler flue gas filtering device to solve the problems put forward in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A waste heat boiler flue gas filtering device includes a base. One side of the top of the base is fixedly connected with a heat utilization box. The top of one side of the heat utilization box is fixedly connected with a smoke inlet pipe. One end of the smoke inlet pipe is fixedly connected with a circulation pipe. One end of the circulation pipe is fixedly connected with a filtering box. The top of the filtering box is fixedly connected with a servo motor. The rotating shaft of the servo motor is fixedly connected with a rotating rod. Both sides of the rotating rod are fixedly connected with connecting rods. One end of each connecting rod is fixedly connected with a cleaning brush.

[0009] Preferably, a water inlet pipe is fixedly connected to the top of the heat utilization box, and a water outlet pipe is fixedly connected to the bottom of one side of the heat utilization box. Valves are fixedly installed on the outer surfaces of the water inlet pipe and the water outlet pipe.

[0010] Preferably, a fixed plate is fixedly connected to the inner side wall of the filter box. A first filter screen is fixedly connected to the bottom of the fixed plate, a second filter screen is fixedly connected to the top of the fixed plate, and a plurality of ventilation holes are formed inside the fixed plate.

[0011] Preferably, support feet are fixedly connected to the four corners of the bottom of the base, and anti-slip pads are fixedly connected to the bottoms of the support feet.

[0012] Preferably, a filter box is fixedly connected to one side of the top of the base away from the heat utilization box, and an observation glass is fixedly installed on the front surface of the filter box.

[0013] Preferably, an exhaust pipe is fixedly connected to one side of the top of the filter box, a sewage discharge pipe is fixedly connected to the bottom of the filter box, and a valve is fixedly installed on the outer surface of the sewage discharge pipe.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. When cleaning the filter box, the operator starts the servo motor. The operation of the servo motor drives the rotating rod to rotate. The rotation of the rotating rod makes the connecting rod drive the cleaning brush to rotate, so as to clean the soot adsorbents on the inner wall of the filter box. Then, the operator opens the valve on the sewage discharge pipe, so that the dirt and dust leave the filter box through the sewage discharge pipe. If the soot adsorbents are too stubborn, water can be added to the filter box through the exhaust pipe, and then the servo motor is started, so as to achieve the effect of cleaning the filter box.

[0016] 2. When in use, the flue gas with heat enters the circulation pipe through the smoke inlet pipe. The circulation pipe surrounds the inner wall of the heat utilization box. Water is flowed into the heat utilization box through the water inlet pipe. The water in the heat utilization box is heated by the heat of the flue gas inside the circulation pipe. Then, the valve of the water outlet pipe is opened, and the hot water leaves the inside of the heat utilization box through the water outlet pipe, so as to achieve the effect of utilizing the waste heat in the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 It is a schematic diagram of the sectional structure of the present utility model.

[0019] Figure 3 It is a schematic diagram of the first filter screen, the second filter screen, etc. of the present utility model.

[0020] Figure 4Schematic diagrams of the servo motor and cleaning brush of the present utility model, etc.

[0021] In the figure: 1, base; 2, heat utilization box; 3, smoke inlet pipe; 4, circulation pipe; 5, filter box; 6, servo motor; 7, rotating rod; 8, connecting rod; 9, cleaning brush; 10, fixing plate; 11, second filter screen; 12, first filter screen; 13, water inlet pipe; 14, water outlet pipe; 15, smoke exhaust pipe; 16, sewage discharge pipe; 17, support feet; 18, anti-slip pads; 19, observation glass. Specific embodiments

[0022] Please refer to Figures 1-4 As shown, a waste heat boiler flue gas filtration device provided by the present utility model includes a base 1. One side of the top of the base 1 is fixedly connected with a heat utilization box 2. The top of one side of the heat utilization box 2 is fixedly connected with a smoke inlet pipe 3. One end of the smoke inlet pipe 3 is fixedly connected with a circulation pipe 4. When in use, the flue gas with heat enters the circulation pipe 4 through the smoke inlet pipe 3. The circulation pipe 4 surrounds the inner wall of the heat utilization box 2. Water is flowed into the heat utilization box 2 through the water inlet pipe 13. The water inside the heat utilization box 2 is heated by the heat of the flue gas inside the circulation pipe 4. Then, the valve of the water outlet pipe 14 is opened, and the hot water leaves the inside of the heat utilization box 2 through the water outlet pipe 14, so as to achieve the effect of utilizing the waste heat inside the flue gas. The circulation pipe 4 surrounds the inside of the heat utilization box 2, so that the heat of the flue gas inside the circulation pipe 4 is more thoroughly absorbed by the water. One end of the circulation pipe 4 is fixedly connected with a filter box 5. The tail end of the circulation pipe 4 sends the flue gas whose heat has been absorbed into the filter box 5. In addition, the inner cavity of the filter box 5 is cylindrical. The top of the filter box 5 is fixedly connected with a servo motor 6. The rotating shaft of the servo motor 6 is fixedly connected with a rotating rod 7. Both sides of the rotating rod 7 are fixedly connected with connecting rods 8. One end of the connecting rod 8 is fixedly connected with a cleaning brush 9. When cleaning the filter box 5, the operator starts the servo motor 6. The operation of the servo motor 6 drives the rotating rod 7 to rotate. The rotation of the rotating rod 7 makes the connecting rod 8 drive the cleaning brush 9 to rotate, so as to clean the soot adsorbents on the inner wall of the filter box 5;

[0023] The top end of the heat utilization box 2 is fixedly connected with a water inlet pipe 13. The bottom of one side of the heat utilization box 2 is fixedly connected with a water outlet pipe 14. Valves are fixedly installed on the outer surfaces of the water inlet pipe 13 and the water outlet pipe 14. The flow of water in and out of the heat utilization box 2 is controlled by the valves installed on the outer surfaces of the water inlet pipe 13 and the water outlet pipe 14;

[0024] The inner side wall of the filter box 5 is fixedly connected with a fixing plate 10. The bottom of the fixing plate 10 is fixedly connected with a first filter screen 12. The top of the fixing plate 10 is fixedly connected with a second filter screen 11. A number of ventilation holes are opened inside the fixing plate 10. After the cooled flue gas enters the filter box 5 through the circulation pipe 4, the flue gas will float upward and is filtered by the second filter screen 11 and the first filter screen 12. After the flue gas is filtered, it is discharged through the smoke exhaust pipe 15;

[0025] At the four corners of the bottom of the base 1, support feet 17 are fixedly connected. At the bottom of the support feet 17, anti-slip pads 18 are fixedly connected. The device is supported by the support feet 17. Through the setting of the anti-slip pads 18, the device is prevented from sliding.

[0026] On one side of the top of the base 1 away from the heat utilization box 2, a filter box 5 is fixedly connected. An observation glass 19 is fixedly installed on the front of the filter box 5. Through the setting of the observation glass 19, the situation inside the filter box 5 can be observed from the outside.

[0027] On one side of the top of the filter box 5, an exhaust pipe 15 is fixedly connected. At the bottom of the filter box 5, a sewage discharge pipe 16 is fixedly connected. A valve is fixedly installed on the outer surface of the sewage discharge pipe 16. Through the setting of the exhaust pipe 15, the filtered flue gas is discharged. Through the setting of the sewage discharge pipe 16, the cleaned dust is discharged.

[0028] When this waste heat boiler flue gas filtering device is in use, the flue gas with heat enters the circulation pipe 4 through the smoke inlet pipe 3. The circulation pipe 4 surrounds the inner wall of the heat utilization box 2. Water flows into the heat utilization box 2 through the water inlet pipe 13. The water inside the heat utilization box 2 is heated by the heat of the flue gas inside the circulation pipe 4. Then, the valve of the water outlet pipe 14 is opened, and the hot water leaves the inside of the heat utilization box 2 through the water outlet pipe 14, thereby achieving the effect of utilizing the waste heat inside the flue gas. Because the circulation pipe 4 is attached to the inner wall of the heat utilization box 2 for surrounding, the heat of the flue gas inside the circulation pipe 4 is more thoroughly absorbed by the water. Then, the tail end of the circulation pipe 4 sends the flue gas whose heat has been absorbed into the filter box 5. After the cooled flue gas enters the filter box 5 through the circulation pipe 4, the flue gas will float upward and is filtered by the second filter screen 11 and the first filter screen 12. After the flue gas is filtered, it is discharged through the exhaust pipe 15. When cleaning the filter box 5 after use, the operator starts the servo motor 6. The operation of the servo motor 6 drives the rotating rod 7 to rotate. The rotation of the rotating rod 7 causes the connecting rod 8 to drive the cleaning brush 9 to rotate, thereby cleaning the soot adsorbents on the inner wall of the filter box 5. Then, by opening the valve of the sewage discharge pipe 16, the cleaned dust is discharged. If the soot adsorbents are too stubborn, water can be added into the filter box 5 through the exhaust pipe 15, and then the servo motor 6 is started, so as to achieve the effect of cleaning the inner wall of the filter box 5.

Claims

1. A waste heat boiler flue gas filtering device, characterized in that: The utility model comprises a base (1), wherein a heat utilization box (2) is fixedly connected to one side of the top of the base (1), a smoke inlet pipe (3) is fixedly connected to the top of one side of the heat utilization box (2), one end of the smoke inlet pipe (3) is fixedly connected to a circulation pipe (4), one end of the circulation pipe (4) is fixedly connected to a filter box (5), the top of the filter box (5) is fixedly connected to a servo motor (6), the rotating shaft of the servo motor (6) is fixedly connected to a rotating rod (7), both sides of the rotating rod (7) are fixedly connected to connecting rods (8), and one end of the connecting rod (8) is fixedly connected to a cleaning brush (9).

2. A waste heat boiler flue gas filtering device according to claim 1, characterized in that: A water inlet pipe (13) is fixedly connected to the top of the heat utilization box (2), a water outlet pipe (14) is fixedly connected to the bottom of one side of the heat utilization box (2), and valves are fixedly installed on the outer surfaces of the water inlet pipe (13) and the water outlet pipe (14).

3. The waste heat boiler flue gas filtering device according to claim 1, characterized in that: A fixing plate (10) is fixedly connected to the inner wall of the filter box (5), a first filter screen (12) is fixedly connected to the bottom of the fixing plate (10), a second filter screen (11) is fixedly connected to the top of the fixing plate (10), and a plurality of air holes are provided inside the fixing plate (10).

4. The waste heat boiler flue gas filtering device according to claim 1, characterized in that: Support feet (17) are fixedly connected to the four corners of the bottom of the base (1), and anti-slip pads (18) are fixedly connected to the bottoms of the support feet (17).

5. The waste heat boiler flue gas filtering device according to claim 1, characterized in that: A filter box (5) is fixedly connected to a side of the top of the base (1) away from the heat utilization box (2), and an observation glass (19) is fixedly mounted on the front of the filter box (5).

6. The waste heat boiler flue gas filtering device according to claim 1, characterized in that: A smoke exhaust pipe (15) is fixedly connected to one side of the top of the filter box (5), a sewage discharge pipe (16) is fixedly connected to the bottom of the filter box (5), and a valve is fixedly installed on the outer surface of the sewage discharge pipe (16).

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