Flue gas pipeline filtering and automatic cleaning device

Abstract

The utility model discloses a flue gas pipeline filtering and automatic cleaning device, belongs to the technical field of pipeline cleaning, solves the problem that the labor intensity of workers is increased due to the fact that the flue gas pipeline needs to be cleaned and dredged manually after being blocked, and comprises a flue gas pipeline, and a heating tank is sleeved outside the flue gas pipeline. An exhaust port and an air inlet are formed in the top and the bottom of the heating tank respectively, a discharge port is formed in the bottom of the flue gas pipeline, a discharge pipe is arranged below the heating tank in a penetrating mode and communicated with the discharge port, a filter screen is arranged above the discharge port, the outer walls of the four corners of the filter screen are fixedly connected through fixing frame pull rods, a steel brush is arranged in the flue gas pipeline, and a connecting rod is arranged at the top of the steel brush. An electric actuating mechanism is arranged at the penetrating-out end of the connecting rod. According to the utility model, the problem that the flue gas pipeline is easily blocked due to long-term operation of the flue gas pipeline containing naphthalene, oil and the like is solved, the long-term effective operation of the system can be ensured, manual cleaning is not needed, the labor intensity of workers is reduced, and the safety risk of field operation is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline cleaning technology, specifically relating to a flue gas pipeline filtration and automatic cleaning device. Background Technology

[0002] Coking is an industry with prominent environmental problems. The escaping gas involved may contain naphthalene and oil, which can easily cause blockage of flue gas pipelines in the long run. This can lead to the VOCs system not operating properly, the inability to effectively collect the escaping gas on site, and abnormal emissions, which cannot meet current environmental protection requirements. Moreover, the blockage of flue gas pipelines requires manual cleaning and unblocking, which increases the labor intensity of employees and increases certain safety risks. Utility Model Content

[0003] The purpose of this invention is to provide a flue gas duct filtration and automatic cleaning device to solve the problem that manual cleaning and unblocking of flue gas ducts increases the labor intensity of employees and increases certain safety risks during operation.

[0004] The technical solution of this utility model is: a flue gas duct filtration and automatic cleaning device, including a flue gas duct, a heating tank is fitted outside the flue gas duct, an exhaust port and an air inlet are respectively provided at the top and bottom of the heating tank, an exhaust port is opened at the bottom of the flue gas duct, an exhaust pipe is passed through the bottom of the heating tank and communicates with the exhaust port, a valve body is provided on the exhaust pipe, a filter screen is provided above the exhaust port, the four corners of the outer wall of the filter screen are fixedly connected by a fixed frame tie rod, a steel brush is provided inside the flue gas duct, the steel brush is clamped on both sides of the filter screen, a connecting rod is provided at the top of the steel brush, the connecting rod passes through the flue gas duct and the heating tank, an electric actuator is provided at the end of the connecting rod, the lifting motor of the electric actuator is connected to the end of the connecting rod, the electric actuator also includes a limit protector and a time relay, the limit protector and the time relay are respectively connected to the lifting motor.

[0005] As a further improvement of this utility model, the steel brush includes a connecting plate and brush plates symmetrically arranged at the bottom of the connecting plate, with a brush body provided on the side of the brush plates that are close to each other.

[0006] As a further improvement of this utility model, inspection hole covers are provided on both sides of the flue gas duct.

[0007] As a further improvement of this utility model, flanges that cooperate with each other are respectively provided at both ends of the flue gas duct and the heating tank.

[0008] As a further improvement of this utility model, the lower part of the discharge pipe is designed as a funnel structure.

[0009] As a further improvement of this utility model, the filter screen is made of high-temperature resistant stainless steel material, and the pore size is no larger than 20 mesh.

[0010] The beneficial effects of this utility model are as follows: This utility model can introduce low-pressure steam into the heating tank through the air inlet to heat the outside of the flue gas pipe, thereby dissolving naphthalene, oil and other components on the filter screen and the flue gas pipe around the filter screen. The steel brush cleans the material filtered on and around the filter screen in a timely manner. The discharge pipe and discharge port are used to discharge the filter screen and the material cleaned by the steel brush, avoiding accumulation.

[0011] This invention solves the problem of blockage in coking VOCs flue gas pipelines caused by the presence of naphthalene, oil, etc. during long-term operation. It can ensure the long-term effective operation of the VOCs system, and eliminates the need for manual cleaning, thereby reducing the labor intensity of employees and the safety risks of on-site operations. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] In the diagram: 1. Flue gas duct; 2. Heating tank; 3. Exhaust port; 4. Inlet; 5. Discharge pipe; 6. Valve body; 7. Filter screen; 8. Steel brush; 9. Connecting rod; 10. Electric actuator; 11. Connecting plate; 12. Brush plate; 13. Brush body; 14. Flange; 15. Discharge port; 16. Filter screen fixing frame tie rod; 17. Inspection hole cover. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1 As shown, a flue gas duct filtration and automatic cleaning device includes a flue gas duct 1, a heating tank 2 sleeved on the outside of the flue gas duct 1, flanges 14 that fit together at both ends of the flue gas duct 1 and the heating tank 2, an exhaust port 3 and an air inlet 4 at the top and bottom of the heating tank 2, respectively, an exhaust port 15 at the bottom of the flue gas duct 1, an exhaust pipe 5 passing through the heating tank 2 and communicating with the exhaust port 15, a funnel structure at the lower part of the exhaust pipe 5, a valve body 6 on the exhaust pipe 5, a filter screen 7 above the exhaust port 15, the filter screen 7 being made of high-temperature resistant stainless steel with a pore size not exceeding 20 mesh, and the outer walls of the four corners of the filter screen 7 being connected to the filter screen fixing frame tie rod 1. 6. A steel brush 8 is installed inside the flue gas duct 1. The steel brush 8 includes a connecting plate 11 and brush plates 12 symmetrically arranged at the bottom of the connecting plate 11. A brush body 13 is installed on the side of the brush plates 12 that are close to each other. The steel brush 8 is clamped on both sides of the filter screen 7. A connecting rod 9 is installed at the top of the steel brush 8. The connecting rod 9 passes through the flue gas duct 1 and the heating tank 2. An electric actuator 10 is installed at the end of the connecting rod 9. The lifting motor of the electric actuator 10 is connected to the end of the connecting rod 9. The electric actuator 10 also includes a limit protector and a time relay. The limit protector and the time relay are respectively connected to the lifting motor. The inspection hole cover 17 facilitates daily fault inspection and maintenance.

[0016] Pre-set the parameters of the limit protector and time relay. During normal operation, close valve body 6 and connect it to the steam generating device through air inlet 4 to introduce low-pressure steam into heating tank 2. When the time relay reaches the cleaning time, electric actuator 10 starts the lifting motor. Steel brush 8 is driven by connecting rod 9 and moves up and down under the stroke limit of the limit protector to brush away the material and naphthalene, oil and other components on the flue gas pipe around filter screen 7. Operators can open valve body 6 at regular intervals according to the work plan to discharge the cleaned material through discharge pipe 5.

Claims

1. A flue gas duct filtration and automatic cleaning device, comprising a flue gas duct, characterized in that: The flue gas duct (1) is fitted with a heating tank (2). The top and bottom of the heating tank (2) are respectively provided with an exhaust port (3) and an air inlet (4). The bottom of the flue gas duct (1) is provided with an exhaust port (15). An exhaust pipe (5) is installed below the heating tank (2) and is connected to the exhaust port (15). A valve body (6) is provided on the exhaust pipe (5). A filter screen (7) is provided above the exhaust port (15). The four corners of the filter screen (7) are fixedly connected with a fixed frame tie rod (16). A steel brush (8) is provided in the channel (1). The steel brush (8) is clamped on both sides of the filter screen (7). A connecting rod (9) is provided at the top of the steel brush (8). The connecting rod (9) passes through the flue gas duct (1) and the heating tank (2). An electric actuator (10) is provided at the end of the connecting rod (9). The lifting motor of the electric actuator (10) is connected to the end of the connecting rod (9). The electric actuator (10) also includes a limit protector and a time relay. The limit protector and the time relay are respectively connected to the lifting motor.

2. The flue gas duct filtration and automatic cleaning device according to claim 1, characterized in that: The steel brush (8) includes a connecting plate (11) and brush plates (12) symmetrically arranged at the bottom of the connecting plate (11). The brush plates (12) are provided with brush bodies (13) on the side that are close to each other.

3. A flue gas duct filtration and automatic cleaning device according to claim 1 or 2, characterized in that: Inspection hole covers (17) are provided on both sides of the flue gas duct (1).

4. The flue gas duct filtration and automatic cleaning device according to claim 3, characterized in that: The flue gas duct (1) and the heating tank (2) are respectively provided with mutually cooperating flanges (14) at both ends.

5. The flue gas duct filtration and automatic cleaning device according to claim 4, characterized in that: The lower part of the discharge pipe (5) is designed as a funnel structure.

6. The flue gas duct filtration and automatic cleaning device according to claim 5, characterized in that: The filter screen (7) is made of high-temperature resistant stainless steel and has a pore size of no more than 20 mesh.

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