A fireproof and backflow-preventing flue gas diversion device

Abstract

This utility model provides a fireproof and backflow-proof flue gas guiding device, including a first smoke inlet pipe, a second smoke inlet pipe, and a third smoke inlet pipe. A filter assembly is provided between the first and second smoke inlet pipes. A fireproof backflow-proof valve is installed at the end of the third smoke inlet pipe near the transition cone. A water tank is fixed to the outside of the first smoke inlet pipe, and a water pump is installed at the upper end of the water tank. A hollow water guide frame is fixed to the inside of the first smoke inlet pipe and inside the water tank. Multiple nozzles are arranged in a circular array at the end of the hollow water guide frame away from the second smoke inlet pipe. A water pump is fixedly connected to the water pump's inlet with a water pump pipe, and a water pump is fixedly connected to the water pump's outlet with a drain pipe. In this utility model, through the overall structural design, the first and second smoke inlet pipes can be connected and installed, and the high-temperature flue gas entering the first smoke inlet pipe can be cooled and the dust and solid impurities contained in the flue gas can be filtered.

Description

Technical Field

[0001] This utility model relates to the field of flue gas diversion technology, and in particular to a fireproof and backflow-preventing flue gas diversion device. Background Technology

[0002] Industrial flue gas deflectors, also known as deflector hoods, are currently widely used in power plants, boilers, and other large industrial facilities. Existing flue pipes generally use deflector plates to discharge soot and gas during operation.

[0003] For example, Chinese utility model patent (CN221764228U) discloses an industrial kiln flue guide device, which describes: "Through the set guide pipe, the rotating motor at the upper end of the fixed block is started, so that the guide pipe can be rotated 90 degrees and then connected to the first or second diversion pipe to complete the filtration of different exhaust gases. The miniature electric hydraulic rod is retracted so that the roller can be disengaged from the inside of the annular groove, making it easy to remove the diversion pipe for cleaning."

[0004] However, the aforementioned patents are not convenient for cooling the high-temperature flue gas during use, nor for filtering dust and solid impurities contained in the flue gas. Consequently, these high-temperature impurities will directly impact the surface of the guiding components, causing wear and tear, which greatly shortens the service life of the guiding components. Therefore, this application proposes a fireproof and backflow-preventing flue gas guiding device. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a fireproof and backflow-preventing flue gas guiding device to solve the problem that it is not convenient to cool down the high-temperature flue gas being guided in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0007] A fireproof and backflow-preventing flue gas diversion device includes: a first smoke inlet pipe, a second smoke inlet pipe, and a third smoke inlet pipe. A filter assembly is provided between the first and second smoke inlet pipes. A transition cone is fixedly connected between the second and third smoke inlet pipes. A fireproof backflow-preventing valve is installed at one end of the third smoke inlet pipe near the transition cone. A water tank is fixedly located outside the first smoke inlet pipe. A water pump is installed at the upper end of the water tank. A hollow water guide frame is fixedly located inside the first smoke inlet pipe and inside the water tank. Multiple nozzles are arranged in a circular array at one end of the hollow water guide frame away from the second smoke inlet pipe. A water pump is fixedly connected to the water pump's inlet with a water pump pipe. A water pump is fixedly connected to the water pump's outlet with a drain pipe. The end of the water pump pipe away from the water pump extends into the inside of the water tank. The end of the drain pipe away from the water pump passes through the first smoke inlet pipe and extends into the hollow water guide frame.

[0008] The above technical solution can cool down the high-temperature flue gas flowing into the first flue gas inlet duct and filter out dust, solid impurities, etc. contained in the flue gas.

[0009] In one embodiment of the present invention, the filter assembly includes a first flange and a second flange. The first flange and the second flange are respectively fixed at one end of the first smoke inlet pipe and the second smoke inlet pipe that are close to each other. A plurality of bolts are arranged in a ring array between the first flange and the second flange. A first filter plate is fitted inside the first flange and a second filter plate is fitted inside the second flange.

[0010] In one embodiment of the present invention, a plurality of screws are arranged in a circular array between the first filter plate and the first flange, and between the second filter plate and the second flange.

[0011] In one embodiment of this utility model, a conical air inlet cylinder is fixed to the inner side of the hollow water guide frame away from the second smoke inlet pipe, and a maintenance pipeline is fixedly connected to the lower end of one side of the water tank.

[0012] In one embodiment of the present invention, a baffle plate is fixed on the inner side of the first smoke inlet pipe near the second smoke inlet pipe. Multiple inclined guide grooves are equally spaced inside the baffle plate. A water-blocking inclined plate is fixed on the end of the baffle plate away from the second smoke inlet pipe and at the upper end of the multiple inclined guide grooves.

[0013] In one embodiment of the present invention, a first water guide groove is provided inside the first smoke inlet pipe and at the lower end of the conical air inlet cylinder and the water-blocking inclined plate, and a second water guide groove is provided inside the water tank and at the lower end of the two first water guide grooves, and the first water guide groove and the second water guide groove are connected to each other.

[0014] In one embodiment of this utility model, a guide plate is installed on the inner side of the second smoke inlet pipe.

[0015] The above technical solution enables the connection and installation between the first and second flue gas inlet pipes, while simultaneously filtering dust and impurities in the flue gas. Furthermore, after cooling the high-temperature flue gas, it can intercept, collect, and recycle wastewater.

[0016] As described above, the fireproof and backflow-preventing flue gas diversion device of this utility model has the following beneficial effects:

[0017] This utility model, through its overall structural design, enables the connection and installation of the first and second smoke inlet pipes. It cools the high-temperature flue gas entering the first smoke inlet pipe and filters out dust and solid impurities contained in the flue gas. Simultaneously, after cooling the high-temperature flue gas, it can intercept and collect wastewater for recycling. When the flue gas enters the second smoke inlet pipe, the guide plate increases the airflow thrust, thereby enabling it to be discharged and guided at a stronger speed. In conjunction with the fireproof check valve, it further prevents the backflow of flue gas and blocks the spread of fire. Attached Figure Description

[0018] Figure 1 The diagram shown is an overall structural schematic of a fireproof and backflow-preventing flue gas diversion device disclosed in an embodiment of this utility model.

[0019] Figure 2 The diagram shown is a schematic of the filter assembly of a fireproof and backflow-preventing flue gas diversion device disclosed in an embodiment of this utility model.

[0020] Figure 3 The diagram shows a cross-sectional view of the first and second smoke inlet pipes of a fireproof and backflow-preventing flue gas diversion device disclosed in an embodiment of this utility model.

[0021] Figure 4 The diagram shows the first smoke inlet pipe and the inner side of the water tank of a fireproof and backflow-preventing flue gas diversion device disclosed in an embodiment of this utility model.

[0022] Component designation explanation:

[0023] 1. First smoke inlet duct; 2. Second smoke inlet duct; 3. Third smoke inlet duct; 4. First flange; 5. Second flange; 6. Bolt; 7. First filter plate; 8. Second filter plate; 9. Screw; 10. Guide plate; 11. Adapter cone pipe; 12. Fireproof check valve; 13. Water tank; 14. Water pump; 15. Pumping pipe; 16. Drain pipe; 17. Hollow water guide frame; 18. Conical air inlet cylinder; 19. Nozzle; 20. Maintenance pipeline; 21. Baffle plate; 22. Inclined guide channel; 23. Water-blocking inclined plate; 24. First water guide channel; 25. Second water guide channel. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Please see Figure 1-4This utility model provides a fireproof and backflow-preventing flue gas diversion device, including a first smoke inlet pipe 1, a second smoke inlet pipe 2 and a third smoke inlet pipe 3. In order to connect the first smoke inlet pipe 1 and the second smoke inlet pipe 2, and to filter the dust and impurities carried by the smoke as it passes through the first smoke inlet pipe 1 and the second smoke inlet pipe 2, a filter assembly is provided between the first smoke inlet pipe 1 and the second smoke inlet pipe 2.

[0026] Furthermore, the filter assembly includes a first flange 4 and a second flange 5. The first flange 4 and the second flange 5 are fixed to one end of the first flue gas inlet pipe 1 and the second flue gas inlet pipe 2 respectively. Multiple bolts 6 are arranged in a ring array between the first flange 4 and the second flange 5. The bolts 6 are used to connect and fix the first flange 4 and the second flange 5. A first filter plate 7 is fitted inside the first flange 4 and a second filter plate 8 is fitted inside the second flange 5. The first filter plate 7 and the second filter plate 8 are used to achieve multi-stage filtration and interception of dust and impurities carried in the flue gas. In order to facilitate flexible disassembly, assembly, maintenance and cleaning of the first filter plate 7 and the second filter plate 8, multiple screws 9 are arranged in a ring array between the first filter plate 7 and the first flange 4 and between the second filter plate 8 and the second flange 5.

[0027] Furthermore, when the high-temperature flue gas begins to enter the first flue gas inlet duct 1, in order to cool it down first, a water tank 13 is fixed to the outside of the first flue gas inlet duct 1, a water pump 14 is installed at the upper end of the water tank 13, a hollow water guide frame 17 is fixed to the inside of the first flue gas inlet duct 1 and located inside the water tank 13, and multiple nozzles 19 are connected in a ring array at the end of the hollow water guide frame 17 away from the second flue gas inlet duct 2, a water pump 15 is fixedly connected to the water pump 14, and a drain pipe 16 is fixedly connected to the water pump 14. The end of the water pump 15 away from the water pump 14 extends to the inside of the water tank 13, and the end of the drain pipe 16 away from the water pump 14 passes through the first flue gas inlet duct 1 and extends into the hollow water guide frame 17.

[0028] Furthermore, by starting the water pump 14, the water in the water tank 13 can be pumped into the hollow water guide frame 17 and sprayed outward through multiple nozzles 19 to achieve water cooling of the high-temperature flue gas. In order to prevent water vapor from being guided and transported synchronously with the flue gas, a conical air inlet cylinder 18 is fixed on the inner side of the hollow water guide frame 17 away from the second flue gas inlet pipe 2. In order to further intercept water vapor, a baffle plate 21 is fixed on the inner side of the first flue gas inlet pipe 1 near the second flue gas inlet pipe 2. Multiple inclined guide grooves 22 are equally spaced inside the baffle plate 21. Water-blocking inclined plates 23 are fixed on the end of the baffle plate 21 away from the second flue gas inlet pipe 2 and at the upper end of the multiple inclined guide grooves 22.

[0029] Furthermore, to facilitate the regular replacement of the water in the water tank 13 and to enable regular water replenishment, a maintenance pipe 20 is fixedly connected to the lower end of one side of the water tank 13.

[0030] Furthermore, in order to allow the water vapor to flow into the water tank 13 for collection after interception, and to facilitate its removal and recycling through the maintenance pipe 20, a first water guide groove 24 is provided inside the first smoke inlet pipe 1 and at the lower end of the conical air inlet cylinder 18 and the water-blocking inclined plate 23. A second water guide groove 25 is provided inside the water tank 13 and at the lower end of the two first water guide grooves 24. The first water guide grooves 24 and the second water guide grooves 25 are connected.

[0031] Furthermore, when the smoke enters the second smoke inlet duct 2, in order to increase the thrust of the ventilation airflow and thus enable it to be discharged and guided at a stronger speed, a guide plate 10 is installed on the inner side of the second smoke inlet duct 2. In order to connect and fix the second smoke inlet duct 2 and the third smoke inlet duct 3, a transition cone pipe 11 is fixedly connected between the second smoke inlet duct 2 and the third smoke inlet duct 3. When the smoke enters the third smoke inlet duct 3, in order to prevent the smoke from flowing back and to block the spread of fire, a fireproof backflow preventer 12 is installed at the end of the third smoke inlet duct 3 near the transition cone pipe 11.

[0032] This utility model, through its overall structural design, enables the connection and installation of the first smoke inlet pipe 1 and the second smoke inlet pipe 2. It cools the high-temperature flue gas flowing into the first smoke inlet pipe 1 and filters the dust and solid impurities contained in the flue gas. At the same time, after cooling the high-temperature flue gas, it can intercept and collect and recycle wastewater. When the flue gas enters the second smoke inlet pipe 2, the guide plate 10 increases the thrust of the ventilation airflow, thereby enabling it to be discharged and guided at a stronger speed. In conjunction with the fireproof check valve 12, it further prevents the backflow of flue gas and blocks the spread of fire.

[0033] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A fireproof and backflow-preventing flue gas diversion device, characterized in that: It includes a first smoke inlet pipe (1), a second smoke inlet pipe (2), and a third smoke inlet pipe (3). A filter assembly is provided between the first smoke inlet pipe (1) and the second smoke inlet pipe (2). A transition cone pipe (11) is fixedly connected between the second smoke inlet pipe (2) and the third smoke inlet pipe (3). A fireproof check valve (12) is installed at one end of the third smoke inlet pipe (3) near the transition cone pipe (11). A water tank (13) is fixed on the outside of the first smoke inlet pipe (1). A water pump (14) is installed at the upper end of the water tank (13). The inside of the first smoke inlet pipe (1) A hollow water guide frame (17) is fixed on the side and inside the water tank (13). Multiple nozzles (19) are connected in a ring array at one end of the hollow water guide frame (17) away from the second smoke inlet pipe (2). A water pump (14) is fixedly connected to a water pump pipe (15) at its water inlet and a drain pipe (16) is fixedly connected to its water outlet. The end of the water pump pipe (15) away from the water pump (14) extends to the inside of the water tank (13). The end of the drain pipe (16) away from the water pump (14) passes through the first smoke inlet pipe (1) and extends into the hollow water guide frame (17).

2. The fireproof and backflow-preventing flue gas diversion device according to claim 1, characterized in that: The filter assembly includes a first flange (4) and a second flange (5). The first flange (4) and the second flange (5) are fixed at one end of the first smoke inlet pipe (1) and the second smoke inlet pipe (2) respectively. A plurality of bolts (6) are arranged in a ring array between the first flange (4) and the second flange (5). A first filter plate (7) is fitted inside the first flange (4), and a second filter plate (8) is fitted inside the second flange (5).

3. A fireproof and backflow-preventing flue gas diversion device according to claim 2, characterized in that: Multiple screws (9) are arranged in a ring array between the first filter plate (7) and the first flange (4) and between the second filter plate (8) and the second flange (5).

4. A fireproof and backflow-preventing flue gas diversion device according to claim 1, characterized in that: The hollow water guide frame (17) has a conical air inlet cylinder (18) fixed on the inner side of the end away from the second smoke inlet pipe (2), and a maintenance pipeline (20) is fixedly connected to the lower end of the side of the water tank (13).

5. A fireproof and backflow-preventing flue gas diversion device according to claim 4, characterized in that: A baffle plate (21) is fixed on the inner side of the first smoke inlet pipe (1) near the second smoke inlet pipe (2). Multiple inclined guide grooves (22) are equidistantly arranged inside the baffle plate (21). Water-blocking inclined plates (23) are fixed on the end of the baffle plate (21) away from the second smoke inlet pipe (2) and at the upper end of the multiple inclined guide grooves (22).

6. A fireproof and backflow-preventing flue gas diversion device according to claim 5, characterized in that: The first smoke inlet pipe (1) is provided with a first water guide groove (24) at the lower end of the conical air inlet cylinder (18) and the water baffle (23). The water tank (13) is provided with a second water guide groove (25) at the lower end of the two first water guide grooves (24). The first water guide groove (24) and the second water guide groove (25) are connected.

7. A fireproof and backflow-preventing flue gas diversion device according to claim 1, characterized in that: The second smoke inlet pipe (2) is equipped with a guide plate (10) on its inner side.

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