Boiler flue gas guiding device

Abstract

The utility model provides a boiler smoke guiding device which comprises a smoke guiding shell, a filtering assembly is arranged on the left side in the smoke guiding shell, a guiding assembly is arranged on the right side in the smoke guiding shell, a low-speed motor drives a cam to rotate at a low speed through a transmission shaft, and the cam rotating at the low speed drives a connecting vertical rod to move up and down in a reciprocating mode. A connecting vertical rod can drive a plurality of smoke guide sheets to swing up and down together through a connecting shaft rod, so that the smoke guide sheets swinging up and down diffuse smoke to enter the area inside the smoke outlet pipe, and external smoke waste heat recovery equipment can fully recover waste heat of the diffused smoke; the vibration motor can drive the flue gas filter screen plate to vibrate through the connecting piece and the supporting vertical plate, so that a part of impurities blocked by the left end face of the flue gas filter screen plate are vibrated off, the cleaning period of the flue gas filter screen plate is prolonged, and the impurities vibrated off can fall into the collecting box through the connecting shell to be temporarily stored.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas diversion, in particular to a boiler flue gas diversion 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 carrier with a certain amount of heat energy. During the use of the boiler, high-temperature flue gas will be discharged. At this time, a corresponding flue gas diversion device is needed to guide the high-temperature flue gas to the waste heat recovery device for heat recovery.

[0003] A waste heat boiler flue gas diversion device provided by the publication number "CN219624099U" sets the diversion component inclined upward along the inlet end of the flue, which can facilitate the diversion of flue gas. And along the inclined upward direction, the cross-sectional areas of more than three support beams show a trend of first increasing and then decreasing. When the flue gas is diverted through the diversion component, the flow direction of the flue gas can be adjusted, which can not only improve the flow efficiency of the flue gas in the flue, but also form a uniform pressure difference in the flue gas flue, so as to avoid the problem of fin tube shaking caused by the disorderly movement direction of the rotating flue gas.

[0004] However, the above technical solution and the existing technologies have the following defects:

[0005] Although the diversion device can divert the flue gas through the diversion plate, the diversion plate does not have the ability to swing up and down, resulting in the flow direction of the diverted flue gas remaining unchanged all the time. Therefore, the diverted flue gas can only flow through the middle area of the fin tubes in the waste heat recovery device and will not pass through the upper and lower ends of the fin tubes to heat them, resulting in the fin tubes being unable to fully absorb the waste heat in the flue gas. Secondly, there is no corresponding filtering structure inside the diversion device to block and filter the impurities in the flue gas, resulting in the impurities in the flue gas being easily directly introduced and adhered to the outer surface of the fin tubes in the waste heat recovery device. As the impurities increase, the heat absorption effect of the fin tubes will be affected. Therefore, it is necessary for the staff to clean the fin tubes regularly, and the practicability is poor. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a boiler flue gas diversion device to solve the problems raised in the above background technique.

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

[0008] A boiler flue gas diversion device, comprising a smoke outlet pipe, a smoke guide shell and a smoke inlet pipe. The inlet of the smoke guide shell is connected with the smoke inlet pipe, and the outlet of the smoke guide shell is connected with the smoke outlet pipe. A filtering component is arranged on the left side inside the smoke guide shell, and the filtering component is used for filtering the passing flue gas. A diversion component is arranged on the right side inside the smoke guide shell, and the diversion component is used for diverting the flue gas.

[0009] Preferably, the diversion component includes a low-speed motor, a heat-insulating support base, a transmission shaft, a cam, a connecting vertical rod, a smoke guide vane, a support shaft rod and a connecting shaft rod. The lower end surface of the smoke guide shell is fixedly connected with the heat-insulating support base. The lower end surface of the heat-insulating support base is provided with the low-speed motor. The right end of the low-speed motor is provided with the transmission shaft. The right end of the transmission shaft is provided with the cam. The connecting vertical rod is inserted into the right side inside the smoke guide shell. The smoke guide vane is installed on the right side inside the smoke guide shell. The support shaft rod is arranged on the right side inside the smoke guide vane. The connecting shaft rod is arranged inside the connecting vertical rod.

[0010] Preferably, the filtering component includes a sealing cover plate, a support vertical plate, a flue gas filter screen plate, a smoke guide cavity and a limit base. The left side of the upper end surface of the smoke guide shell is provided with the sealing cover plate. The support vertical plate is inserted into the sealing cover plate. The lower side of the left end surface of the support vertical plate is provided with the flue gas filter screen plate. The lower side inside the support vertical plate is provided with the smoke guide cavity. The limit base is arranged on the lower side inside the smoke guide shell.

[0011] Preferably, a connecting plate is arranged on the upper end surface of the support vertical plate. A vibration motor is installed at the middle position of the upper end surface of the connecting plate. The left and right sides of the upper end surface of the sealing cover plate are symmetrically provided with limit vertical rods.

[0012] Preferably, a damping spring is sleeved on the circumferential side of the limit vertical rod. A blocking sleeve is installed on the upper side of the circumferential side of the limit vertical rod. A fixing screw is installed on the left side inside the blocking sleeve.

[0013] Preferably, a sealing frame is embedded on the upper end surface of the sealing cover plate, and the sealing frame is matched with the support vertical plate. A sealing strip is installed on the lower end surface of the sealing cover plate. The left side of the lower end surface of the smoke guide shell is fixedly connected with a connecting shell. A collection box is installed on the lower side of the outer surface of the connecting shell. Mounting screws are installed on the upper side inside the collection box.

[0014] Preferably, a lining sealing ring is installed on the lower side of the circumferential side of the connecting vertical rod. Reinforcing rib strips are symmetrically arranged on the upper and lower end faces of the smoke guide vane. A notch is arranged on the left end face of the smoke guide vane.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. By starting the low-speed motor, the low-speed motor can drive the cam to rotate slowly through the transmission shaft. The cam drives the connecting vertical rod to move up and down reciprocally and drives a plurality of smoke guide vanes to swing up and down through the connecting shaft rod, so that the plurality of swinging smoke guide vanes expand the area of the smoke entering the inside of the smoke outlet pipe, so that the external flue gas waste heat recovery device can fully recover the waste heat of the diffused flue gas;

[0017] 2. By installing a flue gas filter plate, most of the impurities in the flue gas can be filtered and blocked. By starting the vibration motor, the vibration motor can drive the flue gas filter plate to vibrate through the connecting piece and the supporting vertical plate, so as to shake off a part of the impurities blocked on the left end face of the flue gas filter plate, thereby prolonging the cleaning cycle of the flue gas filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 is a front sectional view of the present utility model;

[0020] Figure 3 is a structural diagram of the filtering component in the present utility model;

[0021] Figure 4 is a structural diagram of the diversion component in the present utility model;

[0022] Figure 5 is Figure 2 an enlarged view of A in

[0023] In the figure: 1. Smoke outlet pipe; 2. Smoke guide shell; 3. Filtering component; 31. Vibration motor; 32. Sealing cover plate; 321. Sealing strip; 33. Supporting vertical plate; 331. Sealing frame; 34. Flue gas filter plate; 35. Smoke guide cavity; 36. Limiting base; 37. Connecting shell; 38. Collection box; 381. Installation screw; 39. Connecting plate; 311. Limiting vertical rod; 312. Blocking sleeve; 313. Fixing screw; 314. Damping spring; 4. Smoke inlet pipe; 5. Diversion component; 51. Low-speed motor; 511. Heat insulation support seat; 52. Transmission shaft; 53. Cam; 54. Connecting vertical rod; 541. Inner lining sealing ring; 55. Smoke guide vane; 551. Reinforcing rib; 552. Notch; 56. Support shaft rod; 57. Connecting shaft rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1 - 5 , the present utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A boiler flue gas diversion device includes a smoke outlet pipe 1, a smoke guide shell 2, and a smoke inlet pipe 4. The inlet of the smoke guide shell 2 is connected to the smoke inlet pipe 4, and the inlet of the smoke inlet pipe 4 is connected to the external boiler smoke exhaust end. The smoke inlet pipe 4 can guide the flue gas discharged from the external boiler into the interior of the smoke guide shell 2. The outlet of the smoke guide shell 2 is connected to the smoke outlet pipe 1, and the outlet of the smoke outlet pipe 1 is connected to the inlet of the external flue gas waste heat recovery device. The smoke outlet pipe 1 can guide the flue gas inside the smoke guide shell 2 into the external flue gas waste heat recovery device. A filtering component 3 is arranged on the left side inside the smoke guide shell 2, and the filtering component 3 is used to filter the passing flue gas to prevent impurities in the flue gas from blocking the external waste heat recovery device. A diversion component 5 is arranged on the right side inside the smoke guide shell 2, and the diversion component 5 is used to divert the flue gas.

[0028] The diversion component 5 includes a low-speed motor 51, a heat-insulating support base 511, a transmission shaft 52, a cam 53, a connecting vertical rod 54, a smoke guide vane 55, a support shaft rod 56, and a connecting shaft rod 57. The lower end surface of the smoke guide shell 2 is fixedly connected to the heat-insulating support base 511. The shape of the heat-insulating support base 511 is concave. The concave-shaped heat-insulating support base 511 can not only support the low-speed motor 51 but also prevent the heat at the bottom of the smoke guide shell 2 from being directly transferred to the low-speed motor 51. The lower end surface of the heat-insulating support base 511 is provided with a low-speed motor 51. The low-speed motor 51 is connected to an external control switch through a wire. The right end of the low-speed motor 51 is provided with a transmission shaft 52, and the transmission shaft 52 is connected to the cam 53 by welding. The right end of the transmission shaft 52 is provided with a cam 53. When the low-speed motor 51 works, it can drive the cam 53 to rotate slowly through the transmission shaft 52, so that the slowly rotating cam 53 drives the connecting vertical rod 54 to move up and down reciprocally.

[0029] Inside the right side of the smoke guide shell 2, a connecting vertical rod 54 is inserted. Inside the connecting vertical rod 54, there are connecting shaft rods 57. There are multiple connecting shaft rods 57, and the specifications of the multiple connecting shaft rods 57 are the same. The connecting vertical rod 54 can drive multiple smoke guide vanes 55 to swing up and down synchronously through the connecting shaft rods 57. Inside the right side of the smoke guide shell 2, there are smoke guide vanes 55 installed. There are multiple smoke guide vanes 55, and the specifications of the multiple smoke guide vanes 55 are the same. The multiple smoke guide vanes 55 can guide the passing flue gas to avoid the disorderly situation of the flue gas entering the external flue gas waste heat recovery device. Inside the right side of the smoke guide vane 55, there are support shaft rods 56. There are multiple support shaft rods 56, and the specifications of the multiple support shaft rods 56 are the same. Both the front and rear ends of the multiple support shaft rods 56 are embedded inside the smoke guide shell 2. The support shaft rods 56 can not only support the smoke guide vanes 55 but also enable the smoke guide vanes 55 to have the ability to swing up and down. On the lower side of the circumferential surface of the connecting vertical rod 54, an inner lining sealing ring 541 is installed. The inner lining sealing ring 541 makes the seal between the connecting vertical rod 54 and the smoke guide shell 2 better. On the upper and lower end faces of the smoke guide vane 55, reinforcing rib strips 551 are symmetrically arranged. There are multiple reinforcing rib strips 551, and the specifications of the multiple reinforcing rib strips 551 are the same. The multiple reinforcing rib strips 551 can further improve the strength of the smoke guide vane 55 and avoid the deformation of the smoke guide vane 55 easily during use. On the left end face of the smoke guide vane 55, a notch 552 is opened. The notch 552 prevents the connecting vertical rod 54 from hindering the up and down swinging movement of the smoke guide vane 55.

[0030] Embodiment Two:

[0031] On the basis of Embodiment One, in this embodiment, by installing a flue gas filter screen plate 34, most of the impurities in the flue gas can be filtered and blocked. By starting the vibration motor 31, the vibration motor 31 can drive the flue gas filter screen plate 34 to vibrate through the connecting piece and the support vertical plate 33, so as to shake off a part of the impurities blocked on the left end face of the flue gas filter screen plate 34, thereby prolonging the cleaning cycle of the flue gas filter screen plate 34.

[0032] The filtering component 3 includes a sealing cover plate 32, a supporting vertical plate 33, a flue gas filter screen plate 34, a smoke guiding cavity 35 and a limiting base 36. The sealing cover plate 32 is installed on the left side of the upper end face of the smoke guiding shell 2. The sealing cover plate 32 is a detachable structure. The detachable sealing cover plate 32 facilitates the later maintenance and replacement of the supporting vertical plate 33 and the flue gas filter screen plate 34 by the staff by taking them out of the interior of the smoke guiding shell 2. The supporting vertical plate 33 is inserted into the sealing cover plate 32. The supporting vertical plate 33 is connected to the connecting plate 39 by welding. The supporting vertical plate 33 can support the flue gas filter screen plate 34. The flue gas filter screen plate 34 is installed on the lower side of the left end face of the supporting vertical plate 33. The material of the flue gas filter screen plate 34 is sintered mesh. The flue gas filter screen plate 34 made of sintered mesh has excellent filtration accuracy, filtration impedance, mechanical strength, wear resistance and heat resistance, so as to block most of the impurities in the boiler flue gas passing through. A smoke guiding cavity 35 is formed in the lower side of the supporting vertical plate 33. The smoke guiding cavity 35 facilitates the passage of flue gas through the interior of the supporting vertical plate 33. A limiting base 36 is arranged on the lower side of the interior of the smoke guiding shell 2. The limiting base 36 is connected to the smoke guiding shell 2 by welding. The shape of the limiting base 36 is concave. The concave-shaped limiting base 36 can limit the bottom of the supporting vertical plate 33.

[0033] A connecting plate 39 is arranged on the upper end face of the supporting vertical plate 33. The connecting plate 39 can support the vibration motor 31. A vibration motor 31 is installed at the middle position of the upper end face of the connecting plate 39. The vibration motor 31 is connected to an external control switch through a wire. When the vibration motor 31 is working, it can drive the flue gas filter screen plate 34 to vibrate through the connecting plate 39 and the supporting vertical plate 33. Limiting vertical rods 311 are symmetrically arranged on the left and right sides of the upper end face of the sealing cover plate 32. The limiting vertical rods 311 are connected to the sealing cover plate 32 by welding. The limiting vertical rods 311 can limit the connecting plate 39 to prevent the connecting plate 39 from shaking and shifting during use. A damping spring 314 is sleeved on the circumferential side of the limiting vertical rod 311. The damping spring 314 has the ability to stretch up and down, so as to drive the connecting plate 39 to make up and down vibration movements when the vibration motor 31 is working. A blocking sleeve 312 is installed on the upper side of the circumferential side of the limiting vertical rod 311. The blocking sleeve 312 can block and limit the connecting plate 39 to prevent the connecting plate 39 from slipping upwards.

[0034] A fixing screw 313 is installed on the left side of the blocking sleeve 312, and the fixing screw 313 is convenient for installing and fixing the blocking sleeve 312. A sealing frame 331 is embedded in the upper end surface of the blocking cover plate 32, and the sealing frame 331 matches the supporting vertical plate 33. The sealing frame 331 makes the sealing between the supporting vertical plate 33 and the blocking cover plate 32 better. A sealing strip 321 is installed on the lower end surface of the blocking cover plate 32, and the sealing strip 321 makes the sealing between the blocking cover plate 32 and the smoke guide shell 2 better. A connecting shell 37 is fixedly connected to the left side of the lower end surface of the smoke guide shell 2, and the connecting shell 37 is connected to the smoke guide shell 2. The connecting shell 37 can guide the impurities that are shaken off to the collection box 38. A collection box 38 is installed on the lower side of the outer surface of the connecting shell 37, and the collection box 38 can collect the impurities that are shaken off. A mounting screw 381 is installed on the upper side of the inside of the collection box 38, and the mounting screw 381 can install and fix the collection box 38.

[0035] Working principle: During the use of this device, the smoke inlet pipe 4 can guide the smoke discharged from the external boiler to the inside of the smoke guide shell 2, and then the smoke filter plate 34 will block and filter the impurities in the smoke passing through, so as to prevent most of the impurities in the smoke from directly entering the external smoke waste heat recovery device and causing blockage. The filtered smoke will pass through the smoke guide cavity 35 and be guided by multiple smoke guide plates 55 to avoid the smoke entering the internal part of the external smoke waste heat recovery device from being scattered and disordered. The smoke after passive guidance will pass through The smoke outlet pipe 1 is guided to the outside flue gas waste heat recovery device for waste heat recovery; in this process, when the staff starts the low-speed motor 51, the low-speed motor 51 will drive the cam 53 to rotate at a low speed through the transmission shaft 52, so that the low-speed rotating cam 53 drives the connecting vertical rod 54 to move up and down, and the connecting vertical rod 54 will drive the multiple smoke guide plates 55 to swing up and down together through the connecting shaft rod 57, so that the multiple smoke guide plates 55 swinging up and down diffuse the smoke into the area inside the smoke outlet pipe 1, so as to recover the waste heat of the outside flue gas. The equipment fully recovers the waste heat of the diffused flue gas; when the vibration motor 31 is started, the vibration motor 31 can drive the flue gas filter plate 34 to vibrate through the connecting piece and the supporting vertical plate 33, so as to shake off a part of the impurities blocked by the left end face of the flue gas filter plate 34, thereby extending the cleaning cycle of the flue gas filter plate 34, and the impurities shaken off will pass through the connecting shell 37 and fall into the collecting box 38 for temporary storage. Later, the staff only needs to use an external wrench to disassemble the mounting screws 381, and then the collecting box 38 can be removed to pour out and clean the internal impurities. During the operation of the vibration motor 31, the limiting vertical rod 311 will limit the connecting plate 39, and the blocking sleeve 312 will block and limit the connecting plate 39 to prevent the connecting plate 39 from shaking or slipping upward during the vibration action, and the damping spring 314 makes the connecting plate 39 have a certain upward and downward elasticity, so as to drive the supporting vertical plate 33 to vibrate up and down. When the vibration motor 31 has worked for the required time, it can be turned off.

[0036] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A boiler flue gas diversion device, comprising a smoke outlet pipe (1), a smoke guide shell (2) and a smoke inlet pipe (4), characterized in that: The inlet of the smoke guide shell (2) is connected to a smoke inlet pipe (4), the outlet of the smoke guide shell (2) is connected to a smoke outlet pipe (1), a filtering component (3) is arranged on the left side inside the smoke guide shell (2), and the filtering component (3) is used for filtering the passing flue gas. A flow guiding component (5) is arranged on the right side inside the smoke guide shell (2), and the flow guiding component (5) is used for guiding the flue gas.

2. The boiler flue gas diversion device according to claim 1, wherein: The flow guiding component (5) includes a low-speed motor (51), a heat insulation support base (511), a transmission shaft (52), a cam (53), a connecting vertical rod (54), a smoke guide vane (55), a support shaft rod (56) and a connecting shaft rod (57). The lower end surface of the smoke guide shell (2) is fixedly connected to a heat insulation support base (511), the lower end surface of the heat insulation support base (511) is provided with a low-speed motor (51), the right end of the low-speed motor (51) is provided with a transmission shaft (52), the right end of the transmission shaft (52) is provided with a cam (53), a connecting vertical rod (54) is inserted into the right side inside the smoke guide shell (2), a smoke guide vane (55) is installed on the right side inside the smoke guide shell (2), a support shaft rod (56) is arranged on the right side inside the smoke guide vane (55), and a connecting shaft rod (57) is arranged inside the connecting vertical rod (54).

3. A boiler flue gas diversion device according to claim 1, characterized in that: The filtering component (3) includes a sealing cover plate (32), a support vertical plate (33), a flue gas filter mesh plate (34), a smoke guide through cavity (35) and a limiting base (36). The left side of the upper end surface of the smoke guide shell (2) is provided with a sealing cover plate (32), a support vertical plate (33) is inserted into the sealing cover plate (32), a flue gas filter mesh plate (34) is installed on the lower side of the left end surface of the support vertical plate (33), a smoke guide through cavity (35) is opened on the lower side inside the support vertical plate (33), and a limiting base (36) is arranged on the lower side inside the smoke guide shell (2).

4. A boiler flue gas diversion device according to claim 3, characterized in that: A connecting plate (39) is arranged on the upper end surface of the support vertical plate (33), a vibration motor (31) is installed at the middle position of the upper end surface of the connecting plate (39), and limiting vertical rods (311) are symmetrically arranged on the left and right sides of the upper end surface of the sealing cover plate (32).

5. The boiler flue gas diversion device according to claim 4, characterized in that: A damping spring (314) is sleeved on the circumferential side of the limiting vertical rod (311), a blocking sleeve (312) is installed on the upper side of the circumferential side of the limiting vertical rod (311), and a fixing screw (313) is installed on the left side inside the blocking sleeve (312).

6. The boiler flue gas diversion device according to claim 3, characterized in that: A sealing frame (331) is embedded on the upper end surface of the sealing cover plate (32), and the sealing frame (331) is matched with the support vertical plate (33). A sealing strip (321) is installed on the lower end surface of the sealing cover plate (32). A connecting shell (37) is fixedly connected to the left side of the lower end surface of the smoke guide shell (2), a collection box (38) is installed on the lower side of the outer surface of the connecting shell (37), and a mounting screw (381) is installed on the upper side inside the collection box (38).

7. A boiler flue gas diversion device according to claim 2, characterized in that: A lining sealing ring (541) is installed on the lower side of the circumferential side of the connecting vertical rod (54), reinforcing rib strips (551) are symmetrically arranged on the upper and lower end faces of the smoke guide vane (55), and a notch (552) is opened on the left end face of the smoke guide vane (55).

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