Steam boiler flue gas recirculation device

Abstract

The utility model discloses a steam boiler flue gas recirculation device, and belongs to the technical field of waste gas treatment equipment. The steam boiler flue gas recirculation device comprises a pre-water tank, a plurality of flow dividing pipes are fixedly connected between the inner walls of the two sides of the pre-water tank, the two ends of each flow dividing pipe extend to the two sides of the pre-water tank respectively, one end of each flow dividing pipe is fixedly connected with a rectifying pipe, and the other end of each flow dividing pipe is fixedly connected with a gas discharging pipe; according to the steam boiler flue gas recirculation device, in the process, flue gas heat in the multiple flow dividing pipes can be used for preheating supply water, so that energy consumption is reduced, the heat loss of the steam boiler is reduced, flue gas in the gas discharging pipe can enter the treatment box, large-particle matter in the flue gas is filtered out through two filter screen plates, and the flue gas is recycled. And finally, the purified flue gas is discharged out of the treatment box and enters the steam boiler again for combustion supporting, so that recycling of the flue gas is achieved, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment equipment technology, and more specifically, to a steam boiler flue gas recirculation device. Background Technology

[0002] A steam boiler is a specialized piece of equipment that produces steam. It generates heat through fuel combustion, which heats water to a boiling point to produce steam. Steam boilers can be categorized by fuel type (electric, oil, gas, coal), fuel method (manual, chain grate), and construction method (vertical, horizontal). They have wide applications in industries such as power generation, chemical processing, textiles, and heating, making them indispensable equipment in industrial production.

[0003] In traditional steam boilers, flue gas is usually discharged directly through exhaust pipes after combustion, which not only leads to a large amount of heat loss but also causes environmental pollution. In order to improve energy efficiency and reduce environmental pollution, a device for recycling flue gas is proposed, which aims to reduce energy consumption, improve energy efficiency, and reduce environmental pollution. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a steam boiler flue gas recirculation device, which can use the heat of flue gas to preheat the supply water, thereby reducing energy consumption and heat loss of the steam boiler. Finally, the purified flue gas is discharged outside the treatment box and re-enters the steam boiler for combustion, thus realizing the recirculation of flue gas and improving energy utilization efficiency.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A steam boiler flue gas recirculation device, comprising:

[0009] A pre-water tank, wherein multiple diversion pipes are fixedly connected between the inner walls of the two sides of the pre-water tank, and the two ends of each diversion pipe extend to the two sides of the pre-water tank respectively. One end of the multiple diversion pipes is fixedly connected to a rectifier pipe, and the other end of the multiple diversion pipes is fixedly connected to an air discharge pipe.

[0010] A discharge pipe, which is fixedly connected to a rectifier pipe;

[0011] A treatment box, fixedly connected to one end of an exhaust pipe and in communication with the exhaust pipe, wherein two filter plates slide through one inner wall of the treatment box; and

[0012] A limiting and fixing component is disposed on one outer surface of the processing box.

[0013] In a preferred embodiment of this utility model, the limiting and fixing assembly includes a mounting frame plate, a pressure plate, a control box, a transmission threaded rod, a transmission gear, and a transmission toothed plate. The mounting frame plate is fixedly connected to one outer surface of the processing box. The pressure plate is rotatably connected between the processing box and the mounting frame plate. The control box is fixedly connected to one outer surface of the mounting frame plate. The transmission gear is rotatably connected between the front and rear inner walls of the control box, and the transmission gear is fixedly connected to the pressure plate. The transmission threaded rod is rotatably connected between the two inner walls of the control box. The transmission toothed plate is threadedly connected to the transmission threaded rod, and the transmission threaded rod is meshed with the transmission gear.

[0014] As a preferred embodiment of this utility model, the limiting and fixing assembly further includes a drive motor, which is fixedly installed on one side of the outer surface of the control box, and the output end of the drive motor is fixedly connected to the transmission threaded rod.

[0015] As a preferred embodiment of this utility model, two support rods are fixedly connected between the inner walls of the two sides of the control box, and the transmission gear plate is slidably sleeved on the two support rods.

[0016] As a preferred embodiment of this utility model, both support rods are made of stainless steel.

[0017] As a preferred embodiment of this utility model, the top of the processing box is fixedly connected to a vent.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, this utility model provides a steam boiler flue gas recirculation device, which has the following beneficial effects:

[0020] (1) In this steam boiler flue gas recirculation device, when the flue gas is discharged from the steam boiler through the discharge pipe into the rectifier pipe, the rectifier pipe transports the heated flue gas through multiple branch pipes to the unloading pipe. During this process, the heat of the flue gas inside the multiple branch pipes is used to preheat the supply water, thereby reducing energy consumption and reducing the heat loss of the steam boiler. The flue gas inside the unloading pipe enters the interior of the treatment box, where two filter plates filter the flue gas for large particulate matter. Finally, the purified flue gas is discharged outside the treatment box and re-enters the steam boiler for combustion, thereby realizing the recirculation of flue gas and improving energy utilization efficiency.

[0021] (2) The pressure plate is attached to the side surfaces of the two filter screens, so that the two filter screens are fixedly installed inside the treatment box. When the filter screens are used for too long and are blocked by dust and debris, reducing the filtration efficiency, the drive motor is started by controlling the drive motor to rotate, which drives the transmission threaded rod to move, the transmission gear plate to rotate, the transmission gear plate to rotate, and the transmission gear to rotate the pressure plate, so that the pressure plate is separated from the two filter screens. Thus, the filter screens can be quickly removed for cleaning, maintenance or replacement, thereby avoiding the decrease in the filtration efficiency of the treatment box and ensuring the flue gas purification effect. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a sectional view of the pre-water tank of this utility model;

[0024] Figure 3 This is a cross-sectional view of the processing box of this utility model;

[0025] Figure 4 This is a cross-sectional view of the control box of this utility model;

[0026] Figure 5 For the present utility model Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 This is a perspective view of the filter plate of this utility model.

[0028] Explanation of the labels in the diagram:

[0029] 1. Discharge pipe; 2. Rectifier pipe; 3. Pre-water tank; 4. Air discharge pipe; 5. Treatment box; 6. Diverter pipe; 7. Filter screen plate; 8. Mounting frame plate; 9. Pressure plate; 10. Control box; 11. Drive motor; 12. Transmission threaded rod; 13. Transmission gear; 14. Transmission gear plate; 15. Support rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] Example:

[0032] Please see Figures 1-6 A steam boiler flue gas recirculation device, comprising:

[0033] The pre-water tank 3 has multiple diversion pipes 6 fixedly connected between the inner walls of its two sides. Each diversion pipe 6 extends to both sides of the pre-water tank 3. One end of each diversion pipe 6 is fixedly connected to a rectifier pipe 2, and the other end of each diversion pipe 6 is fixedly connected to an air discharge pipe 4.

[0034] Discharge pipe 1 is fixedly connected to rectifier pipe 2;

[0035] Treatment box 5 is fixedly connected to one end of the exhaust pipe 4 and is in communication with the exhaust pipe 4. Two filter screens 7 slide through one inner wall of the treatment box 5; and

[0036] A limiting and fixing component is provided on one outer surface of the processing box 5.

[0037] In a specific embodiment of this utility model, the discharge pipe 1 and the rectifier pipe 2 are connected, and the rectifier pipe 2, the unloading pipe 4, and multiple branch pipes 6 are also connected. The discharge pipe 1 is connected to the exhaust port of the steam boiler. The pre-water tank 3 is used to store the supply water of the steam boiler. When the flue gas is discharged from the steam boiler through the discharge pipe 1 into the rectifier pipe 2, the rectifier pipe 2 transports the heated flue gas through multiple branch pipes 6 into the unloading pipe 4. During this process, the heat of the flue gas inside the multiple branch pipes 6 is used to preheat the supply water, thereby reducing energy consumption and reducing the heat loss of the steam boiler. The flue gas inside the unloading pipe 4 enters the interior of the treatment box 5, where two filter plates 7 filter the flue gas for large particles. Finally, the purified flue gas is discharged outside the treatment box 5 and re-enters the steam boiler for combustion, thereby realizing the recycling of flue gas and improving energy utilization efficiency.

[0038] Specifically, the limiting and fixing assembly includes a mounting frame plate 8, a pressure plate 9, a control box 10, a transmission threaded rod 12, a transmission gear 13, and a transmission gear plate 14. The mounting frame plate 8 is fixedly connected to one outer surface of the processing box 5. The pressure plate 9 is rotatably connected between the processing box 5 and the mounting frame plate 8. The control box 10 is fixedly connected to one outer surface of the mounting frame plate 8. The transmission gear 13 is rotatably connected between the front and rear inner walls of the control box 10, and the transmission gear 13 is fixedly connected to the pressure plate 9. The transmission threaded rod 12 is rotatably connected between the two inner walls of the control box 10. The transmission gear plate 14 is threadedly connected to the transmission threaded rod 12, and the transmission threaded rod 12 is meshed with the transmission gear 13.

[0039] In this embodiment, the pressure plate 9 is attached to the side surfaces of the two filter screens 7, so that the two filter screens 7 are fixedly installed inside the treatment box 5. When the filter screens 7 are used for too long and become clogged with dust and debris, reducing the filtration efficiency, the transmission threaded rod 12 is controlled to rotate, which drives the transmission gear plate 14 to move. The transmission gear plate 14 drives the transmission gear 13 to rotate, and the transmission gear 13 drives the pressure plate 9 to rotate, so that the pressure plate 9 is disengaged from the two filter screens 7. Thus, the filter screens 7 can be quickly removed for cleaning, maintenance or replacement, thereby avoiding a decrease in the filtration efficiency of the treatment box 5 and ensuring the flue gas purification effect.

[0040] Specifically, the limiting and fixing assembly also includes a drive motor 11, which is fixedly installed on one side of the outer surface of the control box 10, and the output end of the drive motor 11 is fixedly connected to the transmission threaded rod 12.

[0041] In this embodiment, the drive motor 11 is started by controlling the drive motor 11 to drive the transmission threaded rod 12 to rotate.

[0042] Specifically, two support rods 15 are fixedly connected between the inner walls of the two sides of the control box 10, and the transmission gear plate 14 is slidably sleeved on the two support rods 15.

[0043] In this embodiment, the two support rods 15 keep the transmission gear plate 14 stable during movement.

[0044] Specifically, both support rods 15 are made of stainless steel.

[0045] In this embodiment, the support rod 15 has a smooth surface with low friction, high strength and durability.

[0046] Specifically, a vent pipe is fixedly connected to the top of the processing box 5.

[0047] In this embodiment, the vent pipe is used to introduce the purified flue gas inside the treatment box 5 into the steam boiler for combustion assistance, thereby realizing the recirculation of the flue gas.

[0048] Working principle: When flue gas is discharged from the steam boiler through the discharge pipe 1 into the rectifier pipe 2, the rectifier pipe 2 transports the heated flue gas through multiple branch pipes 6 to the unloading pipe 4. During this process, the heat of the flue gas inside the multiple branch pipes 6 is used to preheat the supply water, thereby reducing energy consumption and heat loss of the steam boiler. The flue gas inside the unloading pipe 4 enters the processing box 5, where two filter plates 7 filter large particles. Finally, the purified flue gas is discharged outside the processing box 5 and re-enters the steam boiler for combustion, thus realizing the recycling of flue gas and improving energy efficiency. The pressure plate 9 is attached to the side surfaces of the two filter plates 7, so that the two filter plates 7 are fixedly installed inside the processing box 5. 7. When the filtration efficiency is reduced due to dust and debris clogging after prolonged use, the drive motor 11 is started, which drives the transmission threaded rod 12 to rotate, which in turn drives the transmission gear plate 14 to move. The transmission gear plate 14 drives the transmission gear 13 to rotate, which in turn drives the pressure plate 9 to rotate, causing the pressure plate 9 to disengage from the two filter screens 7. This allows the filter screens 7 to be quickly removed for cleaning, maintenance, or replacement, thus preventing a decrease in the filtration efficiency of the treatment box 5 and ensuring the flue gas purification effect. The control method of this utility model is controlled by manually starting and stopping the switch. The wiring diagram of the power components and the power supply are common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and wiring layout will not be explained in detail here.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A steam boiler flue gas recirculation device, characterized in that, include: A pre-water tank (3) is provided, and multiple diversion pipes (6) are fixedly connected between the inner walls of the two sides of the pre-water tank (3). The two ends of each diversion pipe (6) extend to the two sides of the pre-water tank (3). One end of the multiple diversion pipes (6) is fixedly connected to a rectifier pipe (2), and the other end of the multiple diversion pipes (6) is fixedly connected to an air discharge pipe (4). Discharge pipe (1), wherein the discharge pipe (1) is fixedly connected to the rectifier pipe (2); A treatment box (5) is fixedly connected to one end of an exhaust pipe (4) and is connected to the exhaust pipe (4). Two filter screens (7) slide through one side of the inner wall of the treatment box (5). A limiting and fixing component is disposed on one outer surface of the processing box (5).

2. The steam boiler flue gas recirculation device according to claim 1, characterized in that: The limiting and fixing assembly includes a mounting frame plate (8), a pressure plate (9), a control box (10), a transmission threaded rod (12), a transmission gear (13), and a transmission toothed plate (14). The mounting frame plate (8) is fixedly connected to one side of the outer surface of the processing box (5). The pressure plate (9) is rotatably connected between the processing box (5) and the mounting frame plate (8). The control box (10) is fixedly connected to one side of the outer surface of the mounting frame plate (8). The transmission gear (13) is rotatably connected between the front and rear inner walls of the control box (10), and the transmission gear (13) is fixedly connected to the pressure plate (9). The transmission threaded rod (12) is rotatably connected between the two inner walls of the control box (10). The transmission toothed plate (14) is threadedly connected to the transmission threaded rod (12), and the transmission threaded rod (12) is meshed with the transmission gear (13).

3. The steam boiler flue gas recirculation device according to claim 2, characterized in that: The limiting and fixing assembly also includes a drive motor (11), which is fixedly installed on one side of the outer surface of the control box (10), and the output end of the drive motor (11) is fixedly connected to the transmission threaded rod (12).

4. The steam boiler flue gas recirculation device according to claim 2, characterized in that: Two support rods (15) are fixedly connected between the inner walls of the two sides of the control box (10), and the transmission gear plate (14) is slidably sleeved on the two support rods (15).

5. A steam boiler flue gas recirculation device according to claim 4, characterized in that: Both of the support rods (15) are made of stainless steel.

6. The steam boiler flue gas recirculation device according to claim 1, characterized in that: A vent pipe is fixedly connected to the top of the processing box (5).

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