Exhaust system for heating boilers

Abstract

This utility model relates to the field of exhaust structures, specifically an exhaust mechanism for a heating boiler, comprising: an air guide pipe and a water guide pipe, the ends of which are close to the boiler and connected to the surface of the boiler; an exhaust device installed at the end of the air guide pipe away from the boiler, the surface of which is connected to the end of the water guide pipe; wherein, the exhaust device includes a filter assembly fixedly connected to the end of the air guide pipe, and a servo motor is fixedly connected to the surface of the filter assembly; the device preheats the liquid inside the preheating chamber by passing high-temperature gas through a second vent pipe and multiple first vent pipes. Because the first vent pipe is spirally shaped to extend the flow path of the high-temperature gas, the gas heat exchange time is extended, and the spiral plate increases the contact area for heat exchange, thus preheating the water inside the boiler body, avoiding the waste of some of the heat energy generated inside the boiler body, and improving the energy efficiency of the device.

Description

Technical Field

[0001] This utility model relates to the field of exhaust structures, and in particular to an exhaust mechanism for heating boilers. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The hot water or steam produced in the boiler can directly provide the heat energy required for industrial production and people's lives. It can also be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. Boilers are used for heating in winter. The exhaust gas produced by boiler heating needs to be discharged.

[0003] A search of existing technology revealed a "boiler exhaust gas treatment device" with publication number "CN221808445U". This device separates dust and water in its filter box, and the filtered water then enters a high-pressure water tank to achieve water circulation and reduce water waste. However, when the device purifies the exhaust gas, the residual heat in the exhaust gas is not fully utilized, resulting in some heat energy wastage in the boiler and thus poor energy-saving performance.

[0004] Therefore, an exhaust mechanism for heating boilers is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an exhaust mechanism for heating boilers to solve the above-mentioned problems, improve the purification of exhaust gas, and address the issue that the residual heat in the exhaust gas is not fully utilized, resulting in the waste of some heat energy in the boiler and poor energy-saving effect of the device.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: an exhaust mechanism for a heating boiler, comprising: an air guide pipe and a water guide pipe, wherein the ends of the air guide pipe and the water guide pipe near the boiler are connected to the surface of the boiler; an exhaust device, wherein the exhaust device is installed at the end of the air guide pipe away from the boiler, and the surface of the exhaust device is connected to the end of the water guide pipe; wherein the exhaust device includes a filter assembly fixedly connected to the end of the air guide pipe, a servo motor is fixedly connected to the surface of the filter assembly, and a waste heat collection assembly is provided at the end of the filter assembly away from the air guide pipe, the surface of the waste heat collection assembly being connected to the end of the water guide pipe.

[0007] Preferably, the filter assembly includes a filter chamber fixedly connected to the end of the air guide pipe. A baffle ring is fixedly connected to the inner wall of the filter chamber. A filter layer is disposed below the baffle ring and is fixedly connected to the inner wall of the filter chamber. A rotating plate is disposed inside the filter layer. A rotating shaft is fixedly connected to the lower end of the rotating plate. The rotating shaft passes through to the outside of the filter layer and is fixedly connected to the output shaft of a servo motor. The servo motor drives the rotating shaft to run synchronously. At this time, the rotating shaft drives the rotating plate to rotate synchronously.

[0008] Preferably, the waste heat collection assembly includes a preheating chamber fixedly connected to the end of the filter chamber. The upper end of the preheating chamber is fixedly connected to an air outlet pipe communicating with the preheating chamber. The inner top wall and inner bottom wall of the preheating chamber are both fixedly connected to fixed plates. A second vent pipe is fixedly connected between the two fixed plates. When the high-temperature airflow is guided to the interior of the preheating chamber, the external water pipe will fill the interior of the preheating chamber with liquid and inject preheating liquid into the boiler through the water guide pipe.

[0009] Preferably, a rotating fan is fixedly connected to the upper end of the rotating plate, and the rotating fan extends above the baffle ring to guide airflow into the filter chamber.

[0010] Preferably, the rotating fan is fitted with vertical fan blades, which are located below the baffle ring. The baffle ring causes the flue gas to converge into the vertical fan blades, and when the vertical fan blades rotate, the impurities in the flue gas are thrown into the interior of the filter layer. Since the inner wall of the filter layer is pleated, the impurities in the flue gas are adsorbed by the pleats of the filter layer.

[0011] Preferably, the exterior of the second vent pipe is provided with a plurality of first vent pipes, which are arranged in a ring along the edge of the fixed plate. The high-temperature gas preheats the liquid inside the preheating chamber by passing through the second vent pipe and the plurality of first vent pipes. At the same time, the spiral shape of the first vent pipes extends the flow path of the high-temperature gas.

[0012] Preferably, a plurality of spiral plates are fixedly connected to the surface of the second vent pipe. The spiral plates are embedded in the surface of the first vent pipe, and the spiral plates increase the contact area for heat exchange and improve the working efficiency of heat exchange.

[0013] Preferably, annular baffles are provided on the outside of the plurality of spiral plates. The annular baffles are fixedly connected to the inner wall of the preheating chamber. The liquid inside the preheating chamber is separated by the annular baffles, which ensures the efficiency of heat exchange.

[0014] The beneficial effects of this utility model are:

[0015] 1. The exhaust mechanism for the heating boiler described above, by setting up a waste heat collection component, can play an auxiliary preheating role for the liquid inside the boiler under the action of the waste heat collection component. The device preheats the liquid inside the preheating chamber by passing high-temperature gas through the second vent pipe and multiple first vent pipes, which prolongs the gas heat exchange time. The spiral plate increases the contact area for heat exchange and preheats the water inside the boiler body, avoiding the waste of some of the heat energy generated inside the boiler body and improving the energy efficiency of the device.

[0016] 2. With the help of the filter components, the device can filter the flue gas discharged from the boiler. The device guides the airflow into the filter chamber by rotating the fan. When the vertical fan blades rotate, the impurities in the flue gas are thrown into the interior of the filter layer. Since the inner wall of the filter layer is pleated, the impurities in the flue gas are adsorbed by the pleats of the filter layer, reducing the discharge of exhaust gas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exhaust device structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the filter chamber of this utility model;

[0020] Figure 4 This is a partial exploded cross-sectional view of the filter assembly of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the preheating chamber of this utility model;

[0022] Figure 6 This is a partial cross-sectional view of the waste heat collection component of this utility model.

[0023] In the diagram: 1. Water pipe; 2. Air pipe; 3. Exhaust device; 31. Filter assembly; 311. Filter chamber; 312. Baffle ring; 313. Filter layer; 314. Rotating shaft; 315. Rotating fan; 316. Rotating plate; 317. Vertical fan blade; 32. Waste heat collection assembly; 321. Preheating chamber; 322. Fixed plate; 323. Ring baffle; 324. First vent pipe; 325. Spiral plate; 326. Air outlet pipe; 327. Second vent pipe; 33. Servo motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In practical implementation: such as Figure 1-6 As shown, the exhaust mechanism for a heating boiler includes: an air guide pipe 2 and a water guide pipe 1, the ends of the air guide pipe 2 and the water guide pipe 1 near the boiler being connected to the surface of the boiler; an exhaust device 3, the exhaust device 3 being installed at the end of the air guide pipe 2 away from the boiler, the surface of the exhaust device 3 being connected to the end of the water guide pipe 1; wherein, the exhaust device 3 includes a filter assembly 31 fixedly connected to the end of the air guide pipe 2, a servo motor 33 fixedly connected to the surface of the filter assembly 31, and a waste heat collection assembly 32 provided at the end of the filter assembly 31 away from the air guide pipe 2, the surface of the waste heat collection assembly 32 being connected to the end of the water guide pipe 1.

[0026] like Figures 1-4 As shown, the filter assembly 31 includes a filter chamber 311 fixedly connected to the end of the air duct 2. A baffle ring 312 is fixedly connected to the inner wall of the filter chamber 311. A filter layer 313 is disposed below the baffle ring 312. The filter layer 313 is fixedly connected to the inner wall of the filter chamber 311. A rotating plate 316 is disposed inside the filter layer 313. A rotating shaft 314 is fixedly connected to the lower end of the rotating plate 316. The rotating shaft 314 passes through to the outside of the filter layer 313 and is fixedly connected to the output shaft of the servo motor 33. A rotating fan 315 is fixedly connected to the upper end of the rotating plate 316. The rotating fan 315 extends above the baffle ring 312. A vertical fan blade 317 is sleeved on the outside of the rotating fan 315. The vertical fan blade 317 is located below the baffle ring 312.

[0027] When the device is in use, the servo motor 33 drives the rotating shaft 314 to run synchronously. At this time, the rotating shaft 314 drives the rotating plate 316 to rotate synchronously, which in turn drives the vertical fan blades 317 and the rotating fan 315 to rotate synchronously. The flue gas from the boiler combustion is guided into the filter chamber 311 by the rotating fan 315. Then, the flue gas is drawn into the vertical fan blades 317 by the baffle ring 312. When the vertical fan blades 317 rotate, the impurities in the flue gas are thrown into the filter layer 313. Since the inner wall of the filter layer 313 is pleated, the impurities in the flue gas are adsorbed by the pleats of the filter layer 313. While assisting in the exhaust of flue gas, it also assists in the filtration of dust and other impurities in the flue gas.

[0028] like Figure 1, Figure 2 , Figure 5 and Figure 6 As shown, the waste heat collection assembly 32 includes a preheating chamber 321 fixedly connected to the end of the filter chamber 311. An air outlet pipe 326 communicating with the preheating chamber 321 is fixedly connected to the upper end of the preheating chamber 321. Fixed plates 322 are fixedly connected to the inner top wall and inner bottom wall of the preheating chamber 321. A second vent pipe 327 is fixedly connected between the two fixed plates 322. Multiple first vent pipes 324 are provided outside the second vent pipe 327. The multiple first vent pipes 324 are distributed in a ring shape along the edge of the fixed plate 322. Multiple spiral plates 325 are fixedly connected to the surface of the second vent pipe 327. The spiral plates 325 are embedded in the surface of the first vent pipes 324. A ring baffle 323 is provided outside the multiple spiral plates 325. The ring baffle 323 is fixedly connected to the inner wall of the preheating chamber 321.

[0029] When the filter assembly 31 guides the high-temperature airflow into the preheating chamber 321, the external water pipe fills the preheating chamber 321 with liquid and injects the preheating liquid into the boiler through the water pipe 1. At this time, the high-temperature gas preheats the liquid inside the preheating chamber 321 through the second vent pipe 327 and multiple first vent pipes 324. Meanwhile, the spiral shape of the first vent pipes 324 extends the flow path of the high-temperature gas, thereby prolonging the heat exchange time. The spiral plate 325 increases the contact area for heat exchange, improving the efficiency of heat exchange. Furthermore, the heating of the liquid inside the preheating chamber 321 increases the molecular movement distance, thereby increasing the molecular gap. The heated liquid is located above the inside of the preheating chamber 321 and is injected into the boiler through the water pipe 1. The liquid inside the preheating chamber 321 is separated by the ring baffle 323, ensuring the efficiency of heat exchange.

[0030] In use, the servo motor 33 drives the rotating shaft 314 to run synchronously. The rotating shaft 314 drives the rotating plate 316 to rotate synchronously. In turn, the rotating plate 316 drives the vertical fan blade 317 and the rotating fan 315 to rotate synchronously. The flue gas is guided into the filter chamber 311 by the rotating fan 315. The flue gas converges into the vertical fan blade 317 through the baffle ring 312. When the vertical fan blade 317 rotates, impurities in the flue gas are thrown into the filter layer 313. Since the inner wall of the filter layer 313 is pleated, the impurities in the flue gas are adsorbed by the pleats of the filter layer 313. The high-temperature gas preheats the liquid inside the preheating chamber 321 through the second vent pipe 327 and multiple first vent pipes 324. Since the first vent pipe 324 is spiral, it extends the flow path of the high-temperature gas and prolongs the gas heat exchange time. The spiral plate 325 increases the contact area for heat exchange.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Exhaust mechanism for a heat boiler, characterized in that, include: The gas pipe (2) and the water pipe (1) are connected to the surface of the boiler at the ends near the boiler. An exhaust device (3) is installed at the end of the air guide pipe (2) away from the boiler, and the surface of the exhaust device (3) is connected to the end of the water guide pipe (1). The exhaust device (3) includes a filter assembly (31) fixedly connected to the end of the air guide pipe (2). A servo motor (33) is fixedly connected to the surface of the filter assembly (31). A waste heat collection assembly (32) is provided at the end of the filter assembly (31) away from the air guide pipe (2). The surface of the waste heat collection assembly (32) is connected to the end of the water guide pipe (1).

2. Exhaust mechanism for a heating boiler according to claim 1, characterized in that: The filter assembly (31) includes a filter chamber (311) fixedly connected to the end of the air duct (2). A baffle ring (312) is fixedly connected to the inner wall of the filter chamber (311). A filter layer (313) is provided below the baffle ring (312). The filter layer (313) is fixedly connected to the inner wall of the filter chamber (311). A rotating plate (316) is provided inside the filter layer (313). A rotating shaft (314) is fixedly connected to the lower end of the rotating plate (316). The rotating shaft (314) extends through to the outside of the filter layer (313) and is fixedly connected to the output shaft of the servo motor (33).

3. An exhaust mechanism for a heating boiler according to claim 2, characterized in that: The waste heat collection assembly (32) includes a preheating chamber (321) fixedly connected to the end of the filter chamber (311). The upper end of the preheating chamber (321) is fixedly connected to an air outlet pipe (326) communicating with the preheating chamber (321). The inner top wall and inner bottom wall of the preheating chamber (321) are both fixedly connected to a fixed plate (322), and a second air vent pipe (327) is fixedly connected between the two fixed plates (322).

4. An exhaust mechanism for a heating boiler according to claim 2, characterized in that: A rotating fan (315) is fixedly connected to the upper end of the rotating plate (316), and the rotating fan (315) extends above the baffle ring (312).

5. An exhaust mechanism for a heating boiler according to claim 4, characterized in that: The rotating fan (315) is fitted with vertical fan blades (317), which are located below the baffle ring (312).

6. An exhaust mechanism for a heating boiler according to claim 3, characterized in that: The second vent pipe (327) is provided with a plurality of first vent pipes (324) on its exterior, and the plurality of first vent pipes (324) are distributed in a ring along the edge of the fixed plate (322).

7. An exhaust mechanism for a heating boiler according to claim 6, characterized in that: The surface of the second vent pipe (327) is fixedly connected with a plurality of spiral plates (325), which are embedded in the surface of the first vent pipe (324).

8. An exhaust mechanism for a heating boiler according to claim 7, characterized in that: A ring baffle (323) is provided on the outside of the plurality of spiral plates (325), and the ring baffle (323) is fixedly connected to the inner wall of the preheating chamber (321).

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