Tail gas buffer tank with layered gas inlet structure

Abstract

The utility model relates to the technical field of tail gas buffer tanks, and discloses a tail gas buffer tank with a layered gas inlet structure, which comprises an outer buffer tank and an inner buffer tank fixed inside the outer buffer tank, and a tail gas ingress pipe is arranged at the top of the outer buffer tank. According to the device, high-heat tail gas is guided into the spiral buffer pipe through the tail gas guide-in pipe, long-stroke buffering is conducted on the tail gas in a spiral mode, a water source is injected into the inner wall between the buffer outer tank and the buffer inner tank, buffering and heat exchange are both considered, the tail gas is injected into the washing buffer inner cavity through the buffer flow guide pipe, and washing and cleaning of the tail gas are conducted; the circulating filtering piece can conduct impurity filtering and circulating flow guiding on a water source in the washing buffering inner cavity, the washing quality is improved, the device gives consideration to tail gas buffering and heat exchange cooling protection, the buffering and cooling effects are good, tail gas impurities can be washed and cleaned, washing water is stably filtered in a circulating mode, and the tail gas treatment quality is high.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas buffer tank technology, and in particular to an exhaust gas buffer tank with a layered air intake structure. Background Technology

[0002] In industrial production processes, such as chemical, metallurgical, and power generation, high-heat exhaust gases containing a large amount of heat are continuously generated. Direct emission of these exhaust gases not only damages subsequent treatment equipment (such as purification devices and emission pipelines) due to their high temperature, but also increases the risk of environmental thermal pollution due to undissipated heat. Simultaneously, unbuffered exhaust gases can easily generate instantaneous high pressure, impacting subsequent systems and affecting the stability of the overall treatment process. Therefore, an exhaust gas buffer tank with a stratified air intake structure is needed. Its core principle is to achieve orderly flow of high-heat exhaust gases within the tank through a stratified air intake design, slowing down the exhaust gas flow rate to achieve a buffering effect, avoiding instantaneous pressure shocks, and simultaneously achieving efficient cooling of the high-heat exhaust gases, thus providing favorable conditions for subsequent purification treatment and compliant emission.

[0003] In existing technologies, some exhaust gas buffer tanks typically employ simple buffer structures for protection. Their layered intake buffering capacity is relatively insufficient, failing to adequately buffer and protect against transient high pressure over long periods and slow down exhaust gas flow. Furthermore, during the flow guidance process, the high-temperature exhaust gas can easily damage the tank and pipelines, resulting in inadequate heat exchange and cooling capabilities. This makes it difficult to effectively balance exhaust gas buffering and heat exchange / cooling protection, leading to insufficient heat exchange efficiency. Moreover, exhaust gas often contains large particulate impurities, and even after layered buffering and heat exchange, the water washing and cleaning ability for these particulate impurities is insufficient. The tank's circulation filtration capacity is also inadequate, failing to effectively intercept fine dust, soluble salts, and other pollutants generated during exhaust gas washing. This results in poor exhaust gas washing quality, making it difficult to meet the continuous and efficient exhaust gas treatment requirements of industrial production. Therefore, we propose an exhaust gas buffer tank with a layered intake structure to address these issues. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an exhaust gas buffer tank with a layered air intake structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tail gas buffer tank with a layered air intake structure includes an outer buffer tank and an inner buffer tank fixed inside the outer buffer tank. The top of the outer buffer tank is provided with a tail gas inlet pipe.

[0007] The outer buffer tank is equipped with a spiral buffer tube that fits onto the outside of the inner buffer tank. The inner buffer tank has a water-washing buffer cavity inside. The bottom of the spiral buffer tube is equipped with a buffer guide tube, the top of which penetrates the inner buffer tank and extends into the water-washing buffer cavity. The bottom of the outer buffer tank is equipped with a tail gas discharge pipe, the top of which penetrates into the water-washing buffer cavity. The bottom of the outer buffer tank is equipped with a circulating filter element, which circulates between the water-washing buffer cavity and the outer buffer tank.

[0008] Preferably, the inner buffer tank is fixedly installed inside the outer buffer tank, the outer buffer tank and the inner buffer tank are on the same axis, a first temperature detector is provided in the cavity between the outer buffer tank and the inner buffer tank, and a second temperature detector is provided inside the water washing buffer cavity.

[0009] Preferably, the outer buffer tank is equipped with a switch controller, which is electrically connected to the first temperature detector, the second temperature detector and the circulating filter element respectively. The bottom of the outer buffer tank is equipped with an outer tank drain pipe, and the bottom of the water-washing buffer inner cavity is equipped with an inner tank drain pipe that passes through the inner buffer tank and the outer buffer tank in sequence.

[0010] Preferably, the spiral buffer tube is a spiral copper tube, the bottom of the exhaust gas inlet pipe extends into the interior of the buffer outer tank and is fixedly connected to an arc-shaped buffer tube, and the other end of the arc-shaped buffer tube is fixedly connected to the spiral buffer tube.

[0011] Preferably, the water-washing buffer cavity is located on the upper part of the inner side of the buffer tank, and the bottom of the water-washing buffer cavity is provided with a partition bearing plate that seals and separates the buffer tank. The buffer guide pipe, the exhaust pipe and the circulating filter all pass through the partition bearing plate and are connected to the water-washing buffer cavity.

[0012] Preferably, the top of the buffer guide pipe is provided with a water washing guide pipe, which is a 180-degree bend. The end of the water washing guide pipe away from the buffer guide pipe is located below the inner side of the water washing buffer cavity, and the top of the exhaust pipe is located above the inner side of the water washing buffer cavity.

[0013] Preferably, an adsorption filter plate is provided above the interior of the water washing buffer cavity, and the top of the adsorption filter plate is lower than the top of the exhaust pipe.

[0014] Preferably, the circulating filter includes an impurity filter box, a drain pipe, a guide pump body, an inlet return pipe, and a reciprocating circulation pipe. The impurity filter box and the guide pump body are both fixed to the bottom of the outer buffer tank. The drain pipe is connected to the bottom of the inner cavity of the water washing buffer. The bottom of the drain pipe passes through the outer buffer tank and is connected to the impurity filter box. The output end of the guide pump body is connected to the drain pipe. The two ends of the inlet return pipe are connected to the impurity filter box and the outer buffer tank. The reciprocating circulation pipe is connected between the inner cavity of the water washing buffer and the outer buffer tank. The impurity filter box is equipped with an impurity filter plate inside.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. This exhaust gas buffer tank with a layered air intake structure has an inner buffer tank fixed inside the outer buffer tank, and a spiral buffer tube is installed between the inner and outer buffer tanks. High-heat exhaust gas is introduced into the spiral buffer tube through the exhaust gas inlet pipe, and the exhaust gas is buffered in a spiral shape for a long stroke, which greatly improves the buffering and protection effect. The inner buffer tank has a water washing buffer cavity inside, and water is injected into the inner wall between the outer and inner buffer tanks. The spiral buffer tube plays a role in heat exchange and cooling while buffering. After the exhaust gas flows through the buffer guide pipe from the spiral buffer tube, it is guided to the water washing buffer cavity. The water source in the water washing buffer cavity can quickly wash and clean the dirt and impurities in the exhaust gas. Finally, it is discharged through the exhaust gas outlet pipe, completing the water washing and cleaning. The device takes into account both exhaust gas buffering and heat exchange and cooling protection, with good buffering and cooling effects, and can wash and clean the exhaust gas impurities, resulting in high exhaust gas treatment quality.

[0017] 2. This tail gas buffer tank with a layered air intake structure, through the circulation filter element installed at the bottom of the outer buffer tank, can circulate and guide the water source in the inner cavity of the water washing buffer and the inner cavity of the outer buffer tank. During the circulation process, impurities in the water source in the inner cavity of the water washing buffer are filtered and screened out, keeping the water source clean and improving the washing quality. The water level in the inner cavity of the water washing buffer and the inner cavity of the outer buffer tank are kept consistent, which can stably carry out the circulation and guidance operation, making the water washing water circulation and filtration stable, the tail gas treatment quality high, and meeting the needs of continuous and efficient tail gas treatment in industrial production. Attached Figure Description

[0018] Figure 1 This utility model provides a frontal perspective three-dimensional schematic diagram of an exhaust gas buffer tank with a layered air intake structure;

[0019] Figure 2 This utility model presents a front view sectional perspective of a tail gas buffer tank with a layered air intake structure.

[0020] Figure 3This utility model presents a top-view cross-sectional three-dimensional schematic diagram of an exhaust gas buffer tank with a layered air intake structure.

[0021] Figure 4 This is a three-dimensional front view of the buffer outer tank of this utility model after it has been removed;

[0022] Figure 5 This is a three-dimensional view of the buffer outer tank of this utility model, showing the effect of eliminating the backward tilt.

[0023] Figure 6 This is a three-dimensional cross-sectional view of the buffer outer tank after it has been removed.

[0024] In the diagram: 1. Outer buffer tank; 2. Inner buffer tank; 201. First temperature detector; 202. Second temperature detector; 203. Switch controller; 204. Outer tank drain pipe; 205. Inner tank drain pipe; 3. Exhaust gas inlet pipe; 301. Arc-shaped buffer pipe; 4. Spiral buffer pipe; 5. Water-washing buffer cavity; 501. Separating support plate; 6. Buffer guide pipe; 601. Water-washing guide pipe; 7. Exhaust gas discharge pipe; 8. Circulating filter element; 801. Impurity filter box; 802. Drain pipe; 803. Guide pump body; 804. Inlet return pipe; 805. Circulating reciprocating pipe; 806. Impurity filter plate; 9. Adsorption filter plate. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Please see Figures 1-6 A tail gas buffer tank with a layered air intake structure includes an outer buffer tank 1 and an inner buffer tank 2 fixed inside the outer buffer tank 1. The top of the outer buffer tank 1 is provided with a tail gas inlet pipe 3.

[0028] The outer buffer tank 1 is equipped with a spiral buffer tube 4 that is sleeved on the outside of the inner buffer tank 2. The inner buffer tank 2 is equipped with a water-washing buffer cavity 5. The bottom of the spiral buffer tube 4 is equipped with a buffer guide tube 6. The top of the buffer guide tube 6 passes through the inner buffer tank 2 and extends into the water-washing buffer cavity 5. The bottom of the outer buffer tank 1 is equipped with a tail gas discharge pipe 7. The top of the tail gas discharge pipe 7 passes through the water-washing buffer cavity 5. The bottom of the outer buffer tank 1 is equipped with a circulation filter element 8. The circulation filter element 8 circulates between the water-washing buffer cavity 5 and the outer buffer tank 1.

[0029] The beneficial effects that this plan aims to achieve are:

[0030] By installing and fixing an inner buffer tank 2 inside the outer buffer tank 1, and installing a spiral buffer tube 4 between the inner buffer tank 2 and the outer buffer tank 1, the high-heat exhaust gas is introduced into the spiral buffer tube 4 through the exhaust gas inlet pipe 3, and the exhaust gas is buffered in a spiral shape for a long stroke, which greatly improves the buffer protection effect. The inner buffer tank 2 is provided with a water washing buffer cavity 5, and water is injected into the inner wall between the outer buffer tank 1 and the inner buffer tank 2. The spiral buffer tube 4 plays a role in heat exchange and cooling while buffering. After the exhaust gas flows through the buffer guide pipe 6 from the spiral buffer tube 4, it is guided to the water washing buffer cavity 5. The water source in the water washing buffer cavity 5 can quickly wash and clean the dirt and impurities remaining in the exhaust gas. Finally, it is discharged through the exhaust gas outlet pipe 7, completing the water washing and cleaning.

[0031] The bottom of the outer buffer tank 1 is equipped with a circulating filter 8, which can circulate and guide the water source in the inner cavity 5 of the water washing buffer and the inner cavity of the outer buffer tank 1. During the circulation process, impurities in the water source in the inner cavity 5 of the water washing buffer are filtered and screened out, keeping the water source clean and improving the washing quality. The water level in the inner cavity 5 of the water washing buffer and the inner cavity of the outer buffer tank 1 are kept consistent, and the circulation and guidance operation can be carried out stably. This device takes into account both tail gas buffering and heat exchange and cooling protection, with good buffering and cooling effects. It can also clean the tail gas impurities with water washing, and the water washing water is circulated and filtered stably, resulting in high tail gas treatment quality.

[0032] Exhaust gas treatment: High-heat exhaust gas is first introduced into the spiral buffer tube 4 through the exhaust gas inlet pipe 3, where it undergoes long-stroke buffering in a spiral shape. At the same time, the spiral buffer tube 4 is located inside the buffer outer tank 1, which is filled with water. The exhaust gas can be buffered and cooled down in the spiral buffer tube 4. The long spiral stroke improves the buffering and heat exchange effect of the exhaust gas. After buffering and heat exchange, the exhaust gas is washed by water through the water washing buffer inner cavity 5. Finally, the exhaust gas is discharged through the exhaust gas outlet pipe 7. This process facilitates instantaneous high-pressure buffering, high-heat heat exchange and cooling, and water washing of exhaust gas impurities, thus improving the quality of exhaust gas treatment.

[0033] Furthermore, the inner buffer tank 2 is fixedly installed inside the outer buffer tank 1. The outer buffer tank 1 and the inner buffer tank 2 are on the same axis. A first temperature detector 201 is provided in the cavity between the outer buffer tank 1 and the inner buffer tank 2, and a second temperature detector 202 is provided inside the water washing inner cavity 5.

[0034] Specifically, the inner buffer tank 2 is fixedly installed inside the outer buffer tank 1, providing good layered buffering and heat exchange protection. A first temperature detector 201 is installed in the cavity between the outer buffer tank 1 and the inner buffer tank 2, and a second temperature detector 202 is installed inside the water washing buffer cavity 5. Water can be drained or replaced according to the temperature change of the first temperature detector 201 or the second temperature detector 202. When the water source is too hot, water can be drained and replaced.

[0035] Furthermore, the outer buffer tank 1 is equipped with a switch controller 203, which is electrically connected to the first temperature detector 201, the second temperature detector 202 and the circulating filter element 8 respectively. The bottom of the outer buffer tank 1 is equipped with an outer tank drain pipe 204, and the bottom of the water washing buffer inner cavity 5 is equipped with an inner tank drain pipe 205 that passes through the inner buffer tank 2 and the outer buffer tank 1 in sequence.

[0036] Specifically, the outer buffer tank 1 is equipped with a switch controller 203, which can control the switching of the first temperature detector 201, the second temperature detector 202 and the circulating filter 8. The operation is convenient. The outer tank drain pipe 204 can fill or drain water in the inner cavity of the outer buffer tank 1, and the inner tank drain pipe 205 can fill or drain water in the inner cavity of the water washing buffer 5. The flow guide is convenient and the water temperature can be observed at any time during heat exchange. If the water temperature is too high, the water source can be replaced.

[0037] Furthermore, the spiral buffer tube 4 is a spiral copper tube, and the bottom of the exhaust gas inlet pipe 3 extends into the interior of the buffer outer tank 1 and is fixedly connected to an arc-shaped buffer tube 301. The other end of the arc-shaped buffer tube 301 is fixedly connected to the spiral buffer tube 4.

[0038] Specifically, the spiral buffer tube 4 is a spiral copper tube with good heat conduction, which facilitates heat exchange protection when exchanging heat with high-heat exhaust gas. The bottom of the exhaust gas inlet pipe 3 is equipped with an arc-shaped buffer tube 301, which is a high-temperature resistant tube body. It can assist in guiding and buffering the high-heat and high-pressure exhaust gas, playing a buffer protection role, and is not easy to damage the spiral buffer tube 4, resulting in good operating performance.

[0039] Furthermore, the water-washing buffer cavity 5 is located on the upper part of the inner side of the buffer inner tank 2. The bottom of the water-washing buffer cavity 5 is provided with a partition support plate 501 that seals and separates the buffer inner tank 2. The buffer guide pipe 6, the exhaust pipe 7 and the circulating filter 8 all pass through the partition support plate 501 and are connected to the water-washing buffer cavity 5.

[0040] Specifically, the water-washing buffer cavity 5 is located on the upper part of the inner side of the buffer tank 2, which serves as a water storage function to facilitate the subsequent water washing treatment of the exhaust gas. In addition, the setting of the partition bearing plate 501 can divide the upper part of the inner side of the buffer tank 2 into the water-washing buffer cavity 5, which is stable and adaptable.

[0041] Furthermore, a water washing guide pipe 601 is provided at the top of the buffer guide pipe 6. The water washing guide pipe 601 is a 180-degree bend. The end of the water washing guide pipe 601 away from the buffer guide pipe 6 is located below the inner side of the water washing buffer cavity 5, and the top of the exhaust gas discharge pipe 7 is located above the inner side of the water washing buffer cavity 5.

[0042] Specifically, a water washing guide pipe 601 is provided at the top of the buffer guide pipe 6. The water washing guide pipe 601 is bent and correspondingly arranged inside the water washing buffer cavity 5. The top of the water washing guide pipe 601 is higher than the water surface to prevent water from flowing back into the buffer guide pipe 6. The bottom of the water washing guide pipe 601 is located inside the water surface, which facilitates the direct discharge of exhaust gas into the water surface to complete the water washing operation.

[0043] Furthermore, an adsorption filter plate 9 is provided above the interior of the water washing buffer cavity 5, and the top of the adsorption filter plate 9 is lower than the top of the exhaust pipe 7.

[0044] Specifically, an adsorption filter plate 9 is provided above the inner cavity of the water washing buffer 5. After the exhaust gas is discharged through the buffer guide pipe 6 for water washing, it is then adsorbed and filtered by the adsorption filter plate 9, and then discharged through the exhaust gas discharge pipe 7. The flow is stable.

[0045] Furthermore, the circulating filter element 8 includes an impurity filter box 801, a drain pipe 802, a guide pump body 803, an inlet return pipe 804, and a circulating reciprocating pipe 805. The impurity filter box 801 and the guide pump body 803 are both fixed to the bottom of the buffer outer tank 1. The drain pipe 802 is connected to the bottom of the water washing buffer inner cavity 5. The bottom of the drain pipe 802 passes through the buffer outer tank 1 and is connected to the impurity filter box 801. The output end of the guide pump body 803 is connected to the drain pipe 802. The two ends of the inlet return pipe 804 are connected to the impurity filter box 801 and the buffer outer tank 1. The circulating reciprocating pipe 805 is connected between the water washing buffer inner cavity 5 and the buffer outer tank 1. The impurity filter box 801 is provided with an impurity filter plate 806 inside.

[0046] Specifically, the impurity filter box 801 is installed and fixed at the bottom of the buffer outer tank 1. It is equipped with an impurity filter plate 806 inside, which plays a role in impurity filtration. Since the impurity filter box 801 is located outside the tank, it is convenient to replace the filter plate. The drain pipe 802 and the inlet return pipe 804 are connected to the top two sides of the impurity filter box 801. The drain pipe 802, together with the guide pump body 803, can guide the water source containing impurities in the water washing buffer inner cavity 5 to the impurity filter box 801. After being filtered by the impurity filter plate 806, it is then guided back into the inner cavity of the buffer outer tank 1 by the inlet return pipe 804. When the water level in the buffer outer tank 1 is high, the water source in the buffer outer tank 1 can be guided back into the water washing buffer inner cavity 5 by the circulation reciprocating pipe 805, which facilitates the circulation, filtration and guidance of the washing water, keeps the washing water clean, and maintains a good washing effect.

[0047] How to use and how to work this device:

[0048] A buffer inner tank 2 is installed and fixed inside the buffer outer tank 1. A spiral buffer tube 4 is installed between the buffer inner tank 2 and the buffer outer tank 1 in a spiral configuration. High-heat exhaust gas is introduced into the spiral buffer tube 4 through the exhaust gas inlet pipe 3. The spiral configuration of the spiral buffer tube 4 greatly increases the exhaust gas flow path and provides good buffering and protection for the exhaust gas. The buffer inner tank 2 has a water washing buffer cavity 5 inside, which is filled with water. Water is also injected into the inner wall between the buffer outer tank 1 and the buffer inner tank 2. This can play a role in heat exchange and cooling of the spiral buffer tube 4, so that the high-heat exhaust gas flowing through the spiral buffer tube 4 can be efficiently buffered and cooled. This combination of exhaust gas buffering and heat exchange and cooling protection provides good buffering and cooling effects.

[0049] The bottom of the spiral buffer tube 4 is provided with a buffer guide tube 6, and the top of the buffer guide tube 6 extends into the interior of the water washing buffer cavity 5. When the buffer guide tube 6 introduces the exhaust gas into the water washing buffer cavity 5, the high-heat exhaust gas can be quickly washed by the water source in the water washing buffer cavity 5 to quickly wash and clean the dirt and impurities remaining in the exhaust gas. Then, the cleaned exhaust gas is discharged by the exhaust gas discharge pipe 7 to complete the exhaust gas washing operation. The water washing and cleaning is convenient.

[0050] The bottom of the outer buffer tank 1 is equipped with a circulating filter element 8, which can circulate and guide the water source in the inner cavity 5 of the water washing buffer and the inner cavity of the outer buffer tank 1. During the circulation process, impurities after water washing in the inner cavity 5 of the water washing buffer are filtered and screened out, keeping the water source clean and improving the water washing effect. The water level in the inner cavity 5 of the water washing buffer and the inner cavity of the outer buffer tank 1 is kept consistent, which can stably and evenly carry out water washing and guiding operations. The circulation filtration effect is excellent, which meets the needs of continuous and efficient treatment of exhaust gas in industrial production. The device takes into account both exhaust gas buffering and heat exchange and cooling protection. The buffering and cooling effects are good, and the exhaust gas impurities can be cleaned by water washing. The water washing water is circulated and filtered stably, resulting in high exhaust gas treatment quality.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A tail gas buffer tank with a layered intake structure, comprising an outer buffer tank (1) and an inner buffer tank (2) fixed inside the outer buffer tank (1), characterized in that: The top of the buffer outer tank (1) is provided with an exhaust gas inlet pipe (3); The outer buffer tank (1) is provided with a spiral buffer tube (4) sleeved on the outside of the inner buffer tank (2). The inner buffer tank (2) is provided with a water-washing buffer cavity (5). The bottom of the spiral buffer tube (4) is provided with a buffer guide tube (6). The top of the buffer guide tube (6) passes through the inner buffer tank (2) and extends into the water-washing buffer cavity (5). The bottom of the outer buffer tank (1) is provided with a tail gas discharge pipe (7). The top of the tail gas discharge pipe (7) passes through the water-washing buffer cavity (5). The bottom of the outer buffer tank (1) is provided with a circulating filter element (8). The circulating filter element (8) circulates between the water-washing buffer cavity (5) and the outer buffer tank (1).

2. The exhaust gas buffer tank with a layered air intake structure according to claim 1, characterized in that: The inner buffer tank (2) is fixedly installed inside the outer buffer tank (1). The outer buffer tank (1) and the inner buffer tank (2) are on the same axis. A first temperature detector (201) is provided in the cavity between the outer buffer tank (1) and the inner buffer tank (2). A second temperature detector (202) is provided inside the water washing buffer cavity (5).

3. The exhaust gas buffer tank with a layered air intake structure according to claim 2, characterized in that: The outer buffer tank (1) is equipped with a switch controller (203), which is electrically connected to the first temperature detector (201), the second temperature detector (202) and the circulating filter (8) respectively. The bottom of the outer buffer tank (1) is equipped with an outer tank drain pipe (204), and the bottom of the water washing buffer inner cavity (5) is equipped with an inner tank drain pipe (205) that passes through the inner buffer tank (2) and the outer buffer tank (1) in sequence.

4. The exhaust gas buffer tank with a layered air intake structure according to claim 1, characterized in that: The spiral buffer tube (4) is a spiral copper tube. The bottom of the exhaust gas inlet pipe (3) extends into the interior of the buffer outer tank (1) and is fixedly connected to an arc-shaped buffer tube (301). The other end of the arc-shaped buffer tube (301) is fixedly connected to the spiral buffer tube (4).

5. The exhaust gas buffer tank with a layered air intake structure according to claim 1, characterized in that: The water-washing buffer cavity (5) is located on the upper part of the inner side of the buffer tank (2). The bottom of the water-washing buffer cavity (5) is provided with a partition bearing plate (501) that seals and separates the buffer tank (2). The buffer guide pipe (6), the exhaust pipe (7) and the circulating filter (8) all pass through the partition bearing plate (501) and are connected to the water-washing buffer cavity (5).

6. The exhaust gas buffer tank with a layered air intake structure according to claim 1, characterized in that: The top of the buffer guide pipe (6) is provided with a water washing guide pipe (601), which is a 180-degree bend. The end of the water washing guide pipe (601) away from the buffer guide pipe (6) is located below the inner side of the water washing buffer cavity (5), and the top of the exhaust pipe (7) is located above the inner side of the water washing buffer cavity (5).

7. The exhaust gas buffer tank with a layered air intake structure according to claim 1, characterized in that: An adsorption filter plate (9) is provided above the interior of the water washing buffer cavity (5), and the top of the adsorption filter plate (9) is lower than the top of the exhaust pipe (7).

8. The exhaust gas buffer tank with a layered air intake structure according to claim 1, characterized in that: The circulating filter element (8) includes an impurity filter box (801), a drain pipe (802), a guide pump body (803), an inlet return pipe (804), and a circulating reciprocating pipe (805). The impurity filter box (801) and the guide pump body (803) are both fixed to the bottom of the buffer outer tank (1). The drain pipe (802) is connected to the bottom of the water washing buffer inner cavity (5). The bottom of the drain pipe (802) passes through the buffer outer tank (1) and is connected to the impurity filter box (801). The output end of the guide pump body (803) is connected to the drain pipe (802). The two ends of the inlet return pipe (804) are connected to the impurity filter box (801) and the buffer outer tank (1). The circulating reciprocating pipe (805) is connected between the water washing buffer inner cavity (5) and the buffer outer tank (1). The impurity filter box (801) is provided with an impurity filter plate (806) inside.

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