Efficient atomic fluorescence generation device

Abstract

The utility model discloses an efficient atomic fluorescence generating device, and relates to the technical field of atomic fluorescence generating devices. The upper end of the side wall of the mixing cylinder is fixedly connected with an eduction pipe, a breather pipe and a connecting pipe are sequentially arranged below the eduction pipe and communicate with the mixing cylinder, the end, away from the mixing cylinder, of the eduction pipe is connected with combustion equipment, and the end, away from the mixing cylinder, of the breather pipe is connected with a fuel gas supply device. An atomization device is arranged on the side, away from the mixing barrel, of the connecting pipe. According to the device, the atomization device is arranged at the position of the connecting pipe, when the device is used, a sample is atomized by utilizing the atomization device, and the atomized sample directly enters the mixing cylinder, so that the problem that the sample is easily attached to the inner side wall of the gas guide pipe when an atomization machine is used in a traditional device is effectively solved, and the problem of waste of the sample is effectively avoided. And meanwhile, a mixing auxiliary mechanism in the mixing cylinder is used for fully mixing the fuel gas and the atomized sample, so that an auxiliary mixing effect is further achieved, and the mixing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of atomic fluorescence generating devices, in particular to a high-efficiency atomic fluorescence generating device. Background Art

[0002] An atomic fluorescence generator (AFSG) is a high-precision analytical instrument based on the principle of atomic fluorescence spectroscopy. It is widely used in a variety of fields, including environmental monitoring, food hygiene, and geological exploration. Its core principle is to stimulate the atoms of the element being measured with a light source of a specific wavelength, causing them to produce a specific fluorescence. The fluorescence intensity is then used to analyze the content of the element being measured.

[0003] In existing atomic fluorescence generation devices, sample atomization is a key step. Typically, this process is achieved through an atomizer, which converts the liquid sample into fine droplets, which are then introduced through a conduit into a mixing cylinder to mix with the combustion gas. While this design achieves sample atomization and mixing to a certain extent, it has significant drawbacks.

[0004] Specifically, after being atomized by the nebulizer, the sample must pass through a conduit before entering the mixing cylinder. During this process, a large amount of the atomized sample gas often adheres to the inner wall of the airway tube, which not only wastes sample but can also lead to inaccurate analysis results. Furthermore, existing mixing cylinders generally rely solely on the free mixing of the introduced gas within the mixing cylinder, lacking an effective mixing mechanism. This results in low mixing efficiency, further affecting the accuracy and efficiency of the analysis.

[0005] Therefore, the present application proposes an efficient atomic fluorescence generating device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an efficient atomic fluorescence generating device, which solves the technical problems raised in the background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an efficient atomic fluorescence generating device, comprising a mixing cylinder, wherein an outlet pipe is fixedly connected to the upper end of the side wall of the mixing cylinder, a vent pipe and a connecting pipe are sequentially arranged below the outlet pipe, the vent pipe and the connecting pipe are both connected to the mixing cylinder, the end of the outlet pipe away from the mixing cylinder is connected to a combustion device, the end of the vent pipe away from the mixing cylinder is connected to a gas supply device, and an atomizing device is arranged on the side of the connecting pipe away from the mixing cylinder;

[0008] The atomization device includes an atomization outer tube and a sample supply tube. The right end of the atomization outer tube is arranged in a conical structure, and the right end of the atomization outer tube is arranged to be open. A partition plate is fixedly connected to the inner side wall of the atomization outer tube, and a limiting hole is provided on the partition plate. The right end of the atomization outer tube extends into the connecting tube. The right end of the sample supply tube is fixedly connected to a sample supply capillary, and the sample supply capillary is communicated with the sample supply tube. The right end of the sample supply tube extends into the atomization outer tube, the right end of the sample supply capillary passes through the limiting hole and extends into the atomization outer tube, and the right end of the sample supply capillary is close to the right port of the atomization outer tube. The left end of the sample supply tube is connected to the sample supply device. An atomization air blowing pipe is fixedly connected to the side wall of the atomization outer tube, and the atomization air blowing pipe is communicated with the atomization outer tube.

[0009] Preferably, a mixing auxiliary mechanism is provided on the inner side of the mixing cylinder, and the mixing auxiliary mechanism is located above the connection between the vent pipe and the mixing cylinder. The mixing auxiliary mechanism includes an auxiliary cylinder, and the auxiliary cylinder is hollow cone-shaped. The inner diameter of the upper port of the auxiliary cylinder is smaller than the inner diameter of the lower port of the auxiliary cylinder. The auxiliary cylinder is fixed on the inner wall of the mixing cylinder, and the upper end of the auxiliary cylinder is fixedly connected to a horizontal plate, and the upper end of the horizontal plate is rotatably connected to a rotating rod, and a plurality of fan blades are fixedly connected to the side wall of the rotating rod.

[0010] Preferably, the end of the atomizing air blowing pipe away from the atomizing outer pipe is tilted toward the side away from the mixing barrel, and the outside of the atomizing air blowing pipe is connected to a combustion-supporting gas supply device.

[0011] Preferably, an anti-slip raised ring 1 and an anti-slip raised ring 3 are fixedly connected to the outer wall of the atomizing outer tube, an anti-slip raised ring 2 is fixedly connected to the outer wall of the sample supply tube, and an anti-slip raised ring 4 is fixedly connected to the outer wall of the connecting tube, the anti-slip raised ring 1 is close to the sample supply tube, the anti-slip raised ring 3 is close to the connecting tube, a connecting rubber sleeve 1 is sleeved at the connection between the sample supply tube and the atomizing outer tube, the anti-slip raised ring 1 and the anti-slip raised ring 2 are both located on the inner side of the connecting rubber sleeve 1, a connecting rubber sleeve 2 is sleeved at the connection between the connecting tube and the atomizing outer tube, and the anti-slip raised ring 2 and the anti-slip raised ring 3 are both located on the inner side of the connecting rubber sleeve 2.

[0012] Preferably, a sealing gasket 2 is provided on the outer wall of the sample supply tube, and the outer wall of the sealing gasket 2 abuts against the inner wall of the atomizing outer tube. A sealing gasket 1 is provided on the inner wall of the connecting tube, and the inner wall of the sealing gasket 1 abuts against the outer wall of the atomizing outer tube. A sealing ring is fixedly connected to the inner wall of the limiting hole, and the inner wall of the sealing ring abuts against the outer wall of the sample supply capillary.

[0013] Preferably, a water seal cylinder is provided on the outside of the mixing cylinder, and a connecting pipe is fixedly connected to the lower end of the side wall of the mixing cylinder, and the connecting pipe is connected to the mixing cylinder. The end of the connecting pipe away from the mixing cylinder passes through the side wall of the water seal cylinder and is connected to the water seal cylinder. A sewage pipe is provided below the water seal cylinder, and the upper end of the sewage pipe passes through the lower side wall of the water seal cylinder and extends to the inner side of the water seal cylinder. The upper port position of the sewage pipe is higher than the connection between the connecting pipe and the water seal cylinder.

[0014] Compared with related technologies, the efficient atomic fluorescence generating device provided by the present invention has the following beneficial effects:

[0015] 1. The utility model provides a high-efficiency atomic fluorescence generating device. In this device, an atomizing device is provided at the position of the connecting tube. The atomizing device is provided with an atomizing outer tube, a sample supply capillary tube and a sample supply tube. When in use, the combustion-supporting gas supply device introduces the combustion-supporting gas into the atomizing outer tube through the atomizing air blow pipe. At the same time, the sample supply device introduces the sample from the sample supply tube and the sample capillary tube to the right port position of the atomizing outer tube, and uses the high-pressure combustion-supporting gas to perform an atomization operation on the ejected sample. The atomized sample directly enters the mixing barrel, thereby effectively solving the problem that the sample is easily attached to the inner wall of the air guide tube when using the atomizer in the traditional device, effectively avoiding the problem of sample waste, and ensuring the accuracy of subsequent analysis results.

[0016] 2. The utility model provides a high-efficiency atomic fluorescence generating device. In this device, a mixing auxiliary mechanism is provided in a mixing cylinder, and an auxiliary cylinder is provided in the mixing auxiliary mechanism. The hollow frustum-shaped auxiliary cylinder is used to gather the gas introduced through the vent pipe and the atomized sample, and then eject them from the upper port of the auxiliary cylinder. As the gas is ejected from the upper port of the auxiliary cylinder at high speed, a number of fan blades are driven to rotate. The rotating fan blades are used to interfere with the airflow, thereby further playing a role in assisting mixing, improving mixing efficiency, and thus improving the accuracy and efficiency of analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

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

[0019] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the atomizing device of the present utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;

[0021] Figure 5 for Figure 4 A partial enlarged view of the middle part;

[0022] Figure 6 for Figure 4 A partial enlarged view of point B in the middle;

[0023] Figure 7 for Figure 4 A partial enlarged view of point C in the middle;

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the mixing auxiliary mechanism of the present utility model.

[0025] In the figure: 1. Mixing cylinder; 2. Vent pipe; 3. Connecting pipe; 4. Atomizing device; 5. Delivering pipe; 6. Connecting pipe; 7. Water seal cylinder; 8. Drain pipe; 9. Mixing auxiliary mechanism; 10. Auxiliary cylinder; 11. Horizontal plate; 12. Rotating rod; 13. Fan blade; 14. Atomizing outer tube; 15. Atomizing air blowing tube; 16. Sample supply capillary; 17. Sample supply tube; 18. Anti-skid raised ring 1; 19. Anti-skid raised ring 2; 20. Connecting rubber sleeve 1; 21. Partition plate; 22. Limiting hole; 23. Sealing ring; 24. Anti-skid raised ring 3; 25. Anti-skid raised ring 4; 26. Connecting rubber sleeve 2; 27. Sealing gasket 1; 28. Sealing gasket 2. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-8 The utility model provides a technical solution: an efficient atomic fluorescence generating device, comprising a mixing cylinder 1, an outlet pipe 5 is fixedly connected to the upper end of the side wall of the mixing cylinder 1, a vent pipe 2 and a connecting pipe 3 are sequentially arranged below the outlet pipe 5, the vent pipe 2 and the connecting pipe 3 are both connected to the mixing cylinder 1, the end of the outlet pipe 5 away from the mixing cylinder 1 is connected to the combustion equipment, the end of the vent pipe 2 away from the mixing cylinder 1 is connected to the gas supply device, and the side of the connecting pipe 3 away from the mixing cylinder 1 is provided with an atomizing device 4;

[0028] The atomizing device 4 includes an atomizing outer tube 14 and a sample supply tube 17. The right end of the atomizing outer tube 14 is configured in a conical structure, and the right end of the atomizing outer tube 14 is configured to be open. A partition plate 21 is fixedly connected to the inner side wall of the atomizing outer tube 14, and a limiting hole 22 is provided on the partition plate 21. The right end of the atomizing outer tube 14 extends into the connecting tube 3. The right end of the sample supply tube 17 is fixedly connected to a sample supply capillary 16. The sample supply capillary 16 is connected to the sample supply tube 17. The right end of the sample supply tube 17 extends into the atomizing outer tube 14. The right end of the sample supply capillary 16 passes through the limiting hole 22 and extends into the atomizing outer tube 14, and the right end of the sample supply capillary 16 is close to the right end of the atomizing outer tube 14. Mouth, the left end of the sample supply pipe 17 is connected to the sample supply equipment, and the side wall of the atomization outer tube 14 is fixedly connected with an atomization air blowing pipe 15, which is communicated with the atomization outer tube 14. When in use, the outside of the vent pipe 2 is connected to the gas supply device, the sample supply pipe 17 in the atomization device 4 is externally connected to the sample supply equipment, and the export pipe 5 is externally connected to the combustion equipment. The sample is introduced into the right side port position of the atomization outer tube 14 through the sample supply pipe 17 and the sample supply capillary 16 by the sample supply equipment, and the combustion-supporting gas supply equipment is used to introduce the combustion-supporting gas into the atomization outer tube 14 through the atomization air blowing pipe 15. When the sample is ejected from the right side port of the atomization outer tube 14, the sample is driven to eject, and the liquid sample is atomized under the action of the high-speed airflow;

[0029] The inner side of the mixing cylinder 1 is provided with a mixing auxiliary mechanism 9, which is located above the connection between the vent pipe 2 and the mixing cylinder 1. The mixing auxiliary mechanism 9 includes an auxiliary cylinder 10, which is in the shape of a hollow cone. The inner diameter of the upper port of the auxiliary cylinder 10 is smaller than the inner diameter of the lower port of the auxiliary cylinder 10. The auxiliary cylinder 10 is fixed to the inner wall of the mixing cylinder 1. The upper end of the auxiliary cylinder 10 is fixedly connected to a horizontal plate 11, and the upper end of the horizontal plate 11 is rotatably connected to a rotating rod 12. A number of fan blades 13 are fixedly connected to the side wall of the rotating rod 12. The sample after atomization is The sample enters the mixing cylinder 1; at the same time, the gas supply device introduces gas into the mixing cylinder 1 through the vent pipe 2. The gas and the atomized sample are mixed in the mixing cylinder 1. The hollow frustum-shaped auxiliary cylinder 10 is used to gather the gas introduced through the vent pipe 2 and the atomized sample, and then eject them from the upper port of the auxiliary cylinder 10. As the gas is ejected from the upper port of the auxiliary cylinder 10 at high speed, it drives a number of fan blades 13 to rotate. The rotating fan blades 13 are used to interfere with the airflow, thereby further playing a role in assisting mixing and improving mixing efficiency.

[0030] The end of the atomizing air blowing pipe 15 away from the atomizing outer pipe 14 is tilted toward the side away from the mixing barrel 1. The atomizing air blowing pipe 15 is externally connected to a combustion-supporting gas supply device. The tilted atomizing air blowing pipe 15 can better ensure the flow rate of the combustion-supporting gas when the combustion-supporting gas supply device is supplying the combustion-supporting gas, thereby ensuring the atomization effect of subsequent samples.

[0031] The outer wall of the atomizing outer tube 14 is fixedly connected with an anti-slip raised ring 18 and an anti-slip raised ring 3 24, the outer wall of the sample supply tube 17 is fixedly connected with an anti-slip raised ring 2 19, and the outer wall of the connecting tube 3 is fixedly connected with an anti-slip raised ring 4 25. The anti-slip raised ring 18 is close to the sample supply tube 17, and the anti-slip raised ring 3 24 is close to the connecting tube 3. The connection between the sample supply tube 17 and the atomizing outer tube 14 is provided with a connecting rubber sleeve 1 20. The anti-slip raised ring 18 and the anti-slip raised ring 2 19 are both located in the connecting rubber sleeve. On the inner side of the connecting rubber sleeve 20, the connection between the connecting tube 3 and the atomizing outer tube 14 is sleeved with a connecting rubber sleeve 26. The anti-slip raised ring 29 and the anti-slip raised ring 3 are both located on the inner side of the connecting rubber sleeve 26. The connection between the sample supply tube 17 and the atomizing outer tube 14 is achieved under the action of the connecting rubber sleeve 20, the anti-slip raised ring 18 and the anti-slip raised ring 29. The connection between the connecting rubber sleeve 26, the anti-slip raised ring 3 24 and the anti-slip raised ring 25 is achieved by the cooperation between the connecting rubber sleeve 26 and the atomizing outer tube 14.

[0032] A sealing gasket 28 is provided on the outer wall of the sample supply tube 17, and the outer wall of the sealing gasket 28 abuts the inner wall of the atomizing outer tube 14, and the sealing gasket 28 is used to seal the connection between the atomizing outer tube 14 and the sample supply tube 17. A sealing gasket 27 is provided on the inner wall of the connecting tube 3, and the inner wall of the sealing gasket 27 abuts the outer wall of the atomizing outer tube 14, and the sealing gasket 27 is used to seal the connecting tube 3 and the atomizing outer tube 14. A sealing ring 23 is fixedly connected to the inner wall of the limiting hole 22, and the inner wall of the sealing ring 23 abuts the outer wall of the sample supply capillary 16, and the sealing ring 23 is used to seal the sample supply capillary 16 and the limiting hole 22, thereby effectively preventing gas leakage;

[0033] A water seal cylinder 7 is provided on the outside of the mixing cylinder 1, and a connecting pipe 6 is fixedly connected to the lower end of the side wall of the mixing cylinder 1. The connecting pipe 6 is communicated with the mixing cylinder 1, and the end of the connecting pipe 6 away from the mixing cylinder 1 passes through the side wall of the water seal cylinder 7 and is communicated with the water seal cylinder 7. A drain pipe 8 is provided below the water seal cylinder 7, and the upper end of the drain pipe 8 passes through the lower side wall of the water seal cylinder 7 and extends to the inner side of the water seal cylinder 7. The upper port position of the drain pipe 8 is higher than the connection between the connecting pipe 6 and the water seal cylinder 7. When in use, liquid for water seal is provided in the water seal cylinder 7, which effectively prevents the mixed gas from overflowing from the water seal cylinder 7. The liquid is higher than the connection between the connecting pipe 6 and the water seal cylinder 7 and lower than the upper port of the drain pipe 8. When the fog water in the mixing cylinder 1 increases, the liquid in the water seal cylinder 7 also gradually increases. When it exceeds the upper port of the drain pipe 8, it enters the drain pipe 8 from the upper port of the drain pipe 8 and is discharged.

[0034] Working principle: when in use, the outside of the ventilation pipe 2 is connected to the gas supply device, the outside of the sample supply pipe 17 in the atomizing device 4 is connected to the sample supply equipment, and the outside of the outlet pipe 5 is connected to the combustion equipment. The sample is introduced into the right side port position of the atomizing outer tube 14 through the sample supply pipe 17 and the sample supply capillary 16 by the sample supply equipment. At the same time, the combustion-supporting gas supply device is used to introduce the combustion-supporting gas into the atomizing outer tube 14 through the atomizing air blowing pipe 15. When the combustion-supporting gas is ejected from the right side port of the atomizing outer tube 14, the sample is driven to be ejected. Under the action of the high-speed airflow, the liquid sample is atomized, and the atomized sample enters the mixing cylinder 1; at the same time The gas supply device introduces gas into the mixing cylinder 1 through the vent pipe 2, where the gas is mixed with the atomized sample. The gas introduced through the vent pipe 2 and the atomized sample are gathered by the hollow truncated cone-shaped auxiliary cylinder 10 and ejected from the upper port of the auxiliary cylinder 10. As the gas is ejected from the upper port of the auxiliary cylinder 10 at high speed, it drives several fan blades 13 to rotate. The rotating fan blades 13 are used to interfere with the airflow, thereby further assisting the mixing and improving the mixing efficiency. The fully mixed gas and sample atomized gas are introduced into the subsequent combustion equipment through the outlet pipe 5 for further processing. When the atomizing device 4 in the device needs to be cleaned, the connecting rubber sleeve 1 20 is removed, and the sample supply tube 17 and the sample supply capillary 16 can be pulled out from the atomizing outer cylinder. After removing the connecting rubber sleeve 2 26, the atomizing outer tube 14 can be pulled out from the connecting tube 3, making it easier to clean the atomizing device 4.

Claims

1. An efficient atomic fluorescence generating device, comprising a mixing cylinder (1), characterized in that: The upper end of the side wall of the mixing cylinder (1) is fixedly connected to a guide pipe (5), and a vent pipe (2) and a connecting pipe (3) are sequentially arranged below the guide pipe (5), and the vent pipe (2) and the connecting pipe (3) are both connected to the mixing cylinder (1). The end of the guide pipe (5) away from the mixing cylinder (1) is connected to a combustion device, and the end of the vent pipe (2) away from the mixing cylinder (1) is connected to a gas supply device. The side of the connecting pipe (3) away from the mixing cylinder (1) is provided with an atomizing device (4); The atomizing device (4) comprises an atomizing outer tube (14) and a sample supply tube (17). The right end of the atomizing outer tube (14) is provided with a conical structure, and the right end of the atomizing outer tube (14) is provided with an opening. A partition plate (21) is fixedly connected to the inner side wall of the atomizing outer tube (14), and a limiting hole (22) is provided on the partition plate (21). The right end of the atomizing outer tube (14) extends into the connecting tube (3). The right end of the sample supply tube (17) is fixedly connected to a sample supply capillary (16). The sample supply capillary (16) The sample supply tube (17) is connected to the sample supply tube (17), the right side end of the sample supply tube (17) extends into the atomizing outer tube (14), the right side end of the sample supply capillary tube (16) passes through the limiting hole (22) and extends into the atomizing outer tube (14), and the right side end of the sample supply capillary tube (16) is close to the right side port of the atomizing outer tube (14), the left side end of the sample supply tube (17) is connected to the sample supply device, and the atomizing air blowing tube (15) is fixedly connected to the side wall of the atomizing outer tube (14), and the atomizing air blowing tube (15) is connected to the atomizing outer tube (14).

2. The high-efficiency atomic fluorescence generating device according to claim 1, characterized in that: A mixing auxiliary mechanism (9) is provided on the inner side of the mixing cylinder (1). The mixing auxiliary mechanism (9) is located above the connection between the vent pipe (2) and the mixing cylinder (1). The mixing auxiliary mechanism (9) comprises an auxiliary cylinder (10). The auxiliary cylinder (10) is in the shape of a hollow truncated cone. The inner diameter of the upper end of the auxiliary cylinder (10) is smaller than the inner diameter of the lower end of the auxiliary cylinder (10). The auxiliary cylinder (10) is fixed on the inner side wall of the mixing cylinder (1). The upper end of the auxiliary cylinder (10) is fixedly connected to a transverse plate (11). The upper end of the transverse plate (11) is rotatably connected to a rotating rod (12). A plurality of fan blades (13) are fixedly connected to the side wall of the rotating rod (12).

3. The high-efficiency atomic fluorescence generating device according to claim 1, characterized in that: The end of the atomizing air blowing pipe (15) away from the atomizing outer pipe (14) is tilted toward the side away from the mixing barrel (1), and the atomizing air blowing pipe (15) is externally connected to a combustion-supporting gas supply device.

4. The high-efficiency atomic fluorescence generating device according to claim 1, characterized in that: The outer wall of the atomizing outer tube (14) is fixedly connected with an anti-skid raised ring 1 (18) and an anti-skid raised ring 3 (24), the outer wall of the sample supply tube (17) is fixedly connected with an anti-skid raised ring 2 (19), and the outer wall of the connecting tube (3) is fixedly connected with an anti-skid raised ring 4 (25), the anti-skid raised ring 1 (18) is close to the sample supply tube (17), the anti-skid raised ring 3 (24) is close to the connecting tube (3), and the sample A connecting rubber sleeve 1 (20) is provided at the connection between the product supply pipe (17) and the atomizing outer pipe (14), and the anti-skid raised ring 1 (18) and the anti-skid raised ring 2 (19) are both located on the inner side of the connecting rubber sleeve 1 (20). A connecting rubber sleeve 2 (26) is provided at the connection between the connecting pipe (3) and the atomizing outer pipe (14), and the anti-skid raised ring 2 (19) and the anti-skid raised ring 3 (24) are both located on the inner side of the connecting rubber sleeve 2 (26).

5. The high-efficiency atomic fluorescence generating device according to claim 1, characterized in that: A second sealing gasket (28) is provided on the outer wall of the sample supply tube (17), and the outer wall of the second sealing gasket (28) abuts against the inner wall of the atomizing outer tube (14); a first sealing gasket (27) is provided on the inner wall of the connecting tube (3), and the inner wall of the first sealing gasket (27) abuts against the outer wall of the atomizing outer tube (14); a sealing ring (23) is fixedly connected to the inner wall of the limiting hole (22), and the inner wall of the sealing ring (23) abuts against the outer wall of the sample supply capillary (16).

6. The high-efficiency atomic fluorescence generating device according to claim 1, characterized in that: A water seal cylinder (7) is provided on the outside of the mixing cylinder (1), and a connecting pipe (6) is fixedly connected to the lower end of the side wall of the mixing cylinder (1). The connecting pipe (6) is connected to the mixing cylinder (1), and the end of the connecting pipe (6) away from the mixing cylinder (1) passes through the side wall of the water seal cylinder (7) and is connected to the water seal cylinder (7). A sewage pipe (8) is provided below the water seal cylinder (7), and the upper end of the sewage pipe (8) passes through the lower side wall of the water seal cylinder (7) and extends to the inner side of the water seal cylinder (7). The upper end of the sewage pipe (8) is located higher than the connection between the connecting pipe (6) and the water seal cylinder (7).

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