Liquid level detection device and dust removal tower

Abstract

The utility model relates to the technical field of dust removal equipment, and discloses a liquid level detection device and a dust removal tower, the liquid level detection device comprises a detection pipe, a liquid level detection element, a filtering mechanism, a first flow deflector and a second flow deflector, the detection pipe is provided with a first end and a second end, and the first end and the second end are provided with openings facing the same direction; the liquid level detection element is used for detecting the liquid level in the detection pipe, and the filtering mechanism is at least arranged at the first end of the detection pipe; the first flow deflectors and the second flow deflectors are respectively arranged on the inner walls of different sides of the detection tube, are alternately arranged along the axial direction of the detection tube, and are respectively obliquely arranged; when the liquid level detection element operates, the detection tube is inserted into the liquid to be detected, the first end is located below the liquid level, and the second end is located above the liquid level. The liquid level detection device can ensure that the liquid level in the detection pipe is not influenced by bubbling fluctuation, floating foam impurities and the like in liquid outside the detection pipe, so that the influence of liquid level fluctuation on liquid level detection is avoided, and the accuracy of liquid level detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a liquid level detection device and a dust removal tower. Background Art

[0002] During the production process of flour, starch, etc., a large amount of dust is usually generated in the production workshop, which pollutes the working environment of workers. Generally, dust removal devices are equipped in the production workshop for dust treatment. The water-bathed dust removal tower is a relatively common dust removal device. The tail gas with dust is discharged into the dust removal tower through the tail gas exhaust pipe, so that the dust in the gas settles in the dust removal tower to achieve the dust removal effect. When the dust removal tower is working, the settling cooling water in the dust removal tower will continue to evaporate. If the water level is too low, it will affect the dust removal effect. Therefore, it is necessary to regularly add cooling water to the dust removal tower. When the cooling water level in the dust removal tower is too high, the tail gas exhaust pipe will extend too deep into the water, which will increase energy consumption and affect the dust removal effect; when the cooling water level in the dust removal tower is too low, the tail gas exhaust pipe will be exposed above the liquid surface, affecting the dust removal effect. Therefore, when adding cooling water to the dust removal tower, it is very important to detect the liquid level in the dust removal tower.

[0003] At present, a sight glass is generally set outside the dust removal tower for liquid level detection, and the amount of water added is controlled manually through the sight glass. However, when the exhaust pipe is extended underwater, bubbles will be generated. The bubbles will cause large fluctuations in the liquid level, affecting the accuracy of liquid level detection. As a result, there will be too much or too little water added, affecting the dust removal effect. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid level detection device and a dust removal tower, so as to avoid the influence of liquid level fluctuation on liquid level detection, improve the accuracy of liquid level detection, and thus facilitate accurate control of the water replenishment amount.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a liquid level detection device, comprising:

[0007] A detection tube having a first end and a second end, wherein the first end and the second end have openings facing the same direction;

[0008] A liquid level detection element, used to detect the liquid level in the detection tube;

[0009] A filtering mechanism, at least disposed at the first end of the detection tube;

[0010] A first guide plate and a second guide plate are respectively arranged on inner walls of different sides of the detection tube and are alternately arranged along the axial direction of the detection tube, and the first guide plate and the second guide plate are both arranged obliquely;

[0011] When the liquid level detection element is in operation, the detection tube is inserted into the liquid to be detected, with the first end located below the liquid surface and the second end located above the liquid surface.

[0012] In some embodiments, the first guide vane and the second guide vane are respectively arranged to be inclined downward.

[0013] In some embodiments, the orthographic projections of the first guide vane and the second guide vane along the axial direction of the detection tube on the radial cross section of the detection tube at least partially overlap.

[0014] In some embodiments, the detection tube includes a vertical portion and a bent portion, the bent portion is connected to the vertical portion, the end of the bent portion away from the vertical portion is the first end, the end of the vertical portion away from the bent portion is the second end, and the first guide plate and the second guide plate are both arranged in the vertical portion.

[0015] In some embodiments, a drainage hole is provided on the bent portion.

[0016] In some embodiments, the liquid level detection element includes a first liquid level detection element and a second liquid level detection element, the second liquid level detection element and the first liquid level detection element are arranged in the detection tube along the axial direction of the detection tube, and the detection liquid level value of the second liquid level detection element is greater than the detection liquid level value of the first liquid level detection element.

[0017] In some embodiments, the second end of the detection tube is provided with the filtering mechanism.

[0018] The utility model also provides a dust removal tower, comprising:

[0019] The tower body has a liquid inlet, a liquid outlet and an air duct connection port, wherein the liquid inlet is used to connect with a liquid replenishing device;

[0020] An exhaust pipe is inserted into the tower body through the air pipe connection port, and the exhaust pipe is connected to the air pipe connection port;

[0021] The liquid level detection device as described above is arranged in the tower body.

[0022] In some embodiments, the dust removal tower also includes a controller, and the liquid level detection element and the liquid replenishing device are electrically connected to the controller respectively.

[0023] In some embodiments, the dust removal tower also includes a guide plate, which is obliquely arranged in the tower body and connected to the inner wall of the tower body, and the guide plate divides the tower body into a first cavity and a second cavity. A drain port is also provided on the tower body, and the liquid inlet, liquid outlet, air duct connection port and the drain port are all connected to the first cavity.

[0024] Compared with the prior art, the liquid level detection device and dust removal tower of the utility model have the following beneficial effects:

[0025] The liquid level detection device of the embodiment of the utility model comprises a detection tube, a liquid level detection element, a filtering mechanism, a first guide plate and a second guide plate. The filtering mechanism is arranged at the first end of the detection tube, which can prevent foreign matter in the liquid to be detected from entering the detection tube, thereby preventing the foreign matter from affecting the liquid level in the detection tube. The first guide plate and the second guide plate are alternately arranged in the detection tube, and the first guide plate and the second guide plate respectively form a guide port for the liquid to pass through with the inner wall of the detection tube. When the liquid passes through the guide port, the bubbles in the liquid are squeezed and broken by the first guide plate and the second guide plate, thereby preventing the bubbles from causing the liquid level in the detection tube to fluctuate. During detection, the detection tube is inserted into the liquid to be detected, with the first end below the liquid surface and the second end above the liquid surface. When the liquid level of the liquid to be detected rises or falls, the liquid to be detected enters and exits the detection tube through the first end, ensuring that the liquid level in the detection tube rises and falls synchronously, so that the liquid level of the liquid to be detected can be obtained by monitoring the liquid level in the detection tube through the liquid level detection element. When the liquid to be tested enters the test tube, foreign matter in the liquid is filtered out by the filtering mechanism, and the bubbles in the liquid are burst by the first guide plate and the second guide plate, thereby ensuring that the liquid level in the test tube is not affected by bubbling fluctuations and floating foam and debris in the liquid outside the test tube, thereby avoiding the influence of liquid level fluctuations on liquid level detection, improving the accuracy of liquid level detection, and making it convenient to accurately control the amount of liquid replenishment according to the detected liquid level. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the liquid level detection device according to an embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the dust removal tower described in the embodiment of the utility model;

[0028] Figure 3 It is a top view schematic diagram of the dust removal tower described in the embodiment of the utility model.

[0029] Numbers in the figure:

[0030] 10. Detection tube; 101. First end; 102. Second end; 11. Vertical portion; 12. Bend portion; 121. Drain hole; 20. Filter mechanism; 30. First guide plate; 40. Second guide plate; 50. First liquid level detection element; 60. Second liquid level detection element; 70. Tower body; 701. Liquid inlet; 702. Liquid outlet; 703. Air duct connection port; 704. Drain port; 705. Overflow port; 706. First cavity; 707. Second cavity; 708. Sight glass; 71. Guide plate; 80. Exhaust duct; 90. Controller. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] See also Figure 1The embodiment of the utility model provides a liquid level detection device, including a detection tube 10, a liquid level detection element, a filtering mechanism 20, a first guide plate 30 and a second guide plate 40, the detection tube 10 has a first end 101 and a second end 102, and the first end 101 and the second end 102 have openings facing the same direction; the liquid level detection element is used to detect the liquid level in the detection tube 10, and the liquid level detection element can be arranged in the detection tube; the filtering mechanism 20 is at least arranged at the first end 101 of the detection tube 10; the first guide plate 30 and the second guide plate 40 are respectively arranged on the inner walls of different sides of the detection tube 10 and are alternately arranged along the axial direction of the detection tube 10, and the first guide plate 30 and the second guide plate 40 are both inclined to form guide ports with the inner walls of the detection tube 10 respectively; when the liquid level detection element is in operation, the detection tube 10 is inserted into the liquid to be detected, and the first end 101 is located below the liquid surface, and the second end 102 is located above the liquid surface.

[0035] After the detection tube 10 is inserted into the liquid to be detected, the filter mechanism 20 can prevent foreign matter in the liquid to be detected from entering the detection tube 10 and affecting the liquid level in the detection tube 10. After the liquid to be detected enters the detection tube 10 through the first end 101, when the liquid passes through the guide port, the bubbles in the liquid are squeezed and broken by the first guide plate 30 or the second guide plate 40, thereby preventing the bubbles from causing fluctuations in the liquid level in the detection tube 10 and ensuring the stability of the liquid level in the detection tube 10. When the liquid level of the liquid to be detected rises or falls, the liquid to be detected enters and exits the detection tube 10 through the first end 101, ensuring that the liquid level in the detection tube 10 rises and falls synchronously, so that the liquid level of the liquid to be detected can be obtained by monitoring the liquid level in the detection tube 10 through the liquid level detection element. When the liquid to be detected enters the detection tube 10, foreign matter in the liquid is filtered out by the filtering mechanism 20, and the bubbles in the liquid are burst by the first guide plate 30 and the second guide plate 40, thereby ensuring that the liquid level in the detection tube 10 is not affected by bubbling fluctuations and floating foam and debris in the liquid outside the detection tube 10, thereby avoiding the influence of liquid level fluctuations on liquid level detection, improving the accuracy of liquid level detection, and making it convenient to accurately control the amount of liquid replenishment according to the detected liquid level.

[0036] See also Figure 1 In some embodiments, the first guide plate 30 and the second guide plate 40 are arranged downwardly. In this way, when the liquid flows upward in the detection tube 10, the bubbles in the liquid touch the ends of the first guide plate 30 or the second guide plate 40 and are easily punctured, thereby ensuring that the bubbles in the detection tube 10 burst and the liquid level in the detection tube 10 is stable. Figure 1Taking the orientation shown as a reference, when the detection tube 10 is placed vertically, the first guide plate 30 is fixed on the left side wall of the detection tube 10 and tilted downward, the second guide plate 40 is fixed on the right side wall of the detection tube 10 and tilted downward, a guide port is formed between the end of the first guide plate 30 and the right side wall of the detection tube 10, and a guide port is formed between the end of the second guide plate 40 and the left side wall of the detection tube 10. The angle between the first guide plate 30 and the inner wall of the detection tube 10 and the angle between the second guide plate 40 and the inner wall of the detection tube 10 can be the same or different. It is only necessary to ensure that there is a gap between the end of the first guide plate 30 and the second guide plate 40 or the inner wall of the detection tube 10, and there is a gap between the end of the second guide plate 40 and the first guide plate 30 or the inner wall of the detection tube 10, so as to form a guide port and ensure the smooth flow of liquid in the detection tube 10. In some embodiments, a plurality of first guide vanes 30 and a plurality of second guide vanes 40 are provided respectively, and the plurality of first guide vanes 30 are arranged parallel to each other, and the plurality of second guide vanes 40 are arranged parallel to each other.

[0037] In some embodiments, the projections of the first guide plate 30 and the second guide plate 40 on the radial section of the detection tube 10 along the axial direction of the detection tube 10 at least partially overlap, thereby avoiding the formation of an unobstructed liquid channel in the axial direction of the detection tube 10, so that the liquid cannot touch the first guide plate 30 or the second guide plate 40 when passing through, resulting in the bubbles in the liquid being unable to burst.

[0038] See also Figure 1 As shown, in some embodiments, the detection tube 10 includes a vertical portion 11 and a bent portion 12, the bent portion 12 is connected to the vertical portion 11, the end of the bent portion 12 away from the vertical portion 11 is the first end 101, the end of the vertical portion 11 away from the bent portion 12 is the second end 102, the first guide plate 30 and the second guide plate 40 are both arranged in the vertical portion 11, and a drainage hole 121 is provided on the bent portion 12. By providing the bent portion 12, the openings of the first end 101 and the second end 102 are both arranged upward, so that the liquid to be detected can enter the first end 101 and enter the detection tube 10 through the first end 101. The drainage hole 121 is provided on the bent portion 12, and when the liquid level of the liquid to be detected drops, the liquid in the detection tube 10 is discharged through the drainage hole 121, thereby ensuring that the liquid level in the detection tube 10 is synchronized with the liquid level of the liquid to be detected. In order to drain the liquid in the detection tube 10 smoothly, when the detection tube 10 is placed vertically, the drainage hole 121 is located at the lowest point in the vertical direction of the bending portion 12. The bending portion 12 is arranged in an arc shape, for example, the bending portion 12 is a semicircular arc shape.

[0039] In order to prevent external foreign matter from entering the detection tube 10 through the second end 102, in some embodiments, the second end 102 of the detection tube 10 is provided with a filter mechanism 20. It should be noted that the filter mechanism 20 can be a filter net covering the first end 101 or the second end 102.

[0040] In some embodiments, the liquid level detection element includes a first liquid level detection element 50, which is disposed in the detection tube 10, and the first liquid level detection element 50 is used to detect a first liquid level value in the detection tube 10. Since the liquid level in the detection tube 10 rises and falls synchronously with the liquid level of the liquid to be detected during detection, the first liquid level value in the detection tube 10 is detected, which is the first liquid level value of the liquid to be detected. The first liquid level value can be set to the liquid level value that needs to be replenished for the liquid to be detected, so as to replenish the liquid to be detected in time and ensure the sufficiency of the liquid to be detected.

[0041] In some embodiments, the liquid level detection element further includes a second liquid level detection element 60, which is disposed in the detection tube 10, and the second liquid level detection element 60 and the first liquid level detection element 50 are spaced apart along the axial direction of the detection tube 10, and the second liquid level detection element 60 is used to detect a second liquid level value in the detection tube 10, and the second liquid level value is greater than the first liquid level value. The second liquid level value can be set as a liquid level value at which it is necessary to stop replenishing the liquid to be detected, thereby avoiding excessive liquid to be detected.

[0042] The first liquid level detection element 50 and the second liquid level detection element 60 may both be elements capable of detecting liquid levels, such as liquid level sensors and liquid level gauges.

[0043] It should be pointed out that since the liquid level in the detection tube 10 is not affected by the fluctuation of foreign matter such as bubbles or foam in the liquid to be detected, the liquid level in the detection tube 10 is relatively stable. Therefore, the liquid level in the detection tube 10 can also be visually observed using a sight glass 708.

[0044] See also Figure 2 and Figure 3 The embodiment of the utility model also provides a dust removal tower, including a tower body 70, an exhaust pipe 80 and a liquid level detection device, the tower body 70 has a liquid inlet 701, a liquid outlet 702 and an air duct connection port 703, the liquid inlet 701 is used to connect with the liquid replenishing device; the exhaust pipe 80 passes through the air duct connection port 703 and is inserted into the tower body 70, and the exhaust pipe 80 is connected to the air duct connection port 703; the liquid level detection device is arranged in the tower body 70, and the liquid level detection device is the liquid level detection device as described above.

[0045] The tower body 70 contains liquid, such as water. When the dust removal tower is used for water bathing and dust removal, the exhaust pipe 80 is connected to the pipes or equipment that need to be dust-removed. The exhaust pipe 80 is inserted into the liquid of the tower body 70, so that foreign matter such as dust and floating objects in the gas in the exhaust pipe 80 settles in the liquid to complete the dust removal. When the gas is passed into the liquid, bubbles will be generated, and a large amount of floating foam will also be generated on the surface of the liquid, resulting in relatively large fluctuations in the liquid level in the tower body 70. The liquid level detection device is inserted into the tower body 70, and the liquid level in the detection tube 10 can be measured by the liquid level detection device. The liquid level in the detection tube 10 rises and falls synchronously with the liquid level in the tower body 70, and because the liquid level in the detection tube 10 is not affected by the fluctuation of the liquid level in the tower body 70, the liquid level in the tower body 70 can be accurately measured, which is convenient for timely replenishment of liquid in the tower body 70.

[0046] It should be noted that the detection tube 10 of the liquid level detection device is fixed to the inner wall of the tower body 70, specifically, the vertical portion 11 of the detection tube 10 is fixedly connected to the inner wall of the tower body 70. After the detection tube 10 is inserted into the liquid in the tower body 70, the first end 101 of the detection tube 10 is located below the liquid surface, and the second end 102 of the detection tube 10 is located above the liquid surface.

[0047] In some embodiments, the liquid replenishing device may be a water storage device such as a water storage tank, which is used to replenish cooling water into the tower body 70 through the liquid inlet 701 .

[0048] In some embodiments, the tower body 70 is further provided with an overflow port 705, which plays a role in preventing overflow circulation. A sight glass 708 is also provided on the outside of the tower body 70 to facilitate visual observation of the liquid level, and to facilitate manual inspection and re-inspection.

[0049] In some embodiments, the dust removal tower further includes a guide plate 71, which is tiltedly arranged in the tower body 70 and connected to the inner wall of the tower body 70, and the guide plate 71 divides the tower body 70 into a first cavity 706 and a second cavity 707. The tower body 70 is also provided with a drain port 704, and the liquid inlet 701, the liquid outlet 702, the air duct connection port 703 and the drain port 704 are all connected to the first cavity 706. The second cavity 707 is a cavity, and the bottom surface of the tower body 70 is a plane, which facilitates the stable placement of the tower body 70. The first cavity 706 is used to store liquid, and liquid is added to the first cavity 706 through the liquid inlet 701, and the liquid in the first cavity 706 is provided to the spray system through the liquid outlet 702. When it is necessary to clean the interior of the first cavity 706, the liquid and sediment in the first cavity 706 are discharged through the drain port 704. In this process, the guide plate 71 in the tower body 70 can guide the flow of the liquid and sediment, so that they can flow to the drain port 704. In some embodiments, the guide plate 71 is connected to the junction of the tower bottom and the tower side wall of the tower body 70, and the drain port 704 is opened at the bottom of the tower side wall, which fully utilizes the space in the tower body 70 and facilitates the discharge of the liquid in the tower body 70.

[0050] When the dust removal tower is working, the settling cooling water in the dust removal tower will continue to evaporate, and water needs to be replenished regularly, and the distance between the high and low liquid levels needs to be small to prevent the exhaust pipe 80 from being inserted too deeply into the liquid or exposed above the liquid surface. The first liquid level value detected by the first liquid level detection element 50 in the liquid level detection device facilitates timely replenishment of liquid into the tower body 70 to prevent the exhaust pipe 80 from being located above the liquid surface due to insufficient liquid and failing to achieve the dust removal effect. The second liquid level value is detected by the second liquid level detection element 60 in the liquid level detection device to prevent excessive liquid in the tower body 70, causing the exhaust pipe 80 to be inserted too deeply below the liquid surface and increase the exhaust air transmission energy consumption.

[0051] In some embodiments, the dust removal tower also includes a controller 90, and the liquid level detection element and the liquid replenishing device are electrically connected to the controller 90 respectively. The liquid level detection element transmits the liquid level detection signal to the controller, and the controller controls the liquid replenishing device to replenish liquid or stop replenishing liquid. Specifically, the first liquid level detection element 50, the second liquid level detection element 60 and the liquid replenishing device are electrically connected to the controller 90 respectively. When in use, when the first liquid level detection element 50 detects that the liquid level in the detection tube 10 reaches the first liquid level value, it indicates that the liquid in the tower body 70 is insufficient and needs to be replenished. The first liquid level detection element 50 transmits the detection signal to the controller 90, and the controller 90 receives the detection signal and controls the liquid replenishing device to start replenishing liquid into the tower body 70. After replenishing the liquid, the liquid level in the tower body 70 and the liquid level in the detection tube 10 rise synchronously. When the second liquid level detection element 60 detects that the liquid level in the detection tube 10 reaches the second liquid level value, it indicates that there is enough liquid in the tower body 70 and replenishment can be stopped. At this time, the controller 90 controls the liquid replenishing device to stop supplying liquid into the tower body 70, thereby avoiding too much or too little liquid in the tower body 70.

[0052] The working process of the utility model is:

[0053] When using the dust removal tower for water bathing dust removal, liquid (water) is supplied into the tower body 70, and the liquid level detection device is fixed to the inner wall of the tower body 70. When the dust removal tower is in normal operation, the gas containing foreign matter such as dust and floating objects is introduced into the tower body 70 through the exhaust pipe 80 to perform sedimentation dust removal. The liquid level in the detection tube 10 is measured by the liquid level detection device to obtain the accurate liquid level in the tower body 70. Liquid is added to the tower body 70 in time according to the measured liquid level, and excessive liquid in the tower body 70 is avoided. When the tower body 70 needs to be cleaned, the liquid and other substances in the tower body 70 are discharged through the drain port 704.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A liquid level detection device, characterized in that: include: A detection tube having a first end and a second end, wherein the first end and the second end have openings facing the same direction; A liquid level detection element, used to detect the liquid level in the detection tube; A filtering mechanism, at least disposed at the first end of the detection tube; A first guide plate and a second guide plate are respectively arranged on inner walls of different sides of the detection tube and are alternately arranged along the axial direction of the detection tube, and the first guide plate and the second guide plate are both arranged obliquely; When the liquid level detection element is in operation, the detection tube is inserted into the liquid to be detected, with the first end located below the liquid surface and the second end located above the liquid surface.

2. The liquid level detection device according to claim 1, characterized in that: The first guide vane and the second guide vane are respectively arranged to be inclined downward.

3. The liquid level detection device according to claim 1, characterized in that: The orthographic projections of the first guide vane and the second guide vane along the axial direction of the detection tube on the radial cross section of the detection tube at least partially overlap.

4. The liquid level detection device according to claim 1, characterized in that: The detection tube includes a vertical portion and a bent portion, the bent portion is connected to the vertical portion, the end of the bent portion away from the vertical portion is the first end, the end of the vertical portion away from the bent portion is the second end, and the first guide plate and the second guide plate are both arranged in the vertical portion.

5. The liquid level detection device according to claim 4, characterized in that: The bent portion is provided with a drainage hole.

6. The liquid level detection device according to claim 1, characterized in that: The liquid level detection element includes a first liquid level detection element and a second liquid level detection element. The second liquid level detection element and the first liquid level detection element are arranged in the detection tube along the axial direction of the detection tube, and the detection liquid level value of the second liquid level detection element is greater than the detection liquid level value of the first liquid level detection element.

7. The liquid level detection device according to claim 1, characterized in that: The second end of the detection tube is provided with the filtering mechanism.

8. A dust removal tower, characterized in that: include: The tower body has a liquid inlet, a liquid outlet and an air duct connection port, wherein the liquid inlet is used to connect with a liquid replenishing device; An exhaust pipe is inserted into the tower body through the air pipe connection port, and the exhaust pipe is connected to the air pipe connection port; The liquid level detection device according to any one of claims 1 to 7 is arranged in the tower body.

9. The dust removal tower according to claim 8, characterized in that: The dust removal tower also includes a controller, and the liquid level detection element and the liquid replenishing device are electrically connected to the controller respectively.

10. The dust removal tower according to claim 8, characterized in that: The dust removal tower also includes a guide plate, which is obliquely arranged in the tower body and connected to the inner wall of the tower body. The guide plate divides the tower body into a first cavity and a second cavity. A drain port is also provided on the tower body. The liquid inlet, liquid outlet, air duct connection port and the drain port are all connected to the first cavity.

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