An exhaust gas treatment device
Patent Information
- Application Number
- CN202522272515.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-28
AI Technical Summary
[0003]然而，在实际运行中，传统的喷淋塔系统存在明显弊端
本申请提供了一种废气处理装置，包括喷淋塔、水箱、液位控制单元、控制部和加药部，水箱的两侧分别连通有第一进水管道和喷淋塔的内腔，第一进水管道用于向水箱和喷淋塔供水；液位控制单元设置于第一进水管道上，用于根据水箱内的液位控制第一进水管道的通断，液位低时开启补水，液位高时关闭补水，无需人工值守监控液位和操作阀门，既解决了传统人工补水耗时费力、影响工作效率的问题，又避免了液位过高溢出或过低缺水的风险，保障水箱液位稳定；喷淋塔内设置有pH探头，pH探头与控制部信号连接，pH 探头可持续采集喷淋塔内药液的pH值并传递至控制部，确保控制部能及时获取药液酸碱度状态，为后续精准加药提供数据支撑；加药部用于盛放药液，加药部的药液出口与喷淋塔的内腔连通，避免人工加药的繁琐操作，确保药剂能精准输送至喷淋塔内，提升加药便捷性；控制部与加药部信号连接，控制部用于接收pH探头发出的检测信号，并根据检测信号驱动加药部向喷淋塔内流入药液，控制部按预设范围自动驱动加药部投加药剂，替代人工凭经验加药的方式，确保药液pH 值稳定在最佳治理范围；药液由喷淋塔内的喷嘴喷洒。上述废气处理装置能够精确控制喷淋塔内药液的pH值，并实现自动补水，降低了人工成本，提高治理效率及可靠性。
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Figure CN224925903U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of chemical waste gas treatment equipment, and more specifically, to a waste gas treatment device. Background Technology
[0002] Industrial waste gas treatment is a crucial step in meeting increasingly stringent environmental standards and reducing air pollution. Among numerous treatment technologies, spray towers have become a commonly used device for treating water-soluble gaseous pollutants due to their simple structure and high treatment efficiency. Their basic principle is to use a circulating pump to deliver a chemical solution to nozzles inside the tower, forming atomized droplets that come into full contact with the waste gas. Through chemical neutralization or physical absorption, the waste gas is purified.
[0003] However, in actual operation, traditional spray tower systems have significant drawbacks. First, the pH value of the chemical solution inside the tower is a core parameter determining the treatment effect, but it changes continuously as the reaction proceeds. Currently, it generally relies on manual, timed monitoring and dosing of chemicals, making precise control difficult. This often results in pH values deviating from the optimal range, leading to decreased treatment effectiveness or even failure. Second, during operation, the liquid in the spray tower is continuously consumed due to evaporation and runoff, requiring frequent water replenishment to maintain the liquid level. Existing methods mostly involve manual labor, which is not only time-consuming and labor-intensive, increasing labor costs, but also potentially causing waste gas escape due to untimely water replenishment, affecting the efficiency and reliability of waste treatment. Utility Model Content
[0004] The purpose of this invention is to provide a waste gas treatment device that can accurately control the pH value of the chemical solution in the spray tower and achieve automatic water replenishment, thereby reducing labor costs and improving treatment efficiency and reliability.
[0005] The embodiments of this utility model are implemented as follows: One aspect of this utility model provides a waste gas treatment device, including a spray tower, a water tank, a liquid level control unit, a control unit, and a dosing unit. A first water inlet pipe is connected to both sides of the water tank, and the inner cavity of the spray tower is connected to the water tank. The first water inlet pipe supplies water to both the water tank and the spray tower. The liquid level control unit is installed on the first water inlet pipe and controls the opening and closing of the first water inlet pipe according to the liquid level in the water tank. A pH probe is installed inside the spray tower and is signal-connected to the control unit. The dosing unit holds the chemical solution, and its outlet is connected to the inner cavity of the spray tower. The control unit is signal-connected to the dosing unit and receives the detection signal from the pH probe. Based on the detection signal, the control unit drives the dosing unit to inject the chemical solution into the spray tower, where the solution is sprayed from nozzles inside the spray tower.
[0006] Optionally, the dosing unit includes a dosing tank and a dosing pump. The dosing tank is used to hold the chemical solution. The dosing tank is connected to the inner cavity of the spray tower through a dosing pipe, and the dosing pump is installed on the dosing pipe.
[0007] Optionally, the exhaust gas treatment device also includes a second water inlet pipe, one end of which is connected to the first water inlet pipe and the other end of which is connected to the dosing tank.
[0008] Optionally, the inner cavity of the water tank is provided with a partition, which is used to divide the inner cavity of the water tank into an inlet cavity and an outlet cavity. The first inlet pipe is connected to the inlet cavity, and the outlet cavity is connected to the inner cavity of the spray tower through a pipe. The partition is provided with a through hole, and the inlet cavity and the outlet cavity are connected by the through hole.
[0009] Optionally, the exhaust gas treatment device also includes a circulating water pump, which is connected to the side of the water tank away from the first inlet pipe. The circulating water pump is connected to the nozzles in the spray tower through a circulating inlet pipe, and the inner cavity of the spray tower is connected to the inner cavity of the water tank through a circulating outlet pipe.
[0010] Optionally, the volume of the outlet chamber is smaller than that of the inlet chamber.
[0011] Optionally, the first water inlet pipe is equipped with a first valve, which is used to control the opening and closing of the first water inlet pipe.
[0012] Optionally, the second water inlet pipe is equipped with a second valve, which is used to control the opening and closing of the second water inlet pipe.
[0013] Optionally, the level control unit is a float valve, which is located at the inlet of the first water inlet pipe.
[0014] Optionally, the waste gas treatment device also includes an overflow pipe, which is connected to the inner cavity of the spray tower and is used to discharge the waste liquid in the spray tower.
[0015] The beneficial effects of this utility model include: This application provides a waste gas treatment device, including a spray tower, a water tank, a liquid level control unit, a control unit, and a dosing unit. A first water inlet pipe is connected to both sides of the water tank, and the inner cavity of the spray tower is connected to the water tank. The first water inlet pipe supplies water to both the water tank and the spray tower. The liquid level control unit is installed on the first water inlet pipe and controls the opening and closing of the pipe based on the liquid level in the water tank. Water replenishment is activated when the liquid level is low and deactivated when the liquid level is high. This eliminates the need for manual monitoring of the liquid level and valve operation, solving the problems of time-consuming and labor-intensive manual water replenishment, which affects work efficiency. It also avoids the risk of overflow due to excessively high liquid levels or water shortage due to excessively low liquid levels, ensuring a stable liquid level in the water tank. A pH probe is installed inside the spray tower and is connected to the control unit via a signal connection. The probe continuously collects the pH value of the chemical solution inside the spray tower and transmits it to the control unit, ensuring that the control unit can promptly obtain the acidity and alkalinity status of the chemical solution, providing data support for subsequent precise dosing. The dosing unit is used to hold the chemical solution, and its outlet is connected to the inner cavity of the spray tower, avoiding the cumbersome operation of manual dosing and ensuring that the agent is accurately delivered into the spray tower, improving the convenience of dosing. The control unit is signal-connected to the dosing unit, receiving the detection signal from the pH probe and driving the dosing unit to flow the chemical solution into the spray tower according to the detection signal. The control unit automatically drives the dosing unit to add the agent according to a preset range, replacing the manual dosing method based on experience, ensuring that the pH value of the chemical solution is stable within the optimal treatment range. The chemical solution is sprayed from nozzles inside the spray tower. The above-mentioned waste gas treatment device can accurately control the pH value of the chemical solution inside the spray tower and achieve automatic water replenishment, reducing labor costs and improving treatment efficiency and reliability. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 One of the structural schematic diagrams of the waste gas treatment device provided in the embodiments of this utility model; Figure 2 This is the second schematic diagram of the structure of the waste gas treatment device provided in the embodiment of this utility model; Figure 3 The third schematic diagram of the waste gas treatment device provided in the embodiment of this utility model; Figure 4 The fourth schematic diagram of the waste gas treatment device provided in the embodiment of this utility model.
[0018] Icons: 100 - Waste gas treatment device; 110 - Spray tower; 120 - Water tank; 121 - Baffle plate; 1211 - Through hole; 122 - Inlet chamber; 123 - Outlet chamber; 130 - Float valve; 140 - Control unit; 150 - Dosing unit; 151 - Dosing tank; 152 - Dosing pump; 153 - Dosing pipeline; 160 - First inlet pipeline; 161 - First valve; 170 - Second inlet pipeline; 171 - Second valve; 180 - Circulating water pump; 181 - Circulating inlet pipe; 182 - Circulating outlet pipe; 190 - Overflow pipe. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0022] In the description of this utility model, it should be noted that the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0023] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Please refer to Figure 1 This embodiment provides a waste gas treatment device 100, including a spray tower 110, a water tank 120, a liquid level control unit, a control unit 140, and a dosing unit 150. The water tank 120 is connected to a first water inlet pipe 160 for replenishing water into the water tank 120. The water tank 120 is connected to the inner cavity of the spray tower 110 through a pipe for supplying water to the spray tower 110. The liquid level control unit is disposed on the first water inlet pipe 160 for controlling the first water inlet pipe according to the liquid level in the water tank 120. The on / off state of channel 160; a pH probe is installed inside the spray tower 110, and the pH probe is connected to the control unit 140 by signal; the dosing unit 150 is used to hold the chemical solution, and the chemical solution outlet of the dosing unit 150 is connected to the inner cavity of the spray tower 110; the control unit 140 is connected to the dosing unit 150 by signal, and the control unit 140 is used to receive the detection signal emitted by the pH probe, and drive the dosing unit 150 to flow the chemical solution into the spray tower 110 according to the detection signal, and the chemical solution is sprayed by the nozzle of the spray tower 110.
[0026] Specifically, such as Figure 1 As shown, the waste gas treatment device 100 includes a spray tower 110, in which the chemical solution stored in the spray tower 110 can be sprayed out through the nozzles of the spray tower 110 to form atomized droplets, which fully contact the waste gas to achieve chemical neutralization and reduce air pollution; it also includes a water tank 120, which serves as a water supply and storage function. The water tank 120 is connected to a first water inlet pipe 160, one end of which extends into the inner cavity of the water tank 120, and the other end is connected to an external tap water source to supply clean water to the water tank 120. Optionally, as Figure 3 As shown, the first water inlet pipe 160 is equipped with a first valve 161, which is used to control the opening and closing of the first water inlet pipe 160. When the exhaust gas treatment device 100 needs maintenance or is suspended from operation, the water supply can be cut off by closing the first valve 161, avoiding water waste or equipment damage, and improving the safety and flexibility of system operation and maintenance.
[0027] The outlet tank 120 of the water tank 120 is connected to the inner cavity of the spray tower 110 through a pipe. The clean water stored in the water tank 120 can be transported to the spray tower 110 through the pipe to ensure that the spray tower 110 can continuously obtain sufficient liquid. Since the spray tower 110 and the water tank 120 are connected by pipes, when the water level in the spray tower 110 drops due to evaporation or being carried away by exhaust gas, the water level in the outlet water tank 120 will also drop synchronously. Therefore, it is necessary to replenish water in the spray tower 110 in a timely manner. To achieve the automatic water replenishment function to the spray tower 110, the exhaust gas treatment device 100 also includes a liquid level control unit. Figure 1 As shown, in a preferred embodiment of this application, the liquid level control unit is a float valve 130, which is located at the inlet of the first water inlet pipe 160. The float valve 130 is low in cost and easy to assemble, improving the reliability of the waste treatment device. The float valve 130 can sense changes in the liquid level in the water tank 120 through its own buoyancy: when the liquid level is lower than a preset height, the float falls, the valve opens, and the first water inlet pipe 160 is opened for water replenishment, thereby replenishing the interior of the spray tower 110; when the liquid level rises to the preset height, the float bounces up, the valve closes, and the water inlet pipe is disconnected from water replenishment.
[0028] Of course, in addition to the float valve 130, the liquid level control unit can also be other components that can drive the first water inlet pipe 160 to open or close according to the height of the liquid level, so as to facilitate the cooperation between the liquid level sensor and the controller to realize the opening or closing of the water inlet pipe. This application does not impose any restrictions on this.
[0029] By setting up the liquid level control unit, fully automated and precise control of the 120 liquid level in the water tank can be achieved. No manual monitoring of the liquid level is required. The liquid level control unit can respond to changes in the liquid level in real time, which greatly improves work efficiency. Furthermore, the liquid level control unit can accurately control the liquid level within the preset range, which not only prevents insufficient water supply due to too low a liquid level, but also avoids liquid overflow due to too high a liquid level, further improving the reliability of waste gas treatment.
[0030] A pH probe (not shown in the figure) is installed in the inner cavity of the spray tower 110. The pH probe can directly contact the chemical solution in the tower and collect the pH value data of the chemical solution in real time. The pH probe is connected to the line controller and transmits the collected pH data to the controller in real time, providing accurate and timely data for the control unit 140 to drive the dosing, and avoiding the decline in treatment effect caused by the lag in pH detection.
[0031] The dosing unit 150 stores the chemical solution, and the control unit 140 can preset the optimal pH control range of the chemical solution. It receives real-time data from the pH probe and compares it with the preset range. When the pH value is lower or higher than the preset value, the controller sends a start signal to the dosing unit 150, which then injects the chemical solution into the spray tower 110. When the pH value returns to the preset range, the controller sends a stop signal, and the dosing unit 150 stops injecting the chemical solution into the spray tower 110. The chemical solution injected into the spray tower 110 is atomized into droplets through nozzles.
[0032] This setup enables intelligent control of the pH value of the chemical solution and high efficiency in exhaust gas purification, replacing the manual addition of chemicals based on experience in existing technologies. It ensures that the pH value of the chemical solution remains stable within the optimal reaction range, avoiding treatment failure due to pH deviation; at the same time, it significantly reduces labor costs.
[0033] It should be noted that, as Figure 2 As shown, in one possible embodiment of this application, the inner cavity of the water tank 120 is provided with a partition 121, which is used to divide the inner cavity of the water tank 120 into an inlet cavity 122 and an outlet cavity 123. The first inlet pipe 160 is connected to the inlet cavity 122, and the outlet cavity 123 is connected to the inner cavity of the spray tower 110 through a pipe. A through hole 1211 is provided on the partition 121, and the inlet cavity 122 and the outlet cavity 123 are connected by the through hole 1211.
[0034] Preferably, such as Figure 2 As shown, the through hole 1211 is rectangular in shape, and its extension direction is parallel to the horizontal plane to accelerate the water flow rate. In one specific embodiment of this application, the water tank 120 has a length of 950mm, a width of 450mm, and a height of 800mm. The outlet of the first water inlet pipe 160 is 650mm away from the bottom of the tank along the height direction; the through hole 1211 has a width of 200mm and a length of 450mm, and is 100mm away from the bottom of the tank along the height direction.
[0035] The inlet chamber 122 is replenished with water through the first inlet pipe 160. The liquid flows into the outlet chamber 123 through the through hole 1211 of the baffle 121, which can avoid the liquid level fluctuation caused by the direct impact of the inlet water on the outlet chamber 123 and ensure the continuity and stability of the water supply to the spray tower 110. The partition design allows the inlet water to enter the outlet chamber 123 after it has been initially stabilized in the inlet chamber 122, which can reduce the impact of water flow disturbance on the state of the liquid in the outlet chamber 123. At the same time, the baffle 121 can initially block some impurities in the inlet water or circulating return liquid, reduce the risk of nozzle blockage in the spray tower 110, and indirectly improve the efficiency of waste gas treatment.
[0036] In a preferred embodiment of this application, the volume of the water outlet chamber 123 is two-thirds the volume of the water inlet chamber 122.
[0037] Optionally, the volume of the outlet chamber 123 is smaller than that of the inlet chamber 122. The level control unit is located in the inlet chamber 122, which requires automatic water replenishment control. The smaller volume of the outlet chamber 123 allows the inlet chamber 122 to retain more space to receive tap water replenishment and buffer water flow fluctuations. When the inlet chamber 122 experiences brief fluctuations due to water replenishment or level changes, sufficient volume redundancy prevents rapid liquid overflow or supply interruption, ensuring more stable level control by the level control unit.
[0038] The waste gas treatment device 100 includes a spray tower 110, a water tank 120, a liquid level control unit, a control unit 140, and a chemical dosing unit 150. The water tank 120 is connected to a first inlet pipe 160 for replenishing water into the tank. The water tank 120 is also connected to the inner cavity of the spray tower 110 via a pipe for supplying water to the spray tower 110. The liquid level control unit is located on the first inlet pipe 160 and controls the opening and closing of the first inlet pipe 160 based on the liquid level in the water tank 120. It opens the water supply when the liquid level is low and closes it when the liquid level is high. This eliminates the need for manual monitoring of the liquid level and valve operation, solving the problems of time-consuming and labor-intensive manual water replenishment, which affects work efficiency, and avoiding the risk of overflow due to excessively high liquid levels or water shortage due to excessively low liquid levels, thus ensuring a stable liquid level in the water tank 120. A pH probe is installed inside the spray tower 110, and the pH probe is connected to the control unit 140 via a signal connection. The probe continuously collects the pH value of the chemical solution inside the spray tower 110 and transmits it to the control unit 140, ensuring that the control unit 140 can obtain the acidity and alkalinity status of the chemical solution in a timely manner, providing data support for subsequent precise dosing. The dosing unit 150 is used to hold the chemical solution, and the outlet of the dosing unit 150 is connected to the inner cavity of the spray tower 110, avoiding the cumbersome operation of manual dosing and ensuring that the agent can be accurately delivered into the spray tower 110, improving the convenience of dosing. The control unit 140 is signal-connected to the dosing unit 150. The control unit 140 is used to receive the detection signal emitted by the pH probe and drive the dosing unit 150 to flow the chemical solution into the spray tower 110 according to the detection signal. The control unit 140 automatically drives the dosing unit 150 to add the agent according to the preset range, replacing the manual dosing method based on experience, ensuring that the pH value of the chemical solution is stable within the optimal treatment range. The chemical solution is sprayed by the nozzles of the spray tower 110. The aforementioned waste gas treatment device 100 can accurately control the pH value of the chemical solution in the spray tower 110 and achieve automatic water replenishment, thereby reducing labor costs and improving treatment efficiency and reliability.
[0039] In one possible implementation of this application, such as Figure 2 As shown, the dosing unit 150 includes a dosing tank 151 and a dosing pump 152. The dosing tank 151 is used to hold the liquid medicine. The dosing tank 151 is connected to the inner cavity of the spray tower 110 through a dosing pipe 153. The dosing pump 152 is installed on the dosing pipe 153.
[0040] Specifically, a stirring element can be installed inside the dosing tank 151 to stir the medicine solution contained in the dosing tank 151 evenly; the dosing tank 151 can be installed on top of the water tank 120 to improve the stability of the device; the dosing tank 151 is connected to the inner cavity of the spray tower 110 through the dosing pipe 153, and the dosing pump 152 can automatically and quickly pump the medicine solution in the dosing tank 151 into the spray tower 110 through the dosing pipe 153 to improve the efficiency and reliability of dosing.
[0041] In one specific embodiment of this application, the dispensing tank 151 contains a pre-prepared medicinal solution. In another specific embodiment, the dispensing tank 151 may also contain tablets. Water is added to the dispensing tank 151, and a stirring element is used to dissolve the tablets into a medicinal solution. Figure 2 As shown, the waste gas treatment device 100 further includes a second water inlet pipe 170, one end of which is connected to the first water inlet pipe 160 and the other end of which is connected to the drug preparation tank 151. The water source in the first water inlet pipe 160 can enter the drug preparation tank 151 through the second water inlet pipe 170 to dissolve the tablets in the drug preparation tank 151, prepare a drug solution, and improve the drug preparation efficiency.
[0042] Optionally, such as Figure 3 As shown, the second water inlet pipe 170 is equipped with a second valve 171, which is used to control the opening and closing of the second water inlet pipe 170. The second valve 171 can be manually opened and closed to control whether water flows into the medicine preparation tank 151, realizing the flexibility and controllability of the medicine preparation process.
[0043] For example, such as Figure 3 As shown, the exhaust gas treatment device 100 also includes a circulating water pump 180. The circulating water pump 180 is connected to the side of the inner cavity of the water tank 120 away from the first water inlet pipe 160. The circulating water pump 180 is connected to the nozzles in the spray tower 110 through the circulating water inlet pipe 181. The inner cavity of the spray tower 110 is connected to the inner cavity of the water tank 120 through the circulating water outlet pipe 182.
[0044] Specifically, the liquid medicine in the outlet chamber 123 of the water tank 120 is pressurized by the circulating water pump 180 and enters the nozzle through the circulating water inlet pipe 181, forming atomized droplets. Some of the atomized droplets react with the waste, while the unreacted atomized droplets fall into the inner cavity of the spray tower 110 and flow back into the outlet chamber of the water tank 120 through the circulating water outlet pipe 182. This cycle is repeated continuously, avoiding waste caused by single-use of liquid and preventing interruption of spraying, thus ensuring the continuity of waste treatment.
[0045] For example, such as Figure 4As shown, the waste gas treatment device 100 also includes an overflow pipe 190, which is connected to the inner cavity of the spray tower 110. The overflow pipe 190 is used to discharge waste liquid from the spray tower 110, preventing excessive liquid accumulation in the inner cavity of the spray tower 110 and thus improving the reliability of the waste gas treatment device 100. The overflow pipe 190 can be connected to a wastewater treatment station for centralized treatment of the discharged waste liquid, preventing direct discharge of waste liquid and resulting air or soil pollution. The above description is merely an optional embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
Claims
1. A waste gas treatment device, characterized in that, The system includes a spray tower (110), a water tank (120), a liquid level control unit, a control unit (140), and a dosing unit (150). The water tank (120) has a first inlet pipe (160) connected to both sides of the spray tower (110). The first inlet pipe (160) supplies water to both the water tank (120) and the spray tower (110). The liquid level control unit is located on the first inlet pipe (160) and controls the opening and closing of the first inlet pipe (160) according to the liquid level in the water tank (120). The spray tower (110)... 0) A pH probe is installed inside, and the pH probe is connected to the control unit (140) by signal. The dosing unit (150) is used to hold the medicine solution, and the medicine solution outlet of the dosing unit (150) is connected to the inner cavity of the spray tower (110). The control unit (140) is connected to the dosing unit (150) by signal. The control unit (140) is used to receive the detection signal emitted by the pH probe and drive the dosing unit (150) to flow the medicine solution into the spray tower (110) according to the detection signal. The medicine solution is sprayed by the nozzles in the spray tower (110).
2. The waste gas treatment device according to claim 1, characterized in that, The dosing unit (150) includes a dosing tank (151) and a dosing pump (152). The dosing tank (151) is used to hold the liquid medicine. The dosing tank (151) is connected to the inner cavity of the spray tower (110) through a dosing pipe (153). The dosing pump (152) is installed on the dosing pipe (153).
3. The waste gas treatment device according to claim 2, characterized in that, The waste gas treatment device (100) also includes a second water inlet pipe (170), one end of which is connected to the first water inlet pipe (160) and the other end is connected to the medicine dispensing tank (151).
4. The waste gas treatment device according to claim 1, characterized in that, The inner cavity of the water tank (120) is provided with a partition (121), which is used to divide the inner cavity of the water tank (120) into an inlet cavity (122) and an outlet cavity (123). The first inlet pipe (160) is connected to the inlet cavity (122), and the outlet cavity (123) is connected to the inner cavity of the spray tower (110) through a pipe. A through hole (1211) is provided on the partition (121), and the inlet cavity (122) and the outlet cavity (123) are connected by the through hole (1211).
5. The waste gas treatment device according to claim 1 or 4, characterized in that, The waste gas treatment device (100) further includes a circulating water pump (180), which is connected to the side of the inner cavity of the water tank (120) away from the first water inlet pipe (160). The circulating water pump (180) is connected to the nozzles inside the spray tower (110) through the circulating water inlet pipe (181), and the inner cavity of the spray tower (110) is connected to the inner cavity of the water tank (120) through the circulating water outlet pipe (182).
6. The waste gas treatment device according to claim 4, characterized in that, The volume of the outlet cavity (123) is smaller than that of the inlet cavity (122).
7. The waste gas treatment device according to claim 1, characterized in that, The first water inlet pipe (160) is equipped with a first valve (161), which is used to control the opening and closing of the first water inlet pipe (160).
8. The waste gas treatment device according to claim 3, characterized in that, The second water inlet pipe (170) is equipped with a second valve (171), which is used to control the opening and closing of the second water inlet pipe (170).
9. The waste gas treatment device according to claim 1, characterized in that, The liquid level control unit is a float valve (130), which is located at the inlet of the first water inlet pipe (160).
10. The waste gas treatment device according to claim 1, characterized in that, The waste gas treatment device (100) also includes an overflow pipe (190), which is connected to the inner cavity of the spray tower (110) and is used to discharge the waste liquid in the spray tower (110).