High-efficiency multi-stage spray integrated tower

Abstract

This invention proposes a high-efficiency multi-stage spray tower, comprising a tower body, multi-stage spray layers located within the tower body, a storage tank for storing spray liquid, and a pressurized conveying device for transporting the spray liquid from the storage tank to the multi-stage spray layers. The pressurized conveying device includes multiple supply pumps corresponding to the number of stages in the multi-stage spray layers. The outlet pipe of each supply pump is connected to the corresponding stage spray layer via a first supply valve. The outlet pipe of each supply pump is also connected to the adjacent stage spray layer via a second supply pipe. A second supply valve is provided on both the first and second supply pipes. By setting up redundant second supply pipes, this invention can quickly switch the opening and closing states of relevant valves when a stage supply pump fails, achieving series coordinated supply of liquid from adjacent stage supply pumps. This maintains a stable flow field within the tower without requiring shutdown, making it particularly suitable for industrial scenarios with continuous production requirements.

Description

Technical Field

[0001] This utility model belongs to the field of spray towers, specifically relating to a high-efficiency multi-stage integrated spray tower. Background Technology

[0002] The integrated spray tower is a core piece of equipment in industrial waste gas treatment systems, primarily used for gas purification, cooling, dust removal, and the efficient removal of harmful components (such as acidic gases like SO2, NOx, HCl, and HF, as well as particulate matter). Its working principle involves full contact between the spray liquid and the polluted gas, utilizing physical absorption and chemical reactions to remove pollutants. Spray towers offer advantages such as simple structure, flexible operation, strong adaptability, and high treatment efficiency, and are widely used in waste gas treatment in industries such as chemical, power, metallurgy, and waste incineration.

[0003] Currently, the most common multi-stage integrated spray towers mainly adopt the following two structural forms:

[0004] 1) Shared liquid supply pump system, such as the multi-stage spray tower disclosed in CN202122931915.2 and CN202121625297.2, in which the multi-stage spray layers share the same set of liquid supply pumps and main pipelines, and the flow rate of each stage of spray liquid is distributed through branch valves. However, there is a serious defect that a single pump failure can cause the entire tower spraying to be interrupted, which greatly affects the continuity of production.

[0005] 2) A graded circulation system, such as a multi-stage spray fluidized tail gas scrubbing tower disclosed in CN201920138651.5, in which each spray stage is equipped with an independent liquid supply pump. By configuring pressure pumps separately for the high and low flow pipes in the circulating water system, the spray pressure is ensured to be stable. Although the pressure regulation problem is solved, there is still a defect that the spray function of a certain stage will be completely lost when the liquid supply pump of a certain stage fails, and the spraying of the whole tower may even be interrupted due to the system protection mechanism. Utility Model Content

[0006] To address the technical problems existing in the prior art, this utility model provides a high-efficiency multi-stage spray integrated tower.

[0007] In this embodiment of the invention, the high-efficiency multi-stage spray tower includes a tower body with an air inlet and an air outlet, a multi-stage spray layer capable of spraying spray liquid located within the tower body and spaced apart along the height of the tower body, a storage tank for storing the spray liquid, and a pressurized conveying device for pressurizing and conveying the spray liquid in the storage tank to the multi-stage spray layer; the pressurized conveying device includes multiple liquid supply pumps corresponding to the number of stages of the multi-stage spray layer, the outlet pipe of each liquid supply pump is connected to the corresponding stage of the spray layer through a first liquid supply pipe, and the outlet pipe of each liquid supply pump is also connected to a second liquid supply pipe in parallel with the first liquid supply pipe. The liquid supply lines are connected to the adjacent spray layers. Each first liquid supply line is equipped with a first liquid supply valve, and each second liquid supply line is equipped with a second liquid supply valve. By opening the first liquid supply valve corresponding to the liquid supply pump and closing the second liquid supply valve, the liquid supply pump can supply spray liquid to the corresponding spray layer through the connected first liquid supply line. By opening the first liquid supply valve and the second liquid supply valve corresponding to the liquid supply pump, the liquid supply pump can supply spray liquid to the corresponding spray layer through the connected first liquid supply line and simultaneously supply spray liquid to the adjacent spray layer through the second liquid supply line.

[0008] Compared with the prior art, the beneficial effects of the superior technical solution of this utility model include:

[0009] 1. This utility model, by setting a first liquid supply valve and redundant second liquid supply pipelines and second liquid supply valves, can quickly switch the opening and closing state of relevant valves when a certain stage liquid supply pump fails, realizing the series coordinated liquid supply of adjacent stage liquid supply pumps, thereby maintaining the stability of the flow field in the tower without stopping the machine, greatly improving the continuity and reliability of system operation, and is especially suitable for industrial scenarios such as chemical industry with strict requirements for production continuity.

[0010] 2. By installing shut-off valves and flange connections on the inlet and outlet pipelines of the liquid supply pump, the fluid passage can be quickly cut off in case of pump failure. The flange connection structure also enables rapid separation and installation of the faulty pump and pipeline, significantly shortening maintenance time, improving system maintainability, and reducing downtime losses.

[0011] 3. By installing pressure gauges at each liquid supply port of the tower, pressure feedback signals can be obtained in real time when adjusting the speed of the corresponding liquid supply pump and the opening of the first and second liquid supply valves, forming a closed-loop control system. This ensures that the liquid supply pressure is accurately and stably maintained within the set range, thereby ensuring the flow rate of each spray layer is stable and improving the overall control accuracy and operational controllability of the multi-stage spray layer.

[0012] 4. The pressure sensor monitors the outlet pressure of the liquid supply pump in real time and links with the controller. When the pressure is detected to be abnormally low below the set pressure threshold, the system automatically performs a series of operations such as stopping the liquid supply pump, closing the first liquid supply valve, and opening the backup second liquid supply valve. This achieves full automation of fault response and system switching, effectively avoiding processing delays or misoperations caused by manual judgment and operation delays. It improves the system's intelligent handling capability and overall stability in the face of sudden faults, while reducing the labor intensity of operators. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the high-efficiency multi-stage spray integrated tower in Example 1.

[0014] Figure 2 This is a schematic diagram of the structure of the high-efficiency multi-stage spray integrated tower in Example 2.

[0015] The reference numerals in the accompanying drawings include: tower body 10, air inlet 11, air outlet 12, liquid supply port 13, spray layer 20, spray frame 21, nozzle 22, liquid storage tank 30, liquid outlet 31, main liquid supply pipe 32, filter device 33, drain outlet 34, pressurized conveying device 40, liquid supply pump 41, inlet pipeline 42, shut-off valve 421, outlet pipeline 43, check valve 431, pressure sensor 432, first liquid supply pipeline 44, first liquid supply valve 441, second liquid supply pipeline 45, second liquid supply valve 451, flange connection structure 46, and pressure gauge 47. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] Example 1

[0018] This embodiment provides a high-efficiency multi-stage spray integrated tower, such as Figure 1As shown, in a preferred embodiment, the high-efficiency multi-stage spray tower includes a tower body 10 with an inlet 11 and an outlet 12, a multi-stage spray layer 20 located within the tower body 10 and spaced at intervals along the height of the tower body 10, capable of spraying spray liquid, a storage tank 30 for storing the spray liquid, and a pressurized conveying device 40 for pressurizing and conveying the spray liquid in the storage tank 30 to the multi-stage spray layer 20. The gas to be treated enters through the side wall of the tower body 10, flows upward within the tower body 10, and comes into full contact with the droplets sprayed from the multi-stage spray layer 20. Through physical absorption and chemical reaction, the pollutants contained therein are effectively removed, and the purified gas is finally discharged through the outlet 12 at the top of the tower body 10. The specific gas treatment process and purification principle all adopt existing mature technologies and will not be described in detail here.

[0019] In this utility model, the pressurized conveying device 40 includes multiple liquid supply pumps 41 corresponding to the number of stages of the multi-stage spray layer 20. The outlet pipe 43 of each liquid supply pump 41 is connected to the corresponding stage of the spray layer 20 through a first liquid supply pipe 44. The outlet pipe 43 of each liquid supply pump 41 is also connected to the adjacent stage of the spray layer 20 through a second liquid supply pipe 45 arranged in parallel with the first liquid supply pipe 44. Each first liquid supply pipe 44 is provided with a first liquid supply valve 441, and each second liquid supply pipe 45 is provided with a second liquid supply valve 451. By opening the first supply valve 441 corresponding to the supply pump 41 and closing the second supply valve 451, the supply pump 41 can supply spray liquid to the corresponding spray layer 20 through the first supply pipeline 44. By opening the first supply valve 441 and the second supply valve 451 corresponding to the supply pump 41, the supply pump 41 can supply spray liquid to the corresponding spray layer 20 through the first supply pipeline 44 and simultaneously supply spray liquid to the adjacent spray layer 20 through the second supply pipeline 45.

[0020] This invention can achieve multiple liquid supply modes by controlling the opening and closing states of the valves corresponding to the liquid supply pump 41: when the first liquid supply valve 441 is opened and the second liquid supply valve 451 is closed, the liquid supply pump 41 independently supplies liquid to the spray layer 20 of this stage through the first liquid supply pipeline 44; when the first liquid supply valve 441 and the second liquid supply valve 451 are opened at the same time, the liquid supply pump 41 can synchronously supply liquid to the spray layer 20 of this stage through the first liquid supply pipeline 44 and to the adjacent spray layer 20 through the second liquid supply pipeline 45.

[0021] This embodiment uses a three-stage spray layer 20 as an example for explanation. Each spray layer 20, from bottom to top, is a first-stage, second-stage, and third-stage spray layer, and corresponding first-stage, second-stage, and third-stage liquid supply pumps 41 are provided. The first-stage liquid supply pump 41 is connected to a first liquid supply pipeline 44 leading to the first-stage spray layer 20 and a second liquid supply pipeline 45 leading to the second-stage spray layer 20. In addition to being connected to the first liquid supply pipeline 44 leading to the second-stage spray layer 20, the second-stage liquid supply pump 41 is also connected to two second liquid supply pipelines 45, leading to the first-stage and third-stage spray layers 20 respectively. The third-stage liquid supply pump 41 is connected to a first liquid supply pipeline 44 leading to the third-stage spray layer 20 and a second liquid supply pipeline 45 leading to the second-stage spray layer 20.

[0022] When the high-efficiency multi-stage spray tower is operating normally, all liquid supply pumps 41 are in working condition. At this time, the first liquid supply valve 441 is open and the second liquid supply valve 451 is closed. Each level of liquid supply pump 41 supplies liquid independently to the corresponding spray layer 20 through its first liquid supply pipeline 44: that is, the first-stage liquid supply pump supplies liquid to the first-stage spray layer, the second-stage liquid supply pump supplies liquid to the second-stage spray layer, and the third-stage liquid supply pump supplies liquid to the third-stage spray layer.

[0023] When a certain stage supply pump 41 malfunctions (taking the shutdown of the second stage supply pump 41 as an example), the malfunctioning supply pump 41 and its corresponding first supply valve 441 are shut down, and simultaneously the second supply valves 451 corresponding to the two adjacent stage supply pumps 41 (the first stage supply pump 41 and the third stage supply pump 41) are opened. At this time, in addition to supplying liquid to their respective spray layers 20, the first stage and third stage supply pumps also jointly supply spray liquid to the second stage spray layer 20 through their respective second supply pipelines 45, thereby maintaining the continuous operation of the system and avoiding unplanned shutdowns.

[0024] After the faulty liquid supply pump 41 is repaired, by restoring the open state of the first liquid supply valve 441 and the closed state of the second liquid supply valve 451, the normal operation mode in which each level of liquid supply pump 441 independently supplies liquid to the corresponding level of spray layer 20 can be switched back.

[0025] In this embodiment, the first liquid supply valve 441 is a normally open valve and the second liquid supply valve 451 is a normally closed valve. The switching of the opening and closing states of the first liquid supply valve 441 and the second liquid supply valve 451 can be manually operated by the worker according to the operating procedures to realize the switching of the emergency liquid supply mode.

[0026] It should be noted that, in practice, the liquid supply pressure of each spray layer 20 can be ensured by adjusting the speed of the liquid supply pump 41 and the opening of the first liquid supply valve 441 and the second liquid supply valve 451. The specific pressure adjustment is a mature existing technology and will not be described in detail here.

[0027] In a preferred embodiment, both the inlet pipe 42 and the outlet pipe 43 of the liquid supply pump 41 are equipped with shut-off valves 421. When the liquid supply pump 41 fails, the fluid supply to the pipe section where the liquid supply pump 41 is located can be quickly cut off by closing the shut-off valves 421 on its inlet pipe 42 and outlet pipe 43, thereby facilitating the isolation and maintenance of the faulty liquid supply pump 41.

[0028] More preferably, the inlet and outlet ends of the liquid supply pump 41 are connected to its inlet pipe 42 and outlet pipe 43 respectively through a flange connection structure 46. The flange connection structure 46 adopts a quick flange connection structure, which can realize the quick disassembly and assembly of the liquid supply pump 41 and the pipe, significantly shortening the disassembly and replacement time of the faulty liquid supply pump 41 and improving the system maintenance efficiency.

[0029] More preferably, a check valve 431 (e.g., type H44H) is installed on the outlet pipe 43 of the liquid supply pump 41. This check valve 431 can be located downstream of the shut-off valve 421. The check valve 431 can effectively prevent backflow of liquid due to gravity or system pressure when the liquid supply pump 41 suddenly stops, avoiding damage to components such as pump blades caused by backflow liquid impact, thereby protecting the liquid supply pump 41 and extending its service life.

[0030] In another preferred embodiment, the storage tank 30 is located at the bottom of the tower body 10 and communicates with the interior of the tower body 10. After the spray liquid from the spray layer 20 comes into full contact with the exhaust gas, it falls back into the storage tank 30 at the bottom of the tower body 10 under the action of gravity. The outlet 31 of the storage tank 30 is connected to the main outlet pipe 32 equipped with a filter device 33. The inlet pipes 42 of multiple liquid supply pumps 41 are all connected to the outlet end of the main outlet pipe 32. Impurities in the spray liquid settle to the bottom of the storage tank 30. The outlet 31 is located on the middle side wall of the storage tank 30 to reduce the amount of impurities entering the main outlet pipe 32. At the same time, the filter device 33 adopts a combination of coarse and fine filters to perform graded filtration of the liquid entering the liquid supply pumps 41, effectively reducing the risk of blockage caused by impurities and extending the service life of the liquid supply pumps 41.

[0031] More preferably, the bottom of the liquid storage tank 30 adopts a downward inclined structure, and a drain port 34 with a drain valve is provided at its lowest point to facilitate the efficient collection and discharge of impurities deposited at the bottom of the liquid storage tank 30.

[0032] In this invention, each spray layer 20 includes a spray frame 21 with a fluid channel fixed in the tower body 10, and a plurality of nozzles 22 installed on the spray frame 21 and communicating with the fluid channel. The outlet end of the pressurized conveying device 40 is connected to the fluid channel of the spray frame 21 and is used to convey the pressurized spray liquid into the fluid channel and spray it out through the nozzles 22. Among them, the nozzles 22 are preferably solid cone nozzles 22 with excellent atomization performance and anti-clogging (such as a solid cone spiral nozzle 22 in a spray tower disclosed in CN202210591396.6, a micro-atomizing solid cone nozzle 22 disclosed in CN202022951311.X, a solid cone pressure atomizing nozzle 22 disclosed in CN201710419321.9, or a single fluid solid cone atomizing nozzle 22 disclosed in CN202421345426.6).

[0033] Preferably, in each spray layer 20, three nozzles 22 are grouped together, and the three nozzles 22 in each group are arranged closely on the spray frame 21 in an equilateral triangle layout, so that the sum of the theoretical total coverage area of ​​all nozzles 22 at the calibrated distance reaches 200% of the cross-sectional area of ​​the tower body 10 of that layer (i.e., 200% atomization coverage). This highly overlapping layout ensures that there are no spray blind spots in the cross-section of the tower body 10 and greatly enhances the degree of turbulent mixing of the gas and liquid phases, thereby significantly improving the collection and absorption efficiency of pollutants. In addition, the high redundancy design also provides the spray layer 20 with excellent fault tolerance performance, and the performance degradation of a single nozzle 22 will not have a decisive impact on the overall purification effect.

[0034] In another preferred embodiment, the tower body 10 is provided with multiple liquid supply ports 13, each connected to a spray layer 20. The three-stage spray layer 20 has three liquid supply ports 13, which are connected to the fluid channels of the spray frame 21. The outlet end of the pressurized conveying device 40 is connected to each of the three liquid supply ports 13 and supplies spray liquid to the spray layer 20 through these ports. Each liquid supply port 13 is equipped with a pressure gauge 47 for real-time monitoring of the liquid supply pressure. When adjusting the liquid supply pressure by regulating the speed of the corresponding liquid supply pump 41 and the opening of the first liquid supply valve 441 and the second liquid supply valve 451, the pressure gauge 47 acts as a pressure feedback element, forming a closed-loop control system. This ensures that the liquid supply pressure is stably maintained within the set range, thereby ensuring stable flow rates in each stage of the spray layer 20 and improving the overall control accuracy and operational controllability of the multi-stage spray layer.

[0035] Example 2

[0036] The structural principle of this embodiment is basically the same as that of Embodiment 1, except that, as Figure 2As shown, each liquid supply pump 41 is equipped with a pressure sensor 432 on its outlet pipe 43 for monitoring the outlet pressure of the liquid supply pump 41. For example, the pressure sensor 432 is located downstream of the shut-off valve 421. This pressure sensor 432 is used to monitor the pump's outlet pressure in real time, and the operator can promptly grasp the operating status of the liquid supply pump 41 based on the pressure value it feeds back. For example, when the outlet pressure of the liquid supply pump 41 is detected to be lower than the set pressure threshold (such as 85% of the rated liquid supply pressure), it can be determined that the liquid supply pump 41 may be blocked or has other faults, providing a clear basis for subsequent maintenance operations.

[0037] In another preferred embodiment, each liquid supply pump 41 is equipped with an alarm, and the signal output terminal of each pressure sensor 432 is connected to the enable terminal of the corresponding alarm. When the pressure sensor 432 detects that the outlet pressure of the liquid supply pump 41 is lower than the set pressure threshold, the alarm of the corresponding liquid supply pump 41 sounds an alarm, which makes it easier for the operator to quickly locate the faulty liquid supply pump 41 and take timely measures.

[0038] In another preferred embodiment, the signal output terminals of multiple pressure sensors 432 are connected to the pressure input terminals of the controller. When any pressure sensor 432 detects that the outlet pressure of the corresponding liquid supply pump 41 is lower than a set pressure threshold, the controller controls the faulty liquid supply pump 41 and its corresponding first liquid supply valve 441 to close, and simultaneously controls the second liquid supply valve 451 corresponding to the adjacent stage liquid supply pump 41 to open. (The controller includes multiple comparators that correspond one-to-one with the pressure sensors 432. The first signal input terminal of each comparator is connected to the signal output terminal of its corresponding pressure sensor 432, and the second signal input terminal of the comparator is stored with its corresponding pressure threshold.) The comparator is connected to the storage device, and its output is connected to the opening control terminal of the corresponding first liquid supply valve 441 and the closing control terminal of the corresponding second liquid supply valve 451. The output of the comparator is also connected to the closing control terminal of the corresponding liquid supply pump 41, the closing control terminal of the first liquid supply valve 441, and the opening control terminal of the second liquid supply valve 451 corresponding to the adjacent stage liquid supply pump 41 through a NOT gate. This realizes the full automation of the liquid supply pipeline switching operation, improves the response speed and processing accuracy of the liquid supply pump 41 failure, avoids the delay and misoperation risk of manual intervention, effectively ensures the continuous and stable operation of the high-efficiency multi-stage spray integrated tower, and reduces the maintenance burden of operators.

[0039] When pressure sensor 432 detects that the outlet pressure of a certain stage supply pump 41 (such as the second stage supply pump 41) is lower than the set pressure threshold, the controller immediately issues a command to shut down the faulty supply pump 41 and its corresponding first supply valve 441 (electric / pneumatic type), and open the second supply valve 451 corresponding to the adjacent stage supply pump 41. Simultaneously, the controller adjusts the rotational speed of the adjacent stage supply pump 41 to maintain a stable total output pressure of the pressurized delivery device 40. This automatic control logic (including signal detection, valve-pump linkage, pressure PID regulation, etc.) is a conventional technique for fault switching in redundant pipeline systems, and its specific implementation is prior art and will not be described further here.

[0040] In another embodiment of this utility model, the first liquid supply valve 441 is a normally open valve, and the second liquid supply valve 451 is a normally closed valve. The opening control terminal of the first liquid supply valve 441 and the closing control terminal of the second liquid supply valve 451 corresponding to the same stage liquid supply pump 41 are connected to the first control terminal of the controller (i.e., the output terminal of the corresponding comparator). When the high-efficiency multi-stage spray integrated tower is operating normally, the first liquid supply valve 441 is open, the second liquid supply valve 451 is closed, and the liquid is supplied by the same stage liquid supply pump 41 through the first liquid supply pipeline 44; The closing control terminal of the first-stage liquid supply pump 41, the closing control terminal of the corresponding first liquid supply valve 441, and the opening control terminal of the second liquid supply valve 451 corresponding to the adjacent stage liquid supply pump 41 are connected to the second control terminal of the controller (i.e., the output terminal of the corresponding comparator after passing through the NOT gate). When a certain stage liquid supply pump 41 fails, the stage liquid supply pump 41 and the corresponding first liquid supply valve 441 are closed, and the second liquid supply valve 451 corresponding to the adjacent stage liquid supply pump 41 is opened, so that the adjacent stage liquid supply pump 41 supplies liquid through the second liquid supply pipeline 45.

[0041] The pressure sensor 432 of this utility model is a digital pressure sensor, and the comparator is a digital comparator. If the pressure sensor 432 is an analog pressure sensor, the comparator is an analog comparator. The output of the analog comparator is connected to each control terminal after analog-to-digital conversion.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-efficiency multi-stage spray tower, comprising a tower body with an air inlet and an air outlet, a multi-stage spray layer capable of spraying spray liquid located within the tower body and spaced apart along the height of the tower body, a storage tank for storing the spray liquid, and a pressurized conveying device for pressurizing and conveying the spray liquid in the storage tank to the multi-stage spray layer, characterized in that... ； The pressurized delivery device includes multiple liquid supply pumps corresponding to the number of stages in the multi-stage spray layer. The outlet pipe of each liquid supply pump is connected to the corresponding stage of the spray layer through a first liquid supply pipe. The outlet pipe of each liquid supply pump is also connected to the adjacent stage of the spray layer through a second liquid supply pipe arranged in parallel with the first liquid supply pipe. Each first liquid supply pipe is equipped with a first liquid supply valve, and each second liquid supply pipe is equipped with a second liquid supply valve. By opening the first liquid supply valve corresponding to the liquid supply pump and closing the second liquid supply valve, the liquid supply pump can supply spray liquid to the corresponding stage of the spray layer through the first liquid supply pipe connected to it. By opening the first liquid supply valve and the second liquid supply valve corresponding to the liquid supply pump, the liquid supply pump can supply spray liquid to the corresponding stage of the spray layer through the first liquid supply pipe connected to it, and simultaneously supply spray liquid to the adjacent stage of the spray layer through the second liquid supply pipe.

2. The high-efficiency multi-stage spray integrated tower according to claim 1, characterized in that, Both the inlet and outlet pipes of the liquid supply pump are equipped with shut-off valves; And / or the inlet and outlet ends of the liquid supply pump are connected to their respective inlet and outlet pipelines via flange connections; and / or a check valve is installed on the outlet pipeline of the liquid supply pump.

3. The high-efficiency multi-stage spray integrated tower according to claim 1, characterized in that, The liquid storage tank is located at the bottom of the tower body and communicates with the interior of the tower body. The liquid outlet of the liquid storage tank is connected to a main liquid outlet pipe equipped with a filter device. The inlet pipes of multiple liquid supply pumps are all connected to the outlet end of the main liquid outlet pipe.

4. The high-efficiency multi-stage spray integrated tower according to claim 1, characterized in that, Each spray layer includes a spray frame with a fluid channel fixed in the tower body, and a number of nozzles installed on the spray frame and communicating with the fluid channel. The outlet end of the pressurized conveying device is connected to the fluid channel of the spray frame and is used to convey the pressurized spray liquid into the fluid channel and spray it out through the nozzles.

5. The high-efficiency multi-stage spray integrated tower according to claim 4, characterized in that, The nozzle is a solid cone nozzle.

6. The high-efficiency multi-stage spray integrated tower according to claim 1, characterized in that, The tower body is provided with multiple liquid supply ports that are connected to each spray layer. The outlet end of the pressurized conveying device is connected to the multiple liquid supply ports and provides spray liquid to the spray layer through the liquid supply ports. A pressure gauge is provided at each liquid supply port.

7. The high-efficiency multi-stage spray integrated tower according to any one of claims 1-6, characterized in that, Each of the aforementioned supply pumps is equipped with a pressure sensor on its outlet pipeline for monitoring the outlet pressure of the supply pump.

8. The high-efficiency multi-stage spray integrated tower according to claim 7, characterized in that, Each of the liquid supply pumps is equipped with an alarm. The signal output terminal of each pressure sensor is connected to the enable terminal of the corresponding alarm. When the pressure sensor detects that the outlet pressure of the liquid supply pump is lower than the set pressure threshold, the alarm of the corresponding liquid supply pump will sound an alarm.

9. The high-efficiency multi-stage spray integrated tower according to claim 7, characterized in that, The signal output terminals of the multiple pressure sensors are connected to the pressure input terminal of the controller. When any pressure sensor detects that the outlet pressure of the corresponding liquid supply pump is lower than the set pressure threshold, the controller controls the faulty liquid supply pump and its corresponding first liquid supply valve to close, and at the same time controls the second liquid supply valve corresponding to the adjacent liquid supply pump to open.

10. The high-efficiency multi-stage spray integrated tower according to claim 9, characterized in that, The first liquid supply valve is a normally open valve, and the second liquid supply valve is a normally closed valve. The opening control terminal of the first liquid supply valve corresponding to the same stage liquid supply pump and the closing control terminal of the second liquid supply valve are connected to the first control terminal of the controller. The closing control terminal of the same stage liquid supply pump, the closing control terminal of the corresponding first liquid supply valve, and the opening control terminal of the second liquid supply valve corresponding to the adjacent stage liquid supply pump are connected to the second control terminal of the controller.

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