A ferric chloride dosing anti-overflow and collection device

Abstract

The utility model relates to the technical field of chemical equipment discloses a ferric chloride dosing anti-overflow and collection device, including jar body, platform, dosing pipe, drainage component, collection component and liquid level switch, and drainage component sets up in the middle part of platform, including acid and alkali resistant tray, is equipped with drainage groove and discharge port in the tray, and collection component includes collection bucket and corrosion -resisting collection pipe, and collection pipe connects discharge port and collection bucket, and tray outside is detachably connected with jar body through dismounting component, and liquid level switch detects liquid level and is connected control system through signal line. The utility model discloses a double protection mechanism that liquid level switch initiatively monitors off equipment and drainage component passively collects overflow liquid, effectively solves the equipment corrosion and environmental pollution problem caused by the dripping or overflow in the ferric chloride dosing process, has the advantages of scientific structure, corrosion -resisting durable, convenient maintenance and high safety etc.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a ferric chloride dosing overflow prevention and collection device. Background Technology

[0002] Ferric chloride, a flocculant widely used in wastewater treatment and as an etching agent in the electronics industry, is extremely acidic and corrosive, and readily crystallizes after drying. In industrial production, storage tanks are typically used in conjunction with dosing pipeline systems for the storage and transport of chemicals. However, in actual dosing operations, there is a frequent risk of chemical spillage. This risk may stem from leaks due to aging seals at the dosing pipe connections, or from delays in the dosing control system causing the tank to overflow when full.

[0003] Existing chemical dosing and storage systems are typically simple in structure, focusing primarily on chemical storage and lacking specific overflow prevention and diversion designs. In the event of a spill, the highly corrosive ferric chloride solution accumulates directly on the top platform of the tank and flows down the outer wall to the ground. This uncontrolled overflow not only causes severe corrosion damage to the equipment's metal supports, fasteners, and the outer wall of the tank, significantly shortening its lifespan, but also results in yellow crystals formed after the spilled chemicals dry, which are difficult to clean, severely polluting the work environment and posing a potential threat to the personal safety of operators. Even with level alarms installed, they often cannot handle minor leaks at pipe joints, and there is a lack of effective means to collect and treat spilled liquid.

[0004] Therefore, this utility model proposes a ferric chloride dosing overflow prevention and collection device to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the lack of overflow prevention measures in existing ferric chloride dosing and storage equipment, once the dosing pipe leaks or the liquid level is too high and overflows, the highly corrosive agent will flow directly onto the surface of the tank and the ground, causing serious corrosion damage to the equipment, difficult crystal removal, and environmental pollution. This utility model aims to provide a ferric chloride dosing overflow prevention and collection device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a ferric chloride dosing overflow prevention and collection device, including: a tank, a platform installed on the top of the tank, and a dosing pipe located above the platform for conveying the agent; it also includes a diversion component disposed in the middle of the platform, a disassembly and assembly component installed on the outside of the diversion component for disassembly and assembly, a collection component installed at the outlet of the diversion component for collecting the overflowed agent, and a liquid level switch installed on the top of the tank for detecting the agent level.

[0007] The diversion assembly includes a tray fixedly connected to the top of the tank. A diversion groove for guiding liquid is recessed in the middle of the tray near the inner wall. A discharge port communicating with the diversion groove is opened on the side wall at the rear of the tray.

[0008] The collection assembly includes a collection bucket and a collection pipe. The two ends of the collection pipe are respectively sealed and connected to the discharge port and the collection bucket, thereby forming a connected drainage channel.

[0009] The assembly and disassembly assembly includes multiple fixing blocks fixedly connected to the outside of the tray. A bolt threaded to the top of the tank is installed in the middle of the fixing block. The tray can be fixed and disassembled by turning the bolt.

[0010] The liquid level switch is located on both sides of the drainage component. A signal transmission line is electrically connected to the outside of the liquid level switch. The end of the signal transmission line away from the liquid level switch is connected to the control system to realize liquid level monitoring and active control.

[0011] Preferably, a fixing plate is installed at the bottom of the tank, the fixing plate extends horizontally outward along the bottom edge of the tank, and the fixing plate is provided with mounting holes for stably fixing the tank to the ground or base, thereby enhancing the stability of the overall structure.

[0012] Preferably, the bottom of the tank is equipped with multiple support legs, which are arranged in an array to support the tank and suspend its bottom, facilitating bottom ventilation and cleaning maintenance.

[0013] Preferably, the tray is made of acid and alkali resistant rigid polyvinyl chloride, which has excellent chemical corrosion resistance and can withstand the erosion of high concentration ferric chloride solution for a long time, thus extending its service life.

[0014] Preferably, the tray is 600 mm by 400 mm in size. This size is optimized to effectively cover the potential dripping area below the dosing tube and provide ample space for the arrangement of the drainage channel.

[0015] Preferably, the collecting tube is made of polytetrafluoroethylene, which has an extremely low coefficient of surface friction and excellent corrosion resistance, and can prevent the medicine from adhering to the wall and leaving residue.

[0016] Preferably, the diameter of the collection tube is set to 25 mm. The larger inner diameter design can effectively prevent the pipe from being blocked due to the drying and crystallization of ferric chloride, ensuring smooth drainage.

[0017] Preferably, the tray is constructed such that when the medicine overflows from the inlet of the dosing pipe, the medicine flows into the middle of the tray, flows to both sides of the tray to the drainage groove located at the end of the side wall of the tray, and is guided by the drainage groove into the discharge port at the tail of the tray, enters the collection pipe through the discharge port, and finally enters the collection bucket, thus achieving passive physical collection.

[0018] Preferably, the liquid level switch is configured such that when the agent inside the tank reaches a set height, it transmits a signal to the control system via the signal transmission line, so that the control system can shut down the dosing equipment to achieve active overflow protection.

[0019] This utility model has the following beneficial effects: 1. This utility model, by setting up a cooperative structure of diversion component and collection component, uses a tray to receive the agent overflowing from the dosing pipe, and guides it through the diversion channel and discharge port to the collection tank below via a corrosion-resistant collection pipe. This solves the problem of agent overflow directly corroding the tank and polluting the ground during the existing ferric chloride dosing process, and achieves the technical effect of effectively collecting waste liquid and protecting the main body of the equipment and the safety of the on-site environment.

[0020] 2. This utility model solves the problem of untimely liquid level monitoring or the inability of a single physical collection to cope with continuous large-scale overflow by setting liquid level switches on both sides of the diversion component and connecting them to the control system, thus forming a double protection with the physical diversion structure. It achieves the technical effect of automatically shutting down the equipment to block the overflow from the source when a high liquid level is detected, while also collecting any accidental leaks.

[0021] 3. This utility model solves the problem of easy crystallization and adhesion of ferric chloride reagent, which makes it difficult to thoroughly clean the drainage components in situ. It achieves the technical effect of facilitating regular disassembly and maintenance, cleaning crystals and replacing components, and extending the service life of the device.

[0022] 4. This utility model solves the problems of conventional metal or ordinary plastic materials being easily corroded by strong corrosive ferric chloride and small pipes being easily blocked by the drying and crystallization of the reagent by using acid and alkali resistant rigid polyvinyl chloride to make the tray and large-diameter polytetrafluoroethylene to make the collection pipe. It achieves the technical effect of improving the durability, chemical stability and smooth drainage of the device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a ferric chloride dosing overflow prevention and collection device proposed in this utility model; Figure 2This is a schematic diagram of the support leg of a ferric chloride dosing overflow prevention and collection device proposed in this utility model; Figure 3 This is a schematic diagram of the tray of a ferric chloride dosing overflow prevention and collection device proposed in this utility model; Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0024] Legend: 1. Tank body; 2. Fixing plate; 3. Platform; 4. Liquid level switch; 5. Drainage assembly; 501. Tray; 502. Drainage channel; 503. Discharge port; 6. Signal transmission line; 7. Dosing pipe; 8. Collection assembly; 801. Collection bucket; 802. Collection pipe; 9. Disassembly assembly; 901. Fixing block; 902. Bolt; 10. Support leg. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in 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 a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0026] Please refer to Figures 1 to 4 This utility model provides a ferric chloride dosing overflow prevention and collection device, which aims to solve the problem that the existing ferric chloride dosing process lacks an effective overflow guidance and collection structure, resulting in highly corrosive agents contaminating the equipment surface and the surrounding environment.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the main body of the ferric chloride dosing overflow prevention and collection device includes a tank 1, a platform 3 fixedly connected to the top of the tank 1, a dosing pipe 7 set above the platform 3 for conveying the agent, a diversion component 5 installed in the middle of the platform 3 for guiding the overflowing agent, and a collection component 8 set at the outlet of the diversion component 5 for collecting waste liquid. All components work together to form a complete overflow prevention and collection system, effectively avoiding the corrosion hazards caused by the leakage of ferric chloride agent.

[0028] Tank 1 is the main container for storing medicine. A fixing plate 2 is installed at the bottom of tank 1 to stabilize and fix tank 1. The fixing plate 2 extends horizontally along the bottom edge of tank 1 and has mounting holes to facilitate fixing to the ground or base with fasteners such as bolts 902. At the same time, multiple support legs 10 are evenly installed at the bottom of tank 1 for support. The support legs 10 suspend the bottom of tank 1, which is convenient for cleaning and bottom ventilation. Platform 3 is horizontally fixed on the top of tank 1 as a mounting base for other functional components. Platform 3 has sufficient strength and corrosion resistance to support the drainage component 5 and other accessories.

[0029] The diversion assembly 5 is located in the middle area of ​​the platform 3, directly below the liquid outlet of the dosing pipe 7. It is used to receive and guide the overflow of the agent caused by overdosing or pipe leakage. The diversion assembly 5 includes a tray 501 fixedly connected to the top of the tank 1 and located on the platform 3. The tray 501 is made of acid and alkali resistant rigid polyvinyl chloride, which has excellent resistance to ferric chloride corrosion. The tray 501 is 600 mm x 400 mm in size, which is sufficient to cover the potential overflow area below the dosing pipe 7. A diversion groove 502 is provided in the middle of the tray 501 near the inner wall to guide the flow direction of the overflowing agent. The diversion groove 502 has a concave structure and uses gravitational potential energy to collect the liquid. A discharge port 503 is provided on the rear side wall of the tray 501. The discharge port 503 is connected to the end of the diversion groove 502, so that the agent collected in the diversion groove 502 can be smoothly discharged to the outside of the tray 501.

[0030] The collection assembly 8 is used to receive and store the waste liquid discharged from the drainage assembly 5. The collection assembly 8 includes a collection tank 801 and a collection pipe 802. The collection tank 801 is placed on the ground or a special support below the side of the tank body 1. The two ends of the collection pipe 802 are respectively connected to the discharge port 503 and the collection tank 801. Specifically, one end of the collection pipe 802 is fixedly inserted or threaded to the discharge port 503, and the other end extends and is inserted into the inside of the collection tank 801 to seal the overflowing agent into the collection tank 801 through the discharge port 503. The collection pipe 802 is made of polytetrafluoroethylene with a diameter of 25 mm. This material has extremely strong chemical inertness, and the 25 mm diameter can effectively prevent the pipe from being blocked due to the crystallization of the agent.

[0031] The outside of the diversion assembly 5 is equipped with a disassembly and assembly assembly 9 for easy disassembly and maintenance. The disassembly and assembly assembly 9 includes multiple fixing blocks 901 fixedly connected to the outer wall of the tray 501. The fixing blocks 901 are distributed at intervals along the circumference of the tray 501. Each fixing block 901 has a through hole in the middle and a bolt 902 is installed. The bolt 902 passes through the fixing block 901 and is threadedly connected to the top of the tank 1 or the platform 3, thereby firmly and detachably fixing the tray 501 to the platform 3, which makes it easy to remove the tray 501 for cleaning or replacement periodically.

[0032] A liquid level switch 4 is also installed on the top of the tank body 1. The liquid level switch 4 is used to detect the height of the agent inside the tank body 1 in real time and control the drug injection switch. There are at least two liquid level switches 4, which are installed on both sides of the diversion assembly 5. The probe part of the liquid level switch 4 extends into the tank body 1 through the platform 3. The outside of the liquid level switch 4 is electrically connected to a signal transmission line 6 for transmitting control signals. The end of the signal transmission line 6 away from the liquid level switch 4 is connected to an external control system. When the liquid level reaches the preset threshold, the liquid level switch 4 sends a signal to the control system through the signal transmission line 6, and the control system then executes the instruction to shut down the drug injection equipment.

[0033] To address the potential overflow and corrosion issues during ferric chloride dosing, this ferric chloride dosing overflow prevention and collection device also incorporates a complete physical diversion and recovery system through the special structure of the tray 501 in the diversion component 5 and the connection design with the collection component 8. Furthermore, this system works in conjunction with the active monitoring function of the level switch 4 to construct a dual protection mechanism.

[0034] Please refer to the following carefully. Figure 3 and Figure 4 The core structure and its interrelationships are described in detail below: The tray 501 in the drainage assembly 5 is securely and detachably installed on the platform 3 via the disassembly assembly 9. The bottom of the tray 501 is not completely flat; its central area is designed as a liquid receiving surface for initially receiving overflowing agents. The drainage channel 502, which is opened near the inner wall of the tray 501, extends along the inner circumference of the tray 501. The bottom height of the drainage channel 502 is lower than the height of the liquid receiving surface in the middle of the tray 501, forming a height difference to facilitate the natural flow of liquid. The cross-sectional shape of the drainage channel 502 is designed as U-shaped or V-shaped to reduce liquid residue on the wall. The drainage channel 502 is connected to the external environment through the discharge port 503 at its end. The discharge port 503 serves as the only liquid outflow channel on the tray 501, and its diameter matches the subsequent connected pipes.

[0035] The collection tube 802 in the collection assembly 8 serves as a connecting link. Its inlet end is tightly fitted or screwed onto the outside of the discharge port 503. The interface is sealed to prevent leakage. The tube body of the collection tube 802 is made of corrosion-resistant polytetrafluoroethylene with a smooth inner wall. The tube diameter is set at 25 mm. This size is optimized to meet the rapid discharge requirements of instantaneous overflow and effectively avoid the problem of tube diameter narrowing or blockage caused by the drying and crystallization of ferric chloride solution. The outlet end of the collection tube 802 hangs down naturally and extends into the collection tank 801, so that the entire discharge process is in a relatively closed state to prevent the splashing of the agent or the diffusion of volatile gases.

[0036] The disassembly and assembly component 9 ensures structural stability while also providing excellent maintainability of the device. The fixing block 901 is integrally formed or welded to the outer peripheral wall of the tray 501. Each fixing block 901 protrudes outward to form a mounting ear structure. The bolt 902 passes through the through hole on the fixing block 901 and is screwed into the corresponding threaded hole on the top of the platform 3 or the tank 1. When the tray 501 needs to be deeply cleaned or replaced, the entire drainage component 5 can be removed simply by loosening the bolt 902. There is no need to disassemble the dosing pipe 7 or other complex parts, which greatly simplifies the operation and maintenance process.

[0037] In addition, the level switch 4, as the core component of active defense, has its probe end vertically passing through the platform 3 and extending into the inner cavity of the tank 1 at a set height position. This position corresponds to the maximum safe capacity level of the tank 1. The level switch 4 is electrically connected to the external dosing pump or solenoid valve control system through the signal transmission line 6. Once the liquid surface contacts the probe of the level switch 4, the signal transmission line 6 immediately transmits a stop signal to cut off the dosing source, fundamentally preventing the occurrence of large-scale overflow. The diversion component 5 serves as the second line of defense, specifically handling small amounts of agent caused by equipment response delays or pipeline residual liquid leakage, ensuring absolute safety.

[0038] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, to enhance the stability of the device's base and adapt to installation requirements on different ground surfaces, please refer to... Figure 2 The fixing plate 2 is fixedly installed on the bottom outer edge of the tank body 1. The fixing plate 2 is flat and extends outward. It has multiple standard-sized mounting holes. By passing expansion bolts or anchor bolts through the mounting holes, the entire tank body 1 can be firmly locked to the concrete base or steel structure platform, effectively preventing the tank body 1 from shifting or tipping over due to equipment vibration or external force collision.

[0039] As a preferred embodiment, in order to facilitate the cleaning and maintenance of the bottom of the tank 1 and keep it dry and ventilated, the support legs 10 are designed as multiple independent columnar or block structures, which are evenly distributed in an array on the bottom surface of the tank 1. The height of the support legs 10 is designed so that there is enough operating space between the bottom of the tank 1 and the ground, which is convenient for cleaning up accidentally splashed stains and prevents water accumulation at the bottom from corroding the outer wall of the tank 1.

[0040] As a preferred embodiment, in order to ensure that the drainage component 5 has the best corrosion resistance life, the main body material of the tray 501 is selected as acid and alkali resistant rigid polyvinyl chloride. This material exhibits excellent chemical stability in high concentrations of ferric chloride solution under normal and medium temperature conditions, and is not prone to swelling, cracking or discoloration, thereby ensuring the reliability of the drainage function for a long time.

[0041] As a preferred embodiment, in order to adapt to conventional industrial dosing scenarios and ensure collection efficiency, the outer contour dimensions of the tray 501 are preferably set to 600 mm in length and 400 mm in width. This size specification can not only completely cover the area where the dosing pipe 7 above may drip, but also provide sufficient planar space for the arrangement of the drainage channel 502.

[0042] As a preferred embodiment, in order to prevent the collection pipe 802 from being corroded or blocked, the collection pipe 802 is made of polytetrafluoroethylene, i.e., Teflon tubing. This material has an extremely low coefficient of friction and excellent chemical corrosion resistance, and hardly reacts with any chemical reagents. At the same time, the inner diameter of the collection pipe 802 is specifically set to 25 mm. The larger pipe diameter ensures that even if the agent contains a small amount of crystalline particles or impurities, it can flow smoothly into the collection tank 801 through the pipe, avoiding overflow failure caused by pipe blockage.

[0043] As a preferred embodiment, in order to achieve accurate multi-point monitoring of liquid level, the number of liquid level switches 4 is preferably two or more, and they are symmetrically arranged on both sides of the diversion component 5. This layout can eliminate the risk caused by the failure of a single sensor, and can more accurately judge the liquid level status through multi-point signal comparison, preventing malfunctions caused by liquid level fluctuations.

[0044] The working principle of this novel ferric chloride dosing overflow prevention and collection device is as follows: When the device is in normal working condition, ferric chloride reagent is continuously delivered to the tank 1 through the dosing pipe 7. At this time, the liquid level switch 4 located at the top of the tank 1 is in real-time monitoring state, and its probe continuously senses the changes in liquid level inside the tank 1. If the dosing process is stable and the liquid level does not reach the preset warning height, the reagent will be stored normally in the tank 1, and the device will be in standby monitoring mode.

[0045] In the event of an accident, such as a loose and leaking connection at the dosing pipe 7, or an oversupply of chemicals due to a malfunction in the dosing system that overflows from the dosing port, the overflowing chemicals will first drip or flow onto the liquid-receiving surface in the middle of the tray 501 located below. Since the liquid-receiving surface in the middle of the tray 501 is relatively high, and the drainage channel 502 is located on the inner edge of the side wall of the tray 501 and has a low bottom height, the chemicals accumulated in the middle of the tray 501 will naturally flow to both sides under the action of gravity and eventually flow into the drainage channel 502.

[0046] After entering the diversion channel 502, the agent is guided by the shape of the diversion channel 502 and flows directionally along the channel to the discharge port 503 at the tail of the tray 501. The discharge port 503 serves as the only outlet, guiding the agent into the collection pipe 802 connected to it. The agent then flows quickly through the vertically downward collection pipe 802 and is finally safely discharged into the collection bucket 801 below for temporary storage. The entire process is carried out in a closed or semi-closed path made of corrosion-resistant material, effectively isolating the corrosive agent from the external environment and the main body of the equipment, and avoiding pollution and corrosion to the platform 3, the outer wall of the tank 1, and the ground.

[0047] Meanwhile, if the overflow is caused by an excessively high liquid level inside tank 1, the level switch 4 will detect that the liquid level has reached the set height before or simultaneously with the overflow. Once triggered, the level switch 4 will immediately send a high liquid level alarm signal to the external control system through the signal transmission line 6. After receiving the signal, the control system will quickly cut off the power supply to the dosing pump or close the inlet valve to forcibly stop the dosing operation and block further overflow of the agent from the source. This combination of active control and passive drainage and collection ensures dual safety in the dosing process.

[0048] In addition, when the device needs maintenance after running for a period of time, or when there are residual crystals in the tray 501 that need to be cleaned, the operator only needs to loosen the bolts 902 on the disassembly assembly 9 and disconnect the fixing block 901 from the platform 3, so that the entire drainage assembly 5 can be easily removed for rinsing or replacement. After maintenance is completed, it can be reinstalled in its original position, which greatly facilitates the daily management and maintenance of the equipment.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for preventing overflow and collecting ferric chloride dosing, characterized in that, include: Tank body (1); Platform (3) installed on top of the tank (1); The dosing tube (7) is located above the platform (3); The flow-guiding component (5) is located in the middle of the platform (3); A disassembly assembly (9) is installed on the outside of the drainage assembly (5) for disassembly and assembly. A collection component (8) is installed at the outlet of the drainage component (5) to collect the spilled medicine. And a level switch (4) installed on the top of the tank (1) for detecting the level of the reagent; The diversion assembly (5) includes a tray (501) fixedly connected to the top of the tank (1), a diversion groove (502) is provided in the middle of the tray (501) near the inner wall, and a discharge port (503) connected to the diversion groove (502) is provided at the tail of the tray (501). The collection assembly (8) includes a collection bucket (801) and a collection pipe (802). The two ends of the collection pipe (802) are respectively connected to the discharge port (503) and the collection bucket (801). The disassembly assembly (9) includes a plurality of fixing blocks (901) fixedly connected to the outside of the tray (501). The fixing blocks (901) are fitted with bolts (902) that are threaded to the top of the tank body (1). The liquid level switch (4) is located on both sides of the diversion assembly (5). The liquid level switch (4) is electrically connected to a signal transmission line (6) on the outside. The end of the signal transmission line (6) away from the liquid level switch (4) is connected to the control system.

2. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, A fixing plate (2) is installed at the bottom of the tank (1), and the fixing plate (2) is used to stably fix the tank (1).

3. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, The bottom of the tank (1) is equipped with a plurality of support legs (10), which are used to support the tank (1).

4. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, The tray (501) is made of acid and alkali resistant rigid polyvinyl chloride.

5. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, The tray (501) has dimensions of 600 mm by 400 mm.

6. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, The material of the collection tube (802) is polytetrafluoroethylene.

7. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, The diameter of the collection tube (802) is 25 mm.

8. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, The tray (501) is constructed such that when the medicine overflows from the inlet of the dosing pipe (7), the medicine flows into the middle of the tray (501), flows to both sides of the tray (501) to the drainage groove (502) located at the side wall end of the tray (501), and is guided by the drainage groove (502) into the discharge port (503) at the tail of the tray (501), enters the collection pipe (802) through the discharge port (503), and finally enters the collection bucket (801).

9. The ferric chloride dosing overflow prevention and collection device according to claim 1, characterized in that, The liquid level switch (4) is configured such that when the agent inside the tank (1) reaches the set height, the signal is transmitted to the control system through the signal transmission line (6) so as to shut down the dosing equipment through the control system.

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