A circulating water residual chlorine sampling device

Abstract

The application relates to the technical field of residual chlorine sampling, and discloses a circulating water residual chlorine sampling device, which comprises a hot well, a residual chlorine meter, a meter body water inlet pipe and a meter body water outlet pipe, and is characterized in that the device further comprises a water taking extension pipe, a booster pump, a pump inlet door, a pump outlet door, a water outlet pipe, a buffer water tank, an overflow pipe and an overflow door; one end of the water taking extension pipe extends to the bottom of the hot well, the other end of the water taking extension pipe is fixedly connected with one end of the pump inlet door; the other end of the pump inlet door is fixedly connected with the inlet of the booster pump, the outlet of the booster pump is fixedly connected with one end of the pump outlet door; the other end of the pump outlet door is fixedly connected with one end of the water outlet pipe, the other end of the water outlet pipe extends to the top of the buffer water tank and is in communication with the inside of the buffer water tank; and the bottom of the buffer water tank is provided with a water inlet. The device can obtain a representative water sample, provides stable sampling power, buffers flow speed, realizes water sample backflow, guarantees detection accuracy and ensures device stability.

Description

Technical Field

[0001] This invention relates to the field of residual chlorine sampling technology, specifically to a residual chlorine sampling device for circulating water. Background Technology

[0002] Residual chlorine sampling devices for circulating water are widely used in the field of industrial circulating water treatment. They are mainly used to sample and test the residual chlorine content in the circulating water system, providing a basis for adjusting the sterilization and disinfection process of circulating water, ensuring that the equipment of the circulating water system is not affected by corrosion and scaling, and ensuring stable production operation.

[0003] In existing circulating water residual chlorine sampling processes, insufficient sample representativeness is a common problem. Many related technologies employ sampling points set up in the shallow layer of the hot well. While this method simplifies the structure and reduces costs, it fails to reflect the true residual chlorine situation at different depths of the circulating water, leading to biased test results and affecting the accuracy of process adjustments. Unstable sampling power is also a significant issue. Existing technologies often use natural overflow sampling, which requires no additional power equipment but is easily affected by fluctuations in circulating water pressure, frequently resulting in sampling interruptions and compromising sampling continuity. Furthermore, the impact of water sample flow rate fluctuations on detection accuracy is difficult to resolve. Existing technologies often directly pass the water sample into the residual chlorine meter for detection. While this simplifies the process, the unstable flow rate can easily impact the detection components, leading to significant detection deviations and failing to provide accurate residual chlorine data. Therefore, a circulating water residual chlorine sampling device is proposed. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a residual chlorine sampling device for circulating water to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a circulating water residual chlorine sampling device, comprising: A hot well, a residual chlorine meter, a meter body inlet pipe, and a meter body drain pipe, characterized in that it further includes a water intake extension pipe, a booster pump, a pump inlet valve, a pump outlet valve, a water outlet pipe, a buffer tank, an overflow pipe, and an overflow valve; One end of the water intake extension pipe extends to the bottom of the hot well, and the other end of the water intake extension pipe is fixedly connected to one end of the pump inlet valve; The other end of the pump inlet gate is fixedly connected to the inlet of the booster pump, and the outlet of the booster pump is fixedly connected to one end of the pump outlet gate. The other end of the pump outlet gate is fixedly connected to one end of the outlet pipe, and the other end of the outlet pipe extends to the top of the buffer tank and communicates with the inside of the buffer tank. The buffer tank is provided with a water inlet at the bottom. The water inlet is fixedly connected to one end of the meter body water inlet pipe, and the other end of the meter body water inlet pipe is fixedly connected to the water inlet of the residual chlorine meter. The outlet of the residual chlorine meter is fixedly connected to one end of the meter body drain pipe, and the other end of the meter body drain pipe extends into the hot well. The top of the buffer water tank is provided with an overflow port, which is fixedly connected to one end of the overflow pipe. The other end of the overflow pipe is fixedly connected to the original water intake of the hot well. An overflow valve is fixedly installed on the overflow pipe. It can obtain more representative water samples by extending the water intake pipe deep into the bottom of the hot well, avoiding detection deviations caused by differences in residual chlorine between the upper and lower layers of water; it uses a booster pump to provide stable power, and in conjunction with inlet and outlet valves to achieve flexible control of sampling start and stop, preventing sampling interruption; it uses a buffer tank to buffer the water sample flow rate, avoiding the impact of water flow impact on the detection accuracy of the residual chlorine meter; it uses an overflow pipe and overflow valve to achieve water sample circulation backflow, preventing water sample overflow and waste, while maintaining a stable liquid level in the buffer tank. Overall, it solves the problems of unrepresentative sampling, insufficient power, low detection accuracy, and water sample waste of traditional sampling devices, ensuring the stable and accurate operation of residual chlorine detection.

[0006] Preferably, the water intake extension pipe has several evenly distributed water intake holes on its pipe wall, and the water intake holes are integrally formed with the water intake extension pipe. An anti-clogging end cap is fixedly installed at the end of the water intake extension pipe away from the pump inlet gate.

[0007] Preferably, the booster pump is installed on the ground outside the hot well via a bracket, and the bracket is fixedly connected to the booster pump and the ground. A protective shell is detachably connected to the outside of the booster pump.

[0008] Preferably, the water outlet pipe is made of stainless steel, and a splash guard is fixedly installed at one end of the water outlet pipe that extends into the buffer tank.

[0009] Preferably, the buffer tank is a vertical cylindrical structure, with a support fixedly connected to the bottom of the buffer tank, the support fixedly connected to the ground, and the inner wall of the buffer tank coated with an anti-corrosion coating.

[0010] Preferably, a filter valve is fixedly installed on the pipe between the water inlet at the bottom of the buffer water tank and the water inlet pipe of the meter body, with the filter end of the filter valve facing the buffer water tank.

[0011] Preferably, the connection position of the overflow pipe to the original water intake of the hot well is higher than the water intake end position of the water intake extension pipe inside the hot well.

[0012] Preferably, the water intake extension pipe, water outlet pipe, overflow pipe and their corresponding connecting components are all connected by flanges, and sealing gaskets are provided at the flange connections.

[0013] Preferably, a liquid level observation window is fixedly installed on the side wall of the buffer tank, and the liquid level observation window is set along the height direction of the buffer tank.

[0014] Preferably, a level alarm is installed on the side wall of the buffer tank, and the level alarm is fixed to the buffer tank by bolts, with the detection end of the level alarm penetrating and extending into the interior of the buffer tank.

[0015] Compared with the prior art, the present invention provides a residual chlorine sampling device for circulating water, which has the following beneficial effects: This invention achieves more representative circulating water samples from the bottom of the hot well by extending the water intake pipe to the bottom of the hot well, solving the problem of partial samples caused by improper water intake location in the original device. By adding a booster pump, pump inlet valve, and pump outlet valve, a stable sampling power supply is achieved, which has the advantages of avoiding sampling interruption and ensuring sampling continuity, solving the problem of insufficient natural water intake power. By setting up a buffer water tank, the water sample flow rate is buffered, which has the advantage of avoiding the impact of water flow on detection accuracy. By setting up an overflow pipe and overflow valve, excess water sample in the buffer water tank can be returned, solving the problem of water sample overflow and waste. Overall, this invention ensures the accuracy of residual chlorine detection and the stable operation of the sampling device. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the circulating water residual chlorine sampling device of the present invention.

[0017] In the diagram: 1. Hot well; 2. Residual chlorine meter; 3. Meter body inlet pipe; 4. Meter body drain pipe; 5. Water intake extension pipe; 6. Booster pump; 7. Pump inlet valve; 8. Pump outlet valve; 9. Outlet pipe; 10. Buffer tank; 11. Overflow pipe; 12. Overflow valve; 13. Bracket; 14. Support base; 15. Filter valve; 16. Liquid level observation window; 17. Liquid level alarm. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a residual chlorine sampling device for circulating water. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3The system includes: a hot well 1, a residual chlorine meter 2, a meter body inlet pipe 3, and a meter body drain pipe 4. Its distinguishing feature is that it further includes a water intake extension pipe 5, a booster pump 6, a pump inlet valve 7, a pump outlet valve 8, a water outlet pipe 9, a buffer tank 10, an overflow pipe 11, and an overflow valve 12. One end of the water intake extension pipe 5 extends to the bottom of the hot well 1, and the other end of the water intake extension pipe 5 is fixedly connected to one end of the pump inlet valve 7. The other end of the pump inlet valve 7 is fixedly connected to the inlet of the booster pump 6, and the outlet of the booster pump 6 is fixedly connected to one end of the pump outlet valve 8. The other end of the pump outlet valve 8 is fixedly connected to one end of the water outlet pipe 9. The other end extends to the top of the buffer water tank 10 and communicates with the inside of the buffer water tank 10; the bottom of the buffer water tank 10 is provided with a water inlet, which is fixedly connected to one end of the meter body water inlet pipe 3, and the other end of the meter body water inlet pipe 3 is fixedly connected to the water inlet of the residual chlorine meter 2; the outlet of the residual chlorine meter 2 is fixedly connected to one end of the meter body drain pipe 4, and the other end of the meter body drain pipe 4 extends into the inside of the hot well 1; the top of the buffer water tank 10 is provided with an overflow port, which is fixedly connected to one end of the overflow pipe 11, and the other end of the overflow pipe 11 is fixedly connected to the original water intake of the hot well 1; an overflow gate 12 is fixedly installed on the overflow pipe 11; By adding a water intake extension pipe 5, a booster pump 6, a pump inlet valve 7, a pump outlet valve 8, a water outlet pipe 9, a buffer tank 10, an overflow pipe 11, and an overflow valve 12, the problems of unstable sampling and unrepresentative water intake found in the original device consisting only of hot well 1, residual chlorine meter 2, meter body inlet pipe 3, and meter body drain pipe 4 were solved. The water intake extension pipe 5 extends to the bottom of hot well 1, allowing for a more uniform circulating water sample from the bottom of hot well 1, avoiding detection issues caused by differences in residual chlorine content between the upper and lower layers of water. Deviation; the booster pump 6, together with the pump inlet valve 7 and the pump outlet valve 8, can stably provide sampling power, prevent sampling interruption, and ensure that the residual chlorine meter 2 can continuously and normally detect; the buffer tank 10 can buffer the water sample flow rate and avoid the impact of water flow on the detection accuracy of the residual chlorine meter 2; the overflow pipe 11 and the overflow valve 12 can return the excess water sample in the buffer tank 10 to the original water intake of the hot well 1, realize the recycling of water sample, and at the same time maintain the stability of the liquid level in the buffer tank 10, ensuring the continuity and stability of sampling.

[0020] Please see Figure 1 and Figure 2 The water intake extension pipe 5 has several evenly distributed water intake holes on its pipe wall, and the water intake holes are integrally formed with the water intake extension pipe 5. An anti-clogging end cap is fixedly installed at the end of the water intake extension pipe 5 away from the pump inlet gate 7. The water intake extension pipe 5 has several evenly distributed water intake holes on its wall, which are integrally formed. At the same time, an anti-clogging end cap is installed at the end away from the pump inlet gate 7. The core benefits are improved sampling uniformity and anti-clogging ability. The evenly distributed water intake holes allow circulating water from different positions at the bottom of the hot well 1 to enter the water intake extension pipe 5 simultaneously, avoiding the partiality of the sample caused by single-point water intake and ensuring more accurate residual chlorine detection results. The integrally formed structure eliminates water and air leakage problems caused by loose connection between the water intake holes and the pipe wall, improving the sealing performance and service life of the water intake extension pipe 5. The anti-clogging end cap can effectively prevent impurities and sediments at the bottom of the hot well 1 from entering the water intake extension pipe 5, preventing pipe blockage, avoiding sampling interruption due to blockage, reducing equipment maintenance frequency, and ensuring long-term stable operation of the sampling device.

[0021] Please see Figure 1 and Figure 2 The booster pump 6 is installed on the ground outside the hot well 1 via the bracket 13, and the bracket 13 is fixedly connected to the booster pump 6 and the ground. The booster pump 6 is detachably connected to a protective shell. The booster pump 6 is installed on the ground outside the hot well 1 via a bracket 13, and the bracket 13 is fixedly connected to the booster pump 6 and the ground. The booster pump 6 has a detachable protective shell, which mainly improves the stability and safety of the equipment installation and facilitates maintenance. The fixed connection of the bracket 13 can effectively fix the booster pump 6, preventing the vibration generated during its operation from causing the pipe connection to loosen or leak, and ensuring stable sampling power. Installing the booster pump 6 outside the hot well 1, away from water, can prevent water vapor and corrosive substances in the hot well 1 from corroding the booster pump 6 and extend the service life of the equipment. The detachable protective shell can effectively block dust and debris, protecting the internal components of the booster pump 6 from damage. At the same time, it is easy to disassemble, which makes it convenient for staff to inspect and maintain the booster pump 6 and reduce maintenance costs.

[0022] Please see Figure 1 and Figure 2 The water outlet pipe 9 is made of stainless steel, and a splash guard is fixedly installed at one end of the water outlet pipe 9 that extends into the buffer water tank 10. The outlet pipe 9 is made of stainless steel, and a splash guard is installed at one end extending into the buffer tank 10. This improves the durability of the pipe and prevents water sample splashing from affecting the test. Stainless steel has excellent corrosion resistance, high temperature resistance, and rust resistance, which can adapt to the water quality environment of circulating water, prevent the outlet pipe 9 from being corroded and damaged by long-term use, extend its service life, and prevent the pipe from rusting and contaminating the water sample, thus ensuring the accuracy of the test. The splash guard can effectively prevent the water sample discharged from the outlet pipe 9 from splashing directly onto the inner wall of the buffer tank 10, prevent liquid level fluctuations caused by water sample splashing, avoid uneven mixing of water samples in the buffer tank 10, reduce waste caused by water sample splashing, maintain a clean environment inside the buffer tank 10, and reduce the workload of equipment cleaning and maintenance.

[0023] Please see Figure 1 and Figure 2 The buffer tank 10 is a vertical cylindrical structure. The bottom of the buffer tank 10 is fixedly connected to a support 14, which is fixedly connected to the ground. The inner wall of the buffer tank 10 is coated with an anti-corrosion coating. The buffer tank 10 has a vertical cylindrical structure, with a fixed support 14 at the bottom and fixed to the ground. The inner wall is coated with an anti-corrosion coating, which improves the stability and corrosion resistance of the tank and ensures the purity of the water sample. The vertical cylindrical structure distributes the force evenly, occupies a small area, and is easy to install and arrange. It also promotes uniform sedimentation of the water sample and avoids the accumulation of impurities. The support 14 can firmly fix the buffer tank 10 to prevent it from tipping over and ensure the safe operation of the equipment. The anti-corrosion coating on the inner wall can effectively isolate the circulating water from contact with the inner wall of the buffer tank 10, prevent the inner wall of the tank from being corroded, and prevent the coating from falling off and contaminating the water sample, ensuring that the water sample is not subject to secondary pollution. At the same time, it extends the service life of the buffer tank 10 and reduces the equipment replacement cost.

[0024] Please see Figure 1 and Figure 2 A filter valve 15 is fixedly installed on the pipe between the water inlet at the bottom of the buffer water tank 10 and the water inlet pipe 3 of the meter body, with the filter end of the filter valve 15 facing the buffer water tank 10. A filter valve 15 is installed on the pipe between the bottom inlet of the buffer tank 10 and the inlet pipe 3 of the meter body, with the filter end facing the buffer tank 10. The core benefit is to filter impurities, protect the residual chlorine meter 2, and improve detection accuracy. After the circulating water enters the buffer tank 10, it may still contain a small amount of fine impurities. The filter valve 15 can perform secondary filtration on the water sample, intercepting impurities and sediments, preventing them from entering the inlet pipe 3 of the meter body and the residual chlorine meter 2, avoiding blockage and wear of the internal components of the residual chlorine meter 2, protecting the residual chlorine meter 2 from damage, and extending its service life. At the same time, the filtered water sample is purer, which can avoid the interference of impurities on the residual chlorine detection results, ensuring that the detection data of the residual chlorine meter 2 is accurate and reliable, and providing a precise basis for the control of residual chlorine in circulating water.

[0025] Please see Figure 1 and Figure 2 The connection position of the overflow pipe 11 to the original water intake of the hot well 1 is higher than the water intake end position of the water intake extension pipe 5 in the hot well 1; The connection position of the overflow pipe 11 to the original water intake of the hot well 1 is higher than the water intake end of the water intake extension pipe 5 inside the hot well 1. This has the advantages of ensuring smooth water sample circulation, avoiding secondary pollution, and maintaining stable sampling. This height setting can create a natural pressure difference, ensuring that excess water sample in the buffer tank 10 can flow back to the hot well 1 smoothly through the overflow pipe 11, avoiding water sample overflow from the buffer tank 10 due to poor overflow, which would cause waste and environmental pollution. At the same time, the return position is higher than the water intake end, which can prevent the returned water sample from directly mixing and interfering with the water sample to be sampled at the bottom of the hot well 1, ensuring that the water intake extension pipe 5 always obtains fresh water sample from the bottom of the hot well 1 that has not been disturbed, ensuring the representativeness of the sampling and the accuracy of the test results, and maintaining the stable operation of the entire sampling system.

[0026] Please see Figure 1 and Figure 2 The water intake extension pipe 5, water outlet pipe 9, overflow pipe 11 and their corresponding connecting parts are all connected by flanges, and sealing gaskets are provided at the flange connections. The water intake extension pipe 5, water outlet pipe 9, overflow pipe 11, and their corresponding connecting components are all connected by flanges, and sealing gaskets are provided at the flange connections. The advantages of this method are improved connection sealing and ease of disassembly and maintenance. The flange connection is firm and easy to disassemble and assemble, making it convenient for staff to inspect and replace each pipe, reducing maintenance difficulty and workload. The sealing gaskets can effectively fill the gaps at the flange connections, preventing water sample leakage and avoiding sampling interruptions and water waste caused by leakage. At the same time, it prevents air from entering the pipe and affecting the properties of the water sample, ensuring the integrity of the water sample and the accuracy of the test. In addition, the sealing and firmness of the flange connection can improve the stability of the entire sampling device and reduce the failure rate during equipment operation.

[0027] Please see Figure 1 and Figure 2 A liquid level observation window 16 is fixedly installed on the side wall of the buffer tank 10, and the liquid level observation window 16 is set along the height direction of the buffer tank 10. A liquid level observation window 16 is installed on the side wall of the buffer tank 10, and is set along the height direction of the buffer tank 10. The advantage is that it is convenient to observe the liquid level in real time, detect abnormalities in time, and ensure the stable operation of the equipment. The liquid level observation window 16 allows the staff to see the liquid level of the water sample in the buffer tank 10 intuitively and clearly, and can grasp the liquid level without disassembling the equipment, which is convenient to operate. The setting along the height direction can fully display the range of liquid level changes, which makes it easy for the staff to judge whether the water sample liquid level is within the normal range, detect abnormalities such as excessively high or low liquid levels in time, avoid water sample overflow due to excessively high liquid levels, and prevent the residual chlorine meter 2 from stopping due to excessively low liquid levels, ensure the continuous and stable operation of sampling, and reduce the risk of equipment failure.

[0028] Please see Figure 1 and Figure 2A liquid level alarm 17 is installed on the side wall of the buffer water tank 10, and the liquid level alarm 17 is fixed to the buffer water tank 10 by bolts. The detection end of the liquid level alarm 17 penetrates and extends into the interior of the buffer water tank 10. A level alarm 17 is installed on the side wall of the buffer tank 10 and is fixed with bolts. The detection end extends into the tank. This has the advantages of enabling abnormal level alarms, improving equipment safety and intelligence. The level alarm 17 can detect the water sample level in the buffer tank 10 in real time. When the level exceeds the preset normal range (too high or too low), it can issue an alarm signal in time to remind staff to deal with it in time and avoid sampling interruption, equipment damage or water sample waste due to abnormal level. The bolt fixing method facilitates the disassembly, maintenance and calibration of the level alarm 17 to ensure its detection accuracy. The detection end extending into the inside can directly contact the water sample, making the detection more accurate and further ensuring the stable and reliable operation of the sampling device.

[0029] This solution includes a newly added residual chlorine sampling device consisting of a water intake extension pipe, a booster pump, a pump inlet valve, a pump outlet valve, a buffer tank, an overflow pipe, and an overflow valve. During operation, the booster pump 6, pump inlet valve 7, pump outlet valve 8, and overflow valve 12 are turned on. Circulating water from the bottom of the hot well 1 enters the pipeline through the water intake hole of the water intake extension pipe 5. After being pressurized by the booster pump 6, it is transported to the buffer tank 10 through the outlet pipe 9. The water sample in the buffer tank 10 is filtered by the filter valve 15 and then enters the residual chlorine meter 2 through the meter body inlet pipe 3 for residual chlorine detection. The detected water sample is then returned to the hot well 1 through the meter body drain pipe 4. Excess water in the buffer tank 10 is discharged through the drain pipe 4. The overflow pipe 11 returns the water to the original intake of the hot well 1. The liquid level observation window 16 displays the liquid level in real time, and the liquid level alarm 17 monitors for abnormal liquid levels and alarms. Instructions for use: Before use, check that all valves, pipes and equipment connections are intact; open the relevant valves and booster pump 6, observe the liquid level observation window 16, and ensure that the liquid level is normal; regularly check whether the filter valve 15 is blocked, the operating status of the booster pump 6 and the sealing of all connections; when the liquid level alarm 17 alarms, promptly investigate and deal with the cause of the abnormal liquid level; during maintenance, close the relevant valves and booster pump 6, and disassemble the protective shell, flange connection parts and liquid level alarm 17 for maintenance.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A residual chlorine sampling device for circulating water, characterized in that, include: The hot well (1), residual chlorine meter (2), meter body inlet pipe (3), meter body drain pipe (4) are characterized in that they also include a water intake extension pipe (5), a booster pump (6), a pump inlet valve (7), a pump outlet valve (8), a water outlet pipe (9), a buffer water tank (10), an overflow pipe (11), and an overflow valve (12). One end of the water intake extension pipe (5) extends to the bottom of the hot well (1), and the other end of the water intake extension pipe (5) is fixedly connected to one end of the pump inlet gate (7); The other end of the pump inlet gate (7) is fixedly connected to the inlet of the booster pump (6), and the outlet of the booster pump (6) is fixedly connected to one end of the pump outlet gate (8); The other end of the pump outlet gate (8) is fixedly connected to one end of the outlet pipe (9), and the other end of the outlet pipe (9) extends to the top of the buffer tank (10) and communicates with the inside of the buffer tank (10); The buffer water tank (10) is provided with a water inlet at the bottom. The water inlet is fixedly connected to one end of the meter body water inlet pipe (3), and the other end of the meter body water inlet pipe (3) is fixedly connected to the water inlet of the residual chlorine meter (2). The outlet end of the residual chlorine meter (2) is fixedly connected to one end of the meter body drain pipe (4), and the other end of the meter body drain pipe (4) extends into the hot well (1); The buffer water tank (10) is provided with an overflow port at the top. The overflow port is fixedly connected to one end of the overflow pipe (11). The other end of the overflow pipe (11) is fixedly connected to the original water intake of the hot well (1). An overflow gate (12) is fixedly installed on the overflow pipe (11).

2. The circulating water residual chlorine sampling device according to claim 1, characterized in that: The water intake extension pipe (5) has several evenly distributed water intake holes on its pipe wall, and the water intake holes are integrally formed with the water intake extension pipe (5).

3. The circulating water residual chlorine sampling device according to claim 1, characterized in that: The booster pump (6) is installed on the ground outside the hot well (1) via a bracket (13), and the bracket (13) is fixedly connected to the booster pump (6) and the ground.

4. The circulating water residual chlorine sampling device according to claim 1, characterized in that: The water outlet pipe (9) is made of stainless steel, and a splash guard is fixedly installed at one end of the water outlet pipe (9) extending into the buffer water tank (10).

5. The circulating water residual chlorine sampling device according to claim 1, characterized in that: The buffer water tank (10) is a vertical cylindrical structure. A support (14) is fixedly connected to the bottom of the buffer water tank (10), and the support (14) is fixedly connected to the ground.

6. The circulating water residual chlorine sampling device according to claim 1, characterized in that: A filter valve (15) is fixedly installed on the pipe between the water inlet at the bottom of the buffer water tank (10) and the water inlet pipe (3) of the meter body, with the filter end of the filter valve (15) facing the buffer water tank (10).

7. The circulating water residual chlorine sampling device according to claim 1, characterized in that: The connection position of the overflow pipe (11) to the original water intake of the hot well (1) is higher than the water intake end position of the water intake extension pipe (5) inside the hot well (1).

8. The circulating water residual chlorine sampling device according to claim 1, characterized in that: The water intake extension pipe (5), water outlet pipe (9), overflow pipe (11) and their corresponding connecting parts are all connected by flanges, and sealing gaskets are provided at the flange connections.

9. A circulating water residual chlorine sampling device according to claim 1, characterized in that: A liquid level observation window (16) is fixedly installed on the side wall of the buffer water tank (10), and the liquid level observation window (16) is set along the height direction of the buffer water tank (10).

10. A circulating water residual chlorine sampling device according to claim 1, characterized in that: A level alarm (17) is installed on the side wall of the buffer water tank (10), and the level alarm (17) is fixed to the buffer water tank (10) by bolts. The detection end of the level alarm (17) penetrates and extends into the interior of the buffer water tank (10).

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