Automatic water quality monitoring and pollution discharge device for environment-friendly open type cooling water system

Abstract

The utility model discloses an automatic water quality monitoring and pollution discharge device for an environment-friendly open type cooling water system, and particularly relates to the technical field of water-cooled air conditioning refrigeration equipment, the automatic water quality monitoring and pollution discharge device comprises a machine body, a flocculant liquid storage tank, a disinfectant liquid storage tank and a front water quality monitoring tank, and the disinfectant liquid storage tank is arranged in an inner cavity at the upper end of the machine body; the conductivity is effectively monitored through the front water quality monitoring tank, so that the content of dissolved ions which cause scaling and corrosion of pipeline equipment is monitored, the cooling water system is automatically controlled to change water and dilute by monitoring the conductivity of cooling water, the water quality is ensured to be within a set threshold value all the time, and the service life of the cooling water system is prolonged. The scaling speed of cooling water heat exchange equipment and the corrosion to metal materials are greatly reduced, the heat exchange efficiency of a cooling water system is remarkably improved, the turbidity and the dissolved oxygen concentration of water are monitored in real time, the added flocculant and disinfectant are automatically adjusted according to actual requirements, the sewage discharge flow can be accurately controlled through an electric valve, and the water quality is improved. Therefore, the water quality discharge requirements of different industries or regions are met.

Description

Technical Field

[0001] This utility model relates to the technical field of water-cooled air conditioning refrigeration equipment, and more specifically, to an automatic water quality monitoring and sewage discharge device for an open cooling water system of water-cooled air conditioning refrigeration equipment. Background Technology

[0002] Water-cooled air conditioning units are a common type of refrigeration equipment. During operation, these units dissipate heat to the outdoor air via a cooling water system, typically an open-loop system. In this system, the water is connected to the outdoor air through a cooling tower, and continuous evaporation releases the heat generated by the air conditioning unit into the atmosphere. Because the cooling water is exposed to the atmosphere and constantly evaporates, its quality deteriorates over time. This deterioration reduces the heat exchange efficiency of the air conditioning unit and cooling tower, and may also accelerate corrosion and blockage of the system's pipes. Therefore, regular drainage and water replacement are necessary to maintain the cooling water quality at a suitable level.

[0003] A search revealed an existing patent (publication number: CN208936492U) that discloses a sewage discharge device for cooling water in a subway station. The device includes a sewage discharge tank. An inlet is located in the middle of the top outer wall of the sewage discharge tank, and an inlet pipe is installed on the inner wall of the inlet. A filter screen is installed near the top of the inner wall of the sewage discharge tank. Fixed cylinders are installed near the middle of the inner walls on both sides of the sewage discharge tank, and water guides are evenly spaced and arranged in a ring on the outer wall of the fixed cylinders. A semi-permeable membrane is installed on the bottom outer wall of the fixed cylinders. A countersunk hole is located near the middle of one inner wall of the sewage discharge tank, and a bearing is installed on the inner wall of the countersunk hole. A rotating rod is rotatably connected to the inner wall of the bearing. This invention can prevent cooling water containing impurities from being discharged into the environment and causing pollution. It can quickly discharge impurities, prevent water from being discharged with impurities, and monitor the quality of the treated water to prevent impurities in the cooling water from being discharged into the environment and causing pollution. The inventors discovered the following problems with the existing technology during the development of this invention:

[0004] The existing sewage discharge system lacks cooling water quality monitoring, and the sewage discharge nodes and discharge volumes cannot be automatically determined. Furthermore, during the cooling water circulation process, the water flow carries sediment, dirt, or corrosion products from the heat exchange equipment of the air conditioning cooling water into the water. These substances may aggregate into lumpy debris, and the retention of large lumpy debris can easily lead to equipment malfunctions or blockages, thus affecting safe operation. In the entire sewage treatment system, microorganisms reduce pollutants in the water by decomposing and metabolizing organic matter, which requires sufficient dissolved oxygen. If the dissolved oxygen concentration is too low, microbial metabolism will be inhibited, resulting in a decrease in sewage treatment efficiency and a deterioration in treatment effectiveness. Moreover, since the sewage discharge opening adjustment usually only has a few fixed opening levels, and different regions and projects have different sewage discharge standards, when fine-tuning the discharge volume is required, the lack of sufficiently precise opening options makes it impossible to accurately discharge the required amount of water, affecting the sewage discharge effect.

[0005] Therefore, an environmentally friendly automatic water quality monitoring and sewage discharge device for open cooling water systems is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic monitoring and sewage discharge device for air conditioning cooling water quality, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device, comprising a body, a flocculant storage tank, a disinfectant storage tank, and a pre-filter water quality monitoring tank. A mixing chamber is provided at the upper end of the body, with an opening at the upper end of the mixing chamber. A filtration mechanism is provided within the cavity of the opening, and limit blocks are provided on both sides of the upper surface of the filtration mechanism. The flocculant storage tank is installed on the left side of the upper end of the body, and the disinfectant storage tank is installed on the right side of the upper end of the body. Liquid delivery devices are installed at the lower ends of both the flocculant and disinfectant storage tanks. The pre-water quality monitoring tank is located on the left side of the machine body. A cooling water inlet is located on the lower left side of the pre-water quality monitoring tank. A conductivity sensor is located at the lower right end of the pre-water quality monitoring tank. An outlet pipe is installed on the upper right side of the pre-water quality monitoring tank. An electric three-way valve is installed on the outlet pipe. One port of the electric three-way valve is connected to the cooling water outlet, and the other port of the electric three-way valve is connected to the cooling water drain pipe. The cooling water drain pipe is led to the top of the opening. A removable flange blind plate is provided at the bottom of the pre-water quality monitoring tank. A control box is located on one side of the machine body.

[0008] A turbidity sensor is installed on one side of the mixing chamber, and a dissolved oxygen sensor is installed on the other side. A discharge pipe is located at the center of the lower end of the mixing chamber. Electric valves are installed on the bodies of both sets of liquid delivery pipes and the discharge pipe. A motor is installed at the lower end of the mixing chamber, and a drive shaft is installed at the output end of the motor. A stirring disc is installed on the outer surface of the drive shaft. A drain pipe is located at the lower end of one side of the machine body, and a drain electric valve is installed at the center of the drain pipe.

[0009] Preferably, the ends of the two sets of liquid delivery pipes away from the flocculant storage tank and the disinfectant storage tank are respectively connected to the two sides of the mixing chamber, and the lower end of the mixing chamber is funnel-shaped.

[0010] Preferably, four sets of limiting blocks are provided, and the four sets of limiting blocks respectively abut against the upper edge of the opening.

[0011] Preferably, the flocculant storage tank and the disinfectant storage tank are symmetrically arranged, and the two sets of delivery pipes are symmetrically arranged.

[0012] Preferably, the pre-water quality monitoring tank adopts a closed tank structure. The cooling water inlet and conductivity sensor are both located at the lower part of the pre-water quality monitoring tank and are arranged symmetrically. The water outlet is located at the upper end of the pre-water quality monitoring tank, and an electric three-way valve is installed at the water outlet. The two outlets of the electric three-way valve are respectively connected to the cooling water drain pipe and the cooling water outlet. The end of the cooling water drain pipe away from the electric three-way valve is located above the opening.

[0013] Preferably, the motor is used to drive the transmission shaft to rotate around its axis, and support legs are provided at the four corners of the lower end of the machine body.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. Compared with existing technologies, this environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device effectively monitors conductivity through a pre-positioned water quality monitoring tank, thereby monitoring the content of dissolved ions that cause scaling and corrosion in pipeline equipment. By monitoring the conductivity of the cooling water, the system automatically controls the cooling water system to exchange and dilute the water, ensuring that the water quality is always within the set threshold. This greatly slows down the scaling rate of cooling water heat exchange equipment and reduces the corrosiveness to metal materials, significantly improving the heat exchange efficiency of the cooling water system.

[0016] 2. Compared with existing technologies, this environmentally friendly open cooling water system automatic water quality monitoring and sewage discharge device can quickly assess water quality by monitoring the turbidity and dissolved oxygen concentration of the water in real time. It can automatically adjust the added flocculant and disinfectant according to actual needs to ensure the maximum efficiency of sewage treatment. As a result, the treated water can be safely discharged, maximizing the effect of sewage discharge. Moreover, the sewage discharge flow can be precisely controlled by electric valves to meet the water quality discharge requirements of different industries or regions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the orthographic structure of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the filtration mechanism of this utility model.

[0019] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the diagram.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the disinfectant storage tank of this utility model.

[0021] The attached diagram is labeled as follows: 1. Body; 2. Mixing chamber; 201. Opening; 3. Filtration mechanism; 4. Limiting block; 5. Flocculant storage tank; 6. Disinfectant storage tank; 7. Delivery pipe; 71. Electric valve; 8. Turbidity sensor; 9. Dissolved oxygen sensor; 10. Feed pipe; 11. Support leg; 12. Motor; 13. Drive shaft; 14. Mixing disc; 15. Drain pipe; 16. Drain electric valve; 17. Pre-filter water quality monitoring tank; 171. Cooling water inlet; 172. Cooling water outlet; 18. Outlet pipe connection; 19. Conductivity sensor; 20. Electric three-way valve; 21. Cooling water drain pipe; 22. Removable flange blind plate; 23. Control box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0023] As attached Figures 1 to 4The environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device shown includes a main body 1, a flocculant storage tank 5, a disinfectant storage tank 6, and a pre-filter water quality monitoring tank 17. A mixing chamber 2 is located at the upper end of the main body 1, with an opening 201 at its upper end. A filter mechanism 3 is installed inside the opening 201, and limit blocks 4 are installed on both sides of the upper surface of the filter mechanism 3. The flocculant storage tank 5 is installed on the left side of the upper end of the main body 1, and the disinfectant storage tank 6 is installed on the right side of the upper end of the main body 1. Both the flocculant storage tank 5 and the disinfectant storage tank 6 have delivery pipes 7 installed at their lower ends. The pre-filter water quality monitoring tank 17 is located within the main body 1. On the left side, a cooling water inlet 171 is set on the lower left side of the pre-water quality monitoring tank 17. A conductivity sensor 19 is set on the lower right side of the pre-water quality monitoring tank 17. A water outlet port 18 is installed on the upper right side of the pre-water quality monitoring tank 17. An electric three-way valve 20 is installed on the water outlet port 18. One interface of the electric three-way valve 20 is connected to the cooling water outlet 172, and the other interface of the electric three-way valve 20 is connected to the cooling water drain pipe 21. The cooling water drain pipe 21 is led to the top of the opening 201. A detachable flange blind plate 22 is set at the bottom of the pre-water quality monitoring tank 17. A control box 23 is set on one side of the body 1.

[0024] A turbidity sensor 8 is installed on one side of the inner cavity of the mixing chamber 2, and a dissolved oxygen sensor 9 is installed on the other side of the inner cavity of the mixing chamber 2. A feed pipe 10 is opened at the center of the lower end of the mixing chamber 2. Electric valves 71 are installed on the pipe bodies of both sets of liquid delivery pipes 7 and feed pipe 10. A motor 12 is installed at the lower end of the mixing chamber 2. A drive shaft 13 is installed at the output end of the motor 12. A stirring plate 14 is installed on the outer surface of the drive shaft 13. A drain pipe 15 is opened at the lower end of one side of the machine body 1. A drain electric valve 16 is installed at the center of the drain pipe 15.

[0025] The cooling water inlet 171 is connected to the upstream of the cooling tower inlet main of the cooling water system, and the cooling water outlet 172 is connected to the downstream of the cooling tower inlet main of the cooling water system. The cooling water bypass flows into the pre-filter water quality monitoring tank 17 through the cooling water inlet 171. The conductivity sensor 19 monitors the total concentration of all dissolved ions in the cooling water in real time, including calcium, magnesium, sodium, and chlorine. Through accurate water quality monitoring, this data can be quickly fed back to the control box 23. After receiving the data, the control box 23 controls the electric three-way valve 20 to discharge the cooling water through the cooling water outlet 172. Since the air conditioning cooling water system normally has an automatic water replenishment function, it will automatically replenish water while draining. Water with high dissolved ion concentration in the cooling water system is partially discharged and automatically replenished with tap water or clean water, thereby achieving the effect of water exchange and dilution. Through reasonable water exchange and dilution, the concentration of dissolved ions such as calcium, magnesium, sodium and chloride in the water can be reduced, avoiding excessive water hardness, reducing its corrosiveness to metal materials and slowing down the formation of scale, which helps protect pipes and equipment, greatly slows down the scaling rate of heat exchange equipment, improves the heat exchange efficiency of the equipment, and extends the service life of the heat exchange equipment.

[0026] When wastewater enters the mixing chamber 2 through opening 201, it is filtered by the filtration mechanism 3 to remove impurities and large debris. The filtered wastewater then enters the mixing chamber 2. The turbidity sensor 8 monitors the turbidity of the wastewater in the mixing chamber 2 in real time. The dissolved oxygen sensor 9 monitors changes in dissolved oxygen to facilitate the addition of disinfectant. The flocculant storage tank 5 and the disinfectant storage tank 6 are connected by a delivery pipe 7 to inject the corresponding agents into the mixing chamber 2. The electric valve 71 controls the accuracy of the delivery, allowing the agents to be added through the control system to ensure the best treatment effect. Subsequently, the treated wastewater is discharged into the machine body 1 through the discharge pipe 10. The motor 12 drives the transmission shaft 13 to rotate, thereby driving the stirring plate 14 to stir in the inner cavity of the machine body 1. This promotes the thorough mixing of flocculant, disinfectant, and wastewater, ensuring the uniformity of the entire water body and avoiding uneven sedimentation of flocculants in local areas. Example

[0027] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:

[0028] In a preferred embodiment, the ends of the two sets of liquid delivery pipes 7 away from the flocculant storage tank 5 and the disinfectant storage tank 6 are respectively connected to the two sides of the mixing chamber 2, and the lower end of the mixing chamber 2 is funnel-shaped. Furthermore, the liquid delivery pipes 7 are responsible for introducing liquid into the interior of the mixing chamber 2. The funnel-shaped design at the lower end of the mixing chamber 2 can effectively guide the treated wastewater to flow downward quickly, reducing the residence time of the liquid in the mixing chamber 2.

[0029] In a preferred embodiment, four sets of limiting blocks 4 are provided, and the four sets of limiting blocks 4 respectively abut against the upper edge of the opening 201; furthermore, the four sets of limiting blocks 4 are all connected to the filter mechanism 3, thereby fixing it to the upper edge of the opening 201.

[0030] In a preferred embodiment, the flocculant storage tank 5 and the disinfectant storage tank 6 are symmetrically arranged, and the two sets of delivery pipes 7 are symmetrically arranged. Furthermore, the symmetrical arrangement can ensure the uniformity of the agent dosing in the mixing chamber 2. The simultaneous dosing of two different agents through the symmetrical delivery pipes 7 can improve the overall mixing efficiency, avoid uneven distribution of agents in the water, and thus improve the treatment effect.

[0031] In a preferred embodiment, the pre-filter water quality monitoring tank 17 adopts a closed tank structure. The cooling water inlet 171 and the conductivity sensor 19 are both located at the lower part of the pre-filter water quality monitoring tank 17 and are symmetrically arranged. The outlet pipe 18 is located at the upper end of the pre-filter water quality monitoring tank 17, and an electric three-way valve 20 is installed at the outlet pipe 18. The two outlets of the electric three-way valve 20 are connected to the cooling water drain pipe 21 and the cooling water outlet 172, respectively. The end of the cooling water drain pipe 21 furthest from the electric three-way valve 20 is located above the opening 201. Furthermore, the pre-filter water quality monitoring tank 17 adopts a closed tank structure, which allows the cooling water system's own pressure during operation to be used as power to realize cooling water inlet, cooling water outlet, and cooling water... The system features drainage circulation or discharge, a simple structure that eliminates the need for a driving water pump, and a removable flange blind plate 22 at the bottom for easy periodic cleaning of the dirt deposited inside the pre-filter water quality monitoring tank 17. The symmetrical arrangement of the cooling water inlets 171 ensures full contact between the cooling water and the conductivity sensor 19, and also allows the inlet water flow rate to flush and clean the surface of the conductivity sensor 19, reducing and delaying scale buildup on the surface of the conductivity sensor 19. The water outlet 18 is located on the upper right side of the pre-filter water quality monitoring tank 17, diagonally opposite to the cooling water inlet 171, ensuring that the cooling water in the pre-filter water quality monitoring tank 17 is always full during operation, ensuring that the probe of the conductivity sensor 19 is always in the cooling water, and guaranteeing the accuracy of the measurement data.

[0032] The electric three-way valve 20 is controlled based on the conductivity data monitored by the conductivity sensor 19. When the conductivity reaches the threshold, the electric three-way valve 20 is opened to the cooling water drain pipe 21 for drainage. When the conductivity is lower than the threshold, the electric three-way valve 20 is opened to the cooling water outlet 172, and the cooling water flows back to the cooling water system. The electric three-way valve 20 can guide the cooling water in the pre-water quality monitoring tank 17, which is identified as sewage by the conductivity sensor 19, to the cooling water drain pipe 21 and deliver it to the top of the opening 201, and use the pressure of the cooling water system itself to achieve drainage.

[0033] As a preferred embodiment, support legs 11 are provided at the four corners of the lower end of the body 1; furthermore, the symmetrical layout of the four corner support legs 11 enables the body 1 to bear the load evenly, thereby increasing the load-bearing capacity of the equipment by dispersing the pressure.

[0034] The working process of this utility model is as follows: First, before the sewage enters the sewage discharge device, it enters the pre-water quality monitoring tank 17 through the cooling water inlet 171. The pre-water quality monitoring tank 17 adopts a closed tank structure, which can use the pressure of the cooling water system during operation as a power source to realize the circulation or discharge of cooling water, cooling water inlet, cooling water outlet, and cooling water drainage. The structure is simple and eliminates the need for a driving water pump. Subsequently, the water quality is monitored by the conductivity sensor 19, and these data can be quickly fed back to the control box 23. After receiving the data, the control box 23 controls the electric three-way valve 20 according to the data of the conductivity sensor 19. When the monitored conductivity reaches the threshold, the electric three-way valve 20 is opened to the cooling water drain pipe 21 to discharge the water with high dissolved ion concentration in the cooling water system. When the monitored conductivity is lower than the threshold, the electric three-way valve 20 closes. The cooling water is directed to the cooling water outlet 172, and then flows back to the cooling water system. Because the air conditioning cooling water system has an automatic water replenishment function, it automatically replenishes tap water or clean water while draining, achieving water exchange and dilution, reducing the concentration of dissolved ions in the water, and protecting pipelines and equipment. The electric three-way valve 20 controls the drainage through the cooling water outlet 172. Since the air conditioning cooling water system normally has an automatic water replenishment function, it automatically replenishes water while draining. Water with high dissolved ion concentrations in the cooling water system is partially discharged, and tap water or clean water is automatically replenished, thus achieving the effect of water exchange and dilution. This reduces the water's conductivity, thereby lowering the concentration of dissolved ions such as calcium, magnesium, sodium, and chloride in the water, allowing sediment to settle. Fewer minerals precipitate solids, and by reducing the concentration of chloride ions, the corrosion of the cooling water heat exchange equipment and the formation of scale are slowed down. Then, the high conductivity cooling water in the pre-filter water quality monitoring tank 17 is directed to the cooling water drain pipe 21 through the electric three-way valve 20 and sent to the upper opening 201 and into the mixing chamber 2. The user can regularly clean the dirt deposited inside the pre-filter water quality monitoring tank 17 by removing the removable flange blind plate 22. The water outlet pipe port 18 is set diagonally with the cooling water inlet 171, so that the cooling water in the pre-filter water quality monitoring tank 17 is always full during operation, ensuring that the probe of the conductivity sensor 19 is always in the cooling water and ensuring the accuracy of the measurement data.

[0035] All four sets of limiting blocks 4 are connected to the filter mechanism 3, thus fixing it to the upper edge of the opening 201. The filter mechanism 3 filters impurities and large debris from the sewage. The filtered sewage then enters the mixing chamber 2. The turbidity sensor 8 monitors the turbidity of the sewage in the mixing chamber 2 in real time, and the dissolved oxygen sensor 9 monitors the changes in dissolved oxygen in real time. When the turbidity and dissolved oxygen concentration are detected to be too high, the flocculant storage tank 5 and the disinfectant storage tank 6 inject the corresponding agents into the mixing chamber 2 through the delivery pipe 7. The electric valve 71 controls the opening and closing of the delivery pipe 7 to allow the agents to flow. The flocculant can be added through the control system of the control box 23. After mixing, the treated wastewater is discharged into the machine body 1 through the discharge pipe 10. At this time, the motor 12 continuously drives the transmission shaft 13 to rotate, thereby driving the stirring plate 14 to stir in the inner cavity of the machine body 1, which can promote the full mixing of flocculant, disinfectant and wastewater. Then, the operator controls the flow rate of wastewater discharged from the drain pipe 15 through the drain electric valve 16. The symmetrical layout of the four corner support legs 11 makes the machine body 1 evenly bear the load. The above is the working principle of the automatic monitoring and discharge device for air conditioning cooling water quality.

Claims

1. An environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device, comprising a body (1), a flocculant storage tank (5), a disinfectant storage tank (6), and a pre-water quality monitoring tank (17), characterized in that: A mixing chamber (2) is provided at the upper end of the body (1). An opening (201) is provided at the upper end of the mixing chamber (2). A filter mechanism (3) is provided inside the opening (201). Limiting blocks (4) are provided on both sides of the upper surface of the filter mechanism (3). The flocculant storage tank (5) is installed on the left side of the upper end of the body (1). The disinfectant storage tank (6) is installed on the right side of the upper end of the body (1). A delivery pipe (7) is installed at the lower end of both the flocculant storage tank (5) and the disinfectant storage tank (6). The pre-water quality monitoring tank (17) is located on the left side of the body (1). A cooling water inlet is provided on the lower left side of the pre-water quality monitoring tank (17). A conductivity sensor (19) is installed at the lower right end of the pre-water quality monitoring tank (17). An outlet pipe (18) is installed on the upper right side of the pre-water quality monitoring tank (17). An electric three-way valve (20) is installed on the outlet pipe (18). One interface of the electric three-way valve (20) is connected to the cooling water outlet (172), and the other interface of the electric three-way valve (20) is connected to the cooling water drain pipe (21). The cooling water drain pipe (21) is led to the top of the opening (201). A detachable flange blind plate (22) is installed at the bottom of the pre-water quality monitoring tank (17). A control box (23) is installed on one side of the body (1). A turbidity sensor (8) is installed on one side of the inner cavity of the mixing chamber (2), and a dissolved oxygen sensor (9) is installed on the other side of the inner cavity of the mixing chamber (2). A feed pipe (10) is provided at the center of the lower end of the mixing chamber (2). Electric valves (71) are installed on the pipe bodies of both sets of liquid delivery pipes (7) and the feed pipe (10). A motor (12) is installed at the lower end of the mixing chamber (2). A drive shaft (13) is installed at the output end of the motor (12). A stirring plate (14) is installed on the outer surface of the drive shaft (13). A drain pipe (15) is provided at the lower end of one side of the machine body (1). A drain electric valve (16) is installed at the center of the drain pipe (15).

2. The environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device according to claim 1, characterized in that: Two sets of liquid delivery pipes (7) are connected to the two sides of the mixing chamber (2) respectively, with the end away from the flocculant storage tank (5) and the disinfectant storage tank (6). The lower end of the mixing chamber (2) is funnel-shaped.

3. The environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device according to claim 1, characterized in that: The limiting block (4) is provided in four sets, and the four sets of the limiting block (4) respectively abut against the upper edge of the opening (201).

4. The environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device according to claim 2, characterized in that: The flocculant storage tank (5) and the disinfectant storage tank (6) are symmetrically arranged, and the two sets of delivery pipes (7) are symmetrically arranged.

5. The environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device according to claim 1, characterized in that: The pre-water quality monitoring tank (17) adopts a closed tank structure. The cooling water inlet (171) and the conductivity sensor (19) are both located at the lower part of the pre-water quality monitoring tank (17) and are arranged symmetrically. The water outlet (18) is located at the upper end of the pre-water quality monitoring tank (17), and the water outlet (18) is equipped with an electric three-way valve (20). The two outlets of the electric three-way valve (20) are respectively connected to the cooling water drain pipe (21) and the cooling water outlet (172). The end of the cooling water drain pipe (21) away from the electric three-way valve (20) is located above the opening (201).

6. The environmentally friendly open cooling water system water quality automatic monitoring and sewage discharge device according to claim 1, characterized in that: The motor (12) is used to drive the transmission shaft (13) to rotate around its axis, and support legs (11) are provided at the four corners of the lower end of the body (1).

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