A water circulating system dosing device

Abstract

The application discloses a kind of dosing device of circulating water system, belong to water treatment equipment technical field, the dosing device of the application includes mixing tank, third pump body is connected to mixing tank, third pump body is connected with unloading valve, mixing tank upper portion has cooling tower communicated therewith, mixing tank is connected with external heat exchanger by first pipeline, heat exchanger outlet is connected with cooling tower by third pipeline, heat exchanger outlet is also connected with mixing tank by second pipeline.Second pump body is provided on first pipeline.The application can regulate and control water body and reagent input according to working condition change, and can ensure that reagent mixed solution is evenly dispersed in closed loop system, solves the problem that adding adjustment lags, reagent and water body are not mixed evenly.

Description

Technical Field

[0001] This invention relates to the field of water treatment equipment technology, and specifically to a chemical dosing device for a circulating water system. Background Technology

[0002] Industrial circulating water is mainly used in cooling water systems, hence the name circulating cooling water. This is because industrial cooling water accounts for over 90% of total water consumption. Circulating cooling water systems are divided into closed (sealed) and open types. In a closed cooling water system, the cooling water is not exposed to air, resulting in minimal water loss, and the content of various minerals and ions in the water generally remains unchanged. In an open circulating water system, water recooling is achieved through a cooling tower. Therefore, the cooling water comes into contact with air during recirculation, and some water is continuously lost through evaporation as it passes through the cooling tower. Consequently, the content of various minerals and ions in the water is continuously concentrated and increased. Therefore, it is necessary to add chemicals and ensure they are evenly mixed with the water before being introduced into the circulating water system to ensure its stable operation. Existing chemical dosing control devices can be mainly divided into two types: one is a time-based controller for chemical dosing, which is manually set to add chemicals at fixed time intervals; the other is the addition of fluorescent agents, which uses fluorescence tracer methods to detect the chemical content and adjust the dosage based on the detected chemical content. Neither of the above two dosing control devices can automatically and precisely adjust the dosage when system conditions change; manual adjustments are required. This results in a certain lag in dosage adjustments, leading to some degree of pesticide waste in the system.

[0003] Currently, there are relevant improvements in reagent dosing technology. For example, the existing patent DE202024103698U1 discloses a method for dispensing calcium hypochlorite solution or calcium hypochlorite suspension into a water system. This system includes a dispensing pump and a dispensing pipeline connected to the pump and the water system. The dispensing pipeline has a first pipeline section that is at least substantially vertically oriented and can be connected to a dispensing pump having a mixing tank or storage tank for the calcium hypochlorite solution or suspension to deliver the solution or suspension into the pipeline. This technology can prevent clogging in the feeding system and its components. Another example is the existing patent MX383094B, which discloses a water treatment system and method that allows the removal of multiple contaminants by integrating electrocoagulation, clarification, filtration, and nanofiltration or reverse osmosis, thereby achieving a high percentage of suspended and dissolved contaminant removal from groundwater or wells, treated wastewater, and especially water from heat exchange equipment. The treated water quality is suitable for use in ion exchange systems and even low-pressure boilers. However, existing dosing devices generally lack a pretreatment step for both water and chemicals. Even if pretreatment is present, the mixing components in the pretreatment are mostly single propellers or flat plate mixers. During mixing, the water forms a fixed flow field, making it difficult for the chemicals to fully contact the circulating water. Furthermore, existing chemical dosing technologies cannot accurately adjust the dosage when system operating conditions change. Therefore, there is still room for improvement in existing chemical dosing technologies regarding chemical and water pretreatment and water monitoring. Summary of the Invention

[0004] The purpose of this invention is to provide a dosing device for a circulating water system, which can adjust the water and chemical input according to changes in operating conditions, and ensure uniform diffusion of the chemical mixture in the closed-loop system, thus solving the problems of delayed dosing adjustment and uneven mixing of chemical and water.

[0005] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: a chemical dosing device for a circulating water system, comprising a mixing tank, a third pump body connected to the mixing tank, a discharge valve connected to the third pump body, a cooling tower connected to the mixing tank above the mixing tank, an external heat exchanger connected to the mixing tank via a first pipeline, the outlet of the heat exchanger connected to the cooling tower via a third pipeline, and the outlet of the heat exchanger also connected to the mixing tank via a second pipeline. A second pump body is provided on the first pipeline.

[0006] This invention connects the mixing tank directly to the cooling tower and constructs a closed-loop circulation path through the first, second, and third pipelines. The heat exchanger outlet water can flow back to the cooling tower and the mixing tank in both directions. The third pump is connected to the mixing tank, the discharge valve, and the second pipeline to realize the transportation of the chemical mixture and the extraction of system water. This solves the problems of a single circulation path and inefficient water flow, improves the flexibility of water and chemical adjustment when operating conditions change, and ensures uniform diffusion of the chemical mixture in the closed-loop system. It avoids the problems of waste or corrosion and scaling caused by excessively high local concentrations, thus improving the anti-corrosion and scale inhibition effect and overall operational reliability of the circulating water system.

[0007] According to one embodiment of the present invention, a detector is provided on the heat exchanger. A second pipeline is connected to the outlet water pipe of the heat exchanger, and the outlet water pipe port of the heat exchanger has a tee pipe for realizing water diversion. One end of the tee pipe is connected to the detector through a pipeline. The detector includes an online conductivity meter and a reagent concentration sensor, i.e., a fluorescent tracer, for continuously monitoring water quality and reagent concentration data. The other end of the tee pipe is connected to a third pipeline. The detector is electrically connected to the discharge valve and the first pump body. Further, by electrically connecting the detector to the discharge valve and the first pump body, the reagent dosing can be quickly adjusted based on real-time monitoring results, avoiding the lag of manual adjustment. When the detected data deviates from the set value, the dosing rate of the first pump body and the on / off state of the discharge valve are immediately adjusted to ensure that the reagent concentration is always maintained within the optimal range. This reduces reagent waste and avoids equipment damage due to insufficient concentration.

[0008] According to one embodiment of the present invention, a frame is provided outside the mixing tank, and at least one reagent tank is provided on the frame. The reagent tank is connected to the mixing tank via a pipeline, and a first pump is provided on the pipeline connecting the reagent tank and the mixing tank. The reagent tank has an auxiliary dosing pipeline, which is connected to a cooling tower and can inject the reagent into the liquid flow pipeline inside the cooling tower. The frame can hold different types of tanks for dosing. A flow meter is provided on the output pipeline of the first pump to adjust the reagent delivery rate and dosage as needed, avoiding problems such as imbalance, overdosing, or underdosing caused by manual dosing or a single reagent tank in traditional devices.

[0009] According to one embodiment of the present invention, the mixing tank has a channel communicating with the cooling tower, the channel being separated by a partition with through holes. The partition separates the communication channel between the mixing tank and the cooling tower, and the through holes in the partition guide the cooling tower return water into the mixing tank, preventing splashing or sedimentation of the reagents caused by water flow impact. It also helps to coordinate with the stirring action of the first and second stirrers within the mixing tank, enabling the return water and reagents to mix quickly and uniformly. This solves the problems of low mixing efficiency and uneven concentration caused by the lack of separation in traditional channels.

[0010] According to one embodiment of the present invention, a first agitator is provided at the center of the mixing tank. The first agitator includes a first stirring shaft coaxial with the mixing tank, and a first motor connected to the first stirring shaft is located at the bottom of the mixing tank. A spiral plate is spirally arranged on the first stirring shaft, and the spiral plate has openings. The spiral plate spirally arranged on the first stirring shaft is used to push the water to form an up-and-down circulating flow when rotating. The openings on the spiral plate can break the flow field barrier to avoid water stratification and realize the agitation of water and reagent in the central area. This solves the problems of low mixing efficiency and local accumulation of reagent in traditional stirring structures. Furthermore, by cooperating with the cooling tower return water guided by the through holes of the baffle, the reagent can be rapidly and uniformly diffused in the mixing tank.

[0011] According to one embodiment of the present invention, a first plate perpendicular to its axis is symmetrically provided on both sides of the end of the first stirring shaft, and a second plate is inclinedly connected to the bottom of the first plate. The second plates at the bottom of the two first plates are inclined in different directions. When the first motor drives the first stirring shaft to rotate, the two second plates form a bidirectional turbulent flow field, thereby breaking the single up-and-down circulating flow formed by the spiral plate to stir the water at the bottom and top of the mixing tank. This helps to mix the reagent and water and promotes the exchange of water between the upper and lower layers, and also helps to eliminate the stirring blind zone.

[0012] According to one embodiment of the present invention, a second annular plate is connected to the inner wall of the mixing tank, and the second annular plate forms an angle with the inner wall of the mixing tank. An elastic element is provided between the second annular plate and the mixing tank. A first annular plate is provided at the non-connected end of the second annular plate and the mixing tank, the inner surface of the first annular plate being connected to the second annular plate, and the outer surface being connected to the inner wall of the mixing tank. The angle formed between the second annular plate and the inner wall of the mixing tank can change the direction of water flow at the tank wall, thereby breaking the fixed vortex formed when the first and second agitators are working, preventing the reagent from accumulating along the tank wall and forming a mixing dead zone, and guiding the insufficiently mixed water and reagent on the side of the tank wall to converge towards the central area of ​​the mixing tank to improve the overall mixing uniformity. Furthermore, the elastic element connected between the second annular plate and the mixing tank can absorb the impact force of the stirring water flow on the second annular plate to prevent local deformation of the second annular plate from reducing its guiding effect, and can also cause the second annular plate to sway slightly through elastic deformation to affect the direction of water flow at the tank wall.

[0013] According to one embodiment of the present invention, the third pump body has three inlets and outlets, which are respectively connected to a mixing tank, a discharge valve, and a second pipeline. The third pump body is a bidirectional pump. It can deliver the mixed reagent solution into the target circulating water system through the discharge valve, and it can also draw water from inside the circulating water system into the mixing tank. At the same time, the third pump body can also draw water from the heat exchanger into the mixing tank through the second pipeline. This enables rapid response according to changes in operating conditions, that is, it can work with the detector and the first pump body to regulate and ensure stable reagent concentration, thereby reducing waste.

[0014] According to one embodiment of the present invention, the mixing tank is equipped with a backup pipeline. This backup pipeline is used for switching in case of emergencies such as pipeline blockage or failure of the first or third pump, enabling emergency delivery of the reagent mixture or replenishment and circulation of the system water.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention constructs a closed-loop circulation path through a mixing tank, a cooling tower, and a heat exchanger. Combined with a second pump and a bidirectional third pump, it achieves dynamic adaptation of water and chemicals when operating conditions change. Furthermore, by setting a first and second agitator in the mixing tank and incorporating the flow-guiding disturbance design of the first and second ring plates, it eliminates stirring blind zones and tank wall eddies, improving the mixing uniformity of chemicals and water. More importantly, the present invention uses a detector to quickly adjust the chemical dosing based on real-time monitoring results, avoiding the lag of manual adjustments. When the detection data deviates from the set value, it immediately adjusts the dosing rate of the first pump and the opening / closing state of the discharge valve to ensure that the chemical concentration is always maintained within the optimal range. This reduces chemical waste and avoids equipment damage caused by insufficient concentration. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a chemical dosing device for a circulating water system according to the present invention; Figure 2 This is a schematic diagram of the dosing process of a chemical dosing device for a circulating water system according to the present invention; Figure 3 This is a schematic diagram of the heat exchanger scheme of the present invention; Figure 4 This is a schematic diagram of the connection scheme of the cooling tower, mixing tank and reagent tank of the present invention; Figure 5 This is a schematic diagram of the internal structure of the mixing tank of the present invention; Figure 6 This is a schematic diagram of the second stirrer design of the present invention; Figure 7 This is a schematic diagram of the first stirrer design of the present invention; Figure 8 This is a partial schematic diagram of the mixing tank of the present invention; Figure 9 This is a schematic diagram of the internal structure of the second pipeline of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 10. Cooling tower; 11. Discharge valve; 12. First pipeline; 13. Second pump body; 14. Second pipeline; 141. First guide plate; 142. Second guide plate; 15. Third pump body; 16. Backup pipeline; 20. Chemical tank; 21. Frame; 22. Flow meter; 23. First pump body; 30. Heat exchanger; 31. Third pipeline; 32. T-joint; 40. Detector; 50. Mixing tank; 51. Baffle; 52. First ring plate; 53. Second ring plate; 54. Elastic element; 60. Second agitator; 61. Second motor; 62. Second stirring blade; 63. Stirring disc; 64. Second stirring shaft; 65. Auxiliary plate; 70. First agitator; 71. First stirring shaft; 72. First plate; 73. Second plate; 74. Spiral plate; 75. First motor. Detailed Implementation

[0019] 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.

[0020] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example 1: As shown in the attached figure Figure 1 - Appendix Figure 4 As shown, a circulating water system dosing device includes a mixing tank 50, a third pump body 15 connected to the mixing tank 50, a discharge valve 11 connected to the third pump body 15, a cooling tower 10 connected above the mixing tank 50, and an external heat exchanger 30 connected to the mixing tank 50 via a first pipe 12. The outlet of the heat exchanger 30 is connected to the cooling tower 10 via a third pipe 31, and the outlet of the heat exchanger 30 is also connected to the mixing tank 50 via a second pipe 14. A second pump body 13 is provided on the first pipe 12.

[0022] This invention connects the mixing tank 50 directly to the cooling tower 10 and constructs a closed-loop circulation path through the first pipeline 12, the third pipeline 31, and the second pipeline 14. The water outlet of the heat exchanger 30 can flow back to the cooling tower 10 and the mixing tank 50 in both directions. The third pump body 15 is connected to the mixing tank 50, the discharge valve 11, and the second pipeline 14 to realize the transportation of the chemical mixture and the extraction of system water. This solves the problems of a single circulation path and inefficient water flow, improves the flexibility of water and chemical adjustment when operating conditions change, and ensures uniform diffusion of the chemical mixture in the closed-loop system. It avoids the problems of waste or corrosion and scaling caused by excessive local concentration, thus improving the anti-corrosion and scale inhibition effect and overall operational reliability of the circulating water system.

[0023] A frame 21 is provided outside the mixing tank 50. At least one reagent tank 20 is mounted on the frame 21. The reagent tank 20 is connected to the mixing tank 50 via a pipeline. A first pump body 23 is provided on the pipeline connecting the reagent tank 20 and the mixing tank 50. The reagent tank 20 has an auxiliary dosing pipeline, which is connected to the cooling tower 10 and can add the reagent into the liquid flow pipeline inside the cooling tower 10. The frame 21 can hold different types of tanks for dosing. A flow meter 22 is provided on the output pipeline of the first pump body 23 to adjust the reagent delivery rate and dosage as needed, avoiding problems such as imbalance, overdosing, or underdosing caused by manual dosing or a single reagent tank in traditional devices.

[0024] See appendix Figure 5 As shown, the mixing tank 50 has a channel communicating with the cooling tower 10. The channel is separated by a partition 51, which has through holes. The partition 51 separates the communication channel between the mixing tank 50 and the cooling tower 10, and the through holes in the partition 51 are used to guide the return water from the cooling tower 10 into the mixing tank 50. This avoids splashing or sedimentation of the chemicals caused by water flow impact. It also helps to cooperate with the stirring action of the first stirrer 70 and the second stirrer 60 in the mixing tank 50, so that the return water and chemicals can be quickly and evenly mixed. This solves the problems of low mixing efficiency and uneven concentration caused by the lack of separation in traditional channels.

[0025] See appendix Figure 7As shown, a first agitator 70 is located at the center of the mixing tank 50. The first agitator 70 includes a first stirring shaft 71 coaxial with the mixing tank 50. A first motor 75 connected to the first stirring shaft 71 is located at the bottom of the mixing tank 50. A spiral plate 74 is spirally arranged on the first stirring shaft 71, and the spiral plate 74 has openings. The spiral plate 74 spirally arranged on the first stirring shaft 71 is used to push the water to form an up-and-down circulating flow when rotating. The openings on the spiral plate 74 can break the flow field barrier to avoid water stratification and realize the agitation of water and chemicals in the central area. This solves the problems of low mixing efficiency and local accumulation of chemicals in traditional stirring structures. Furthermore, by cooperating with the cooling tower 10 reflux water guided by the through holes of the baffle 51, the chemicals can be rapidly and uniformly diffused in the mixing tank 50.

[0026] The first stirring shaft 71 has symmetrical first plates 72 perpendicular to its axis on both sides of its end. The bottom of the first plates 72 has a second plate 73 inclined to it. The second plates 73 at the bottom of the two first plates 72 are inclined in different directions. When the first motor 75 drives the first stirring shaft 71 to rotate, the two second plates 73 form a bidirectional turbulent flow field. This breaks the single up-and-down circulation flow formed by the spiral plate 74 to stir the water at the bottom and top of the mixing tank 50, which helps to mix the reagent and water and promotes the exchange of water between the upper and lower layers. It also helps to eliminate the stirring blind zone.

[0027] See appendix Figure 8 As shown, a second annular plate 53 is connected to the inner wall of the mixing tank 50, and the second annular plate 53 forms an angle with the inner wall of the mixing tank 50. An elastic element 54 is provided between the second annular plate 53 and the mixing tank 50. At the non-connected end of the second annular plate 53 and the mixing tank 50, there is a first annular plate 52, the inner surface of the first annular plate 52 is connected to the second annular plate 53, and the outer surface is connected to the inner wall of the mixing tank 50. The angle formed between the second ring plate 53 and the inner wall of the mixing tank 50 can change the direction of water flow at the tank wall. This breaks the fixed vortex formed when the first agitator 70 and the second agitator 60 are working, avoids the accumulation of the agent along the tank wall to form a mixing dead zone, and guides the insufficiently mixed water and agent on the side of the tank wall to converge towards the central area of ​​the mixing tank 50 to improve the overall mixing uniformity. Furthermore, the elastic element 54 is connected between the second ring plate 53 and the mixing tank 50. It can absorb the impact force of the stirring water flow on the second ring plate 53 to prevent the second ring plate 53 from local deformation and reducing its guiding effect. It can also cause the second ring plate 53 to shake slightly through elastic deformation to affect the direction of water flow at the tank wall.

[0028] See appendix Figures 1-4As shown, the third pump body 15 has three inlets and outlets, which are respectively connected to the mixing tank 50, the discharge valve 11, and the second pipeline 14. The third pump body 15 is a bidirectional pump. It can deliver the mixed reagent solution into the target circulating water system through the discharge valve 11, and it can also draw water from inside the circulating water system into the mixing tank 50. At the same time, the third pump body 15 can also draw water from the heat exchanger 30 into the mixing tank 50 through the second pipeline 14. This allows for rapid response to changes in operating conditions, that is, it can work with the detector 40 and the first pump body 23 to regulate and ensure stable reagent concentration, thereby reducing waste.

[0029] The mixing tank 50 is equipped with a backup pipeline 16. It is used for switching in case of emergencies such as pipeline blockage or failure of the first pump body 23 or the third pump body 15, and the backup pipeline 16 enables emergency delivery of the chemical mixture or replenishment and circulation of the system water.

[0030] Example 2: See appendix Figures 1-3 As shown, in this embodiment, a detector 40 is provided on the heat exchanger 30. A second pipe 14 is connected to the outlet pipe of the heat exchanger 30. The outlet pipe port of the heat exchanger 30 has a tee pipe 32, which is used to realize water diversion. One end of the tee pipe 32 is connected to the detector 40 through a pipe. The detector 40 includes an online conductivity meter and a reagent concentration sensor, i.e., a fluorescent tracer, for continuously monitoring water quality and reagent concentration data. The other end of the tee pipe 32 is connected to a third pipe 31. The detector 40 is electrically connected to the discharge valve 11 and the first pump body 23. Furthermore, the detector 40 is electrically connected to the discharge valve 11 and the first pump body 23. This allows for rapid feedback and control of the drug dosage based on real-time monitoring results, avoiding the lag of manual adjustments. When the detection data deviates from the set value, the drug dosage rate of the first pump body 23 and the on / off state of the discharge valve 11 are immediately adjusted to ensure that the drug concentration is always maintained within the optimal range. This reduces drug waste and avoids equipment damage caused by insufficient concentration.

[0031] Example 3: See appendix Figure 5 As shown, in this embodiment, a second stirrer 60 is provided inside the mixing tank 50. (See attached diagram) Figure 6As shown, the second stirrer 60 has a second stirring shaft 64, which is spaced apart from the first stirrer 70. Preferably, the second stirrer 60 is located close to the inner wall of the mixing tank 50. A second motor 61 for driving the second stirring shaft 64 is provided on the partition plate 51. The second stirring shaft 64 is surrounded by a second stirring blade 62. The bottom end of the second stirring shaft 64 is adjacent to the bottom of the mixing tank 50, and the two are spaced apart. The bottom of the second stirring shaft 64 is connected to a horizontally arranged stirring plate 63 with openings. An inclined auxiliary plate 65 is arranged around the side of the stirring plate 63. The auxiliary plate 65 is a plate-shaped structure.

[0032] The second motor 61 drives the second stirring shaft 64 to rotate, and the second stirring shaft 64 synchronously drives the second stirring blades 62 arranged around it to rotate. Because the second stirring blades 60 are close to the inner wall of the mixing tank 50 and are spaced apart from the first stirring blades 70, the second stirring blades 62 directly act on the water body on the side of the tank wall, which is prone to forming a fixed vortex. This is used to break the state of the agent accumulating along the tank wall and guide the water body on the side wall to flow towards the center. The stirring plate 63 at the bottom of the second stirring shaft 64 rotates horizontally with the shaft. Its open design allows the water body at the bottom of the tank to pass through vertically, avoiding water stagnation and the formation of sedimentation zones. In conjunction with the inclined auxiliary plate 65 surrounding the side of the stirring plate 63, it further promotes the water body at the bottom of the tank to form a radial diffusion flow, improving the mixing effect of the agent and water body at the bottom of the tank. Furthermore, by setting the second stirring blades 60 in the mixing tank 50 in conjunction with the first stirring blades 70, the problem of incomplete mixing coverage and the existence of mixing blind spots by a single stirring structure is solved.

[0033] Example 4: In this embodiment, see Appendix Figure 1 Appendix Figure 3 Appendix Figure 9 As shown, a second guide plate 142 is arranged around the inner side of the second pipe 14. The second guide plate 142 is parallel to the axis of the second pipe 14, and one end is connected to the inner wall of the second pipe 14. The other end of the second guide plate 142 is connected to a first guide plate 141, and the first guide plate 141 forms an angle with the axis of the second pipe 14. At least two second guide plates 142 are arranged around the same cross section of the second pipe 14. When water flows through the first guide plate 141 and the second guide plate 142, it can be diverted and its flow direction can be forcibly changed, forming a turbulent flow state. This allows the reagents carried by the water effluent from the heat exchanger 30 to be initially mixed evenly, improving the mixing effect of the subsequent first agitator 70 and second agitator 60.

[0034] It should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0036] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A dosing device for a circulating water system, comprising a mixing tank (50), wherein a third pump body (15) is externally connected to the mixing tank (50), and the third pump body (15) is connected to a discharge valve (11), characterized in that, The mixing tank (50) has a cooling tower (10) connected to it. The mixing tank (50) is connected to an external heat exchanger (30) through a first pipe (12). The outlet of the heat exchanger (30) is connected to the cooling tower (10) through a third pipe (31). The outlet of the heat exchanger (30) is also connected to the mixing tank (50) through a second pipe (14).

2. The dosing device for a circulating water system according to claim 1, characterized in that, The heat exchanger (30) is equipped with a detector (40).

3. The dosing device for a circulating water system according to claim 1, characterized in that, The mixing tank (50) is provided with a frame (21), and at least one medicine tank (20) is provided on the frame (21). The medicine tank (20) is connected to the mixing tank (50) through a pipeline. A first pump body (23) is provided on the pipeline connecting the medicine tank (20) and the mixing tank (50).

4. The dosing device for a circulating water system according to claim 1, characterized in that, The mixing tank (50) has a channel communicating with the cooling tower (10), the channel being separated by a partition (51) having through holes.

5. A chemical dosing device for a circulating water system according to claim 1, characterized in that, The mixing tank (50) is provided with a first stirrer (70) at the center of its interior. The first stirrer (70) includes a first stirring shaft (71) coaxial with the mixing tank (50). The bottom of the mixing tank (50) has a first motor (75) connected to the first stirring shaft (71). The first stirring shaft (71) has a spiral plate (74) spirally arranged around it, and the spiral plate (74) has an opening.

6. A chemical dosing device for a circulating water system according to claim 5, characterized in that, The first stirring shaft (71) has a first plate (72) symmetrically arranged on both sides of its end, perpendicular to its axis, and a second plate (73) inclinedly connected to the bottom of the first plate (72).

7. A chemical dosing device for a circulating water system according to claim 1, characterized in that, A second ring plate (53) is connected to the inner wall of the mixing tank (50), and the second ring plate (53) has an angle with the inner wall of the mixing tank (50).

8. A chemical dosing device for a circulating water system according to claim 7, characterized in that, The second ring plate (53) has an elastic element (54) between it and the mixing tank (50).

9. A chemical dosing device for a circulating water system according to claim 1, characterized in that, The third pump body (15) has three inlets and outlets, which are respectively connected to the mixing tank (50), the discharge valve (11) and the second pipeline (14).

10. A chemical dosing device for a circulating water system according to claim 1, characterized in that, The mixing tank (50) is equipped with a backup pipeline (16).

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