Efficient water-saving multi-level water level control pool and method

Abstract

The invention relates to an efficient water-saving multi-level water level control pool and method, and belongs to the technical field of water resource circulation. Comprising a circulating water pool and a plurality of water supplementing pipelines, a plurality of water supplementing holes are formed in the side wall of the circulating water pool, and the height positions from the water supplementing holes to the bottom of the circulating water pool are different; the water replenishing pipelines are independently connected with the water replenishing holes respectively, and floating ball valves are arranged at the joints and used for controlling communication and plugging of the water replenishing pipelines; when the water level in the circulating water pool is lower than the height position of the corresponding water replenishing hole, the water replenishing pipeline connected with the water replenishing hole is communicated, and water is replenished to the circulating water pool; and when the water level in the circulating water pool is higher than the height position of the corresponding water replenishing hole, the water replenishing pipeline connected with the water replenishing hole is blocked. By setting the water level control parameters of different varieties of replenished water and hierarchically setting the water level control parameters of multiple varieties of water, the low-quality water is preferentially replenished for production, and the high-quality water is replenished when the water quantity is insufficient.

Description

Technical Field

[0001] The present invention belongs to the technical field of water resource circulation, and relates to a high-efficiency, water-saving multi-level water level control pool and method. Background Art

[0002] As a foundational industry in the national economy, the steel industry is characterized by high energy and water consumption. Statistics show that the entire steel production process (covering ironmaking, steelmaking, continuous casting, and rolling) consumes 2-5 cubic meters of water per ton of steel. Cooling, dust removal, phosphorus removal, and slag flushing processes account for over 70% of this total water consumption. With global water shortages and tightening environmental regulations, the traditional linear "water intake-use-discharge" model of steel production faces severe challenges. Promoting water recycling technologies has become a core issue for the industry's sustainable development.

[0003] In the existing technology, different wastewaters need to be treated with different treatment equipment to undergo filtration, sedimentation and other processes before being uniformly discharged into a circulating water pool for subsequent recycling. However, in actual situations, there is hierarchical control over the utilization of different wastewaters. In the process of replenishing water to the circulating water pool, there are also different water replenishment requirements due to the hierarchical control of wastewater utilization. At present, when the system replenishment involves replenishing multiple varieties of water, the replenishment method for multiple varieties of water mostly adopts manual control (remote and on-site). During the regulation, it is impossible to effectively control the replenishment balance between multiple varieties of water, the operation is frequent, and it is difficult to balance. In addition, the traditional single-point replenishment frequently starts and stops the water pump due to water pressure fluctuations, which reduces mechanical wear, shortens the replenishment response time, and maintains the water level of the circulating water pool stable. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a multi-level water level control pool and method that is efficient and water-saving. By setting the water level control parameters for different types of water replenishment and the hierarchical setting of the water level control parameters for multiple types of water, low-quality water can be replenished for production first, and high-quality water can be replenished when the water supply is insufficient.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An efficient and water-saving multi-level water level control pool includes a circulating water pool and multiple water supply pipelines. The side wall of the circulating water pool is provided with multiple water supply holes, and the height positions of the water supply holes from the bottom of the circulating water pool are different;

[0007] The water supply pipelines are independently connected to the water supply holes, and a float valve is provided at the connection point, and the float valve is used to control the connection and blocking of the water supply pipeline; when the water level in the circulating water pool is lower than the height position of the corresponding water supply hole, the water supply pipeline connected to the water supply hole is connected and water is supplied to the circulating water pool; when the water level in the circulating water pool is higher than the height position of the corresponding water supply hole, the water supply pipeline connected to the water supply hole is blocked.

[0008] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, the float valve includes a valve body, a connecting water pipe and a float;

[0009] The water inlet end of the valve body is connected to the water supply pipeline, and the water outlet end is connected to the connecting water pipe. The end of the connecting water pipe away from the valve body is located in the water supply hole; the float is rotatably connected to the connecting water pipe through a float handle to control the connection and blocking of the water supply pipeline.

[0010] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, a water level sensor is further provided at the connection between the communicating water pipe and the float handle to display the water level in the circulating water pool in real time.

[0011] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, the valve body is further provided with an opening and closing valve, and the opening and closing valve is used to control the communication and blocking between the connecting water pipe and the valve body.

[0012] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, the water supply pipeline includes a coking recycled water pipeline, and the water supply hole connecting the coking recycled water pipeline and the circulating water pool is located at a height of 3-6.6m.

[0013] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, the water supply pipeline also includes a water slag drainage pipeline, and the height of the water supply hole connecting the water slag drainage pipeline to the circulating water pool is located at 2.5-6m.

[0014] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, the water supply pipeline also includes a concentrated brine pipeline, and the water supply hole connecting the concentrated brine pipeline to the circulating water pool is located at a height of 2.5-5m.

[0015] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, the water supply pipeline also includes a recycled water pipeline, and the water supply hole connecting the recycled water pipeline to the circulating water pool is located at a height of 2-3.5m.

[0016] Optionally, according to the efficient and water-saving multi-level water level control pool of the present invention, the water supply pipeline also includes a clean circulating water pipeline, and the height of the water supply hole connecting the clean circulating water pipeline to the circulating water pool is located at 1.5-2.5m.

[0017] In addition, the present invention also provides a multi-level water level control method with high efficiency and water saving, comprising the following steps:

[0018] S1. Determine the quality, environmental risks and water consumption requirements of low-quality water sources in the factory area;

[0019] S2. Determine the existing water volume in the circulating water pool;

[0020] S3. Calculate the difference between water consumption and water storage to obtain the final water level in the circulating water pool;

[0021] S4. Based on the final water level in the circulating water pool, the water supply pipes that are higher than the final water level are opened in sequence, with the water supply pipe at the highest position being opened first;

[0022] S5. When the water supply of the water supply pipeline at the highest position is completed, and the water level in the circulating water pool is lower than the water supply pipeline at the second height position, the water supply pipeline at the second height position is opened; otherwise, the water supply is stopped; and the water supply pipelines at the remaining height positions are opened in turn in this cycle.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention uses hierarchical control to prioritize the replenishment of different water types, thereby determining the priority replenishment pipelines. Multiple replenishment holes are distributed along the sidewalls of the circulating water tank at different heights, combined with independent replenishment pipelines and float valves to create a "gradient replenishment" model. When the water level drops, the highest replenishment hole is prioritized for replenishment. As the water level rises, the lower replenishment holes gradually close, achieving dynamic water level balance. This model achieves water use control at different levels.

[0025] 2. When low-quality water is insufficient, the hidden danger of production safety caused by low water level in the pool can be effectively controlled. The present invention can control the water consumption at different levels through the float valve, replenish the water supply to the safe water level in time, and ensure the reliability of the external water supply of the circulating water pool;

[0026] 3. It is convenient for operators to timely control water level safety and save water efficiently, avoiding the frequent start and stop of water pumps caused by water pressure fluctuations in traditional single-point water replenishment, reducing mechanical wear, shortening water replenishment response time, and maintaining stable water level in the circulating water pool;

[0027] 4. It is convenient for management personnel to promote water conservation work in a timely manner, solve the problem of efficient use of low-quality water and conservation of water resources, eliminate the problem of excessive or insufficient water replenishment caused by water level fluctuations under the control of traditional single float valve, and reduce water resource waste.

[0028] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0030] Figure 1 This is a schematic diagram of the structure of the circulating water pool provided by the present invention;

[0031] Figure 2 This is a structural schematic diagram of the float valve provided by the present invention.

[0032] Reference numerals:

[0033] 1-circulating water tank; 2-float valve; 3-coking recycled water pipeline; 4-slag drainage pipeline; 5-brine pipeline; 6-recycled water pipeline; 7-water supply pipeline; 8-water supply pump; 9-clean circulating water pipeline; 10-water level signal device;

[0034] 21-valve body; 22-connecting water pipe; 23-float; 24-float handle; 25-water level sensor; 26-opening and closing valve. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0036] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0037] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] Example 1:

[0039] See also Figure 1 and Figure 2 As shown, the present invention provides a multi-level water level control pool with high efficiency and water saving, comprising a circulating water pool 1 and a plurality of water supply pipelines, wherein a plurality of water supply holes are provided on the side wall of the circulating water pool 1, and the height positions of the water supply holes from the bottom of the circulating water pool 1 are different;

[0040] The water supply pipelines are independently connected to the water supply holes, and a float valve 2 is provided at the connection point. The float valve 2 is used to control the connection and blocking of the water supply pipeline. When the water level in the circulating water pool 1 is lower than the height of the corresponding water supply hole, the water supply pipeline connected to the water supply hole is connected and water is supplied to the circulating water pool 1. When the water level in the circulating water pool 1 is higher than the height of the corresponding water supply hole, the water supply pipeline connected to the water supply hole is blocked. The circulating water pool 1 is connected to the remaining water-using equipment through a water supply pipeline 7. A water supply pump 8 is provided on the water supply pipeline 7 to transport the water in the circulating water pool 1 to the water-using equipment. In addition, a water level signaler 10 is also provided in the circulating water pool 1 for real-time display of the specific water level in the circulating water pool 1 and directly transmitting the water level signal to the background control system. After the background control system analyzes the signal of the water level signaler 10, it controls the opening and closing of the water supply pipeline at each level.

[0041] The priority of replenishment for different types of water is controlled in a hierarchical manner, and priority replenishment pipelines are then determined. Multiple replenishment holes are distributed according to height on the side wall of the circulating water tank 1. Together with independent replenishment pipelines and float valve 2, a "gradient replenishment" mode is formed. When the water level drops, the highest replenishment hole is activated first. As the water level rises, the lower replenishment holes gradually close, achieving dynamic water level balance. This mode achieves water use control at different levels.

[0042] See also Figure 2 As shown, the float valve 2 includes a valve body 21, a connecting water pipe 22, and a float 23. The water inlet end of the valve body 21 is connected to the water supply pipeline, and the water outlet end is connected to the connecting water pipe 22. The end of the connecting water pipe 22 away from the valve body 21 is located in the water supply hole. The float 23 is rotatably connected to the connecting water pipe 22 via a float handle 24 to control the connection and blockage of the water supply pipeline.

[0043] The operating principle of the float valve 2 is to control the opening and closing of a valve by relying on the lowering and rising of the float 23 in response to the liquid level. Float 23 circulates within the water surface of the circulating pool 1. When the liquid level in the circulating pool 1 drops, float 23 drops with it. The lever action of float handle 24 increases the valve opening, increasing the liquid supply. The reverse also works.

[0044] Furthermore, a water level sensor 25 is provided at the connection between the water pipe 22 and the float handle 24 to display the water level in the circulating water pool 1 in real time. The water level sensor 25 and the water level signal device 10 are combined to jointly display the water level signal in the circulating water pool 1. When the difference in the water level signals recorded by the two is within the error range (taking into account the factors of water surface fluctuation), the correct water level signal is determined, and the opening of the water supply pipeline at the corresponding position is controlled according to the water level signal. When the difference in the water level signals recorded by the two deviates from the error range, it indicates that one of the water level sensor 25 or the water level signal device 10 is faulty and needs to be repaired or replaced to ensure that the background control system can accurately control the opening and closing of the water supply pipeline at each level to avoid the problem of excessive or insufficient water supply caused by water level error.

[0045] Furthermore, the valve body 21 is further provided with an on-off valve 26, which is used to control the connection and blocking between the connecting water pipe 22 and the valve body 21. In certain specific circumstances, such as when the amount of low-quality water in the water supply pipeline at the highest position is sufficient to fully replenish the circulating water pool 1, or when the water demand of the circulating water pool 1 decreases, the water supply pipelines at other height positions can be directly closed through the on-off valve 26, and water can be continuously replenished only through the water supply pipeline at the highest position until the water level in the circulating water pool 1 reaches a suitable level, ensuring the priority use of low-quality water. Of course, in actual operation, the water supply pipelines at other height positions can also be opened in sequence for water replenishment.

[0046] In addition, there are certain quality requirements for certain water uses, and higher quality water is needed. At this time, the water supply pipeline at a higher position can be directly closed through the opening and closing valve 26, and then the water supply pipeline at a lower position can be opened to directly add higher quality water to the circulating water pool 1 to meet the water quality requirements.

[0047] Furthermore, the water replenishment pipeline includes the coking recycled water pipeline 3. The water replenishment hole connecting the coking recycled water pipeline 3 to the circulating water tank 1 is located at an elevation of 3-6.6 meters. Coking recycled water has a high salt content. If it is not prioritized for use, production adjustments may cause stagnation in the coking production system, thereby affecting normal coking operations. Alternatively, stagnation may cause pipeline leaks, making it impossible to ensure the coking system's "zero emissions" goal, and creating disruptive environmental risks. By prioritizing the consumption of coking recycled water, the environmental risks caused by coking wastewater are eliminated.

[0048] Furthermore, the water supply pipeline also includes a slag drainage pipeline 4, and the height of the water supply hole connecting the slag drainage pipeline 4 and the circulating water pool 1 is located at 2.5-6m. In the steel production process, slag drainage is solid-containing wastewater generated during the slag flushing process of the iron-making blast furnace. It contains a large amount of fine-grained slag (the main components are calcium silicate, aluminum silicate, etc.) and a small amount of suspended matter and alkaline substances. The recovery and treatment of slag drainage can avoid high-concentration wastewater, which directly affects the company's environmental compliance and reduces the difficulty of wastewater treatment. Slag drainage can be directly reused for blast furnace slag flushing, forming a "regional zero emission" slag water process.

[0049] Furthermore, the water supply pipeline also includes a concentrated brine pipeline 5. The water supply hole connecting the concentrated brine pipeline 5 to the circulating water tank 1 is located at an elevation of 2.5-5 meters. In steel production, concentrated brine is a high-salt wastewater produced by advanced wastewater treatment (such as reverse osmosis and electrodialysis). Its salt concentration (TDS ≥ 5000mg / L) is much higher than that of ordinary industrial wastewater. By adding concentrated brine to the blast furnace slag flushing system, the environmental risks of wastewater discharge in the steel industry are eliminated, while also saving new water consumption in the system.

[0050] Furthermore, the water supply pipeline also includes a recycled water pipeline 6. The water supply hole connecting the recycled water pipeline 6 to the circulating water tank 1 is located at a height of 2-3.5m. In steel production, recycled water is the core link in the recycling of water resources. It refers to the centralized treatment of industrial wastewater and domestic sewage (such as clean circulation, turbid circulation sewage, domestic sewage, etc.) within the factory area, which is reused as production water after meeting the standards, to achieve the purpose of reducing the consumption of new water in production. Through differentiated treatment, cascade reuse and intelligent management, the recycled water system in the steel industry can achieve the goals of water conservation, emission reduction and resource utilization, and improve water conservation efficiency.

[0051] Furthermore, the water supply pipeline also includes a clean circulating water pipeline 9. The height of the water supply hole connecting the clean circulating water pipeline 9 and the circulating water pool 1 is located at 1.5-2.5m. The purpose is to provide a production emergency measure to replenish water to the system in specific circumstances where there is insufficient water from other water sources.

[0052] This setup implements multi-level control over different water usage types based on water quality and environmental risks, thereby eliminating environmental risks and achieving efficient water conservation. Specifically, the height of the coking recycled water pipeline 3 is greater than the height of the slag drain pipeline 4, which is greater than the height of the brine pipeline 5, which is greater than the height of the recycled water pipeline 6, which is greater than the height of the clean circulating water pipeline 9.

[0053] Example 2:

[0054] The present invention also provides a multi-level water level control method with high efficiency and water saving, comprising the following steps:

[0055] S1. Determine the quality, environmental risks and water consumption requirements of low-quality water sources in the factory area;

[0056] S2. Determine the existing water volume in the circulating water pool 1;

[0057] S3. Calculate the difference between the water consumption and the water storage to obtain the final water level in the circulating water tank 1;

[0058] S4. According to the final water level in the circulating water tank 1, the water supply pipes above the final water level are opened in sequence, with the water supply pipe at the highest position being opened first;

[0059] S5. When the highest water supply line finishes replenishing water, and the water level in the circulating water pool 1 is lower than the water supply line at the second height, the water supply line at the second height is opened; otherwise, replenishment is stopped. When the second water supply line finishes replenishing water, and the water level in the circulating water pool 1 is lower than the water supply line at the third height, the water supply line at the third height is opened; otherwise, replenishment is stopped. The water supply lines at the remaining heights are opened in sequence in this cycle. The float valve 2 controls water use at different levels, replenishing the water supply to the safe water level in a timely manner, and ensuring the reliability of the external water supply of the circulating water pool 1. Therefore, the water supply line at a higher position can remain open. When the water level in the circulating water pool 1 is lower than the water supply hole of the water supply line at that location, water can be replenished. The water supply lines at a lower position, such as the clean circulating water line 9, can remain closed. When it is not necessary, water is not replenished through the clean circulating water line 9.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. Highly efficient and water-saving multi-level water level control pool, characterized by: It includes a circulating water pool and multiple water supply pipelines, wherein the side wall of the circulating water pool is provided with multiple water supply holes, and the height positions of the water supply holes from the bottom of the circulating water pool are different; The water supply pipelines are independently connected to the water supply holes, and a float valve is provided at the connection point, and the float valve is used to control the connection and blocking of the water supply pipeline; when the water level in the circulating water pool is lower than the height position of the corresponding water supply hole, the water supply pipeline connected to the water supply hole is connected and water is supplied to the circulating water pool; when the water level in the circulating water pool is higher than the height position of the corresponding water supply hole, the water supply pipeline connected to the water supply hole is blocked.

2. The efficient and water-saving multi-level water level control pool according to claim 1 is characterized by: The float valve comprises a valve body, a connecting water pipe and a float; The water inlet end of the valve body is connected to the water supply pipeline, and the water outlet end is connected to the connecting water pipe. The end of the connecting water pipe away from the valve body is located in the water supply hole; the float is rotatably connected to the connecting water pipe through a float handle to control the connection and blocking of the water supply pipeline.

3. The efficient and water-saving multi-level water level control pool according to claim 2 is characterized by: A water level sensor is also provided at the connection between the communicating water pipe and the float handle to display the water level in the circulating water pool in real time.

4. The efficient and water-saving multi-level water level control pool according to claim 2, characterized in that: The valve body is also provided with an opening and closing valve, which is used to control the communication and blocking between the connecting water pipe and the valve body.

5. The efficient and water-saving multi-level water level control pool according to any one of claims 1 to 4, characterized in that: The water supply pipeline includes a coking recycled water pipeline, and the water supply hole connecting the coking recycled water pipeline and the circulating water pool is located at a height of 3-6.6m.

6. The efficient and water-saving multi-level water level control pool according to claim 5, characterized in that: The water supply pipeline also includes a water slag drainage pipeline, and the water supply hole where the water slag drainage pipeline is connected to the circulating water pool is located at a height of 2.5-6m.

7. The efficient and water-saving multi-level water level control pool according to claim 6, characterized in that: The water supply pipeline also includes a concentrated brine pipeline, and the height of the water supply hole connecting the concentrated brine pipeline and the circulating water pool is located at 2.5-5m.

8. The efficient and water-saving multi-level water level control pool according to claim 7, characterized in that: The water supply pipeline also includes a recycled water pipeline, and the water supply hole where the recycled water pipeline is connected to the circulating water pool is located at a height of 2-3.5m.

9. The efficient and water-saving multi-level water level control pool according to claim 8, characterized in that: The water supply pipeline also includes a clean circulating water pipeline, and the height of the water supply hole connecting the clean circulating water pipeline and the circulating water pool is located at 1.5-2.5m.

10. An efficient and water-saving multi-level water level control method, characterized by: The following steps are involved: S1. Determine the quality, environmental risks and water consumption requirements of low-quality water sources in the factory area; S2. Determine the existing water volume in the circulating water pool; S3. Calculate the difference between water consumption and water storage to obtain the final water level in the circulating water pool; S4. Based on the final water level in the circulating water tank, during the process of discharging water, the water supply pipes that are higher than the final water level are opened in sequence, with the water supply pipe at the highest position being opened first; S5. When the water supply of the water supply pipeline at the highest position is completed, and the water level in the circulating water pool is lower than the water supply pipeline at the second height position, the water supply pipeline at the second height position is opened; otherwise, the water supply is stopped; and the water supply pipelines at the remaining height positions are opened in turn in this cycle.

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