Water quality adjusting system for sintered pellet production water

Abstract

The utility model discloses a sintered pellet production water quality regulating system, which comprises a regulating tank and a purifying tank, the inside of the regulating tank is divided into a regulating chamber and a sewage storage chamber by a transverse plate, a cylindrical filter screen is coaxially arranged in the regulating chamber, and the top of the regulating tank is provided with a water inlet pipe, a PH regulator adding port, a motor and a water replenishing pipe. A rotating shaft is coaxially arranged in the cylindrical filter screen, a plurality of stirring blades are arranged on the rotating shaft, a spiral coil pipe is arranged at the bottom of an annular area between the cylindrical filter screen and the adjusting tank, a plurality of air outlet holes are evenly formed in the spiral coil pipe, an exhaust pipe is arranged on the upper portion of the side wall of the adjusting chamber, and an air inlet pipe is arranged on the lower portion of the side wall of the adjusting chamber; the end of the air inlet pipe extends into the adjusting chamber to be communicated with an inlet of the spiral coil, the bottom of the adjusting chamber is communicated with the bottom of the purification tank through a drainage pipe, and an activated carbon layer is arranged in the purification tank above the drainage pipe. In conclusion, the device has the advantages that impurities can be effectively removed, the oxygen content can be reduced, and the adjusting effect is good.

Description

Technical Field

[0001] This utility model relates to the field of water quality regulation technology, specifically to a water quality regulation system for sintering pellet production. Background Technology

[0002] In traditional sintering and pelletizing processes, most of the process water is circulating cooling water for equipment. As industrial water is recycled, its quality gradually declines. In addition, if the quality of external water is poor, it will also lead to a decline in the water quality within the system. When the water quality deteriorates, it will cause problems such as scaling, corrosion, and blockage in pipes and equipment. If these problems are not addressed in the long term, they will eventually affect the cooling effect of the equipment and even lead to equipment damage.

[0003] Current water quality control systems for sintering and pelletizing production suffer from the following problems: First, their structure is simplistic, only capable of adjusting pH levels with low efficiency. They also fail to effectively remove impurities from the water, resulting in limited effectiveness. These impurities easily deposit in cooling equipment, reducing cooling efficiency, causing blockages, and shortening equipment lifespan. Second, during circulation, the cooling water undergoes cooling in the cooling tower, leading to increased contact with air and higher dissolved oxygen levels. This increased corrosiveness accelerates equipment corrosion. Therefore, developing a water quality control system for sintering and pelletizing production that effectively removes impurities, reduces oxygen content, and provides superior control is essential. Utility Model Content

[0004] The purpose of this invention is to provide a water quality adjustment system for sintering pellet production water that can effectively remove impurities, reduce oxygen content, and has a good adjustment effect.

[0005] The purpose of this utility model is achieved as follows: It includes an adjusting tank and a purification tank. The interior of the adjusting tank is divided into an adjusting chamber and a sludge storage chamber by a horizontal plate. A cylindrical filter screen is coaxially arranged inside the adjusting chamber, with its lower end connected to the sludge storage chamber. The top of the adjusting tank is equipped with a water inlet pipe, a pH adjuster inlet, a motor, and a water supply pipe. The water inlet pipe and the pH adjuster inlet are located above the cylindrical filter screen. A rotating shaft is coaxially arranged inside the cylindrical filter screen, with its upper end connected to the motor drive. Several stirring blades are arranged on the rotating shaft. A spiral coil is arranged at the bottom of the annular area between the cylindrical filter screen and the adjusting tank, with several air outlets evenly machined on the spiral coil. An exhaust pipe is arranged at the upper part of the side wall of the adjusting chamber, and an air inlet pipe is arranged at the lower part. The end of the air inlet pipe extends into the adjusting chamber and connects to the inlet of the spiral coil. The bottom of the adjusting chamber is connected to the bottom of the purification tank via a drain pipe. An activated carbon layer is arranged inside the purification tank above the drain pipe, and a water outlet pipe is arranged at the top of the purification tank.

[0006] Furthermore, several cathode plates and anode plates are arranged in combination inside the purification tank above the activated carbon layer.

[0007] Furthermore, the exhaust direction of the air outlet on the spiral coil is towards the bottom of the regulating chamber.

[0008] Furthermore, a filter screen is installed inside the purification tank between the drain pipe and the activated carbon layer. The mesh diameter of the filter screen is smaller than that of the cylindrical filter screen.

[0009] Furthermore, a water storage tank is connected to the outlet pipe, and an oxygen dissolved content detection sensor is installed inside the water storage tank. The water storage tank is equipped with a return pipe and a direct discharge pipe, and the end of the return pipe is connected to the water supply pipe.

[0010] Furthermore, a vertical shaft is connected to the rotating shaft above the cylindrical filter screen via a horizontal bar. The vertical shaft is located in the annular area between the cylindrical filter screen and the regulating tank, and an agitator is installed on the vertical shaft.

[0011] Furthermore, a brush is vertically installed at the end of the stirring blade, and the brush surface contacts the inner wall of the cylindrical filter screen.

[0012] Furthermore, a baffle plate with a convex upper part and a concave lower edge is installed in the sludge storage chamber below the cylindrical filter screen.

[0013] In operation, the sintering pellet production water is introduced into the cylindrical filter screen of the regulating tank through the inlet pipe. Simultaneously, an appropriate amount of pH adjuster is added to the cylindrical filter screen through the pH adjuster addition port. The motor is started, driving the rotating shaft and stirring blades to rotate, creating a swirling flow of the production water. This promotes the mixing of the pH adjuster with the production water, rapidly adjusting the pH value and accelerating the flow of the production water through the cylindrical filter screen, thus improving filtration efficiency. At this point, particulate impurities in the production water are trapped by the cylindrical filter screen and gradually fall into the sludge storage chamber. The filtered production water... Water passes through a cylindrical filter screen. In the annular area between the filter screen and the regulating tank, nitrogen gas is introduced into the spiral coil through the air inlet pipe. The nitrogen gas is sprayed into the production water, forming tiny bubbles that rise continuously. This process both displaces oxygen from the production water and removes heat, thereby reducing the oxygen content and temperature. After treatment in the regulating tank, the production water enters the purification tank through the drain pipe. There, activated carbon in the activated carbon layer further adsorbs oxygen, impurities, and odors from the production water, further purifying it and improving its quality. In this invention, rotating stirring blades agitate the production water and pH adjuster within the cylindrical filter screen. This rapidly adjusts the pH value of the production water and utilizes the centrifugal force generated during the rotation to accelerate the filtration of impurities, quickly separating them from the water. Finally, activated carbon is used to purify the water, removing oxygen, impurities, and odors, improving water quality. The impurity removal and water quality regulation are effective, preventing impurities from depositing and clogging the cooling equipment, ensuring cooling efficiency and extending equipment lifespan. Furthermore, this invention employs a displacement method, using nitrogen to displace oxygen from the water, significantly reducing oxygen content and preventing increased corrosiveness, thus extending equipment lifespan. In summary, this invention effectively removes impurities, reduces oxygen content, and provides excellent water quality regulation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] In the diagram: 1-Regulating tank, 2-Purification tank, 3-Horizontal plate, 4-Regulating chamber, 5-Sludge storage chamber, 6-Cylindrical filter screen, 7-Water supply pipe, 8-Rotating shaft, 9-Agitator blade, 10-Spiral coil, 11-Air inlet pipe, 12-Drainage pipe, 13-Activated carbon layer, 14-Water outlet pipe, 15-Cathode plate, 16-Anode plate, 17-Filter screen, 18-Water storage tank, 19-Oxygen dissolved oxygen detection sensor, 20-Return pipe, 21-Vertical shaft, 22-Agitator rod, 23-Brush, 24-Anti-interference plate. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.

[0017] like Figure 1 As shown, this utility model includes an adjusting tank 1 and a purification tank 2. The interior of the adjusting tank 1 is divided into an adjusting chamber 4 and a sludge storage chamber 5 by a horizontal plate 3. A cylindrical filter screen 6 is coaxially arranged in the adjusting chamber 4, and the lower end of the cylindrical filter screen 6 is connected to the sludge storage chamber 5. The top of the adjusting tank 1 is provided with a water inlet pipe, a pH adjuster addition port, a motor, and a water supply pipe 7. The water inlet pipe and the pH adjuster addition port are located above the cylindrical filter screen 6. A rotating shaft 8 is coaxially arranged inside the cylindrical filter screen 6, and the upper end of the rotating shaft 8 is connected to the motor drive. Several [unclear - possibly referring to a specific type of device] are provided on the rotating shaft 8. A spiral coil 10 is provided at the bottom of the annular area between the stirring blade 9, the cylindrical filter screen 6, and the regulating tank 1. Several air outlet holes are uniformly machined on the spiral coil 10. An exhaust pipe is provided at the upper part of the side wall of the regulating chamber 4, and an air inlet pipe 11 is provided at the lower part. The end of the air inlet pipe 11 extends into the regulating chamber 4 and is connected to the inlet of the spiral coil 10. The bottom of the regulating chamber 4 is connected to the bottom of the purification tank 2 through a drain pipe 12. An activated carbon layer 13 is provided in the purification tank 2 above the drain pipe 12, and a water outlet pipe 14 is provided at the top of the purification tank 2.

[0018] In operation, the sintering pellet production water is introduced into the cylindrical filter screen 6 of the regulating tank 1 through the inlet pipe. Simultaneously, an appropriate amount of pH adjuster is added to the cylindrical filter screen 6 through the pH adjuster addition port. The motor is started, and it sequentially drives the rotating shaft 8 and the stirring blade 9 to rotate, causing the production water to be in a swirling state. This promotes the mixing of the pH adjuster with the production water, quickly adjusts the pH value of the production water, and accelerates the speed at which the production water passes through the cylindrical filter screen 6, improving filtration efficiency. At this time, particulate impurities in the production water are trapped by the cylindrical filter screen 6 and gradually fall into the sludge storage chamber 5, while the filtered production water passes through... The cylindrical filter 6 is located in the annular area between the cylindrical filter 6 and the regulating tank 1. Nitrogen gas is introduced into the spiral coil 10 through the air inlet pipe 11. The nitrogen gas is sprayed into the production water, forming fine bubbles that rise continuously. On the one hand, it displaces the oxygen in the production water, and on the other hand, it removes the heat from the production water, thereby reducing the oxygen content and temperature of the production water. After the production water is treated in the regulating tank 1, it enters the purification tank 2 through the drain pipe 12. The activated carbon in the activated carbon layer 13 adsorbs oxygen, impurities, odors, etc. in the production water again, further purifying the production water and improving its quality.

[0019] In this invention, rotating stirring blades 9 agitate the production water and pH adjuster within the cylindrical filter screen 6. This not only rapidly adjusts the pH value of the production water but also utilizes the centrifugal force generated during the rotation of the production water to accelerate the filtration efficiency of impurities in the water, quickly separating them. Finally, activated carbon is used to purify the water by removing oxygen, impurities, and odors, improving water quality. The impurity removal effect is good, and the water quality adjustment effect is also good, thus preventing the deposition and clogging of impurities in the cooling equipment, ensuring the cooling effect of the cooling water and the service life of the equipment. In addition, this invention uses a displacement method, employing nitrogen to displace oxygen from the water, significantly reducing the oxygen content in the water, preventing increased water corrosivity, avoiding water corrosion of the equipment, and extending the service life of the equipment.

[0020] The purification tank 2 above the activated carbon layer 13 is equipped with several cathode plates 15 and anode plates 16 arranged in a coordinated manner. The structure and installation of the cathode plates 15 and anode plates 16 are existing technologies. The cathode plates 15 and anode plates 16 work together to purify water, reduce water hardness, improve water quality, and effectively inhibit water corrosion of pipes and equipment.

[0021] During use, it was found that small particulate impurities would accumulate at the bottom of the regulating chamber 4 below the spiral coil 10, and these impurities would continue to settle and accumulate, eventually burying the spiral coil 10 and affecting the normal operation of the system. To solve this problem, the air outlet of the spiral coil 10 is directed towards the bottom of the regulating chamber 4. When nitrogen is sprayed out, it can agitate the impurities at the bottom of the regulating chamber 4, prevent the impurities from settling, and ensure the normal operation of the system. At the same time, when nitrogen is sprayed to the bottom of the regulating chamber 4, it can also make the bubbles smaller and more numerous through impact, which is beneficial to improving the efficiency of nitrogen in replacing oxygen in the water.

[0022] A filter screen 17 is installed inside the purification tank 2 between the drain pipe 12 and the activated carbon layer 13. The mesh diameter of the filter screen 17 is smaller than that of the cylindrical filter screen 6. During actual operation, it was found that when the water is discharged from the drain pipe 12, it still contains a lot of impurities, which reduces the service life of the activated carbon layer 13. In order to solve this problem, the filter screen 17 is installed to filter the water again, filter out the smaller particulate impurities, improve the water quality, and at the same time reduce the adsorption pressure of the activated carbon layer 13, thus extending the service life of the activated carbon layer 13.

[0023] A water storage tank 18 is connected to the outlet pipe 14. An oxygen dissolved oxygen detection sensor 19 is installed inside the water storage tank 18. A return pipe 20 and a straight discharge pipe are installed on the water storage tank 18. The end of the return pipe 20 is connected to the water supply pipe 7. The oxygen dissolved oxygen detection sensor 19 is an existing detection instrument used to detect the oxygen content in the water. When the oxygen content drops to a certain level, the water in the water storage tank 18 is discharged through the straight discharge pipe for recycling. When the oxygen content is still high, it can be returned to the regulating tank 1 through the return pipe 20 for water quality adjustment again to reduce the oxygen content of the water until the oxygen content meets the adjustment requirements.

[0024] A vertical shaft 21 is connected to the rotating shaft 8 above the cylindrical filter screen 6 via a horizontal bar. The vertical shaft 21 is located in the annular area between the cylindrical filter screen 6 and the regulating tank 1. An agitator 22 is installed on the vertical shaft 21. When the rotating shaft 8 rotates, it drives the vertical shaft 21 and the agitator 22 to rotate through the horizontal bar, thereby agitating the water in the annular area between the cylindrical filter screen 6 and the regulating tank 1. At the same time, it breaks up the nitrogen bubbles in the water, resulting in more and smaller nitrogen bubbles. This increases the contact time between the nitrogen bubbles and the water, improves the efficiency of nitrogen integration into the water, improves the replacement efficiency, and squeezes out the oxygen in the water more quickly, thereby reducing the oxygen content in the water.

[0025] A brush 23 is vertically installed at the end of the stirring blade 9. The brush surface of the brush 23 contacts the inner wall of the cylindrical filter screen 6. The cylindrical filter screen 6 is used to filter impurities in the water. As the system runs for a long time, a large amount of impurities and dirt will adhere to the cylindrical filter screen 6, reducing the effective filtration area of ​​the production water and reducing the filtration efficiency of the production water. Therefore, the brush 23 is installed to clean the cylindrical filter screen 6 in real time and keep the cylindrical filter screen 6 clean.

[0026] Water used in sintering and pelletizing production enters the cylindrical filter screen 6. Particulate impurities in the water are trapped by the cylindrical filter screen 6 and fall into the sludge storage chamber 5, continuously settling to the bottom of the sludge storage chamber 5. However, the water inside the cylindrical filter screen 6 is in a rotating state under the action of the stirring blades 9. This state may stir up the impurities settled at the bottom of the sludge storage chamber 5, affecting the filtration of the production water. To prevent this, a baffle plate 24 with a convex upper part and a concave lower edge is installed in the sludge storage chamber 5 below the cylindrical filter screen 6. The baffle plate 24 is designed with a convex upper part and a concave lower edge, which facilitates the falling of particulate impurities along the baffle plate 24 and prevents particulate impurities from accumulating on the baffle plate 24. At the same time, it also reduces the impact of the flowing water inside the cylindrical filter screen 6 on the impurities deposited in the sludge storage chamber 5, avoids the deposited impurities being stirred up, and keeps the deposited impurities in a static state as much as possible.

Claims

1. A water quality conditioning system for sintering pellet production, comprising a conditioning tank (1) and a purification tank (2), characterized in that... The interior of the regulating tank (1) is divided into a regulating chamber (4) and a sludge storage chamber (5) by a horizontal plate (3). A cylindrical filter screen (6) is coaxially arranged in the regulating chamber (4), and the lower end of the cylindrical filter screen (6) is connected to the sludge storage chamber (5). The top of the regulating tank (1) is provided with a water inlet pipe, a pH adjuster addition port, a motor, and a water supply pipe (7). The water inlet pipe and the pH adjuster addition port are located above the cylindrical filter screen (6). A rotating shaft (8) is coaxially arranged inside the cylindrical filter screen (6). The upper end of the rotating shaft (8) is connected to the motor drive. Several stirring blades (9) are provided on the rotating shaft (8). 6) A spiral coil (10) is provided at the bottom of the annular area between the regulating tank (1) and the regulating tank (1). Several air outlet holes are uniformly machined on the spiral coil (10). An exhaust pipe is provided at the upper part of the side wall of the regulating chamber (4), and an air inlet pipe (11) is provided at the lower part. The end of the air inlet pipe (11) extends into the regulating chamber (4) and is connected to the inlet of the spiral coil (10). The bottom of the regulating chamber (4) is connected to the bottom of the purification tank (2) through a drain pipe (12). An activated carbon layer (13) is provided in the purification tank (2) above the drain pipe (12). A water outlet pipe (14) is provided at the top of the purification tank (2).

2. The water quality adjustment system for sintering pellet production water according to claim 1, characterized in that... The purification tank (2) above the activated carbon layer (13) is provided with several cathode plates (15) and anode plates (16) arranged in a coordinated manner.

3. The water quality adjustment system for sintering pellet production water according to claim 1, characterized in that... The air outlet of the spiral coil (10) is directed toward the bottom of the regulating chamber (4).

4. A water quality adjustment system for sintering pellet production water according to claim 1, characterized in that... A filter screen (17) is installed in the purification tank (2) between the drain pipe (12) and the activated carbon layer (13). The mesh diameter of the filter screen (17) is smaller than that of the cylindrical filter screen (6).

5. A water quality adjustment system for sintering pellet production water according to claim 1, characterized in that... The outlet pipe (14) is connected to a water storage tank (18), and an oxygen dissolved content detection sensor (19) is installed inside the water storage tank (18). The water storage tank (18) is equipped with a return pipe (20) and a straight discharge pipe. The end of the return pipe (20) is connected to the water supply pipe (7).

6. A water quality adjustment system for sintering pellet production water according to claim 1, characterized in that... A vertical shaft (21) is connected to the rotating shaft (8) above the cylindrical filter (6) by a horizontal bar. The vertical shaft (21) is located in the annular area between the cylindrical filter (6) and the regulating tank (1). A stirring rod (22) is provided on the vertical shaft (21).

7. A water quality adjustment system for sintering pellet production water according to claim 1, characterized in that... The end of the stirring blade (9) is vertically provided with a brush (23), and the brush surface of the brush (23) is in contact with the inner wall of the cylindrical filter screen (6).

8. A water quality adjustment system for sintering pellet production water according to claim 1, characterized in that... The sludge storage chamber (5) below the cylindrical filter screen (6) is equipped with a convex upper edge and a concave lower edge anti-disturbance plate (24).

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