Automatic water replenishing system of sodium hydroxide storage tank

Abstract

The utility model provides an automatic water replenishing system for a sodium hydroxide storage tank, which comprises a stirring bin, support legs are mounted at the top of the stirring bin, a support is connected onto the support legs, a weighing device is mounted on the support, a raw material conveying mechanism is arranged on the weighing device, a motor is mounted at the bottom of the stirring bin, and the motor is connected onto the support. The motor penetrates through the bottom of the stirring bin through a coupler to be connected with a stirring shaft, stirring blades are installed on the two sides of the stirring shaft, a water outlet pipe is installed on the side wall of the stirring bin, a water pump is installed on the water outlet pipe, the water outlet pipe is connected with a cooling mechanism, and the cooling mechanism is connected with a water return pipe. The water return pipe is connected to the side wall of the stirring bin, and the side wall of the stirring bin is further connected with a clear water inlet pipe, a water drainage pipe, a circulating water return pipe and a circulating water outlet pipe. By using the device, the concentration of the sodium hydroxide solution can be accurately prepared, the pH value of the sodium hydroxide solution can be monitored, and when the concentration is reduced to a certain degree, the solution is automatically replaced.

Description

Technical Field

[0001] This utility model relates to the field of solution preparation technology, and in particular to an automatic water replenishment system for sodium hydroxide storage tanks. Background Technology

[0002] During acetylene production, acidic substances (such as sulfuric acid and hydrochloric acid) may be generated, which can affect the purity and effectiveness of acetylene. Therefore, an appropriate amount of alkaline substance needs to be added for neutralization to improve the purity of acetylene. In acetylene production, a sodium hydroxide neutralization tower is commonly used to neutralize the acidic substances in the acetylene. However, the sodium hydroxide solution in the neutralization tower needs to be circulated and replaced in real time. Therefore, a sodium hydroxide solution needs to be prepared and circulated. Traditional sodium hydroxide preparation devices cannot automatically dispense and replenish water, cannot monitor pH values ​​in real time, and cannot dissipate heat in a timely manner during preparation. To address these issues, we provide an automatic water replenishment system for a sodium hydroxide storage tank. Utility Model Content

[0003] This invention provides an automatic water replenishment system for sodium hydroxide storage tanks, which solves the problems of traditional sodium hydroxide storage tanks being unable to automatically dispense and replenish water, unable to monitor pH value in real time, and unable to dissipate heat in a timely manner during configuration.

[0004] This utility model provides an automatic water replenishment system for a sodium hydroxide storage tank, including a stirring chamber. Support legs are mounted on the top of the stirring chamber, and brackets are connected to the support legs. A weighing device is mounted on the brackets, and a raw material conveying mechanism is mounted on the weighing device. A stirring motor is mounted at the bottom of the stirring chamber, and the stirring motor is connected to a stirring shaft via a coupling passing through the bottom of the stirring chamber. Stirring blades are mounted on both sides of the stirring shaft. A water outlet pipe is mounted on the side wall of the stirring chamber, and a water pump is mounted on the water outlet pipe. The water outlet pipe is connected to a cooling mechanism, and the cooling mechanism is connected to a return water pipe. The return water pipe is connected to the side wall of the stirring chamber. A clean water inlet pipe, a drain pipe, a circulating return water pipe, and a circulating outlet pipe are also connected to the side wall of the stirring chamber.

[0005] Preferably, the raw material conveying mechanism includes several support plates located on the weighing device, the support plates abutting against the weighing device, the support plates being installed on the side wall of the raw material silo, a cover plate being installed on the top of the raw material silo, a conveying device being installed at the bottom of the raw material silo, the conveying device being connected to a flexible hose, and the flexible hose being connected to the top of the mixing chamber.

[0006] Preferably, the cooling mechanism includes a cooling pipe connected to the water outlet pipe, several heat dissipation fins fixed on the cooling pipe, the heat dissipation fins being mounted on an outer frame, a heat dissipation device being installed on the inner side of the outer frame, and a heat dissipation grille being installed on the outer side of the outer frame.

[0007] Preferably, the conveying device includes a conveying gear housing connected to the bottom of the raw material silo. Two conveying gears are rotatably mounted on the inner side wall of the conveying gear housing. The two conveying gears mesh with each other. One end of one of the conveying gears is connected to a motor through a coupling passing through the side wall of the conveying gear housing. The motor is mounted on the side wall of the conveying gear housing. The conveying gear housing is connected to the hose.

[0008] Preferably, the heat dissipation device includes a radiator bracket connected to the outer casing, a motor mounting bracket connected to the radiator bracket, a cooling fan motor mounted on the motor mounting bracket, and a cooling fan mounted on the cooling fan motor.

[0009] Preferably, a pH meter is installed inside the mixing chamber.

[0010] Preferably, a flow valve is installed on the clean water inlet pipe.

[0011] Preferably, a temperature sensor is installed on the top of the mixing chamber.

[0012] Preferably, a pressure sensor and a pressure relief valve are installed on the top of the mixing chamber.

[0013] Preferably, the hose is a corrugated pipe.

[0014] As can be seen from the above technical solution, this utility model provides an automatic water replenishment system for sodium hydroxide storage tanks. In use, the required mass of sodium hydroxide and water is first calculated based on the concentration of the sodium hydroxide solution to be prepared. Then, the motor is started, driving the conveying gears to transport the sodium hydroxide powder. A support plate is installed on the side wall of the raw material silo, and a weighing device is installed under the support plate to weigh the transported sodium hydroxide powder. Simultaneously, a clean water inlet pipe begins to inject clean water into the mixing chamber. A flow valve is installed on the clean water inlet pipe to precisely control the water flow. In conjunction with the weighing device in the raw material silo, the sodium hydroxide solution can be prepared quantitatively and at a fixed concentration. While the solution is being prepared, the stirring motor is started, driving the stirring blades to rotate and stir the solution, helping the sodium hydroxide to dissolve fully and evenly in the water. Sodium hydroxide releases a large amount of heat during dissolution. A temperature sensor is installed above the mixing chamber to detect the temperature. When the set value is reached, the water pump starts, and the sodium hydroxide solution flows from the outlet pipe into the cooling pipe. The cooling fan starts to dissipate heat from the sodium hydroxide solution until the temperature sensed by the temperature sensor is lower than the preset value. Then, the water pump stops working, and the cooling fan is turned off. After the solution is prepared, the solution circulates in the neutralization tower through the circulating return pipe and the circulating outlet pipe. During circulation, the sodium hydroxide solution reacts with acidic substances in the neutralization tower, so the concentration of the sodium hydroxide solution gradually decreases. A pH meter is installed in the mixing chamber. When the pH value of the solution is detected to be lower than the minimum concentration required for circulation, the circulation of the sodium hydroxide solution is stopped, and the solution is discharged from the drain pipe. Then, a new round of solution preparation begins. The pressure inside the container may change during solution preparation. To prevent accidents, a pressure sensor and a pressure relief valve are also installed above the mixing chamber. When excessive pressure is sensed, the pressure relief valve activates to release pressure in the mixing chamber to ensure equipment safety.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Stirring the sodium hydroxide solution with a stirring blade can ensure a relatively stable concentration of the sodium hydroxide solution during preparation and circulation.

[0017] 2. By combining a weighing device, a conveying device, a flow valve, and a pH meter, a sodium hydroxide solution of a certain concentration can be prepared. The pH value can also be monitored in real time during the solution circulation process, and the solution can be replaced when the pH decreases to a certain level.

[0018] 3. By combining the heat dissipation device with the temperature sensor, heat can be dissipated during the preparation of sodium hydroxide solution to prevent overheating and damage to the equipment.

[0019] In summary, by using this application, the sodium hydroxide solution can be kept relatively stable during preparation and circulation by stirring, the concentration of the sodium hydroxide solution can be accurately prepared, the pH value of the sodium hydroxide solution can be monitored in real time, the solution can be automatically replaced when the concentration drops to a certain level, and heat dissipation treatment can be performed on the solution during the preparation process to prevent equipment damage. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic water replenishment system for a sodium hydroxide storage tank proposed in this utility model;

[0022] Figure 2 This is a cross-sectional view of the stirring chamber of an automatic water replenishment system for a sodium hydroxide storage tank according to this utility model.

[0023] Figure 3 This is a schematic diagram of the raw material conveying mechanism of an automatic water replenishment system for a sodium hydroxide storage tank proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the cooling mechanism of an automatic water replenishment system for a sodium hydroxide storage tank proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the heat dissipation device of an automatic water replenishment system for a sodium hydroxide storage tank proposed in this utility model;

[0026] Figure 6 This is a schematic diagram A of the conveying device of an automatic water replenishment system for sodium hydroxide storage tanks proposed in this utility model;

[0027] Figure 7 This is a schematic diagram (B) of the conveying device for an automatic water replenishment system for a sodium hydroxide storage tank proposed in this utility model.

[0028] In the diagram: 1. Mixing chamber, 2. Support leg, 3. Raw material silo, 4. Cover plate, 5. Support plate, 6. Weighing device, 7. Bracket, 8. Motor, 9. Hose, 10. Conveying gear, 11. Conveying gear housing, 12. Mixing blade, 13. Mixing shaft, 14. Mixing motor, 15. pH meter, 16. Heat sink, 17. Cooling pipe, 18. Outer frame, 19. Water outlet pipe, 20. Water return pipe, 21. Heat dissipation grille, 22. Water pump, 23. Radiator bracket, 24. Cooling fan, 25. Mixing chamber bracket, 26. Pressure sensor, 27. Temperature sensor, 28. Pressure relief valve, 29. Flow valve, 30. Clean water inlet pipe, 31. Drain pipe, 32. Circulating return water pipe, 33. Circulating outlet water pipe, 34. Cooling fan motor, 35. Motor mounting bracket. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0030] See Figure 1-7An automatic water replenishment system for sodium hydroxide storage tanks is disclosed, which can accurately prepare the concentration of sodium hydroxide solution, monitor the pH value of the sodium hydroxide solution in real time, and automatically replace the solution when the concentration drops to a certain level. Specifically, the system includes a mixing chamber 1, with support legs 2 mounted on top. A bracket 7 is connected to the support legs 2, and a weighing device 6 is mounted on the bracket 7. The weighing device 6 has a raw material conveying mechanism. A stirring motor 14 is mounted at the bottom of the mixing chamber 1, and the stirring motor 14 is connected to a stirring shaft 13 via a coupling passing through the bottom of the mixing chamber 1. Stirring blades 12 are mounted on both sides of the stirring shaft 13. During solution preparation, the stirring shaft drives the stirring blades to rotate, ensuring thorough dissolution. A pH meter 15 is also installed inside the mixing chamber 1 to monitor the pH value in real time. A water outlet pipe 19 is installed on the side wall of the mixing chamber 1, and a water pump 22 is mounted on the water outlet pipe 19. The water outlet pipe 19 is connected to a cooling mechanism, which is connected to a return water pipe 20. The return water pipe 20 is connected to the side wall of the mixing chamber 1. The water pump 22 controls the cooling state; once the sodium hydroxide is fully dissolved, the solution will no longer generate heat, at which point the water pump 22 stops working. To stop heat dissipation, the side wall of the mixing chamber 1 is also connected to a clean water inlet pipe 30, a drain pipe 31, a circulating return water pipe 32, and a circulating outlet water pipe 33. The clean water inlet pipe 30 provides clean water during the preparation of the sodium hydroxide solution, and a flow valve 29 is installed on the clean water inlet pipe 30 to precisely control the water inflow and thus precisely control the concentration of the sodium hydroxide solution. The drain pipe 31 discharges the sodium hydroxide solution from the mixing chamber 1. When the sodium hydroxide solution circulates a certain number of times, the concentration will gradually decrease. When the pH value is detected by the detector 15 to reach the predetermined value, the sodium hydroxide solution is discharged. The circulating return water pipe 32 is the return water pipe for the sodium hydroxide solution during circulation in the neutralization tower, and the sodium hydroxide outlet water pipe 33 is the outlet water pipe for the sodium hydroxide solution during circulation in the neutralization tower. This application can perform a series of automated operations such as preparation, circulation, cooling, and discharge of the sodium hydroxide solution, and can automatically reconfigure when the concentration of the sodium hydroxide solution is low.

[0031] In this utility model, the raw material conveying mechanism includes several support plates 5 located on the weighing device 6. The support plates 5 abut against the weighing device 6. The support plates 5 are installed on the side wall of the raw material silo 3. A cover plate 4 is installed on the top of the raw material silo 3. A conveying device is installed at the bottom of the raw material silo 3. The conveying device is connected to a flexible hose 9. The flexible hose 9 is connected to the top of the mixing chamber 1. In this application, the flexible hose 9 is a corrugated pipe. Corrugated pipes are inexpensive and have good ductility. In use, the raw material is first added to the raw material silo 3. The sodium hydroxide powder is then fed into the mixing chamber through the conveying device. When the powder is added, the weighing device 6 monitors the amount added to ensure accurate configuration.

[0032] In this utility model, the cooling mechanism includes a cooling pipe 17 connected to the water outlet pipe 19, several heat sinks 16 fixed on the cooling pipe 17, the heat sinks 16 are mounted on the outer frame 18, a heat dissipation device is installed on the inner side of the outer frame 18, and a heat dissipation grille 21 is installed on the outer side of the outer frame 18. The cooling pipe 17 passes through the heat sinks 16 in a serpentine shape, which can fully diffuse heat to the heat sinks 16, and then dissipate it through the heat dissipation device. The heat dissipation grille 21 increases the aesthetics and prevents the heat dissipation grille exposed on the outside from being contaminated by dust, while not affecting the heat dissipation efficiency.

[0033] In this invention, the conveying device includes a conveying gear housing 11 connected to the bottom of the raw material silo 3. Two conveying gears 10 are rotatably mounted on the inner side wall of the conveying gear housing 11. The two conveying gears 10 mesh with each other. One end of one of the conveying gears 10 is connected to a motor 8 through a coupling passing through the side wall of the conveying gear housing 11. The motor 8 is mounted on the side wall of the conveying gear housing 11. The conveying gear housing 11 is connected to a hose 9. When the conveying device is working, the motor 8 drives the two meshing conveying gears 10 to reverse, and the powder moves along the inner wall of the conveying gear housing 11 and finally falls into the mixing silo 1. This conveying method has a simple structure, is easy to control, and has a certain degree of enclosure, which can prevent the powder from falling out of the raw material silo when not being transported.

[0034] In this utility model, the heat dissipation device includes a radiator bracket 23 connected to the outer frame 18, a motor mounting bracket 35 connected to the radiator bracket 23, a cooling fan motor 34 mounted on the motor mounting bracket 35, a cooling fan 24 mounted on the cooling fan motor 34, and a temperature sensor 27 mounted on the top of the mixing chamber 1. When the temperature sensor 27 senses that the temperature has reached a predetermined value, the cooling motor 34 is turned on, and the cooling motor 34 drives the cooling fan 24 to rotate, so as to fully dissipate heat from the heat sink 16. When the temperature is lower than the predetermined value, the heat dissipation stops. The cooling motor 34 works in conjunction with the water pump 22. When the cooling motor 34 starts working, the water pump 22 is turned on, the cooling motor 34 stops working, and the water pump 22 is turned off.

[0035] In this invention, a pressure sensor 26 and a pressure relief valve 28 are installed on the top of the mixing chamber 1. When sodium hydroxide dissolves, it can easily cause changes in the pressure inside the container. When the pressure sensor 26 senses that the pressure has risen to a predetermined value, the pressure relief valve 28 is activated to release the excess pressure and ensure the safety of the equipment.

[0036] As can be seen from the above technical solution, during use, firstly, based on the required concentration of the sodium hydroxide solution, calculate the required mass of sodium hydroxide and water. Then, start motor 8, which drives conveying gear 10 to transport sodium hydroxide powder. A support plate 5 is installed on the side wall of raw material silo 3, and a weighing device 6 is installed under the support plate 5 to weigh the transported sodium hydroxide powder. Simultaneously, clean water inlet pipe 30 begins to inject clean water into stirring chamber 1. A flow valve 29 is installed on the clean water inlet pipe 30, which can precisely control the water flow. In conjunction with the weighing device 6 in the raw material silo, the sodium hydroxide solution can be prepared quantitatively and at a fixed concentration. While preparing the solution, stirring motor 14 starts, driving stirring blade 12 to rotate and stir the solution, helping the sodium hydroxide to dissolve fully and evenly in the water. Sodium hydroxide releases a large amount of heat during dissolution. A temperature sensor 27 is installed above stirring chamber 1. When the temperature sensor 27 detects a temperature rise above a set value, water pump 22 starts. Sodium hydroxide solution flows from outlet pipe 20 into cooling pipe 17. Cooling fan 24 starts to dissipate heat from the sodium hydroxide solution until the temperature sensed by temperature sensor 27 is lower than the predetermined value. At this point, water pump 22 stops working and cooling fan 24 is turned off. After the solution is prepared, it circulates in the neutralization tower through circulation return pipe 32 and circulation outlet pipe 33. During circulation, the sodium hydroxide solution reacts with acidic substances in the neutralization tower, so the concentration of sodium hydroxide solution gradually decreases. A pH meter is installed in the stirring chamber. When the pH value of the solution is detected to be lower than the minimum concentration required for circulation, the circulation of sodium hydroxide solution is stopped, and the solution is discharged from drain pipe 31. Then, a new round of solution preparation begins. The pressure inside the container may change during solution preparation. To avoid accidents, a pressure sensor 26 and a pressure relief valve 28 are installed above the stirring chamber 1. When excessive pressure is sensed, the pressure relief valve 26 activates to release pressure from the stirring chamber 1 to ensure equipment safety.

[0037] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0038] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A kind of automatic water replenishing system of sodium hydroxide storage tank, including stirring bin (1), it is characterized by: The top of the mixing chamber (1) is equipped with a support leg (2), and a bracket (7) is connected to the support leg (2). A weighing device (6) is installed on the bracket (7), and a raw material conveying mechanism is on the weighing device (6). A stirring motor (14) is installed at the bottom of the mixing chamber (1). The stirring motor (14) passes through the bottom of the mixing chamber (1) and is connected to a stirring shaft (13) via a coupling. Stirring blades (12) are installed on both sides of the stirring shaft (13). A water outlet pipe (19) is installed on the side wall of the mixing chamber (1). A water pump (22) is installed on the water outlet pipe (19). A cooling mechanism is connected to the water outlet pipe (19). A return water pipe (20) is connected to the cooling mechanism. The return water pipe (20) is connected to the side wall of the mixing chamber (1). A clean water inlet pipe (30), a drain pipe (31), a circulating return water pipe (32), and a circulating outlet pipe (33) are also connected to the side wall of the mixing chamber (1). The raw material conveying mechanism includes several support plates (5) located on the weighing device (6), the support plates (5) abutting against the weighing device (6), the support plates (5) being installed on the side wall of the raw material silo (3), the top of the raw material silo (3) being fitted with a cover plate (4), the bottom of the raw material silo (3) being fitted with a conveying device, the conveying device being connected to a hose (9), and the hose (9) being connected to the top of the mixing chamber (1); The cooling mechanism includes a cooling pipe (17) connected to the water outlet pipe (19), a number of heat sinks (16) are fixed on the cooling pipe (17), the heat sinks (16) are installed on the outer frame (18), a heat dissipation device is installed on the inner side of the outer frame (18), and a heat dissipation grille (21) is installed on the outer side of the outer frame (18).

2. The automatic water replenishing system for sodium hydroxide storage tank according to claim 1, characterized in that: The conveying device includes a conveying gear housing (11) connected to the bottom of the raw material silo (3). Two conveying gears (10) are rotatably mounted on the side wall inside the conveying gear housing (11). The two conveying gears (10) mesh with each other. One end of one of the conveying gears (10) is connected to a motor (8) through a coupling through the side wall of the conveying gear housing (11). The motor (8) is mounted on the side wall of the conveying gear housing (11). The conveying gear housing (11) is connected to the hose (9).

3. The automatic water replenishment system for a sodium hydroxide storage tank according to claim 1, characterized in that: The heat dissipation device includes a radiator bracket (23) connected to the outer frame (18), a motor mounting bracket (35) connected to the radiator bracket (23), a cooling fan motor (34) mounted on the motor mounting bracket (35), and a cooling fan (24) mounted on the cooling fan motor (34).

4. The automatic water replenishing system for sodium hydroxide storage tank according to claim 1, characterized in that: A pH meter (15) is installed inside the mixing chamber (1).

5. The automatic water replenishing system for sodium hydroxide storage tank according to claim 1, characterized in that: A flow valve (29) is installed on the clean water inlet pipe (30).

6. The automatic water replenishing system for sodium hydroxide storage tank according to claim 1, characterized in that: A temperature sensor (27) is installed on the top of the mixing chamber (1).

7. The automatic water replenishment system for a sodium hydroxide storage tank according to claim 1, characterized in that: A pressure sensor (26) and a pressure relief valve (28) are installed on the top of the mixing chamber (1).

8. The automatic water replenishing system for sodium hydroxide storage tank according to claim 1, characterized in that: The hose (9) is a corrugated pipe.

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