Sealing, water replenishing and pressurizing system for stirring machine of reaction kettle

Abstract

The utility model belongs to the technical field of a hydrometallurgy pressure leaching process, and particularly discloses a sealing and water replenishing pressurization system for a stirring machine of a reaction kettle, which comprises a water pump room, a sealing system and the reaction kettle, and the water pump room is connected with a cooling water inlet header pipe and a cooling water outlet header pipe. The sealing system is connected with a sealing liquid outlet header pipe and a sealing liquid inlet header pipe, the cooling water inlet header pipe, the cooling water outlet header pipe, the sealing liquid outlet header pipe and the sealing liquid inlet header pipe are connected with the three reaction kettles through branch pipelines, five stirring machine seals are arranged in the reaction kettles, branch adjusting valves are arranged on the branch pipelines, and the stirring machine seals are connected with the three reaction kettles through the branch adjusting valves. The sealing system comprises a water supplementing system and a pressurizing system; the service life of the stirrer seal can be prolonged, the sealing performance of equipment is ensured, the using field of the equipment is reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the pressure leaching process technical field of hydrometallurgy, specifically relates to a reaction kettle agitator seal water supplement pressurization system. BACKGROUND

[0002] The mechanical seal is the guarantee of the normal operation of the stirring device under the force state in the kettle, due to the industrial pure oxygen being introduced into the reaction kettle, heat is generated due to the friction between the moving ring and the static ring during work, the heat cannot be effectively dissipated, and the mechanical seal will be worn, therefore, in order to ensure the safe and stable operation of the reaction kettle, cooling is required. The prior art production adopts one sealing water tank to control five agitator seals, single control operation is required during operation, the number of mechanical seal water tanks is large, the occupation is large, the operation is complicated, and the operation process requires operation of each tank, and the cooling mode is jacket cooling, the temperature drops slowly, and the cooling effect is poor; due to the site constraints, fresh water is used for sealing water, and the fresh water contains a large amount of insoluble impurities, during long-term operation, the sealing water tank and the pipeline form different degrees of scaling phenomenon, regular cleaning is required, and manual water supplement or water change operation is simultaneously performed, the operation is complicated and time-consuming, and the use effect of the mechanical seal is affected.

[0003] Therefore, it is necessary to design a reaction kettle agitator seal water supplement pressurization system, which can prolong the service life of the agitator seal, ensure the sealing performance of the equipment, reduce the use site of the equipment, and improve the operation efficiency. UTILITY MODEL CONTENTS

[0004] In view of the problems of the prior art, the utility model aims to provide a reaction kettle agitator seal water supplement pressurization system to solve the problems of large occupation, complicated operation and low operation efficiency of the existing equipment.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A reaction kettle agitator seal water supplement pressurization system, comprising a water pump house, a sealing system and a reaction kettle, the water pump house is connected with a cooling water inlet main pipe and a cooling water outlet main pipe, the sealing system is connected with a sealing liquid outlet main pipe and a sealing liquid inlet main pipe, the cooling water inlet main pipe, the cooling water outlet main pipe, the sealing liquid outlet main pipe and the sealing liquid inlet main pipe are connected with three reaction kettles through branch pipelines, five agitator seals are arranged in the reaction kettle, branch regulating valves are arranged on the branch pipelines, and a water supplement system and a pressurization system are arranged in the sealing system.

[0007] More preferably, the water replenishment system includes a sealed water tank, the sealed water tank is connected to a plate heat exchanger, the plate heat exchanger is connected to the cooling water inlet main pipe, the cooling water outlet main pipe and the sealing liquid outlet main pipe, a safety valve is provided on the top of the sealed water tank, a liquid level gauge and a pressure sensor are provided on the side of the sealed water tank, an emptying valve is provided at the bottom of the sealed water tank, the liquid inlet at the bottom of the sealed water tank is connected to a water replenishment pipe, a water replenishment valve is provided on the water replenishment pipe, the other end of the water replenishment pipe is connected to a water replenishment pump, the other end of the water replenishment pump is connected to a pure water tank, the liquid outlet at the bottom of the sealed water tank is connected to a sealing liquid circulation pump, and the other end of the sealing liquid circulation pump is connected to the sealing liquid inlet main pipe.

[0008] More preferably, the boosting system includes a sealed water tank, the sealed water tank is connected to a nitrogen input pipe, the nitrogen input pipe is provided with a pressure regulating valve, the other end of the nitrogen input pipe is respectively connected to a nitrogen bottle and an exhaust valve, the other end of the nitrogen bottle is connected to a nitrogen boosting system discharge pipeline, and the other end of the nitrogen boosting system discharge pipeline is connected to a nitrogen compressor.

[0009] More preferably, the water pump room and the sealing system are connected via a cooling water inlet main pipe and a cooling water outlet main pipe.

[0010] More preferably, the water pump room, water replenishment system and boosting system are controlled by a PLC system.

[0011] More preferably, the water supply pump and the sealing liquid circulation pump are lightweight vertical multi-stage pumps.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model uses one sealing water tank to control 15 mixer seals, reducing the equipment footprint; the connection to the water pump room allows cooling water to lower the temperature of the mixer bearing; the connection to the sealing system allows the sealing water to form a water film in the gap between the shaft and the seal to lubricate and prevent the medium from leaking through the gap, ensuring the equipment's sealing performance while extending the service life of the mixer seal; the control of the PLC system enables the utility model to be automated, reducing manual water replenishment and pressurization, and improving operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Fig. 1 This is the overall process flow chart of the utility model;

[0015] Fig. 2 This is the process flow chart of the water replenishment system of the utility model;

[0016] Fig. 3 This is a process flow chart of the boosting system of the utility model;

[0017] The meanings of the accompanying figures are as follows: 1. Cooling water inlet main pipe; 2. Cooling water outlet main pipe; 3. Sealing liquid outlet main pipe; 4. Sealing liquid inlet main pipe; 5. Reactor; 6. Plate heat exchanger; 7. Sealing water tank; 8. Pure water tank; 9. Water supply pump; 10. Drain valve; 11. Sealing liquid circulation pump; 12. Safety valve; 13. Pressure regulating valve; 14. Nitrogen bottle; 15. Nitrogen compressor; 16. Exhaust valve; 17. Branch regulating valve; 18. Pump room; 19. Sealing system; 20. Water supply valve; 21. Nitrogen boosting system discharge pipeline; 22. Water supply pipe; 23. Nitrogen input pipe; 24. Branch pipeline; 25. Liquid level gauge; 26. Pressure sensor; 27. Mixer seal; 28. Water supply system; 29. ​​Booster system. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] like Figs. 1-3 As shown, a reactor mixer seal water replenishment and boosting system includes a water pump room 18, a sealing system 19 and a reactor 5. The water pump room 18 is connected to a cooling water inlet main pipe 1 and a cooling water outlet main pipe 2. The sealing system 19 is connected to a sealing liquid outlet main pipe 3 and a sealing liquid inlet main pipe 4. The cooling water inlet main pipe 1, the cooling water outlet main pipe 2, the sealing liquid outlet main pipe 3 and the sealing liquid inlet main pipe 4 are connected to three reactors 5 through branch pipes 24. Five mixer seals 27 are provided in the reactor 5. A branch regulating valve 17 is provided on the branch pipe 24 to adjust the flow rate of liquid entering the mixer seal 27 from each branch pipe 24. A water replenishment system 28 and a pressure boosting system 29 are provided in the sealing system 19. The water pump room 18, the water replenishment system 28 and the pressure boosting system 29 are controlled by the PLC system. A liquid level gauge 25 is provided on the sealed water tank to detect the water level in the sealed water tank 7. When the liquid level in the sealed water tank 7 is low, the water replenishment can be automatically controlled to ensure the liquid level in the sealed water tank 7; when the sealing water pressure is insufficient, the PLC judges and turns on the nitrogen compressor 15 to replenish the pressure in the sealed water tank 7 to ensure the pressure and water level balance.

[0021] The water supplement system 28 comprises a sealed water tank 7, the sealed water tank 7 is connected with a plate heat exchanger 6, the plate heat exchanger 6 is connected with a cooling water inlet main pipe 1, a cooling water outlet main pipe 2 and a sealing liquid outlet main pipe 3, a safety valve 12 is arranged at the top of the sealed water tank 7, when the automatic system fails, the system will open the safety valve 12 when manually operating pressure compensation exceeds the set value; a liquid level meter 25 and a pressure sensor 26 are arranged at the side of the sealed water tank 7, the liquid level meter 25 is used for monitoring the water level in the sealed water tank 7, and the pressure sensor 26 is used for monitoring the pressure in the sealed water tank 7; a drain valve 10 is arranged at the bottom of the sealed water tank 7, and pure water is drained through the drain valve 10 during maintenance; a water supplement pipe 22 is connected with the liquid inlet at the bottom of the sealed water tank 7, a water supplement valve 20 is arranged on the water supplement pipe 22, the other end of the water supplement pipe 22 is connected with a water supplement pump 9, the other end of the water supplement pump 9 is connected with a pure water tank 8, the sealed water is circulated by using pure water, and the pure water is sourced from the pure water tank 8; the liquid outlet at the bottom of the sealed water tank 7 is connected with a sealing liquid circulating pump 11, the water supplement pump 9 and the sealing liquid circulating pump 11 are light vertical multi-stage pumps, the light vertical multi-stage pumps are stable in operation, low in noise, small in land occupation, can transport hot water, and are convenient for adjusting flow and pressure, and the other end of the sealing liquid circulating pump 11 is connected with a sealing liquid inlet main pipe 4, and the sealing liquid is input into the reaction kettle 5.

[0022] The pressure boosting system 29 comprises the sealed water tank 7, the sealed water tank 7 is connected with a nitrogen gas input pipe 23, a pressure regulating valve 13 is arranged on the nitrogen gas input pipe 23, the other end of the nitrogen gas input pipe 23 is connected with a nitrogen gas cylinder 14 and an exhaust valve 16 respectively, the pressure in the sealed water tank 7 is discharged through the exhaust valve 16 during maintenance, the other end of the nitrogen gas cylinder 14 is connected with a nitrogen gas pressure boosting system discharge pipeline 21, the other end of the nitrogen gas pressure boosting system discharge pipeline 21 is connected with a nitrogen gas compressor 15, and the pressure boosting system 29 adopts the nitrogen gas compressor 15 to supplement pressure.

[0023] When the reaction kettle 5 works, the tap water in the water pump house 18 is input into the mixer seal 27 through the cooling water inlet main pipe 1 to be cooled, then is sent to the water pump house 18 through the cooling water outlet main pipe 2 to complete the circulation of the cooling water, and the safe and stable operation of the reaction kettle 5 is ensured.

[0024] When the sealing system 19 works, the water in the sealed water tank 7 is input into the mixer seal 27 through the sealing liquid inlet main pipe 4 to be mechanically sealed through the sealing liquid circulating pump 11, then is input back into the sealed water tank 7 after being cooled through the sealing liquid outlet main pipe 3 and the plate heat exchanger 6 to complete the circulation of the sealing water. The liquid level in the sealed water tank 7 is monitored through the liquid level meter 25, when the liquid level is lower than the set value, the PLC control starts the water supplement pump 9 and the water supplement valve 20, the softened water in the pure water tank 8 is supplemented into the sealed water tank 7 to the set value, and the water supplement pump 9 and the water supplement valve 20 are automatically closed after the water level reaches the set value.

[0025] When the PLC system detects that the pressure of the sealing water tank 7 is low and the sealing water pressure is insufficient, the nitrogen compressor 15 is opened by the PLC control, the pressure enters the nitrogen cylinder 14, the pressure regulating valve 13 is opened to input nitrogen into the sealing water tank 7, so that the pressure in the sealing water tank 7 is increased and restored to the set value, which is higher than the pressure of the reactor 0.1-0.2MPa, to prevent the sealing liquid from flowing backward, and when the pressure is restored, the pressure regulating valve 13 is closed. When the automatic system fails, maintenance or shutdown is required, manual operation is required to supplement the pressure beyond the set value, and the safety valve 12 will be opened by the sensor, the gas in the sealing water tank 7 is discharged through the exhaust valve 16, and the pure water in the sealing water tank 7 is discharged through the emptying valve 10, to prevent the liquid from flowing backward.

[0026] The utility model uses 1 sealed water tank control 15 agitator seals, reduces equipment area; The connection of the water pump house makes the cooling water reduce the temperature of the stirring bearing; The connection of the sealing system makes the sealing water form a water film lubrication and prevent medium from leaking through the gap between the shaft and the sealing piece, ensures the sealing performance of the equipment, and prolongs the service life of the agitator seal; The utility model realizes automation through the control of the PLC system, reduces manual water supplement and pressure increase, and improves work efficiency.

[0027] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A reactor mixer sealing and water replenishment pressurization system, comprising a pump room, a sealing system and a reactor, characterized in that: The water pump room (18) is connected to a cooling water inlet main pipe (1) and a cooling water outlet main pipe (2), and the sealing system (19) is connected to a sealing liquid outlet main pipe (3) and a sealing liquid inlet main pipe (4). The cooling water inlet main pipe (1), the cooling water outlet main pipe (2), the sealing liquid outlet main pipe (3) and the sealing liquid inlet main pipe (4) are connected to three reactors (5) through branch pipes (24). Five agitator seals (27) are provided in the reactors (5). A branch regulating valve (17) is provided on the branch pipe (24). A water supply system (28) and a pressurizing system (29) are provided in the sealing system (19).

2. The water sealing and pressurizing system for a reactor mixer according to claim 1, characterized in that: The water replenishment system (28) includes a sealed water tank (7), the sealed water tank (7) is connected to a plate heat exchanger (6), the plate heat exchanger (6) is connected to a cooling water inlet main pipe (1), a cooling water outlet main pipe (2) and a sealing liquid outlet main pipe (3), a safety valve (12) is provided on the top of the sealed water tank (7), a liquid level gauge (25) and a pressure sensor (26) are provided on the side of the sealed water tank (7), an emptying valve (10) is provided at the bottom of the sealed water tank (7), a liquid inlet at the bottom of the sealed water tank (7) is connected to a water replenishment pipe (22), a water replenishment valve (20) is provided on the water replenishment pipe (22), the other end of the water replenishment pipe (22) is connected to a water replenishment pump (9), the other end of the water replenishment pump (9) is connected to a pure water tank (8), the liquid outlet at the bottom of the sealed water tank (7) is connected to a sealing liquid circulation pump (11), and the other end of the sealing liquid circulation pump (11) is connected to the sealing liquid inlet main pipe (4).

3. The water sealing and pressurizing system for a reactor mixer according to claim 1, characterized in that: The pressurizing system (29) comprises a sealed water tank (7), the sealed water tank (7) is connected to a nitrogen inlet pipe (23), a pressure regulating valve (13) is provided on the nitrogen inlet pipe (23), the other end of the nitrogen inlet pipe (23) is respectively connected to a nitrogen bottle (14) and an exhaust valve (16), the other end of the nitrogen bottle (14) is connected to a nitrogen pressurizing system discharge pipe (21), and the other end of the nitrogen pressurizing system discharge pipe (21) is connected to a nitrogen compressor (15).

4. The sealing, replenishing and pressurizing system for a reactor mixer according to claim 1, characterized in that: The water pump room (18) and the sealing system (19) are connected via a cooling water inlet main pipe (1) and a cooling water outlet main pipe (2).

5. The sealing, replenishing and pressurizing system for a reactor mixer according to claim 1, characterized in that: The water pump room (18), water supply system (28) and pressure boosting system (29) are controlled by a PLC system.

6. The sealing, replenishing and pressurizing system for a reactor mixer according to claim 2, characterized in that: The water replenishment pump (9) and the sealing liquid circulation pump (11) are lightweight vertical multi-stage pumps.

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