Vacuum evaporation concentrator

Abstract

The utility model relates to the technical field of concentration tanks, in particular to a vacuum evaporation concentrator which comprises a concentration tank, a vacuum pump is fixedly mounted on the outer wall of the concentration tank, an air inlet of the vacuum pump is communicated with the inside of the concentration tank through an exhaust pipe, and at least one heating plate is mounted on the inner wall of the concentration tank. A water tank is fixedly connected to the outer wall of the concentration tank. The vacuum pump is used for exhausting air from the concentration tank to form a vacuum environment, so that the boiling point of a solution is reduced, and evaporation is accelerated. Steam generated in the concentration tank is guided to the water tank to heat water in the water tank, and heat of high-temperature steam can be recycled. And the heated water is conveyed back to the top of the concentration tank through the return pipe and the water pump, and is uniformly sprayed through the rotary spray head to clean the concentration tank.

Description

Technical Field

[0001] The utility model relates to the technical field of concentration tanks, in particular to a vacuum evaporation concentrator. Background Art

[0002] In the chemical, pharmaceutical, and food industries, concentration is a key step in extracting and purifying substances. Traditional concentration techniques rely primarily on heating and evaporation, which increases the solution temperature to remove the solvent and achieve concentration.

[0003] However, the steam generated during the evaporation process is often directly discharged into the air, wasting the heat contained in the steam and potentially polluting the environment. Furthermore, the cleanliness of the concentration tank, a core piece of equipment in the concentration process, is directly related to the concentration effect and product quality. However, traditional concentration technologies often neglect cleaning the tank during the concentration process, leading to the accumulation of residues inside the tank, which affects the subsequent concentration effect and product quality. In light of this, we propose a vacuum evaporation concentrator. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a vacuum evaporation concentrator.

[0005] The technical solution of the utility model is:

[0006] A vacuum evaporation concentrator comprises a concentration tank, a vacuum pump is fixedly mounted on the outer wall of the concentration tank, an air inlet of the vacuum pump is connected to the interior of the concentration tank through an exhaust pipe, at least one heating plate is mounted on the inner wall of the concentration tank, a water tank is fixedly connected to the outer wall of the concentration tank, a steam delivery pipe is mounted on the water tank, the steam delivery pipe is connected to the interior of the concentration tank near the top, a return pipe is mounted near the bottom of the water tank, a water pump is mounted on the return pipe, one end of the return pipe away from the water tank is connected to the top center of the concentration tank, a rotary nozzle is mounted on the return pipe at one end of the concentration tank, an injection pipe and a discharge pipe are mounted near the bottom of the outer wall of the concentration tank, and a second stop valve is mounted on both the injection pipe and the discharge pipe.

[0007] As a preferred technical solution, a first electromagnetic one-way valve is installed on the exhaust pipe, a second electromagnetic one-way valve is installed on the steam delivery pipe, and a third electromagnetic one-way valve is installed on the return pipe.

[0008] As a preferred technical solution, a sealing cover is installed on the top of the water tank, an exhaust hole is opened on the top of the water tank, and a dustproof net is installed in the exhaust hole.

[0009] As a preferred technical solution, at least three legs distributed in a circular array are installed at the bottom of the concentration tank, and a pressure sensor is installed on the inner wall of the top of the concentration tank.

[0010] As a preferred technical solution, a partition plate is fixedly installed near the bottom of the water tank, the steam delivery pipe is located at one end of the water tank and extends to the bottom of the partition plate, and the partition plate is provided with a number of evenly distributed air holes.

[0011] As a preferred technical solution, a turntable is provided at the bottom of the concentration tank, on which a number of equally spaced vertical rods are fixedly mounted. A mixing motor is installed at the bottom of the concentration tank, and the output shaft of the mixing motor is coaxially fixed to the turntable.

[0012] As a preferred technical solution, a plurality of stirring rods are fixed on the outer wall of each vertical rod close to the center of the turntable.

[0013] As a preferred technical solution, a drain pipe is installed on the outer wall of the water tank near the bottom, and a first stop valve is installed on the drain pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This utility model uses a vacuum pump to evacuate the concentrator tank, creating a vacuum environment that lowers the boiling point of the solution and accelerates evaporation. Steam generated within the concentrator tank is directed to a water tank, where it heats the water inside, recovering the heat from the high-temperature steam. The heated water is then transported back to the top of the concentrator tank via a return pipe and a water pump, where it is evenly sprayed by a rotating nozzle to clean the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the concentration tank in the present utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the water tank in the utility model;

[0019] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle;

[0020] The meaning of each number in the figure is:

[0021] 1. Concentration tank; 10. Injection pipe; 11. Discharge pipe; 12. Second stop valve; 13. Turntable; 14. Mixing motor; 15. Vertical rod; 16. Stirring rod; 17. Heating plate; 2. Water tank; 20. Drain pipe; 21. First stop valve; 22. Sealing cover; 23. Exhaust hole; 24. Steam delivery pipe; 240. Second solenoid one-way valve; 25. Return pipe; 250. Water pump; 251. Third solenoid one-way valve; 26. Partition plate; 260. Air vent; 27. Rotating nozzle; 28. Pressure sensor; 3. Support leg; 4. Vacuum pump; 40. Exhaust pipe; 41. First solenoid one-way valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1-4 , the utility model provides a technical solution:

[0024] A vacuum evaporation concentrator includes a concentrating tank 1. A vacuum pump 4 is fixedly mounted on the outer wall of the concentrating tank 1. The air inlet of the vacuum pump 4 is connected to the interior of the concentrating tank 1 via an exhaust pipe 40. At least one heating plate 17 is mounted on the inner wall of the concentrating tank 1. A water tank 2 is fixedly connected to the outer wall of the concentrating tank 1. A steam delivery pipe 24 is mounted on the water tank 2 and is connected to the interior of the concentrating tank 1 near the top. A return pipe 25 is mounted near the bottom of the water tank 2. A water pump 250 is mounted on the return pipe 25. The end of the return pipe 25 away from the water tank 2 is connected to the top center of the concentrating tank 1. A rotating nozzle 27 is mounted on one end of the return pipe 25. An injection pipe 10 and an exhaust pipe 11 are mounted on the outer wall of the concentrating tank 1 near the bottom. A second stop valve 12 is mounted on each of the injection pipe 10 and the exhaust pipe 11. The vacuum pump 4 evacuates the concentrating tank 1 to create a vacuum environment, lowering the boiling point of the solution and accelerating evaporation. Steam generated within concentrator tank 1 is directed to water tank 2, where it heats the water within, recovering the heat from the high-temperature steam. The heated water is then transported back to the top of concentrator tank 1 via return pipe 25 and water pump 250, where it is evenly sprayed by rotating nozzle 27 to clean the tank.

[0025] As a preferred feature of this embodiment, a first electromagnetic check valve 41 is installed on the exhaust pipe 40, a second electromagnetic check valve 240 is installed on the steam delivery pipe 24, and a third electromagnetic check valve 251 is installed on the return pipe 25. The installation of the electromagnetic check valves controls the flow of steam, ensuring that steam can only flow from the concentration tank 1 to the water tank 2 in the set direction, preventing backflow and thus ensuring the stability and safety of the heating and cleaning processes.

[0026] As a preferred feature of this embodiment, a sealing cover 22 is installed on the top of the water tank 2. An exhaust hole 23 is formed on the top of the water tank 2, and a dust screen is installed in the exhaust hole 23. The design of the sealing cover 22 and the dust screen prevents external dust and impurities from entering the water tank 2, keeping the interior of the water tank 2 clean, while preventing steam from escaping and improving energy efficiency.

[0027] As a preferred feature of this embodiment, at least three legs 3 are mounted in a circular array at the bottom of the concentrating tank 1, and a pressure sensor 28 is mounted on the inner wall of the top of the concentrating tank 1. The legs 3 provide stable support for the concentrating tank 1, preventing it from tipping over during use. The pressure sensor 28 monitors pressure changes within the concentrating tank 1 in real time, ensuring that the vacuum level remains within a set range, thereby improving the concentration effect and equipment safety.

[0028] As a preferred feature of this embodiment, a partition plate 26 is fixedly installed near the bottom of the water tank 2. The steam delivery pipe 24 is located at one end of the water tank 2 and extends below the partition plate 26. The partition plate 26 is provided with a plurality of evenly distributed air holes 260. The partition plate 26 and air holes 260 can disperse the high-temperature steam discharged from the steam delivery pipe 24.

[0029] As a preferred feature of this embodiment, a turntable 13 is provided at the bottom of the concentration tank 1. Several equally spaced vertical rods 15 are fixedly mounted on the turntable 13. A mixing motor 14 is also mounted at the bottom of the concentration tank 1. The output shaft of the mixing motor 14 is coaxially fixed to the turntable 13. The design of the turntable 13, vertical rods 15, and mixing motor 14 allows for mixing and stirring of the solution within the concentration tank 1, preventing localized overheating and coking of the solution during evaporation, and improving the concentration effect and product quality.

[0030] As a preferred embodiment of the present invention, a plurality of stirring rods 16 are fixed to the outer wall of each vertical rod 15 near the center of the turntable 13. The design of the stirring rods 16 further enhances the mixing and stirring effect of the solution, making the solution more uniform during the evaporation process, improving the concentration efficiency and product quality.

[0031] As a preferred embodiment of the present invention, a drain pipe 20 is installed near the bottom of the outer wall of the water tank 2, and a first stop valve 21 is installed on the drain pipe 20. The design of the drain pipe 20 and the first stop valve 21 facilitates the drainage operation of the water tank 2 to recover the unused hot water in the water tank 2.

[0032] When the vacuum evaporation concentrator of the utility model is used:

[0033] First, the solution to be concentrated is added to the concentration tank 1 through the injection pipe 10, ensuring that the second shut-off valve 12 is closed to prevent the solution from escaping during the addition process. Next, the vacuum pump 4 is activated to evacuate the concentration tank 1 through the exhaust pipe 40, creating a vacuum environment. This vacuum lowers the boiling point of the solution, accelerating the evaporation process. During this process, the first electromagnetic one-way valve 41 ensures that steam can only flow in one direction, from the concentration tank 1 to the exhaust pipe 40, preventing backflow.

[0034] As evaporation proceeds, the steam generated within concentrator tank 1 is directed to water tank 2, where it enters through steam delivery pipe 24, exchanging heat with the water within tank 2, thereby heating the water within. A second electromagnetic one-way valve 240 ensures unidirectional steam flow during this process, preventing steam from flowing back into concentrator tank 1. After use, the heated water in concentrator tank 1 is transported back to the top of concentrator tank 1 via return pipe 25 and water pump 250. Rotating nozzle 27 evenly sprays the heated water onto the inner wall of concentrator tank 1, cleaning it. A third electromagnetic one-way valve 251 ensures unidirectional water flow in return pipe 25, preventing it from flowing back into tank 2.

[0035] During the evaporation process, mixing motor 14 rotates turntable 13 and vertical rod 15, mixing and stirring the solution within concentration tank 1. The design of stirring rod 16 further enhances the mixing effect of the solution, making the solution more uniform during evaporation, improving concentration efficiency and product quality. Simultaneously, pressure sensor 28 monitors pressure changes within concentration tank 1 in real time, ensuring that the vacuum level remains within the set range, thereby enhancing concentration efficiency and equipment safety.

[0036] When the concentration process is completed, the second stop valve 12 on the discharge pipe 11 is opened to discharge the concentrated solution out of the concentration tank 1. Subsequently, the unused hot water in the water tank 2 can be recovered by opening the first stop valve 21 on the drain pipe 20.

[0037] In summary, the vacuum evaporation concentrator of the utility model realizes an efficient and stable concentration process through designs such as vacuum evaporation, steam heating recovery, water reflux cleaning, and mixing and stirring, while improving the maintainability and service life of the equipment.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum evaporation concentrator, characterized in that: The invention comprises a concentration tank (1), wherein a vacuum pump (4) is fixedly mounted on the outer wall of the concentration tank (1), an air inlet of the vacuum pump (4) is communicated with the interior of the concentration tank (1) through an exhaust pipe (40), at least one heating plate (17) is mounted on the inner wall of the concentration tank (1), a water tank (2) is fixedly connected to the outer wall of the concentration tank (1), a steam delivery pipe (24) is mounted on the water tank (2), the steam delivery pipe (24) is communicated with the interior of the concentration tank (1) near the top, and the water tank (2) is connected to the inner wall of the concentration tank (1). A return pipe (25) is installed near the bottom of the tank (2), and a water pump (250) is installed on the return pipe (25). One end of the return pipe (25) away from the water tank (2) is connected to the center of the top of the concentration tank (1). A rotating nozzle (27) is installed at one end of the return pipe (25) located at the concentration tank (1). An injection pipe (10) and a discharge pipe (11) are installed near the bottom of the outer wall of the concentration tank (1). A second stop valve (12) is installed on both the injection pipe (10) and the discharge pipe (11).

2. The vacuum evaporation concentrator according to claim 1, wherein: A first electromagnetic one-way valve (41) is installed on the air extraction pipe (40), a second electromagnetic one-way valve (240) is installed on the steam delivery pipe (24), and a third electromagnetic one-way valve (251) is installed on the return pipe (25).

3. The vacuum evaporation concentrator according to claim 2, wherein: A sealing cover (22) is installed on the top of the water tank (2), an exhaust hole (23) is opened on the top of the water tank (2), and a dustproof net is installed in the exhaust hole (23).

4. The vacuum evaporation concentrator according to claim 3, wherein: At least three supporting legs (3) distributed in a circular array are installed at the bottom of the concentration tank (1), and a pressure sensor (28) is installed on the inner wall of the top of the concentration tank (1).

5. The vacuum evaporation concentrator according to claim 4, characterized in that: A partition plate (26) is fixedly installed near the bottom of the water tank (2). The steam delivery pipe (24) is located at one end of the water tank (2) and extends below the partition plate (26). The partition plate (26) is provided with a plurality of evenly distributed air holes (260).

6. The vacuum evaporation concentrator according to claim 5, characterized in that: A turntable (13) is provided at the bottom of the concentration tank (1), and a plurality of vertical rods (15) arranged at equal intervals are fixedly mounted on the turntable (13). A mixing motor (14) is installed at the bottom of the concentration tank (1), and an output shaft of the mixing motor (14) is coaxially fixed to the turntable (13).

7. The vacuum evaporation concentrator according to claim 6, wherein: A plurality of stirring rods (16) are fixed on the outer wall of each vertical rod (15) near the center of the turntable (13).

8. The vacuum evaporation concentrator according to claim 7, wherein: A drainage pipe (20) is installed on the outer wall of the water tank (2) near the bottom, and a first stop valve (21) is installed on the drainage pipe (20).

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