Reconcentration treatment device for nanofiltration concentrated solution

Abstract

The utility model discloses a nanofiltration concentrated solution re-concentration treatment device, which relates to the technical field of concentration and filtration, and adopts the technical scheme that the nanofiltration concentrated solution re-concentration treatment device comprises a concentration tank for heating and concentration, and a stirring and filtering assembly is arranged in the concentration tank and is used for filtering and collecting water contained in each layer of concentrated solution during stirring; the device has the advantages that the stirring and filtering assembly is arranged, a filter screen is arranged to be a tubular filter screen pipe, when the concentrated solution is heated, the concentrated solution can be stirred to improve the evaporation efficiency, meanwhile, water in the concentrated solution can be filtered and collected into the filter screen pipe, and the water in the concentrated solution can be filtered and collected into the filter screen pipe; and the filter screen pipe is obliquely inserted into the concentrated solution, so that water in the concentrated solution can be filtered and collected no matter the water is at a high liquid level or a low liquid level.

Description

Technical Field

[0001] The utility model relates to the technical field of concentration and filtration, and more specifically, to a device for re-concentrating and processing nanofiltration concentrate. Background Art

[0002] In the process of industrial production, the common concentration and filtration methods include ultrafiltration, nanofiltration and reverse osmosis. Among them, ultrafiltration is mainly used for the retention of macromolecular substances, and the filtration effect can reach more than 95%; nanofiltration is mainly used for the retention of small molecular organic substances and some inorganic salts, and the desalination rate can reach more than 90%; reverse osmosis can effectively retain all dissolved salts and organic substances with a molecular weight greater than 100, and the filtration effect is close to 100%.

[0003] Nanofiltration has low energy consumption, more economical operating costs, relatively loose requirements for water quality and strong adaptability. In industrial production, many manufacturers choose nanofiltration as a more suitable treatment method considering cost, ease of operation and product requirements. However, the desalination rate of nanofiltration is still lower than 100%, and some unnecessary inorganic salts will still be retained in the concentrate, and the product purity needs to be improved. Therefore, a device for re-concentrating the concentrate is required.

[0004] In the process of technological development, there is a coffee extract concentration device that improves the concentration efficiency. It heats and pressurizes the liquid in the tank, sets a filter screen at the bottom of the tank body, sets an exhaust hole at the top of the tank body for further concentration and purification, and sets a stirring rod to stir to improve the concentration efficiency. However, during the heating and stirring process of the liquid, the effective substances condense towards the bottom of the tank, and the water containing inorganic salts floats upwards, and the liquid will be stratified, resulting in a low filtration efficiency of the filter screen at the bottom and affecting the concentration efficiency.

[0005] Therefore, in order to solve the above technical problems, the present application proposes a device for re-concentrating and processing nanofiltration concentrate. Summary of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a device for re-concentrating and processing nanofiltration concentrate.

[0007] To achieve the above purpose, the present utility model provides the following technical solutions: The device for re-concentrating and processing nanofiltration concentrate includes a concentration tank for heating and concentrating, and a stirring and filtering assembly is installed in the concentration tank for filtering and collecting the water contained in each layer of concentrate during stirring. A suction assembly is arranged in the stirring and filtering assembly for pumping out the filtered and collected water.

[0008] Among them, the stirring and filtering assembly includes a motor. At the front end of the output shaft of the motor, there is a bevel gear B, which meshes with a bevel gear A. The bevel gear A is arranged on the surface of a support pipe. At one end of the support pipe close to the ground, there is a filter screen pipe to filter the concentrated liquid by driving the filter screen pipe to rotate through the motor.

[0009] Specifically, the filter screen pipe is inclined and a plurality of groups are arranged circumferentially around the central axis of the support pipe. The part of the filter screen pipe buried in the concentrated liquid is evenly provided with filter holes to filter the water in the concentrated liquid.

[0010] Preferably, the suction assembly includes a suction pipe. One end of the suction pipe is the suction end with a suction head, and the other end is the discharge end. After passing through the support pipe, there is a water pump. The part of the suction pipe penetrating into the support pipe is installed on the inner wall of the support pipe through a support frame. The suction head is arranged at the bottom of the filter screen pipe to suck the water filtered into the filter screen pipe.

[0011] Preferably, a top cover is connected to the concentrated tank through a hinge. The support pipe is rotatably installed on the top cover, and the motor is installed on the top cover through a mounting frame.

[0012] Preferably, an exhaust port communicating with the inside of the concentrated tank is arranged on the top cover to discharge the water vapor generated by heating. A pressure control valve is arranged on the concentrated tank to adjust the pressure to improve the concentration rate.

[0013] Preferably, a feed port is arranged on the top cover to inject the concentrated liquid to be concentrated into the concentrated tank. A discharge port is arranged at the bottom of the concentrated tank to discharge the further concentrated concentrated liquid.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, by setting the stirring and filtering assembly and setting the filter screen as a tubular filter screen pipe, when the concentrated liquid is heated, the concentrated liquid can be stirred to improve the evaporation efficiency, and at the same time, the water in the concentrated liquid can be filtered and collected into the filter screen pipe. The filter screen pipe is obliquely inserted into the concentrated liquid, so that the water in the concentrated liquid can be filtered and collected whether it is at a high liquid level or a low liquid level, thus solving the problem in the prior art that during the heating and stirring process of the liquid, the effective substances condense towards the bottom of the tank, the water containing inorganic salts floats upwards, and the liquid will show a layering phenomenon, resulting in a low filtering efficiency of the filter screen at the bottom and affecting the concentration efficiency.

[0016] 2. In the utility model, by setting a suction assembly in the stirring and filtering assembly, when the filter screen pipe filters and collects water, the collected water can be sucked at the bottom of the filter screen pipe to prevent the filtered water from returning to the concentrated liquid, thereby improving the concentration efficiency. Brief Description of the Drawings

[0017] The drawings described herein are provided to further understand the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the suction pipe in the present utility model;

[0020] Figure 3 is a schematic structural diagram of the upper cover in the present utility model;

[0021] Figure 4 is a schematic structural diagram of the stirring and filtering assembly in the present utility model

[0022] Figure 5 is a schematic structural diagram of the support pipe in the present utility model;

[0023] Figure 6 is a schematic structural diagram of the suction head in the present utility model.

[0024] 1. Concentrating tank;

[0025] 2. Stirring and filtering assembly;

[0026] 21. Filter screen pipe; 22. Support pipe; 23. Bevel gear A; 24. Bevel gear B; 25. Motor;

[0027] 3. Suction assembly;

[0028] 31. Suction pipe; 32. Support frame; 33. Suction head;

[0029] 4. Exhaust port; 5. Pressure control valve; 6. Discharge port; 7. Feed port; 8. Upper cover; 9. Mounting rack. Detailed Description of the Preferred Embodiments

[0030] As Figures 1-6 shown, a nanofiltration concentrated liquid re-concentration treatment device includes a concentrating tank 1 for heating and concentrating. The concentrating tank 1 is hinged with an upper cover 8, and a feed port 7 is arranged on the upper cover 8. When in use, the concentrated liquid to be concentrated is injected into the concentrating tank 1. A stirring and filtering assembly 2 is installed in the concentrating tank 1 for filtering and collecting the water contained in each layer of concentrated liquid during stirring. A suction assembly 3 is arranged in the stirring and filtering assembly 2 for sucking out the filtered and collected water;

[0031] An exhaust port 4 communicating with the inside of the concentration tank 1 is provided on the upper cover 8 for discharging the water vapor generated by heating. A pressure control valve 5 is provided on the concentration tank 1 for adjusting the pressure to increase the concentration rate;

[0032] A discharge port 6 is provided at the bottom of the concentration tank 1 for discharging the concentrated liquid after further concentration;

[0033] The stirring and filtering assembly 2 includes a motor 25. At the front end of the output shaft of the motor 25, a bevel gear B24 is provided. The bevel gear B24 meshes with a bevel gear A23. The bevel gear A23 is provided on the surface of the support pipe 22. A filter screen pipe 21 is provided at one end of the support pipe 22 close to the ground to drive the filter screen pipe 21 to rotate through the motor 25 to filter the concentrated liquid;

[0034] The support pipe 22 is rotatably installed on the upper cover 8, and the motor 25 is installed on the upper cover 8 through a mounting bracket 9;

[0035] The motor 25 is braked and transmitted to the bevel gear B24. The bevel gear B24 drives the bevel gear A23 to rotate, thereby driving the support pipe 22 to rotate in the upper cover 8. The filter screen pipe 21 at one end of the support pipe 22 close to the ground rotates to stir the concentrated liquid;

[0036] The filter screen pipe 21 is inclined and a plurality of groups are arranged circumferentially around the central axis of the support pipe 22. The part of the filter screen pipe 21 buried in the concentrated liquid is evenly provided with filter holes to filter the water in the concentrated liquid;

[0037] During the heating process, the overall temperature of the concentrated liquid tends to be consistent. The water in the concentrated liquid at each liquid level is heated and gradually separated from the concentrated liquid. During the rotation and stirring of the filter screen pipe 21, the outer diameter of the water molecules is smaller and will enter the filter screen pipe 21 through the filter holes. Only water in the filter screen pipe 21 will not stratify, and the water flows along the filter screen pipe 21 and finally converges at the bottom of the filter screen pipe 21;

[0038] Therefore, by setting the stirring and filtering assembly 2 and setting the filter screen as a tubular filter screen pipe 21, when the concentrated liquid is heated, while stirring the concentrated liquid to improve the evaporation efficiency, the water in the concentrated liquid can be filtered and collected into the filter screen pipe 21. The filter screen pipe 21 is obliquely inserted into the concentrated liquid, so that the water in the concentrated liquid can be filtered and collected regardless of whether it is at a high liquid level or a low liquid level, thus solving the problem in the prior art that during the heating and stirring process of the liquid, the effective substances condense towards the bottom of the tank, the water containing inorganic salts floats upwards, the liquid will stratify, resulting in a low filtering efficiency of the bottom filter screen and affecting the concentration efficiency.

[0039] The suction assembly 3 includes a suction pipe 31. One end of the suction pipe 31 is the suction end where a suction head 33 is provided. The other end of the suction pipe 31 is the discharge end, which is provided with a water pump after passing through the support pipe 22. The part of the suction pipe 31 that penetrates into the support pipe 22 is installed on the inner wall of the support pipe 22 through a support frame 32. The suction head 33 is arranged at the bottom of the filter screen pipe 21 to suck the water filtered into the filter screen pipe 21.

[0040] The suction head 33 can be provided with weighted lead blocks to keep it at the bottom of the filter screen pipe 21. After the water pump is started, the suction head 33 sucks the water at the bottom of the filter screen pipe 21 and transfers it outwards from the concentration tank 1 through the suction pipe 31, thereby preventing the water collected in the filter screen pipe 21 from flowing back into the concentrated liquid through the filter holes.

[0041] Therefore, by arranging the suction assembly 3 in the stirring and filtering assembly 2, it is possible to suck the collected water at the bottom of the filter screen pipe 21 when the filter screen pipe 21 filters and collects water, preventing the filtered water from returning to the concentrated liquid, thereby improving the concentration efficiency.

[0042] The above is only the preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Any ordinary technician in the industry can smoothly implement the present invention according to the illustrations in the specification and the above description. However, any minor changes, modifications, and equivalent variations made by those skilled in the art within the scope of the technical solution of the present invention using the technical content disclosed above are equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications, and variations made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A nanofiltration concentrate re-concentration treatment device, characterized in that, It includes a concentration tank (1) for heating and concentration. A stirring and filtering assembly (2) is installed in the concentration tank (1) to filter and collect the water contained in each layer of concentrated liquid during agitation. A suction assembly (3) is provided in the stirring and filtering assembly (2) to extract the filtered and collected water. Among them, the stirring and filtering assembly (2) includes a motor (25). At the front end of the output shaft of the motor (25), there is a bevel gear B (24). The bevel gear B (24) meshes with a bevel gear A (23). The bevel gear A (23) is arranged on the surface of a support pipe (22). One end of the support pipe (22) close to the ground is provided with a filter screen pipe (21) to drive the filter screen pipe (21) to rotate through the motor (25) to filter the concentrated liquid. Specifically, the filter screen pipe (21) is inclined and a plurality of groups are arranged circumferentially around the central axis where the support pipe (22) is located. The part of the filter screen pipe (21) buried in the concentrated liquid is evenly provided with filter holes to filter the water in the concentrated liquid.

2. The nanofiltration concentrate re-concentration treatment device according to claim 1, wherein: The suction assembly (3) includes a suction pipe (31). One end of the suction pipe (31) is an inhalation end provided with a suction head (33). The other end of the suction pipe (31) is an extraction end, which is provided with a water pump after passing through the support pipe (22). The part of the suction pipe (31) passing into the support pipe (22) is installed on the inner wall of the support pipe (22) through a support frame (32). The suction head (33) is arranged at the bottom of the filter screen pipe (21) to suck the water filtered into the filter screen pipe (21).

3. The nanofiltration concentrate re-concentration treatment device according to claim 2, characterized in that: A top cover (8) is hinged to the concentration tank (1). The support pipe (22) is rotatably installed on the top cover (8). The motor (25) is installed on the top cover (8) through a mounting frame (9).

4. A nanofiltration concentrate re-concentration treatment device according to claim 3, characterized in that: An exhaust port (4) communicating with the inside of the concentration tank (1) is provided on the top cover (8) to discharge the water vapor generated by heating. A pneumatic control valve (5) is provided on the concentration tank (1) to adjust the air pressure to increase the concentration rate.

5. The nanofiltration concentrate re-concentration treatment device according to claim 4, characterized in that: A feed port (7) is provided on the top cover (8) to inject the concentrated liquid to be concentrated into the concentration tank (1). A discharge port (6) is provided at the bottom of the concentration tank (1) to discharge the further concentrated concentrated liquid.

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