CN218741284U - Integrated membrane separation system special for various molecular weight cut-off laboratories - Google Patents
Integrated membrane separation system special for various molecular weight cut-off laboratories Download PDFInfo
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- CN218741284U CN218741284U CN202223320647.1U CN202223320647U CN218741284U CN 218741284 U CN218741284 U CN 218741284U CN 202223320647 U CN202223320647 U CN 202223320647U CN 218741284 U CN218741284 U CN 218741284U
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Abstract
The application relates to an integrated multi-molecular-weight-cut-off laboratory special membrane separation system, which comprises a concentration tank; the membrane separators are different in pore size, and concentrated solution outlets of the membrane separators are communicated with the concentrating box; the water inlet of the raw liquid pump is connected with the concentration tank, and the water outlet of the raw liquid pump is respectively communicated with the concentrated solution inlet of the membrane separator; one end of the membrane separator is provided with a filtrate outlet which is provided with a sampling valve. The membrane separators with different molecular weights are arranged, so that different substances can be separated by different membrane separators when materials are concentrated and separated, and the membrane assemblies with different molecular weights are concentrated and separated in an experiment to achieve the optimal separation effect of feed liquid and determine the membrane assemblies of later projects. Based on the difference of the operating pressure of the membrane assemblies with different molecular weights, the experiment can be carried out without directly replacing the membrane assemblies in the membrane equipment with different molecular weights, so that a large amount of experiment cost and experiment time are saved.
Description
Technical Field
The application relates to the technical field of membrane separation equipment, in particular to an integrated membrane separation system special for various molecular weight cut-off laboratories.
Background
The membrane separation technology is a novel high-efficiency separation technology, and compared with the traditional separation method, the membrane separation technology has the advantages of energy conservation, almost no pollution, no health hazard, no need of filter aid and the like. The separation, concentration and purification of solute solvents with different molecular weights are achieved by utilizing the screening principle.
Chinese patent with application number CN201811267551.9 discloses a membrane separation quality-divided water supply device, which comprises a transparent water storage container, a water inlet pipe, output pipes with different water qualities and membrane separators with different molecular weights, and is characterized in that: the water inlet pipe with a one-way valve is connected with the raw water cavity of the transparent water storage container, the bottom of the raw water cavity is provided with a cleaning water outlet pipe with a valve switch, the transparent water storage container is internally provided with a first stage membrane separator, a second stage membrane separator and a third stage membrane separator from bottom to top in sequence, and the parts of the formed first, second and third cavities, which are close to the bottom, are provided with corresponding output pipes.
According to the scheme, the membrane separators with different molecular weights which are connected in sequence are used for separating water, so that tap water with different water qualities is obtained. However, when different substances need to be filtered, the molecular weight of the membrane is different, and in the scheme, the different substances are difficult to be filtered respectively.
Therefore, a new technical solution is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to be able to filter different substances respectively under the condition of not replacing the membrane separator, the application provides a special membrane separation system for integrated multiple molecular weight cut-off laboratories.
The application provides a special membrane separation system in multiple trapped molecular weight laboratory of integral type, adopts following technical scheme:
an integrated multi-molecular-weight-cut-off laboratory special membrane separation system comprises,
a concentration tank containing a concentrate;
the membrane separators are different in pore size, and concentrated solution outlets of the membrane separators are communicated with a concentrating tank;
the water inlet of the raw liquid pump is connected with the concentration tank, and the water outlet of the raw liquid pump is respectively communicated with the concentrated solution inlet of the membrane separator;
and a filtrate outlet at one end of the membrane separator is provided with a sampling valve.
By adopting the technical scheme, the membrane separators with different molecular weights are arranged, so that different substances can be separated by different membrane separators when materials are concentrated and separated, the replacement times of the membrane separators are reduced in the using process, and the membrane assemblies with different molecular weights are required to be concentrated and separated in an experiment to achieve the optimal separation effect of feed liquid and determine the membrane assemblies of later-stage projects. The operation pressures of the membrane components with different molecular weights are different, namely the membrane components in the membrane equipment with different molecular weights cannot be directly replaced and used, so that an integrated special membrane separation system for a plurality of molecular weight cut-off laboratories is specially designed for saving a large amount of experiment cost and experiment time.
Optionally: and the concentrated solution inlets of the membrane separators are provided with first valves.
Through adopting above-mentioned technical scheme, thereby decide whether the concentrate gets into corresponding membrane separator through controlling first valve to concentrate can not get into when need not using this membrane separator, thereby makes the difficult jam of membrane separator.
Optionally: and a second valve is arranged at a filtrate outlet of the membrane separator, which is far away from the sampling valve, and one end of the second valve, which is far away from the membrane separator, is communicated with the concentration tank.
Through adopting above-mentioned technical scheme, when need not detecting the liquid of filtering off, can directly discharge the liquid of filtering off to the concentrator box in, be convenient for subsequent continuation test.
Optionally: the membrane separator is characterized by further comprising a backwashing mechanism for cleaning the membrane separator, the backwashing mechanism comprises a cleaning water tank and a cleaning pump connected to the cleaning water tank, and a water outlet of the cleaning pump can be communicated with one end, far away from the membrane separator, of the first valve.
By adopting the technical scheme, after the membrane separator is used for a long time and the flux is reduced, the back washing mechanism is utilized to introduce clean water to wash the interior of the membrane separator, so that the flux of the membrane separator can be recovered, and the membrane separator can be continuously used.
Optionally: the back washing mechanism is also connected with an ultrafiltration membrane group for filtering liquid in the washing water tank, the water outlet of the washing pump is communicated with the concentrated solution inlet of the ultrafiltration membrane group, the filtrate outlet of the ultrafiltration membrane group is communicated with the washing water tank, and a third valve is arranged between the concentrated solution inlet of the ultrafiltration membrane group and the washing pump.
By adopting the technical scheme, when the membrane separator is washed by the liquid in the washing tank, the liquid in the washing tank is firstly filtered by the ultrafiltration membrane group in advance, so that the backwashing effect is better.
Optionally: and a concentrated solution outlet of the ultrafiltration membrane group is also communicated with the cleaning water tank, and a fourth valve is arranged at the concentrated solution outlet of the ultrafiltration membrane group.
Through adopting above-mentioned technical scheme, after liquid filtration completion and the completion back flush that will wash the incasement, the concentrate in the ultrafiltration membrane group can continue to flow into and wash the incasement to can not exert an influence to the material content in the concentrator box.
Optionally: and a fifth valve for opening and closing the circuits of the third valve and the first valve is arranged between the third valve and the first valve.
Through adopting above-mentioned technical scheme, when utilizing milipore filter group to filter the liquid that washs the incasement, no longer need close first valve one by one alone to the process that makes the liquid that washs the incasement is more convenient.
Optionally: the water outlet of the raw liquid pump is further connected with a pressurizing and filtering mechanism, the pressurizing and filtering mechanism comprises a pressurizing pump and a pressurizing and filtering module connected to the water outlet of the pressurizing pump, a concentrated liquid outlet and a filtered liquid outlet of the pressurizing and filtering module are communicated with a concentrating tank, a water inlet of the pressurizing pump is communicated with the water outlet of the raw liquid pump, a sixth valve is arranged between the pressurizing pump and the raw liquid pump, a first valve is arranged at the concentrated liquid outlet of the pressurizing and filtering module, and a second valve is arranged at the filtered liquid outlet of the pressurizing and filtering module.
Through adopting above-mentioned technical scheme, utilize the force (forcing) pump to pressurize the concentrate to make the concentrate can filter under the pressurized state, make the concentrate can filter more kinds.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the plurality of membrane separators with different molecular weights, when different substances are separated, the membrane separators do not need to be replaced every time, so that the substances are more conveniently separated;
2. by arranging the back-flushing mechanism, the membrane separator is flushed by the back-flushing mechanism after the flux of the membrane separator is reduced, so that the flux in the membrane separator can be recovered, and the service life of the membrane separator is prolonged.
Drawings
Fig. 1 is a schematic diagram for showing a relationship between structural pathways according to an embodiment of the present application.
In the figure, 1, a concentrator tank; 2. a membrane separator; 21. a first valve; 22. a sixth valve; 23. a seventh valve; 24. a sampling valve; 25. a second valve; 3. a stock solution pump; 4. a backwashing mechanism; 41. cleaning the water tank; 42. cleaning the pump; 5. an ultrafiltration membrane group; 51. a third valve; 52. an eighth valve; 53. a fourth valve; 54. a fifth valve; 61. A pressure pump; 62. a pressure filtration module.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The application discloses a special membrane separation system in multiple trapped molecular weight laboratory of integral type, as shown in fig. 1, including the concentrator box 1 that is used for holding the concentrate, carry out a plurality of membrane separators 2 that separate to the concentrate and be used for driving the concentrate to get into the stock solution pump 3 of membrane separator 2. The water inlet of the raw liquid pump 3 is communicated with the concentration tank 1, the water outlet of the raw liquid pump 3 is simultaneously connected with the concentrated liquid inlet of the membrane separator 2, and the concentrated liquid inlet of the membrane separator 2 is provided with a first valve 21 for opening and closing the opening. The plurality of membrane separators 2 have different molecular weights so that selective opening of the first valve 21 allows filtration of different substances. The concentrated solution outlets of the membrane separators 2 are communicated with the concentrating box 1, the concentrated solution outlets of the membrane separators 2 are respectively connected with sixth valves 22, one ends, far away from the membrane separators 2, of the sixth valves 22 are jointly connected with seventh valves 23, and the other ends of the seventh valves 23 are communicated with the concentrating box 1. The membrane separator 2 is provided with a sampling valve 24 at the filtrate outlet at one end, so that the filtered filtrate is sampled by the sampling valve 24, thereby facilitating the analysis of the filtering effect of the membrane separator 2 with different molecular weights on different substances. The filtrate outlets at the other ends of the membrane separators 2 are all communicated with the concentrating tank 1, and the filtrate outlet of the membrane separator 2 far away from the sampling valve 24 is provided with a second valve 25 for opening and closing the filtrate outlet, and whether the filtrate in the membrane separator 2 flows into the concentrating tank 1 is controlled through the second valve 25.
After long-term use, the flux in the membrane separator 2 will be reduced, so as to affect the flow rate of filtration, and therefore, a back washing mechanism 4 for cleaning the membrane separator 2 is further provided, the back washing mechanism 4 comprises a cleaning water tank 41 and a cleaning pump 42 connected to the cleaning water tank 41, the water inlet of the cleaning pump 42 is communicated with the cleaning water tank 41, and the water outlet of the cleaning pump 42 can be communicated with one end of the first valve 21 far away from the membrane separator 2, so that clean water or detergent and the like are injected into the membrane separator 2 by the cleaning pump 42 to wash impurities in the membrane separator 2, and the flux of the membrane separator 2 is recovered.
Because the water in the cleaning tank is not separated yet, impurities still exist, and the cleaning effect of the membrane separation mechanism is not ideal when the water in the cleaning tank is directly used for backwashing, the backwashing mechanism 4 is also connected with an ultrafiltration membrane group 5 for filtering the liquid in the cleaning water tank 41, the water outlet of the cleaning pump 42 is also communicated with the concentrated solution inlet of the ultrafiltration membrane group 5, and the filtrate outlet and the concentrated solution outlet of the ultrafiltration membrane group 5 are respectively communicated with the cleaning water tank 41. The concentrated solution inlets of the ultrafiltration membrane module 5 are all provided with third valves 51, and one end of each third valve 51 far away from the ultrafiltration membrane module 5 is opened and is communicated with the water outlet of the cleaning pump 42. The filtrate delivery port department of ultrafiltration membrane group 5 is provided with eighth valve 52 respectively, the one end that ultrafiltration membrane group 5 was kept away from to eighth valve 52 communicates with washing water tank 41, the concentrate exit of ultrafiltration membrane group 5 is provided with fourth valve 53, the one end that ultrafiltration membrane group 5 was kept away from to fourth valve 53 communicates with washing water tank 41, water in will wasing water tank 41 before the back flush needs to be carried out lets in ultrafiltration membrane group 5 and filters, and close fourth valve 53 and make the concentrate can not get into again in the washing water tank 41, thereby go again after making the water in the washing water tank 41 filtered and wash membrane separator 2, make the cleaning performance of membrane separation difficult for receiving the influence.
In order to prevent the first valves 21 from being closed one by one when the liquid in the cleaning water tank 41 enters the ultrafiltration membrane group 5 for filtration, the fifth valves 54 for opening and closing the loops of the first valves 21 and the third valves 51 are arranged between the openings of the first valves 21 far from the ultrafiltration membrane group 5 and the openings of the second valves 51 far from the membrane separator 2, when the cleaning pump 42 introduces the water in the cleaning water tank 41 into the ultrafiltration membrane group 5, the fifth valves 54 can be directly closed, so that the first valves 21 do not need to be closed one by one, and the liquid in the cleaning water tank 41 is more conveniently filtered.
The delivery port of the raw liquid pump 3 is also connected with a pressurizing and filtering mechanism, the pressurizing and filtering mechanism comprises a pressurizing pump 61 and a pressurizing and filtering module 62 connected to the delivery port of the pressurizing pump 61, the concentrated liquid outlet and the filtered liquid outlet of the pressurizing and filtering module 62 are both communicated with the concentrating tank 1, the concentrated liquid outlet of the pressurizing and filtering module 62 is provided with a first valve 21, and the filtered liquid outlet of the pressurizing and filtering module 62 is provided with a second valve 25. The water inlet of the pressure pump 61 and the water outlet of the raw liquid pump 3 are communicated, a sixth valve 22 for opening and closing the communication is further arranged between the water inlet of the pressure pump 61 and the water outlet of the raw liquid pump 3, when the pressure filter module 62 is not required to be used for filtering, the second valve 25 can be closed, and substances needing to be pressurized can be filtered by the pressure filter module 62.
The implementation principle of the embodiment is as follows: when different substances are separated and detected, the raw liquid pump 3 leads the concentrated solution into the membrane separator 2, the membrane separators 2 with different molecular weights are used for filtering the different substances, sampling detection is carried out through the sampling valve 24, and the residual substances which do not need to be sampled enter the concentration tank 1 through the other filtering port of the membrane separator 2 and the concentrated solution outlet. When the interior of the membrane separator 2 needs to be cleaned, the cleaning pump 42 firstly introduces clean water in the cleaning tank into the ultrafiltration membrane group 5 for filtering, filtered filtrate continuously flows into the cleaning tank, the filtered liquid is introduced into the membrane separator 2 for washing after all filtering, and the washed liquid enters the concentration tank 1. When the pressure is needed, the concentrated solution in the raw solution pump 3 enters the pressure pump 61, the pressure pump 61 drives the concentrated solution to enter the pressure filtering module 62 for filtering, and the filtered concentrated solution still enters the concentration tank 1.
The embodiments of the present invention are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a special membrane separation system of multiple trapped molecular weight laboratory of integral type which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the concentrating box (1) is used for containing a concentrated solution;
the membrane separators (2) have different molecular weights, and concentrated solution outlets of the membrane separators (2) are communicated with the concentrating tank (1);
the water inlet of the raw liquid pump (3) is connected with the concentration tank (1), and the water outlet of the raw liquid pump (3) is respectively communicated with the concentrated liquid inlet of the membrane separator (2);
a sampling valve (24) is arranged at a filtrate outlet at one end of the membrane separator (2).
2. The integrated multi-molecular-cut-off laboratory specific membrane separation system according to claim 1, wherein: and the concentrated solution inlets of the membrane separators (2) are provided with first valves (21).
3. The integrated multi-molecular-cut-off laboratory-specific membrane separation system according to claim 1, wherein: a second valve (25) is arranged at a filtrate outlet of the membrane separator (2) far away from the sampling valve (24), and one end of the second valve (25) far away from the membrane separator (2) is communicated with the concentrating tank (1).
4. The integrated multi-molecular-cut-off laboratory specific membrane separation system according to claim 1, wherein: the membrane separator is characterized by further comprising a backwashing mechanism (4) for cleaning the membrane separator (2), wherein the backwashing mechanism (4) comprises a cleaning water tank (41) and a cleaning pump (42) connected to the cleaning water tank (41), and a water outlet of the cleaning pump (42) can be communicated with one end, far away from the membrane separator (2), of the first valve (21).
5. The integrated multi-molecular-cut-off laboratory specific membrane separation system according to claim 4, wherein: the back flush mechanism (4) still are connected with ultrafiltration membrane group (5) that carry out the filtration to the liquid in wasing water tank (41), the delivery port of scavenging pump (42) and the concentrate entry intercommunication of ultrafiltration membrane group (5), the filtrate export of ultrafiltration membrane group (5) and wasing water tank (41) intercommunication, be provided with third valve (51) between the concentrate entry of ultrafiltration membrane group (5) and scavenging pump (42).
6. The integrated multi-molecular-cut-off laboratory specific membrane separation system according to claim 5, wherein: the concentrated solution outlet of the ultrafiltration membrane group (5) is also communicated with the cleaning water tank (41), and a fourth valve (53) is arranged at the concentrated solution outlet of the ultrafiltration membrane group (5).
7. The integrated multi-molecular-cut-off laboratory specific membrane separation system according to claim 5, wherein: and a fifth valve (54) for opening and closing the circuits of the third valve (51) and the first valve (21) is arranged between the third valve and the first valve.
8. The integrated multi-molecular-cut-off laboratory specific membrane separation system according to claim 7, wherein: the delivery port of stock solution pump (3) still is connected with the pressure filtration mechanism, the pressure filtration mechanism includes force (61) pump and connects in the pressure filtration module (62) of the delivery port of force (61), the concentrate export and the filtrate export of pressure filtration module (62) all communicate with concentrate tank (1), the water inlet of force (61) and the delivery port intercommunication of stock solution pump (3), be provided with sixth valve (22) between force (61) pump and stock solution pump (3), the concentrate exit of pressure filtration module (62) sets up first valve (21), the filtrate exit of pressure filtration module (62) sets up second valve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223320647.1U CN218741284U (en) | 2022-12-09 | 2022-12-09 | Integrated membrane separation system special for various molecular weight cut-off laboratories |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223320647.1U CN218741284U (en) | 2022-12-09 | 2022-12-09 | Integrated membrane separation system special for various molecular weight cut-off laboratories |
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| CN218741284U true CN218741284U (en) | 2023-03-28 |
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| CN202223320647.1U Active CN218741284U (en) | 2022-12-09 | 2022-12-09 | Integrated membrane separation system special for various molecular weight cut-off laboratories |
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