CN210495952U

CN210495952U - Miniature tangential flow ultrafiltration system

Info

Publication number: CN210495952U
Application number: CN201921261691.5U
Authority: CN
Inventors: 吴晓斌; 王健; 卢铀忠
Original assignee: Guochu Technology Xiamen Co ltd
Current assignee: Guochu Technology Xiamen Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-05-12
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses a miniature tangential flow ultrafiltration system, which comprises an outer shell, be equipped with in the shell feed liquid circulating bath and with the feed liquid circulating bath, the circulating pump of membrane module intercommunication, be equipped with the membrane module on the shell, the membrane module includes ultrafiltration membrane piece and can dismantle last fixing device and the lower fixing device of connection in ultrafiltration membrane piece both sides, lower fixing device supports tightly with the shell, go up and set up on the fixing device with the communicating feed liquid import of circulating pump and with the communicating liquid export of holding back of feed liquid circulating bath, the filtrating export has been seted up to fixing device bottom down, go up fixing device and lower fixing device inside cavity and with the feed liquid import, hold back liquid export and filtrating export and communicate with each other. In the scheme, feed liquid is fed into a membrane component through a circulating pump to carry out cross flow filtration, small molecular substances are discharged after penetrating through an ultrafiltration membrane, and trapped liquid enters a feed liquid circulating groove to form circulation; because the feed liquid circulating groove and the circulating pump are both positioned in the shell, the circulating volume of the system is small, and the feed liquid amount is enough to support the normal operation of the ultrafiltration system.

Description

Miniature tangential flow ultrafiltration system

Technical Field

The utility model relates to a tangential flow filtration technical field, in particular to miniature tangential flow ultrafiltration system.

Background

Tangential flow refers to a form of filtration in which the direction of liquid flow is perpendicular to the direction of filtration. Tangential flow ultrafiltration membrane systems are currently very well adapted for use in a variety of industrial processes. The tangential flow filtration is characterized in that the flow direction of the material is vertical to the flow direction of the permeate and parallel to the ultrafiltration membrane, and the material is continuously and circularly washed on the surface of the membrane. Therefore, a certain amount of feed liquid is needed to ensure the normal operation of the system.

However, in scientific research institutions such as colleges and universities and research institutes, in research and development stage projects, the material quantity is small, the requirement of the tangential flow filtration equipment on the minimum feeding quantity cannot be met, and therefore the system cannot normally operate. Therefore, the research and development of a miniature tangential flow system with small circulation volume and sufficient feed liquid has great practical application significance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a miniature tangential flow ultrafiltration system, have the characteristics that the circulation is small, the feed liquid is sufficient, can support ultrafiltration system's normal operating to prior art exists.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a micro tangential flow ultrafiltration system comprises a shell, a feed liquid circulating groove for containing feed liquid is fixed in the shell, the upper surface of the shell is provided with a membrane component, a circulating pump communicated with the feed liquid circulating groove and the membrane component is fixed in the shell to convey feed liquid, the membrane component comprises an ultrafiltration membrane used for filtering, an upper fixing device and a lower fixing device are respectively arranged at the two sides of the ultrafiltration membrane, the lower fixing device is tightly propped against the upper surface of the shell, the upper fixing device and the lower fixing device are detachably connected to fix the ultrafiltration membrane, the upper fixing device is provided with a feed liquid inlet communicated with the circulating pump and a trapped liquid outlet communicated with the feed liquid circulating groove, the bottom of the lower fixing device is provided with a filtrate outlet, and the upper fixing device and the lower fixing device are hollow and communicated with the feed liquid inlet, the trapped liquid outlet and the filtrate outlet.

The utility model discloses further set up to, go up fixing device and all seted up corresponding screw hole on the fixing device down, screw hole female fit has the bolt.

The utility model discloses further set up to, the casing upper surface is seted up and is supplied bolt tip male jack.

The utility model discloses further set up to, go up fixing device and all seted up square groove on one side that lower fixing device is close to each other, the common gomphosis in the square groove has a square sealing washer, ultrafiltration membrane is located in the sealing washer.

The utility model discloses further set up to, install pressure regulating valve on holding back the liquid export, still install the manometer on the shell, the manometer is located between circulating pump and the membrane module.

The utility model discloses further set up as, still can dismantle in the shell be connected with the communicating permeate liquid receiving groove of filtrating export.

To sum up, the utility model discloses a beneficial technological effect does:

1. in the scheme, the feed liquid in the feed liquid circulating tank is sent into the membrane component by the circulating pump to be subjected to cross flow filtration, small molecular substances penetrate through the ultrafiltration membrane and are discharged through the filtrate outlet, other trapped liquid enters the feed liquid circulating tank through the trapped liquid outlet to form circulation, so that the feed liquid is continuously filtered, and the feed liquid circulating tank and the circulating pump are both arranged in the shell, and the membrane component is positioned on the shell, so that the occupied volume is small, the circulation volume is small, and the feed liquid amount is enough to support the normal operation of an ultrafiltration system;

2. according to the scheme, the upper fixing device and the lower fixing device are detachably connected by utilizing the threaded matching of the threaded hole and the bolt, the ultrafiltration membrane is fixed, and operators can clean and replace the ultrafiltration membrane regularly;

3. the scheme limits the flowing range of the feed liquid by utilizing the matching of the square groove and the sealing ring, improves the sealing property between the upper fixing device and the lower fixing device, prevents the feed liquid from leaking, and ensures the circulating operation of the feed liquid;

4. according to the scheme, the pressure of the feed liquid is monitored in real time by arranging the pressure gauge, and the pressure difference between two sides of the ultrafiltration membrane is timely adjusted by utilizing the pressure adjusting valve, so that the filtering efficiency of the membrane component is ensured, and the damage of the membrane component caused by overlarge pressure and the incapability of running of a system caused by overlow pressure are avoided;

5. this scheme still sets up the permeate liquid receiving groove and retrieves the permeate liquid that the filtrating export flows, has made things convenient for the recovery to filtrating, is favorable to the water economy resource.

Drawings

FIG. 1 is a schematic view of the flow structure of the present invention;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic sectional structure diagram of the middle membrane module of the present invention.

Reference numerals: 1. a housing; 11. a feed liquid circulating tank; 12. a circulation pump; 13. a pressure gauge; 14. a permeate receiving tank; 4. a pressure regulating valve; 5. a membrane module; 51. an upper fixing device; 511. a threaded hole; 512. a bolt; 513. a square groove; 514. a seal ring; 52. a lower fixing device; 53. an ultrafiltration membrane; 54. a feed liquid inlet; 55. a trapped fluid outlet; 56. and (6) a filtrate outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a micro tangential flow ultrafiltration system comprises a shell 1, a feed liquid circulation tank 11, a circulation pump 12 and a membrane module 5. The casing 1 is rectangular, made of stainless steel, has good corrosion resistance, and is hollow inside, and the feed liquid circulation tank 11 and the circulation pump 12 are installed inside the casing 1. The feed liquid circulation tank 11 is internally filled with feed liquid; the circulation pump 12 is installed between the feed liquid circulation tank 11 and the membrane module 5 and communicates with both to transport the feed liquid.

The membrane module 5 is mounted on the upper surface of the housing 1, and as shown in connection with fig. 3, the membrane module 5 includes an upper fixture 51, a lower fixture 52, and an ultrafiltration membrane 53. The upper fixing device 51 and the lower fixing device 52 are provided with a cavity at their sides close to each other, and the ultrafiltration membrane 53 is located in the cavity. And the upper fixing device 51 and the lower fixing device 52 are both provided with threaded holes 511, the threaded holes 511 of the upper fixing device 51 and the lower fixing device 52 are in one-to-one correspondence, and bolts 512 are matched with the threaded holes 511 in a threaded manner, so that the upper fixing device 51 and the lower fixing device 52 can be detachably connected. The housing 1 is provided with an insertion hole (not shown) for inserting the end of the bolt 512, and when the bolt 512 is inserted into the insertion hole, the lower surface of the lower fixing device 52 is tightly pressed against the upper surface of the housing 1. The side, close to each other, of the upper fixing device 51 and the lower fixing device 52 is provided with a corresponding square groove 513, a square sealing ring 514 is embedded in the square grooves 513 of the upper fixing device 51 and the lower fixing device 52 together, the sealing ring 514 is located in the sealing ring 514, the flowing range of the feed liquid is limited by the arrangement of the sealing ring 514, and the sealing performance between the upper fixing device 51 and the lower fixing device 52 is improved.

As shown in fig. 3, the upper fixing device 51 is provided with a feed liquid inlet 54 and a trapped liquid outlet 55, and the feed liquid inlet 54 and the trapped liquid outlet 55 are both communicated with the cavity. As shown in connection with fig. 1, feed liquid inlet 54 is in communication with circulation pump 12 for the entry of feed liquid. The trapped liquid outlet 55 is communicated with the feed liquid circulation tank 11 and is used for feeding the trapped liquid into the feed liquid circulation tank 11. A pressure gauge 13 is further installed between the feed liquid inlet 54 and the circulating pump 12, and the pressure gauge 13 is fixed on the shell 1 (see fig. 2) and used for monitoring the pressure of the feed liquid. The trapped fluid outlet 55 is also provided with a pressure regulating valve 4, so that an operator can timely regulate the pressure difference on two sides of the ultrafiltration membrane 53, thereby ensuring the filtration efficiency of the membrane module 5 and avoiding the damage of the membrane module 5 caused by overlarge pressure and the incapability of running of the system caused by overlow pressure.

As shown in fig. 3, a filtrate outlet 56 is formed at the bottom of the lower fixing device 52 for allowing the filtrate penetrating through the ultrafiltration membrane 53 to flow out, and as shown in fig. 1, the filtrate outlet 56 is communicated with the permeate receiving groove 14, and the permeate receiving groove 14 is located in the housing 1 (see fig. 2) for recovering the filtrate.

When the membrane module is used in the embodiment, the feed liquid in the feed liquid circulation tank 11 is sent into the membrane module 5 through the circulation pump 12 for cross flow filtration, and when the feed liquid flows on the ultrafiltration membrane 53, due to the pressure difference between the two sides of the ultrafiltration membrane 53, the small molecular substances penetrate through the ultrafiltration membrane 53 and enter the permeate receiving tank 14 through the filtrate outlet 56 for collection; other trapped liquid enters the feed liquid circulating groove 11 through a trapped liquid outlet 55 to form circulation, so that the feed liquid is continuously filtered.

In the scheme, the feed liquid circulating tank 11 and the circulating pump 12 are both arranged in the shell 1, and the membrane component 5 is positioned on the shell 1, so that the occupied volume is small, the circulating volume is small, and the feed liquid amount is enough to support the normal operation of an ultrafiltration system.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a miniature tangential flow ultrafiltration system, includes shell (1), shell (1) internal fixation has feed liquid circulation groove (11) that hold the feed liquid, be equipped with membrane module (5), characterized by on shell (1) upper surface: the device comprises a shell (1), wherein a circulating pump (12) communicated with a feed liquid circulating groove (11) and a membrane assembly (5) is fixed in the shell (1) to convey feed liquid, the membrane assembly (5) comprises an ultrafiltration membrane (53) for filtering, an upper fixing device (51) and a lower fixing device (52) are respectively arranged on two sides of the ultrafiltration membrane (53), the lower fixing device (52) is tightly abutted to the upper surface of the shell (1), the upper fixing device (51) and the lower fixing device (52) are detachably connected to fix the ultrafiltration membrane (53), a feed liquid inlet (54) communicated with the circulating pump (12) and a liquid interception outlet (55) communicated with the feed liquid circulating groove (11) are formed in the upper fixing device (51), a filtrate outlet (56) is formed in the bottom of the lower fixing device (52), the upper fixing device (51) and the lower fixing device (52) are hollow inside and are communicated with the feed liquid inlet (54), The trapped liquid outlet (55) is communicated with the filtrate outlet (56).

2. The micro tangential flow ultrafiltration system of claim 1, wherein: corresponding threaded holes (511) are formed in the upper fixing device (51) and the lower fixing device (52), and bolts (512) are matched with the inner threads of the threaded holes (511).

3. The micro tangential flow ultrafiltration system of claim 2, wherein: the upper surface of the shell (1) is provided with a jack for inserting the end part of the bolt (512).

4. The micro tangential flow ultrafiltration system of claim 1, wherein: go up fixing device (51) and all seted up square groove (513) on the one side that lower fixing device (52) are close to each other, square groove (513) are interior to have a square sealing washer (514) of gomphosis jointly, ultrafiltration membrane (53) are located sealing washer (514).

5. The micro tangential flow ultrafiltration system of claim 1, wherein: install pressure regulating valve (4) on entrapment liquid outlet (55) mouth, still install manometer (13) on shell (1), manometer (13) are located between circulating pump (12) and membrane module (5).

6. The micro tangential flow ultrafiltration system of claim 1, wherein: a permeate receiving tank (14) which is communicated with the filtrate outlet (56) can be detachably connected in the shell (1).