CN216909888U

CN216909888U - Trace tangential flow plate type membrane test equipment

Info

Publication number: CN216909888U
Application number: CN202123416334.1U
Authority: CN
Inventors: 刘淑华; 崔峰; 秦庆洪; 马凯
Original assignee: Shandong Bona Biotechnology Group Co ltd
Current assignee: Shandong Bona Biotechnology Group Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-08
Anticipated expiration: 2031-12-31

Abstract

The utility model belongs to the technical field of membrane filtration equipment, and provides a micro tangential flow plate type membrane test device which comprises a test board, wherein a case is arranged on the test board, a micro pump and a power supply are arranged in the case, the output end of the micro pump is connected with a test mould through a pump pipe, the test mould comprises an upper mould and a lower mould, a plate type groove for placing a membrane to be tested is arranged between the upper mould and the lower mould, a blind hole is formed in the bottom of the upper mould, a liquid permeation pipe communicated with the blind hole is arranged on the side surface of the upper mould, a pair of sinking grooves are formed in the lower mould, uniform distributors are arranged in the sinking grooves, the tops of the uniform distributors are opposite to the bottoms of the membranes to be tested, one of the uniform distributors is communicated with the pump pipe, a discharge pipe is arranged at the end part of the other uniform distributor, a flow meter is arranged on the discharge pipe, a pressure regulating valve is arranged at the end part of the discharge pipe, and a discharge joint is arranged on one side of the pressure regulating valve. The device has the advantages of reasonable design, simple structure, higher test accuracy and stronger practicability, and is suitable for large-scale popularization.

Description

Trace tangential flow plate type membrane test equipment

Technical Field

The utility model belongs to the technical field of membrane filtration equipment, and particularly relates to micro tangential flow plate type membrane test equipment.

Background

The membrane filtration is a solid-liquid separation technology, which uses membrane pores to filter water and intercept impurities in the water, and belongs to a physical separation method. The filtration membranes are classified by the size of the intercepted raw water particles, and the membrane pores are divided into microfiltration Membranes (MF), ultrafiltration membranes (UF), nanofiltration membranes (NF) and reverse osmosis membranes (RO) from coarse to fine. All manufacturers producing the filtering membrane need to test the performance of the membrane in a certain quantity, and need to use equipment special for testing the performance of the membrane, and place the equipment on the equipment to test the use condition of the membrane under the conditions of different temperatures, pressures, flow rates and the like.

Most of the existing membrane test equipment is used for carrying out filtration test on a tubular filter membrane and cannot be suitable for a plate-type membrane. Although some devices can test the plate-type membrane, the practical applicability of the devices needs to be improved because the working flow rate is large, the consumption of the fluid medium is large, and the error is large.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems of the membrane test equipment, the utility model provides the micro tangential flow plate type membrane test equipment which is reasonable in design, simple in structure, higher in test accuracy and higher in practicability.

In order to achieve the above purpose, the utility model adopts the technical scheme that the micro tangential flow plate type membrane testing device comprises a testing table, a case is arranged on the testing table, a micro pump and a power supply are arranged inside the case, the input end and the output end of the micro pump are both positioned outside the case, the output end of the micro pump is provided with a pump pipe, the output end of the pump pipe is provided with a testing mold, the testing mold is arranged on the testing table and comprises an upper mold and a lower mold, a plate type groove for placing a membrane to be tested is arranged between the upper mold and the lower mold, the bottom of the upper mold is provided with a blind hole, the side surface of the upper mold is provided with a permeation liquid pipe communicated with the blind hole, the lower mold is provided with a pair of sinking grooves distributed on the two sides of the plate type groove, a uniform distributor is arranged in the sinking grooves, the top of the uniform distributor is opposite to the bottom of the membrane to be tested, one of them equipartition ware and pump line intercommunication, the tip of another equipartition ware is provided with row material pipe, arrange the material pipe and be located the outside of test mould and be provided with the flowmeter on its delivery path, the tip of arranging the material pipe is provided with the air-vent valve, one side of air-vent valve is provided with row material and connects.

Preferably, the uniform distributor comprises strip-shaped blocks, a plurality of vertical holes distributed along the length direction of the strip-shaped blocks are formed in the strip-shaped blocks, the strip-shaped blocks are arranged at positions close to the upper portions of the sunken grooves, and the lower portions of the strip-shaped blocks are communicated with transverse holes formed in the side face of the lower die.

Preferably, the bottom of the upper die is provided with a plurality of internally and externally nested circular bulges, the top of the lower die is provided with a circular groove matched with the circular bulges, the sinking groove is arranged on the lower die and is positioned on the inner side of the circular groove, and the upper die and the lower die are vertically connected through a plurality of bolts.

Preferably, the inside of the case is provided with a frequency conversion module electrically connected with the micropump, the frequency conversion module, the micropump and the power supply are all arranged on different side walls of the case, the micropump is arranged on the front side wall of the case, and the input end and the output end of the micropump are horizontally distributed relatively.

Preferably, the bottom of the test platform is provided with a plurality of cushion blocks.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. according to the micro tangential flow plate type membrane testing equipment, a micro pump is adopted to pump a micro medium to be filtered into the testing mould, the medium to be filtered can pass through the surface of the filtering membrane in a tangential direction through the uniform distributor to realize filtering, the requirement of micro testing can be met, and the equipment is small in space volume, simple in structure and high in space utilization rate. The device has the advantages of reasonable design, simple structure, higher test accuracy and stronger practicability, and is suitable for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is an isometric view of a micro tangential flow plate membrane test apparatus provided by an embodiment;

FIG. 2 is a front view of a micro tangential flow plate type membrane test device provided by an embodiment;

FIG. 3 is an exploded view of a test mold, a film to be tested, and a spreader according to an embodiment;

in the above figures, 1, a test bench; 2. a chassis; 3. a micro pump; 4. a power source; 5. a pump tube; 6. testing the mold; 61. an upper die; 611. blind holes; 62. a lower die; 621. a plate-type groove; 622. sinking a groove; 623. a circular groove; 63. a uniform distributor; 631. a strip-shaped block; 632. a vertical hole; 7. a discharge pipe; 8. a flow meter; 9. a pressure regulating valve; 10. a discharge connection; 11. a frequency conversion module; 12. buffering cushion blocks; 13. a membrane to be tested; 14. a permeate tube.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

In the embodiment, as shown in fig. 1, fig. 2 and fig. 3, the micro tangential flow plate type membrane testing apparatus provided by the present invention includes a testing table 1, a case 2 is disposed on the testing table 1, a micro pump 3 and a power supply 4 are disposed inside the case 2, an input end and an output end of the micro pump 3 are both located outside the case 2, an output end of the micro pump 3 is provided with a pump pipe 5, an output end of the pump pipe 5 is provided with a testing mold 6, the testing mold 6 is disposed on the testing table 1, the testing mold 6 includes an upper mold 61 and a lower mold 62, a plate-type groove 621 for placing a membrane 13 to be tested is disposed between the upper mold 61 and the lower mold 62, a blind hole 611 is disposed at the bottom of the upper mold 61, a permeate pipe 14 communicated with the blind hole 611 is disposed on a side surface of the upper mold 61, a pair of sink grooves 622 distributed on both sides of the plate-type groove 621 is disposed on the lower mold 62, an equipartition device 63 is disposed in the sink groove 622, a top of the equipartition device 63 is opposite to the bottom of the membrane 13 to be tested, one of the uniform distributors 63 is communicated with the pump pipe 5, the end part of the other uniform distributor 63 is provided with a discharge pipe 7, the discharge pipe 7 is positioned outside the test mold 6, a flow meter 8 is arranged on a conveying path of the discharge pipe 7, the end part of the discharge pipe 7 is provided with a pressure regulating valve 9, and one side of the pressure regulating valve 9 is provided with a discharge joint 10. The power source 4 is used for supplying power to the micro pump 3, and the case 2 is provided with a switch button for controlling the power source 4 and the micro pump 3.

The working principle of the device is that a membrane 13 to be tested is flatly laid in a plate-type groove 621, an upper die 61 and a lower die 62 are assembled and locked, a micro pump 3 supplies a micro amount of liquid to be filtered to an uniform distributor 63 in a testing die 6 through a pump pipe 5, the liquid to be filtered tangentially flows to the other end of the membrane 13 to be tested from one end of the membrane 13 to be tested along the surface of the membrane under the uniform distribution action of the uniform distributor 63, the liquid of the liquid to be filtered passing through the membrane 13 to be tested is a permeable material, and the permeable material is discharged from a blind hole 611 and a permeable liquid pipe 14; the liquid which fails to pass through the membrane 13 to be tested is collected from the other distributor 63 into the sink 622 and flows towards the discharge pipe 7, and the pressure inside the system is controlled by the pressure regulating valve 9 until a stable flow is output at the discharge joint 10, and the flow in the discharge pipe 7 is detected by the flow meter 8. This device is come to squeeze into the micro through adopting micropump 3 and treats that filtering liquid just treats that filtering liquid can treat the surface of filtration membrane and realize filtering with the tangential flow through equipartition ware 63 through testing mold 6, can satisfy the needs of micro-test, and equipment space volume is less moreover, the structure is retrencied and space utilization is higher.

In order to improve the practicability of the distributor 63, the distributor 63 provided by the utility model comprises a strip block 631, wherein the strip block 631 is provided with a plurality of vertical holes 632 distributed along the length direction of the strip block 631, the strip block 631 is arranged at the upper position in the sinking groove 622, and the lower part of the strip block 631 is communicated with a transverse hole arranged on the side surface of the lower die 62. The test mold 6 is provided with two equipartition devices 63, wherein one equipartition device 63 is used for evenly distributing the liquid to be filtered entering the filtering membrane, and the other equipartition device 63 is provided with the other side of the filtering membrane and is used for discharging the liquid which does not pass through the filtering membrane after filtering into the discharging pipe 7. The uniform distributor 63 is suspended above the sink 622, and the lower part of the uniform distributor is used as a confluence channel of liquid, so that holes on the uniform distributor 63 can contact fluid media with average probability; the uniform distributor 63 adopts a porous structure, and the distribution rule of the porous structure is favorable for ensuring the uniform distribution effect of the porous structure on liquid, so that the accuracy and the reliability of the performance test on the filtering membrane are improved.

In order to improve the sealing performance of the test mold 6, the bottom of the upper mold 61 is provided with a plurality of inward and outward nested circular protrusions (not shown in the figure), the top of the lower mold 62 is provided with a circular groove 623 matched with the circular protrusions, the sinking groove 622 is arranged on the lower mold 62 and is positioned on the inner side of the circular groove 623, and the upper mold 61 and the lower mold 62 are connected in a vertical penetrating manner through a plurality of bolts. By adopting the structure that the circular groove 623 is matched with the circular protrusion, the contact area between the upper die 61 and the lower die 62 can be increased, the flowing direction of escaping liquid can be effectively changed, and the escaping resistance of the escaping liquid can be increased, so that the upper die 61 and the lower die 62 have higher sealing performance, and the filtering performance of the filtering membrane can be fully exerted, and a higher-accuracy measuring result can be obtained.

In order to improve the testing performance of the device, the frequency conversion module 11 electrically connected with the micro pump 3 is arranged in the case 2. The pumping-out flow of the micro pump 3 can be adjusted by arranging the frequency conversion module 11, so that the test requirements of different micro volumes are met. Further, the frequency conversion module 11, the micropump 3 and the power supply 4 are all arranged on different side walls of the case 2, the micropump 3 is arranged on the front side wall of the case 2, and the input end and the output end of the micropump are horizontally distributed relatively. The space utilization rate inside the case 2 is high, the stability of the case 2 in the working process is guaranteed, and particularly, the input equipment which is convenient to connect with a fluid medium and the pump pipe 5 which is convenient to connect with the testing mold 6 are designed at the input end and the output end of the micro pump 3.

In order to improve the stability of the device, a plurality of cushion blocks 12 are arranged at the bottom of the test platform.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. A micro tangential flow plate type membrane test device is characterized by comprising a test board, wherein a case is arranged on the test board, a micro pump and a power supply are arranged inside the case, the input end and the output end of the micro pump are positioned outside the case, a pump pipe is arranged at the output end of the micro pump, a test mold is arranged at the output end of the pump pipe and comprises an upper mold and a lower mold, a plate type groove for placing a membrane to be tested is arranged between the upper mold and the lower mold, a blind hole is arranged at the bottom of the upper mold, a liquid permeating pipe communicated with the blind hole is arranged on the side surface of the upper mold, a pair of sinking grooves distributed at two sides of the plate type groove are arranged on the lower mold, a uniform distributor is arranged in each sinking groove, the top of the uniform distributor is opposite to the bottom of the membrane to be tested, one of the uniform distributors is communicated with the pump pipe, the tip of another equipartition ware is provided with row material pipe, arrange the material pipe and be located the outside of test mould and be provided with the flowmeter on its delivery path, the tip of arranging the material pipe is provided with the air-vent valve, one side of air-vent valve is provided with row material and connects.

2. The micro-scale tangential flow plate type membrane testing equipment as claimed in claim 1, wherein the uniform distributor comprises a strip-shaped block, a plurality of vertical holes distributed along the length direction of the strip-shaped block are formed in the strip-shaped block, the strip-shaped block is arranged at a position close to the upper portion in the sinking groove, and the lower portion of the strip-shaped block is communicated with a transverse hole formed in the side face of the lower die.

3. The micro-quantity tangential flow plate type membrane testing equipment as claimed in claim 2, wherein the bottom of the upper die is provided with a plurality of internally and externally nested circular-shaped protrusions, the top of the lower die is provided with circular-shaped grooves matched with the circular-shaped protrusions, the sinking grooves are formed in the lower die and located on the inner sides of the circular-shaped grooves, and the upper die and the lower die are connected in a vertical penetrating manner through a plurality of bolts.

4. The micro tangential flow plate type membrane test device according to claim 3, wherein a frequency conversion module electrically connected with the micro pump is arranged inside the case, the frequency conversion module, the micro pump and the power supply are arranged on different side walls of the case, the micro pump is arranged on the front side wall of the case, and the input end and the output end of the micro pump are horizontally distributed oppositely.

5. The micro tangential flow plate type membrane test device according to claim 4, wherein the bottom of the test platform is provided with a plurality of cushion blocks.