CN210119420U - Diffusion device for film permeability test - Google Patents
Diffusion device for film permeability test Download PDFInfo
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- CN210119420U CN210119420U CN201920560050.3U CN201920560050U CN210119420U CN 210119420 U CN210119420 U CN 210119420U CN 201920560050 U CN201920560050 U CN 201920560050U CN 210119420 U CN210119420 U CN 210119420U
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Abstract
The utility model provides a simple structure, installation, convenient operation occupy the small diffusion equipment that is used for film permeability to test. The diffusion device comprises a first diffusion pool, a second diffusion pool and a mounting mechanism for mounting a film, wherein the first diffusion pool and the second diffusion pool are respectively provided with a limiting structure for limiting the mounting mechanism, and when the first diffusion pool is combined with the second diffusion pool, the limiting structure of the first diffusion pool is matched with the limiting structure of the second diffusion pool, and the mounting mechanism is limited between the first diffusion pool and the second diffusion pool.
Description
Technical Field
The utility model relates to a film permeability test field specifically relates to a diffusion equipment for film permeability test.
Background
The following background is provided to aid the reader in understanding the present invention and is not admitted to be prior art.
The membrane permeability test is used to detect the rate of small molecule substances passing through the membrane. The diffusion device for membrane permeability test comprises a supply cell and a receiving cell, each having a respective opening. Before testing, the supply pool and the receiving pool are connected, the opening of the supply pool is aligned with the opening of the receiving pool, the film to be tested is clamped between the opening of the supply pool and the opening of the receiving pool, and then solutions with different concentrations of small molecular substances are respectively added into the supply pool and the receiving pool. Since the concentrations of the small molecular substances in the solutions in the supply reservoir and the receiving reservoir are different, the small molecular substances permeate through the thin film to be measured and diffuse from the high-concentration supply reservoir to the low-concentration receiving reservoir. The permeability of the film to be tested can be tested by regularly detecting the concentration of the micromolecular substance in the receiving pool.
There are several problems in membrane permeability testing using existing diffusion devices: 1. when the film to be measured is installed, the film to be measured, the supply pool opening and the receiving pool opening need to be aligned, and operation is inconvenient; 2. because the thickness of the film to be tested is generally small, the film to be tested is easy to move, wrinkle or fold in the installation or test process, and the test result is inaccurate; 3. the supply tank and the receiving tank are often connected by a clip, which may result in a large volume occupied by the diffusion device as a whole or insufficient clamping force. Therefore, the diffusion device needs to be designed to facilitate the installation of the film to be tested, and the wrinkles of the film installed on the diffusion device are reduced, so that the test result is more accurate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, installation, convenient operation occupy the small diffusion equipment that is used for film permeability to test.
A diffusion device for a membrane permeability test comprises a first diffusion pool, a second diffusion pool and a mounting mechanism, wherein the first diffusion pool, the second diffusion pool and the mounting mechanism are detachably combined, the first diffusion pool and the second diffusion pool are respectively provided with a limiting structure for limiting the mounting mechanism, and when the first diffusion pool is combined with the second diffusion pool, the limiting structure of the first diffusion pool is matched with the limiting structure of the second diffusion pool, and the mounting mechanism is limited between the first diffusion pool and the second diffusion pool.
Further, the first diffusion pool is provided with a first contact surface which is used for being in contact with the second diffusion pool, the limiting structure of the first diffusion pool is a first groove which is arranged on the first contact surface, and when the mounting mechanism is combined with the first diffusion pool, the mounting mechanism is clamped in the first groove. Preferably, when the mounting mechanism is combined with the first diffusion cell, the mounting mechanism is in clearance fit or interference fit with the first groove.
Furthermore, the second diffusion pool is provided with a second contact surface which is used for being in contact with the first diffusion pool, the limiting structure of the second diffusion pool is a second groove which is arranged on the second contact surface, and when the mounting mechanism is combined with the second diffusion pool, the mounting mechanism is clamped in the second groove. Preferably, when the mounting mechanism is combined with the second diffusion cell, the mounting mechanism is in clearance fit or interference fit with the second groove.
Further, installation mechanism is including dismantling first press mold board and the second press mold board of connection, and the second press mold board has the third recess, and when first press mold board and second press mold board were assembled, first press mold board joint was in the third recess. When the first film pressing plate is combined with the second film pressing plate, the film can be installed between the first film pressing plate and the second film pressing plate. Preferably, when the first lamination plate and the second lamination plate are combined, the first lamination plate is in clearance fit or interference fit with the third groove. Preferably, the first lamination plate has a first opening for exposing the film, the second lamination plate has a second opening for exposing the film, and the first opening is aligned with the second opening when the first lamination plate and the second lamination plate are combined.
Further, when the mounting mechanism is combined with the second diffusion cell, the limiting structure of the second diffusion cell is connected with the second film pressing plate; when the first diffusion pool is combined with the mounting mechanism, the limiting structure of the first diffusion pool is connected with the first film pressing plate, or the limiting structure of the first diffusion pool is connected with the second film pressing plate. Preferably, when the mounting mechanism is combined with the second diffusion cell, the second groove is clamped with the second film pressing plate; when the first diffusion cell is combined with the mounting mechanism, the first groove is clamped with the first film pressing plate, or the first groove is clamped with the second film pressing plate.
Further, the first film pressing plate is provided with a first section used for being connected with the limiting structure of the first diffusion pool and a second section used for being clamped with the third groove. Preferably, the first section is snap-fitted into the first recess.
Furthermore, a notch is formed in the outer wall of the first film pressing plate, and when the first film pressing plate is combined with the second film pressing plate, the notch is exposed out of the third groove.
Further, when the limiting structure of the first diffusion cell is connected with the first film pressing plate, the notch is exposed out of the limiting structure. Preferably, when the first film pressing plate is clamped in the first groove, the notch is exposed out of the first groove. Preferably, the first contact surface is provided with a through slot for exposing the recess.
Furthermore, two notches are arranged, and the symmetry axes of the two notches and the center line of the first film pressing plate are positioned on the same straight line; or, the notches are distributed on the outer wall of the first film pressing plate at equal intervals. Preferably, the through groove is communicated with the first groove. Preferably, the through grooves and the notches are the same in number.
Furthermore, the diffusion device also comprises an outer frame for accommodating the first diffusion pool and the second diffusion pool and a mandril for abutting against the first diffusion pool or the second diffusion pool, and the outer frame is provided with a through hole for inserting the mandril; or the first diffusion pool is provided with a first screw hole for inserting the screw rod, and the second diffusion pool is provided with a second screw hole which is aligned with the first screw hole. Preferably, a fixing seat is arranged on the first diffusion pool or the second diffusion pool, and a hole for inserting the ejector rod is formed in the fixing seat. Preferably, the first diffusion cell and the second diffusion cell are both connected with the outer frame in a sliding manner. Preferably, the first diffusion cell and the second diffusion cell are respectively provided with a respective sliding block, the outer frame is provided with an opening for accommodating the sliding block, and when the first diffusion cell and the second diffusion cell are placed into the outer frame, the sliding blocks of the first diffusion cell and the second diffusion cell are in sliding connection with the opening.
When the film is installed, firstly, a first film pressing plate and a second film pressing plate are combined, and the film is limited between the first film pressing plate and the second film pressing plate, so that the first film pressing plate, the film and the second film pressing plate form a whole; then aligning the mounting mechanism with a first groove of the first diffusion cell, and clamping the mounting mechanism part in the first groove; the second recess is then aligned with the mounting means, the first diffusion cell and the second diffusion cell are combined, and the mounting means is defined between the first diffusion cell and the second diffusion cell, or the mounting means is defined in the cavity formed by the first recess and the second recess.
The utility model has the advantages that:
1. the limiting structure can facilitate the alignment of the mounting mechanism and the first diffusion pool/the second diffusion pool, and plays a limiting role in the mounting mechanism before the first diffusion pool and the second diffusion pool are combined, so that the assembly efficiency of the diffusion device is improved, and the convenience of the diffusion device is increased.
2. Installation mechanism is including dismantling first pressure membrane board and the second pressure membrane board of connection, and first pressure membrane board joint is located the film relatively fixed between first pressure membrane board and the second pressure membrane board in the third recess of second pressure membrane board, avoids the film to produce folding or fold in the installation, improves the accuracy of test.
Drawings
Fig. 1 is an overall outline view of a horizontal diffusion device according to an embodiment of the present invention.
Fig. 2 is an assembled cross-sectional view of a first diffusion cell, a second diffusion cell, and a mounting mechanism of a horizontal diffusion apparatus according to an embodiment of the present invention.
Fig. 3 is a perspective view of a first diffusion cell of the horizontal diffusion apparatus of fig. 1.
Fig. 4 is a view of the horizontal diffusion device of fig. 1 with a first diffusion cell and a first squeeze film plate.
Fig. 5 is a perspective view of a second diffusion cell of the horizontal diffusion device of fig. 1.
Fig. 6 is a view of the horizontal diffusion device of fig. 1 with a second diffusion cell mated to a second squeeze film plate.
Fig. 7 is an assembled perspective view of a mounting mechanism in an embodiment of the invention.
FIG. 8 is an exploded view of the mounting mechanism of FIG. 4.
Fig. 9 is a diagram of the combination of the outer frame with the first diffusion cell and the second diffusion cell in an embodiment of the present invention.
Fig. 10 is an overall external view of a vertical diffusion device according to an embodiment of the present invention.
Fig. 11 is an assembled cross-sectional view of the first diffusion cell, the second diffusion cell, and the mounting mechanism of the neutral diffusion device of fig. 10.
Fig. 12 is a perspective view of a first diffusion cell of the neutral diffusion apparatus of fig. 10.
Fig. 13 is a view of the first diffusion cell of the neutral diffusion apparatus of fig. 10 in cooperation with a first squeeze film plate.
Fig. 14 is a perspective view of a second diffusion cell of the neutral diffusion apparatus of fig. 10.
Fig. 15 is a view of the second diffusion cell of the neutral diffusion apparatus of fig. 10 in cooperation with a second squeeze film plate.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
The first diffusion cell and the second diffusion cell are two cell bodies of the diffusion device for containing diffusion fluid, the diffusion fluid refers to fluid containing small molecules, and the permeability is measured by the speed of the small molecules passing through the membrane. When a membrane permeability test is carried out, one of the two tank bodies is used for containing fluid with higher concentration of small molecule substances and the tank body is used as a supply tank; the other of the two tank bodies is used for containing fluid with lower concentration of small molecule substances, and the tank body is used as a receiving tank. The first diffusion tank and the second diffusion tank are provided with respective openings, after the two tank bodies are connected, the membrane is positioned between the first diffusion tank opening and the second diffusion tank opening, and the small molecule substances flow from the supply tank to the receiving tank through the membrane. The supply reservoir and the receiving reservoir may be of a relative concept, depending on the relative concentration of small molecule species in the fluid contained in the reservoir during the assay. Thus, in some cases, the functions of the first diffusion cell and the second diffusion cell may be interchanged.
The first diffusion cell and the second diffusion cell are generally arranged in two ways: one in a side-by-side arrangement and the other in a top-to-bottom stacked arrangement. The diffusion devices formed side-by-side are horizontal diffusion devices, which are commonly used to measure the permeability of non-gaseous small molecule species through membranes. The diffusion devices formed in a stacked arrangement above one another are vertical diffusion devices, which are commonly used to detect the permeability of gases through membranes.
A diffusion device for a permeability test of a membrane, as shown in figures 1 and 2 or figures 10 and 11, comprises a first diffusion cell 1, a second diffusion cell 2 and a mounting mechanism for mounting the membrane, which are detachably combined, wherein the first diffusion cell 1 and the second diffusion cell 2 are respectively provided with a limiting structure for limiting the mounting mechanism, when the first diffusion cell 1 is combined with the second diffusion cell 2, the first diffusion cell 1 and the second diffusion cell 2 are arranged side by side or stacked up and down, and the limiting structure of the first diffusion cell 1 is matched with the limiting structure of the second diffusion cell 2 to limit the mounting mechanism between the first diffusion cell 1 and the second diffusion cell 2. The detachable combination of the first diffusion pool, the second diffusion pool and the mounting mechanism means that the first diffusion pool and the second diffusion pool are detachably combined, the first diffusion pool and the mounting mechanism are detachably combined, and the mounting mechanism and the second diffusion pool are detachably combined.
As shown in fig. 3 and 4 or fig. 12 and 13, the first diffusion cell 1 has a first contact surface for contacting with the second diffusion cell, the limiting structure of the first diffusion cell is a first groove 101 disposed on the first contact surface, and when the mounting mechanism 3 is combined with the first diffusion cell 1, the mounting mechanism 3 is clamped in the first groove 101. When the mounting mechanism 3 is combined with the first diffusion cell 1, the mounting mechanism 3 may be in interference fit with the first groove 101. An interference fit refers to a fit having an interference, and the minimum interference may be equal to zero. For example, the mounting mechanism is an elastic member, and the mounting mechanism elastically deforms when being clamped in the first groove, so that the mounting mechanism is limited in the first groove. Alternatively, the mounting mechanism may be a clearance fit with the first recess. A clearance fit refers to a fit having a clearance, and the minimum clearance may be equal to zero. No matter interference fit or clearance fit, installation mechanism joint back in first recess, installation mechanism can with first recess fixed connection, can not take place relative rotation or removal relatively first recess.
As shown in fig. 5 and 6 or fig. 14 and 15, the second diffusion cell 2 has a second contact surface for contacting with the first diffusion cell, the limiting structure of the second diffusion cell is a second groove 201 arranged on the second contact surface, and when the mounting mechanism 3 is combined with the second diffusion cell 2, the mounting mechanism 3 is clamped in the second groove 201. Similar to the combination of the mounting mechanism and the first diffusion cell, when the mounting mechanism 3 is combined with the second diffusion cell 2, the mounting mechanism 3 is in clearance fit or interference fit with the second groove 201.
The first groove facilitates the alignment of the mounting mechanism and the first diffusion cell, and the second groove facilitates the alignment of the mounting mechanism and the second diffusion cell, so that the diffusion device is more convenient to assemble. In addition, because the limiting structure of the first diffusion cell and the limiting structure of the second diffusion cell are grooves, when the first diffusion cell and the second diffusion cell are connected, the first groove and the second groove jointly form a cavity for accommodating the mounting mechanism, the cavity is matched with the appearance of the mounting mechanism and plays a limiting role on the mounting mechanism, and the mounting mechanism is prevented from moving or rotating in the mounting and testing processes.
In some embodiments, as shown in fig. 7 and 8, mounting mechanism 3 comprises first lamination plate 301 and second lamination plate 302 detachably connected, and second lamination plate 302 has third recess 3021, and when first lamination plate 301 and second lamination plate 302 are combined, first lamination plate 301 snaps into third recess 3021. When the first film pressing plate is combined with the second film pressing plate, the film can be installed between the first film pressing plate and the second film pressing plate. Set up like this and avoid relative rotation or relative displacement between first pressure membrane board and the second pressure membrane board, avoid dropping between two pressure membrane boards of film on the one hand, on the other hand avoids the film to produce the fold even damaged. After the first film pressing plate and the second film pressing plate are combined, the film between the first film pressing plate and the second film pressing plate forms a whole, so that the film and the whole installation mechanism can be conveniently placed into a cavity formed by the first diffusion pool and the second diffusion pool.
In some embodiments, the first lamination plate 301 is a clearance or interference fit with the third recess 3021 when the first lamination plate 301 and the second lamination plate 302 are combined. For example, the first film pressing plate is an elastic piece, and the first film pressing plate is elastically deformed when being clamped in the third groove, so that the first film pressing plate is in interference fit with the third groove. As shown in fig. 7 and 8, the first lamination plate 301 has a first opening 3011 for film exposure, the second lamination plate 302 has a second opening 3022 for film exposure, and when the first lamination plate 301 and the second lamination plate 302 are combined, the first opening 3011 is aligned with the second opening 3022. After the film is mounted to the mounting mechanism, one surface of the film is exposed through the first opening 3011 and the other surface of the film is exposed through the second opening 3022. After the mounting mechanism is combined with the first diffusion cell and the diffusion cell, the first opening 3011, the second opening 3022, the first diffusion cell opening 102, and the second diffusion cell opening 202 are aligned.
The installation mechanism comprises a first film pressing plate and a second film pressing plate, and the first film pressing plate and the second film pressing plate are combined in a mode that the first film pressing plate is clamped in a third groove of the second film pressing plate. In this case, the first diffusion cell is combined with the mounting mechanism in the following ways: in the first mode, the first groove 101 is clamped with the first film pressing plate 301. That is, the first squeeze film plate has a first section and a second section, the first section is used for being clamped in the first groove to realize the combination of the first squeeze film plate and the first diffusion cell, and the second section is clamped in the third groove to realize the combination of the first squeeze film plate and the second squeeze film plate, for example, as shown in fig. 11. In the second mode, the first groove is clamped with the second film pressing plate. In the second combination mode, since the mounting mechanism is to be combined not only with the first diffusion cell but also with the second diffusion cell, the second squeeze film plate needs to be connected to both the first diffusion cell and the second diffusion cell. That is, the second pressure membrane plate is provided with a third section and a fourth section, the third section is used for being clamped in the first groove to realize the combination of the mounting mechanism and the first diffusion pool, and the fourth section is used for being clamped in the second groove to realize the combination of the mounting mechanism and the second diffusion pool.
In some embodiments, as shown, for example, in fig. 7 and 8, a notch 3012 is provided on the outer wall of the first lamination plate 301, and when the first lamination plate is combined with the second lamination plate, the notch 3012 is exposed from the third groove 3021.
In some embodiments, as shown in fig. 4 or 13, when the first lamination plate 301 is snapped into the first groove 101, the notch 3012 is exposed from the first groove 101. A through slot 103 is provided on the first contact surface for exposing the recess 3012. The notch has the following two functions: the first function is used for separating the first lamination plate from the second lamination plate. When the first film pressing plate and the second film pressing plate are combined, the first film pressing plate is clamped in the third groove; when separating first pressure membrane board and second pressure membrane board, can insert the notch with the inserted bar, prize out first pressure membrane board from the third recess to realize the separation of first pressure membrane board and second pressure membrane board. The second function is used for separating the first film pressing plate from the first diffusion cell. The mode of combination installation mechanism and first diffusion cell is with first press mold board joint in first recess, when needing to separate installation mechanism and first diffusion cell, can insert the notch with the inserted bar, prizes out first press mold board from first recess, realizes the separation of first press mold board and first diffusion cell.
In some embodiments, as shown in fig. 3 or 12, the through slot 103 is in communication with the first recess 101. The through slots 103 are the same number as the notches 3012.
In some embodiments, there are two notches 3012, and the symmetry axes of the two notches 3012 are located on the same line as the centerline of the first lamination plate 301, for example as shown in fig. 3; or, the notches are distributed on the outer wall of the first film pressing plate at equal intervals.
Horizontal diffusion device
FIGS. 1 to 6 show horizontal diffusion devices in which a first diffusion cell and a second diffusion cell are combined and arranged side by side. In some embodiments, as shown in fig. 1, the diffusion device further comprises an outer frame 4 for accommodating the first diffusion cell 1 and the second diffusion cell 2, and a mandrel 5 for abutting against the first diffusion cell or the second diffusion cell, wherein the outer frame 4 is provided with a through hole for inserting the mandrel, for example, as shown in fig. 4. The first diffusion pool and the second diffusion pool are placed in the outer frame, and then the ejector rod is inserted into the through hole of the outer frame and abuts against the first diffusion pool or the second diffusion pool, so that the first diffusion pool and the second diffusion pool are tightly matched.
In some embodiments, as shown in fig. 1, the second diffusion cell 2 is provided with a fixing seat 6, and the fixing seat 6 is provided with a hole for inserting the push rod 5. One end of the ejector rod penetrates through the through hole in the outer frame and then is inserted into the hole in the fixing seat, so that the ejector rod is connected with the second diffusion pool, and the ejector rod can be fixedly connected with the first diffusion pool or the second diffusion pool when tightly pushing against the second diffusion pool. In some embodiments, the fixing seat may also be provided on the first diffusion cell 1.
The first diffusion cell 1 and the second diffusion cell 2 are both connected with the outer frame 4 in a sliding way. For example, as shown in fig. 9, the bottom of the first diffusion cell 1 is provided with a slider 104, the bottom of the second diffusion cell 2 is provided with a slider 203, the outer frame is provided with an opening 401 for accommodating the slider, and when the first diffusion cell 1 and the second diffusion cell 2 are placed in the outer frame, the slider 104 of the first diffusion cell and the slider 203 of the second diffusion cell are slidably connected to the opening. The bottom of the first diffusion cell slide 104, the bottom of the second diffusion cell slide 203 and the bottom of the outer frame are flush. The bottom of the outer frame is the side of the outer frame provided with the opening.
In some embodiments, the first diffusion cell is provided with a bump on the first contact surface, and the second diffusion cell is provided with a groove on the second contact surface for accommodating the bump, wherein the groove is aligned with the bump. When the first diffusion cell and the second diffusion cell are combined, the lug is inserted into the groove firstly, and the alignment of the first diffusion cell and the second diffusion cell is realized. The projection may be a pin 7 as shown in fig. 3 and the slot aligned with the projection may be an opening 8 for insertion of the pin as shown in fig. 5.
In some embodiments, as shown in fig. 1, the first diffusion cell 1 is provided with a sample addition hole 105 and a sample removal hole 106; the second diffusion cell is provided with a sample adding hole 204 and a sample taking hole 205. The sampling hole is used for adding the diffusion fluid, and the sampling hole is used for taking out the diffusion fluid from the first diffusion cell or the second diffusion cell and detecting the diffusion fluid.
Vertical diffusion device
FIGS. 9 to 15 show vertical diffusion devices in which the first diffusion cells and the second diffusion cells are combined and stacked one on top of the other. In some embodiments, the first diffusion cell 1 has a first screw hole 107 for screw insertion, such as shown in fig. 12; the second diffusion cell 2 has a second screw hole 206 aligned with the first screw hole, for example, as shown in fig. 10, a screw is inserted into the first screw hole 107 and the second screw hole 206, and the first diffusion cell and the second diffusion cell are tightly fitted by tightening the screw. When the first diffusion cell and the second diffusion cell need to be detached, the bolts are taken out from the first screw holes and the second screw holes, and then the first diffusion cell and the second diffusion cell are separated.
In some embodiments, a gas sensor and a temperature sensor are arranged in the first diffusion cell 1, and a hole 108 for accommodating the gas sensor is arranged on the second diffusion cell 1; the second diffusion cell 2 is provided with a hole 109 for accommodating a temperature sensor, as shown in fig. 10, for example.
In some embodiments, the second diffusion cell 2 is provided with a connector 207 for connection to a gas pipe, such as shown in fig. 10 and 11.
The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments, but rather by the claims and their equivalents.
Claims (10)
1. A diffusion device for membrane permeability testing, comprising a first diffusion cell, a second diffusion cell and a mounting mechanism for mounting a membrane, which are detachably combined, characterized in that: the first diffusion cell and the second diffusion cell are respectively provided with a limiting structure for limiting the mounting mechanism, and when the first diffusion cell is combined with the second diffusion cell, the limiting structure of the first diffusion cell is matched with the limiting structure of the second diffusion cell to limit the mounting mechanism between the first diffusion cell and the second diffusion cell.
2. The diffuser basket of claim 1, wherein: the first diffusion pool is provided with a first contact surface which is used for being in contact with the second diffusion pool, the limiting structure of the first diffusion pool is a first groove which is arranged on the first contact surface, and when the mounting mechanism is combined with the first diffusion pool, the mounting mechanism is clamped in the first groove.
3. The diffuser basket of claim 2, wherein: the second diffusion cell is provided with a second contact surface which is used for being in contact with the first diffusion cell, the limiting structure of the second diffusion cell is a second groove which is arranged on the second contact surface, and the mounting mechanism is clamped in the second groove when the mounting mechanism is combined with the second diffusion cell.
4. A diffusing device according to any of claims 1 to 3, wherein: installation mechanism includes first pressure membrane board and the second pressure membrane board of removable assembing, and the second pressure membrane board has the third recess, and when first pressure membrane board and second pressure membrane board were assembled, first pressure membrane board joint was in the third recess.
5. The diffuser basket of claim 4, wherein: when the mounting mechanism is combined with the second diffusion cell, the limiting structure of the second diffusion cell is connected with the second film pressing plate; when the first diffusion pool is combined with the mounting mechanism, the limiting structure of the first diffusion pool is connected with the first film pressing plate, or the limiting structure of the first diffusion pool is connected with the second film pressing plate.
6. The diffuser basket of claim 5, wherein: the first film pressing plate is provided with a first section used for being connected with the limiting structure of the first diffusion pool and a second section used for being clamped with the third groove.
7. The diffuser basket of claim 4, wherein: be equipped with the notch on the first pressure membrane board outer wall, when first pressure membrane board and second pressure membrane board combination, the notch exposes from the third recess.
8. The diffuser basket of claim 7, wherein: when the limiting structure of the first diffusion pool is connected with the first film pressing plate, the notch is exposed out of the limiting structure of the first diffusion pool.
9. The diffuser basket of claim 7, wherein: the two notches are arranged, and the symmetry axes of the two notches and the center line of the first film pressing plate are positioned on the same straight line; or, the notches are distributed on the outer wall of the first film pressing plate at equal intervals.
10. The diffuser basket of claim 1, wherein: the diffusion device also comprises an outer frame for accommodating the first diffusion pool and the second diffusion pool and an ejector rod for abutting against the first diffusion pool or the second diffusion pool, wherein the outer frame is provided with a through hole for inserting the ejector rod; or the first diffusion pool is provided with a first screw hole for inserting the screw rod, and the second diffusion pool is provided with a second screw hole which is aligned with the first screw hole.
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| CN201920560050.3U CN210119420U (en) | 2019-04-23 | 2019-04-23 | Diffusion device for film permeability test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366523A (en) * | 2020-04-27 | 2020-07-03 | 常州回天新材料有限公司 | Device for measuring water vapor transmittance of back film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366523A (en) * | 2020-04-27 | 2020-07-03 | 常州回天新材料有限公司 | Device for measuring water vapor transmittance of back film |
| CN111366523B (en) * | 2020-04-27 | 2021-12-10 | 常州回天新材料有限公司 | Device for measuring water vapor transmittance of back film |
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