CN209974376U - Membrane degassing device - Google Patents
Membrane degassing device Download PDFInfo
- Publication number
- CN209974376U CN209974376U CN201920654453.4U CN201920654453U CN209974376U CN 209974376 U CN209974376 U CN 209974376U CN 201920654453 U CN201920654453 U CN 201920654453U CN 209974376 U CN209974376 U CN 209974376U
- Authority
- CN
- China
- Prior art keywords
- degassing
- membrane
- tank
- membranes
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The utility model provides a membrane degasser, its simple structure, degassing rate and the degasification efficiency of liquid circuit part among the improvement biochemical analyzer that can furthest. The utility model discloses a membrane degassing unit, be in including degassing tank and built-in degassing membrane in the degassing tank, membrane degassing unit includes more than two degassing membrane, degassing membrane is the waterproof ventilated membrane of ePTFE, each degassing membrane is in degassing tank's axial spiral ground extends. The membrane degassing device of the utility model adopts the ePTFE waterproof and ventilated membrane with larger inner diameter as the degassing membrane, which can effectively reduce the liquid resistance and improve the degassing efficiency; more importantly, the degassing membrane is spirally wound in the degassing tank while the inner diameter is increased, so that under the condition that the axial length of the degassing tank is limited, the overall length of the degassing membrane is increased through a spiral structure, the degassing time is further prolonged, thorough degassing is realized, the formed degassing water can better meet the test requirement, and the test result is not influenced.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a membrane degasser.
Background
At present, in the biochemical industry, degassing devices on the market use bundles of membrane filaments, i.e. a bundle of fine RO (Reverse Osmosis) membrane filaments bundled to form a membrane tow, and a plurality of membrane tows are arranged in parallel between a water inlet and a water outlet.
With the structure, the following technical problems exist:
on one hand, the distance between the water inlet and the water outlet is extremely short, each membrane filament in the membrane filament bundle is connected between the water inlet and the water outlet in a linear mode, water flowing into the inner cavity of the membrane filament through the water inlet can be quickly discharged through the water outlet, the degassing time is short, and the degassing is not thorough; when the water which is not degassed thoroughly is used for cleaning, the cleaning needle and the sample adding needle are provided with air bubbles, and the test result is influenced.
On the other hand, during installation, single membrane filaments in the membrane filament bundles are required to be connected with the tank covers at two ends of the degassing tank in a sealing mode in a gluing mode, the membrane filaments are arranged tightly, the viscosity of glue for packaging is high, the glue for packaging cannot flow in place, the sealing effect is influenced, and the air leakage phenomenon occurs.
Moreover, the inner diameter of the membrane wire is small, so that the flow resistance of water in the inner cavity of the membrane wire is large, and the degassing efficiency is influenced.
Therefore, how to design a membrane degassing device to simplify the structure and improve the degassing efficiency and the degassing rate is an urgent technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a membrane degasser, its simple structure, the degasification rate and the degasification efficiency of liquid circuit part among the improvement biochemical analyzer that can furthest.
In order to achieve the above object, the present invention provides a membrane degassing device, comprising a degassing tank and a degassing membrane built in the degassing tank, wherein the membrane degassing device comprises more than two degassing membranes, the degassing membrane is an ePTFE waterproof and breathable membrane, and each degassing membrane extends spirally in the axial direction of the degassing tank.
The membrane degassing device of the utility model adopts the ePTFE waterproof and ventilated membrane with larger inner diameter as the degassing membrane, which can effectively reduce the liquid resistance and improve the degassing efficiency; more importantly, the degassing membrane is spirally wound in the degassing tank while the inner diameter is increased, so that under the condition that the axial length of the degassing tank is limited, the overall length of the degassing membrane is increased through a spiral structure, the degassing time is further prolonged, thorough degassing is realized, the formed degassing water can better meet the test requirement, and the test result is not influenced.
Optionally, degassing tank's both ends are connected with the cover respectively sealedly, one end the cover is equipped with into water interface, the other end the cover is equipped with out water interface, degassing membrane's both ends respectively with into water interface with out water interface sealing connection.
Optionally, a partition plate is fixedly connected to each of the water inlet interface and the water outlet interface, so that the water inlet interface or the water outlet interface is partitioned to form fixing holes corresponding to the degassing membranes one to one, and the degassing membranes are bonded, fixed and hermetically connected with the corresponding fixing holes at two ends of the degassing membranes.
Optionally, the water inlet pipe joint is connected with the water inlet interface, and the water outlet pipe joint is connected with the water outlet interface.
Optionally, the tank cover is further provided with an air exhaust interface for connecting a vacuum pump to vacuumize the degassing tank; and/or the tank cover is also provided with a drainage interface which is used for connecting a drainage connecting pipe to drain the liquid leaked into the degassing tank.
Optionally, a binding tape for binding the degassing membrane is further included to fix the spiral form of the degassing membrane;
or, the degassing membrane is wound on the support frame to fix the spiral shape of the degassing membrane.
Optionally, the number of turns of each degassing membrane is equal to or greater than ten turns, and the difference between the outer diameter of the spiral formed by each degassing membrane and the inner diameter of the degassing tank is smaller than a predetermined value.
Optionally, each of the degassing membranes is relatively independent and does not contact each other.
Optionally, the degassing membrane is a coated membrane formed by two or more layers of ePTFE waterproof breathable membrane.
Drawings
FIG. 1 is a schematic diagram of a membrane degasser according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a membrane degassing apparatus;
FIG. 3 is a schematic view showing the internal structure of the membrane degassing apparatus shown in FIG. 2;
FIG. 4 is a schematic top view of a tank lid of the membrane degasser of FIG. 2;
fig. 5 is a sectional view taken in the direction B-B in fig. 4.
In fig. 1-5:
a degassing tank-1, a degassing membrane-2, a tank cover-3, a water inlet connector-4, a water outlet connector-5, a partition-6, a fixing hole-7, a water inlet pipe connector-8, a water outlet pipe connector-9, an air exhaust connector-10 and a water drainage connector-11.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can accurately understand the technical solution of the present invention.
The terms first, second, etc. are used herein to distinguish two or more elements having the same or similar structure or two or more structures having the same or similar structure, and do not denote any particular order or importance.
The orientation is defined herein with reference to the use of the membrane degassing device, the direction in which the axis of the membrane degassing device extends or is parallel to the axis being the axial direction, the direction in which the diameter of the degassing tank 1 extends being the radial direction, and the direction in which the degassing tank 1 surrounds being the circumferential direction.
As shown in fig. 1-5, the present invention provides a membrane degassing device, which comprises a degassing tank 1 and a degassing membrane 2 built in the degassing tank 1, the membrane degassing device of the present invention comprises more than two degassing membranes 2, such as 4-6 degassing membranes 2, which are provided in the degassing tank 1 for illustration. The degassing membranes 2 adopted by the scheme are ePTFE waterproof and breathable membranes, the inner diameter can be between 5mm and 7mm, and each degassing membrane 2 spirally extends in the axial direction of the degassing tank 1.
In this embodiment, an ePTFE waterproof breathable film with an outer diameter of 6.7mm and a wall thickness of 0.2mm may be specifically used as the degassing membrane 2, the ePTFE waterproof breathable film is a microporous film formed by expanding and stretching polytetrafluoroethylene, the filtration pore diameter of the ePTFE waterproof breathable film may reach 0.1um, and the operating pressure may reach 0.3 MPa.
The vacuum degassing membrane is designed according to the principle of vacuum separation, water to be degassed flows in the ePTFE waterproof and breathable membrane, and gas and liquid are completely separated by changing the pressure condition outside the degassing membrane 2. The specific principle is as shown in figure 1:
according to henry's law, when the pressure is reduced, the solubility of the gas is reduced, so that the free gas and the dissolved gas P in the water are released, and the desorbed gas Q is accumulated at the top of the degassing device; at the moment, the water inlet electromagnetic valve is opened again, new water enters the degassing device, and gas accumulated at the top of the degassing device is exhausted through the vacuum pump. The degassed water, on the one hand, participates in the system circulation, on the other hand, due to the strong absorption capacity, absorbs the gas in the system, whether the gas is free or dissolved, when the water enters the degassing membrane 2 again, the gas is removed again, and the process is repeated in this way, and the gas in the system is completely discharged. For ease of understanding, the flow direction of the liquid is indicated by long solid arrows and the flow direction of the gas is indicated by short solid arrows in fig. 1.
As shown in fig. 1, a degassing tank 1 includes a tank cover and a tank cover 3, the tank cover is a cover with openings at two ends, a degassing membrane 2 is spirally arranged in the tank cover, then two ends of the tank cover are sealed by the tank cover 3 to form a sealed tank cavity for degassing, and the degassing tank 1 is further provided with an air extraction interface 10 on the tank cover 3 for connecting a vacuum pump so as to vacuumize the degassing tank 1 and form a vacuum environment required for degassing.
As shown in fig. 2, a tank cover 3 at one end of a degassing tank 1 is provided with a water inlet 4, a tank cover 3 at the other end is provided with a water outlet 5, and two ends of a degassing membrane 2 are respectively connected with the water inlet 4 and the water outlet 5 in a sealing manner.
As shown in fig. 4, four degassing membranes 2 are disposed in the degassing tank 1, and both ends of the degassing membranes 2 are hermetically connected to a water inlet port 4 and a water outlet port 5, respectively. For this purpose, as shown in fig. 4 and 5, a partition plate 6 is fixedly connected in each of the water inlet port 4 and the water outlet port 5, the partition plate 6 has a through hole to divide the water inlet port 4 into a plurality of fixing holes 7, the water outlet port 5 is also divided into a plurality of fixing holes 7, the fixing holes 7 correspond to the degassing membranes 2 one by one, when four degassing membranes 2 are provided, the partition plate 6 divides the water inlet port 4 and the water outlet port 5 into four fixing holes 7, and the degassing membranes 2 are bonded, fixed and hermetically connected at both ends thereof to the respective corresponding fixing holes 7.
As shown in fig. 4 and 5, the partition 6 may be a frame which exhibits a cross-shaped structure in the top view shown in fig. 4, and with the middle of the cross-shape as a solid structure, four partition holes may be provided around the solid structure at equal intervals in the circumferential direction, and the partition holes may be connected with the inner wall of the water inlet port 4 or the water outlet port 5 to enclose the fixing holes 7 for connecting the degassing membrane 2.
Alternatively, the fixing holes 7 may be directly formed in the partition plate 6, in this case, the partition plate 6 is a disk structure, and four fixing holes 7 are circumferentially provided at intervals on the disk structure to insert and adhere the degassing membrane 2, so as to realize the sealing connection between the degassing membrane 2 and the water inlet port 4 and the water outlet port 5.
Therefore, each degassing membrane 2 can be reliably positioned and cannot interfere with each other, the degassing membranes 2 can be independently bonded, the phenomenon that the degassing membranes 2 are bonded with each other due to the fact that the viscose flows in place is avoided, the sealing reliability of the two ends of each degassing membrane 2 is influenced, and the air leakage phenomenon cannot occur.
Furthermore, the fixing hole 7 can be formed in the tank cover 3 in a counter bore mode, the degassing membrane 2 can be inserted into the corresponding fixing hole 7 and then bonded by PVC glue, at the moment, glue for bonding can flow around the edge of the fixing hole 7 to fill the gap between the degassing membrane 2 and the fixing hole 7, so that the glue cannot flow outwards, the sealing performance is better, and air leakage cannot occur.
In order to introduce degassing water into degassing tank 1, the utility model discloses still including the water inlet pipe connector 8 that inserts into water interface 4 to and insert water outlet pipe connector 9 of water interface 5.
And, in the degasification process, a small amount of liquid in the degassing membrane 2 is likely to leak into the degassing tank 1, for this reason, the utility model discloses a cover 3 is still equipped with drainage interface 11, and this drainage interface 11 can connect the drainage takeover through the joint to discharge the liquid that leaks into the degassing tank 1, make degassing tank 1 keep dry, in order to form reliable and stable degassing environment.
As shown in fig. 3, the number of turns of each degassing membrane 2 is N, N being a natural number equal to or greater than 1, the specific number of turns being determined according to the application and the flow rate. In the present embodiment, the number of turns of each degassing membrane 2 may be ten turns or more, and the difference between the outer diameter of the spiral formed by each degassing membrane 2 and the inner diameter of the degassing tank 1 is smaller than a predetermined value, which is small, or may be a minute value, and the predetermined value may be set by a person skilled in the art as needed, so that the degassing membrane 2 uses the inner space of the degassing tank 1 as much as possible to enlarge the diameter of the spiral in the case that the axial length of the degassing tank 1 is limited, thereby effectively extending the overall length of the degassing membrane 2 by the spiral structure.
Meanwhile, 4-6 degassing membranes 2 are arranged in the degassing tank 1, so that the internal space of the degassing tank 1 is effectively utilized to prolong the degassing time, and the mutual interference of the degassing membranes 2 is avoided, namely, the degassing membranes 2 in the degassing tank 1 are independent and do not contact with each other.
It should be noted that, because a plurality of degassing membranes 2 are arranged in the degassing tank 1, each degassing membrane 2 is spirally wound for about 10 turns, and the axial length of the degassing tank 1 is relatively limited, the pitch of each degassing membrane 2 is small, so that the spiral structure of a single degassing membrane 2 is compact, and thus only one degassing membrane 2 is taken as an example in fig. 1; also, in fig. 1 a cross-section of a single degassing membrane 2 is shown in the middle part of the degassing tank 1, which cross-section is overlaid in the middle of the degassing tank 1 for better illustrating the degassing principle.
In addition, as described above, since the degassing membranes 2 have a large number of turns and are arranged more closely, the spiral shape of the degassing membranes 2 may be fixed first before being installed in the degassing tank 1, so as to improve the assembly efficiency and better avoid interference between the degassing membranes 2.
Therefore, the utility model discloses can be through structures such as ribbon or support frame for the spiral form of fixed degasification membrane 2. When the spiral form of the degassing membrane 2 is fixed by a ribbon, the degassing membrane 2 may be arranged spirally in the spiral form, and then the spirals are bundled respectively by diametrically opposite sides, thereby fixing the spiral form of one degassing membrane 2. When a support frame is selected, the support frame may be a cylindrical support frame or a polygonal support frame, and then the degassing membrane 2 is spirally wound around the support frame to fix the spiral form of the degassing membrane 2. When the degassing tank 1 is loaded, the support frame can be fixedly connected with the degassing tank 1, and the fixation of the degassing membrane 2 in the degassing tank 1 can be realized by the aid of a binding belt, so that the positioning reliability of the degassing membrane 2 is improved.
As mentioned in the background of the invention, the membrane filaments of a degasser in the prior art are in a bundle of juxtaposed, closely spaced structures, where the membrane filaments are RO reverse osmosis membranes, which are called membrane filaments because of their relatively small diameters. This structure has problems as mentioned in the background art, therefore, the application uses the ePTFE waterproof and breathable membrane with a larger diameter as the degassing membrane 2, compared with the bundled membrane filaments, the single degassing membrane 2 can effectively simplify the structure, and the spiral winding structure can be used to increase the whole length to prolong the degassing time and realize thorough degassing. Moreover, the degassing membrane 2 is selected to change the arrangement form of the degassing membrane 2 from dense to sparse, which further provides a foundation for sealing the degassing membrane 2 and the tank cover 3; at this time, several holes (i.e., fixing holes 7) are directly formed in the lid 3 of the degassing tank 1, and the degassing membrane 2 is inserted into the holes and then bonded with PVC glue, so that the bonded glue does not flow to the outside, and the sealing performance is good and airtight.
The utility model has the advantages as follows:
on one hand, compared with the membrane yarn bundle formed by binding a plurality of membrane yarns with smaller diameters, the utility model adopts a plurality of ePTFE waterproof and breathable membranes with larger inner diameters for degassing, thereby simplifying degassing structure, improving assembly efficiency, especially reducing liquid resistance and improving degassing efficiency;
on the other hand, compared with the membrane yarn bundle arranged in a straight line in the prior art, the utility model sets the ePTFE waterproof and breathable membrane into a spiral structure, and in the degassing tank 1 with limited axial length, the spiral structure can prolong the degassing time, and the degassing effect is not influenced by the improvement of the flow velocity, thereby realizing the thorough degassing;
moreover, compared with bundled membrane wires, the single degassing membrane 2 can be better in sealing connection with the tank cover 3, and the phenomenon that the degassing tank 1 is sealed due to the fact that the flowing of the viscose glue is not in place, and air leakage is caused is avoided.
The membrane degassing device provided by the present invention has been described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. Membrane degassing device comprising a degassing tank (1) and a degassing membrane (2) built into said degassing tank (1), characterised in that said membrane degassing device comprises two or more of said degassing membranes (2), said degassing membranes (2) being water-proof, gas-permeable membranes of ePTFE, each of said degassing membranes (2) extending helically in the axial direction of said degassing tank (1).
2. The membrane degassing device according to claim 1, wherein the degassing tank (1) is hermetically connected with a tank cover (3) at each of its two ends, the tank cover (3) at one end is provided with a water inlet (4), the tank cover (3) at the other end is provided with a water outlet (5), and the degassing membrane (2) is hermetically connected with the water inlet (4) and the water outlet (5) at each of its two ends.
3. The membrane degassing device according to claim 2, wherein a partition (6) is fixedly connected to each of said water inlet port (4) and said water outlet port (5) so as to partition said water inlet port (4) or said water outlet port (5) into fixing holes (7) corresponding to said degassing membranes (2), and said degassing membranes (2) are bonded, fixed and hermetically connected at both ends thereof to said respective fixing holes (7).
4. The membrane degassing device according to claim 2, further comprising a water inlet connector (8) connected to said water inlet connection (4), and a water outlet connector (9) connected to said water outlet connection (5).
5. The membrane degassing device according to claim 2, wherein the tank cover (3) is further provided with a gas extraction interface (10) for connecting a vacuum pump to evacuate the degassing tank (1); and/or the tank cover (3) is also provided with a drainage interface (11) for connecting a drainage connecting pipe to drain liquid leaked into the degassing tank (1).
6. A membrane degassing device according to any one of claims 1 to 5, further comprising a tie for tying said degassing membrane (2) so as to fix the spiral form of said degassing membrane (2);
or, the degassing device also comprises a support frame, and the degassing membrane (2) is wound on the support frame to fix the spiral shape of the degassing membrane.
7. A membrane degassing device according to any one of claims 1 to 5, in which each degassing membrane (2) has a number of turns of a spiral equal to or greater than ten turns, and the difference between the outer diameter of the spiral formed by each degassing membrane (2) and the inner diameter of the degassing tank (1) is less than a predetermined value.
8. A membrane degassing device according to any one of claims 1-5, in which each degassing membrane (2) is relatively independent and does not touch each other.
9. Membrane degassing device according to any one of claims 1 to 5, characterized in that said degassing membrane (2) is a coated membrane formed by two or more layers of ePTFE waterproof breathable membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920654453.4U CN209974376U (en) | 2019-05-08 | 2019-05-08 | Membrane degassing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920654453.4U CN209974376U (en) | 2019-05-08 | 2019-05-08 | Membrane degassing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209974376U true CN209974376U (en) | 2020-01-21 |
Family
ID=69261476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920654453.4U Active CN209974376U (en) | 2019-05-08 | 2019-05-08 | Membrane degassing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209974376U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110028132A (en) * | 2019-05-08 | 2019-07-19 | 东软威特曼生物科技（沈阳）有限公司 | Film degasser |
| CN114839318A (en) * | 2022-03-01 | 2022-08-02 | 中国海洋大学 | High-efficient degasification detecting system suitable for high pressure sea water underwater operation |
-
2019
- 2019-05-08 CN CN201920654453.4U patent/CN209974376U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110028132A (en) * | 2019-05-08 | 2019-07-19 | 东软威特曼生物科技（沈阳）有限公司 | Film degasser |
| CN114839318A (en) * | 2022-03-01 | 2022-08-02 | 中国海洋大学 | High-efficient degasification detecting system suitable for high pressure sea water underwater operation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209974376U (en) | Membrane degassing device | |
| AU624673B2 (en) | Hollow fiber blood oxygenator | |
| JP4795536B2 (en) | Potting a tubular bundle into the housing | |
| EP2070573B1 (en) | Gas removal device | |
| WO2021190002A1 (en) | Reverse osmosis membrane element, filter element, and water purifier | |
| CN104772041A (en) | Hollow fiber membrane module and filtering method | |
| EP0297410A2 (en) | Heat and material exchangers | |
| CN107249718A (en) | Separating film module and its method for repairing and mending | |
| CN100361729C (en) | Pleated construction for effecting gas transfer membrane | |
| US5234663A (en) | Hollow fiber blood oxygenator | |
| JP6462131B2 (en) | Hollow fiber membrane module | |
| CN100377767C (en) | Hollow cortina component | |
| CN205164515U (en) | Membrane module | |
| WO2016209755A1 (en) | Compact cross-flow contactor | |
| CN105561630B (en) | A kind of hollow-fiver membrane bassed-extractor | |
| JPH0530996B2 (en) | ||
| US10758844B2 (en) | Fluid degassing devices having selected profiles | |
| CN106466555A (en) | Hollow fiber film assembly and water treatment facilities | |
| CN113247991B (en) | Reverse osmosis filter core and water purifier | |
| CN211620014U (en) | Side-flow reverse osmosis membrane structure | |
| JP7290208B2 (en) | Hollow fiber membrane module | |
| CN110028132A (en) | Film degasser | |
| CN111715077A (en) | Lateral flow type water purification membrane structure and filter element | |
| CN218608848U (en) | Spiral flow passage structure of hollow fiber degassing membrane module | |
| JP2015089536A (en) | Separation membrane element and separation membrane module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |