CN117225017A - Preparation device and preparation method of polysulfonate flat ultrafiltration membrane - Google Patents
Preparation device and preparation method of polysulfonate flat ultrafiltration membrane Download PDFInfo
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- CN117225017A CN117225017A CN202311507610.6A CN202311507610A CN117225017A CN 117225017 A CN117225017 A CN 117225017A CN 202311507610 A CN202311507610 A CN 202311507610A CN 117225017 A CN117225017 A CN 117225017A
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- deaeration
- disc
- ultrafiltration membrane
- tank body
- polysulfonate
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- 239000012528 membrane Substances 0.000 title claims abstract description 109
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 105
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000007872 degassing Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011259 mixed solution Substances 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 82
- 230000007480 spreading Effects 0.000 claims description 15
- 238000003892 spreading Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 229930185605 Bisphenol Natural products 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 3
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 3
- 239000012498 ultrapure water Substances 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
- 241001330002 Bambuseae Species 0.000 claims 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application provides a preparation device and a preparation method of a polysulfonate flat ultrafiltration membrane, and relates to the technical field of high-molecular ultrafiltration membranes. The preparation device of the polysulfonate flat ultrafiltration membrane comprises a tank body, wherein a defoaming mechanism is arranged in the tank body, the defoaming mechanism comprises a material conveying cylinder coaxially arranged with the tank body, and a material conveying auger is rotationally connected with the material conveying cylinder; the driving motor is used for driving the conveying auger to rotate; the peripheral side cover of defeated feed cylinder is equipped with the deaeration subassembly, the deaeration subassembly is followed defeated feed cylinder's axial evenly sets up, a plurality of deaeration subassembly is followed defeated feed cylinder circumference is crisscross to be set up, go up the setting of deaeration dish slope, lower deaeration dish slope sets up, carries out a lot of water conservancy diversion stand membrane to the mixed solution under the top overflow of follow defeated feed cylinder, realizes multiple degasification to the mixed solution at continuous Z water conservancy diversion and continuous membrane process that spreads, promotes the degassing efficiency of mixed solution.
Description
Technical Field
The application relates to the technical field of high molecular ultrafiltration membranes, in particular to a preparation device and a preparation method of a polysulfonate flat ultrafiltration membrane.
Background
The water treatment and reuse is an important mode for recycling water resources and protecting water resources, the ultrafiltration membrane plays a role in the water treatment process, and the polysulfonate has the advantages of acid and alkali resistance, organic solvent resistance, oxidation resistance and ultraviolet resistance, and is an excellent ultrafiltration membrane material.
In the process of preparing the polysulfonate ultrafiltration membrane, chemical reaction is required to be carried out on the polymer and a catalyst, and then a solution for membrane preparation can be prepared at the rear, in the process, in order to increase the mixing capability between the polymer and the catalyst and promote the chemical reaction between the polymer and the catalyst, the mixed solution is required to be stirred, however, in the stirring process, a large number of bubbles are inevitably contained in the mixed solution, the existence of the bubbles influences the quality of the ultrafiltration membrane prepared subsequently, the filtering effect of the ultrafiltration membrane on water is influenced, in the prior art, the bubbles in the mixed solution are mostly solved by adopting a mode of vacuumizing and standing in a matching manner, but a great amount of time is required to be consumed for standing, and the overall production rate of the ultrafiltration membrane is influenced.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a preparation device of a polysulfonate flat ultrafiltration membrane, which comprises a tank body, wherein a feeding port is arranged at the top of the tank body, a discharging port is arranged at the bottom of the tank body, a vacuumizing interface is arranged at the top of the tank body, the vacuumizing interface is externally connected with vacuumizing equipment, a communicated cavity is arranged on the side wall and the bottom of the tank body, and a heating medium inlet is arranged at the upper part of the cavity, and the preparation device further comprises:
the device comprises a tank body, and is characterized in that a defoaming mechanism is arranged in the tank body and comprises a material conveying cylinder coaxially arranged with the tank body, wherein the bottom end of the material conveying cylinder is fixedly connected with the bottom in the tank body and is communicated with the bottom in the tank body, and a material conveying auger is rotationally connected with the material conveying cylinder;
the defoaming mechanism further comprises a driving motor fixedly connected to the tank body, and the driving motor is used for driving the conveying auger to rotate;
the peripheral side of the material conveying cylinder is sleeved with a defoaming component, the defoaming component is uniformly arranged along the axial direction of the material conveying cylinder, and a plurality of defoaming components are staggered along the circumference of the material conveying cylinder, wherein the defoaming component comprises an upper defoaming disc and a lower defoaming disc which are sleeved on the material conveying cylinder, and the upper defoaming disc and the lower defoaming disc are fixedly connected in the same group;
the upper deaeration disc is arranged in a gradually downward inclination manner from inside to outside along the radial direction of the material conveying cylinder, the lower deaeration disc is arranged in a gradually upward inclination manner from inside to outside along the radial direction of the material conveying cylinder, a space is reserved between the upper deaeration disc and the inner wall of the tank body, and a space is reserved between the lower deaeration disc and the outer wall of the material conveying cylinder.
In addition, the preparation device of the polysulfonate flat ultrafiltration membrane provided by the embodiment of the application has the following additional technical characteristics:
in some embodiments of the present application, the cavity on the tank is a heat medium chamber, and the heat medium chamber is communicated with the heat medium inlet.
In some embodiments of the present application, a driving rod is coaxially disposed on the material conveying auger, and the driving rod is rotatably connected to the inner bottom of the tank body.
In some embodiments of the application, the bottom circumference of the material conveying cylinder is uniformly fixedly connected with supporting legs, and the supporting legs are fixedly connected with the inner bottom of the tank body.
In some embodiments of the present application, the output end of the driving motor is in transmission connection with a shaft barrel, the shaft barrel rotates to penetrate through the top end of the tank body and extends to the inside of the tank body, and the shaft barrel and the output end of the driving motor are connected with a bevel gear pair in a key way.
In some embodiments of the application, a gear pair is keyed between the drive rod and the shaft.
In some embodiments of the present application, the upper deaeration disc and the lower deaeration disc are uniformly arranged along the circumference of the feed conveying cylinder, and the upper deaeration disc and the lower deaeration disc are staggered.
In some specific embodiments of the application, a connecting block is uniformly and fixedly connected between the upper deaeration disc and the lower deaeration disc, a connecting rod is uniformly and fixedly connected between the deaeration assemblies along the circumference of the material conveying cylinder, and the connecting rod is in running fit with the side wall of the tank body.
In some embodiments of the present application, the upper end surfaces of the upper deaeration disc and the lower end surfaces of the lower deaeration disc are all arc-shaped.
In some embodiments of the present application, an auxiliary mechanism is further connected to the output end of the driving motor in a transmission manner, and the auxiliary mechanism is driven by the driving motor and drives the upper deaeration disc and the lower deaeration disc to rotate synchronously.
In some embodiments of the present application, the auxiliary mechanism includes a toothed ring coupled to the tank, a first driven gear rotatably connected to the tank is meshed with the toothed ring, a second driven gear rotatably connected to the tank is meshed with one side of the first driven gear, a driving gear is meshed with one side of the second driven gear away from the first driven gear, a driving shaft is connected with an upper key of the driving gear, and the driving shaft and the shaft barrel are coaxially and rotatably connected.
In some embodiments of the present application, an end of the shaft away from the driving gear extends out of the shaft and is keyed with an auxiliary bevel gear that meshes with the bevel gear pair keyed on the output of the drive motor.
In some embodiments of the present application, fixing rods are uniformly and fixedly connected on the circumference of the lower end surface of the toothed ring, and the fixing rods are fixedly connected with the defoaming assemblies positioned on the top layer respectively, wherein the fixing rods are attached to the inner wall of the tank body.
In some embodiments of the present application, an upper guide strip is uniformly arranged on the upper end surface of the upper deaeration disc and takes the material conveying cylinder as an axis;
and lower guide strips are uniformly arranged on the circumference of the upper end surface of the lower deaeration disc by taking the material conveying cylinder as an axis.
In some embodiments of the present application, the driving rod is hollow, and the bottom end of the driving rod penetrates through the inner bottom of the tank body and is communicated with the heating medium cabin;
the top of the tank body is coaxially provided with a heating medium outlet, one end of the heating medium outlet extending into the tank body is communicated with a rotary joint, and the rotary joint is communicated with the driving rod.
In some embodiments of the application, the discharge port penetrates the heating medium compartment and is communicated with the inner bottom of the tank body.
The device for preparing the polysulfonate flat ultrafiltration membrane has the beneficial effects that:
the mixed liquid in the tank body is continuously conveyed to the top end of the conveying cylinder from the inner bottom of the tank body by utilizing the continuous rotation of the conveying auger, overflows downwards from the top end of the conveying cylinder, and when the overflowed mixed liquid passes through the upper deaeration disc and the lower deaeration disc, Z-shaped flow diversion is sequentially carried out on the mixed liquid through the upper deaeration disc and the lower deaeration disc, a spreading film is formed on the upper deaeration disc and the lower deaeration disc by the mixed liquid, the thickness of the mixed liquid is thinned in the process, the mixed liquid forms a film shape, and continuously flows downwards along the upper end surfaces of the upper deaeration disc and the lower deaeration disc, so that bubbles in the solution are broken, and the deaeration action is completed;
the multiple deaeration components are uniformly arranged in the axial direction of the material conveying cylinder, and the multiple deaeration components are circumferentially staggered, so that the mixed liquid overflowed from the top end of the material conveying cylinder is subjected to multiple diversion and film spreading, multiple deaeration is realized on the mixed liquid in the continuous Z-shaped diversion and continuous film spreading process, and the deaeration efficiency of the mixed liquid is improved;
continuously conveying the mixed liquid from the inner bottom of the tank body to the top end of the feed conveying cylinder by utilizing a feed conveying auger, then forming reciprocating degassing operation on the mixed liquid, and further improving the degassing efficiency and effect of the mixed liquid by matching with a plurality of degassing assemblies;
and the mixed liquid is continuously conveyed upwards along the material conveying cylinder from the bottom in the tank body to form circulation, so that the mixed liquid in the tank body is uniformly mixed by heat, the viscosity of the mixed liquid can be kept consistent in the degassing process, and the separation effect of gas in the mixed liquid is further improved.
On the other hand, the embodiment of the application also provides a preparation method of the polysulfonate flat ultrafiltration membrane, which comprises the following steps:
s1: synthesis of polysulfonate:
dissolving bisphenol monomer and aryl disulfonyl fluoride monomer with equal molar weight into an organic solvent, uniformly mixing, adding a catalyst and an acid binding agent, carrying out polymerization reaction at 50-200 ℃, pouring the reaction solution into stirred water after the reaction is finished, and separating out a polymer, namely the copolymer polysulfonate compound;
s2: preparing an ultrafiltration membrane solution:
dissolving the polysulfonate obtained in the step S1 into dimethylacetamide in the tank body, adding 5% of PEG-400 (polyethylene glycol), stirring the mixture uniformly, and intermittently vacuumizing the tank body;
s3: degassing an ultrafiltration membrane solution:
the conveying auger is driven by the driving motor to rotate, so that the uniform mixed solution obtained in the step S2 is conveyed from the bottom end to the top end of the conveying cylinder and overflows downwards from the top end, the upper deaeration disc and the lower deaeration disc which are uniformly arranged on the circumferential side of the conveying cylinder are matched, the overflowed molten liquid is guided, the flowing spreading film is realized in the process of guiding the molten liquid along the upper deaeration disc and the lower deaeration disc, and bubbles in the molten liquid are broken in the process of flowing the spreading film for multiple times, so that deaeration and deaeration actions are realized;
s4: preparing a flat ultrafiltration membrane:
uniformly spreading the climatic ultrafiltration membrane solution in the step S3 in a clean glassware, rapidly placing in purified water for cooling and forming, and naturally airing the formed flat ultrafiltration membrane after being washed by ultrapure water.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a device for preparing a polysulfonate flat ultrafiltration membrane according to an embodiment of the application;
FIG. 2 is a schematic view showing the internal structure of a device for preparing a polysulfonate flat ultrafiltration membrane according to an embodiment of the application;
FIG. 3 is a schematic view of the structure of the deaeration mechanism in the tank according to the embodiment of the application;
FIG. 4 is a schematic view showing a partial structure of a defoaming mechanism according to an embodiment of the present application;
FIG. 5 is an enlarged schematic view of A of FIG. 3 according to an embodiment of the application;
FIG. 6 is a schematic diagram of a de-bubbling assembly according to an embodiment of the application;
FIG. 7 is a schematic view of a partial structure of a deaeration assembly according to an embodiment of the application;
FIG. 8 is a schematic structural view of an auxiliary mechanism according to an embodiment of the present application;
FIG. 9 is an enlarged view of B of FIG. 8 according to an embodiment of the present application;
fig. 10 is a schematic view of the structure of the guide strip on the upper deaerating disc and the lower deaerating disc according to the embodiment of the application.
Icon: 1. a tank body; 101. a feeding port; 102. a discharge port; 103. a vacuumizing interface; 104. a heating medium inlet; 11. a heating medium cabin; 2. a defoaming mechanism; 21. a feed delivery cylinder; 211. a material conveying auger; 212. a driving rod; 213. a support leg; 22. a driving motor; 221. a shaft cylinder; 222. bevel gear pair; 223. a gear pair; 23. a defoaming component; 231. a defoaming disc is arranged on the upper part; 232. a lower deaeration disc; 233. a connecting block; 234. a connecting rod; 24. a heating medium outlet; 241. a rotary joint; 3. an auxiliary mechanism; 31. a toothed ring; 311. a first driven gear; 312. a second driven gear; 313. a drive gear; 314. a drive shaft; 315. an auxiliary bevel gear; 32. a fixed rod; 33. a flow guiding strip; 331. an upper guide strip; 332. and a lower guide strip.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments of the application, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the application.
As shown in fig. 1 to 10, a preparation device for a polysulfonate flat ultrafiltration membrane according to an embodiment of the application comprises a tank body 1, wherein a feeding port 101 is arranged at the top of the tank body 1, a discharge port 102 is arranged at the bottom of the tank body 1, a vacuumizing interface 103 is arranged at the top of the tank body 1, the vacuumizing interface 103 is externally connected with vacuumizing equipment, a communicated cavity is arranged on the side wall and the bottom of the tank body 1, a heating medium inlet 104 is arranged at the upper part of the cavity, and a heating medium (heat conducting oil and the like) can be specifically injected into the cavity through an externally connected pump body to finish the heating work of a solution in the tank body 1.
Wherein, be provided with deaeration mechanism 2 in the jar body 1, deaeration mechanism 2 contains the defeated feed cylinder 21 that sets up with jar body 1 coaxial, and the bottom rigid coupling of defeated feed cylinder 21 is in jar body 1 to with jar body 1 in-bottom intercommunication, defeated feed cylinder 21 internal rotation is connected with defeated material auger 211 for carry out axial to the solution in the jar body 1.
The defoaming mechanism 2 further comprises a driving motor 22 fixedly connected to the tank body 1, and the driving motor 22 is used for driving the conveying auger 211 to rotate.
As shown in fig. 3 and 6, the peripheral side of the feed cylinder 21 is sleeved with a defoaming component 23, the defoaming component 23 is uniformly arranged along the axial direction of the feed cylinder 21, and a plurality of defoaming components 23 are staggered along the circumference of the feed cylinder 21, wherein the defoaming component 23 comprises an upper defoaming disc 231 and a lower defoaming disc 232 sleeved on the feed cylinder 21, the upper defoaming disc 231 and the lower defoaming disc 232 in the same group are fixedly connected, and it is required to be noted that the bottom end of the defoaming component 23, namely the lower defoaming disc 232 at the bottommost layer is in running fit with the inner bottom of the tank body 1, and the upper defoaming disc 231 is in running fit with the side wall of the feed cylinder 21 so as to form a support for the defoaming component 23, and the defoaming component 23 can be ensured to freely rotate in the tank body 1.
The upper deaeration disc 231 is gradually and downwards inclined along the radial direction of the feed conveying cylinder 21 from inside to outside, the lower deaeration disc 232 is gradually and upwards inclined along the radial direction of the feed conveying cylinder 21 from inside to outside, a space is reserved between the upper deaeration disc 231 and the inner wall of the tank body 1, a space is reserved between the lower deaeration disc 232 and the outer wall of the feed conveying cylinder 21, and a continuous flowing of solution can be formed between the upper deaeration disc 231 and the lower deaeration disc 232.
In addition, the preparation device of the polysulfonate flat ultrafiltration membrane provided by the embodiment of the application has the following additional technical characteristics:
the cavity on the tank 1 is a heat medium chamber 11, as shown in fig. 3 and 4, the heat medium chamber 11 is in a U-shape, so as to heat the solution in the tank 1 from the side and bottom of the tank 1, and the heat medium chamber 11 is communicated with the heat medium inlet 104.
Further, a driving rod 212 is coaxially disposed on the material conveying auger 211, the driving rod 212 is rotatably connected to the inner bottom of the tank body 1, specifically, a driving connection mode can be formed by key connection between the material conveying auger 211 and the driving rod 212, and a sealing rotation connection relationship is formed between the driving rod 212 and the inner bottom of the tank body 1, so that countercurrent occurs between the solution in the tank body 1 and the heating medium in the heating medium cabin 11.
Further, the bottom circumference of the material conveying cylinder 21 is uniformly and fixedly connected with the supporting legs 213, the supporting legs 213 are fixedly connected to the inner bottom of the tank body 1, as shown in fig. 4, the supporting legs 213 enable the material conveying cylinder 21 to form a suspended shape inside the tank body 1, so that the solution in the tank body 1 flows into the material conveying cylinder 21, and the axial conveying can be completed through the rotary material conveying auger 211.
Further, the output end of the driving motor 22 is connected with a shaft barrel 221 in a transmission manner, the shaft barrel 221 penetrates through the top end of the tank body 1 in a rotating manner and extends into the tank body 1, and the shaft barrel 221 and the output end of the driving motor 22 are connected with a bevel gear pair 222 in a key manner.
Wherein a gear pair 223 is keyed between the drive rod 212 and the shaft barrel 221.
In this way, the driving motor 22 can drive the driving rod 212 to rotate, so that the material conveying auger 211 rotates.
Further, the upper deaeration tray 231 and the lower deaeration tray 232 are uniformly arranged along the circumference of the feed cylinder 21, and the upper deaeration tray 231 and the lower deaeration tray 232 are staggered, as shown in fig. 6 and 7, the staggered upper deaeration tray 231 and lower deaeration tray 232 form a flow guiding and film spreading action as comprehensively as possible for the solution overflowed from the top end of the feed cylinder 21.
Further, a connection block 233 is uniformly and fixedly connected between the upper deaeration disc 231 and the lower deaeration disc 232 along the circumference, a connection rod 234 is uniformly and fixedly connected between the deaeration assemblies 23 along the axial direction of the feed conveying cylinder 21, and the connection rod 234 is in running fit with the side wall of the tank body 1, so that fixed connection is formed between the plurality of groups of deaeration assemblies 23.
Wherein, the upper and lower terminal surfaces of upper deaeration dish 231 and lower deaeration dish 232 all are the arc setting, and the reinforcing is to the water conservancy diversion and the film spreading action of solution, and specifically, upper and lower two terminal surfaces of upper deaeration dish 231 are the bellied arc that makes progress, and upper and lower two terminal surfaces of lower deaeration dish 232 are the sunken arc.
The following describes the use process of a device for preparing a polysulfonate flat ultrafiltration membrane according to an embodiment of the application with reference to the accompanying drawings:
when in use, heating medium is injected into the heating medium cabin 11 through the heating medium inlet 104, the ultrafiltration membrane solution in the tank body 1 is heated, after the ultrafiltration membrane solution is uniformly mixed, the interior of the tank body 1 is vacuumized through the vacuumizing interface 103, then the driving motor 22 is started, the cylinder 221 is driven to rotate through the bevel gear pair 222, the driving rod 212 is driven to rotate by the gear pair 223 connected with the other end of the cylinder 221 by a key, then the feeding auger 211 is driven to rotate, the feeding auger 211 rotates in the feeding cylinder 21, the ultrafiltration membrane solution is conveyed from the bottom end of the feeding cylinder 21 to the top end, finally overflows from the top end of the feeding cylinder 21 and falls to the upper end face of the upper disc 231 on the top layer, then the overflowed ultrafiltration membrane solution flows along the arc upper end face of the upper defoaming disc 231 towards the inner wall direction of the tank body 1, in the process, the thickness of the ultrafiltration membrane solution is thinned, because of the vacuum environment in the tank 1, bubbles in the ultrafiltration membrane solution will be broken under the action of negative pressure, when the ultrafiltration membrane solution flows to the bottom along the upper deaeration disc 231, the ultrafiltration membrane solution will drop onto the lower deaeration disc 232 below the upper deaeration disc 231, and then flow along the arc-shaped surface of the lower deaeration disc 232 towards the side wall of the feed delivery cylinder 21, in this process, the ultrafiltration membrane solution mixture overflowed from the top end of the feed delivery cylinder 21 will be subjected to degassing operation by the arc-shaped surface of the lower deaeration disc 232, so that under the action of the plurality of groups of deaeration assemblies 23, the ultrafiltration membrane solution mixture overflowed from the top end of the feed delivery cylinder 21 will be subjected to multiple deaeration operations until the ultrafiltration membrane solution is continuously conveyed upwards by the feed delivery auger 211, multiple degassing operations are realized on the ultrafiltration membrane solution in the tank 1, and before degassing, the height of the ultrafiltration membrane solution in the tank body 1 is not higher than the lowest position of the uppermost Fang Tuopao component 23, namely, at least one group of deaeration components 23 is guaranteed to deaerate the ultrafiltration membrane solution, of course, the more the number of deaeration components 23 which are higher than the liquid level is, the better the deaeration effect is, the faster the speed is, wherein the ultrafiltration membrane solution is conveyed from the bottom to the top in the tank body 1 along the axial direction from the inner bottom of the tank body 1 by the feed cylinder 21 and the feed auger 211, the ultrafiltration membrane solution in the whole tank body 1 can form a reciprocating cycle, the ultrafiltration membrane solution can be promoted to be heated uniformly in the tank body 1, the viscosity of the ultrafiltration membrane solution can be uniform as a whole, the viscosity of the ultrafiltration membrane solution with uniform temperature can be guaranteed relative to the ultrafiltration membrane solution with uneven temperature, and the deaeration operation of the ultrafiltration membrane solution on the deaeration components 23 is further facilitated.
In the related art, the upper deaeration tray 231 and the lower deaeration tray 232 of the same group are uniformly distributed around the feed cylinder 21, and although the upper deaeration tray 231 and the lower deaeration tray 232 are staggered, the same group of deaeration assemblies 23 can perform the overall deaeration operation on the ultrafiltration membrane solution overflowed from the top end of the feed cylinder 21, and no omission is caused, but gaps between two adjacent upper deaeration trays 231 and between two adjacent lower deaeration trays 232 can cause that the upper deaeration tray 231 and the lower deaeration tray 232 cannot simultaneously perform the overall deaeration operation on the ultrafiltration membrane solution overflowed from the top end of the feed cylinder 21, so that the deaeration efficiency of the ultrafiltration membrane solution in the whole tank 1 can be reduced, and the requirement of removing the ultrafiltration membrane solution can be met by repeatedly conveying the ultrafiltration membrane solution by a plurality of groups of assemblies 23 or the feed augmenter 211.
According to some embodiments of the present application, as shown in fig. 8-10, the output end of the driving motor 22 is further connected with an auxiliary mechanism 3 in a transmission manner, and the auxiliary mechanism 3 is driven by the driving motor 22 and drives the upper deaeration disc 231 and the lower deaeration disc 232 to rotate synchronously.
The driving motor 22 has a speed adjusting function, that is, the rotational speed thereof is controllable.
Further, the auxiliary mechanism 3 comprises a toothed ring 31 coupled with the tank 1, a first driven gear 311 rotatably connected with the tank 1 is meshed with the toothed ring 31, a second driven gear 312 rotatably connected with the tank 1 is meshed with one side of the first driven gear 311, a driving gear 313 is meshed with one side of the second driven gear 312 far away from the first driven gear 311, a driving shaft 314 is connected with the driving gear 313 in a key way, and the driving shaft 314 and the shaft barrel 221 are coaxially and rotatably connected in a plugging mode.
Wherein, the end of the shaft tube 221 away from the driving gear 313 extends out of the shaft tube 221, and is connected with a auxiliary bevel gear 315 in a key way, and the auxiliary bevel gear 315 is meshed with a bevel gear pair 222 connected with the output end of the driving motor 22 in a key way.
Further, the fixing rods 32 are uniformly fixedly connected to the circumference of the lower end face of the toothed ring 31, the fixing rods 32 are fixedly connected with the defoaming assembly 23 positioned on the top layer respectively, and the fixing rods 32 are attached to the inner wall of the tank body 1.
Further, as shown in fig. 10, an upper guide strip 331 is uniformly arranged on the upper end surface of the upper deaeration disc 231 by taking the feed conveying cylinder 21 as an axis;
the upper end surface of the lower deaeration disc 232 takes the feed delivery cylinder 21 as an axis, and the circumference is uniformly provided with lower guide strips 332.
Thus, in the first embodiment, when the degassing operation is required for the ultrafiltration membrane solution, the rotation speed of the driving motor 22 is reduced, after the driving motor 22 is started, the feeding auger 211 is synchronously driven to rotate, the circulation conveying of the ultrafiltration membrane solution from bottom to top is completed, meanwhile, the driving motor 22 synchronously drives the driving shaft 314 to rotate through the meshing relationship between the bevel gear pair 222 and the auxiliary bevel gear 315 which are connected with the driving shaft 314 in a key manner, then drives the driving gear 313 to rotate through the driving gear 313 which is connected with the driving shaft 314 in a key manner, then drives the first driven gear 311 to rotate through the second driven gear 312, thus, the toothed ring 31 is driven to synchronously rotate, the rotating toothed ring 31 drives the whole defoaming assembly 23 to rotate between the inner wall of the tank body 1 and the outer wall of the feeding barrel 21 through the fixed rod 32 fixedly connected with the driving motor, and it is to be noted that, the rotation speed of the defoaming component 23 is controlled to be capable of stirring the ultrafiltration membrane solution, but new bubbles are not formed in the ultrafiltration membrane solution due to the fact that the rotation speed is too high, in the process, the ultrafiltration membrane solution is continuously conveyed from the inner bottom to the inner top of the tank body 1 through the actions of the feed conveying cylinder 21 and the feed conveying auger 211, and the defoaming operation is completed through the defoaming component 23 when the ultrafiltration membrane solution flows downwards from the top end of the feed conveying cylinder 21, and the upper guide strips 331 and the lower guide strips 332 arranged on the upper end surfaces of the rotating defoaming component 23 and the upper and lower defoaming discs 231 and 232 can form transverse shearing force on the liquid surface in the membrane spreading process, so that the rupture of bubbles in the ultrafiltration membrane solution is further facilitated, meanwhile, the bottom of the rotating defoaming component 23 can stir the ultrafiltration membrane solution which does not enter the feed conveying cylinder 21 in the tank body 1, so that the bubbles in the ultrafiltration membrane solution are uniformly mixed, the temperature of the ultrafiltration membrane solution is further balanced, the degassing effect and the speed of the ultrafiltration membrane solution can be integrally improved, and the rotating degassing component 23 can enable the overflow ultrafiltration membrane solution below to be subjected to the degassing operation of the upper degassing disc 231 and the lower degassing disc 232 of each layer as comprehensively as possible when passing through the upper degassing disc 231 and the lower degassing disc 232 of each layer, so that the degassing effect and the speed of the ultrafiltration membrane solution are further improved;
in the second embodiment, when the ultrafiltration membrane solution is mixed in the tank body 1, the rotation speed of the driving motor 22 can be increased, and the rotation speed of the feeding auger 211 and the rotation speed of the whole defoaming assembly 23 in the tank body 1 can be increased, so that the mixing speed of the ultrafiltration membrane solution can be further increased when the ultrafiltration membrane solution is mixed, and meanwhile, the upper flow guide strip 331 and the lower flow guide strip 332 arranged on the upper end surfaces of the upper defoaming disc 231 and the lower defoaming disc 232 are matched with the upper defoaming disc 231 and the lower defoaming disc 232 which are arranged in a staggered manner, so that the mixing speed of the ultrafiltration membrane solution can be further increased from the radial direction, and meanwhile, the feeding auger 211 continuously conveys the ultrafiltration membrane solution from the inner bottom to the inner top, and the mixing speed of the ultrafiltration membrane solution can be increased from the axial direction, so that the mixing time of the ultrafiltration membrane solution can be reduced, and the working efficiency can be improved.
In the related art, although the feed auger 211 and the feed cylinder 21 can increase the mixing degree of the ultrafiltration membrane solution from the axial direction and improve the temperature uniformity of the ultrafiltration membrane solution in the process of mixing and degassing the ultrafiltration membrane solution, the heating surfaces of the ultrafiltration membrane solution are always the inner side and the bottom side of the tank body 1, and the overall heating of the ultrafiltration membrane solution has more or less local deviation.
According to some embodiments of the present application, as shown in fig. 3 to 5, the driving rod 212 is hollow, and the bottom end of the driving rod 212 penetrates through the inner bottom of the tank 1 and is communicated with the heating medium compartment 11;
the top of the tank body 1 is coaxially provided with a heating medium outlet 24, one end of the heating medium outlet 24 extending into the tank body 1 is communicated with a rotary joint 241, and the rotary joint 241 is communicated with the driving rod 212.
Wherein, the discharge port 102 penetrates through the heating medium cabin 11 and is communicated with the inner bottom of the tank body 1.
Therefore, through the external pump body, the heat medium circulation can be formed among the heat medium cabin 11, the driving rod 212 and the rotary joint 241 through the heat medium inlet 104 and the heat medium outlet 24, and the ultrafiltration membrane solution rising along the material conveying auger 211 in the material conveying cylinder 21 can be heated in the rising process, so that the ultrafiltration membrane solution in the whole tank body 1 can be heated continuously from the outer side, the bottom side and the axis, then the material conveying auger 211 forms the ultrafiltration membrane solution in the reciprocating axial circulation, the heating surface is increased, the heating effect is improved, and then the overall heat uniformity of the ultrafiltration membrane solution in the tank body 1 is further improved by adopting the design of the device, the heating efficiency of the ultrafiltration membrane solution is improved, the heat utilization rate of the heat medium is improved, and the probability of reducing the degassing efficiency due to the uneven viscosity of the ultrafiltration membrane solution in the degassing process is reduced.
On the other hand, the embodiment of the application also provides a preparation method of the polysulfonate flat ultrafiltration membrane, which comprises the following steps:
s1: synthesis of polysulfonate:
dissolving bisphenol monomer and aryl disulfonyl fluoride monomer with equal molar weight into an organic solvent, uniformly mixing, adding a catalyst and an acid binding agent, carrying out polymerization reaction at 50-200 ℃, pouring the reaction solution into stirred water after the reaction is finished, and separating out a polymer, namely the copolymer polysulfonate compound;
s2: preparing an ultrafiltration membrane solution:
dissolving the polysulfonate obtained in the step S1 into dimethylacetamide in a tank body 1, adding 5% of PEG-400 (polyethylene glycol), stirring the mixture uniformly, and intermittently vacuumizing the tank body 1;
s3: degassing an ultrafiltration membrane solution:
the feeding auger 211 is driven to rotate by the driving motor 22, so that the uniform mixed solution obtained in the step S2 is conveyed from the bottom end to the top end of the feeding cylinder 21 and overflows downwards from the top end, an upper deaeration disc 231 and a lower deaeration disc 232 which are uniformly arranged on the periphery side of the feeding cylinder 21 are matched, molten liquid under overflow is guided, flowing spreading film is realized in the process of guiding the molten liquid along the upper deaeration disc 231 and the lower deaeration disc 232, and bubbles in the molten liquid are broken in the process of flowing spreading film for multiple times, so that deaeration and deaeration actions are realized;
s4: preparing a flat ultrafiltration membrane:
uniformly spreading the climatic ultrafiltration membrane solution in the step S3 in a clean glassware, rapidly placing in purified water for cooling and forming, and naturally airing the formed flat ultrafiltration membrane after being washed by ultrapure water.
It should be noted that, specific model specifications of the driving motor 22, the bevel gear pair 222, the gear pair 223, the rotary joint 241, the ring gear 31, the first driven gear 311, the second driven gear 312, the driving gear 313 and the auxiliary bevel gear 315 need to be determined according to the actual specifications of the device, and the specific model selection calculation method adopts the prior art in the field, so that detailed descriptions thereof are omitted.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a preparation facilities of dull and stereotyped milipore filter of polysulfonate, contains a jar body (1), jar body (1) top is provided with feed inlet (101), jar body (1) bottom is provided with discharge gate (102), jar body (1) top is provided with evacuation interface (103), just the external evacuation equipment of evacuation interface (103), the lateral wall and the bottom of jar body (1) are provided with the cavity of intercommunication, and the upper portion of this cavity is provided with heat medium entry (104), its characterized in that:
the device is characterized in that a defoaming mechanism (2) is arranged in the tank body (1), the defoaming mechanism (2) comprises a material conveying cylinder (21) coaxially arranged with the tank body (1), the bottom end of the material conveying cylinder (21) is fixedly connected to the inner bottom of the tank body (1) and communicated with the inner bottom of the tank body (1), and a material conveying auger (211) is rotationally connected to the material conveying cylinder (21);
the defoaming mechanism (2) further comprises a driving motor (22) fixedly connected to the tank body (1), and the driving motor (22) is used for driving the conveying auger (211) to rotate;
the peripheral side of the material conveying cylinder (21) is sleeved with a defoaming component (23), the defoaming component (23) is uniformly arranged along the axial direction of the material conveying cylinder (21), and a plurality of the defoaming components (23) are arranged along the circumference of the material conveying cylinder (21) in a staggered manner, wherein the defoaming component (23) comprises an upper defoaming disc (231) and a lower defoaming disc (232) which are sleeved on the material conveying cylinder (21), and the upper defoaming disc (231) and the lower defoaming disc (232) are fixedly connected in the same group;
the upper deaeration disc (231) is gradually downwards inclined from inside to outside along the radial direction of the material conveying cylinder (21), the lower deaeration disc (232) is gradually upwards inclined from inside to outside along the radial direction of the material conveying cylinder (21), a space is reserved between the upper deaeration disc (231) and the inner wall of the tank body (1), and a space is reserved between the lower deaeration disc (232) and the outer wall of the material conveying cylinder (21).
2. The device for preparing the polysulfonate flat ultrafiltration membrane according to claim 1, wherein the device comprises: the cavity on the tank body (1) is a heat medium cabin (11), and the heat medium cabin (11) is communicated with the heat medium inlet (104).
3. The device for preparing the polysulfonate flat ultrafiltration membrane according to claim 2, wherein the device comprises: the conveying auger (211) is coaxially provided with a driving rod (212), and the driving rod (212) is rotatably connected to the inner bottom of the tank body (1).
4. The device for preparing the polysulfonate flat ultrafiltration membrane according to claim 1, wherein the device comprises: the bottom circumference of the material conveying cylinder (21) is uniformly fixedly connected with supporting legs (213), and the supporting legs (213) are fixedly connected to the inner bottom of the tank body (1).
5. A device for preparing a polysulfonate flat panel ultrafiltration membrane according to claim 3, wherein: the output end transmission of driving motor (22) is connected with a shaft section of thick bamboo (221), shaft section of thick bamboo (221) rotate and run through the top of jar body (1) and extend to the inside of jar body (1), shaft section of thick bamboo (221) with the output key of driving motor (22) is connected with bevel gear pair (222).
6. The device for preparing the polysulfonate flat ultrafiltration membrane according to claim 5, wherein: a gear pair (223) is connected between the driving rod (212) and the shaft barrel (221) in a key way.
7. The device for preparing the polysulfonate flat ultrafiltration membrane according to claim 1, wherein the device comprises: the upper deaeration disc (231) and the lower deaeration disc (232) are uniformly arranged along the circumference of the material conveying cylinder (21) respectively, and the upper deaeration disc (231) and the lower deaeration disc (232) are arranged in a staggered mode.
8. The device for preparing the polysulfonate flat ultrafiltration membrane according to claim 1, wherein the device comprises: connecting blocks (233) are uniformly fixedly connected between the upper deaeration disc (231) and the lower deaeration disc (232) in the circumference, connecting rods (234) are uniformly fixedly connected between the deaeration assemblies (23) in the circumference along the axial direction of the feeding cylinder (21), and the connecting rods (234) are in running fit with the side walls of the tank body (1).
9. The device for preparing the polysulfonate flat ultrafiltration membrane according to claim 1, wherein the device comprises: the upper end face and the lower end face of the upper deaeration disc (231) and the lower deaeration disc (232) are arc-shaped.
10. A method for preparing a polysulfonate flat ultrafiltration membrane, characterized in that the device for preparing the polysulfonate flat ultrafiltration membrane according to any one of claims 1 to 9 is used, and comprises the following steps:
s1: synthesis of polysulfonate:
dissolving bisphenol monomer and aryl disulfonyl fluoride monomer with equal molar weight into an organic solvent, uniformly mixing, adding a catalyst and an acid binding agent, carrying out polymerization reaction at 50-200 ℃, pouring the reaction solution into stirred water after the reaction is finished, and separating out a polymer, namely the copolymer polysulfonate compound;
s2: preparing an ultrafiltration membrane solution:
dissolving the polysulfonate obtained in the step S1 into dimethylacetamide in the tank body (1), adding 5% of PEG-400 (polyethylene glycol), uniformly stirring the mixture, and intermittently vacuumizing the tank body (1);
s3: degassing an ultrafiltration membrane solution:
the conveying auger (211) is driven to rotate by the driving motor (22), so that the uniform mixed solution obtained in the step S2 is conveyed from the bottom end to the top end of the conveying cylinder (21), overflows downwards from the top end, and is matched with the upper deaeration disc (231) and the lower deaeration disc (232) which are uniformly arranged on the periphery of the conveying cylinder (21), so that the overflowed melt is guided, and in the process of guiding along the upper deaeration disc (231) and the lower deaeration disc (232), the flow spreading film is realized, and in the process of repeatedly flowing the film spreading film, bubbles in the melt are broken, and the deaeration and deaeration actions are realized;
s4: preparing a flat ultrafiltration membrane:
uniformly spreading the climatic ultrafiltration membrane solution in the step S3 in a clean glassware, rapidly placing in purified water for cooling and forming, and naturally airing the formed flat ultrafiltration membrane after being washed by ultrapure water.
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Cited By (1)
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| CN117679790A (en) * | 2024-02-04 | 2024-03-12 | 吉林省天成天然气有限公司 | Molecular sieve protection device |
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| CN117225017B (en) | 2024-01-30 |
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