CN115337694B - Medicine stoste filter equipment that contains fine particle - Google Patents
Medicine stoste filter equipment that contains fine particle Download PDFInfo
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- CN115337694B CN115337694B CN202210988386.6A CN202210988386A CN115337694B CN 115337694 B CN115337694 B CN 115337694B CN 202210988386 A CN202210988386 A CN 202210988386A CN 115337694 B CN115337694 B CN 115337694B
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- 239000010419 fine particle Substances 0.000 title claims abstract description 9
- 239000003814 drug Substances 0.000 title claims abstract description 8
- 229940079593 drug Drugs 0.000 title description 4
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 239000011550 stock solution Substances 0.000 claims abstract description 6
- 238000000746 purification Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 72
- 238000010438 heat treatment Methods 0.000 claims description 52
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 44
- 239000004917 carbon fiber Substances 0.000 claims description 44
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 44
- 239000004744 fabric Substances 0.000 claims description 39
- 229920005989 resin Polymers 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 32
- 239000005341 toughened glass Substances 0.000 claims description 28
- 238000003475 lamination Methods 0.000 claims description 25
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 17
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 7
- 229920006350 polyacrylonitrile resin Polymers 0.000 claims description 7
- 229920005990 polystyrene resin Polymers 0.000 claims description 7
- 238000012958 reprocessing Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 18
- 238000011084 recovery Methods 0.000 abstract description 12
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 description 13
- 238000012545 processing Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000007868 Raney catalyst Substances 0.000 description 3
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 3
- 229910000564 Raney nickel Inorganic materials 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0668—The layers being joined by heat or melt-bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
A medicine stock solution filtering device containing fine particles comprises a cavity to be filtered, and a purifying cavity is arranged below the cavity to be filtered; a separation plate is arranged between the cavity to be filtered and the purifying cavity, a plurality of communication holes are formed in the separation plate, a filter cylinder body is inserted into the communication holes, and the filter cylinder body is arranged in the cavity to be filtered; the filter cylinder comprises a support shell, and a filter screen is arranged on the outer side of the support shell; the support shell is provided with an annular fixing plate on one side of the purification cavity, and the end part of the filter screen is fixedly arranged between the annular fixing plate and the isolation plate. In order to avoid blockage, the application adopts an externally sleeved mode to conveniently carry out back flushing so as to avoid blockage, and the residual filtered residual liquid after recovery can be directly applied, so that the single recovery rate is lower, but the integral circulation recovery rate can be ensured, and the pressure drop of the recovery structure is very low.
Description
Technical Field
The application relates to a medicine stock solution filtering device containing fine particles.
Background
In the synthesis process of the raw medicine, hydrogenation is carried out by taking Raney nickel as a catalyst sometimes, then hydrogenation is carried out, because the Raney nickel has high specific surface area and very small granularity, the conventional filtering mode firstly cannot play a role in recovering Raney nickel, and secondly, the filtering component is easy to block, so that the filtering effect in the early stage is generally still satisfactory, but after a period of use, the blocking is caused, the filtering efficiency is reduced suddenly, and in this state, the filtering component is difficult to regenerate by itself.
Disclosure of Invention
In order to solve the problems, the application discloses a drug stock solution filtering device containing fine particles, which comprises a cavity to be filtered, wherein a purifying cavity is arranged below the cavity to be filtered; a separation plate is arranged between the cavity to be filtered and the purifying cavity, a plurality of communication holes are formed in the separation plate, a filter cylinder body is inserted into the communication holes, and the filter cylinder body is arranged in the cavity to be filtered; the filter cylinder comprises a support shell, and a filter screen is arranged on the outer side of the support shell; the support shell is provided with an annular fixing plate on one side of the purification cavity, and the end part of the filter screen is fixedly arranged between the annular fixing plate and the isolation plate. In order to avoid blockage, the application adopts an externally sleeved mode to conveniently carry out back flushing so as to avoid blockage, and the residual filtered residual liquid after recovery can be directly applied, so that the single recovery rate is lower, but the integral circulation recovery rate can be ensured, and the pressure drop of the recovery structure is very low.
Preferably, an upper inlet pipeline is arranged at the upper part of the filtering shell, and a side outlet pipeline is arranged at the bottom of the isolation plate; the bottom of the purifying cavity is provided with a lower guiding pipeline.
Preferably, the filter screen comprises a first filter layer, a supporting layer and a second filter layer which are sequentially arranged from top to bottom.
Preferably, the first filter layer and the second filter layer are polytetrafluoroethylene filter membranes, and the supporting layer is a carbon fiber net layer. The carbon fiber net layer provides an integral framework, polytetrafluoroethylene is arranged at the two sides and the middle part, polytetrafluoroethylene filtering films are formed at the inner side and the outer side, and structural deformation can be avoided on the basis of good self wear resistance and high strength.
Preferably, the filter screen is synthesized as follows:
mixing polytetrafluoroethylene resin, polyacrylonitrile resin and polystyrene resin to obtain mixed resin;
taking carbon fiber mesh cloth as a carrier, carrying out hot melting lamination on the mixed resin and the carbon fiber mesh cloth, wherein the lamination pressure is not lower than 15MPa, and the lamination time is not lower than 30min; in the case where the pressing pressure is maintained after the hot-melt pressing, the heat treatment is performed after the temperature is increased.
Preferably, the device further comprises a die, wherein the carbon fiber mesh cloth is arranged in the middle of the die, and mixed resins are respectively arranged on the upper side and the lower side of the carbon fiber mesh cloth.
Preferably, the height of the supporting layer is 0.1-0.15mm, and the thickness of the first filtering layer and the second filtering layer is 0.04-0.06mm.
Preferably, the die comprises an annular shell, a fixing channel for fixing carbon fiber mesh cloth is arranged in the middle of the annular shell, an upper pressing plate is arranged at the upper part of the annular shell, a lower pressing plate is arranged at the lower part of the annular shell, upper toughened glass is arranged on the surface of the upper pressing plate, lower toughened glass is arranged on the surface of the lower pressing plate, a plurality of upper microwave generators are uniformly distributed on the upper pressing plate relative to the inner side of the upper toughened glass, and a plurality of lower microwave generators are uniformly distributed on the lower pressing plate relative to the inner side of the lower toughened glass; the number of the upper microwave generators and the lower microwave generators is 9.
Preferably, the hot-melting pressing is heated by an upper microwave generator and a lower microwave generator, and the heating temperature is 300-350 ℃; the heat treatment temperature is 420-440 deg.C, and the time is 4-5min.
Preferably, after the lamination, the method further comprises a reprocessing process after the heat treatment, the pressure is reduced to 0.5-1MPa, then the intermittent heating is carried out by using an upper microwave generator and a lower microwave generator, the heating power is not lower than 300W, and the heating time and the heating interval are controlled to be not higher than 200 ℃ for 60-90s. According to the application, an integral membrane structure is formed firstly, and then intermittent heating is carried out, so that unsynchronized deformation is generated between the carbon fiber mesh cloth and the mixed resin, and gradual formation of a pore structure is further promoted, thereby ensuring the stability of the pore structure.
The application has the following beneficial effects:
1. In order to avoid blockage, the application adopts an externally sleeved mode to conveniently carry out back flushing so as to avoid blockage, and the residual filtered residual liquid after recovery can be directly applied, so that the single recovery rate is lower, but the integral circulation recovery rate can be ensured, and the pressure drop of the recovery structure is very low.
2. The carbon fiber net layer provides an integral framework, polytetrafluoroethylene is arranged at the two sides and the middle part, polytetrafluoroethylene filtering films are formed at the inner side and the outer side, and structural deformation can be avoided on the basis of good self wear resistance and high strength.
3. According to the application, an integral membrane structure is formed firstly, and then intermittent heating is carried out, so that unsynchronized deformation is generated between the carbon fiber mesh cloth and the mixed resin, and gradual formation of a pore structure is further promoted, thereby ensuring the stability of the pore structure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a schematic structural view of a separator;
FIG. 3 is a schematic diagram of a filter screen;
Fig. 4 is a schematic structural view of the mold.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the application is explained in detail by the following specific embodiments.
As shown in fig. 1-4, a drug stock solution filtering device containing fine particles comprises a cavity 1 to be filtered, and a purifying cavity 2 is arranged below the cavity 1 to be filtered; a separation plate 3 is arranged between the cavity 1 to be filtered and the purifying cavity 2, a plurality of communication holes 4 are arranged on the separation plate 3, a filter cylinder 5 is inserted into the communication holes 4, and the filter cylinder 5 is arranged in the cavity 1 to be filtered; the filter cylinder 5 comprises a support shell 6, and a filter screen 7 is arranged on the outer side of the support shell 6; the support housing 6 is provided with an annular fixing plate 8 at one side of the purification chamber 2, and the end portion of the filter screen 7 is fixedly arranged between the annular fixing plate 8 and the isolation plate 3. An upper inlet pipeline 9 is arranged at the upper part of the filtering shell 1, and a side outlet pipeline 10 is arranged at the bottom of the isolation plate 3; a lower outlet pipe 11 is provided at the bottom of the purification chamber 2. The filter screen 7 comprises a first filter layer 12, a supporting layer 13 and a second filter layer 14 which are sequentially arranged from top to bottom. The first filter layer 12 and the second filter layer 14 are polytetrafluoroethylene filter membranes, and the supporting layer 13 is a carbon fiber net layer.
The filter screen is synthesized according to the following mode:
mixing polytetrafluoroethylene resin, polyacrylonitrile resin and polystyrene resin to obtain mixed resin;
Taking carbon fiber mesh cloth as a carrier, firstly placing half of mixed resin into the range of an annular shell 15 and a lower pressing plate according to the capacity, then paving the carbon fiber mesh cloth, fixing two sides of the carbon fiber mesh cloth by using a fixing channel 16, then placing the other half of mixed resin, and then carrying out hot melting lamination on the mixed resin and the carbon fiber mesh cloth, wherein the lamination pressure is not lower than 15MPa, and the lamination time is not lower than 30min; in the case where the pressing pressure is maintained after the hot-melt pressing, the heat treatment is performed after the temperature is increased. The carbon fiber mesh cloth is arranged in the middle of the die, and mixed resin is respectively arranged on the upper side and the lower side of the carbon fiber mesh cloth. The height of the support layer 13 is 0.1-0.15mm, and the thickness of the first filter layer 12 and the second filter layer 14 is 0.04-0.06mm. The die comprises an annular shell 15, a fixing channel 16 for fixing carbon fiber mesh cloth is arranged in the middle of the annular shell 15, the outer side of the fixing channel 16 can be fixed in a clamping and stretching mode, an upper pressing plate 17 is arranged at the upper part of the annular shell 15, a lower pressing plate 18 is arranged at the lower part of the annular shell 15, upper toughened glass 19 is arranged on the surface of the upper pressing plate 17, lower toughened glass 20 is arranged on the surface of the lower pressing plate 18, a plurality of upper microwave generators 21 are uniformly distributed on the inner side of the upper pressing plate 17 relative to the upper toughened glass 19, and a plurality of lower microwave generators 22 are uniformly distributed on the inner side of the lower pressing plate 18 relative to the lower toughened glass 20; the number of the upper and lower microwave generators 21 and 22 is 9, the sizes of the upper and lower pressing plates 17 and 18 are 500mm by 500mm, and the heating power of the upper and lower microwave generators 21 and 22 is 500W at the maximum. The hot melt lamination is heated by the upper microwave generator 21 and the lower microwave generator 22, and the heating temperature is 300-350 ℃; the heat treatment temperature is 420-440 deg.C, and the time is 4-5min. After lamination, the method also comprises a reprocessing process after heat treatment, the pressure is reduced to 0.5-1MPa, then the upper microwave generator and the lower microwave generator are utilized for intermittent heating, the heating power is not lower than 300W, and the heating time and the heating interval are controlled to control the temperature not higher than 200 ℃ for 60-90s. The upper platen and the lower platen are pressurized by means of a piston cylinder or the like.
The filter screen is synthesized by the following steps:
s1, mixing polytetrafluoroethylene resin, polyacrylonitrile resin and polystyrene resin to obtain mixed resin;
S2, taking carbon fiber mesh cloth as a carrier, and carrying out hot melting lamination on the mixed resin and the carbon fiber mesh cloth, wherein the lamination pressure is not lower than 15MPa, and the lamination time is not lower than 30min;
S3, under the condition that the pressing pressure is kept after hot melting and pressing, performing heat treatment after the temperature is increased, arranging carbon fiber mesh cloth in the middle of a die, and arranging mixed resin on the upper side and the lower side of the carbon fiber mesh cloth respectively; the height of the supporting layer is 0.1-0.15mm, and the thickness of the first filtering layer and the second filtering layer is 0.04-0.06mm.
When the processing is performed, a die is adopted for processing, the die comprises an annular shell, a fixing channel for fixing carbon fiber mesh cloth is arranged in the middle of the annular shell, an upper pressing plate is arranged at the upper part of the annular shell, a lower pressing plate is arranged at the lower part of the annular shell, upper toughened glass is arranged on the surface of the upper pressing plate, lower toughened glass is arranged on the surface of the lower pressing plate, a plurality of upper microwave generators are uniformly distributed on the upper pressing plate relative to the inner side of the upper toughened glass, and a plurality of lower microwave generators are uniformly distributed on the lower pressing plate relative to the inner side of the lower toughened glass; the number of the upper microwave generators and the lower microwave generators is 9, the sizes of the upper pressing plate and the lower pressing plate are 500mm by 500mm, and the heating power of the upper microwave generators and the lower microwave generators is 500W at most. The hot melting pressing is heated by an upper microwave generator and a lower microwave generator, and the heating temperature is 300-350 ℃; the temperature of the heat treatment is 420-440 ℃ and the time is 4-5min;
S4, reprocessing:
the pressure is reduced to 0.5-1MPa, then the upper microwave generator and the lower microwave generator are utilized to intermittently heat the material, the heating power is not lower than 300W, and the heating time and the heating interval are controlled to control the temperature not higher than 200 ℃ for 60-90s.
For the filter screen, the following synthesis is performed:
example 1:
s1, mixing 6kg of polytetrafluoroethylene resin, 1kg of polyacrylonitrile resin and 0.5kg of polystyrene resin to obtain mixed resin;
S2, taking carbon fiber mesh cloth with the thickness of 0.1mm and the space size of 10mm as a carrier, and carrying out hot melting lamination on the mixed resin and the carbon fiber mesh cloth, wherein the lamination pressure is 15MPa, and the lamination time is 30min;
S3, under the condition that the pressing pressure is kept after hot melting and pressing, performing heat treatment after the temperature is increased, arranging carbon fiber mesh cloth in the middle of a die, and arranging mixed resin on the upper side and the lower side of the carbon fiber mesh cloth respectively; the height of the support layer was 0.1mm, and the thickness of the first filter layer and the second filter layer was 0.04mm.
When the processing is performed, a die is adopted for processing, the die comprises an annular shell, a fixing channel for fixing carbon fiber mesh cloth is arranged in the middle of the annular shell, an upper pressing plate is arranged at the upper part of the annular shell, a lower pressing plate is arranged at the lower part of the annular shell, upper toughened glass is arranged on the surface of the upper pressing plate, lower toughened glass is arranged on the surface of the lower pressing plate, a plurality of upper microwave generators are uniformly distributed on the upper pressing plate relative to the inner side of the upper toughened glass, and a plurality of lower microwave generators are uniformly distributed on the lower pressing plate relative to the inner side of the lower toughened glass; the number of the upper microwave generators and the lower microwave generators is 9, the sizes of the upper pressing plate and the lower pressing plate are 500mm by 500mm, and the heating power of the upper microwave generators and the lower microwave generators is 500W at most. The hot melting pressing is heated by an upper microwave generator and a lower microwave generator, and the heating temperature is 300 ℃; the temperature of the heat treatment is 420 ℃ and the time is 5min;
S4, reprocessing:
The pressure is reduced to 0.5MPa, then the upper microwave generator and the lower microwave generator are utilized to intermittently heat the material, the heating power is not lower than 300W, and the heating time and the heating interval are controlled so that the control temperature is not higher than 200 ℃, and the total time is controlled to be 90s.
The test was carried out according to the method described in standard GB/T32361-2015 in μm: soaking a sample to be tested by using low surface tension liquid to ensure that all pores are filled with wetting liquid; the sample was mounted on a jig, vented, and the gas pressure was increased gradually. As the gas pressure increases, the surface tension of the liquid is overcome until the liquid is expelled from the pores, and the relationship between the gas pressure and the gas flow during this process is recorded, called the "wet" curve; after all the liquid is discharged, the relation between the gas pressure and the gas flow is recorded and is called a dry curve; the average pore size was calculated from the "dry" and "wet" curves and found to be 5.9 μm.
The tensile strength was 7.3MPa as measured according to GB/T1040.3-2006.
Example 2:
s1, mixing 8kg of polytetrafluoroethylene resin, 2kg of polyacrylonitrile resin and 1kg of polystyrene resin to obtain mixed resin;
S2, taking carbon fiber mesh cloth with the thickness of 0.15mm and the space size of 10mm as a carrier, and carrying out hot melting lamination on the mixed resin and the carbon fiber mesh cloth, wherein the lamination pressure is 15MPa, and the lamination time is 30min;
S3, under the condition that the pressing pressure is kept after hot melting and pressing, performing heat treatment after the temperature is increased, arranging carbon fiber mesh cloth in the middle of a die, and arranging mixed resin on the upper side and the lower side of the carbon fiber mesh cloth respectively; the height of the support layer was 0.15mm, and the thickness of the first filter layer and the second filter layer was 0.06mm.
When the processing is performed, a die is adopted for processing, the die comprises an annular shell, a fixing channel for fixing carbon fiber mesh cloth is arranged in the middle of the annular shell, an upper pressing plate is arranged at the upper part of the annular shell, a lower pressing plate is arranged at the lower part of the annular shell, upper toughened glass is arranged on the surface of the upper pressing plate, lower toughened glass is arranged on the surface of the lower pressing plate, a plurality of upper microwave generators are uniformly distributed on the upper pressing plate relative to the inner side of the upper toughened glass, and a plurality of lower microwave generators are uniformly distributed on the lower pressing plate relative to the inner side of the lower toughened glass; the number of the upper microwave generators and the lower microwave generators is 9, the sizes of the upper pressing plate and the lower pressing plate are 500mm by 500mm, and the heating power of the upper microwave generators and the lower microwave generators is 500W at most. The hot melting pressing is heated by an upper microwave generator and a lower microwave generator, and the heating temperature is 350 ℃; the temperature of the heat treatment is 440 ℃ and the time is 4min;
S4, reprocessing:
The pressure is reduced to 1MPa, then the upper microwave generator and the lower microwave generator are utilized to intermittently heat the furnace, the heating power is not lower than 300W, and the heating time and the heating interval are controlled to control the temperature not higher than 200 ℃ and the total time is controlled to be 60s.
The test was carried out according to the method described in standard GB/T32361-2015 in μm: soaking a sample to be tested by using low surface tension liquid to ensure that all pores are filled with wetting liquid; the sample was mounted on a jig, vented, and the gas pressure was increased gradually. As the gas pressure increases, the surface tension of the liquid is overcome until the liquid is expelled from the pores, and the relationship between the gas pressure and the gas flow during this process is recorded, called the "wet" curve; after all the liquid is discharged, the relation between the gas pressure and the gas flow is recorded and is called a dry curve; the average pore size was calculated from the "dry" and "wet" curves and found to be 6.4 μm.
The tensile strength was 7.1MPa as measured according to GB/T1040.3-2006.
Comparative example 1:
s1, mixing 8kg of polytetrafluoroethylene resin, 2kg of polyacrylonitrile resin and 1kg of polystyrene resin to obtain mixed resin;
S2, taking carbon fiber mesh cloth with the thickness of 0.15mm and the space size of 10mm as a carrier, and carrying out hot melting lamination on the mixed resin and the carbon fiber mesh cloth, wherein the lamination pressure is 15MPa, and the lamination time is 30min;
S3, under the condition that the pressing pressure is kept after hot melting and pressing, performing heat treatment after the temperature is increased, arranging carbon fiber mesh cloth in the middle of a die, and arranging mixed resin on the upper side and the lower side of the carbon fiber mesh cloth respectively; the height of the support layer was 0.15mm, and the thickness of the first filter layer and the second filter layer was 0.06mm.
When the processing is performed, a die is adopted for processing, the die comprises an annular shell, a fixing channel for fixing carbon fiber mesh cloth is arranged in the middle of the annular shell, an upper pressing plate is arranged at the upper part of the annular shell, a lower pressing plate is arranged at the lower part of the annular shell, upper toughened glass is arranged on the surface of the upper pressing plate, lower toughened glass is arranged on the surface of the lower pressing plate, a plurality of upper microwave generators are uniformly distributed on the upper pressing plate relative to the inner side of the upper toughened glass, and a plurality of lower microwave generators are uniformly distributed on the lower pressing plate relative to the inner side of the lower toughened glass; the number of the upper microwave generators and the lower microwave generators is 9, the sizes of the upper pressing plate and the lower pressing plate are 500mm by 500mm, and the heating power of the upper microwave generators and the lower microwave generators is 500W at most. The hot melting pressing is heated by an upper microwave generator and a lower microwave generator, and the heating temperature is 350 ℃; the temperature of the heat treatment is 440 ℃ and the time is 4min;
The test was carried out according to the method described in standard GB/T32361-2015 in μm: soaking a sample to be tested by using low surface tension liquid to ensure that all pores are filled with wetting liquid; the sample was mounted on a jig, vented, and the gas pressure was increased gradually. As the gas pressure increases, the surface tension of the liquid is overcome until the liquid is expelled from the pores, and the relationship between the gas pressure and the gas flow during this process is recorded, called the "wet" curve; after all the liquid is discharged, the relation between the gas pressure and the gas flow is recorded and is called a dry curve; the average pore size was calculated from the "dry" and "wet" curves and found to be 2.4 μm.
The tensile strength was 8.7MPa as measured according to GB/T1040.3-2006.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (3)
1. A medicine stoste filter equipment that contains fine particle, its characterized in that: comprises a cavity to be filtered, and a purifying cavity is arranged below the cavity to be filtered; a separation plate is arranged between the cavity to be filtered and the purifying cavity, a plurality of communication holes are formed in the separation plate, a filter cylinder body is inserted into the communication holes, and the filter cylinder body is arranged in the cavity to be filtered; the filter cylinder comprises a support shell, and a filter screen is arranged on the outer side of the support shell; the support shell is provided with an annular fixing plate at one side of the purification cavity, and the end part of the filter screen is fixedly arranged between the annular fixing plate and the isolation plate;
The filter screen comprises a first filter layer, a supporting layer and a second filter layer which are sequentially arranged from top to bottom;
The first filter layer and the second filter layer are polytetrafluoroethylene filter membranes, and the supporting layer is a carbon fiber net layer;
The filter screen is synthesized according to the following mode:
mixing polytetrafluoroethylene resin, polyacrylonitrile resin and polystyrene resin to obtain mixed resin;
taking carbon fiber mesh cloth as a carrier, carrying out hot melting lamination on the mixed resin and the carbon fiber mesh cloth, wherein the lamination pressure is not lower than 15MPa, and the lamination time is not lower than 30min; under the condition that the pressing pressure is kept after the hot melting pressing, the temperature is increased and then the heat treatment is carried out;
The height of the supporting layer is 0.1-0.15mm, and the thickness of the first filtering layer and the second filtering layer is 0.04-0.06mm;
the carbon fiber mesh cloth is arranged in the middle of the die, and mixed resin is respectively arranged on the upper side and the lower side of the carbon fiber mesh cloth;
The die comprises an annular shell, wherein a fixing channel for fixing carbon fiber mesh cloth is arranged in the middle of the annular shell, an upper pressing plate is arranged at the upper part of the annular shell, a lower pressing plate is arranged at the lower part of the annular shell, upper toughened glass is arranged on the surface of the upper pressing plate, lower toughened glass is arranged on the surface of the lower pressing plate, a plurality of upper microwave generators are uniformly distributed on the upper pressing plate relative to the inner side of the upper toughened glass, and a plurality of lower microwave generators are uniformly distributed on the lower pressing plate relative to the inner side of the lower toughened glass;
the hot melting pressing is heated by an upper microwave generator and a lower microwave generator, and the heating temperature is 300-350 ℃; the temperature of the heat treatment is 420-440 ℃ and the time is 4-5min;
After lamination, the method also comprises a reprocessing process after heat treatment, the pressure is reduced to 0.5-1MPa, then the upper microwave generator and the lower microwave generator are utilized for intermittent heating, the heating power is not lower than 300W, and the heating time and the heating interval are controlled to control the temperature not higher than 200 ℃ for 60-90s.
2. The fine particle-containing pharmaceutical stock solution filtration device according to claim 1, wherein: an upper inlet pipeline is arranged at the upper part of the cavity to be filtered, and a side outlet pipeline is arranged at the bottom of the isolation plate; the bottom of the purifying cavity is provided with a lower guiding pipeline.
3. The fine particle-containing pharmaceutical stock solution filtration device according to claim 1, wherein: the number of the upper microwave generators and the lower microwave generators is 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210988386.6A CN115337694B (en) | 2022-08-17 | 2022-08-17 | Medicine stoste filter equipment that contains fine particle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210988386.6A CN115337694B (en) | 2022-08-17 | 2022-08-17 | Medicine stoste filter equipment that contains fine particle |
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| CN115337694A CN115337694A (en) | 2022-11-15 |
| CN115337694B true CN115337694B (en) | 2024-06-21 |
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| CN102274650A (en) * | 2011-07-26 | 2011-12-14 | 合肥三番水处理设备有限公司 | Highly-integrated hollow fiber column filter |
| CN109641413A (en) * | 2016-08-24 | 2019-04-16 | 沙特基础工业全球技术有限公司 | Device and method for manufacturing composite construction |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6994908B1 (en) * | 1998-08-18 | 2006-02-07 | Daikin Industries, Ltd. | Polytetrafluoroethylene laminated article |
| CN101161328A (en) * | 2006-10-12 | 2008-04-16 | 姚宇 | Slagoff type stereo filter |
| CN102516037B (en) * | 2011-11-25 | 2014-03-19 | 锡矿山闪星锑业有限责任公司 | Method for preparing ethylene glycol antimony ester by rapid impurity removal and decoloration |
| CN205549840U (en) * | 2016-04-06 | 2016-09-07 | 天津清科环保科技有限公司 | High accuracy, high temperature resistant filter material of high strength |
| CN106693517A (en) * | 2016-08-12 | 2017-05-24 | 浙江大学昆山创新中心 | Preparation method of flame-resistant membrane-laminating filtering material capable of being cured at room temperature and repeatedly utilized |
| CN207401264U (en) * | 2017-08-31 | 2018-05-25 | 浙江华基环保科技有限公司 | A kind of novel dust removing filter felt |
| CN108499261B (en) * | 2018-04-20 | 2020-09-22 | 江苏绿地环保滤材有限公司 | Remove antibiotic environmental protection dust collector of peculiar smell |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274650A (en) * | 2011-07-26 | 2011-12-14 | 合肥三番水处理设备有限公司 | Highly-integrated hollow fiber column filter |
| CN109641413A (en) * | 2016-08-24 | 2019-04-16 | 沙特基础工业全球技术有限公司 | Device and method for manufacturing composite construction |
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