CN111533204B - High-performance activated carbon purification filter element and preparation method thereof - Google Patents
High-performance activated carbon purification filter element and preparation method thereof Download PDFInfo
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- CN111533204B CN111533204B CN202010392596.XA CN202010392596A CN111533204B CN 111533204 B CN111533204 B CN 111533204B CN 202010392596 A CN202010392596 A CN 202010392596A CN 111533204 B CN111533204 B CN 111533204B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 238000000746 purification Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 83
- 238000002156 mixing Methods 0.000 claims abstract description 42
- 239000011230 binding agent Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002808 molecular sieve Substances 0.000 claims abstract description 14
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010455 vermiculite Substances 0.000 claims abstract description 14
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 14
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 14
- 239000010457 zeolite Substances 0.000 claims abstract description 14
- 235000013162 Cocos nucifera Nutrition 0.000 claims abstract description 12
- 244000060011 Cocos nucifera Species 0.000 claims abstract description 12
- 239000011812 mixed powder Substances 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 238000007873 sieving Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 9
- 230000001954 sterilising effect Effects 0.000 abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000002245 particle Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
- B01F27/1921—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements comprising helical elements and paddles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/165—Natural alumino-silicates, e.g. zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a high-performance activated carbon purification filter element, which comprises the following raw materials: 70-80 parts of coconut shell activated carbon, 10-15 parts of ultra-high molecular binder, 5-20 parts of vermiculite and 10-15 parts of zeolite molecular sieve. The invention also discloses a preparation method of the high-performance activated carbon purification filter element, which comprises the following steps: step one, respectively grinding and sieving the coconut shell activated carbon, the ultra-high molecular binder, the vermiculite and the zeolite molecular sieve in parts by weight to 250-400 meshes, sequentially mixing and stirring for 1-2 hours, and preheating to 45-55 ℃ to obtain mixed powder; and step two, cooling the mixed powder to room temperature after extrusion molding, and then cutting to obtain the filter element. The ultrahigh molecular binder is preheated to form a better viscous state, is uniformly mixed with other raw materials, prevents the raw materials from forming a layering phenomenon, has the porosity higher than 60 percent, has the filtering efficiency of more than 98.5 percent, and has the sterilization rate of 99.1 percent.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a high-performance activated carbon purification filter element and a preparation method thereof.
Background
Activated carbon is a carbonaceous material with developed pores and an adsorption effect, and is widely applied to the field of water purifiers. The activated carbon can effectively remove chromaticity, smell, particles, bacteria, harmful chemical components, partial heavy metal ions and the like in water, thereby ensuring the safety of drinking water. In the purification process of water, because great gap between granule, at certain water pressure, because the velocity of water flow is very fast, the contact time of water and granule active carbon is very short, and the adsorption affinity is not strong, and forms clearance filtration easily for partly water contact can not reach active carbon, can not reach thorough filterable effect. The granular activated carbon has low strength and is easy to fall off under the action of certain water flow pressure, so that black water is generated to pollute the water quality; under the action of water flow scouring, the activated carbon particles mutually roll and rub, so that impurities adsorbed on the surfaces are easy to desorb, and secondary pollution to water quality is caused.
Compared with the traditional powdered activated carbon and granular activated carbon, the activated carbon filter core has higher bulk density, strength and specific surface area per unit volume, and is convenient to store, transport and install. The main forming mode of the existing activated carbon filter element is a sintering method, namely, the activated carbon powder and a binder are mixed according to a certain proportion and then are placed into a mould, the mould is placed into a furnace for heating after pressure is applied, and the mould is demoulded after cooling forming.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a high-performance activated carbon purification filter element and a preparation method thereof, wherein the ultrahigh molecular binder forms a viscous state better, the vermiculite and the zeolite molecular sieve enhance the porosity of the filter element, the filter element is uniformly mixed, the layering phenomenon among the raw materials is prevented, the porosity is higher than 60%, the filtration efficiency is more than 98.5%, and the sterilization rate reaches 99.1%.
Compared with the porosity (40-60%) of the filter element prepared by the existing sintering method, the porosity (80-90%) of the filter element prepared by the method after mixing through the mixing device disclosed by the invention is obviously improved.
To achieve these objects and other advantages in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a high performance activated carbon purification cartridge comprising: 70-80 parts of coconut shell activated carbon, 10-15 parts of ultra-high molecular binder, 5-20 parts of vermiculite and 10-15 parts of zeolite molecular sieve.
The invention also provides a high-performance activated carbon purification filter element and a preparation method thereof, and the preparation method comprises the following steps:
respectively grinding and sieving the coconut shell activated carbon, the ultra-high molecular binder, the vermiculite and the zeolite molecular sieve in parts by weight to 250-400 meshes, sequentially mixing and stirring for 1-2 hours, and preheating to 45-55 ℃ to obtain mixed powder;
and step two, cooling the mixed powder to room temperature after extrusion molding, and then cutting to obtain the high-performance activated carbon purification filter element.
Preferably, the ultra-high molecular binder has a molecular weight of 150 to 600 ten thousand.
Preferably, the mixing and stirring in the first step are performed in a mixing device comprising:
the sealing plug is arranged on the feeding hole and is connected with the shell through an adjusting assembly, the adjusting assembly comprises a fixing plate horizontally arranged on the outer wall of the shell, a telescopic rod vertically arranged on the fixing plate, a horizontal rod with one end rotatably arranged at the top of the telescopic rod and a vertical rod fixedly connected with the other end of the horizontal rod, and the sealing plug is fixedly arranged at the lower end of the vertical rod; a filter screen and a valve are arranged at the discharge port from top to bottom; an exhaust pipe is arranged in the exhaust hole, one end of the exhaust pipe extends into the shell, the other end of the exhaust pipe is communicated with the vacuum pump, an inclined blocking net is arranged in the shell, and the blocking net is positioned right below the exhaust pipe;
the stirring mechanism comprises a nut, a screw rod, a stirring rod and a plurality of stirring blades, wherein the nut is fixedly arranged at the top of the shell, the screw rod penetrates through the nut and vertically penetrates through the top of the shell, the stirring rod is vertically and fixedly arranged at the lower end of the screw rod, a plurality of stirring needles are arranged on the stirring rod at intervals, the stirring needles are triangular bodies or quadrangular bodies, the stirring blades are arranged around the stirring rod at intervals, the stirring blades comprise a first stirring part and a second stirring part, the first stirring part comprises a pair of first arc-shaped ribs with one ends fixedly arranged on the stirring rod and a connecting rib connected with the other end of the pair of first arc-shaped ribs, the second stirring part comprises a pair of second arc-shaped ribs which are oppositely arranged, one ends of the pair of second arc-shaped ribs are fixedly arranged on the stirring rod, the other ends of the pair of second arc-shaped ribs are connected with the connecting rib through vertical ribs, wherein, a plurality of stirring rings are arranged on the pair of first arc-shaped ribs and the pair of second arc-shaped ribs and formed by spirally winding strip-shaped sheets;
and the driving mechanism comprises a positioning cover arranged at the top of the shell, a spring with one end fixedly arranged on the top wall inside the positioning cover, and a motor fixedly connected with the other end of the spring, wherein an output shaft of the motor vertically faces downwards and is connected with the top of the screw rod.
Preferably, the mesh aperture of the filter screen is not more than 1 mm.
Preferably, the lower end of the stirring rod is of a conical structure.
Preferably, the lateral wall of casing is equipped with the access window, be equipped with the switching door on the access window, be equipped with a pair of positioning rail in the casing, a pair of positioning rail is located respectively on the relative both sides wall of casing, a pair of positioning rail is parallel to each other, and its one end is all the top rigid coupling of casing, the other end all the switching door contact, all be equipped with the rubber layer in a pair of positioning rail, the barrier net is the rectangular net, and its slip inserts in a pair of positioning rail.
Preferably, the shell is supported by a pair of brackets, and each bracket comprises a fixed block fixedly connected with the outer wall of the shell and a support rod vertically arranged below the fixed block.
The invention at least comprises the following beneficial effects:
according to the invention, the raw materials are mixed by adopting the mixing device with the three-dimensional stirring mechanism in the preparation process of the high-performance activated carbon purification filter element, after the raw materials are added into the mixing device, the mixing device is vacuumized firstly, so that the mixing process is carried out in a vacuumizing environment, and during mixing, the screw rod is driven by the motor to promote the stirring blades to move up and down and rotate, the first stirring part is positioned at the periphery of the second stirring part, and forms three-dimensional stirring together with the stirring rod during rotation, so that the raw materials are mixed in all directions and are uniformly mixed, the phenomenon of layering among the raw materials is prevented, the filter element is difficult to form, and the raw materials are prevented from being clamped in the forming sleeve in the subsequent extrusion process.
The method is used for preheating after mixing, so that the ultra-high molecular binder can better form a viscous state, active carbon particles can be better bonded, pores of the active carbon are not blocked, and the problems that the binder is cooled due to nonuniform heating, the bonding property is reduced, raw materials cannot be bonded, and the filter element is difficult to form are prevented. The addition of vermiculite and zeolite molecular sieve in the invention enhances the porosity and purification capability of the filter element.
After being mixed by the mixing device, the filter element prepared by the method has the porosity higher than 60%, the filtering efficiency higher than 98.5% and the sterilization rate up to 99.1%. Compared with the porosity (40-60%) of the filter element prepared by the existing sintering method and the filtering efficiency (80-90%), the invention has obvious improvement.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the mixing apparatus of the present invention.
Detailed Description
The present invention is further described in detail below with reference to examples and the accompanying drawings so that those skilled in the art can implement the invention by referring to the description.
The mixing and stirring in the first step of examples 1 to 3 of the present invention were all carried out in a mixing apparatus, as shown in fig. 1, comprising:
the device comprises a shell 1, wherein the top of the shell is provided with a feeding hole 11 and an exhaust hole 12, the bottom of the shell is provided with a discharging hole 13, a sealing plug 14 is arranged on the feeding hole 11, the sealing plug 14 is connected with the shell 1 through an adjusting assembly, the adjusting assembly comprises a fixing plate 140 horizontally arranged on the outer wall of the shell 1, an expansion link 142 vertically arranged on the fixing plate 140, a horizontal rod 144 with one end rotatably arranged on the top of the expansion link 142, and a vertical rod 146 fixedly connected with the other end of the horizontal rod 144, and the sealing plug 14 is fixedly arranged at the lower end of the vertical rod 146; a filter screen 130 and a valve 132 are arranged at the discharge port 13 from top to bottom; an exhaust pipe 120 is arranged in the exhaust hole 12, one end of the exhaust pipe 120 extends into the shell 1, the other end of the exhaust pipe is communicated with a vacuum pump 122, an inclined blocking net 124 is arranged in the shell 1, and the blocking net 124 is positioned right below the exhaust pipe 120;
rabbling mechanism, it includes nut 21, screw rod 22, stirring rod 23, a plurality of stirring leaf, nut 21 sets firmly the top of casing 1, screw rod 22 passes nut 21 and vertical running through the top of casing 1, stirring rod 23 is vertical to be set firmly the lower extreme of screw rod 22, the interval sets up a plurality of stirring needles 230 on the stirring rod 23, stirring needle 230 is three pyramids or four pyramids, and a plurality of stirring leaf encircle stirring rod 23 interval sets up, the stirring leaf includes first stirring portion and second stirring portion, first stirring portion includes that one end all sets firmly a pair of first arc muscle 241 on the stirring rod 23, connect the splice bar 242 of the other end of a pair of first arc muscle 241, second stirring portion includes a pair of second arc muscle 243 of relative setting, and the one end of a pair of second arc muscle 243 all sets firmly on the stirring rod 23, The other end of the first arc rib is connected with the connecting rib 242 through a vertical rib 244, wherein a plurality of stirring rings 245 are arranged on the pair of first arc ribs 241 and the pair of second arc ribs 243, and the stirring rings 245 are formed by spirally winding strip-shaped sheets;
and the driving mechanism comprises a positioning cover 31 arranged at the top of the shell 1, a spring 32 with one end fixedly arranged on the top wall inside the positioning cover 31, and a motor 33 fixedly connected with the other end of the spring 32, wherein an output shaft of the motor 33 is vertically downward and connected with the top of the screw rod 22.
Wherein,
the aperture of the filter screen 130 is not larger than 1 mm.
The lower end of the stirring rod 23 is of a conical structure.
The side wall of casing 1 is equipped with the access window, be equipped with the switching door on the access window, be equipped with a pair of location track in the casing 1, a pair of location track is located respectively on the relative both sides wall of casing 1, a pair of location track is parallel to each other, and its one end all the top rigid coupling of casing 1, the other end all with the switching door contact, all be equipped with the rubber layer in a pair of location track, block net 124 and be the rectangular net, its slip inserts in a pair of location track.
The shell 1 is supported by a pair of supports, and each support comprises a fixed block fixedly connected with the outer wall of the shell 1 and a support rod vertically arranged below the fixed block.
During the use, add the casing with the raw materials through the feed inlet in, cover the sealing plug, through the evacuation pump vacuum pumping processing in to the casing, the separation net can prevent to inhale powdered raw materials because of the suction of evacuation pump, and causes the blast pipe to block up. After the vacuum pumping treatment is finished, the motor is started to enable the screw rod to move up and down and rotate, the stirring rod and the stirring blade are driven to move up and down and rotate simultaneously, raw materials in the shell are mixed, after the mixing is finished, the valve at the discharge port is opened, and the mixed materials flow out of the discharge port after being filtered by the filter screen.
< example 1>
The invention provides a high-performance activated carbon purification filter element, which comprises the following raw materials: 70 parts of coconut shell activated carbon, 10 parts of ultra-high molecular binder, 5 parts of vermiculite and 10 parts of zeolite molecular sieve.
The invention also provides a high-performance activated carbon purification filter element and a preparation method thereof, wherein the preparation method comprises the following steps:
respectively grinding and sieving the coconut shell activated carbon, the ultra-high molecular binder, the vermiculite and the zeolite molecular sieve in parts by weight to 250 meshes, sequentially mixing and stirring for 1 hour, and preheating to 45 ℃ to obtain mixed powder;
and step two, cooling the mixed powder to room temperature after extrusion molding, and then cutting to obtain the high-performance activated carbon purification filter element.
Wherein the molecular weight of the ultra-high molecular binder is 150 ten thousand.
When cutting, the filter core is sent into a cutting machine to be cut into a set length, and the cut high-performance activated carbon purification filter core is subjected to length and air tightness detection through automatic detection, so that a qualified filter core is finally obtained.
The mixing and stirring are carried out in a mixing device.
The porosity of the filter element obtained by the embodiment is 62.8%, the filtering efficiency is more than 98.5%, and the sterilization rate can reach 99.1%.
< example 2>
The invention provides a high-performance activated carbon purification filter element, which comprises the following raw materials: 70 parts of coconut shell activated carbon, 10 parts of ultra-high molecular binder, 5 parts of vermiculite and 10 parts of zeolite molecular sieve.
The invention also provides a high-performance activated carbon purification filter element and a preparation method thereof, wherein the preparation method comprises the following steps:
respectively grinding and sieving the coconut shell activated carbon, the ultra-high molecular binder, the vermiculite and the zeolite molecular sieve in parts by weight to 250 meshes, sequentially mixing and stirring for 1 hour, and preheating to 45 ℃ to obtain mixed powder;
and step two, cooling the mixed powder to room temperature after extrusion molding, and then cutting to obtain the high-performance activated carbon purification filter element.
Wherein the molecular weight of the ultra-high molecular binder is 300 ten thousand.
When cutting, the filter core is sent into a cutting machine to be cut into a set length, and the cut high-performance activated carbon purification filter core is automatically detected to detect the length and the air tightness, so that the qualified filter core is finally obtained.
The mixing and stirring are carried out in a mixing device.
The porosity of the filter element obtained by the embodiment is 72.8%, the filtering efficiency is more than 98.5%, and the sterilization rate can reach 99.1%.
< example 3>
The invention provides a high-performance activated carbon purification filter element, which comprises the following raw materials: 70 parts of coconut shell activated carbon, 10 parts of ultra-high molecular binder, 5 parts of vermiculite and 10 parts of zeolite molecular sieve.
The invention also provides a high-performance activated carbon purification filter element and a preparation method thereof, and the preparation method comprises the following steps:
respectively grinding and sieving the coconut shell activated carbon, the ultra-high molecular binder, the vermiculite and the zeolite molecular sieve in parts by weight to 250 meshes, sequentially mixing and stirring for 1h, and preheating to 45 ℃ to obtain mixed powder;
and step two, cooling the mixed powder to room temperature after extrusion molding, and then cutting to obtain the high-performance activated carbon purification filter element.
Wherein the molecular weight of the ultra-high molecular binder is 400 ten thousand.
When cutting, the filter core is sent into a cutting machine to be cut into a set length, and the cut high-performance activated carbon purification filter core is subjected to length and air tightness detection through automatic detection, so that a qualified filter core is finally obtained.
The mixing and stirring are carried out in a mixing device.
The porosity of the filter element obtained by the embodiment is 64.8%, the filtering efficiency is more than 98.5%, and the sterilization rate can reach 99.1%.
According to the invention, a mixing device with a three-dimensional stirring mechanism is adopted to mix raw materials in the preparation process of the high-performance activated carbon purification filter element, after the raw materials are added into the mixing device, the mixing device is vacuumized firstly, so that the mixing process is carried out in a vacuumized environment, and during mixing, the screw 22 is driven by the motor 33 to promote the stirring blades to move up and down and rotate at the same time, the first stirring part is positioned at the periphery of the second stirring part, and forms three-dimensional stirring together with the stirring rod 23 during rotation, so that the raw materials are mixed in all directions and uniformly mixed, the phenomenon of layering among the raw materials is prevented, the filter element is difficult to form, and the raw materials are prevented from being clamped in a forming sleeve in the subsequent extrusion process. The ultrahigh molecular binder is preheated after mixing, so that the ultrahigh molecular binder can better form a viscous state, activated carbon particles can be better bound, the pores of the activated carbon particles are not blocked, and finally, the porosity of the filter element prepared by the method is higher than 60%, the filtering efficiency is over 98.5%, and the sterilization rate reaches 99.1%.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the details shown in the description and the examples, which are set forth, but are fully applicable to various fields of endeavor as are suited to the particular use contemplated, and further modifications will readily occur to those skilled in the art, since the invention is not limited to the details shown and described without departing from the general concept as defined by the appended claims and their equivalents.
Claims (6)
1. The preparation method of the high-performance activated carbon purification filter element is characterized by comprising the following raw materials: 70-80 parts of coconut shell activated carbon, 10-15 parts of ultra-high molecular binder, 5-20 parts of vermiculite and 10-15 parts of zeolite molecular sieve;
the preparation method comprises the following steps:
step one, respectively grinding and sieving the coconut shell activated carbon, the ultra-high molecular binder, the vermiculite and the zeolite molecular sieve in parts by weight to 250-400 meshes, sequentially mixing and stirring for 1-2 hours, and preheating to 45-55 ℃ to obtain mixed powder;
step two, cooling the mixed powder to room temperature after extrusion molding, and then cutting to obtain the high-performance activated carbon purification filter element;
the mixing and stirring in the first step are carried out in a mixing device, and the mixing device comprises:
the sealing plug is arranged on the feeding hole and is connected with the shell through an adjusting assembly, the adjusting assembly comprises a fixing plate horizontally arranged on the outer wall of the shell, a telescopic rod vertically arranged on the fixing plate, a horizontal rod with one end rotatably arranged at the top of the telescopic rod and a vertical rod fixedly connected with the other end of the horizontal rod, and the sealing plug is fixedly arranged at the lower end of the vertical rod; a filter screen and a valve are arranged at the discharge port from top to bottom; an exhaust pipe is arranged in the exhaust hole, one end of the exhaust pipe extends into the shell, the other end of the exhaust pipe is communicated with the vacuum pump, an inclined blocking net is arranged in the shell, and the blocking net is positioned right below the exhaust pipe;
the stirring mechanism comprises a nut, a screw rod, a stirring rod and a plurality of stirring blades, wherein the nut is fixedly arranged at the top of the shell, the screw rod penetrates through the nut and vertically penetrates through the top of the shell, the stirring rod is vertically and fixedly arranged at the lower end of the screw rod, a plurality of stirring needles are arranged on the stirring rod at intervals and are triangular or quadrangular, the stirring needles are arranged around the stirring rod at intervals, each stirring blade comprises a first stirring part and a second stirring part, each first stirring part comprises a pair of first arc-shaped ribs with one ends fixedly arranged on the stirring rod and a connecting rib connected with the other ends of the first arc-shaped ribs, each second stirring part comprises a pair of second arc-shaped ribs which are oppositely arranged, one ends of the pair of second arc-shaped ribs are fixedly arranged on the stirring rod, the other ends of the pair of second arc-shaped ribs are connected with the connecting rib through vertical ribs, and the second stirring parts are oppositely arranged, a plurality of stirring rings are arranged on the pair of first arc-shaped ribs and the pair of second arc-shaped ribs, and the stirring rings are formed by spirally winding strip-shaped sheets;
the driving mechanism comprises a positioning cover arranged at the top of the shell, a spring with one end fixedly arranged on the top wall in the positioning cover and a motor fixedly connected with the other end of the spring, and an output shaft of the motor is vertically downward and connected with the top of the screw rod;
when the mixing device is used, raw materials are added into the shell through the feed inlet, the sealing plug is covered, vacuumizing treatment is carried out in the shell through the vacuumizing pump, after the vacuumizing treatment is finished, the motor is opened to enable the screw rod to move up and down and rotate, the stirring rod and the stirring blade are driven to move up and down and rotate simultaneously, the raw materials in the shell are mixed, after the mixing is finished, the valve at the discharge outlet is opened, and the mixed materials flow out of the discharge outlet after being filtered by the filter screen.
2. The method of claim 1, wherein the ultra-high molecular weight binder has a molecular weight of 150 to 600 ten thousand.
3. The method for preparing a high-performance activated carbon purification filter element as claimed in claim 1, wherein the mesh aperture of the filter screen in the mixing device in the first step is not more than 1 mm.
4. The method of claim 1, wherein the mixing device of step one is provided with a conical lower end of the stirring rod.
5. The method according to claim 1, wherein the mixing device in step one is provided with an access window on the side wall of the housing, the access window is provided with an opening/closing door, the housing is provided with a pair of positioning rails, the positioning rails are respectively located on the two opposite side walls of the housing, the positioning rails are parallel to each other, one end of each positioning rail is fixedly connected to the top of the housing, the other end of each positioning rail is in contact with the opening/closing door, the positioning rails are provided with rubber layers, and the blocking net is a rectangular net which is slidably inserted into the positioning rails.
6. The method of claim 1, wherein the housing of the mixing device of step one provides a pair of supports, the supports including a fixed block fixedly connected to an outer wall of the housing and a support rod vertically disposed below the fixed block.
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| CN116040731B (en) * | 2023-01-31 | 2023-11-10 | 广东名桂环保有限公司 | Composite water treatment agent and preparation method thereof |
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