CN107793158A - A kind of preparation technology of carborundum Multichannel ceramic membrane - Google Patents
A kind of preparation technology of carborundum Multichannel ceramic membrane Download PDFInfo
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- CN107793158A CN107793158A CN201711172176.5A CN201711172176A CN107793158A CN 107793158 A CN107793158 A CN 107793158A CN 201711172176 A CN201711172176 A CN 201711172176A CN 107793158 A CN107793158 A CN 107793158A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/24—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by reciprocating plunger
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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Abstract
A kind of preparation technology of carborundum Multichannel ceramic membrane, belongs to Multichannel ceramic membrane technical field.Carborundum Multichannel ceramic membrane supporter prepared by the present invention is using silicon carbide micro-powder as aggregate, and graphite, Ludox, shaping assistant are primary raw material, are mixed according to a certain percentage, is formed using the shaping of extruder plasticity expressing technique, reducing atmosphere high temperature sintering.Carborundum multichannel supporter prepared by the present invention has the advantages that even aperture distribution, the porosity are high, flux is big, strong alkali-acid resistance corrosion.
Description
Technical field
The invention belongs to Multichannel ceramic membrane technical field, and in particular to a kind of preparation work of carborundum Multichannel ceramic membrane
Skill.
Background technology
Ceramic membrane (ceramic membrane) is also known as inorganic ceramic membrane, is to be prepared with inorganic ceramic material through special process
And the anisotropic membrane formed.Ceramic membrane tube wall gathers micropore, and under pressure, material liquid flows in membrane tube or on the outside of film,
Small-molecule substance（Or liquid）Through film, macromolecular substances（Or solid）Be rejected by, so as to reach separation, concentration, purifying and
The purpose of environmentally friendly.Ceramic membrane has the advantages such as separative efficiency height, effect stability, has been successfully applied to food, beverage, plant（Medicine）
The various fields such as object depth processing, biological medicine, fermentation, fine chemistry industry, available for the separation in technical process, clarification, purifying, dense
Contracting, degerming, desalination etc..But the pore-size distribution of the ceramic membrane, porosity, logical produced in prior art and industry manufacture
Amount and strong alkali-acid resistance corrosion etc. performance still have some deficits.
Applicant passes through long-term experiment, has invented a kind of preparation technology of carborundum Multichannel ceramic membrane, obtained ceramics
Film has the advantages that even aperture distribution, the porosity are high, flux is big, strong alkali-acid resistance corrosion.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of preparation technology of carborundum Multichannel ceramic membrane, obtained
Ceramic membrane has the advantages that even aperture distribution, the porosity are high, flux is big, strong alkali-acid resistance corrosion.The present invention solve second
Individual technical problem is the extruder being related to by transforming the technique, can single simultaneously export large volume material, and output quantity energy
Enough intelligent controls, input fill material lean on vacuum suction, make full use of backward stroke of the piston to carry out material filling to extrusion barrel, significantly
Improving production efficiency is spent, improves the yield rate of ceramic membrane.
In order to solve the above technical problems, the technical scheme is that：A kind of described carborundum multichannel ceramics of invention
The preparation technology of film, it is characterised in that comprise the following steps：
（1）Prepare the raw material of shaping carborundum multichannel supporter；
（2）Pug is made in the raw material of carborundum multichannel supporter, is comprised the following steps：
<1>Solid powder is added in three-dimensional material mixer, is well mixed；
<2>It is stand-by that liquid charging stock is mixed into emulsion；
<3>The emulsion mixed is even added in kneader, mediated with solid powder, until turning into high-ductility pug；
<4>The pug mixed is put into closed container, preserves into the confined space of constant temperature and humidity old 24-48h, fill
Divide homogenizing, ensure that pug is uniform；
（3）The pug extrusion molding that will be mixed, is made base substrate, and processing step is as follows：
Carborundum Multichannel ceramic membrane supporter uses extruding-out process, and the extruded velocity of extruder is 1-2m/min, extrusion
Temperature control is at 10-35 DEG C, and extrusion ambient humidity control is in 40-70%；During extrusion molding, there are a large amount of stomatas using surface
Wedge-shaped aluminium support；Between 30-60 DEG C, aluminium is sealed around for wedge-shaped aluminium and plane included angle, empty with compression by pipeline
Gas phase connects, and compressed air is uniformly discharged from stomata, makes to form air layer between base substrate and aluminium, reduces base substrate traveling process
In caused frictional resistance, ensure the straight degree and surface smoothness of product；
（4）Base substrate is dried；
The drying operation order includes spontaneously drying and microwave drying；
The natural drying includes following operating procedure：The base substrate of extrusion is placed on to the sizing support of surface laying fiber cloth first
On frame, then sizing bracket is placed on transhipment lorry and is transported to drying in room for constant temperature and humidity and is dried；Dry room
Temperature control is between 10-35 DEG C, and humid control is between 40-85%；When moisture loss reaches more than 50%, done into microwave
Drying process is dried；
The drying time of the microwave drying process is 10-50min；
（5）Dried base substrate is cut into specified size, is then placed into high temperature kiln and fires, firing temperature is in 1300-
Between 1500 DEG C, soaking time 3-10h.
Preferably, in above-mentioned steps（1）In, the composition raw material of multichannel supporter raw material includes solid powder and liquid is former
Material, wherein：
Solid powder is calculated with parts by weight, including following component：
Silicon carbide micro-powder 80-95 parts；
Graphite 1-3 parts；
Ludox 1-3 parts；
Pore creating material 2-10 parts；
Shaping assistant 1-4 parts；
Liquid charging stock is calculated with parts by weight, including following component：
Distilled water 20-45 parts；
Lubricant 1-8 parts；
The percentage by weight that the addition of described liquid charging stock accounts for solid powder is 10-20%.
Preferably, the solid content of described Ludox is 25 ~ 32%.
Preferably, the median of described silicon carbide micro-powder is 10-30 μm.
Preferably, pore creating material includes starch, graphite powder, charcoal powder or active powdered carbon.
Preferably, graphite be phosphorus content 85-99.9%, the natural flake graphite of granularity 32-800 mesh and/or graphite powder and/
Or aquadag.
Preferably, shaping assistant includes polyethylene glycol oxide, carboxymethyl cellulose, hydroxypropyl level methylcellulose, polyvinyl alcohol
Or polyacrylamide.
Preferably, lubricant includes glycerine, silicone oil, soya-bean oil, arabia gum or oleic acid.
Preferably, the extruder includes the extrusion barrel of more than three, and the extrusion barrel includes feed end and discharging
End, the feed end set import, and the discharge end sets outlet；Extrusion device, the extrusion dress are set in barrel is extruded
Put including piston, extrusion bar and extrusion bar drive mechanism, the extrusion bar drive mechanism connection extrusion bar, the extrusion bar is from entering
In mouth insertion extrusion barrel, piston, extrusion bar connection piston are set in barrel is extruded；The extrusion bar drive mechanism can drive
Dynamic extrusion bar stretches and promotes piston to release material from outlet；Also include extruder head, the extruder head can connect two or
More than two outlets, the material in connected extrusion barrel is made to be extruded in the lump from extruder head；
The entrance sets sealing ring flat-plate, and jack is opened up on the sealing ring flat-plate, and the extrusion bar is entered by jack to be extruded
Piston is connected in barrel；Air pressure adjustment hole is opened up on sealing ring flat-plate；Piston to export direction move when, extraneous gas can lead to
Cross air pressure adjustment hole and enter extrusion barrel；Piston to import direction move when, extrude barrel in gas can be adjusted by air pressure
Knothole is discharged to the external world.
Preferably, the extruder also includes water cooling plant, and the water cooling plant includes the water-cooling jacket of more than three, institute
The periphery that water-cooling jacket is sleeved on extrusion barrel is stated, Water-cooling circulating pipeline is set in water-cooling jacket, the water cooling in each water-cooling jacket
Circulation line is arranged in parallel, and the water inlet connection water inlet manifold of each Water-cooling circulating pipeline, the delivery port of each Water-cooling circulating pipeline connects
Pick out supply mains；Water inlet sub-valve is set in the water inlet of each Water-cooling circulating pipeline, water inlet main valve is set on water inlet manifold
Door；
The extruder also includes negative-pressure ward material tucker；In the discharge end of extrusion barrel, suction charging hole is set, it is described
Negative-pressure ward material tucker is arranged on suction charging hole；
The negative-pressure ward material tucker includes automatic switch valve, passage and feed bin；One end of the passage passes through
Aspirate the inner space of charging hole UNICOM extrusion barrel, the other end UNICOM feed bin of passage；The automatic switch valve installation
On passage, passage can be opened or closed to automatic switch valve；When piston moves to export direction, automatic switch
Valve closes passage；When piston moves to import direction, automatic switch valve opens passage, and the material in feed bin is negative
It is sucked under pressure effect in extrusion barrel；
The automatic switch valve includes valve body, valve switch drive device and slide guide device；The slide-and-guide
Device includes slide rail and sliding block, and the slide rail is arranged on extrusion barrel, and sliding block is arranged on valve body, and the sliding block is set
It can move in slide rail and along slide rail, passage can be closed when valve body moves to upper limit, when valve body moves to down
Passage can be opened when spacing；The valve switch drive device includes hauling machine and pull rope, the upper end of the pull rope
Hauling machine, the lower end connecting valve body of pull rope are connected, the hauling machine can drive valve body by folding and unfolding pull rope
Movement；
The slide guide device also includes valve bascule, and the valve bascule includes balancing pole and left and right extension spring,
Left and right extension spring hole is opened up on valve body, left and right guide rod is set respectively in left and right extension spring hole；In the left and right extension spring
It is separately positioned in left and right extension spring hole and is sleeved in left and right guide rod；The bottom of left and right extension spring is connected left and right extension spring hole
Bottom；The left and right both ends of balancing pole are inserted in left and right extension spring hole and are connected with the upper end of left and right extension spring respectively；Balancing pole
Left and right both ends set pilot hole and are set in by pilot hole on left and right guide rod；Set at the middle part of valve body,
Lower clamping arc block, the middle part of the balancing pole set annular groove, the annular groove of balancing pole be arranged on upper and lower clamping arc block it
Between；The pull rope includes left and right rope body, and the hauling machine includes left and right hauling machine；The upper end of left and right rope body connects respectively
Left and right hauling machine, the lower end of left and right rope body connect the left and right both ends of balancing pole and can drive valve by traction balance bar respectively
Door body moves up and down
Compared with prior art, the beneficial effects of the invention are as follows：
1st, Multichannel ceramic membrane supporter prepared by the present invention is using carborundum as primary raw material, using plasticity extruding-out process
Technology, it is dried by way of microwave drying is combined spontaneously drying, is carried out under reducing atmosphere using high temperature kiln
Burn till obtained.
The present invention is mixed Ludox, graphite, pore creating material, shaping assistant, and preparation process is simple, and the product of preparation is pure
Degree height, even aperture distribution, flux is big, acid-alkali-corrosive-resisting is strong.Compared with the aluminum oxide Multichannel ceramic membrane of in the market circulation,
Water flux can improve more than 20%, and acid-alkali-corrosive-resisting reaches more than 99.8%.
2nd, the present invention is combined using Ludox, graphite with silicon carbide micro-powder, is reduced firing temperature, is improved the resistance to of product
Acid-base property corrodes, and improves the filtration flux of product.
3rd, prior art has glass mutually to generate mainly using the raw material of clay class as sintering aid, and firing temperature is low, but
Corrosion-resistant, it can not be used for a long time under the conditions of strong acid and strong base, service life is short.Carbofrax material has acid and alkali-resistance in itself
Property the characteristics of, liquid phase will not be produced in preparation process, even aperture distribution, filtration flux is high, therefore the present invention is using carbonization
Silicon realizes that the mode combined improves product into while carborundum with graphite sintering as aggregate, Ludox with carborundum aggregate
Performance.
4th, the present invention is in ceramic film support preparation process, the introducing of organic binder bond substantially increase extrusion efficiency,
The deformation in base substrate elementary process is reduced, problem of Cracking is burnt till caused by reduction uneven drying, improves the qualification rate of product.
5th, of the invention compared with existing aluminium oxide ceramics film support, water flux improves more than 20%, and water flux reaches 6m3/
More than h, resistance to acids and bases reach more than 99.8%, and overall performance is all lifted well.
6th, extruder of the present invention can single export big scale of construction material simultaneously, and varying number is connected by extruder head
Extrusion cartridge outlet, realize the intelligent control of output quantity；In addition, input fill material leans on vacuum suction into extrusion barrel,
Backward stroke of the piston is made full use of to carry out material filling to extrusion barrel, significantly improving production efficiency.
7th, the movement of valve body can be driven by folding and unfolding pull rope by hauling machine, but in actual use process
In, always there is difference in the tractive force of left and right, difference occurs in the length of left and right pull rope, cause the left and right sides of valve body to occur
Unbalanced state, make valve body can not effectively close passage, cause equipment fault.Therefore, applicant devises valve
Bascule, left and right pull rope is made to be in tensioner state all the time by the traction of left and right extension spring, when there is difference in tractive force,
Balancing pole tilts, but valve body remains left-right balance state, makes it be moved along slide rail is smooth, and can be completely close
Seal passage.
Brief description of the drawings
Fig. 1 is the structural representation of extruder embodiment one of the present invention；
Fig. 2 is the structural representation of extruder embodiment two of the present invention；
Fig. 3 is the structural representation of the automatic switch valve of the extruder；
In figure：1st, bar drive mechanism is extruded；2nd, bar is extruded；3rd, import；4th, air pressure adjustment hole；5th, piston；6th, water inlet manifold；7th, water
Cold overcoat；8th, barrel is extruded；9th, export；10th, extruder head；11st, outfall sewer；12nd, automatic switch valve；13rd, charging hole is aspirated；
14th, pull rope；15th, slide rail；16th, Zola's spring hole；17th, left guide rod；18th, Zola's spring；19th, balancing pole；20th, lower clamping arc block；21、
Annular groove；22nd, upper clamping arc block；23rd, right extension spring hole；24th, right guide rod；25th, right extension spring.
Embodiment
A kind of preparation technology of the described carborundum Multichannel ceramic membrane of invention, comprises the following steps：
（1）Prepare the raw material of shaping carborundum multichannel supporter；
（2）Pug is made in the raw material of carborundum multichannel supporter, is comprised the following steps：
<1>Solid powder is added in three-dimensional material mixer, is well mixed；
<2>It is stand-by that liquid charging stock is mixed into emulsion；
<3>The emulsion mixed is even added in kneader, mediated with solid powder, until turning into high-ductility pug；
<4>The pug mixed is put into closed container, preserves into the confined space of constant temperature and humidity old 24-48h, fill
Divide homogenizing, ensure that pug is uniform；
（3）The pug extrusion molding that will be mixed, is made base substrate, and processing step is as follows：
Carborundum Multichannel ceramic membrane supporter uses extruding-out process, and the extruded velocity of extruder is 1-2m/min, extrusion
Temperature control is at 10-35 DEG C, and extrusion ambient humidity control is in 40-70%；During extrusion molding, there are a large amount of stomatas using surface
Wedge-shaped aluminium support；Between 30-60 DEG C, aluminium is sealed around for wedge-shaped aluminium and plane included angle, empty with compression by pipeline
Gas phase connects, and compressed air is uniformly discharged from stomata, makes to form air layer between base substrate and aluminium, reduces base substrate traveling process
In caused frictional resistance, ensure the straight degree and surface smoothness of product；
（4）Base substrate is dried；
The drying operation order includes spontaneously drying and microwave drying；
The natural drying includes following operating procedure：The base substrate of extrusion is placed on to the sizing support of surface laying fiber cloth first
On frame, then sizing bracket is placed on transhipment lorry and is transported to drying in room for constant temperature and humidity and is dried；Dry room
Temperature control is between 10-35 DEG C, and humid control is between 40-85%；When moisture loss reaches more than 50%, done into microwave
Drying process is dried；
The drying time of the microwave drying process is 10-50min；
（5）Dried base substrate is cut into specified size, is then placed into high temperature kiln and fires, firing temperature is in 1300-
Between 1500 DEG C, soaking time 3-10h.
In above-mentioned steps（1）In, the composition raw material of multichannel supporter raw material includes solid powder and liquid charging stock, its
In：
Solid powder is calculated with parts by weight, including following component：
Silicon carbide micro-powder 80-95 parts；
Graphite 1-3 parts；
Ludox 1-3 parts；
Pore creating material 2-10 parts；
Shaping assistant 1-4 parts；
Liquid charging stock is calculated with parts by weight, including following component：
Distilled water 20-45 parts；
Lubricant 1-8 parts；
The percentage by weight that the addition of described liquid charging stock accounts for solid powder is 10-20%.
The solid content of described Ludox is 25 ~ 32%.
The median of described silicon carbide micro-powder is 10-30 μm.
Pore creating material includes starch, graphite powder, charcoal powder or active powdered carbon.
Graphite is phosphorus content 85-99.9%, the natural flake graphite and/or graphite powder and/or graphite of granularity 32-800 mesh
Breast.
Shaping assistant includes polyethylene glycol oxide, carboxymethyl cellulose, hydroxypropyl level methylcellulose, polyvinyl alcohol or polypropylene
Acid amides.
Lubricant includes glycerine, silicone oil, soya-bean oil, arabia gum or oleic acid.
The present invention is described in further detail with reference to embodiment.
The material composition and proportioning of specific embodiment are referring to following table：
Table one：The specific embodiment list of ingredients of solid powder：
| Composition | Embodiment one | Embodiment two | Embodiment three |
| Silicon carbide micro-powder | 80 parts | 88 parts | 95 parts |
| Graphite | 1 part | 2.5 part | 3 parts |
| Ludox | 1 part | 2 parts | 3 parts |
| Pore creating material | 2 parts | 5 parts | 10 parts |
| Shaping assistant | 1 part | 3 parts | 4 parts |
Table two：The specific embodiment list of ingredients of liquid charging stock：
| Composition | Embodiment one | Embodiment two | Embodiment three |
| Distilled water | 20 parts | 35 parts | 45 parts |
| Lubricant | 1 part | 5 parts | 8 parts |
Embodiment one
As shown in figure 1, in embodiment one, multi-cavity of the present invention intelligently amount control type extruder, including three extrusion barrels,
The extrusion barrel includes feed end and discharge end, and the feed end sets import, and the discharge end sets outlet；In extruded stock
Extrusion device is set in cylinder, and the extrusion device includes piston, extrusion bar and extrusion bar drive mechanism, the extrusion bar driving machine
Structure connection extrusion bar, the extrusion bar are inserted in extrusion barrel from import, and piston is set in barrel is extruded, and extrusion bar connection is lived
Plug；The extrusion bar drive mechanism can drive extrusion bar to stretch and promote piston to release material from outlet；Also include extrusion
Head, the extruder head can connect two or more outlets, make the material in connected extrusion barrel can be from squeezing
Lift one's head and extrude in the lump.
The entrance sets sealing ring flat-plate, and jack is opened up on the sealing ring flat-plate, and the extrusion bar is entered by jack
Piston is connected in extrusion barrel；Air pressure adjustment hole is opened up on sealing ring flat-plate；Piston to export direction move when, extraneous gas energy
Extrusion barrel is enough entered by air pressure adjustment hole；Piston to import direction move when, extrude barrel in gas can pass through gas
Pressure adjustment hole is discharged to the external world.
Also include water cooling plant, the water cooling plant includes the water-cooling jacket of more than three, and the water-cooling jacket is sleeved on
The periphery of barrel to be extruded, Water-cooling circulating pipeline is set in water-cooling jacket, the Water-cooling circulating pipeline in each water-cooling jacket is arranged in parallel,
The water inlet connection water inlet manifold of each Water-cooling circulating pipeline, the delivery port connection outfall sewer of each Water-cooling circulating pipeline；In each water
The water inlet of SAPMAC method pipeline sets water inlet sub-valve, and water inlet total valve is set on water inlet manifold.
The present invention can single export big scale of construction material simultaneously, and the extrusion barrel for connecting by extruder head varying number goes out
Mouth, realize the intelligent control of output quantity.
Embodiment two
As shown in Fig. 2 also include negative-pressure ward material tucker in the present embodiment；In the discharge end of extrusion barrel, suction is set
Charging hole, the negative-pressure ward material tucker are arranged on suction charging hole.
The negative-pressure ward material tucker includes automatic switch valve, passage and feed bin；One end of the passage
The inner space of barrel, the other end UNICOM feed bin of passage are extruded by aspirating charging hole UNICOM；The automatic switch valve
On passage, passage can be opened or closed to automatic switch valve；When piston moves to export direction, automatically
Controlled valve closes passage；When piston moves to import direction, automatic switch valve opens passage, the material in feed bin
It is sucked under suction function in extrusion barrel.
As shown in figure 3, the automatic switch valve includes valve body, valve switch drive device and slide-and-guide dress
Put；The slide guide device includes slide rail and sliding block, and the slide rail is arranged on extrusion barrel, and sliding block is arranged on valve body
On, the sliding block is arranged in slide rail and can moved along slide rail, and passage can be closed when valve body moves to upper limit, when
Valve body can open passage when moving to lower limit；The valve switch drive device includes hauling machine and pull rope, institute
The upper end connection hauling machine of pull rope, the lower end connecting valve body of pull rope are stated, the hauling machine passes through folding and unfolding pull rope energy
Enough drive the movement of valve body.
The slide guide device also includes valve bascule, and the valve bascule includes balancing pole and left and right
Extension spring, left and right extension spring hole is opened up on valve body, left and right guide rod is set respectively in left and right extension spring hole；The left and right drawing
It is separately positioned in left and right extension spring hole and is sleeved in left and right guide rod in spring；The bottom of left and right extension spring is connected left and right drawing
The bottom in spring hole；The left and right both ends of balancing pole are inserted in left and right extension spring hole and are connected with the upper end of left and right extension spring respectively；Balance
The left and right both ends of bar set pilot hole and are set in by pilot hole on left and right guide rod；Set at the middle part of valve body
Upper and lower clamping arc block, the middle part of the balancing pole set annular groove, and the annular groove of balancing pole is arranged on upper and lower clamping arc
Between block；The pull rope includes left and right rope body, and the hauling machine includes left and right hauling machine；The upper end difference of left and right rope body
Left and right hauling machine is connected, the left and right lower end for restricting body connects the left and right both ends of balancing pole and can be by traction balance bar band respectively
Movable valve body moves up and down.
The present invention can drive the movement of valve body by hauling machine by folding and unfolding pull rope, but actually use
Always there is difference in Cheng Zhong, the tractive force of left and right, difference occurs in the length of left and right pull rope, causes to go out at left and right sides of valve body
Existing unbalanced state, makes valve body can not effectively close passage, causes equipment fault.Therefore, applicant devises valve
Door bascule, makes left and right pull rope be in tensioner state all the time, difference occurs in tractive force by the traction of left and right extension spring
When, balancing pole tilts, but valve body remains left-right balance state, makes it be moved along slide rail is smooth, and can be complete
Hermetically sealed firmly passage.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
It is the present invention that what those skilled in the art, which is combined, changes or retrofited possibly also with the technology contents of the disclosure above,
Equivalent embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is implemented to more than
Any simple modification, equivalent variations and the remodeling that example is made, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of preparation technology of carborundum Multichannel ceramic membrane, it is characterised in that comprise the following steps：
（1）Prepare the raw material of shaping carborundum multichannel supporter；
（2）Pug is made in the raw material of carborundum multichannel supporter, is comprised the following steps：
<1>Solid powder is added in three-dimensional material mixer, is well mixed；
<2>It is stand-by that liquid charging stock is mixed into emulsion；
<3>The emulsion mixed is even added in kneader, mediated with solid powder, until turning into high-ductility pug；
<4>The pug mixed is put into closed container, preserves into the confined space of constant temperature and humidity old 24-48h, fill
Divide homogenizing, ensure that pug is uniform；
（3）The pug extrusion molding that will be mixed, is made base substrate, and processing step is as follows：
Carborundum Multichannel ceramic membrane supporter uses extruding-out process, and the extruded velocity of extruder is 1-2m/min, extrusion
Temperature control is at 10-35 DEG C, and extrusion ambient humidity control is in 40-70%；During extrusion molding, there are a large amount of stomatas using surface
Wedge-shaped aluminium support；Between 30-60 DEG C, aluminium is sealed around for wedge-shaped aluminium and plane included angle, empty with compression by pipeline
Gas phase connects, and compressed air is uniformly discharged from stomata, makes to form air layer between base substrate and aluminium, reduces base substrate traveling process
In caused frictional resistance, ensure the straight degree and surface smoothness of product；
（4）Base substrate is dried；
The drying operation order includes spontaneously drying and microwave drying；
The natural drying includes following operating procedure：The base substrate of extrusion is placed on to the sizing support of surface laying fiber cloth first
On frame, then sizing bracket is placed on transhipment lorry and is transported to drying in room for constant temperature and humidity and is dried；Dry room
Temperature control is between 10-35 DEG C, and humid control is between 40-85%；When moisture loss reaches more than 50%, done into microwave
Drying process is dried；
The drying time of the microwave drying process is 10-50min；
（5）Dried base substrate is cut into specified size, is then placed into high temperature kiln and fires, firing temperature is in 1300-
Between 1500 DEG C, soaking time 3-10h.
2. the preparation technology of carborundum Multichannel ceramic membrane according to claim 1, it is characterised in that：In above-mentioned steps
（1）In, the composition raw material of multichannel supporter raw material includes solid powder and liquid charging stock, wherein：
Solid powder is calculated with parts by weight, including following component：
Silicon carbide micro-powder 80-95 parts；
Graphite 1-3 parts；
Ludox 1-3 parts；
Pore creating material 2-10 parts；
Shaping assistant 1-4 parts；
Liquid charging stock is calculated with parts by weight, including following component：
Distilled water 20-45 parts；
Lubricant 1-8 parts；
The percentage by weight that the addition of described liquid charging stock accounts for solid powder is 10-20%.
3. the preparation technology of carborundum Multichannel ceramic membrane according to claim 2, it is characterised in that：Described Ludox
Solid content be 25 ~ 32%.
4. the preparation technology of carborundum Multichannel ceramic membrane according to claim 3, it is characterised in that：Described carborundum
The median of micro mist is 10-30 μm.
5. the preparation technology of carborundum Multichannel ceramic membrane according to claim 4, it is characterised in that：Pore creating material includes forming sediment
Powder, graphite powder, charcoal powder or active powdered carbon.
6. the preparation technology of carborundum Multichannel ceramic membrane according to claim 5, it is characterised in that：Graphite is phosphorus content
85-99.9%, granularity 32-800 mesh natural flake graphite and/or graphite powder and/or aquadag.
7. the preparation technology of carborundum Multichannel ceramic membrane according to claim 6, it is characterised in that：Shaping assistant includes
Polyethylene glycol oxide, carboxymethyl cellulose, hydroxypropyl level methylcellulose, polyvinyl alcohol or polyacrylamide.
8. the preparation technology of carborundum Multichannel ceramic membrane according to claim 7, it is characterised in that：Lubricant includes sweet
Oil, silicone oil, soya-bean oil, arabia gum or oleic acid.
9. the preparation technology of carborundum Multichannel ceramic membrane according to claim 8, it is characterised in that：The extruder bag
Include the extrusion barrel of more than three, the extrusion barrel includes feed end and discharge end, the feed end setting import, it is described go out
Expect that end sets outlet；Extrusion device is set in barrel is extruded, and the extrusion device includes piston, extrusion bar and extrusion bar driving
Mechanism, the extrusion bar drive mechanism connection extrusion bar, the extrusion bar is inserted in extrusion barrel from import, in barrel is extruded
Piston, extrusion bar connection piston are set；The extrusion bar drive mechanism can drive extrusion bar to stretch and promote piston by material
Released from outlet；Also include extruder head, the extruder head can connect two or more outlets, make connected extrusion
Material in barrel can be extruded in the lump from extruder head；
The entrance sets sealing ring flat-plate, and jack is opened up on the sealing ring flat-plate, and the extrusion bar is entered by jack to be extruded
Piston is connected in barrel；Air pressure adjustment hole is opened up on sealing ring flat-plate；Piston to export direction move when, extraneous gas can lead to
Cross air pressure adjustment hole and enter extrusion barrel；Piston to import direction move when, extrude barrel in gas can be adjusted by air pressure
Knothole is discharged to the external world.
10. according to the preparation technology of the carborundum Multichannel ceramic membrane described in claim 9, it is characterised in that：The extruder
Also include water cooling plant, the water cooling plant includes the water-cooling jacket of more than three, and the water-cooling jacket is sleeved on extrusion barrel
Periphery, Water-cooling circulating pipeline is set in water-cooling jacket, and the Water-cooling circulating pipeline in each water-cooling jacket is arranged in parallel, and each water cooling is followed
The water inlet connection water inlet manifold on endless tube road, the delivery port connection outfall sewer of each Water-cooling circulating pipeline；In each water-cooling circular tube
The water inlet on road sets water inlet sub-valve, and water inlet total valve is set on water inlet manifold；
The extruder also includes negative-pressure ward material tucker；In the discharge end of extrusion barrel, suction charging hole is set, it is described
Negative-pressure ward material tucker is arranged on suction charging hole；
The negative-pressure ward material tucker includes automatic switch valve, passage and feed bin；One end of the passage passes through
Aspirate the inner space of charging hole UNICOM extrusion barrel, the other end UNICOM feed bin of passage；The automatic switch valve installation
On passage, passage can be opened or closed to automatic switch valve；When piston moves to export direction, automatic switch
Valve closes passage；When piston moves to import direction, automatic switch valve opens passage, and the material in feed bin is negative
It is sucked under pressure effect in extrusion barrel；
The automatic switch valve includes valve body, valve switch drive device and slide guide device；The slide-and-guide
Device includes slide rail and sliding block, and the slide rail is arranged on extrusion barrel, and sliding block is arranged on valve body, and the sliding block is set
It can move in slide rail and along slide rail, passage can be closed when valve body moves to upper limit, when valve body moves to down
Passage can be opened when spacing；The valve switch drive device includes hauling machine and pull rope, the upper end of the pull rope
Hauling machine, the lower end connecting valve body of pull rope are connected, the hauling machine can drive valve body by folding and unfolding pull rope
Movement；
The slide guide device also includes valve bascule, and the valve bascule includes balancing pole and left and right extension spring,
Left and right extension spring hole is opened up on valve body, left and right guide rod is set respectively in left and right extension spring hole；In the left and right extension spring
It is separately positioned in left and right extension spring hole and is sleeved in left and right guide rod；The bottom of left and right extension spring is connected left and right extension spring hole
Bottom；The left and right both ends of balancing pole are inserted in left and right extension spring hole and are connected with the upper end of left and right extension spring respectively；Balancing pole
Left and right both ends set pilot hole and are set in by pilot hole on left and right guide rod；Set at the middle part of valve body,
Lower clamping arc block, the middle part of the balancing pole set annular groove, the annular groove of balancing pole be arranged on upper and lower clamping arc block it
Between；The pull rope includes left and right rope body, and the hauling machine includes left and right hauling machine；The upper end of left and right rope body connects respectively
Left and right hauling machine, the lower end of left and right rope body connect the left and right both ends of balancing pole and can drive valve by traction balance bar respectively
Door body moves up and down.
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