CN107519764A - The manufacture method of asymmetric tubular filter element base substrate and its application - Google Patents
The manufacture method of asymmetric tubular filter element base substrate and its application Download PDFInfo
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- CN107519764A CN107519764A CN201710637642.6A CN201710637642A CN107519764A CN 107519764 A CN107519764 A CN 107519764A CN 201710637642 A CN201710637642 A CN 201710637642A CN 107519764 A CN107519764 A CN 107519764A
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- supporter
- filter element
- tubular filter
- base substrate
- slurry
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
- B01D69/105—Support pretreatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/061—Manufacturing thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/062—Tubular membrane modules with membranes on a surface of a support tube
- B01D63/063—Tubular membrane modules with membranes on a surface of a support tube on the inner surface thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of manufacture method of asymmetric tubular filter element base substrate, comprise the following steps：1) supporter and slurry are obtained：The slurry includes the first raw material powder and dispersant；The aperture of the supporter is 1~3 times of the particle diameter of the first raw material powder；2) slip casting：The supporter is stood up and will blocked below the supporter, then makes the inside of the supporter full of the slurry and keeps at least 10s, the slurry in the supporter is flowed out naturally from below；3) coating is prepared：The supporter is put upside down and seals the both ends of the supporter, then the supporter is made to rotate in the horizontal direction, so that the first raw material powder in the slurry being had been injected into the supporter is attached to the inwall of the supporter under the action of the centrifugal, and the dispersant in the slurry having been injected into passes through the tube wall of the supporter under the action of the centrifugal, so as to obtain the precursor of the asymmetric tubular filter element base substrate；4) dry.
Description
Technical field
The present invention relates to asymmetric tubular filter element technical field, in particular to asymmetric tubular filter element
The manufacture method of base substrate and its application.
Background technology
Asymmetric tubular filter element refers to the asymmetric tubular filter that pore size filter changes in gradient on filtering direction
Element.The aperture of asymmetric tubular filter element is by radially increasing or reducing successively outside interior.Wherein, for the aperture according to
The endothecium structure of the asymmetric tubular filter element of secondary increase is referred to as inner membrance, and layer structure is referred to as supporter；For the aperture
The endothecium structure for the asymmetric tubular filter element being sequentially reduced is referred to as supporter, and layer structure is referred to as outer membrane；Inner membrance and outer membrane
It can be collectively referred to as film layer.
Following steps are generally included for the asymmetric tubular filter element with the film layer prepared by powder metallurgic method：
1) adhere to slurry (film powder is added in dispersant and is made) in supporting body surface and drying forms coating；2) to the branch of attachment slurry
Support body carries out double sintering, coating is converted into inner membrance or outer membrane (film layer).At present, the main preparation technology for adhering to slurry is spray
Apply or impregnate.
It is uniform due to being difficult to form thickness although spraying is it can be readily appreciated that spraying easily independently forms inner membrance or outer membrane
Coating, cause final film surface out-of-flatness, be easily filtered into sintering and crack or make the aperture of film layer uneven.
Dipping then needs to be equipped with special equipment, the outside of supporter is stained with slurry or preparation during preventing from preparing inner membrance
The inside of supporter is set to be stained with slurry during outer membrane.For example, preparing inner membrance mainly uses following methods：Certain volume slurry is prepared to fall
Enter in tubulose leaching film frock, support external surface sealing is immersed in slurry, the absorption of certain time rear supports inner surface is certain
The slurry of amount.Not only operating process is complicated for this leaching membrane process, and the slurry for having impregnated rear supports surface attachment flows downward,
A lot of current mark is formed in supporter inner surface, causes thicknesses of layers uneven, is cracked in sintering, interior membrane aperture is uneven
It is even.
The content of the invention
It is a primary object of the present invention to provide the manufacture method and manufacturing equipment of asymmetric tubular filter element base substrate, with
Solve thicknesses of layers existing for asymmetric tubular filter element of the prior art and pore-size distribution is uneven and crackle be present
The problem of.Meanwhile the manufacture method and manufacturing equipment of asymmetric tubular filter element are also provided, with excellent non-of processability
Symmetric tubular filter element.
To achieve these goals, according to an aspect of the invention, there is provided a kind of asymmetric tubular filter element base
The manufacture method of body.The asymmetric tubular filter element base substrate is including tubulose and porous supporter and positioned at the support
The coating of internal wall, the inwall that the coating is attached to the supporter by slurry form through drying, the asymmetric tubular filter
The manufacture method of element base substrate comprises the following steps：
1) supporter and slurry are obtained：The slurry includes the first raw material powder and dispersant；The aperture of the supporter is
1~3 times of the particle diameter of the first raw material powder；
2) slip casting：The supporter is stood up and will blocked below the supporter, then makes the interior of the supporter
Portion is full of the slurry and keeps at least 10s, the slurry in the supporter is flowed out naturally from below；
3) coating is prepared：The supporter is put upside down and seals the both ends of the supporter, then makes the branch
Support body rotates in the horizontal direction, so that the first raw material powder in the slurry being had been injected into the supporter is attached under the action of the centrifugal
In the inwall of the supporter, and the dispersant in the slurry having been injected into passes through the pipe of the supporter under the action of the centrifugal
Wall, so as to obtain the precursor of the asymmetric tubular filter element base substrate；
4) dry：The precursor is dried, that is, obtains the asymmetric tubular filter element base substrate.
" the standing up " is the central axis for instigating the supporter in horizontal plane；" the putting upside down " is to instigate the branch
The central shaft and plane-parallel of support body；" supporter is rotated in the horizontal direction " is turn for instigating supporter to rotate
Moving axis is parallel with the central shaft；The manufacture method of the asymmetric tubular filter element base substrate of the present invention is expected centrifugation is former first
The attachment of slurry ought to be used for, can be produced the advantage that：
1) under the action of the centrifugal force, the first raw material powder moves further towards supporter so that the first raw material powder and support
Body is in close contact, and it is difficult for drop-off can to lift the adhesion between film layer and supporter, film layer after sintering；Meanwhile traditional system
Need after drying to suppress the asymmetric tubular filter element base substrate in Preparation Method to lift the first raw material powder
Consistency, and the first raw material powder in the asymmetric tubular filter element base substrate that the manufacture method of the application is prepared is
Accumulate comparatively dense, because compacting filtering can be cancelled or the time of compacting or the size of press power can be reduced；
2) for the first raw material powder in slurry due to of different sizes, the centrifugal force being subject to is also different, the first larger original of particle diameter
The centrifugal force that feed powder is subject to is big and first reaches supporting body surface, and the centrifugal force that the less first raw material powder of particle diameter is subject to is small then to be arrived
Up to supporting body surface, so that coating has the bisque structure of stratiform, and each layer has basically identical first of granular size
Raw material powder, the aperture for the film layer for sintering to obtain by such coating is more uniform, and surface is smooth, smooth；
3) dispersant by centrifugal action and through supporter tube wall so that be thrown out of, during so as to reduce dry
Between, shorten sintering time, reduce the first raw material powder in stress concentration caused by sintering, avoid film layer from cracking and pin
Hole；
4) non-secure adhesion also has certain mobility, the water of supporter under the action of the centrifugal in the slurry on supporter
Square to rotate cause these slurries redistribution uniformly and it is higher with supporter strong bonded, the quality of gained film layer；
5) due to the distribution of pores of supporter be it is cranky, therefore, the first raw material powder in slurry be difficult to through
The tube wall of supporter is so that be thrown out of；But if the particle diameter of the first raw material powder is larger, then the first raw material powder is just difficult to portion
Divide the hole into supporter, this can make it that the adhesion of film layer and supporter is poor, and film layer is easy to fall off；Therefore, in order to enter one
Step ensures that the first raw material powder is not thrown out of and makes film layer and the adhesion of supporter is stronger, and the aperture of the supporter is preferably institute
State the particle diameter of the first raw material powder 1~3 times；Preferably, the aperture of the supporter is the 1.8 of the particle diameter of the first raw material powder
~2.5 times.
Further, the pipe thickness of the supporter is 1~6mm；The internal diameter of the supporter is 20~100mm；Institute
The thickness for stating coating is 0.01~2mm.Because therefore supporter, in order to prevent supporter from deforming, can be supported by centrifugal action
Body needs have certain thickness and internal diameter, to obtain suitable rigidity.And the aperture of film layer is smaller, therefore, when the thickness of coating
Spend for 0.01~2mm when, filter pressure can be reduced on the premise of preferable filter effect is kept by sintering the film layer of gained.It is preferred that
Ground, the pipe thickness of the supporter is 2~4mm；The internal diameter of the supporter is 30~75mm；The thickness of the coating is
0.05~1mm.
Further, time of the inside full of the slurry for making the supporter is 15~35s.Thus, thickness is obtained
Suitable coating.
Further, the rotating speed that the supporter rotates is 100~500r/min, and the time of rotation is 2~20min.If
Rotating speed is too slow, then efficiency is too low；If rotating speed is too high, it is not only possible to causes dispersant to be quickly thrown out of and causes the first raw material powder
Not as good as being evenly distributed, can also there is higher requirement to the rigidity of supporter.Preferably, the rotating speed of the supporter rotation is
200~300r/min, the time of rotation is 5~15min.
Further, the preparation of the supporter comprises the following steps：1) the second raw material powder is prepared, then by second original
Feed powder is pressed into supporter presoma, and the supporter presoma has the shape of the supporter；2) by before the supporter
Body sintering is driven, that is, obtains the supporter.I.e. supporter and film layer are by sintering diamond bit or the ceramic porous material of sintering
Material is formed, and supporter is born the high temperature in coating sintering process, and can be in the sintering process of coating
In with film layer form metallurgical binding, adhesion is stronger；And the presoma of the supporter be by the second raw material powder direct pressing and
Into supporter easily has preferable rigidity, and the thickness of supporter can be reduced on the premise of bearing compared with high centrifugal force.
Further, the equipment that this method uses includes leaching membrane module, sealing and the driving supporter in level
The drive component that direction rotates；Bottom when the leaching membrane module includes feed arrangement, stood up with the supporter coordinates stifled
Head, the discharging tube through the plug and the valve on the discharging tube；The sealing include respectively with the branch
The first sealing and the second sealing of support body both ends matching；The drive component includes close with first sealing and second
The rotating shaft of envelope portion connection and the motor of the driving axis of rotation.Thus, the device structure is simple, and collection slip casting and centrifugation are one
Body, production efficiency can be obviously improved.
To achieve these goals, according to another aspect of the present invention, additionally provide one kind and prepare asymmetric tubulose mistake
The method of filtering element.The method for preparing asymmetric tubular filter element comprises the following steps：
1) asymmetric tubular filter element base is prepared using the manufacture method of above-mentioned asymmetric tubular filter element base substrate
Body；
2) by the asymmetric tubular filter element blank sintering, the painting in the asymmetric tubular filter element base substrate is made
Layer is converted into the film layer with filtering function, that is, obtains the asymmetric tubular filter element.
Using the asymmetric tubular filter element prepared by the manufacture method as above-mentioned asymmetric tubular filter element base substrate
Base substrate sinters the thickness and even aperture distribution of the film layer in the asymmetric tubular filter element of acquisition, will not crack and
Pin hole.The film layer is inner membrance.
Further, the supporter and the film layer are by sintering diamond bit or sintering of the same race with compatibility
Ceramic porous material is formed.Thus, it is possible to ensure because material is different not depart between supporter and film layer.
Further, the particle diameter of the first raw material powder is 1~12 μm；The second raw material powder is particle diameter for -200~+
400 mesh.Thus, the aperture and the particle diameter of the first raw material powder for easily making supporter match, and obtain the suitable asymmetric pipe in aperture
Shape filter element.
To achieve these goals, according to another aspect of the present invention, asymmetric tubular filter element base is additionally provided
The manufacturing equipment of body, the asymmetric tubular filter element base substrate is including tubulose and porous supporter and positioned at the support
The coating of internal wall, the inwall that the coating is attached to the supporter by slurry form through drying, and the manufacturing equipment includes
The drive component that leaching membrane module, sealing and the driving supporter rotate in the horizontal direction；It is described leaching membrane module include into
Plug, the discharging tube through the plug and located at the row that material device, bottom when being stood up with the supporter coordinate
Valve in liquid pipe；The sealing includes the first sealing and the second sealing matched respectively with the supporter both ends；
The drive component includes the rotating shaft being connected with first sealing and the second sealing and drives the axis of rotation
Motor.
In use, making to be full of slurry in supporter first using feed arrangement, make part size under pressure itself effect
The inner surface of supporter is attached to, then starting motor makes axis of rotation, you can rotate supporter, so that slurry distribution is equal
The adhesion of the first raw material powder of uniform increase and supporter.It can be seen that the manufacture of asymmetric tubular filter element base substrate of the invention
The structure of equipment is simple, can not only prepare coating in uniform thickness, and can be obviously improved production efficiency.
Further, the leaching membrane module also includes the holding vessel for holding the slurry, the holding vessel and the discharge opeing
Pipe turns on；The feed arrangement includes feed tube tank connected with the storage and the pump on the feed tube.Thus,
The slurry discharged by discharging tube can be directly used again.
Further, in addition to the second of the first controller of the valve closure and the operation for controlling the pump is controlled to control
Device processed.Thus, the thickness of coating is intelligently controlled.
Further, agitator is provided with the holding vessel.Thus, the composition of slurry in holding vessel is made uniformly to divide all the time
Cloth.
Further, in addition to slip casting mechanism, the slip casting mechanism include close located at first sealing and/or second
The slurry stream passage for making the inside and outside conducting of the supporter in envelope portion.Thus, when by soaking accompanying by membrane module
During slurry amount deficiency, slurry can be increased by slip casting mechanism.
The relative position relation of slip casting mechanism and drive component can be following three kinds：
The first, rotating shaft and slurry stream passage are misaligned, that is, need to open on the first sealing and/or the second sealing
If two holes, now, the slip casting mechanism should also include the first plug matched with the slurry stream passage, due to rotating shaft
Slip casting is not involved in, therefore rotating shaft can be solid construction.Thus, prevent that slurry is thrown out of from slurry stream passage during centrifugation.
Second, the rotating shaft includes the hollow tubular portion for the pulp flow through the slurry stream passage,
The slip casting mechanism also includes being located at being turned on supporter inside in the hollow tubular portion inside the supporter
Slurry outlet and the injected hole in the hollow tubular portion outside the supporter.Thus, before rotation, oar body
It is more evenly distributed in the bottom of supporter, is advantageous to obtain the coating of thickness evenly.
The third, the rotating shaft includes the hollow tubular portion for pulp flow through the slurry stream passage, described
Slip casting mechanism also includes the slurry outlet with conducting inside the supporter in the hollow tubular portion inside the supporter
And the injected hole in the hollow tubular portion outside the supporter.Thus, a hole is only opened up on sealing, even if
Rotating shaft and slurry stream passage overlap so that structure is more compact, and sealing effectiveness is more preferable.
Further, in addition to the injected hole the second plug matched.Thus, slurry is from injected hole when preventing centrifugation
It is thrown out of.
Further, the material of first sealing and/or the second sealing is elastomeric material；The material of the plug
For elastomeric material.Thus, easy acquisition and good sealing effect.
Further, in addition to the rotating shaft detent mechanism positioned.Thus, make in the rotation process of supporter
It is more stable.
Further, in addition to casing, the casing are provided with the turn hole matched with the rotating shaft.Thus, preventing point
Powder reclaims dispersant while splashing.
Further, the pipe thickness of the supporter is 1~6mm；The internal diameter of the supporter is 20~100mm；Institute
The thickness for stating coating is 0.01~2mm.Because therefore supporter, in order to prevent supporter from deforming, can be supported by centrifugal action
Body needs have certain thickness and internal diameter.And the aperture of film layer is smaller, therefore, when coating layer thickness is 0.01~2mm, by the painting
The film layer of layer sintering gained can reduce filter pressure on the premise of preferable filter effect is kept.Preferably, the supporter
Pipe thickness be 2~4mm；The internal diameter of the supporter is 30~75mm；The thickness of the coating is 0.05~1mm.
To achieve these goals, according to another aspect of the present invention, additionally provide and prepare asymmetric tubular filter member
The equipment of part, the asymmetric tubular filter element are formed by asymmetric tubular filter element blank sintering, the manufacturing equipment
Equipment, the equipment for drying the asymmetric tubular filter element base substrate including manufacturing the asymmetric tubular filter element base substrate
Equipment with the asymmetric tubular filter element base substrate is sintered, wherein, the manufacture asymmetric tubular filter element base
The equipment of body is the manufacturing equipment of above-mentioned asymmetric tubular filter element base substrate.
The structure of the equipment for preparing asymmetric tubular filter element of the present invention is simple, can not only prepare thickness and hole
The film layer for the defects of footpath is uniform, flawless, pin hole, and production efficiency can be obviously improved.
It can be seen that the manufacture method of asymmetric tubular filter element base substrate of the invention introduces centrifugal principle traditional coating
Preparation process, not only technique is simple, and can obtain the highly uniform coating of thickness distribution.The asymmetric tubulose mistake of the present invention
The structure of the manufacturing equipment of filtering element base substrate is simple, can be obviously improved the preparation speed of coating.Using the asymmetric tubular filter
The manufacture method and manufacturing equipment of the manufacture method of element base substrate and the asymmetric tubular filter element of manufacturing equipment can be notable
Lifting prepares the production efficiency of asymmetric tubular filter element and the quality of film layer.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partly will become apparent from the description below, or the practice by the present invention
Solve.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for aiding in the understanding of the present invention, content provided in accompanying drawing and its
Explanation relevant in the present invention can be used for explaining the present invention, but not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the section view of the leaching membrane module of the manufacturing equipment of the asymmetric tubular filter element base substrate of the embodiment of the present invention 1
Figure.
Fig. 2 is the sealing of the manufacturing equipment of the manufacturing equipment of the asymmetric tubular filter element base substrate of the embodiment of the present invention 1
Portion and the sectional view of drive component.
Fig. 3 is the sealing of the manufacturing equipment of the manufacturing equipment of the asymmetric tubular filter element base substrate of the embodiment of the present invention 2
Portion and the sectional view of drive component.
Fig. 4 is the sealing of the manufacturing equipment of the manufacturing equipment of the asymmetric tubular filter element base substrate of the embodiment of the present invention 3
Portion and the sectional view of drive component.
Fig. 5 is the sealing of the manufacturing equipment of the manufacturing equipment of the asymmetric tubular filter element base substrate of the embodiment of the present invention 4
Portion and the sectional view of drive component.
Fig. 6 is the sealing of the manufacturing equipment of the manufacturing equipment of the asymmetric tubular filter element base substrate of the embodiment of the present invention 5
Portion and the sectional view of drive component.
Fig. 7 is the sealing of the manufacturing equipment of the manufacturing equipment of the asymmetric tubular filter element base substrate of the embodiment of the present invention 6
Portion and the sectional view of drive component.
Relevant mark in above-mentioned accompanying drawing for：
1：Supporter；
21：First sealing；
22：Second sealing；
3：Slurry stream passage；
4：Motor；
5：Rotating shaft；
51：First rotating shaft；
52：Second rotating shaft；
53：Hollow tubular portion；
54：Cylindrical portion；
6：First plug；
7：Slurry outlet；
8：Injected hole；
9：Second plug；
10：Detent mechanism；
11：Plug；
12：Discharging tube；
13：Valve；
14：Holding vessel；
15：Feed tube；
16：Pump；
17：Agitator.
Embodiment
Clear, complete explanation is carried out to the present invention below in conjunction with the accompanying drawings.Those of ordinary skill in the art are based on these
The present invention can be realized in the case of explanation.Before with reference to accompanying drawing, the present invention will be described, it is necessary to it is emphasized that：
Technical scheme and technical characteristic in the present invention provided in each several part including the description below, do not rushing
In the case of prominent, these technical schemes and technical characteristic can be mutually combined.
In addition, the embodiments of the invention being related in the description below are generally only the embodiment of a branch of the invention, and
The embodiment being not all of.Therefore, creativeness is not being made based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of work, should all belong to the scope of protection of the invention.
On term in the present invention and unit.Term in description and claims of this specification and relevant part
" comprising ", " having " and their any deformation, it is intended that cover non-exclusive include.
Asymmetric tubular filter element base substrate described in present invention below embodiment includes tubulose and porous
Supporter 1 and the coating positioned at the inwall of supporter 1, the inwall that the coating is attached to the supporter 1 by slurry pass through
Drying forms；Described asymmetric tubular filter element is formed by the asymmetric tubular filter element blank sintering, sintered
Cheng Zhong, the coating are converted into the film layer with filtering function.Term " air flux " refers to every per hour under every kPa of filter pressure
Square metre filter area under air infiltration capacity.
Embodiment 1
The manufacturing equipment of asymmetric tubular filter element base substrate as illustrated in fig. 1 and 2, including leaching membrane module, sealing with
And the drive component that the driving supporter 1 rotates in the horizontal direction.
The leaching membrane module includes holding when the holding vessel 14 of the slurry, feed arrangement and the supporter 1 are stood up
Plug 11, the discharging tube 12 through the plug 11 and the valve 13 on the discharging tube 12 that bottom coordinates.
The holding vessel 14 turns on the discharging tube 12.
The feed arrangement includes the feed tube 15 being connected with the holding vessel 14 and on the feed tube 15
Pump 16.
Agitator 17 is provided with the holding vessel 14.
The sealing includes the first sealing 21 and the second sealing 22 matched respectively with the both ends of supporter 1.
The material of first sealing 21, the second sealing 22 and plug 11 is elastomeric material, the elastomeric material
For rubber.
The drive component includes the rotating shaft 5 being connected with the sealing 22 of the first sealing 21 and second and driving institute
State the motor 4 of the rotation of rotating shaft 5.
Also include the detent mechanism 10 positioned to the rotating shaft 5.
Also include casing, the casing is provided with the turn hole matched with the rotating shaft 5.
Embodiment 2
The manufacturing equipment of the asymmetric tubular filter element base substrate of the present embodiment and the asymmetric tubulose mistake described in embodiment 1
The difference of the manufacturing equipment of filtering element base substrate is：As shown in figure 3, also including slip casting mechanism, the slip casting mechanism includes being located at
On first sealing 21 make the 1 inside and outside conducting of supporter slurry stream passage 3 and with the slurry
The first plug 6 that circulation passage 3 matches；The material of first plug 6 is elastomeric material, and the elastomeric material is rubber.
Embodiment 3
The manufacturing equipment of the asymmetric tubular filter element base substrate of the present embodiment and the asymmetric tubulose mistake described in embodiment 2
The difference of the manufacturing equipment of filtering element base substrate is：As shown in figure 4, second sealing 22 also is provided with the stream of slurry all
Road 3 and first plug 6.
Embodiment 4
The manufacturing equipment of the asymmetric tubular filter element base substrate of the present embodiment and the asymmetric tubulose mistake described in embodiment 1
The difference of the manufacturing equipment of filtering element base substrate is：As shown in figure 5, also including slip casting mechanism, the slip casting mechanism includes being located at
The slurry stream passage 3 for making the 1 inside and outside conducting of supporter on the sealing 22 of first sealing 21 and second；
The rotating shaft 5 includes the hollow tubular portion 53 for the pulp flow through the slurry stream passage 3, the slip casting mechanism
Also include being located at the slurry outlet 7 with the inside of supporter 1 conducting in the hollow tubular portion 53 inside the supporter 1
And the injected hole 8 in the hollow tubular portion 53 outside the supporter 1；The slip casting mechanism also include with it is described
The second plug 9 that injected hole 8 matches, second plug 9 are threadedly coupled with the injected hole 8.
Embodiment 5
The manufacturing equipment of the asymmetric tubular filter element base substrate of the present embodiment and the asymmetric tubulose mistake described in embodiment 1
The difference of the manufacturing equipment of filtering element base substrate is：As shown in fig. 6, also including slip casting mechanism, the slip casting mechanism includes being located at
The slurry stream passage 3 for making the 1 inside and outside conducting of supporter on second sealing 22；The rotating shaft 5 includes
The first rotating shaft 51 being connected with first sealing 21 and the second rotating shaft 52 being connected with second sealing 22, it is described
Second rotating shaft 52 includes cylindrical portion 54, and the cylindrical portion 54 coordinates with the slurry stream passage 3, and the slip casting mechanism also includes
Injected hole 8 in the cylindrical portion 54；The slip casting mechanism also includes the second plug 9 matched with the injected hole 8, institute
The second plug 9 is stated to be threadedly coupled with the injected hole 8.
Embodiment 6
The manufacturing equipment of the asymmetric tubular filter element base substrate of the present embodiment and the asymmetric tubulose mistake described in embodiment 5
The difference of the manufacturing equipment of filtering element base substrate is：As shown in fig. 7, it also is provided with the slurry stream on first sealing 21
Passage 3, accordingly, the first rotating shaft 51 include cylindrical portion 54, and the cylindrical portion 54 coordinates with the slurry stream passage 3,
The slip casting mechanism also includes the injected hole 8 in the cylindrical portion 54.
The manufacturing equipment of the asymmetric tubular filter element of the present invention includes the asymmetric tubulose mistake of one of embodiment 1~6
The manufacturing equipment of filtering element, the equipment for drying the asymmetric tubular filter element base substrate and the sintering asymmetric tubular filter
The equipment of element base substrate, wherein, dry the equipment of the asymmetric tubular filter element base substrate and sinter the asymmetric tubulose
The equipment of filter element base substrate is existing equipment.
In order to clearly illustrate the beneficial effect of the manufacture method of the asymmetric tubular filter element base substrate of the present invention, with
Under illustrated by specific embodiment 7~11, wherein, the embodiment 7~11 use embodiment 1 asymmetric tubulose mistake
The manufacturing equipment of filtering element base substrate.
The method for preparing asymmetric tubular filter element of embodiment 7~11 comprises the following steps：
(1) prepared by supporter 1：
1. using titanium valve and aluminium powder as the second raw material powder, by the titanium that particle diameter is -200~+400 mesh, parts by weight are 66.7 parts
The aluminium powder that powder and particle diameter are -200~+400 mesh, parts by weight are 33.3 parts is added in V-type batch mixer, batch mixing 8h；Described " -200
The implication of~+400 mesh " is：Represent that the second raw material powder can leak through from the mesh of 200 mesh and can not be leaked through from the mesh of 400 mesh,
When screening the second raw material powder of this mesh number, the screen cloth of 400 mesh is placed on below the screen cloth of 200 mesh, stayed on the screen cloth of 400 mesh
Under be -200~+400 the first powders of purpose；
2. being used as granulating agent from stearic acid, stearic acid is added in 70 DEG C of alcohol and dissolved, then by step 1. in it is mixed
The the second raw material powder got togather is added in mixer, and stearic acid solution is slowly uniformly added into during stirring, stirs 5h, then lead to
Cross comminutor to be granulated, screen cloth selects 30 mesh, then dries in 50 DEG C of baking oven；
3. assembly jig, then into mold cavity add be granulated after the second raw material powder, by cold isostatic press by its
Tubular supporter presoma is pressed into, is stripped；
4. the hollow ball that particle diameter is 30 mesh is put into the cavity of the supporter precursor, then by supporter presoma
It is fitted into sintering boat, right fed to boiler sintering, sintering temperature is 1250 DEG C, sintering time 6h, and be supported body 1 after cooling, institute
Thickness, internal diameter and the aperture for obtaining supporter 1 are shown in Table 1；
(2) slurry is configured：
1. the first raw material powder is added in V-type batch mixer by the particle diameter and type requirements of the first raw material powder in table 1, batch mixing
8h；Wherein, A is the aperture of supporter 1, and B is the particle diameter of titanium valve in the first raw material powder, and C is the particle diameter of aluminium powder in the first raw material powder；
2. ethylene glycol is added in absolute ethyl alcohol, volume ratio=1 of ethylene glycol and absolute ethyl alcohol:9, mixing mixes；
3. the first raw material powder mixed is slowly added in ethylene glycol alcohol blend during stirring, per 1g the
One raw material powder adds 2ml ethylene glycol absolute ethyl alcohol mixed liquors, stirs ultrasonic 10min again after 30min, that is, obtains slurry；
Table 1 is the composition and ratio of the first raw material powder.
(3) prepares coating：
1. the supporter 1 that step (1) is prepared installs according to annexation as shown in Figure 1, make the support
The inside of body 1 is full of the slurry and keeps at least 10s, and the specific retention time is shown in Table 2；
2. opening valve 13 and bleeding off the slurry inside the supporter 1, then pacify according to annexation as shown in Figure 2
Install；
3. starting motor 4, supporter 1 is set to rotate 2~20min under 100~500r/min rotating speed, it is specific to rotate ginseng
Number is shown in Table 2；
4. spontaneously drying 1h, that is, obtain asymmetric tubular filter element base substrate；
Table 2 is the parameter of technological parameter prepared by coating and coating.
(4) sinter：It is 50 purposes that particle diameter is put into the cavity containing cated supporter 1 that step (3) is prepared
Hollow ball, it is sintered according to the sintering parameter described in table 3, the programming rate of whole sintering process is 3 DEG C/min, and sintering is completed
Asymmetric tubular filter element is obtained, the aperture of the asymmetric tubular filter element and performance parameter are shown in Table 3.
Table 3 is the sintering process parameter of coating and the parameter of film layer.
It can be obtained by embodiment 7~11 to draw a conclusion：
1) when 1~3 times of the particle diameter that the aperture of the supporter 1 is the first raw material powder, it can be ensured that first is former
Feed powder is not thrown out of, and film layer and the adhesion of supporter 1 are stronger；Preferably, the aperture of the supporter 1 is first raw material
1.8~2.5 times of the particle diameter of powder；
2) pipe thickness of the supporter 1 is 1~6mm；When the internal diameter of the supporter 1 is 20~100mm, supporter
1 is unlikely to deform in rotation process, and now, the thickness of the coating is 0.01~2mm, can keep preferable filter effect
Under the premise of reduce filter pressure.Preferably, the pipe thickness of the supporter 1 is 2~4mm；The internal diameter of the supporter 1 is 30
~75mm；The thickness of the coating is 0.05~1mm；
3) when the supporter 1 rotate rotating speed be 100~500r/min, when the time of rotation is 2~20min, both may be used
To keep higher production efficiency, the first raw material powder can again be evenly distributed；Preferably, the rotating speed that the supporter 1 rotates
For 200~300r/min, the time of rotation is 5~15min；
4) when the particle diameter of the first raw material powder is 1~12 μm, the second raw material powder is that particle diameter is -200~+400 mesh
When, easily obtain the asymmetric tubular filter element that aperture is suitable, air flux is high；
5) when making the inside of the supporter 1 full of the slurry and keeping at least 10s, you can obtain coating.When making
When time of the inside full of the slurry for stating supporter 1 is 15~35s, the suitable coating of thickness can be obtained.
Embodiment 12
The difference of embodiment 12 and embodiment 9 is：Using the manufacture of the asymmetric tubular filter element base substrate of embodiment 5
Equipment, i.e., during prepares coating, after opening valve 13 and bleeding off the slurry inside the supporter 1, by supporter 1
Installed according to the annexation shown in Fig. 6, then inject 50 milliliters of slurry toward the inside of supporter from injected hole 8, so
After install the second plug 9 and start motor 4.The thickness of gained coating is 0.75mm.
The relevant content of the present invention is illustrated above.Those of ordinary skill in the art are in the feelings illustrated based on these
The present invention can be realized under condition.Based on the above of the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained on the premise of work, should all belong to the scope of protection of the invention.
Claims (10)
1. the manufacture method of asymmetric tubular filter element base substrate, the asymmetric tubular filter element base substrate includes tubulose and more
The supporter in hole and the coating positioned at the supporter inwall, the inwall that the coating is attached to the supporter by slurry pass through
Drying forms, and the described method comprises the following steps：
1) supporter and slurry are obtained：The slurry includes the first raw material powder and dispersant；The aperture of the supporter is described
1~3 times of the particle diameter of first raw material powder；
2) slip casting：The supporter is stood up and will blocked below the supporter, then fills the inside of the supporter
The full slurry simultaneously keeps at least 10s, the slurry in the supporter is flowed out naturally from below；
3) coating is prepared：The supporter is put upside down and seals the both ends of the supporter, then makes the supporter
Rotate in the horizontal direction, so that the first raw material powder in the slurry being had been injected into the supporter is attached under the action of the centrifugal
The inwall of the supporter, and the dispersant in the slurry having been injected into passes through the tube wall of the supporter under the action of the centrifugal, from
And obtain the precursor of the asymmetric tubular filter element base substrate；
4) dry：The precursor is dried, that is, obtains the asymmetric tubular filter element base substrate.
2. the manufacture method of asymmetric tubular filter element base substrate as claimed in claim 1, it is characterised in that：The supporter
Aperture be 1.8~2.5 times of particle diameter of the first raw material powder.
3. the manufacture method of asymmetric tubular filter element base substrate as claimed in claim 1, it is characterised in that：The supporter
Pipe thickness be 1~6mm；The internal diameter of the supporter is 20~100mm；The thickness of the coating is 0.01~2mm.
4. the manufacture method of asymmetric tubular filter element base substrate as claimed in claim 3, it is characterised in that：Make the support
Time of the inside of body full of the slurry is 15~35s.
5. the manufacture method of asymmetric tubular filter element base substrate as claimed in claim 1, it is characterised in that：The supporter
The rotating speed of rotation is 100~500r/min, and the time of rotation is 2~20min.
6. the manufacture method of asymmetric tubular filter element base substrate as claimed in claim 1, it is characterised in that：The supporter
Preparation comprise the following steps：
1) the second raw material powder is prepared, the second raw material powder is then pressed into supporter presoma, the supporter presoma tool
There is the shape of the supporter；
2) the supporter presoma is sintered, that is, obtains the supporter.
7. the manufacture method of asymmetric tubular filter element base substrate as claimed in claim 1, it is characterised in that：This method uses
Equipment include the drive component that leaching membrane module, sealing and the driving supporter rotate in the horizontal direction；The leaching film
Component include feed arrangement, with the supporter stand up when bottom coordinate plug, the discharging tube through the plug and
Valve on the discharging tube；The sealing includes the first sealing for being matched respectively with the supporter both ends and the
Two sealings；The drive component includes the rotating shaft being connected with first sealing and the second sealing and described turn of driving
The motor that axle rotates.
8. the manufacture method of asymmetric tubular filter element, comprises the following steps：
1) manufacture method using the asymmetric tubular filter element base substrate described in one of claim 1~7 is asymmetric to prepare
Tubular filter element base substrate；
2) by the asymmetric tubular filter element blank sintering, turn the coating in the asymmetric tubular filter element base substrate
The film layer with filtering function is turned to, that is, obtains the asymmetric tubular filter element.
9. the manufacture method of asymmetric tubular filter element as claimed in claim 8, it is characterised in that：The supporter and institute
Film layer is stated to be made up of the sintering diamond bit of the same race with compatibility or sintering ceramic porous material.
10. the manufacture method of asymmetric tubular filter element as claimed in claim 8, it is characterised in that：First raw material
The particle diameter of powder is 1~12 μm；The second raw material powder is that particle diameter is -200~+400 mesh.
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| CN201710637642.6A CN107519764B (en) | 2017-07-31 | 2017-07-31 | Method for producing an asymmetric tubular filter element blank and use thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2614808A1 (en) * | 1987-05-06 | 1988-11-10 | Castelletto Jean Paul | Method for producing thin layers of uniform thickness by coating a support and equipment for implementing this method |
| CN1708348A (en) * | 2002-10-25 | 2005-12-14 | 高技术与膜工业公司 | Membrane for tangential filtration and production method thereof |
| CN1947861A (en) * | 2006-11-03 | 2007-04-18 | 西北有色金属研究院 | Micro-porous metal film prepn. method |
| CN101323528A (en) * | 2008-07-15 | 2008-12-17 | 南京工业大学 | Preparation of continuous hole graded ceramic tube |
| CN104307258A (en) * | 2014-09-30 | 2015-01-28 | 成都易态科技有限公司 | Asymmetric sintered inorganic porous filtering element and preparation process thereof |
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2017
- 2017-07-31 CN CN201710637642.6A patent/CN107519764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2614808A1 (en) * | 1987-05-06 | 1988-11-10 | Castelletto Jean Paul | Method for producing thin layers of uniform thickness by coating a support and equipment for implementing this method |
| CN1708348A (en) * | 2002-10-25 | 2005-12-14 | 高技术与膜工业公司 | Membrane for tangential filtration and production method thereof |
| CN1947861A (en) * | 2006-11-03 | 2007-04-18 | 西北有色金属研究院 | Micro-porous metal film prepn. method |
| CN101323528A (en) * | 2008-07-15 | 2008-12-17 | 南京工业大学 | Preparation of continuous hole graded ceramic tube |
| CN104307258A (en) * | 2014-09-30 | 2015-01-28 | 成都易态科技有限公司 | Asymmetric sintered inorganic porous filtering element and preparation process thereof |
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