CN103480185A - Composite slag remover and manufacturing process thereof - Google Patents
Composite slag remover and manufacturing process thereof Download PDFInfo
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- CN103480185A CN103480185A CN201310426965.2A CN201310426965A CN103480185A CN 103480185 A CN103480185 A CN 103480185A CN 201310426965 A CN201310426965 A CN 201310426965A CN 103480185 A CN103480185 A CN 103480185A
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Abstract
The invention provides a composite slag remover and a manufacturing process thereof, and belongs to the field of pulp slag removal equipment. The composite slag remover comprises an inner container (1) made of ceramic. The composite slag remover is characterized in that a layer of high molecular elastic material (2) coats the outer side of the inner container (1), and the inner container (1) and the high molecular elastic material (2) are composited into an integrated structure. The manufacturing process of the composite slag remover sequentially includes the steps that a green body, made of aluminum oxide, of the inner container (1) is prepared in an isostatic pressing mode under the pressure of 120-300Mpa, a numerically controlled lathe is utilized to turn the inner side and the outer side of the green body of the inner container (1), the green body is fired into the inner container (1), the molten high molecular elastic material (2) coats the outer side of the inner container (1) under the pressure of 20-30Mpa, and vulcanization is conducted. The composite slag remover has the advantages of being high in strength, light in weight, accurate in installing geometric dimension, convenient to install, low in using cost and friction coefficients of the ceramic inner container, and capable of improving the paper pulp purifying rate and achieving energy saving and environment friendliness.
Description
Technical field
Composite scummer and manufacture craft thereof, belong to slurries slag removal equipment field, is specifically related to a kind of composite scummer of ceramic liner, and the technique of making this composite scummer.
Background technology
Scummer is widely used in papermaking at present, in chemical field, slurries form high-speed rotational at the scummer inwall, impurity in slurries causes very large wearing and tearing to the scummer inwall, a kind of plastic cement pottery scummer appearred afterwards, its scummer epimere is used plastic cement, hypomere is used pottery, the plastic cement of scummer epimere is easy to frayed, service life is short, Chinese patent 201220738296.3 discloses a kind of cone inner core of HC Cleaner, its inner core is made by ceramic material, ceramic material frictional force is little, improved the recovery utilization rate of slurry, but this scummer has following shortcoming:
1, heavy, fire energy consumption high, install inconveniently, the inner core of ceramic material has frangible defect, thus inner core must be done very thick, current ceramic inner core is generally the 15cm left and right, and heavier, cost is very high, and, when firing, energy consumption is very large, install inconvenient simultaneously; At arranged outside one deck housing of inner core, prevent that accident from encountering inner core, once encountering, the inner core of ceramic material is easy to fragmentation.
2, the problem that is tightly connected, inner core, for ease of processing, is all sectional making, the inapplicable flange of the inner core of ceramic material connects, and while using conventional clamp connection, ceramic material can not be used very large power, clip tightly easily clips broken inner core very much, so do not reach sealing fully with conventional clip.
3, the making of the inner core of current ceramic material is all to adopt manual injection forming, still has the shortcoming that coefficient of friction is high, energy consumption is high, environmental pollution is serious, the pulp purifiation rate is low, the installation dimension error is large; The ceramic liner crystallite dimension of manual slip casting is 0.2～1 μ m, and relative density is low, insufficient strength, and the large granular impurity in slurry easily smashes inner bag.
4, the macromolecular material intensity difference such as existing rubber, and cause poor stability owing to thering is elasticity, be difficult to realize being complex as a whole with ceramic material.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide that a kind of intensity is high, easy for installation, cost is low, the pulp purifiation rate is high, composite scummer and the manufacture craft thereof of energy-conserving and environment-protective.
The technical solution adopted for the present invention to solve the technical problems is: this composite scummer, the inner bag that comprises ceramic material, inner bag is provided with good slurry outlet, paper pulp entrance and slag notch from top to bottom successively, it is characterized in that: the described inner bag outside is coated with one deck macromolecular material, and inner bag and macromolecular material are complex as a whole structure.Effectively improve the intensity of ceramic material inner bag, overcome the frangible shortcoming of ceramic material, easy for installation, do not need side outside the tank that containment vessel is set again.
The alumina crystallites pottery that described inner bag is isostatic compaction, the inner bag wall thickness is 3～7cm.Utilize isostatic compaction to improve the packing of inner bag, when guaranteeing inner bag intensity, reduced the wall thickness of inner bag, thereby reduced the weight of inner bag, easier for installation, reduce the consumption of alumina source material, made the natural gas consumption of firing the Unit Weight ceramic product reduce by 50%, reduced the manufacturing cost of composite scummer itself.
Described inner bag top is cylindric, and middle and lower part is the cone tubular, and inner bag is by the multistage drum shaft to constituting, and each section cylindrical shell connects end and have annular groove or projection, the docking of each section concavo-convex cooperation of cylindrical shell by clamp connection.By concavo-convex cooperation, improved sealing when each section cylindrical shell connects.
Described clip comprises the fastener of establishing annular ring jaggy and being positioned at indentation, there, and the annular ring clear width is provided with the compressive deformation section of metal material, and compressive deformation section is laterally zygomorphic trapezoidal bending structure; Be provided with sealing ring between clip and inner bag.Utilize compressive deformation section when press seal connects cylindrical shell, prevent that clip from causing damage to frangible ceramic liner.
A kind of manufacture craft of above-mentioned composite scummer is characterized in that: comprise the following steps:
Step 3, utilize that numerically controlled lathe is inboard to the base substrate of inner bag, car system carry out in the outside, the base substrate inboard is processed as to shiny surface, in base substrate outside machined grooves; The base substrate inboard is smooth, reduces coefficient of friction, has improved the rate of recovery of paper pulp, the cutter of numerically controlled lathe uses ceramic tip, the base substrate inboard can be processed as to smooth minute surface, further improves the rate of recovery of paper pulp, base substrate outside machined grooves, be beneficial to macromolecular material and base substrate is complex as a whole;
Step 4, base substrate are fired and within 30～40 hours, are configured as inner bag under 1550 ℃;
Step 5, the macromolecular material of melting in step 1 is coated on to the inner bag outside;
Step 6, the macromolecular material in the inner bag outside is vulcanized.
To be nylon, Merlon, polyurethane, carbon fiber be heated to 270 ℃ and vacuumize the composite that abundant stirring forms afterwards according to part by weight 65%, 19%, 11%, 5% to macromolecular material described in step 1.Utilize carbon fiber strength high, lightweight, there is no flexible characteristics, can effectively reduce the coefficient of expansion of composite after the interpolation carbon fiber, improve stability, make scummer can adapt to high temperature, large granular impurity and cause the significantly severe working environment of vibrations, rising along with temperature, the intensity of macromolecular material is better, can adapt to worse working environment.
The composite that macromolecular material described in step 1 is a kind of in nylon, Merlon and polyurethane or any two kinds.
Preferably, in step 2, hydrostatic pressure is 160Mpa.Inner bag pottery transformation of crystal after product under the 160Mpa compacting is fired is reasonable, crystallite dimension is 1.6 μ m, approach theoretical numerical value, the relative density of inner bag reaches 99.8%, the intensity of inner bag is high, good toughness, reduces the inner bag wall thickness in proof strength, and energy-conserving and environment-protective, technique are simple, the coefficient of friction of scummer is low, and the ceramic liner intensity of comparing injection forming improves 4～5 times.Use and prove that the life-span is 5 times of slip casting ceramic scummer.
Described step 5 specifically comprises the following steps:
Step 5.1, at the inboard coating release agent of coating mould, inner bag is put into to coating mould and is heated to 90 ℃;
Step 5.2, by the macromolecular material of melting be injected into coating mould inboard with inner bag outside between;
Step 5.3, inner bag are taken out after 40～60 minutes with coating mould 20～30Mpa sulfuration of pressurizeing together.
In described step 6, curing temperature is 90 ℃, and cure time is 4～8 hours.Through experimental results demonstrate, select the curing temperature of 90 ℃, through the long-time sulfuration of 4～8 hours, can make that macromolecular material and inner bag are optimized to be complex as a whole, effectively improve the service life of scummer.
Compared with prior art, the beneficial effect that composite scummer of the present invention and manufacture craft thereof have is:
1, intensity is high; macromolecular material is coated on to the inner bag outside; macromolecular material and inner bag are complex as a whole structure; effectively improved the intensity of ceramic material inner bag; overcome the frangible shortcoming of ceramic material; physical dimension is installed accurate, easy for installation, does not need side outside the tank that containment vessel is set again.
2, lightweight, cost is low, utilizes isostatic compaction to improve the packing of inner bag, when guaranteeing inner bag intensity, reduce the wall thickness of inner bag, thereby reduced the weight of inner bag, easier for installation, reduce the consumption of alumina source material, reduced production cost.
3, form inner bag the concavo-convex cooperation of multistage cylindrical shell docking and by clamp connection, reached hermetic requirement, utilize the compressive deformation section of clip in press seal connection cylindrical shell, prevent that clip from causing damage to frangible ceramic liner.
4, more reasonable through the aluminium oxide green density of isostatic compaction, inner bag pottery transformation of crystal after can making to fire is more reasonable, under 120～300Mpa, the crystallite dimension of inner bag is 1.5～2 μ m, relative density can reach 99.8%, the intensity of inner bag is higher, and coefficient of friction is lower, and the ceramic liner intensity of comparing injection forming improves 4～5 times.Overcome the frangible problem of ceramic material, reduced its wall thickness when improving inner bag intensity, be only 3～7cm, reduced the consumption of alumina source material, reduced production cost, and it is energy-conservation 50% that the inner bag of 5cm thickness is fired to the inner bag of relatively firing 15cm, further reduces production costs, shorten the firing time, enhance productivity.
5, utilize numerically controlled lathe carry out car system to inner side of liner, the outside, in conjunction with traditional ceramics manufacture craft and modernization processing technology, effectively improved the dimensional accuracy of inner bag, the inner side of liner coefficient of friction is further reduced, improve the purifying rate of paper pulp, can make the rate of recovery of paper pulp improve 10% left and right, improved the installation accuracy of inner bag simultaneously, guarantee to be tightly connected between each cylindrical shell, guarantee that inner bag accurately is connected with pipeline; The groove of the outer sidecar system of inner bag is relatively coarse, can be better and macromolecular material be complex as fine and close integrative-structure, raising service life.
6, coating mould, with the inner bag 20～30Mpa sulfuration 40～60 minutes of pressurizeing together, can make macromolecular material fit tightly side outside the tank by pressurization, further ensures that both are seamless to be complex as a whole, and guarantees the intensity of inner bag.
The accompanying drawing explanation
Fig. 1 is the structural representation of composite scummer of the present invention.
Fig. 2 is two sections cutaway view schematic diagrames that cylindrical shell connects in the present invention.
Fig. 3 is the local enlarged diagram at A place in Fig. 2.
Fig. 4 is the structural representation of clip.
Fig. 5 is the clip schematic cross-section.
Fig. 6 is the structural representation that clip is provided with the stop buckle.
Wherein: 1, inner bag 2, macromolecular material 3, good slurry outlet 4, main body 5, advance slurry 6, paper pulp entrance 7, clip 701, annular ring 702, compressive deformation section 703, screw rod 704, arresting lever 705, locking groove 706, stop buckle 8, cone 9, slag notch 10, rinse mouth.
The specific embodiment
Fig. 1 ~ 5th, the most preferred embodiment of composite scummer of the present invention and manufacture craft thereof, below in conjunction with accompanying drawing 1 ~ 6, the present invention will be further described.
With reference to accompanying drawing 1: the composite scummer, comprise successively main body 4 cylindraceous from top to bottom, advance the cone 8 of slurry 5 and up big and down small cone tubular, main body 4 upper ends are provided with end cap, tangentially be provided with good slurry outlet 3 on end cap, advance on slurry 5 and tangentially be provided with paper pulp entrance 6, paper pulp entrance 6 lays respectively at both sides with good slurry outlet 3 wherein, and cone 8 lower ends are provided with horizontal slag notch 9, and bottom is provided with vertical rinse mouth 10.
With reference to Fig. 2～3, main body 4, advance the alumina crystallites ceramic liner 1 that slurry 5 and cone 8 all have isostatic compaction, inner bag 1 outside is enclosed with one deck macromolecular material 2, inner bag 1 and the integrative-structure of macromolecular material 2 for being combined with each other, inner bag 1 thickness is 5cm, the scummer that the weight relative thickness is 15cm is much smaller, install, dismantle convenient, improved the density of inner bag 1 by isostatic compaction, and then improved the intensity of inner bag 1, overcome the frangible problem of ceramic material, inner bag 1 is complex as a whole structure with macromolecular material 2, by 2 pairs of inner bags 1 of macromolecular material, effectively protect, be convenient to install.
There is annular groove main body 4, the upper end of advancing slurry 5 and cone 8, bottom is to have annular projection, main body 4, advances slurry 5 and is connected the concavo-convex cooperation in end with cone 8, and be fixedly connected with by clip 7, also be provided with sealing ring in clip 7 inboards, guarantee the sealing of junction.
With reference to Fig. 4～5, clip 7 is two standby clips, comprise the fastener of establishing annular ring 701 jaggy and being positioned at indentation, there, annular ring 701 clear widths are provided with the compressive deformation section 702 of three metal materials, the cross section of compressive deformation section 702 is trapezoidal bending, narrower bottom is fixed on annular ring 701 medial surfaces, wider peristome is to two lateral bucklings, fastener is screw rod 703, screw rod 703 ends have vertical arresting lever 704, screw rod 703 is fixed on breach one side in axial sliding, the breach opposite side is provided with the locking groove 705 coordinated with arresting lever 704, arresting lever 704 is fastened in locking groove 705, nut on rotating screw bolt 703 just can be realized the contraction of breach, when annular ring 701 shrinks, the two side direction both sides that bend after compressive deformation section 702 pressurizeds are continued bending and are produced distortion, be pressed on the end that scummer connects cylindrical shell, guarantee that sealing is reliable, screw rod 703 is fixing by arresting lever 704 simultaneously, only need rotating nut just can realize fastening, easy installation and removal, increase work efficiency.
The slag removal of paper pulp is: paper pulp is tangentially entered in scummer and is formed circulation by paper pulp entrance 6, good slurry proportion is little, upwards through tangential good slurry outlet 3, discharge, impurity is discharged by slag notch 9 downwards than great, flushing water upwards enters in scummer through rinse mouth 10, and the slurries of bottom are carried out to clean and reuse.
Its manufacture craft of a kind of above-mentioned composite scummer comprises the following steps:
Specific operation process makes its melting for PA, PC, PU, carbon fiber are heated to 270 ℃ according to part by weight 65%, 19%, 11%, 5%, vacuumizes abundant stirring and makes four kinds of materials merge the formation composite, standby under vacuum state, anti-oxidation.
Under step 2,160Mpa, pressurization is 30 minutes, utilizes iso-static pressure shaping machine, the base substrate of the inner bag 1 of the standby aluminium oxide material of isostatic pressing;
Aluminium oxide green density through the 160Mpa isostatic compaction is reasonable, the ceramic transformation of crystal of inner bag 1 after firing is reasonable, the crystallite dimension of inner bag 1 is 1.6 μ m, approach theoretical numerical value, the relative density of inner bag 1 reaches 99.8%, inner bag 1 intensity is high, good toughness, the ceramic liner intensity of comparing injection forming improves 4～5 times, overcome the frangible problem of ceramic material, reduced its wall thickness when improving inner bag 1 intensity, be only 5cm, reduced the consumption of alumina source material, reduced production cost, and the inner bag 1 of 5cm thickness is fired to the inner bag of relatively firing 15cm energy-conservation 50%, further reduce production costs, shorten the firing time, enhance productivity.
Step 3, utilize that numerically controlled lathe is inboard to the base substrate of inner bag 1, car system carry out in the outside, the base substrate inboard is processed as to smooth mirror surface, in base substrate outside machined grooves;
Car system through numerically controlled lathe, effectively improved the dimensional accuracy of inner bag 1, inboard process very smooth of inner bag 1, reduced the coefficient of friction of inner bag 1 inboard, improve the purifying rate of paper pulp, can make the rate of recovery of paper pulp improve 10%, improved the installation accuracy of inner bag 1 simultaneously, guarantee to be tightly connected between each cylindrical shell, guarantee that inner bag 1 accurately is connected with pipeline; The outer sidecar of inner bag 1 groove processed, make inner bag 1 outside relatively coarse, can be better and macromolecular material 2 be complex as a whole structure.
Step 4, base substrate are fired and within 30～40 hours, are configured as inner bag 1 under 1550 ℃;
Step 5, the macromolecular material of melting in step 12 is coated on to inner bag 1 outside;
Concrete steps are as follows:
Step 5.1, at the inboard coating release agent of coating mould, inner bag 1 is put into to coating mould and is heated to 90 ℃; Coating mould is heated in advance, the macromolecular material 2 that prevents melting is met cold curing, be convenient to macromolecular material 2 and be coated on inner bag 1 outside, form integrative-structure, coating release agent can prevent that macromolecular material 2 from pasting in coating mould, avoids destroying macromolecular material 2 when taking out inner bag 1.
Step 5.2, the macromolecular material of melting 2 is injected between inboard and inner bag 1 outside of coating mould;
Step 5.3, coating mould are with the inner bag 1 26Mpa sulfuration 50 minutes of pressurizeing together.Under the pressure of 26Mpa, can make macromolecular material 2 fit tightly in inner bag 1 outside, further ensure that seamless link is integrated between the two, guarantee the intensity of inner bag 1, vulcanize and within 50 minutes, can make macromolecular material 2 became one, be convenient to take out in coating mould.
Step 6, the inner bag 1 that will be coated with macromolecular material 2 are put into vulcanizer and are heated to 90 ℃, vulcanize 4～8 hours.Through experimental results demonstrate, select the curing temperature of 90 ℃, through the long-time sulfuration of 4～8 hours, can make macromolecular material 2 be complex as a whole with inner bag 1 is optimized, effectively improve the service life of scummer.
Step 7, utilize clip 7 that each section cylindrical shell is connected to integral body, form the composite scummer.
The present invention can also adopt following structure, method:
In the present invention, macromolecular material 2 is according to different environments for use, can adopt and use different materials, can adopt in PA, PC and PU a kind of material or the composite of any two kinds wherein, also can adopt the composite of PA, PC and other part by weight of PU; Macromolecular material 2 can be a kind of material or the composite of any two kinds wherein in PA, PC and PU, adds in addition carbon fiber or glass fibre that weight ratio is 5%, effectively increases the stability of macromolecular material 2; Macromolecular material 2 can also be the composite that PA, PC, PU, glass fibre form according to part by weight 65%, 19%, 11%, 5%.
In the present invention, the melt temperature of macromolecular material 2 can be selected in the scope of 110～270 ℃, heating-up temperature is selected according to the working environment of scummer and the component of macromolecular material 2, rising gradually along with temperature, the intensity of macromolecular material 2 is better, can better protect inner bag 1, can adapt to worse environment, scummer can bear the significantly vibrations that large granular impurity causes, certain rising gradually along with temperature, also just higher to technological requirement, before coating, inner bag 1 and coating mould heating-up temperature are also wanted corresponding raising, if inner bag 1 is large with the macromolecular material 2 temperature difference of melting, can cause both can't be complex as a whole structure.
The medium static pressure of the present invention prepares the pressure of the inner bag 1 of aluminium oxide material can select 120～300Mpa, and when pressure is 120 Mpa, the crystallite dimension of inner bag 1 is 1.5 μ m, when pressure is 160 Mpa, the crystallite dimension of inner bag 1 is 1.6 μ m, when pressure is 200Mpa, the crystallite dimension of inner bag 1 is 1.8 μ m, when pressure is 300 Mpa, the crystallite dimension of inner bag 1 is 2 μ m, the crystallite dimension of inner bag 1 increases along with the increase of hydrostatic pressure, the relative density of inner bag 1 can reach 99.8%, effectively increase intensity and the toughness of inner bag 1, pressure is selected according to scummer size and working environment, the scummer diameter is larger, require inner bag 1 that better toughness is arranged, in slurries, contain under the severe working environment such as large granular impurity, especially in the paper pulp slagging-off, scummer easily produces significantly vibrations, the inner bag 1 of ceramic material is frangible, so require inner bag 1 to there is intensity and toughness preferably.
With reference to Fig. 6, annular ring 701 breach one sides are rotated and are fixed with stop buckle 706, and the interior side shield of stop buckle 706 is offered groove, and screw rod 703 is through the groove of stop buckle 706, and while using clip 7, pivot stop buckle 706 can be installed easily, dismantle.
Composite scummer of the present invention can remove the gred for paper pulp, can also be for the slagging-off of other chemical industry slurries.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a composite scummer, the inner bag (1) that comprises ceramic material, inner bag (1) is provided with good slurry outlet (3), paper pulp entrance (6) and slag notch (9) from top to bottom successively, it is characterized in that: described inner bag (1) outside is coated with one deck macromolecular material (2), and inner bag (1) is complex as a whole structure with macromolecular material (2).
2. composite scummer according to claim 1, it is characterized in that: described inner bag (1) is the alumina crystallites pottery of isostatic compaction, inner bag (1) wall thickness is 3～7cm.
3. composite scummer according to claim 1, it is characterized in that: described inner bag (1) top is cylindric, middle and lower part is the cone tubular, inner bag (1) by the multistage drum shaft to constituting, each section cylindrical shell connects end and has annular groove or projection, and the docking of each section concavo-convex cooperation of cylindrical shell also connects by clip (7).
4. composite scummer according to claim 3, it is characterized in that: described clip (7) comprises the fastener of establishing annular ring jaggy (701) and being positioned at indentation, there, annular ring (701) clear width is provided with the compressive deformation section (702) of metal material, and compressive deformation section (702) is laterally zygomorphic trapezoidal bending structure; Be provided with sealing ring between clip (7) and inner bag (1).
5. the manufacture craft of the described composite scummer of claim 1～4 is characterized in that: comprise the following steps:
Step 1, macromolecular material (2) is heated to melting, vacuumizes standby;
The base substrate of the ceramic liner (1) of step 2, the standby aluminium oxide material of 120～300Mpa isostatic pressing;
Step 3, utilize that numerically controlled lathe is inboard to the base substrate of inner bag (1), car system carry out in the outside, the base substrate inboard is processed as to shiny surface, in base substrate outside machined grooves;
Step 4, base substrate are fired and within 30～40 hours, are configured as ceramic liner (1) under 1550 ℃;
Step 5, the macromolecular material of melting in step 1 (2) is coated on to inner bag (1) outside;
Step 6, the macromolecular material (2) in inner bag (1) outside is vulcanized.
6. the manufacture craft of composite scummer according to claim 5 is characterized in that: macromolecular material described in step 1 (2) is heated to 270 ℃ and vacuumize the composite that abundant stirring forms afterwards for nylon, Merlon, polyurethane, carbon fiber according to part by weight 65%, 19%, 11%, 5%.
7. the manufacture craft of composite scummer according to claim 5 is characterized in that: the composite that macromolecular material described in step 1 (2) is a kind of in nylon, Merlon and polyurethane or any two kinds.
8. the manufacture craft of composite scummer according to claim 5, it is characterized in that: in step 2, hydrostatic pressure is 160Mpa.
9. the manufacture craft of composite scummer according to claim 5, it is characterized in that: described step 5 specifically comprises the following steps:
Step 5.1, at the inboard coating release agent of coating mould, inner bag (1) is put into to coating mould and is heated to 90 ℃;
Step 5.2, by the macromolecular material of melting (2) be injected into coating mould inboard with inner bag (1) outside between;
Step 5.3, inner bag (1) are taken out after 40～60 minutes with coating mould 20～30Mpa sulfuration of pressurizeing together.
10. the manufacture craft of composite scummer according to claim 5, it is characterized in that: in described step 6, curing temperature is 90 ℃, cure time is 4～8 hours.
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| CN103480185B (en) | 2015-03-25 |
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