CN105352295A - Acid- and alkali-resistant stirring drier - Google Patents
Acid- and alkali-resistant stirring drier Download PDFInfo
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- CN105352295A CN105352295A CN201510839633.6A CN201510839633A CN105352295A CN 105352295 A CN105352295 A CN 105352295A CN 201510839633 A CN201510839633 A CN 201510839633A CN 105352295 A CN105352295 A CN 105352295A
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Abstract
The invention discloses an acid- and alkali-resistant stirring drier. The acid- and alkali-resistant stirring drier comprises a barrel cover which is arranged at the upper end of a barrel cylinder, a feeding port which is formed in one upper side of the barrel cover, an air exhausting device which is arranged at the other upper side of the barrel cover, and a stirring device which is arranged in the upper middle of the barrel cover, wherein a slipping-aiding wear-resisting layer is arranged on the inner wall of the barrel cylinder; a plurality of U-shaped grooves are excavated in the outer wall of the barrel cylinder; a barrel body is arranged at the outer part of the barrel cylinder, and a discharging port is formed in the lower end of the barrel cylinder; a heat insulation layer is also arranged between the barrel body and the barrel cylinder, and a vertical slot is formed in the surface of the heat insulation layer. With the adoption of the acid- and alkali-resistant stirring drier, the problem of low efficiency of the drier in the heat exchanging process can be solved, and the damage caused by that the inside of the drier is affected with damp can be removed; meanwhile, a material for the barrel cylinder is also provided, thus various comprehensive performances of the barrel cylinder are improved, and the service life is prolonged.
Description
Technical field
The present invention relates to drying device field, particularly the acidproof alkaline stirring drier of one.
Background technology
Vacuum drier aims at dry heat sensitivity, easily decomposition and readily oxidizable substance and designs, and internally can be filled with inert gas, particularly the article of some complicated components also can carry out rapid draing.Vacuum drier is by after pumping packing container inner air and reaching predetermined vacuum level, remove the equipment of member inside container moisture, aim at dry heat sensitivity, easily decomposition and readily oxidizable substance and design, internally can be filled with inert gas, the article of some complicated components also can carry out rapid draing especially.
In existing vacuum stirring-up drying machine, defect is there is in heating heat exchange, when namely passing into steam in drying machine, the heat of steam is not fully used, with in cylinder cylinder during heat exchange, heat-exchange time is short, and heat exchange is uneven, a large amount of steam is also underused and is just discharged outside machine, and heat exchange efficiency is low.In existing stirring drier, cylinder cylinder metal material is made, and scraper plate is generally made by wear-resisting nonmetallic materials, in continuous print work, on cylinder cylinder, erasure one circle slot scraping can be scraped by inwall, and scraper plate also can wear and tear due to the friction a large amount of with metal, have impact on the service life of parts, simultaneously, at work, because agitating device is High Rotation Speed, cause this friction can produce larger audible noise, cause noise pollution, harmful workman's is healthy.In scraper-type stirring drier, the medium of general heating is high-temperature steam, high-temperature steam is when giving drying machine heat exchange, can drip by condensation of water, the water of existing structure to condensation place does not have processing mode, a condensed water part is caused to be attached on a cylinder outer wall and cylinder inboard wall, another part is then full of in enclosed cavity with steam, the condensed water being attached to cylinder body outer wall can make a big impact to the heat-insulation layer of cylindrical shell, can make heat-insulation layer make moist expand lost efficacy, and then come off, be attached to a condensed water of cylinder outer wall then can cause corrosion harm to cylinder cylinder, cut short the service life of cylinder cylinder.Because cylinder cylinder directly contacts material, this just requires a cylinder except possessing outstanding mechanical performance, also must possess good Corrosion Protection, existing stainless steel cylinder cylinder is good not enough in anticorrosion, antagonism soda acid and intercrystalline corrosion lack in ability, and are therefore badly in need of a kind of new stainless steel material and substitute.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, a kind of acidproof alkaline stirring drier is provided, solve the problem that drying machine efficiency in heat transfer process is lower, eliminate in drying machine brought harm of making moist, simultaneously, a kind of cylinder cylinder material is also provided, makes the every combination property of a cylinder more excellent, longer service life.
The technical solution used in the present invention is as follows: a kind of acidproof alkaline stirring drier, comprise and be located at a cover for cylinder upper end, be located at the charging aperture at the upper side of cover, be located at the air extractor of opposite side above cover, be located at the agitating device in the middle of above cover, the inwall of described cylinder cylinder is provided with one deck and increases sliding wearing layer, cylinder cylinder outer wall is dug some U-lags, described cylinder cylinder outside is provided with cylindrical shell, cylinder cylinder lower end is provided with a discharging opening, also be provided with heat-insulation layer between described cylindrical shell and described cylinder cylinder, described insulation layer surface is provided with vertical groove.
Further, the thickness of described cylinder cylinder is 1-5mm, the degree of depth of the U-lag of cylinder cylinder outer wall is 0.5-1mm, width is 1-3mm, and every bar U-lag equi-spaced apart is wrapped on a cylinder, the described thickness increasing sliding wearing layer is 50-300 μm, and adopt teflon coating to make, described teflon coating is coated on the described cylinder inside wall of cylinder equably.
Due to the setting of said structure, at the inwall of cylinder cylinder, the sliding wearing layer of increasing that one deck teflon coating is sprayed into is set, because polytetrafluoroethylene (PTFE) has antiacid alkali resistant, anti-various organic solvent, be dissolved in all solvents hardly, the feature that high temperature resistant and coefficient of friction is extremely low, scraper plate is in rotation process, and amount of friction is few between cylinder cylinder, the frictional force produced is also less, between scraper plate and cylinder cylinder, wearing and tearing seldom, and then the noise intensity produced is low, decibel is low, and the quality of polytetrafluoroethylene floor to material of adding has no effect, solve the problem that scraper plate and cylinder cylinder rub, cylinder cylinder arranges U-lag can allow steam flow along U-lag, and for heat exchange provides heat transfer boundary condition, improve the contact area of heat exchange, further heat exchange efficiency is improved, heat-insulation layer being arranged groove is to allow condensed water can better be pooled to a place, is convenient to discharge outside enclosed cavity.
Further, the thickness of described heat-insulation layer is 5-20mm, and described heat-insulation layer is provided with heat-insulating shield near discharge outlet, and the bottom of heat-insulation layer seals by described heat-insulating shield completely, is fixedly mounted between described cylinder cylinder and described cylindrical shell, and thickness is 5-10mm.
Further, the lower surface of described cylinder cylinder is provided with a circle assembling groove, match with described assembling groove in the top of described heat-insulating shield, heat-insulating shield coordinate with cylinder cylinder install after need to seal with casting glue to assemble gap, the side of the middle and upper part of described cylindrical shell is provided with a steam (vapor) outlet, and cylindrical shell lower end is provided with a steam inlet away from the side of described steam (vapor) outlet.
Further, described cylindrical shell is concealed, the bridging type or bayonet joint that mutually mate near the end of discharge outlet and the lower surface of described heat-insulating shield, and cylindrical shell needs to assemble gap with welded seal after the end of discharge outlet and heat-insulating shield are installed.
Further, the heat-insulation layer of described cylindrical shell lower end is a hypotenuse, lower one end place of the one side that described heat-insulation layer tilts is provided with a condensation-water drain, namely condensation-water drain is provided with at the offside of described steam inlet same level, described condensation-water drain is located at the lower end of described cylindrical shell, and through heat-insulation layer, a valve is provided with in condensation-water drain, described valve is two half moon thin slices be separated, toward each other, root is connected with described condensation-water drain inwall, its free edge is towards the outer wall of described cylindrical shell lower end, original state is closed form, valve material therefor is high resiliency silica gel.
Due to the setting of said structure, realization in heating space can be made to seal completely, decrease the loss of heat, the object arranging condensation-water drain in cylindrical shell lower end is, the high-temperature steam passed into can condense water droplet after heat exchange, these water droplets can be stayed in a cylinder outer wall and insulation layer surface, cylinder cylinder and heat-insulation layer are worked the mischief, need to discharge in time, by arranging a condensation-water drain, the heat-insulation layer of cylindrical shell lower end is made skewed, condensation-water drain is pooled to facilitate condensed water, valve in condensation-water drain is initially closed condition, in case high-temperature steam leaks, and condensed water can flow in condensation-water drain and collect above valve, when the condensed water above valve increases to constant weight, condensed water can be external to holding valve expelling tube, after the condensed water that collects reduces, its shortage in weight is with to opening valve, valve can rebound again closed automatically, realize sealing in time, reach dual-purpose function.
Further, described cylinder cylinder acid and alkali-resistance stainless steel is made, and described acid and alkali-resistance stainless components based on weight percentage calculation (following % all represents percentage by weight) is: carbon is 0.13% ~ 0.17%, nickel is 4% ~ 7%, chromium is 9% ~ 15%, and manganese is 9% ~ 11%, and niobium is 0.58% ~ 0.77%, vanadium is 0.13% ~ 0.32%, molybdenum is 1.3% ~ 1.8%, and titanium is 3% ~ 4%, and rare earth is 0.23% ~ 0.53%, the total amount of p and s is no more than 0.035%, and surplus is iron and inevitable impurity thereof.
Further, the stainless preparation technology of described acid and alkali-resistance comprises following step:
Step 1, use medium-frequency induction furnace melting, metal charge addition sequence is the pig iron, steel scrap, molybdenum-iron, ferronickel, ferromanganese, ferrochrome, when smelting temperature reaches 1610 DEG C, carry out deoxidation, and then add deoxidier and carry out secondary deoxidation, add molybdenum-iron, vanadium iron, ferrotianium and ferro-niobium afterwards, at the end of melting is fast, add rare earth, make the alloying component in steel reach pre-provisioning request, then finely tune the chemical composition in molten steel, moulding by casting, then cylinder cylinder surfaces dregs are cleared up, removing rising head;
Step 2, the casting flaw using the method removing cylinder cylinder surfaces of machining and oxide skin, surface finish is smooth;
Step 3, the cylinder cylinder obtained in step 2 is carried out solution treatment, put into heat-treatment furnace by cylinder cylinder and be heated to 1060 DEG C, heating rate is 100 DEG C/h, insulation 6h, and then shrend is to room temperature;
Step 4, the cylinder cylinder after solution treatment is heated to 870 DEG C, heating rate is 90 DEG C/h, and insulation 5h, then sky is cooled to room temperature.
The acid and alkali-resistance stainless steel obtained by above-mentioned preparation technology, not only has the stainless advantage of single phase austenite type, and also have excellent corrosion resistance, principle is: the properties first improving steel on formula by changing ratio of component and increase component; In alloying element, chromium determines the corrosion proof essential element of stainless steel, chromium forms solid solution in iron, the electrode potential of solid solution is the change of sudden change formula with the increase of chromium content, then in great-jump-forward, ground significantly weakens in corrosion, and therefore chrome content is no more than 19%, simultaneously chromium can be formed on the surface of steel and oxygen one deck densification, stable, complete and can with the chromium oxide passivation film of collective's strong bonded of iron, effectively can prevent the corrosion of steel, the non-oxidizability of steel is significantly strengthened; Vanadium, titanium and niobium trace element can form stable carbide in steel, effectively can avoid on crystal boundary, be settled out chromium carbide and cause stainless intercrystalline corrosion; In order to improve stainless acid-proof alkaline, in steel, added nickel and the molybdenum of a great deal of, nickel can significantly improve the electrode potential of stainless steel base, and corrosion resistance significantly strengthens, resistance to acids and bases improves, but nickel resources is more rare, expensive, should not too much add, nickel content is in 8 ~ 11% best results, molybdenum can form stable passivating film in steel, improves the performance of steel acid and alkali-resistance, improves the ability of steel anti intercrystalline corrosion.These alloying elements, except improving the corrosion resistance of steel, can also improve the mechanical performances such as the intensity of steel, hardness and wearability, make magnetic separator more durable.In preparation technology, cylinder cylinder, after solution treatment, ensures that cylinder cylinder has single phase austenite type, make it not there is magnetic, also can not be magnetized, after solution treatment, also remain a large amount of residual stress in cylinder cylinder, therefore need to carry out stabilization processes, eliminate the residual stress in cylinder cylinder.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, arrange at the inwall of cylinder cylinder the sliding wearing layer of increasing that one deck teflon coating is sprayed into, solve the problem that scraper plate and cylinder cylinder rub, the tank of setting significantly can improve heat exchange efficiency.
2, solve in heat transfer process, the problem that the condensed water produced in enclosed cavity is discharged, decrease the loss of heat, reduce the impact of condensed water on drying machine, further increase heat exchange efficiency.
3, cylinder cylinder adopts novel acid and alkali-resistance stainless steel, enhances the ability of a cylinder acid and alkali-resistance and anti intercrystalline corrosion, makes a cylinder more durable in use.
Accompanying drawing explanation
Fig. 1 is a kind of scraper plate mixer structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of part A in Fig. 1.
Fig. 3 is the partial enlarged drawing of part B in Fig. 1.
Mark in figure: 1 is cylinder cylinder, and 2 is cover, and 3 is charging aperture, and 4 is air extractor, and 5 is agitating device, 6 for increasing sliding wearing layer, and 7 is U-lag, and 8 is cylindrical shell, 9 discharging openings, 10 heat-insulation layers, and 11 is heat-insulating shield, and 12 is assembling groove, and 13 is condensed water groove, and 14 is valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make the object of invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment one
As shown in Figure 1, a kind of acidproof alkaline stirring drier, comprise the cover 2 being located at a cylinder 1 upper end, be located at the charging aperture 3 at the upper side of cover 2, be located at the air extractor 4 of opposite side above cover 2, be located at the agitating device 5 in the middle of above cover 2, the inwall of described cylinder cylinder 1 is provided with one deck and increases sliding wearing layer 6, cylinder cylinder 1 outer wall is dug some U-lags 7, described cylinder 1 cylinder outside is provided with cylindrical shell 8, cylinder cylinder 1 lower end is provided with a discharging opening 9, and be also provided with heat-insulation layer 10 between described cylindrical shell 8 and described cylinder cylinder 1, described heat-insulation layer 10 surface is provided with vertical groove, the thickness of described cylinder cylinder 1 is 1-5mm(optimum thickness is 3mm, 1mm or 5mm can certainly be selected), the degree of depth of the U-lag 7 of cylinder cylinder 1 outer wall is 0.5-1mm(optimum depth is 0.8mm, according to the thickness size of cylinder cylinder 1, also 0.5mm or 1mm can be selected), width is that (optimum depth is 2mm to 1-3mm, according to the thickness size of cylinder cylinder 1, also 1mm or 3mm can be selected), and every bar U-lag 7 equi-spaced apart is wrapped on a cylinder 1, the described thickness increasing sliding wearing layer 6 is 50-300 μm, and (optimum thickness is 250 μm, according to the thickness size of cylinder cylinder 1, also 50 μm or 300 μm can be selected), employing teflon coating is made, described teflon coating is coated on described cylinder cylinder 1 inwall equably.
In the present embodiment, the thickness of described heat-insulation layer 10 is 5-20mm(optimum thickness is 10mm, 5mm or 20mm can certainly be selected), described heat-insulation layer 10 is provided with heat-insulating shield 11 near discharge outlet, the bottom of heat-insulation layer 10 seals by described heat-insulating shield 11 completely, be fixedly mounted between described cylinder cylinder 1 and described cylindrical shell 8, and thickness is 5-10mm(optimum thickness is 7mm, can certainly 5mm or 10mm be selected); The lower surface of described cylinder cylinder 1 is provided with a circle assembling groove 12, matches with described assembling groove 12 in the top of described heat-insulating shield 11, heat-insulating shield 11 coordinate with cylinder cylinder 1 install after need to seal with casting glue to assemble gap; The end of described cylindrical shell 8 near discharging opening 9 place and the lower surface of described heat-insulating shield 11 are concealed, the bridging type or bayonet joint that mutually mate, the end of cylindrical shell 8 near discharging opening 9 place and heat-insulating shield 11 need to assemble gap with welded seal after installing, the side of the middle and upper part of described cylindrical shell 8 is provided with a steam (vapor) outlet 16, and cylindrical shell 8 lower end is provided with a steam inlet 15 away from the side of described steam (vapor) outlet 16.
In the present embodiment, the heat-insulation layer 10 of described cylindrical shell 8 lower end is a hypotenuse, lower one end place of the one side that described heat-insulation layer 10 tilts is provided with a condensation-water drain 13, namely condensation-water drain 13 is provided with at the offside of described steam inlet same level, described condensation-water drain 13 is located at the lower end of described cylindrical shell 8, and through heat-insulation layer 10, a valve 14 is provided with in condensation-water drain 13, described valve 14 is two half moon thin slices be separated, toward each other, root is connected with described condensation-water drain 13 inwall, its free edge is towards the outer wall of described cylindrical shell 8 lower end, original state is closed form, valve 14 material therefor is high resiliency silica gel.
After passing into high-temperature steam, first steam can flow along U-lag 7, increase heat exchange area, when high-temperature steam condenses water droplet, these water droplets can stay a cylinder 1 outer wall and heat-insulation layer 10 on the surface, condensed water on cylinder cylinder 1 can drop onto on the heat-insulation layer 10 of lower end, the heat-insulation layer 10 of both sides also can flow on the heat-insulation layer 10 of lower end along groove, because the heat-insulation layer 10 of cylindrical shell 8 lower end is skewed, condensed water can be pooled to condensation-water drain 13 place along gradient, and collect above valve 14, when the condensed water above valve 14 increases to constant weight, condensed water can be discharged outside cylindrical shell 8 to holding valve 14, after the condensed water that collects reduces, its shortage in weight is with to opening valve 14, valve 14 can rebound again closed automatically, realize sealing in time, reach dual-purpose function.The high resiliency silica gel that valve 14 adopts is sensitive to pressure sensitive, can realize above-mentioned purpose well.
In the present embodiment, described cylinder cylinder acid and alkali-resistance stainless steel is made, and described acid and alkali-resistance stainless components based on weight percentage calculation (following % all represents percentage by weight) is: carbon is 0.13%, nickel is 4%, and chromium is 15%, and manganese is 9%, niobium is 0.77%, vanadium is 0.13%, and molybdenum is 1.3%%, and titanium is 3%, rare earth is 0.23%, the total amount of p and s is no more than 0.035%, and surplus is iron and inevitable impurity thereof, and the stainless preparation technology of described acid and alkali-resistance comprises following step:
Step 1, use medium-frequency induction furnace melting, metal charge addition sequence is the pig iron, steel scrap, molybdenum-iron, ferronickel, ferromanganese, ferrochrome, when smelting temperature reaches 1610 DEG C, carry out deoxidation, and then add deoxidier and carry out secondary deoxidation, add molybdenum-iron, vanadium iron, ferrotianium and ferro-niobium afterwards, at the end of melting is fast, add rare earth, make the alloying component in steel reach pre-provisioning request, then finely tune the chemical composition in molten steel, moulding by casting, then the surperficial dregs of cylinder cylinder 1 are cleared up, removing rising head;
Step 2, the casting flaw using method removing cylinder cylinder 1 surface of machining and oxide skin, surface finish is smooth;
Step 3, the cylinder cylinder 1 obtained in step 2 is carried out solution treatment, put into heat-treatment furnace by cylinder cylinder 1 and be heated to 1060 DEG C, heating rate is 100 DEG C/h, insulation 6h, and then shrend is to room temperature;
Step 4, the cylinder cylinder 1 after solution treatment is heated to 870 DEG C, heating rate is 90 DEG C/h, and insulation 5h, then sky is cooled to room temperature.
embodiment two
This embodiment is identical with embodiment one, and difference is, described acid and alkali-resistance stainless components based on weight percentage calculation (following % all represents percentage by weight) is: carbon is 0.17%, nickel is 7%, and chromium is 9%, and manganese is 11%, niobium is 0.58%%, vanadium is 0.32%, and molybdenum is 1.8%, and titanium is 4%, rare earth is 0.53%, the total amount of p and s is no more than 0.035%, and surplus is iron and inevitable impurity thereof, and the stainless preparation technology of described acid and alkali-resistance comprises following step:
Step 1, use medium-frequency induction furnace melting, metal charge addition sequence is the pig iron, steel scrap, molybdenum-iron, ferronickel, ferromanganese, ferrochrome, when smelting temperature reaches 1610 DEG C, carry out deoxidation, and then add deoxidier and carry out secondary deoxidation, add molybdenum-iron, vanadium iron, ferrotianium and ferro-niobium afterwards, at the end of melting is fast, add rare earth, make the alloying component in steel reach pre-provisioning request, then finely tune the chemical composition in molten steel, moulding by casting, then the surperficial dregs of cylinder cylinder 1 are cleared up, removing rising head;
Step 2, the casting flaw using method removing cylinder cylinder 1 surface of machining and oxide skin, surface finish is smooth;
Step 3, the cylinder cylinder 1 obtained in step 2 is carried out solution treatment, put into heat-treatment furnace by cylinder cylinder and be heated to 1060 DEG C, heating rate is 100 DEG C/h, insulation 6h, and then shrend is to room temperature;
Step 4, the cylinder cylinder 1 after solution treatment is heated to 870 DEG C, heating rate is 90 DEG C/h, and insulation 5h, then sky is cooled to room temperature.
embodiment three
This embodiment is identical with embodiment two with embodiment one, and difference is, described acid and alkali-resistance stainless components based on weight percentage calculation (following % all represents percentage by weight) is: carbon is 0.14%, nickel is 5%, and chromium is 10%, and manganese is 9.5%, niobium is 0.65%, vanadium is 0.27%, and molybdenum is 1.5%, and titanium is 3.7%, rare earth is 0.46%, the total amount of p and s is no more than 0.035%, and surplus is iron and inevitable impurity thereof, and the stainless preparation technology of described acid and alkali-resistance comprises following step:
Step 1, use medium-frequency induction furnace melting, metal charge addition sequence is the pig iron, steel scrap, molybdenum-iron, ferronickel, ferromanganese, ferrochrome, when smelting temperature reaches 1610 DEG C, carry out deoxidation, and then add deoxidier and carry out secondary deoxidation, add molybdenum-iron, vanadium iron, ferrotianium and ferro-niobium afterwards, at the end of melting is fast, add rare earth, make the alloying component in steel reach pre-provisioning request, then finely tune the chemical composition in molten steel, moulding by casting, then the surperficial dregs of cylinder cylinder 1 are cleared up, removing rising head;
Step 2, the casting flaw using method removing cylinder cylinder 1 surface of machining and oxide skin, surface finish is smooth;
Step 3, the cylinder cylinder 1 obtained in step 2 is carried out solution treatment, put into heat-treatment furnace by cylinder cylinder 1 and be heated to 1060 DEG C, heating rate is 100 DEG C/h, insulation 6h, and then shrend is to room temperature;
Step 4, the cylinder cylinder 1 after solution treatment is heated to 870 DEG C, heating rate is 90 DEG C/h, and insulation 5h, then sky is cooled to room temperature.
embodiment four
This embodiment and embodiment one, embodiment two are identical with embodiment three, difference is, described acid and alkali-resistance stainless components based on weight percentage calculation (following % all represents percentage by weight) is: carbon is 0.15%, nickel is 5.7%, chromium is 11.5%, manganese is 10%, niobium is 0.77%, vanadium is 0.27%, and molybdenum is 1.8%, and titanium is 4%, rare earth is 0.53%, the total amount of p and s is no more than 0.035%, and surplus is iron and inevitable impurity thereof, and the stainless preparation technology of described acid and alkali-resistance comprises following step:
Step 1, use medium-frequency induction furnace melting, metal charge addition sequence is the pig iron, steel scrap, molybdenum-iron, ferronickel, ferromanganese, ferrochrome, when smelting temperature reaches 1610 DEG C, carry out deoxidation, and then add deoxidier and carry out secondary deoxidation, add molybdenum-iron, vanadium iron, ferrotianium and ferro-niobium afterwards, at the end of melting is fast, add rare earth, make the alloying component in steel reach pre-provisioning request, then finely tune the chemical composition in molten steel, moulding by casting, then the surperficial dregs of cylinder cylinder 1 are cleared up, removing rising head;
Step 2, the casting flaw using method removing cylinder cylinder 1 surface of machining and oxide skin, surface finish is smooth;
Step 3, the cylinder cylinder 1 obtained in step 2 is carried out solution treatment, put into heat-treatment furnace by cylinder cylinder 1 and be heated to 1060 DEG C, heating rate is 100 DEG C/h, insulation 6h, and then shrend is to room temperature;
Step 4, the cylinder cylinder 1 after solution treatment is heated to 870 DEG C, heating rate is 90 DEG C/h, and insulation 5h, then sky is cooled to room temperature.
The room-temperature mechanical property of the cylinder cylinder 1 obtained by above-mentioned technique is as shown in the table:
Can be drawn by upper table, cylinder cylinder 1 excellent in mechanical performance of the present invention, its hardness can reach 57.3HRC, yield strength can reach 675MPa, also has outstanding corrosion resistance simultaneously, and its anti-spot corrosion equivalent can reach 27.6, a cylinder 1 is not easily corroded, extends service life.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an acidproof alkaline stirring drier, comprise the cover (2) being located at a cylinder (1) upper end, be located at the charging aperture (3) of cover (2) upper side, be located at the air extractor (4) of cover (2) top opposite side, be located at the agitating device (5) in the middle of cover (2) top, it is characterized in that, the inwall of described cylinder cylinder (1) is provided with one deck and increases sliding wearing layer (6), cylinder cylinder (1) outer wall is dug some U-lags (7), described cylinder cylinder (1) outside is provided with cylindrical shell (8), cylinder cylinder (1) lower end is provided with a discharging opening (9), heat-insulation layer (10) is also provided with between described cylindrical shell (8) and described cylinder cylinder (1), described heat-insulation layer (10) surface is provided with vertical groove.
2. acidproof alkaline stirring drier as claimed in claim 1, it is characterized in that, the thickness of described cylinder cylinder (1) is 1-5mm, the degree of depth of the U-lag (7) of cylinder cylinder (1) outer wall is 0.5-1mm, width is 1-3mm, and every bar U-lag (7) equi-spaced apart is wrapped on a cylinder, and the described thickness increasing sliding wearing layer (6) is 50-300 μm, employing teflon coating is made, and described teflon coating is coated on described cylinder cylinder (1) inwall equably.
3. acidproof alkaline stirring drier as claimed in claim 2, it is characterized in that, the thickness of described heat-insulation layer (10) is 5-20mm, described heat-insulation layer (10) is provided with heat-insulating shield (11) near discharging opening (9) place, the bottom of heat-insulation layer (10) seals by described heat-insulating shield (11) completely, be fixedly mounted between described cylinder cylinder (1) and described cylindrical shell (8), and thickness is 5-10mm.
4. acidproof alkaline stirring drier as claimed in claim 3, it is characterized in that, the lower surface of described cylinder cylinder (1) is provided with a circle assembling groove (12), match with described assembling groove (12) in the top of described heat-insulating shield (11), heat-insulating shield (11) coordinate with cylinder cylinder (1) install after need to seal with casting glue to assemble gap, the side of the middle and upper part of described cylindrical shell (8) is provided with a steam (vapor) outlet (16), and cylindrical shell (8) lower end is provided with a steam inlet (15) away from the side of described steam (vapor) outlet (16).
5. acidproof alkaline stirring drier as claimed in claim 4, it is characterized in that, described cylindrical shell (8) is concealed, the bridging type or bayonet joint that mutually mate near end and the lower surface of described heat-insulating shield (11) at discharging opening (9) place, and the end at close discharging opening (9) place of cylindrical shell (8) and heat-insulating shield (11) need to assemble gap with welded seal after installing.
6. the acidproof alkaline stirring drier as described in one of claim 1-5, it is characterized in that, the heat-insulation layer (10) of described cylindrical shell (8) lower end is a hypotenuse, lower one end place of the one side that described heat-insulation layer (10) tilts is provided with a condensation-water drain (13), namely condensation-water drain (13) is provided with at the offside of described steam inlet (15) same level, described condensation-water drain (13) is located at the lower end of described cylindrical shell (8), and through heat-insulation layer (10), a valve (14) is provided with in condensation-water drain (13), described valve (14) is two half moon thin slices be separated, toward each other, root is connected with described condensation-water drain (13) inwall, its free edge is towards the outer wall of described cylindrical shell (8) lower end, original state is closed form, valve material therefor is high resiliency silica gel.
7. acidproof alkaline stirring drier as claimed in claim 6, it is characterized in that, described cylinder cylinder (1) is made with acid and alkali-resistance stainless steel, described acid and alkali-resistance stainless components based on weight percentage calculation (following % all represents percentage by weight) is: carbon is 0.13% ~ 0.17%, nickel is 4% ~ 7%, chromium is 9% ~ 15%, manganese is 9% ~ 11%, niobium is 0.58% ~ 0.77%, and vanadium is 0.13% ~ 0.32%, and molybdenum is 1.3% ~ 1.8%, titanium is 3% ~ 4%, rare earth is 0.23% ~ 0.53%, and the total amount of p and s is no more than 0.035%, and surplus is iron and inevitable impurity thereof.
8. acidproof alkaline stirring drier as claimed in claim 7, is characterized in that, the stainless preparation technology of described acid and alkali-resistance comprises following step:
Step 1, use medium-frequency induction furnace melting, metal charge addition sequence is the pig iron, steel scrap, molybdenum-iron, ferronickel, ferromanganese, ferrochrome, when smelting temperature reaches 1610 DEG C, carry out deoxidation, and then add deoxidier and carry out secondary deoxidation, add molybdenum-iron, vanadium iron, ferrotianium and ferro-niobium afterwards, at the end of melting is fast, add rare earth, make the alloying component in steel reach pre-provisioning request, then finely tune the chemical composition in molten steel, moulding by casting, then cylinder cylinder (1) surperficial dregs are cleared up, removing rising head;
Step 2, the casting flaw using method removing cylinder cylinder (1) surface of machining and oxide skin, surface finish is smooth;
Step 3, the cylinder cylinder (1) obtained in step 2 is carried out solution treatment, put into heat-treatment furnace by cylinder cylinder (1) and be heated to 1060 DEG C, heating rate is 100 DEG C/h, insulation 6h, and then shrend is to room temperature;
Step 4, the cylinder cylinder (1) after solution treatment is heated to 870 DEG C, heating rate is 90 DEG C/h, and insulation 5h, then sky is cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510839633.6A CN105352295B (en) | 2015-11-27 | 2015-11-27 | A kind of acidproof alkaline stirring drier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108826900A (en) * | 2018-08-08 | 2018-11-16 | 耒阳市润兆达农业科技发展有限公司 | A kind of foliar fertilizer stirring and drying device |
| CN110131971A (en) * | 2019-06-04 | 2019-08-16 | 上海稳奇电脑有限公司 | A kind of drying system that can detect humidity |
| CN110966845A (en) * | 2019-11-22 | 2020-04-07 | 丁亮 | Roller scraper dryer |
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| CN105352295B (en) | 2017-10-27 |
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Effective date of registration: 20181025 Address after: 610213 South section of Tianfu Avenue, Tianfu New District, Chengdu City, Sichuan Province 2039 and 1609, 16th floor, Meihai Tang Center (Tianfu Chuangke) Patentee after: Sichuan know Technology Co., Ltd. Address before: 610000 Wuhou District Wuhou new town administrative committee, Chengdu, Sichuan, 2 Wuyi East Road 15, 1 units, 2 level 231. Patentee before: CHENGDU JIUSHIDU INDUSTRIAL PRODUCT DESIGN CO., LTD. |