CN204141961U - Ceramic paste preforms primary drying device - Google Patents
Ceramic paste preforms primary drying device Download PDFInfo
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- CN204141961U CN204141961U CN201420536253.6U CN201420536253U CN204141961U CN 204141961 U CN204141961 U CN 204141961U CN 201420536253 U CN201420536253 U CN 201420536253U CN 204141961 U CN204141961 U CN 204141961U
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- 238000001035 drying Methods 0.000 title claims abstract description 72
- 239000000919 ceramic Substances 0.000 title claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 239000004927 clay Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007603 infrared drying Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses ceramic paste preforms primary drying device, it comprises the mud bar machine for moulded pottery not yet put in a kiln to bake being cut into laminated structure, for the moulded pottery not yet put in a kiln to bake of laminated structure being delivered to the feeding area in roll extrusion district, for the moulded pottery not yet put in a kiln to bake of laminated structure being rolled into the roller press of base substrate, and for described base substrate being carried out the hothouse of primary drying, described roller press is installed on roll extrusion district, described ceramic paste preforms primary drying device comprises a heating using microwave chamber further, described heating using microwave chamber is arranged between clay shredder and feeding area, for heating to improve its plasticity to the moulded pottery not yet put in a kiln to bake of laminated structure.The utility model to improve its clay sculpture, thus realizes the object that not only reduced moulded pottery not yet put in a kiln to bake moisture content but also can meet roll extrusion requirement by heating moulded pottery not yet put in a kiln to bake.
Description
Technical field
The utility model relates to ceramic production device technical field, is specifically related to the primary drying device of base substrate in a kind of ceramic automatic moulding production line.
Background technology
At present, ceramic production line generally adopts roll forming techniques.Roll forming utilizes milled head and model separately around fixed-axis rotation, and being extended by the moulding pug thrown in model is pressed into base substrate, and " cavity " that the profile of base substrate and size depend on method for rolling and molding completely and formed between milled head and die face.Roll forming is divided into male mould forming and female mould forming, respectively as shown in 1 and Fig. 2.
In the whole production process of pottery, drying can be divided into primary drying, redrying and three dryings.Primary drying refers to leather-hard drying, i.e. the drying of moulded pottery not yet put in a kiln to bake after roll forming, and after primary drying, the intensity of base substrate will reach the requirement of the demoulding.Primary drying has a variety of drying mode, such as microwave drying, infra-red drying and natural drying etc.
Existing ceramic body primary drying device as shown in Figure 3, first ceramic paste preforms is cut into laminated structure by mud bar machine, then enters roll extrusion district by the feeding port of feeding area, after the roller press roll forming in roll extrusion district, enter tunnel drier, and then to the demoulding of demoulding district.The moisture content of roll forming to moulded pottery not yet put in a kiln to bake has requirement.Moisture content is too low, and moulded pottery not yet put in a kiln to bake plasticity is not enough, then difficult forming; Moisture content is too high, and moulded pottery not yet put in a kiln to bake is soft, is conducive to shaping, but is unfavorable for follow-up drying.The moisture content of moulded pottery not yet put in a kiln to bake now used is 23.5%, meets roll forming requirement, but has its own shortcomings:
The moisture content of the base substrate after 1, shaping needs to drop to less than 18% just can the demoulding, so follow-up drying process needs the moisture removing base substrate about more than 6%, this requires very high to drying process, and needs the at substantial energy;
2, the initial aqueous rate of moulded pottery not yet put in a kiln to bake is too high, and the base substrate after shaping is yielding in dry run, even breaks, and reduces quality and the qualification rate of product.
Utility model content
For above deficiency, the purpose of this utility model is to provide a kind of ceramic paste preforms primary drying device, and it heats to improve its plasticity to moulded pottery not yet put in a kiln to bake by arranging heating using microwave chamber, can improve the quality of products and qualification rate when lowering moulded pottery not yet put in a kiln to bake moisture content.
For realizing above object, the technical scheme that the utility model is taked is:
Ceramic paste preforms primary drying device, it comprises mud bar machine for moulded pottery not yet put in a kiln to bake being cut into laminated structure, be used for the moulded pottery not yet put in a kiln to bake of laminated structure deliver to roll extrusion district feeding area, be used for the moulded pottery not yet put in a kiln to bake of laminated structure being rolled into the roller press of base substrate and being used for described base substrate to carry out the hothouse of primary drying, described roller press is installed on roll extrusion district, described ceramic paste preforms primary drying device comprises a heating using microwave chamber further, described heating using microwave chamber is arranged between clay shredder and feeding area, for heating to improve its plasticity to the moulded pottery not yet put in a kiln to bake of laminated structure.
Described ceramic paste preforms primary drying device comprises the demoulding district for the base substrate after the primary drying of drying room being carried out the demoulding further; and the stripping manipulator for the base substrate after the demoulding is taken out; described demoulding district is provided with demoulding mould; described demoulding mould carries out drying by mould dry section after carrying out demoulding process to base substrate.
To the drying of base substrate and mould dry section, the drying to demoulding mould is all realized by using residual heat from kiln furnace described hothouse, described hothouse is provided with the first air inlet and air outlet, described mould dry section is provided with the second air inlet, described second air inlet and using residual heat from kiln furnace pipeline communication, described first air inlet is all communicated with described using residual heat from kiln furnace pipeline and environment cold air duct by intake stack, and described air outlet is connected with a dehumidifier exhaust blower by wind pipe.
Described using residual heat from kiln furnace pipeline, environment cold air duct and wind pipe are respectively arranged with a control valve.
Humidity sensor and temperature sensor is provided with on described intake stack and in hothouse.
Described using residual heat from kiln furnace delivers to using residual heat from kiln furnace pipeline by a pressure fan.
Described wind pipe arranges an air volume meter further.
Described hothouse is by installing microwave generator or infrared emittance carries out drying to base substrate in it.
The moisture content of moulded pottery not yet put in a kiln to bake reduces, then plasticity reduces, if but the temperature of moulded pottery not yet put in a kiln to bake is raised, then plasticity improves, if so the temperature of moulded pottery not yet put in a kiln to bake improve roll extrusion while reducing moulded pottery not yet put in a kiln to bake moisture content before, just reach the object not only reducing moulded pottery not yet put in a kiln to bake moisture content but also roll extrusion requirement can be met.Therefore, the utility model compared with prior art, its beneficial effect is: original production line can only shaping moisture content be the moulded pottery not yet put in a kiln to bake of more than 23.5%, at substantial energy is needed to evaporate the moisture of about 6% and the poor quality of product, and the production line adding heating using microwave can the moulded pottery not yet put in a kiln to bake of shaping moisture content 20%, then the water yield of follow-up drying needs evaporation is only original about 1/3rd, has saved large energy.Meanwhile, moulded pottery not yet put in a kiln to bake is out of shape and reduces in dry run, and product quality is improved, qualification rate also from before 75% brought up to more than 95%.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the roller press of existing male mould forming (outer shaping);
Fig. 2 is the schematic diagram of the roller press of existing female mould forming (interior shaping);
Fig. 3 is the structural representation of existing ceramic paste preforms primary drying device;
Fig. 4 is the structural representation of the utility model ceramic paste preforms primary drying device;
Fig. 5 is the drying principles figure of hothouse in Fig. 4.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.
Embodiment
Please refer to shown in Fig. 4 and Fig. 5, ceramic paste preforms primary drying device, it comprises the mud bar machine for moulded pottery not yet put in a kiln to bake being cut into laminated structure, for the moulded pottery not yet put in a kiln to bake of laminated structure being delivered to the feeding area in roll extrusion district, for the moulded pottery not yet put in a kiln to bake of laminated structure being rolled into the roller press (being arranged at roll extrusion district) of base substrate, and for base substrate being carried out the hothouse of primary drying, for the base substrate after the primary drying of drying room being carried out the demoulding district of the demoulding, and the stripping manipulator for the base substrate after the demoulding is taken out, demoulding district is provided with demoulding mould, after demoulding mould carries out demoulding process to base substrate, drying is carried out by mould dry section.The equipment that above-mentioned each technique adopts and method are prior art structure, repeat no more here.In order to while reduction moulded pottery not yet put in a kiln to bake moisture content, its plasticity can be provided again (to refer under external force, stably can there is permanent deformation and not destroy the ability of its integrality in material), in the utility model preferred embodiment, undertaken by the mode heated moulded pottery not yet put in a kiln to bake, specifically heating using microwave chamber is set between clay shredder and feeding area, is processed into after laminated structure through clay shredder, heat to improve its plasticity by the moulded pottery not yet put in a kiln to bake of heating using microwave chamber to laminated structure.
Hothouse is all undertaken by any one in microwave drying, infra-red drying and natural drying the drying of demoulding mould the drying of base substrate and mould dry section.Certainly, also can adopt mentioned by the utility model and be realized by using residual heat from kiln furnace, to reach the object of exhaust gas utilization.Hothouse is provided with the first air inlet and air outlet, mould dry section is provided with the second air inlet, second air inlet and using residual heat from kiln furnace pipeline communication, first air inlet is all communicated with using residual heat from kiln furnace pipeline and environment cold air duct by intake stack, air outlet is connected with a dehumidifier exhaust blower by wind pipe, and using residual heat from kiln furnace delivers to using residual heat from kiln furnace pipeline by a pressure fan.Using residual heat from kiln furnace pipeline, environment cold air duct and wind pipe are respectively arranged with a control valve, wind pipe also installs an air volume meter.Be provided with humidity sensor and temperature sensor on intake stack and in hothouse, wherein, the humidity sensor in hothouse and temperature sensor arrange many groups in pairs, and the moving direction along base substrate distributes.
The principle of hothouse drying and the design of each parameter as follows:
The object of ceramic body primary drying removes the small part Free water in ceramic body, will terminate through heating and two stages of constant speed.
Heating period: the heat that hot-air passes to base substrate is greater than the heat that moisture evaporates absorption, and unnecessary heat makes base substrate temperature raise, and evaporation capacity also continues to increase simultaneously.
The constant speed stage: be exactly the heat that the hot-air heat that passes to base substrate equals that moisture evaporation absorbs, base substrate temperature no longer changes.
If pottery outer surface rate of drying in dry run is too fast, then the inside and outside contraction of pottery can be caused uneven, and produce internal stress, when internal stress is excessive, when exceeding the intensity of base substrate, base substrate will ftracture.For avoiding cracking, pottery is dry very little in the moist gradient of heating period, can not be too large in the moist gradient in constant speed stage.
After hot blast (from using residual heat from kiln furnace) mixes with environment cold wind, near demoulding district, enter hothouse tunnel, then extracted out by the dehumidifier exhaust blower of the other end.Base substrate and hot-air are counter-flow relation.The steam that hot-air near exhaust blower is evaporated owing to fully absorbing base substrate above, relative humidity is very high, reduces the moist gradient of body drying heating period.
From the hot gas that kiln transports out, be mixed into room air and there is fixed temperature T
enterhot-air, be then transfused to drying system.The hot blast rate of input is most important for the quality of drying, and air quantity is very few, then dry not in place, and the intensity of base substrate does not reach the requirement of the demoulding, and air quantity is excessive, then cause the waste of the energy.Be necessary to set up relevant physical model, for the automatic control of intake provides theoretical foundation.
The water yield of evaporating from base substrate per hour, shown in (1).
Q＝60nm(H
1-H
2) (1)
In formula, Q is the evaporated water of unit hour all base substrates, kg; N is the base substrate number of production line processing per minute; M is the quality of single base substrate, kg; H
1for the moisture content before body drying; H
2for the moisture content after body drying; The quantity of automatic assembly line production per hour is fixing substantially, and the moisture content of base substrate is fixed as 20%, can think that Q is fixing.
According to the conservation of energy, the heat that moisture evaporation absorbs equals the heat that hot-air discharges, shown in (2)
QL=CM (T
enter-T
go out) (2)
In formula, L is the heat of vaporization of water, is the function of temperature, kJ/kg; C is the specific heat capacity of air, kJ/ (kg*K); M is the air gross mass entered per hour, kg; T
enterfor the temperature at drying system hot wind inlet place, DEG C; T
go outthe temperature at drying system hot-blast outlet place, DEG C.
So required hot blast rate is
V in formula
heatmeet the hot blast rate of thermal requirement, m
3; ρ
emptyfor atmospheric density, kg/m
3.
For meeting humidity discharging requirement, the steam quality walked entrained by air quantity of draining per hour should be not less than the evaporated water Q of all base substrates per hour.Shown in (4).
Wherein V
rowfor meeting the hot blast rate that humidity discharging requires, m
3; ρ
b1for the saturated steam density in import department's saturated air, in Table (1), g/m
3; ρ
b2for the saturated steam density in the saturated air of exit, in Table (1), g/m
3;
for the relative humidity of import department's air;
for the relative humidity of exit air.
So
Table 1 saturated moist air table
The most high dry temperature of pottery higher than 70 DEG C, and can not be greater than 70 DEG C from the hot-air that stove transports, so need to mix with it by ambient, cool air, makes its temperature drop to required temperature T
enter.According to the conservation of energy, the heat that hot-air discharges equals the heat that cold air absorbs, shown in (6).
CM
1(T
1-T
enter)=CM
2(T
enter-T
2) (6)
In formula: C is the specific heat capacity of air, kJ/ (kg.K); M
1for the quality of hot-air, kg; T
1for the temperature of hot-air, DEG C; M
2for the quality of room air, kg; T
2for the temperature of room air, DEG C.
Can obtain, the mass ratio of hot cold air is
Being converted into volume ratio is
Wherein: V
1for the volume of hot-air, m
3; V
2for the volume of ambient, cool air, m
3; ρ
1for the density of hot-air, kg/m
3ρ
2for the density of ambient, cool air, kg/m
3.
Above-listed detailed description is illustrating for the utility model possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the scope of the claims of this case.
Claims (8)
1. ceramic paste preforms primary drying device, it comprises the mud bar machine for moulded pottery not yet put in a kiln to bake being cut into laminated structure, for the moulded pottery not yet put in a kiln to bake of laminated structure being delivered to the feeding area in roll extrusion district, for the moulded pottery not yet put in a kiln to bake of laminated structure being rolled into the roller press of base substrate, and for described base substrate being carried out the hothouse of primary drying, described roller press is installed on roll extrusion district, it is characterized in that, described ceramic paste preforms primary drying device comprises a heating using microwave chamber further, described heating using microwave chamber is arranged between clay shredder and feeding area, for heating to improve its plasticity to the moulded pottery not yet put in a kiln to bake of laminated structure.
2. ceramic paste preforms primary drying device according to claim 1; it is characterized in that; described ceramic paste preforms primary drying device comprises the demoulding district for the base substrate after the primary drying of drying room being carried out the demoulding further; and the stripping manipulator for the base substrate after the demoulding is taken out; described demoulding district is provided with demoulding mould; described demoulding mould carries out drying by mould dry section after carrying out demoulding process to base substrate.
3. ceramic paste preforms primary drying device according to claim 2, it is characterized in that, to the drying of base substrate and mould dry section, the drying to demoulding mould is all realized by using residual heat from kiln furnace described hothouse, described hothouse is provided with the first air inlet and air outlet, described mould dry section is provided with the second air inlet, described second air inlet and using residual heat from kiln furnace pipeline communication, described first air inlet is all communicated with described using residual heat from kiln furnace pipeline and environment cold air duct by intake stack, and described air outlet is connected with a dehumidifier exhaust blower by wind pipe.
4. ceramic paste preforms primary drying device according to claim 3, is characterized in that, described using residual heat from kiln furnace pipeline, environment cold air duct and wind pipe are respectively arranged with a control valve.
5. ceramic paste preforms primary drying device according to claim 3, is characterized in that, be provided with humidity sensor and temperature sensor on described intake stack and in hothouse.
6. ceramic paste preforms primary drying device according to claim 3, it is characterized in that, described using residual heat from kiln furnace delivers to using residual heat from kiln furnace pipeline by a pressure fan.
7. ceramic paste preforms primary drying device according to claim 3, is characterized in that, described wind pipe arranges an air volume meter further.
8. ceramic paste preforms primary drying device according to claim 1, is characterized in that, described hothouse is by installing microwave generator or infrared emittance carries out drying to base substrate in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536253.6U CN204141961U (en) | 2014-09-17 | 2014-09-17 | Ceramic paste preforms primary drying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536253.6U CN204141961U (en) | 2014-09-17 | 2014-09-17 | Ceramic paste preforms primary drying device |
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| Publication Number | Publication Date |
|---|---|
| CN204141961U true CN204141961U (en) | 2015-02-04 |
Family
ID=52418642
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420536253.6U Active CN204141961U (en) | 2014-09-17 | 2014-09-17 | Ceramic paste preforms primary drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979682A (en) * | 2017-03-24 | 2017-07-25 | 骊住美标卫生洁具制造（上海）有限公司 | Ceramic body pre-drying method |
-
2014
- 2014-09-17 CN CN201420536253.6U patent/CN204141961U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979682A (en) * | 2017-03-24 | 2017-07-25 | 骊住美标卫生洁具制造（上海）有限公司 | Ceramic body pre-drying method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 612, Building 13, Compound 100, Xianlie Middle Road, Yuexiu District, Guangzhou City, Guangdong Province, 510070 Patentee after: Institute of intelligent manufacturing, Guangdong Academy of Sciences Address before: Room 612, Building 13, Compound 100, Xianlie Middle Road, Yuexiu District, Guangzhou City, Guangdong Province, 510070 Patentee before: GUANGDONG INSTITUTE OF INTELLIGENT MANUFACTURING |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: Room 612, Building 13, Compound 100, Xianlie Middle Road, Yuexiu District, Guangzhou City, Guangdong Province, 510070 Patentee after: GUANGDONG INSTITUTE OF INTELLIGENT MANUFACTURING Address before: 510070 13 building, 100 martyrs Road, Yuexiu District, Guangzhou, Guangdong. Patentee before: Guangdong Institute of Automation |
|
| CP03 | Change of name, title or address |