CN111391100B - Press feeding device for ceramic dry-process powder making process - Google Patents
Press feeding device for ceramic dry-process powder making process Download PDFInfo
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- CN111391100B CN111391100B CN202010204756.3A CN202010204756A CN111391100B CN 111391100 B CN111391100 B CN 111391100B CN 202010204756 A CN202010204756 A CN 202010204756A CN 111391100 B CN111391100 B CN 111391100B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/027—Feeding the moulding material in measured quantities from a container or silo by using a removable belt or conveyor transferring the moulding material to the moulding cavities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
- B28B17/0081—Process control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention discloses a press feeding device for a ceramic dry-process powder making process, which comprises a feeding unit and a press, wherein one end of the feeding unit is communicated with a dry-process powder making and granulating process, the press is communicated with the other end of the feeding unit, and a feeding bin for temporarily storing powder is arranged between the feeding unit and the press. The pressing method comprises the following steps: the press feeding device and the method thereof have the advantages that the process of ageing, storing and pressing the pressed granules for a long time (24-36 hours) in the traditional wet-process powder making process is abandoned, the granules after granulation can directly enter the press for pressing only for temporary storage (4-6 hours) in the feeding bin, the ageing link is omitted, the problems of agglomeration and pulverization caused by long-time ageing of the granules are greatly reduced, and the dry-process powder making can be widely applied to the production of ceramic tiles with various specifications.
Description
Technical Field
The invention relates to a dry powder process technology, in particular to a press feeding device for a ceramic dry powder process technology.
Background
The ceramic tile is a thin plate product which is made of clay and other inorganic non-metallic raw materials and used for covering a wall surface or a ground surface, and is generally formed by dry pressing or extrusion forming, wherein the extrusion forming generally adopts a wet powder making process, and the powder making process of dry pressing powder is divided into a dry powder making process and a wet powder making process.
The raw material grinding equipment of the wet powder making process adopts an intermittent or continuous wet ball milling grinding method, the water content of ground slurry reaches about 35%, the ground slurry is dried and granulated by a spray drying tower, the water content of granulated particles is 5% -7%, the granulated particles enter an ageing bin to be aged for 24-36 hours, and then enter a forming press to press a blank.
The raw material grinding equipment of the dry powder process adopts dry grinding equipment (such as a vertical mill, a Raymond mill and the like), the ground dry powder is granulated by granulation equipment (a disc granulator, a high-speed mechanical stirring granulator) by a granulation method, water is used as a binder, the dry powder ground by the dry method is agglomerated into granules with the water content of below 12%, the granules are dried by a dryer until the water content is about 7%, and the granules are stored for a short time and then enter a forming press to be pressed into blanks.
Therefore, compared with the traditional wet powder making process, the dry powder making process has the comprehensive skill reduction range of more than 67 percent, the number of operators in a raw material workshop can be reduced by 50 percent or more, the land occupation of the raw material workshop can be reduced by 30 percent, the exhaust emission is reduced by more than 80 percent, water is saved by 80 percent, electricity is saved by 50 percent, fuel is saved by 80 percent, and pebbles, ball linings and dispergators are not used, so that the process for replacing the wet powder making process is expected to be widely adopted by the ceramic industry in the future.
The research of the dry powder process is still in a grope state, the idea of ageing the granules of the wet powder process is still continued in the feeding link of the press in the process, the characteristics of the granules after the dry powder process granulation are not researched, the reason of ageing the granules of the original wet powder process is not deeply understood, the wet process is blindly applied in the dry powder process to age the granules after the dry powder process granulation, a large number of ageing bins are increased, the investment is greatly increased, and the granules obtained by the dry powder process are pulverized after ageing, so that the problems of difficult blanking of the feeding bin of the press, difficult material distribution of the press and the like are caused, and the dry powder process is difficult to be applied to the production of large-size low-water-absorption polished glazed bricks.
The invention provides a press feeding device which aims at the characteristics of pressing granules in the dry powder process and meets the process requirements aiming at the press feeding link of the ceramic dry powder process;
the practical exploration finds that: the granules after spray drying and granulation of the traditional wet powder making process can be aged for 24-36 hours before being pressed by a press to ensure uniform water content and ensure the quality of a pressed green body, the granules after granulation of the dry powder making process do not need to be aged and can be directly sent to the press for pressing, and the quality of the pressed green body completely meets the process requirements; compared with the press feeding device of the traditional wet milling process, the press feeding device of the new dry milling process has very big difference, and the differences are as follows:
1) the requirement of smooth discharging is met; the granules granulated by the dry powder process have poor flowability and unsmooth unloading, and the specific reasons are as follows: the fluidity of the granules granulated by the dry milling process is greatly reduced compared with that of the granules granulated by the spray drying of the traditional wet milling process, a funnel with the same taper is used for testing the time required for finishing the material flow of 1 liter of granules, and the time required for the granules granulated by the dry milling process is longer than that required for the granules granulated by the spray drying of the traditional wet milling process by more than 33 percent;
2) the matching homogenization function is required to be met; after the ageing bin is cancelled, the homogenization of the pressed granular materials is weakened, and the new feeding device of the press needs to realize the homogenization of different batches of granular materials, so that the balance and stability of the feeding water of the press are realized;
3) the pulverization caused by the transportation is reduced; the reason is that: the strength of the granules after granulation by the dry powder process is low, and the granules are easy to pulverize in the conveying process, so that the links of transportation and unloading are reduced; the grain composition distribution of the pressed granules entering the press is wider than that of granules after spray drying granulation by the traditional wet powder making process, and segregation is more easily generated, so that the compactness of the granules at each part of the grinding tool in the material distribution link of the press is uneven;
the reserves are required to meet the intermittent requirements of the process; the storage time of the original design of the feeding bin of the press is shorter, and once the granulator at the front section is stopped for a short time, the press can be cut off, so that the stable operation and production of the system are not facilitated;
disclosure of Invention
The invention aims to provide a press feeding device for a ceramic dry-method powder making process, wherein after dry-method powder making and granulating, the powder does not need to be aged, the granulated storage bin and a press feeding bin are combined, so that the material can be temporarily stored and can also be transferred, and a plurality of feeding bins with activated discharge cones are arranged at the bin bottom of each feeding bin and matched with a belt conveyor, so that the material conveying stroke can be shortened, the damage and the pulverization of dry-method powder and granular materials are reduced, and the stable conveying of the material is realized.
In order to achieve the purpose, the invention provides a press feeding device for a ceramic dry-process powder making process, which comprises a feeding unit and a press, wherein one end of the feeding unit is communicated with a dry-process powder making and wet-passing granulation process, the press is communicated with the other end of the feeding unit, and 4 feeding bins for temporarily storing powder are arranged between the feeding unit and the press.
Preferably, the feeding unit comprises a lifting conveying device, a three-way material distributing valve and a movable reversible belt conveyor which are sequentially arranged along a production line, and the feeding bin is uniformly arranged at the output end of the movable reversible belt conveyor.
Preferably, one end of a transverse belt conveyor is fixed under a discharge port of the feeding bin, one end of a vertical belt conveyor is fixed under the other end of the transverse belt conveyor, and the other end of the vertical belt conveyor is communicated with the input end of the press.
Preferably, each press is communicated with the four feeding bins through the vertical belt conveyor and the four groups of transverse belt conveyors in sequence.
Preferably, an activated discharging cone is fixed at the feed opening of the feeding bin.
Preferably, the horizontal belt conveyor and the vertical belt conveyor are both belt conveyors.
The pressing method based on the dry powder making non-staling pressing device comprises the following steps:
s1, placing the output end of the movable reversible belt conveyor to be aligned with the input port of the feeding bin;
s2, lifting the granules granulated and dried in the previous process by lifting conveying equipment, controlling a certain amount of powder to fall onto a movable reversible belt conveyor by a three-way material distributing valve, conveying the powder into a feeding bin by the movable reversible belt conveyor, controlling by a discharging control program, adjusting the feeding position of the reversible belt conveyor according to the material level of a bin, and ensuring the material levels of 4 feeding bins;
s3, after the pressed powder is temporarily stored in the feeding bin, the transverse belt conveyor at the bottom of the 4-bin is controlled according to a press feeding control program to realize simultaneous matched discharging, and the powder is transferred to the inside of the press through the transverse belt conveyor and the vertical belt conveyor in sequence to press the ceramic tile green body.
Therefore, the dry-method powder-making non-staling pressing device and the dry-method powder-making non-staling pressing method with the structure have the advantages that the process of ageing, storing and pressing granular materials for a long time (24-36 hours) in the traditional wet-method powder-making process is abandoned, the granular materials after granulation can directly enter a press for pressing only temporarily stored in a feeding bin (4-6 hours), the ageing link is eliminated, the problems of agglomeration and pulverization caused by long-time ageing of the granular materials are greatly reduced, and the dry-method powder-making can be widely applied to the production of ceramic tiles with various specifications.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a front view of a feeding device of a press for a ceramic dry-process powder making process according to an embodiment of the present invention;
FIG. 2 is a top view of a feeding device of a press for a ceramic dry-process powder making process according to an embodiment of the present invention;
fig. 3 is a schematic view of a feeding bin of a press feeding device for a ceramic dry-process powder making process according to an embodiment of the present invention.
Wherein: 1. lifting the conveying equipment; 2. a three-way material distributing valve; 3. a mobile reversible belt conveyor; 4. a feeding bin; 5. a transverse belt conveyor; 6. a vertical belt conveyor; 7. and (5) pressing.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
FIG. 1 is a front view of a feeding device of a press for a ceramic dry-process powder making process according to an embodiment of the present invention; fig. 2 is a top view of a press feeding device for a ceramic dry-process powder making process according to an embodiment of the present invention, fig. 3 is a schematic view of a feeding bin of the press feeding device for the ceramic dry-process powder making process according to the embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the structure of the present invention includes a feeding unit with one end communicated with a dry-process powder making and over-wet granulation process and a press 7 communicated with the other end of the feeding unit, and 4 feeding bins 4 for temporarily storing powder are further disposed between the feeding unit and the press 7. An activated discharging cone is fixed at the discharge opening of the feeding bin 4 and used for discharging materials. The diameter D of the feeding bin is 2500 mm-3500 mm, the upper part of the feeding bin is of a cylindrical shell structure, the height of the feeding bin is 2-3 times of that of the feeding bin, the lower part of the feeding bin is an eccentric circular table, the diameter of a lower opening of the circular table is 0.5-0.6 times of that of the circular table, the height of the circular table is 0.5-0.6 times of that of the circular table, and the eccentric distance of the circular table is 0.2-0.3 times of that of the circular table;
specifically, the feeding unit includes promotion conveying equipment 1, tee bend depiler valve 2 and the reversible band conveyer of portable 3 that set gradually along the production line, and feeding bin 4 has evenly been arranged to the output of the reversible band conveyer of portable 3. One end of a transverse belt conveyor 5 is fixed under a discharge port of the feeding bin 4, one end of a vertical belt conveyor 6 is fixed under the other end of the transverse belt conveyor 5, and the other end of the vertical belt conveyor 6 is communicated with an input end of a press 7. And each press 7 is communicated with four feeding bins 4 through a vertical belt conveyor 6 and four groups of transverse belt conveyors 5 in sequence, namely two transverse belt conveyors 5 are arranged on two sides of one vertical belt conveyor 6, namely the feeding port of each press 7 corresponds to four feeding bins 4, in the embodiment, three transverse belt conveyors 5 can be arranged on two sides of the vertical belt conveyor 6, namely the feeding port of each press 7 corresponds to six feeding bins 4. The transverse belt conveyor 5 and the vertical belt conveyor 6 are both belt conveyors.
The pressing method based on the dry powder making non-staling pressing device comprises the following steps:
s1, placing the output end of the movable reversible belt conveyor 3 to be aligned with the input port of the feeding bin 4;
s2, lifting the granules after being granulated and dried in the previous process by a lifting conveying device 1, controlling a certain amount of powder to fall onto a movable reversible belt conveyor 3 by a three-way material distributing valve 2, conveying the granules into a feeding bin 4 by the movable reversible belt conveyor 3, controlling by a discharging control program, adjusting the feeding position of the reversible belt conveyor according to the material level of a bin, ensuring the material levels of 4 feeding bins, namely detecting the material level of the feeding bin by an automatic material level meter, and enabling the feeding bin to be always at a high material level (above the straight section height of 3/4) through program control so as to reduce the height difference of the reversible belt conveyor material discharged into the feeding bin and reduce the damage of the profiling powder;
s3, temporarily storing the pressed powder in the feeding bin 4, controlling the horizontal belt conveyor 5 at the bottom of the 4 bins to simultaneously discharge materials according to a press feeding control program, and transferring the powder to the inside of a press 7 through the horizontal belt conveyor 5 and the vertical belt conveyor 6 in sequence to press a ceramic tile blank.
Therefore, the dry-method powder-making non-staling pressing device and the dry-method powder-making non-staling pressing method adopting the structure have the advantages that after the dry-method powder-making granulation powder is carried out, staling is not needed, the granulated storage bin is combined with the feeding bin of the pressing machine, the material can be temporarily stored and can also be transferred, and the problems of agglomeration and pulverization caused by long-time staling of the granules are greatly reduced by arranging a plurality of feeding bins with activated discharging cones at the feed openings of the feeding bins and matching belt type conveying, and simultaneously, the requirement of 1) smooth discharging is met; 2) matching and homogenizing; 3) the pulverization caused by the transportation is reduced; 4) the requirement of process intermittence is met, and the dry method powder preparation can be widely applied to the production of ceramic tiles with various specifications.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, for example, each press corresponds to 4 bins, and may also be 3-6, although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (1)
1. A press feeding device for a ceramic dry-process powder-making process comprises a feeding unit and a press, wherein one end of the feeding unit is communicated with a dry-process powder-making over-wet granulation process, and the press is communicated with the other end of the feeding unit, and is characterized in that: 4 feeding bins for temporarily storing profiling granular materials are further arranged between the feeding unit and the press;
the feeding unit comprises lifting conveying equipment, a three-way distributing valve and a movable reversible belt conveyor which are sequentially arranged along a production line, and the feeding bin is uniformly arranged at the output end of the movable reversible belt conveyor;
the diameter D of the feeding bin is 2500 mm-3500 mm, the upper part of the feeding bin is of a cylindrical shell structure, the height of the feeding bin is 2-3 times of D, the lower part of the feeding bin is an eccentric round table, the diameter of a lower opening of the round table is 0.5-0.6D, the height of the round table is 0.5-0.6 times of D, and the eccentric distance of the round table is 0.2-0.3 times of D;
one end of a transverse belt conveyor is fixed under a discharge port of the feeding bin, one end of a vertical belt conveyor is fixed under the other end of the transverse belt conveyor, and the other end of the vertical belt conveyor is communicated with an input end of the press;
the pressing method based on the press feeding device for the ceramic dry-process powder making process comprises the following steps of:
s1, placing the output end of the movable reversible belt conveyor to be aligned with the input port of the feeding bin;
s2, lifting the granules granulated and dried in the previous process by lifting conveying equipment, controlling a certain amount of powder to fall onto a movable reversible belt conveyor by a three-way material distributing valve, conveying the powder into a feeding bin by the movable reversible belt conveyor, controlling by a discharging control program, adjusting the feeding position of the reversible belt conveyor according to the material level of a bin, and ensuring the material levels of 4 feeding bins;
s3, temporarily storing the pressed powder in the feeding bin, controlling the horizontal belt conveyor at the bottom of the 4-bin according to a press feeding control program to realize simultaneous matched discharging, and transferring the powder to the inside of the press through the horizontal belt conveyor and the vertical belt conveyor in sequence to press a ceramic tile blank;
each press is communicated with the four feeding bins through the vertical belt conveyors and the four groups of transverse belt conveyors in sequence;
an activated discharging cone is fixed at the feed opening of the feeding bin;
the horizontal belt conveyor and the vertical belt conveyor are both belt conveyors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010204756.3A CN111391100B (en) | 2020-03-22 | 2020-03-22 | Press feeding device for ceramic dry-process powder making process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010204756.3A CN111391100B (en) | 2020-03-22 | 2020-03-22 | Press feeding device for ceramic dry-process powder making process |
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| CN111391100A CN111391100A (en) | 2020-07-10 |
| CN111391100B true CN111391100B (en) | 2021-12-14 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103693964A (en) * | 2013-12-14 | 2014-04-02 | 游洪 | Ceramic dry pressing pulverizing device and method |
| CN203935822U (en) * | 2014-07-15 | 2014-11-12 | 阳西博德精工建材有限公司 | A kind of ceramics by dry Granulation Equipments |
| WO2016185416A1 (en) * | 2015-05-21 | 2016-11-24 | Mariano Paganelli | Method for decoration on ceramic tiles that are pressed but not dried |
| CN206106102U (en) * | 2016-09-20 | 2017-04-19 | 江西和美陶瓷有限公司 | Ceramic body powder homogenization production line, homogenization equipment |
| CN110216777A (en) * | 2019-06-19 | 2019-09-10 | 河北金汇陶瓷有限公司 | Dry-pressing formed Ceramic Tiles green body production technology |
| CN209466445U (en) * | 2018-10-12 | 2019-10-08 | 佛山市德力泰科技有限公司 | A kind of energy-efficient device for preparing foamed ceramics powder |
| CN209478510U (en) * | 2018-08-21 | 2019-10-11 | 河北金汇陶瓷有限公司 | Dry method powder press blanking system |
-
2020
- 2020-03-22 CN CN202010204756.3A patent/CN111391100B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693964A (en) * | 2013-12-14 | 2014-04-02 | 游洪 | Ceramic dry pressing pulverizing device and method |
| CN203935822U (en) * | 2014-07-15 | 2014-11-12 | 阳西博德精工建材有限公司 | A kind of ceramics by dry Granulation Equipments |
| WO2016185416A1 (en) * | 2015-05-21 | 2016-11-24 | Mariano Paganelli | Method for decoration on ceramic tiles that are pressed but not dried |
| CN206106102U (en) * | 2016-09-20 | 2017-04-19 | 江西和美陶瓷有限公司 | Ceramic body powder homogenization production line, homogenization equipment |
| CN209478510U (en) * | 2018-08-21 | 2019-10-11 | 河北金汇陶瓷有限公司 | Dry method powder press blanking system |
| CN209466445U (en) * | 2018-10-12 | 2019-10-08 | 佛山市德力泰科技有限公司 | A kind of energy-efficient device for preparing foamed ceramics powder |
| CN110216777A (en) * | 2019-06-19 | 2019-09-10 | 河北金汇陶瓷有限公司 | Dry-pressing formed Ceramic Tiles green body production technology |
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