CN216006426U - Nonmetal grinding disc - Google Patents
Nonmetal grinding disc Download PDFInfo
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- CN216006426U CN216006426U CN202120258394.6U CN202120258394U CN216006426U CN 216006426 U CN216006426 U CN 216006426U CN 202120258394 U CN202120258394 U CN 202120258394U CN 216006426 U CN216006426 U CN 216006426U
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- nonmetal
- grinding disc
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- millstone
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Abstract
The utility model relates to a nonmetal millstone, and belongs to the field of papermaking and pulping equipment. The surfaces of the movable disc and the static disc of the nonmetal grinding disc are provided with uneven net structures, the specific surface area of the nonmetal grinding disc is increased by 2 to 3 times compared with the metal grinding disc, and the contact area of the nonmetal grinding disc and the straw is increased, so that the straw can be fully rubbed, extruded, kneaded, cut, divided into filaments and saponified to obtain the chopped fiber with good toughness. The nonmetal grinding disc has good wear resistance, high tensile strength and compressive strength and certain elasticity, and the movable disc and the static disc of the nonmetal grinding disc are not in contact with each other in the grinding process, so that the nonmetal grinding disc is long in service life. The refining process of the non-metal millstone refining is characterized in that no additive or auxiliary agent is added in the whole refining process, only water is added to reduce the temperature of straw fibers and prevent carbonization, and no pollutant is generated in the refining process.
Description
Technical Field
The utility model relates to a nonmetal millstone, and belongs to the field of papermaking and pulping equipment.
Background
The traditional straw fiber preparation method comprises full chemical pulping and semi-chemical mechanical pulping. The full-chemical pulping mode is that the straws are added with chemical agents to remove lignin and other organic components in straw fibers under the action of high temperature and high pressure, so that the prepared paper pulp fibers have low yield and high cost, simultaneously generate a large amount of pollutants, and have great environmental protection pressure. The semi-chemical pulping mode is that the straws are added with a certain chemical agent at 100 ℃, a high-concentration pulping machine with a metal grinding disc is used for pulping, some lignin and other organic components in straw fibers are removed, the yield of the prepared paper pulp fibers is low, the cost is high, meanwhile, certain pollutants are generated, and environmental protection facilities need to be added.
In order to solve the problems, a pure mechanical pulping mode is designed, straw raw materials are ground into pulp by a high-consistency refiner with a non-metal grinding disc, lignin in straw fibers is not removed, and other organic components are decomposed only under the condition of mechanical friction heating in the high-consistency refiner to prepare the paper pulp fibers. The yield of the straw fiber is high, the energy consumption is low, and most importantly, no pollutant is generated. No additive or auxiliary agent is added in the whole pulping process, only certain water is added to play the roles of reducing the temperature of the straw fiber and preventing carbonization, and all indexes of the manufactured paper pulp fiber completely meet the technical requirements of paper making packaging base paper fiber. In order to realize the refining process, a non-metal grinding disc meeting the requirement needs to be designed.
Disclosure of Invention
The non-metal grinding disc is designed, the requirements of a pure mechanical grinding process can be met, no additive or auxiliary agent is added in the whole grinding process, and only certain water is added to play the roles of reducing the temperature of straw fibers and preventing carbonization. Has good wear resistance, tensile strength and compressive strength, and has certain elasticity. The nonmetal mill includes the nonmetal driving disk and the nonmetal quiet dish of nonmetal that the shape is the same with the structure, and the surface of the moving of nonmetal mill, quiet dish is unevenness's network structure, compares the specific surface area of nonmetal mill with the metal mill and has increased 2 to 3 times. The nonmetal millstone has the shearing function of the metal millstone and also has the functions of friction, extrusion, kneading and filament separation, and the surface of the nonmetal millstone is provided with the inclined grooves, so that various indexes of the paper pulp fiber obtained by the pulping process of the nonmetal millstone can meet the technical requirements of making packaging raw paper fiber.
The utility model is realized by the following technical scheme:
a non-metal grinding disc comprises the following raw material components in percentage by weight:
a preparation process of a non-metal grinding disc comprises the following steps: uniformly mixing all the raw materials, putting the raw materials into a mould for cold press molding, and then putting the cold press molded nonmetal grinding disc into a sintering furnace; after the furnace door is sealed, setting the sintering temperature and starting the sintering furnace to sinter the nonmetal grinding disc in the sintering furnace; after sintering is finished, the furnace temperature is reduced to be lower than 100 ℃, and the sintering furnace is opened and the nonmetal grinding disc is taken out.
The utility model provides a nonmetal mill, has fine wearability, and tensile strength and compressive strength are high, also has certain elasticity simultaneously, and the surface of nonmetal mill has unevenness's network structure, is equipped with oblique slot. After the straws are added into a high-concentration pulping machine, under the high-speed rotation action of a non-metal grinding disc, the straws are subjected to a series of changes of friction, extrusion, kneading, cutting, filament separation and saponification between a movable disc and a static disc of the non-metal grinding disc. Because the surface of the nonmetal millstone has an uneven net structure, the specific surface area is increased by 2 to 3 times compared with the metal millstone, the contact area with the straw is increased, and the nonmetal millstone has the functions of friction, extrusion, kneading and wire separation besides the shearing function of the metal millstone, so that the straw can be fully rubbed, extruded, kneaded, cut off, wire separation and saponification to obtain short fibers with good toughness, and finally the obtained product flows out from the inclined groove of the nonmetal millstone under the action of centrifugal force.
The nonmetal grinding disc provided by the utility model has the following beneficial effects: the nonmetal grinding disc has good wear resistance, high tensile strength and high compressive strength, and also has certain elasticity. The surface of the nonmetal millstone is provided with an uneven net structure, the specific surface area of the nonmetal millstone is increased by 2 to 3 times compared with the metal millstone, the contact area with the straw is increased, and the nonmetal millstone has the functions of friction, extrusion, kneading and wire separation besides the shearing function of the metal millstone, so that the straw can be fully rubbed, extruded, kneaded, cut off, wire separation and saponified to obtain the chopped fiber with good toughness. The pulping process using the nonmetal millstone does not need to add any additive and auxiliary agent, only certain water is added to reduce the temperature of the straw fiber and prevent carbonization, and all indexes of the obtained paper pulp fiber can meet the technical requirements of paper making packaging base paper fiber.
Drawings
FIG. 1 is a schematic view of a non-metallic abrasive disc;
fig. 2 is a schematic view of the apparatus of the high consistency refiner.
In the figure: 1. the non-metal grinding disc, 2, the inclined groove, 3, the non-metal static disc and 4, the non-metal movable disc.
Detailed Description
A non-metal grinding disc comprises the following raw material components in percentage by weight:
the preparation process of the non-metal grinding disc comprises the following steps: uniformly mixing all the raw materials in proportion, putting the mixture into a mould for cold press molding, and then putting the cold press molded nonmetal millstone into a sintering furnace; after the furnace door is sealed, setting the sintering temperature and starting the sintering furnace to sinter the nonmetal grinding disc in the sintering furnace; after sintering is finished, the furnace temperature is reduced to be lower than 100 ℃, and the sintering furnace is opened and the nonmetal grinding disc is taken out.
The nonmetal grinding disc obtained by the method has good wear resistance, high tensile strength and compressive strength and certain elasticity, and the surface of the nonmetal grinding disc has an uneven net structure and is provided with inclined grooves. After the straws are added into a high-concentration pulping machine, under the high-speed rotation action of a non-metal grinding disc, the straws are subjected to a series of changes of friction, extrusion, kneading, cutting, filament separation and saponification between a movable disc and a static disc of the non-metal grinding disc. Because the surface of the non-metal grinding disc has the uneven net structure, the specific surface area is increased by 2 to 3 times compared with the metal grinding disc, and the contact area with the straw is increased. The nonmetal millstone has the shearing function of the metal millstone and also has the functions of friction, extrusion, kneading and filament separation, so that the straws can be fully rubbed, extruded, kneaded, cut off, filament separation and saponified to obtain short fibers with good toughness, and finally the obtained product flows out from the inclined groove of the nonmetal millstone under the action of centrifugal force.
Claims (1)
1. A non-metal grinding disc is characterized in that: nonmetal mill includes nonmetal driving disk and the quiet dish of nonmetal that the shape is the same with the structure, and the surface of nonmetal driving disk and the quiet dish of nonmetal is unevenness's network structure, and nonmetal mill surface is equipped with a plurality of oblique slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120258394.6U CN216006426U (en) | 2021-01-29 | 2021-01-29 | Nonmetal grinding disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120258394.6U CN216006426U (en) | 2021-01-29 | 2021-01-29 | Nonmetal grinding disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216006426U true CN216006426U (en) | 2022-03-11 |
Family
ID=80581651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120258394.6U Active CN216006426U (en) | 2021-01-29 | 2021-01-29 | Nonmetal grinding disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216006426U (en) |
-
2021
- 2021-01-29 CN CN202120258394.6U patent/CN216006426U/en active Active
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