CN209952751U - Calcium carbonate powder surface modification device - Google Patents
Calcium carbonate powder surface modification device Download PDFInfo
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- CN209952751U CN209952751U CN201920560489.6U CN201920560489U CN209952751U CN 209952751 U CN209952751 U CN 209952751U CN 201920560489 U CN201920560489 U CN 201920560489U CN 209952751 U CN209952751 U CN 209952751U
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Abstract
The utility model provides a calcium carbonate powder surface modification device, which belongs to the technical field of inorganic material surface modification and comprises a feeding hopper, a feeding pipe, a feeding fan, a mixing drum, a stirring box and a finished product collecting and filtering mechanism; the feeding hopper is connected with the middle part of the feeding pipe, one end of the feeding pipe is communicated with the feeding port of the mixing rotary drum, and the feeding fan is arranged at the end part of the other end of the feeding pipe and used for blowing powder into the mixing rotary drum; mix the rotary drum and rotate and set up in agitator tank top and discharge gate and agitator tank feed inlet intercommunication, mix the rotary drum inside wall and encircle and be provided with multilayer atomizer, atomizer is connected with liquid modifier feed pump, and the agitator tank discharge gate is collected filter equipment with the finished product and is connected. The calcium carbonate powder is mixed with air to form mist-shaped dust, and then the mist-shaped dust is mixed with the atomized denaturant, so that the surface modification quality is improved. The utility model provides a calcium carbonate powder surface modification device has the advantage that surface modification is of high quality, efficient, surface modification effect is stable.
Description
Technical Field
The utility model belongs to the technical field of inorganic material surface modification, especially, relate to a calcium carbonate powder surface modification device.
Background
The nanometer level calcium carbonate powder as stuffing for rubber and plastic product can raise the heat resistance, wear resistance, size stability, rigidity and machinability of the product and lower cost. The direct use of calcium carbonate powders in organic media presents two drawbacks: one is the agglomeration of calcium carbonate powder caused by intermolecular force, electrostatic action, hydrogen bond, etc.
The calcium carbonate powder has large specific surface area and is easy to absorb or act with gas and medium, thereby losing the original surface property and causing adhesion and agglomeration, or the growth speed of crystal grains is accelerated due to extremely high surface energy and large contact interface; in addition, due to the quantum tunneling effect, charge transfer and mutual coupling of interface atoms of the calcium carbonate powder, the calcium carbonate powder is interacted and aggregated due to solid-phase reaction. Secondly, the calcium carbonate powder is a hydrophilic inorganic compound, the surface of the calcium carbonate powder has hydroxyl with stronger hydrophilicity and is strong alkaline, so that the affinity of the calcium carbonate powder and organic high polymer is poor, aggregates are easy to form, the calcium carbonate powder is unevenly dispersed in the high polymer, the interface defect between the two materials is caused, and the direct application effect is not good. These disadvantages are even more pronounced with increasing amounts of calcium carbonate powder, and overfilling can even render the product unusable. Therefore, it is necessary to modify the surface of calcium carbonate powder to reduce its surface energy, improve its dispersibility, and render the surface lipophilic, thereby increasing the affinity of calcium carbonate powder with high polymers.
On one hand, the modifier can be directionally adsorbed on the surface of the calcium carbonate powder, so that the surface of the calcium carbonate powder has charge characteristics, and the physical adsorption and the chemical adsorption coexist, and the formed adsorption layer is relatively stable. Due to the repulsion of the same charge, the calcium carbonate powder is not easy to polymerize, thereby improving the wettability, the dispersibility and the stability of the calcium carbonate powder, creating the mutual repulsion between particles and playing a good dispersing effect. On the other hand, the interfacial compatibility and affinity of the calcium carbonate powder and organisms can be increased, so that the physical properties of the calcium carbonate powder and rubber or plastic composite materials are improved. Currently, modifiers can be classified into surfactants, coupling agents, polymers, and inorganic substances according to their structure and characteristics.
The calcium carbonate powder is generally mixed with a modifier on the surface, and then the mixture is stirred at a high speed, so that calcium carbonate particles and the modifier are fully rubbed, and the modifier is further ensured to be tightly attached to the calcium carbonate particles. However, the surface modification device in the prior art has many defects, firstly, the stirring device has a single structure, the calcium carbonate powder can only rotate along one direction ceaselessly, the calcium carbonate powder and the modifier are difficult to be mixed uniformly, and the surface modification quality is poor; in addition, the mechanical properties of the stirring device in the prior art are very lagged behind, and the surface modification device needs to consume huge energy for long-time high-speed operation.
SUMMERY OF THE UTILITY MODEL
Based on the problems in the prior art, the utility model provides a calcium carbonate powder surface modification device, which comprises a feeding hopper, a feeding pipe, a feeding fan, a mixing drum, a stirring box and a finished product collecting and filtering mechanism; the feeding hopper is connected with the middle part of the feeding pipe, one end of the feeding pipe is communicated with a feeding hole at the top of the mixing rotary drum, and the feeding fan is arranged at the end part of the other end of the feeding pipe and is used for blowing powder falling into the feeding pipe from the feeding hopper into the mixing rotary drum; the mixing drum is rotatably arranged above the stirring box through a driving device, a discharge port of the mixing drum is communicated with a feed port of the stirring box, a plurality of layers of atomizing nozzles are arranged on the inner side wall of the mixing drum in a surrounding mode, the atomizing nozzles are connected with a liquid modifier feed pump, a discharge port of the stirring box is connected with a finished product collecting and filtering mechanism, and the finished product collecting and filtering mechanism extracts powder which is stirred in the stirring box through suction and filters and collects the powder. The calcium carbonate powder is mixed with air to form mist-shaped dust, and then the mist-shaped dust is mixed with the atomized denaturant, so that the surface modification quality is improved. The utility model provides a calcium carbonate powder surface modification device has the advantage that surface modification is of high quality, efficient, surface modification effect is stable.
The utility model discloses a following detailed technical scheme reaches the purpose:
a calcium carbonate powder surface modification device comprises a feeding hopper, a feeding pipe, a feeding fan, a mixing drum, a stirring box and a finished product collecting and filtering mechanism;
the feeding hopper is connected with the middle part of the feeding pipe, one end of the feeding pipe is communicated with a feeding hole at the top of the mixing rotary drum, and the feeding fan is arranged at the end part of the other end of the feeding pipe and is used for blowing powder falling into the feeding pipe from the feeding hopper into the mixing rotary drum;
the mixing rotary drum is rotatably arranged above the stirring box through a driving device, a discharge port of the mixing rotary drum is communicated with a feed port of the stirring box, a plurality of layers of atomizing nozzles are arranged on the inner side wall of the mixing rotary drum in a surrounding mode, the atomizing nozzles are connected with a liquid modifier feed pump, a discharge port of the stirring box is connected with a finished product collecting and filtering mechanism, and the finished product collecting and filtering mechanism is used for pumping, filtering and collecting powder materials which are stirred in the stirring box through suction;
the powder falling into the feeding pipe from the feeding hopper enters the mixing rotary drum from a feeding hole at the top of the mixing rotary drum under the blowing of a feeding fan, and forms mist-shaped dust in the mixing rotary drum; the driving device drives the mixing rotary drum to rotate, so that the spraying dead angle formed by the arrangement of the atomizing spray head can be avoided, and the mixing effect is further improved;
the powder mixed with the modifier falls into a stirring box below a mixing drum under the action of gravity, and after stirring and mixing, a finished product collecting and filtering mechanism pumps out the powder stirred in the stirring box through suction, filters and collects the powder;
compared with the prior art, the quality of the surface modification of the calcium carbonate powder can be effectively improved by atomizing the powder material to form the vaporous dust and then premixing the vaporous dust with the atomized modifier.
The top of the mixing rotary drum is provided with a pressure release valve, an anti-escape filter screen is arranged between the pressure release valve and the mixing rotary drum, the feeding hopper is connected with the middle part of the feeding pipe through the feeding screw conveyor, the air pressure in the mixing rotary drum can be reduced through the pressure release valve, the situation that the feeding fan recoils the feeding hopper due to overhigh air pressure in the mixing rotary drum is prevented, and meanwhile, the feeding screw conveyor is additionally arranged, so that the feeding fan can be further prevented from recoiling the feeding hopper;
the stirring box comprises a plurality of groups of stirring cavities, the stirring cavities are arranged in a step shape from high to low, the side walls of the stirring cavities are mutually communicated, a stop boss is arranged between every two stirring cavities, the height of the stop boss is lower than half of the height of the side wall of the stirring cavity, a stirring roller is arranged in the stirring cavities in a rotating mode, the rotating direction of the stirring roller of the adjacent stirring cavity is opposite, the stirring roller is perpendicular to the step-by-step extending direction of the stirring cavities, a plurality of groups of stirring rods are spirally and circularly arranged on the stirring roller, under the stirring pushing of the stirring rods, powder and a modifier are continuously pushed to the next stirring cavity from high to low, and the modifier is gradually and fully wrapped on the powder in the stirring process;
the finished product collecting and filtering mechanism comprises a cyclone dust collector, a cloth bag type dust collector and an aggregate fan, wherein an air inlet of the cyclone dust collector is communicated with a discharge hole of the stirring box, an air outlet of the cyclone dust collector is communicated with an air inlet of the cloth bag type dust collector, and an air outlet of the cloth bag type dust collector is communicated with the aggregate fan;
the powder in the last stirring containing cavity of the stirring box is sequentially sucked into the cyclone dust collector and the bag type dust collector under the suction of the collecting fan, and is deposited under the action of the cyclone dust collector and the bag type dust collector to form a powder finished product.
The calcium carbonate powder surface modification device further comprises a storage box, a material outlet in the bottom of the cyclone dust collector is connected with a storage tank through a storage screw conveyor, and a powder finished product enters the storage tank under the pushing of the storage screw conveyor.
Wherein the calcium carbonate powder surface modification device also comprises a drying oven and a thermocuring oven, a feed inlet of the drying oven is connected with one end of the feed pipe far away from the feeding fan, the discharge hole of the drying box is communicated with the feed inlet at the top of the mixing drum, the drying box comprises a drying box body, a spiral evaporation pipeline and a drying and heating mechanism, the evaporation pipeline is arranged in the drying box body, two ends of the evaporation pipeline are respectively communicated with one end of the feeding pipe, which is far away from the feeding fan, and a feeding hole at the top of the mixing rotary drum, the evaporation pipeline is made of heat-resistant breathable materials, drying and heating mechanisms are wrapped below, left and right sides of the evaporation pipeline, the top of the box body is provided with an evaporation hole, when atomized powder passes through an evaporation pipeline under the blowing of the feeding fan, the drying and heating mechanism is used for heating the vaporous dust, so that water vapor in the dust is further reduced, and the adhesion effect of the modifier is further improved;
the hot curing box comprises a hot curing box body, a spiral hot curing pipeline and a hot curing heating mechanism, wherein the hot curing pipeline is arranged in the hot curing box body, two ends of the hot curing pipeline are respectively communicated with the discharge port of the stirring box and the air inlet of the cyclone dust collector, the upper side, the lower side, the left side and the right side of the hot curing pipeline are wrapped with the hot curing heating mechanisms, and powder which flows through the hot curing pipeline and is attached with a modifier is subjected to hot curing through the hot curing heating mechanisms, so that the attachment effect of the modifier is improved;
the top of the mixing rotary drum is provided with a one-way valve which is communicated from the outer side to the inner side of the mixing rotary drum and has adjustable internal and external pressure difference required for communication, so that negative pressure is formed in the mixing rotary drum when a finished product collecting and filtering mechanism continues to suck powder after a feeding fan stops working.
The utility model adopts the above technical scheme have that surface modification is of high quality, efficient, the stable advantage of surface modification effect.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged schematic structure diagram at a in fig. 1.
Fig. 3 is a schematic view of a section structure of a drying box according to an embodiment of the present invention.
Fig. 4 is a schematic view of a cross-sectional structure of a thermosetting box according to an embodiment of the present invention.
10. The device comprises a feeding hopper, 11, a feeding screw conveyor, 21, a feeding pipe, 22, a feeding fan, 30, a mixing drum, 31, an atomizing nozzle, 32, a pressure relief valve, 33, a one-way valve, 40, a stirring box, 41, a stirring cavity, 42, a stopping boss, 43, a stirring roller, 44, a stirring rod, 51, a cyclone dust collector, 52, a cloth bag type dust collector, 53, an aggregate fan, 54, a storage box, 55, a storage screw conveyor, 60, a drying box, 61, a drying box body, 62, an evaporation pipeline, 63, a drying heating mechanism, 64, an evaporation hole, 70, a thermosetting box, 71, a thermosetting box body, 72, a thermosetting pipeline, 73 and a thermosetting heating mechanism.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to the attached drawings, the calcium carbonate powder surface modification device comprises a feeding hopper 10, a feeding pipe 21, a feeding fan 22, a mixing drum 30, a stirring box 40 and a finished product collecting and filtering mechanism;
the feeding hopper 10 is connected with the middle part of a feeding pipe 21, one end of the feeding pipe 21 is communicated with a feeding hole at the top of the mixing rotary drum 30, and the feeding fan 22 is arranged at the end part of the other end of the feeding pipe 21 and is used for blowing the powder falling into the feeding pipe 21 from the feeding hopper 10 into the mixing rotary drum 30;
the mixing drum 30 is rotatably arranged above the stirring box 40 through a driving device, a discharge port of the mixing drum 30 is communicated with a feed port of the stirring box 40, a plurality of layers of atomizing nozzles 31 are arranged on the inner side wall of the mixing drum 30 in a surrounding manner, the atomizing nozzles 31 are connected with a liquid modifier feed pump, a discharge port of the stirring box 40 is connected with a finished product collecting and filtering mechanism, and the finished product collecting and filtering mechanism pumps out powder materials which are stirred in the stirring box 40 through suction and filters and collects the powder materials;
the powder falling into the feeding pipe 21 from the feeding hopper 10 enters the mixing rotary drum 30 from a feeding hole at the top of the mixing rotary drum 30 under the blowing of the feeding fan 22, mist-shaped dust is formed in the mixing rotary drum 30, the liquid modifier is pumped to the atomizing nozzle 31 by the liquid modifier feeding pump, and the atomizing nozzle 31 atomizes the liquid modifier and then mixes the atomized liquid modifier with the mist-shaped calcium carbonate dust; the driving device drives the mixing drum 30 to rotate, so that dead injection corners formed by the arrangement of the atomizing nozzles 31 can be avoided, and the mixing effect is further improved;
the powder mixed with the modifier falls into the stirring box 40 below the mixing drum 30 under the action of gravity, and after stirring and mixing, the finished product collecting and filtering mechanism pumps out the powder stirred in the stirring box 40 by suction, filters and collects the powder;
compared with the prior art, the quality of the surface modification of the calcium carbonate powder can be effectively improved by atomizing the powder material to form the vaporous dust and then premixing the vaporous dust with the atomized modifier.
Preferably, a pressure release valve 32 is arranged at the top of the mixing rotary drum 30, an anti-escape filter screen is arranged between the pressure release valve 32 and the mixing rotary drum 30, the feeding hopper 10 is connected with the middle part of the feeding pipe 21 through the feeding screw conveyor 11, the pressure in the mixing rotary drum 30 can be reduced through the pressure release valve 32, the feeding fan 22 is prevented from backflushing the feeding hopper 10 due to overhigh air pressure in the mixing rotary drum 30, and meanwhile, the feeding screw conveyor 11 is added, so that the feeding fan 22 can be further prevented from backflushing the feeding hopper 10;
the stirring box 40 comprises a plurality of groups of stirring cavities 41, the stirring cavities 41 are arranged in a step shape from high to low, the side walls of the stirring cavities 41 are communicated with each other, a stopping boss 42 is arranged between every two stirring cavities 41, the height of the stopping boss 42 is lower than half of the height of the side wall of each stirring cavity 41, the stirring cavities 41 are rotatably provided with stirring rollers 43, the rotating directions of the stirring rollers 43 of the adjacent stirring cavities 41 are opposite, the stirring rollers 43 are perpendicular to the step-by-step extending direction of the stirring cavities 41, a plurality of groups of stirring rods 44 are spirally and circularly arranged on the stirring rollers 43, under the stirring and pushing action of the stirring rods 44, powder and a modifier are continuously pushed to the next stirring cavity 41 from high to low, and the modifier is gradually and fully wrapped on the powder in the stirring process;
the finished product collecting and filtering mechanism comprises a cyclone 51, a bag type dust collector 52 and a collecting fan 53, wherein the air inlet of the cyclone 51 is communicated with the discharge hole of the stirring box 40, the air outlet of the cyclone 51 is communicated with the air inlet of the bag type dust collector 52, and the air outlet of the bag type dust collector 52 is communicated with the collecting fan 53;
the powder in the last stirring cavity 41 of the stirring box 40 is sucked into the cyclone 51 and the bag-type dust collector 52 in sequence under the suction of the collecting fan 53, and is deposited under the action of the cyclone 51 and the bag-type dust collector 52 to form a powder finished product.
Preferably, the calcium carbonate powder surface modification device further comprises a storage tank 54, the material outlet at the bottom of the cyclone 51 is connected with a storage tank through a storage screw conveyor 55, and the finished powder enters the storage tank under the pushing of the storage screw conveyor 55.
Preferably, the calcium carbonate powder surface modification device further comprises a drying box 60 and a heat curing box 70, wherein a feed inlet of the drying box 60 is connected with one end of the feed pipe 21 far away from the feeding fan 22, a discharge outlet of the drying box 60 is communicated with a feed inlet at the top of the mixing drum 30, the drying box 60 comprises a drying box body 61, a spiral evaporation pipeline 62 and a drying and heating mechanism 63, the evaporation pipeline 62 is arranged in the drying box body 61, two ends of the evaporation pipeline 62 are respectively communicated with one end of the feed pipe 21 far away from the feeding fan 22 and the feed inlet at the top of the mixing drum 30, the evaporation pipeline 62 is made of a heat-resistant air-permeable material, the drying and heating mechanism 63 is wrapped below and arranged at the left side and the right side of the evaporation pipeline 62, an evaporation hole 64 is arranged at the top of the box body, and atomized powder passes through the evaporation, further reducing the water vapor in the dust, and further improving the adhesion effect of the modifier;
the feeding hole of the thermosetting box 70 is communicated with the discharging hole of the stirring box 40, the discharging hole of the thermosetting box 70 is communicated with the air inlet of the cyclone-type dust collector 51, the thermosetting box 70 comprises a thermosetting box body 71, a spiral thermosetting pipeline 72 and a thermosetting heating mechanism 73, the thermosetting pipeline 72 is arranged in the thermosetting box body 71, two ends of the thermosetting pipeline 72 are respectively communicated with the discharging hole of the stirring box 40 and the air inlet of the cyclone-type dust collector 51, the thermosetting heating mechanism 73 is wrapped at the upper side, the lower side, the left side and the right side of the thermosetting pipeline 72, and powder which passes through the thermosetting pipeline 72 and is attached with a modifier is subjected to thermosetting through the thermosetting heating mechanism 73, so that the attaching effect of;
the top of the mixing drum 30 is provided with a check valve 33, the check valve 33 is communicated from the outer side of the mixing drum 30 to the inner side, and the required internal and external pressure difference is adjustable, so that negative pressure is prevented from being formed inside the mixing drum 30 when the finished product collecting and filtering mechanism continues to suck powder after the feeding fan 22 stops working.
The utility model discloses an foretell embodiment has that surface modification is of high quality, efficient, the stable advantage of surface modification effect.
The above-mentioned embodiments only represent one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (4)
1. The calcium carbonate powder surface modification device is characterized by comprising a feeding hopper (10), a feeding pipe (21), a feeding fan (22), a mixing drum (30), a stirring box (40) and a finished product collecting and filtering mechanism;
the feeding hopper (10) is connected with the middle part of a feeding pipe (21), one end of the feeding pipe (21) is communicated with a feeding hole at the top of the mixing rotary drum (30), and the feeding fan (22) is arranged at the end part of the other end of the feeding pipe (21) and is used for blowing powder falling into the feeding pipe (21) from the feeding hopper (10) into the mixing rotary drum (30);
mix rotary drum (30) and rotate through drive arrangement and set up in agitator tank (40) top and mix rotary drum (30) discharge gate and agitator tank (40) feed inlet intercommunication, it is provided with multilayer atomizer (31) to mix rotary drum (30) inside wall to encircle, atomizer (31) are connected with liquid modifier feed pump, agitator tank (40) discharge gate and finished product collection filter mechanism are connected, finished product collection filter mechanism is taken out and is filtered the collection with the powder of accomplishing the stirring in agitator tank (40) through the suction.
2. The calcium carbonate powder surface modification device according to claim 1, wherein a pressure relief valve (32) is arranged at the top of the mixing drum (30), an anti-escape filter screen is arranged between the pressure relief valve (32) and the mixing drum (30), and the feeding hopper (10) is connected with the middle part of the feeding pipe (21) through a feeding screw conveyor (11);
the stirring box (40) comprises a plurality of groups of stirring cavities (41), the stirring cavities (41) are arranged in a step shape from high to low, the side walls of the stirring cavities (41) are communicated with each other, a stopping boss (42) is arranged between every two stirring cavities (41), the height of the stopping boss (42) is lower than half of the height of the side wall of the stirring cavity (41), the stirring cavities (41) are rotatably provided with stirring rollers (43), the rotating directions of the stirring rollers (43) of the adjacent stirring cavities (41) are opposite, and a plurality of groups of stirring rods (44) are spirally wound on the stirring rollers (43);
the finished product collecting and filtering mechanism comprises a cyclone dust collector (51), a bag type dust collector (52) and an aggregate fan (53), wherein the air inlet of the cyclone dust collector (51) is communicated with the discharge hole of the stirring box (40), the air outlet of the cyclone dust collector (51) is communicated with the air inlet of the bag type dust collector (52), and the air outlet of the bag type dust collector (52) is communicated with the aggregate fan (53).
3. The calcium carbonate powder surface modification device according to claim 2, further comprising a storage tank (54), wherein the bottom material outlet of the cyclone (51) is connected with the storage tank through a storage screw conveyor (55).
4. The calcium carbonate powder surface modification device according to claim 3, further comprising a drying oven (60) and a heat curing oven (70), wherein the inlet of the drying oven (60) is connected with one end of the feeding pipe (21) far away from the feeding fan (22), the outlet of the drying oven (60) is communicated with the inlet at the top of the mixing drum (30), the inlet of the heat curing oven (70) is communicated with the outlet of the stirring oven (40), and the outlet of the heat curing oven (70) is communicated with the air inlet of the cyclone dust collector (51).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920560489.6U CN209952751U (en) | 2019-04-23 | 2019-04-23 | Calcium carbonate powder surface modification device |
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| CN201920560489.6U CN209952751U (en) | 2019-04-23 | 2019-04-23 | Calcium carbonate powder surface modification device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920623A (en) * | 2021-03-31 | 2021-06-08 | 广西贺州市科隆粉体有限公司 | Heavy calcium carbonate continuous atomization modification device for silicone adhesive and modification process thereof |
| CN113441030A (en) * | 2021-07-09 | 2021-09-28 | 南方科技大学 | Material mixing equipment |
-
2019
- 2019-04-23 CN CN201920560489.6U patent/CN209952751U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920623A (en) * | 2021-03-31 | 2021-06-08 | 广西贺州市科隆粉体有限公司 | Heavy calcium carbonate continuous atomization modification device for silicone adhesive and modification process thereof |
| CN113441030A (en) * | 2021-07-09 | 2021-09-28 | 南方科技大学 | Material mixing equipment |
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