Powder modification device

Abstract

The utility model provides a powder modifying device and relates to the technical field of powder processing. The powder modification device comprises a main body, a modifier feeding assembly and an air inlet assembly, the main body is provided with a powder inlet, and the powder inlet is used for feeding powder; the modifier feeding assembly is communicated with the main body and is used for spraying a modifier to the main body; the gas inlet assembly and the modifier feeding assembly are arranged at the two ends, in the axial direction of the main body, of the main body correspondingly, and the gas inlet assembly communicates with the main body and is used for introducing fluidizing gas into the main body, so that the powder suspends in the main body, and the powder is coated with the modifier. The gas inlet assembly introduces fluidizing gas into the main body so as to fluidize the powder in the main body, so that the powder can be in a suspension state after being blown up, the powder and the modifier are fully mixed, and an organic chemical reaction between the modifier and the surface of the powder is realized. The air inlet assembly is used for blowing air, the inorganic powder cannot be sheared at a high speed and damaged, the stability of the core-shell structure of the inorganic powder is guaranteed, and the overall coating rate can be increased.

Description

Technical Field

[0001] The utility model generally relates to the technical field of powder processing, and more specifically, to a powder modification device. Background Art

[0002] Due to the different surface or interface properties of inorganic fillers and various polymer matrices, their compatibility is poor, and it is difficult to disperse uniformly in matrices such as polymers. If directly filled or filled in excess, it often easily leads to some mechanical property defects and embrittlement of the materials. Therefore, by physically, chemically, mechanically and other methods to treat the surface of powder materials, not only can the production cost of the materials be reduced, but also the hardness, rigidity and dimensional stability of the materials can be improved, the mechanical properties of the materials can be improved and some special physical and chemical properties can be imparted to the materials.

[0003] Existing modification devices include a mixing tank, stirring fan blades and an atomizing sprayer. The stirring fan blades and the atomizing sprayer are respectively arranged at the bottom and the top of the mixing tank. After the inorganic powder is introduced into the mixing tank, the stirring fan blades blow up the inorganic powder, and the atomizing sprayer sprays the modifier to complete the chemical coating modification of the inorganic powder, so that the inorganic powder finally has a "core-shell" structure.

[0004] However, during the modification process, since the stirring fan blades will perform high-speed shearing on the inorganic powder with a "core-shell" structure and will damage the shell layer of the inorganic powder with a "core-shell" structure, resulting in the breakage of the shell layer of the inorganic powder with a "core-shell" structure and destroying the composite performance of the inorganic powder with a "core-shell" structure. Summary of the Utility Model

[0005] The powder modification device provided by the utility model improves the powder coating rate and structural stability.

[0006] According to one aspect of the utility model, there is provided a powder modification device, including:

[0007] A main body, which is provided with a powder inlet for introducing powder;

[0008] A modifier feeding assembly, which is communicated with the main body and is used for spraying the modifier into the main body;

[0009] An air inlet assembly, which is respectively arranged at two ends of the main body along the axial direction of the main body with the modifier feeding assembly, and the air inlet assembly is communicated with the main body and is used for introducing fluidizing gas into the main body to suspend the powder in the main body so as to coat the modifier on the outside of the powder.

[0010] In some embodiments, the main body includes:

[0011] A feeding chamber, which is communicated with the modifier feeding assembly and the powder inlet;

[0012] A fluidization chamber, along the axial direction of the main body, one end of the fluidization chamber communicates with the feed chamber, and the other end communicates with the air inlet assembly;

[0013] Wherein, the projection of the fluidization chamber on the reference plane is located inside the projection of the feed chamber on the reference plane, and the reference plane is perpendicular to the axial direction of the main body.

[0014] In some embodiments, the fluidization chamber includes:

[0015] An expansion part, which communicates with one end of the feed chamber away from the modifier feed assembly;

[0016] A reaction part, along the axial direction of the main body, one end of the reaction part communicates with the air inlet assembly, and the other end communicates with one end of the expansion part away from the feed chamber;

[0017] Wherein, the projection of the reaction part on the reference plane is located inside the projection of the expansion part on the reference plane.

[0018] In some embodiments, the expansion part is a conical structure, the large end of the expansion part is arranged towards the feed chamber, and the small end of the expansion part is arranged towards the reaction part.

[0019] In some embodiments, the reaction part is a cylindrical structure;

[0020] Or, the reaction part is a conical structure, and the small end of the reaction part communicates with the air inlet assembly;

[0021] Or, the reaction part includes a first reaction part and a second reaction part that communicate with each other. One end of the first reaction part away from the second reaction part communicates with the expansion part, and one end of the second reaction part away from the first reaction part communicates with the air inlet assembly. The first reaction part is a cylindrical structure, the second reaction part is a conical structure, and the small end of the second reaction part communicates with the air inlet assembly.

[0022] In some embodiments, the air inlet assembly includes:

[0023] An air inlet source for providing the fluidization gas;

[0024] An air inlet pipe, one end of the air inlet pipe communicates with the air inlet source, and the other end communicates with the main body;

[0025] A heater for heating the fluidization gas.

[0026] In some embodiments, the powder modification device further comprises a bearing partition, wherein the bearing partition is disposed at an end of the main body away from the powder inlet, and the bearing partition is used to bear the powder.

[0027] In some embodiments, the bearing partition is provided with an air-uniform through hole, and the air intake assembly is connected with the main body through the air-uniform through hole.

[0028] In some embodiments, a discharge port is provided at one end of the main body away from the powder inlet and / or the air inlet assembly.

[0029] In some embodiments, an exhaust port is provided at one end of the main body away from the air intake assembly along the axial direction of the main body.

[0030] In some embodiments, the modifier feeding assembly includes a modifier delivery component, a pressurizing component and an atomizing nozzle, wherein the atomizing nozzle is disposed in the main body and is connected to the modifier delivery component and the pressurizing component, respectively.

[0031] An embodiment of the utility model has the following advantages or beneficial effects:

[0032] The powder modification device provided by the embodiment of the utility model comprises a modifier feeding component which sprays the modifier onto the main body, and an air intake component which introduces a fluidizing gas into the main body to fluidize the powder in the main body so that the powder can be in a suspended state after being blown up, which is beneficial to the full mixing of the powder and the modifier, and realizes an organic chemical reaction between the modifier and the surface of the powder, so as to obtain an inorganic powder with an organic coating or modification on the surface.

[0033] Compared with the existing stirring and mixing method using stirring blades, blowing air using the air intake assembly will not damage the inorganic powder by high-speed shearing of the inorganic powder. While ensuring the stability of the core-shell structure of the inorganic powder, it can also improve the overall coverage rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.

[0035] in:

[0036] Figure 1Shown is a schematic structural diagram of a powder modification device according to an embodiment of the present utility model.

[0037] Among them, the reference numerals are explained as follows:

[0038] 1, main body; 2, modifier feeding assembly; 3, air inlet assembly; 4, bearing partition;

[0039] 101, powder inlet; 102, discharge port; 103, exhaust port;

[0040] 11, feeding chamber; 12, fluidization chamber; 121, expansion part; 122, reaction part; 1221, first reaction part; 1222, second reaction part;

[0041] 21, modifier conveying component; 211, modifier storage tank; 212, first pipeline; 213, second pipeline; 22, pressurizing component; 221, air compressor; 222, gas storage tank; 2221, pressure relief valve; 223, gas pipeline; 224, pressure regulating valve; 225, gas flow switch; 23, atomizing nozzle;

[0042] 31, air inlet source; 32, air inlet pipe; 33, heater. Detailed implementation manners

[0043] Next, the technical solutions in the exemplary embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the exemplary embodiments of the present utility model. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the protection scope of the present utility model. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the protection scope of the present utility model.

[0044] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance; the term "plurality" means two or more; the term "and / or" includes any combination and all combinations of one or more of the associated listed items. In particular, referring to "the / this" object or "one" object also intends to represent one of the possible multiple such objects.

[0045] Unless otherwise specified or described, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] Furthermore, in the description of the present utility model, it should be understood that the orientation terms such as "upper", "lower", "inner", and "outer" described in the exemplary embodiments of the present utility model are described from the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present utility model. It should also be understood that in the context, when an element or feature is referred to as being "on", "under", or "inside", "outside" of another element (one or more), it can not only be directly connected to the other element (one or more) "on", "under", or "inside", "outside", but also be indirectly connected to the other element (one or more) "on", "under", or "inside", "outside" through an intermediate element.

[0047] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted.

[0048] This embodiment provides a powder modification device, as Figure 1 shown. The powder modification device includes a main body 1, a modifier feeding assembly 2, and an air inlet assembly 3. The main body 1 is provided with a powder inlet 101 for introducing powder. The modifier feeding assembly 2 is communicated with the main body 1 and is used for spraying a modifier into the main body 1. The air inlet assembly 3 and the modifier feeding assembly 2 are respectively arranged at two ends of the main body 1 along the axial direction of the main body 1. The air inlet assembly 3 is communicated with the main body 1 and is used for introducing a fluidizing gas into the main body 1 to suspend the powder in the main body 1 so as to coat the modifier on the outside of the powder.

[0049] Among them, the modifier includes a coupling agent and an organic solvent. Among them, the organic solvent includes a hydrolysis agent and a diluent, and the coupling agent can be coated on the surface of the powder.

[0050] Among them, this embodiment takes the main body 1 as a vertical structure as an example. When the main body 1 is a vertical structure, the axial direction of the main body 1 is the vertical direction. The air inlet assembly 3 and the modifier feeding assembly 2 are respectively arranged at the upper and lower ends of the main body 1 along the axial direction of the main body 1. For example, the modifier feeding assembly 2 is located at the top of the main body 1, and the air inlet assembly 3 is located at the bottom of the main body 1. In some other embodiments, the main body 1 can also be a horizontal structure, the axial direction of the main body 1 is the horizontal direction, and the air inlet assembly 3 and the modifier feeding assembly 2 are respectively arranged at the left and right ends of the main body 1 along the axial direction of the main body 1. For example, the modifier feeding assembly 2 is located at the left end of the main body 1, and the air inlet assembly 3 is located at the right end of the main body 1.

[0051] The powder modification device provided in this embodiment has a modifier feeding assembly 2 spraying a modifier onto the main body 1, and an air inlet assembly 3 introducing a fluidizing gas into the main body 1 to fluidize the powder in the main body 1, enabling the powder to be in a suspended state after being blown up, facilitating the full mixing of the powder and the modifier, and realizing the organic chemical reaction between the modifier and the powder surface, so as to obtain an inorganic powder with surface organic coating or modification.

[0052] Compared with the existing mixing method using a stirring fan blade, blowing air by the air inlet assembly 3 will not cause high-speed shearing to damage the inorganic powder, and while ensuring the stability of the core-shell structure of the inorganic powder, it can also improve the overall coating rate.

[0053] Therefore, the powder modification device provided in this embodiment can not only meet the requirements of surface modification of inorganic powders, but also meet the requirements of surface modification of some special powders, such as inorganic powders with a "core-shell" structure, breaking through the limitation that traditional modifiers cannot modify powders with a "core-shell" structure.

[0054] In one embodiment, as Figure 1 shown, the modifier feeding assembly 2 includes a modifier conveying component 21, a pressurizing component 22, and an atomizing nozzle 23. The atomizing nozzle 23 is arranged in the main body 1, and the atomizing nozzle 23 is respectively communicated with the modifier conveying component 21 and the pressurizing component 22.

[0055] After the coupling agent and organic solvent of the modifier are configured in a certain proportion, the modifier conveying component 21 is used to convey the modifier to the atomizing nozzle 23, and the pressurizing component 22 is used to provide clean compressed gas for the atomizing nozzle 23. The compressed gas and the modifier are integrated in the atomizing nozzle 23, enabling the atomizing nozzle 23 to atomize and spray the modifier. After the modifier feeding assembly 2 is started, the modifier in a fully atomized state is evenly sprayed from the top of the main body 1, improving the uniformity of the distribution of the modifier sprayed in the main body 1.

[0056] Exemplarily, as Figure 1 shown, the pressurizing component 22 includes an air compressor 221, a gas storage tank 222, and an air delivery pipe 223. Among them, the air compressor 221 can be a screw air compressor. The air compressor 221 can provide the compressed air required in the spray modification process as the air power. The air compressor 221 is communicated with the gas storage tank 222, and the gas storage tank 222 is used to store the compressed air generated by the air compressor 221. A pressure relief valve 2221 is also arranged on the gas storage tank 222 for releasing the gas pressure in the gas storage tank 222. One end of the air delivery pipe 223 is communicated with the gas storage tank 222, and the other end is communicated with the atomizing nozzle 23 to convey the compressed air in the gas storage tank 222 to the atomizing nozzle 23.

[0057] Exemplarily, the modifier delivery component 21 includes a modifier storage tank 211, a first pipeline 212, and a second pipeline 213. The modifier storage tank 211 is used to store the modifier. One end of the first pipeline 212 communicates with the gas transmission pipe 223, and the other end communicates with the modifier storage tank 211. One end of the second pipeline 213 communicates with the modifier storage tank 211, and the other end communicates with the atomizing nozzle 23. Compressed air can be transported to the modifier storage tank 211 through the first pipeline 212 to extrude the modifier in the modifier storage tank 211, so that the modifier in the modifier storage tank 211 is transported to the atomizing nozzle 23 through the second pipeline 213.

[0058] A pressure regulating valve 224 is provided on the first pipeline 212 for regulating and stabilizing the pressure in the first pipeline 212, improving the reliability and safety of the equipment. A gas flow switch 225 may also be provided on the first pipeline 212 for controlling the gas flow. In addition, the opening degree of the gas flow switch 225 can be adjusted to adjust the gas flow rate, so as to achieve the adjustment of the modifier feeding amount.

[0059] Among them, the modifier storage tank 211 includes a first tank body and a first cover plate. The first tank body is used to accommodate the modifier. The top of the first tank body has a first open end. The first cover plate is detachably connected to the first tank body and can block the first open end. After the first cover plate is removed from the first tank body, the modifier is filled into the first tank body through the first open end. After the filling of the modifier is completed, the first cover plate is then covered on the first open end of the first tank body. By using the detachable manner of the first cover plate and the first tank body, it is convenient for installation and maintenance, and can also serve as the feeding port of the modifier, facilitating the filling of the modifier.

[0060] It can be understood that the first cover plate and the first tank body can be connected by means of screw connection, bolt connection, snap connection, etc. As long as the detachable connection between the two can be achieved, it is within the protection scope of this embodiment. In addition, the first cover plate is provided with a first joint connected to the first pipeline 212, and the bottom of the first tank body is provided with a second joint connected to the second pipeline 213.

[0061] Of course, in some other embodiments, the first cover plate and the first tank body can also be of a fixed structure, and the feeding port is directly provided on the first cover plate, which can also achieve the filling of the modifier into the first tank body.

[0062] In one embodiment, the main body 1 includes a second tank body and a second cover plate. The second tank body is used to accommodate powder. The top of the second tank body has a second open end. The second cover plate is detachably connected to the second tank body and can block the second open end. After the second cover plate is detached from the second tank body, powder is filled into the second tank body through the second open end. After the powder filling is completed, the second cover plate is then covered on the second open end of the second tank body. By using the detachable manner of the second cover plate and the second tank body, it is convenient for installation and maintenance, and the gap between the second open end or the second tank body and the second cover plate can serve as the powder inlet 101 for filling powder, which is convenient for filling powder.

[0063] It can be understood that the second cover plate and the second tank body can be connected by means of screw connection, bolt connection, snap connection, etc. As long as the detachable connection between the two can be achieved, it is within the protection scope of this embodiment. In addition, the second cover plate is provided with a first through hole for the gas transmission pipe 223 to pass through and a second through hole for the second pipeline 213 to pass through.

[0064] Of course, in some other embodiments, the second tank body and the second cover plate can also be of a fixed structure, and the powder inlet 101 is directly provided on the second cover plate, which can also achieve filling powder into the second tank body.

[0065] In one embodiment, as Figure 1 shown, the second tank body of the main body 1 includes a feed cavity 11. The powder inlet 101 and the modifier feeding assembly 2 are communicated with the feed cavity 11. The powder is filled into the feed cavity 11 by using the powder inlet 101. The atomizing nozzle 23 is located at the top of the feed cavity 11 along the axial direction of the main body 1. The atomizing nozzle 23 sprays the modifier in a fully atomized state into the feed cavity 11 to achieve the effect of atomized spraying, so as to increase the contact area between the modifier and the powder.

[0066] The second tank body of the main body 1 further includes a fluidization cavity 12. Along the axial direction of the main body 1, one end of the fluidization cavity 12 is communicated with the feed cavity 11, and the other end is communicated with the air inlet assembly 3. The modifier and the powder located in the feed cavity 11 descend into the fluidization cavity 12 under the action of their own gravity to realize powder coating modification in the fluidization cavity 12. The fluidization area provides a reaction space for powder coating modification. The fluidization gas is introduced into the fluidization cavity 12 by using the air inlet assembly 3. The fluidization gas can blow up the powder to avoid the situation of powder precipitation caused by continuous falling, and improve the sufficiency of contact between the powder and the modifier.

[0067] Wherein, the projection of the fluidization cavity 12 on the reference plane is located inside the projection of the feed cavity 11 on the reference plane, and the reference plane is perpendicular to the axial direction of the main body 1.

[0068] That is, the cross-sectional area of the fluidization chamber 12 is less than or equal to the cross-sectional area of the feed chamber 11. After the fluidization gas enters the feed chamber 11 from the fluidization chamber 12, the flow rate of the fluidization gas will decrease. At this time, the upward supporting force of the fluidization gas on the powder is less than the gravity of the powder, and the situation where the fluidization gas is insufficient to support the powder will occur, resulting in the powder falling back to the fluidization chamber 12 to continue the reaction, so as to ensure sufficient contact and modification reaction between the powder and the modifier in the fluidization chamber 12. In this way, the spaces of the fluidization chamber 12 and the feed chamber 11 can also be isolated to avoid the situation of blocking the atomizing nozzle 23 caused by excessive upward movement of the powder.

[0069] In one embodiment, as Figure 1 shown, the fluidization chamber 12 includes an expansion part 121 and a reaction part 122. The expansion part 121 communicates with one end of the feed chamber 11 away from the modifier feeding assembly 2. Along the axial direction of the main body 1, one end of the reaction part 122 communicates with the air inlet assembly 3, and the other end communicates with one end of the expansion part 121 away from the feed chamber 11.

[0070] Since the expansion part 121 is located between the feed chamber 11 and the reaction part 122, the expansion part 121 plays a buffering role between the reaction part 122 and the feed chamber 11. After the powder and the modifier enter the reaction part 122 through the expansion part 121, the reaction part 122 provides a reaction space for powder coating modification.

[0071] Among them, the projection of the reaction part 122 on the reference plane is located inside the projection of the expansion part 121 on the reference plane. After the fluidization gas enters the expansion part 121 with a larger cross-section through the reaction part 122 with a smaller cross-section, the flow rate of the fluidization gas will decrease, and the powder will return to the reaction part 122 to continue the reaction due to unbalanced force. At the same time, the cross-sections of the reaction part 122, the expansion part 121, and the feed chamber 11 gradually increase, showing an effect of sequential expansion, so that when the fluidization gas passes through the reaction part 122, the expansion part 121, and the feed chamber 11 in sequence, the supporting force on the powder gradually decreases, and there will be no sudden change in the supporting force of the powder. Due to the slow change amplitude of the supporting force, the suspension time of the powder in the entire fluidization chamber 12 is prolonged, thereby improving the sufficiency of contact between the powder and the modifier and the modification effect.

[0072] Among them, the expansion part 121 is of a conical structure, the large mouth end of the expansion part 121 is arranged towards the feed chamber 11, and the small mouth end of the expansion part 121 is arranged towards the reaction part 122.

[0073] In this way, the inner wall of the expansion part 121 is an inclined surface, and the powder and the modifier sprayed from the atomizing nozzle 23 can slide to the reaction part 122 through the inclined surface of the expansion part 121, playing a guiding role and facilitating the full reaction of the powder and the modifier in the reaction part 122. At the same time, the large-mouth end of the expansion part 121 can receive the powder and the modifier in a large range, and the small-mouth end of the expansion part 121 is arranged towards the reaction part 122, playing a role of converging and concentrating towards the reaction part 122. In addition, when the powder falls back from the feeding cavity 11 or the expansion part 121, the powder can fall back into the reaction part 122 through the inclined surface.

[0074] Among them, the reaction part 122 can be a cylindrical structure, with a simple structure and relatively low production cost.

[0075] Among them, the reaction part 122 can also be a conical structure, and the small-mouth end of the reaction part 122 is connected to the air inlet assembly 3. At this time, the reaction part 122 is a first-stage expansion structure, the expansion part 121 is a second-stage expansion structure, and the reaction part 122 and the expansion part 121 form a two-stage expansion structure, enabling the powder with a larger weight to carry out modification reaction in the reaction part 122, and the powder with a smaller weight to carry out modification reaction in the expansion part 121, realizing the functions of separation and screening to a certain extent.

[0076] In one embodiment, the reaction part 122 includes but is not limited to a cylindrical structure and a conical structure. The reaction part 122 can also include a first reaction part 1221 and a second reaction part 1222 that are connected to each other. One end of the first reaction part 1221 far from the second reaction part 1222 is connected to the expansion part 121, and one end of the second reaction part 1222 far from the first reaction part 1221 is connected to the air inlet assembly 3. The first reaction part 1221 is a cylindrical structure, the second reaction part 1222 is a conical structure, and the small-mouth end of the second reaction part 1222 is connected to the air inlet assembly 3.

[0077] At this time, the second reaction part 1222 and the expansion part 121 are connected through the first reaction part 1221. The first reaction part 1221 plays a role of intermediate isolation and buffering, and since the first reaction part 1221 has a certain extension length in the axial direction of the main body 1, it also ensures a sufficient reaction space for the powder and the modifier to a certain extent. The second reaction part 1222 is a first-stage expansion structure, the first reaction part 1221 is a second-stage expansion structure, and the expansion part 121 is a third-stage expansion structure, which is suitable for the modification process of powders with different weights.

[0078] In one embodiment, as Figure 1As shown, the intake assembly 3 includes an intake source 31 and an intake pipe 32. Among them, the intake source 31 can be a blower, and the intake source 31 is used to provide fluidizing gas. One end of the intake pipe 32 is connected to the intake source 31, and the other end is connected to the main body 1. The fluidizing gas is transported to the reaction part 122 of the main body 1 through the intake pipe 32. The fluidizing gas can blow up the powder in the reaction part 122, while realizing the mixing of the powder and the modifier, and also avoiding the deposition of the powder due to falling.

[0079] The intake assembly 3 further includes a heater 33. The heater 33 is used to heat the fluidizing gas so that the fluidizing gas has a certain temperature, which is beneficial to the volatilization of the organic solvent in the modifier and avoids the situation that the organic solvent wets the powder and easily adheres to the inner wall of the main body 1. At the same time, the covalent bond between the modifier and the powder is realized during the further heating process, which is beneficial to the coating effect between the modifier and the powder.

[0080] Exemplarily, the heater 33 can be an air heater. The intake source 31 is connected to the intake pipe 32 through the air heater 33, and the heated fluidizing gas is transported to the reaction part 122 through the intake pipe 32. The heater 33 can also be a heating sleeve, and the heating sleeve is wrapped around the outside of the intake pipe 32 to heat the fluidizing gas in the intake pipe 32. The type and installation position of the heater 33 in this embodiment are not limited and can be adjusted according to the actual production situation.

[0081] As Figure 1 shown, along the axial direction of the main body 1, an exhaust port 103 is provided at one end of the main body 1 away from the intake assembly 3. Exemplarily, the exhaust port 103 is provided on the second cover plate of the main body 1, so that the fluidizing gas in the main body 1 is discharged through the exhaust port 103, avoiding the situation that the air pressure in the main body 1 is too high, resulting in difficulties in the feeding of the modifier and the intake of the fluidizing gas.

[0082] In one embodiment, as Figure 1 shown, the powder modification device further includes a bearing partition 4. The bearing partition 4 is arranged at one end of the main body 1 away from the powder inlet 101, and the bearing partition 4 is used to bear the powder.

[0083] Exemplarily, the bearing partition 4 is arranged between the reaction part 122 of the main body 1 and the intake pipe 32 of the intake assembly 3. The bearing partition 4 can also be arranged at a position close to the bottom of the reaction part 122. The bearing partition 4 provides a certain supporting force for the powder, avoiding the situation that the powder keeps falling under its own gravity. At the same time, the bearing partition 4 plays a role in separating the reaction part 122 and the intake pipe 32 to a certain extent, so that the powder can be restricted in the reaction part 122 and is convenient for full reaction with the modifier.

[0084] In one embodiment, the bearing partition 4 is provided with air distribution through holes (not shown in the figure), and the intake assembly 3 is connected to the main body 1 through the air distribution through holes.

[0085] That is, the carrier partition 4 can also be called a sieve plate. The fluidizing air conveyed by the air inlet pipe 32 of the air inlet assembly 3 enters the reaction part 122 through the air equalizing through holes to redistribute the fluidizing gas and achieve the air equalizing effect.

[0086] It can be understood that the number of the air equalizing through holes can be one, and one air equalizing through hole is arranged at the center position of the carrier partition 4; the number of the air equalizing through holes can also be multiple, and multiple air equalizing through holes are evenly distributed on the carrier partition 4 to ensure the uniformity of the fluidizing gas distribution in the reaction part 122.

[0087] In one embodiment, a discharge port 102 is provided at one end of the main body 1 away from the powder inlet 101 and / or on the air inlet assembly 3. After the powder and the modifier are subjected to a modification reaction in the reaction part 122, discharging is carried out through the discharge port 102.

[0088] It should be particularly noted that a discharge valve is provided in the discharge port 102. When the air inlet source 31 is opened, the discharge valve can be closed to prevent the fluidizing gas from being discharged through the discharge port 102 and ensure that all the fluidizing gas enters the reaction part 122; when the discharge valve is opened, the air inlet source 31 is closed, and the powder that has completed the modification reaction can be discharged through the discharge port 102 to avoid the situation that the fluidizing gas blows up the powder again.

[0089] The production process of the powder modification device provided in this embodiment is as follows:

[0090] The powder enters the main body 1 through the powder adding port, and the prepared modifier enters the atomizing nozzle 23 at a set flow rate through the modifier feeding assembly 2. After flowing into the atomizing nozzle 23, the modifier is sprayed downward in an atomized state under the action of compressed air. At the same time, the air inlet assembly 3 is used to introduce the fluidizing gas into the reaction part 122, and the powder is in a suspended state in the reaction part 122 under the action of the fluidizing gas, and the suspended main body 1 and the atomized modifier are fully mixed. Finally, the air inlet assembly 3 is closed, and the powder that has completed the modification reaction can be discharged through the discharge port 102.

[0091] It should be noted here that what is shown in the drawings and described in this specification is only an example of adopting the principle of the present invention. Those of ordinary skill in the art should clearly understand that the principle of the present invention is not limited to any details of the device shown in the drawings or described in the specification or any component.

[0092] It should be understood that the present utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The present utility model can have other embodiments and can be implemented and executed in various ways. The foregoing variations and modifications fall within the scope of the present utility model. It should be understood that the present utility model disclosed and defined in this specification extends to all alternative combinations of two or more separate features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of the present utility model. The embodiments described in this specification illustrate the best mode known for implementing the present utility model and will enable those skilled in the art to utilize the present utility model.

[0093] After considering the specification and practicing the creation disclosed herein, those skilled in the art will readily conceive of other embodiments of the present utility model. The present utility model is intended to cover any variations, uses, or adaptations of the present utility model that follow the general principles of the present utility model and include well-known common general knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and the example embodiments are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the appended claims.

[0094] It should be understood that the present utility model is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The protection scope of the present utility model is only limited by the appended claims.

Claims

1. A powder modification device, characterized in that: include: A main body, wherein the main body is provided with a powder inlet, and the powder inlet is used to pass the powder; A modifier feeding assembly, connected to the main body, for spraying the modifier to the main body; An air intake assembly and the modifier feed assembly are respectively arranged at both ends of the main body along the axial direction of the main body. The air intake assembly is connected to the main body and is used to introduce fluidizing gas into the main body to suspend the powder in the main body so as to coat the modifier on the outside of the powder.

2. The powder modification device according to claim 1, characterized in that: The subject includes: A feed cavity, connected to the modifier feed assembly and the powder feed port; A fluidizing chamber, along the axial direction of the main body, one end of the fluidizing chamber is connected to the feed chamber, and the other end is connected to the air intake assembly; The projection of the fluidizing chamber on the reference plane is located inside the projection of the feeding chamber on the reference plane, and the reference plane is perpendicular to the axial direction of the main body.

3. The powder modification device according to claim 2, characterized in that: The fluidizing chamber comprises: An expansion portion, connected to an end of the feed chamber away from the modifier feed assembly; A reaction part, along the axial direction of the main body, one end of the reaction part is connected to the air inlet assembly, and the other end is connected to an end of the expansion part away from the feed cavity; The projection of the reaction portion on the reference plane is located inside the projection of the expansion portion on the reference plane.

4. The powder modification device according to claim 3, characterized in that: The expansion part is a conical structure, the large end of the expansion part is arranged toward the feed cavity, and the small end of the expansion part is arranged toward the reaction part.

5. The powder modification device according to claim 3, characterized in that: The reaction part is a cylindrical structure; Or, the reaction part is a conical structure, and the small mouth end of the reaction part is connected to the air intake assembly; Alternatively, the reaction part includes a first reaction part and a second reaction part which are interconnected, wherein one end of the first reaction part away from the second reaction part is connected to the expansion part, and one end of the second reaction part away from the first reaction part is connected to the air intake assembly, the first reaction part is a cylindrical structure, the second reaction part is a conical structure, and the small mouth end of the second reaction part is connected to the air intake assembly.

6. The powder modification device according to any one of claims 1 to 5, characterized in that: The air intake assembly comprises: An air inlet source, for providing the fluidizing gas; An air intake pipe, one end of which is connected to the air intake source, and the other end of which is connected to the main body; A heater is used to heat the fluidizing gas.

7. The powder modification device according to any one of claims 1 to 5, characterized in that: The powder modification device further comprises a bearing partition, which is arranged at one end of the main body away from the powder inlet, and is used for bearing the powder.

8. The powder modification device according to claim 7, characterized in that: The bearing partition is provided with an air-uniform through hole, and the air intake assembly is connected with the main body through the air-uniform through hole.

9. The powder modification device according to any one of claims 1 to 5, characterized in that: An end of the main body away from the powder inlet and / or the air inlet assembly is provided with a discharge port.

10. The powder modification device according to any one of claims 1 to 5, characterized in that: An exhaust port is provided at one end of the main body away from the air intake assembly along the axial direction of the main body.

11. The powder modification device according to any one of claims 1 to 5, characterized in that: The modifier feeding assembly comprises a modifier conveying component, a pressurizing component and an atomizing nozzle. The atomizing nozzle is arranged in the main body and is communicated with the modifier conveying component and the pressurizing component respectively.

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