Circulating type colloid mill grinding machine

Abstract

The utility model relates to the technical field of fluid machinery and crushing and grinding, and mainly relates to a circulating type colloid mill grinding machine, which comprises a colloid mill and a dispersing mechanism, the colloid mill comprises a grinding cavity and a grinding mechanism arranged in the grinding cavity; the dispersing mechanism is arranged at the top of the grinding mechanism, the dispersing mechanism is arranged at the feeding port of the grinding cavity, the dispersing mechanism is arranged on the basis of the structure of an existing glue mill, and large-particle powder substances in hot melt glue are uniformly dispersed in advance through the dispersing mechanism; then, the superfine particles and the nanoscale materials in the hot melt adhesive are sheared and dispersed through the colloid mill, so that the colloid mill meets the requirement for nanometer material dispersion, meanwhile, interference of large-particle powder on nanometer material shearing dispersion of the colloid mill can be reduced, and the nanometer material shearing dispersion effect of the colloid mill is improved.

Description

Technical Field

[0001] This utility model relates to the field of fluid machinery and grinding technology, and mainly to a circulating colloid mill grinding machine. Background Technology

[0002] When nanoscale fillers (such as nano-dispersed mesh SiO2, graphene), functional powders (conductive carbon black, thermally conductive particles) or high-melting-point, difficult-to-disperse components are introduced into the formulation of hot melt adhesives, it is necessary to ensure that they are uniformly dispersed in the matrix and avoid agglomeration, otherwise the mechanical, electrical, and thermal properties of the adhesive will be affected.

[0003] Conventional grinding equipment, such as planetary mixers, twin-screw extruders, and high-speed dispersers, may encounter problems when preparing thermally conductive hot melt adhesives, conductive hot melt adhesives, and high-strength nanocomposite hot melt adhesives. These issues can lead to uneven dispersion of ultrafine particles and uneven mixing of nanoscale materials. In such cases, colloid mills are often used to replace existing conventional grinding equipment.

[0004] For example, the utility model patent with application number CN202320813088.3 discloses a colloid mill mechanism with pre-crushing blades. The pre-crushing blades pre-crush the material entering the colloid mill grinding chamber, so that some large particles are crushed into small particles first, which is convenient for subsequent colloid mill grinding. Secondly, the pre-crushing blades extend from inside and outside the grinding chamber, so that the blades play a stirring role during the crushing process, which makes the various different components in the material fully mixed, which is convenient for obtaining a uniformly mixed material in the later stage.

[0005] However, the applicant found that the aforementioned colloid mill still has shortcomings when applied to hot melt adhesive processing:

[0006] Due to the high viscosity and high viscosity of hot melt adhesives, while ultrafine particles and nanoscale materials are well dispersed and uniformly mixed through a colloid mill, large particles such as calcium carbonate that are originally present in the hot melt adhesive also need to be dispersed through a colloid mill. However, calcium carbonate is prone to agglomeration in the colloid, and using a colloid mill for dispersion alone will affect the dispersion efficiency of the colloid mill for ultrafine particles and nanoscale materials.

[0007] Therefore, there is an urgent need for a circulating colloid mill that can be applied to thermally conductive hot melt adhesives, conductive hot melt adhesives, and high-strength nanocomposite hot melt adhesives. Utility Model Content

[0008] To address the above issues, a high-precision, high-flow-rate circulating colloid mill was developed. By incorporating a dispersion mechanism into the existing colloid mill structure, large particles of powder within the hot melt adhesive are pre-uniformly dispersed. Then, the colloid mill shears and disperses the ultrafine particles and nanoscale materials within the hot melt adhesive. This allows the colloid mill to satisfy the dispersion requirements of nanomaterials while reducing the interference of large powder particles on the shearing and dispersion of nanomaterials, thereby improving the colloid mill's effectiveness in shearing and dispersing nanomaterials.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A circulating colloid mill, comprising:

[0011] Colloid mill and dispersion mechanism;

[0012] The colloid mill includes a grinding chamber and a grinding mechanism disposed within the grinding chamber;

[0013] The dispersing mechanism is located at the top of the grinding mechanism and at the feed inlet of the grinding chamber. The dispersing mechanism disperses the powder material entering the grinding chamber.

[0014] As an improvement, the grinding mechanism includes a grinding body disposed on the top of the grinding shaft and an inner ring sleeve sleeved outside the grinding body. The grinding body is frustum-shaped and rotates synchronously with the grinding shaft. Grinding stripes are provided on the outer side wall of the grinding body. The inner ring sleeve is cylindrical and fixedly disposed. The inner side wall of the inner ring sleeve is provided with oblique stripes that correspond to and cooperate with the grinding stripes. A material grinding gap is formed between the grinding body and the inner ring sleeve.

[0015] As an improvement, the bottom of the grinding body is also provided with several sets of dispersing blades, which are evenly distributed along the circumference of the grinding body and are inclined.

[0016] As an improvement, the inner ring sleeve is fitted with a grinding head chamber, which forms the grinding cavity. The inner ring sleeve and the grinding head chamber are detachably connected. A discharge port is provided on one side of the bottom of the grinding head chamber, which is connected to the material grinding gap.

[0017] As an improvement, a threaded groove is provided on the top of the outer side wall of the grinding head chamber, and an outer ring sleeve is fitted on the top of the grinding head chamber. The outer ring sleeve is connected to the threaded groove on the top of the grinding head chamber by the threaded threads provided on the inner wall. Adjusting handles are symmetrically inserted on the outer ring sleeve. The adjusting handles press the inner ring sleeve to adjust the width of the material grinding gap.

[0018] As an improvement, the top of the grinding body is recessed and has a feeding groove. A vertically arranged feeder is installed in the feeding groove. The feeder is arranged in the shape of a propeller blade and is arranged to rotate with the grinding body.

[0019] As an improvement, the top of the feeder is provided with the dispersing mechanism, which includes a connecting shaft, a dispersing mesh and several sets of pressing plates. The connecting shaft is vertically connected to the top of the feeder, and the dispersing mesh is horizontally arranged on the top of the connecting shaft. Several sets of pressing plates are evenly distributed on the upper surface of the dispersing mesh along the circumferential direction of the connecting shaft, and the pressing plates are inclined.

[0020] As an improvement, a driven pulley is installed at the lower end of the grinding shaft, and a drive motor is provided on one side of the grinding shaft. The drive motor is vertically installed on the base, and the end of the output shaft of the drive motor is connected to a driving pulley. A belt is arranged around the driving pulley and the driven pulley.

[0021] As an improvement, a threaded groove is provided on the top of the inner sidewall of the inner ring sleeve, and the hopper is threadedly connected to the threaded groove of the inner ring sleeve through the threaded teeth provided on the outer side of the bottom end. The hopper is located at the top of the grinding chamber, and the dispersing mechanism is located at the bottom of the hopper.

[0022] As an improvement, a circulation component is provided at the discharge port. The circulation component includes a connector, a conveying pipe, a circulation pipeline, and a valve. The connector is fixedly connected to the discharge port by bolts. One end of the conveying pipe is inserted into the connector. The circulation pipeline is located on the output path of the conveying pipe. The valve is located at the connection between the conveying pipe and the circulation pipeline, and the flow direction of the material is controlled by the valve.

[0023] The beneficial effects of this utility model are as follows:

[0024] (1) In this utility model, a dispersion mechanism is set on the basis of the existing glue mill structure. The dispersion mechanism is used to pre-disperse the large particles of powder material inside the hot melt adhesive. Then, the glue mill is used to shear and disperse the ultrafine particles and nano-scale materials inside the hot melt adhesive. This allows the glue mill to meet the dispersion of nano-materials while reducing the interference of large particles of powder on the shear dispersion of nano-materials in the glue mill, thereby improving the shear dispersion effect of the glue mill on nano-materials.

[0025] (2) In this utility model, a pressure plate is set on the upper part of the dispersion mesh of the dispersion mechanism. The hot melt adhesive is quickly squeezed through the dispersion mesh by the rotation of the pressure plate, so as to avoid the setting of the dispersion mesh affecting the flow of the hot melt adhesive in the glue mill and ensure the fluidity of the hot melt adhesive in the glue mill.

[0026] (3) In this utility model, the grinding stripes on the grinding body and the oblique stripes on the inner sidewall of the inner ring sleeve are used to grind the grinding area of ​​the material. When the grinding body and the inner ring sleeve move relative to each other, the material is subjected to shearing, squeezing and friction. During the grinding process, the material is subjected to complex forces in the grinding area. It is not only broken and refined, but also fully mixed and dispersed under the guidance of the stripes. This ensures that the material can be uniformly processed in the entire grinding area, thereby improving the consistency and stability of the product.

[0027] (4) The bottom of the grinding body in this utility model also generates thrust through the set dispersion blades, so that the ground material overcomes the resistance and possible adsorption force in the grinding area and moves smoothly to the discharge port, ensuring that the material can be discharged from the grinding machine continuously and stably, preventing material accumulation, thereby realizing continuous production and improving production efficiency.

[0028] (5) The present invention also has a circulation component that allows the material to be repeatedly circulated into the grinding mechanism for grinding, so that the material that has not been fully ground can re-enter the grinding zone to receive further grinding treatment until the required particle size is achieved. Through circulation, the material can be more evenly distributed in the grinding machine, ensuring that all materials receive the same degree of grinding effect, thereby improving the consistency and quality stability of the product.

[0029] (6) The present invention can precisely adjust the flow distribution of materials between the circulation pipe and the outlet according to actual production needs through the valve in the circulation component. When it is necessary to perform multiple circulation grinding of materials to achieve a higher grinding fineness, the valve can be closed to allow the materials to pass through the circulation pipe for circulation grinding. When the materials have reached the required grinding effect and need to be discharged in time, the valve can be opened to allow the materials to flow out smoothly.

[0030] (7) In this utility model, the width of the material grinding gap is adjusted by pressing the inner ring with the adjusting handle on the outer ring. When grinding different materials, the gap size can be precisely adjusted according to the characteristics of the material and the desired grinding effect, so that the material is ground just right and the uniformity and consistency of the product particle size can be guaranteed.

[0031] In summary, this utility model provides a circulating colloid mill that can more precisely control particle size and flexibly adjust the grinding process. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the grinding mechanism of this utility model. Figure 1 ;

[0034] Figure 3This is a schematic diagram of the grinding mechanism of this utility model. Figure 2 ;

[0035] Figure 4 This is a schematic diagram of the grinding head chamber structure of this utility model;

[0036] Figure 5 This is a schematic diagram of the internal structure of the drive motor of this utility model;

[0037] Figure 6 This is a schematic diagram of the grinding body structure of this utility model;

[0038] Figure 7 This is a schematic cross-sectional view of the present invention.

[0039] Figure 8 This is a schematic diagram of the inner ring structure of this utility model;

[0040] Figure 9 This is a schematic diagram of the outer ring structure of this utility model.

[0041] In the diagram: 1. Colloid mill, 10. Bolt, 11. Grinding chamber, 12. Grinding mechanism, 120. Grinding head chamber, 1200. Adjusting handle, 1202. Outer ring sleeve, 1204. Discharge port, 13. Grinding shaft, 131. Feeder, 132. Driven pulley, 14. Grinding body, 140. Feed trough, 141. Grinding stripes, 15. Inner ring sleeve, 150. Grinding gap, 151. Diagonal stripes, 16. Drive motor, 17. Dispersing blades, 161. Output shaft, 162. Drive pulley, 163. Belt, 2. Dispersing mechanism, 20. Connecting shaft, 21. Pressing plate, 22. Dispersing mesh, 3. Hopper, 4. Circulation assembly, 41. Connector, 42. Feed pipe, 43. Circulation pipe, 44. Valve. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] Example 1:

[0046] like Figures 1 to 9 As shown, a circulating colloid mill includes:

[0047] Colloid mill 1 and dispersion mechanism 2;

[0048] The colloid mill 1 includes a grinding chamber 11 and a grinding mechanism 12 disposed in the grinding chamber 11;

[0049] The dispersion mechanism 2 is disposed on the top of the grinding mechanism 12. The dispersion mechanism 2 is disposed at the feed inlet of the grinding chamber 11, and the dispersion mechanism 2 filters impurities in the colloid entering the grinding chamber 11.

[0050] The grinding mechanism 12 includes a grinding body 14 disposed on the top of the grinding shaft 13 and an inner ring sleeve 15 sleeved on the outside of the grinding body 14. The grinding body 14 is frustum-shaped and rotates synchronously with the grinding shaft 13. Grinding stripes 141 are provided on the outer side wall of the grinding body 14. The inner ring sleeve 15 is cylindrical and fixedly disposed. The inner side wall of the inner ring sleeve 15 is provided with oblique stripes 151 that correspond to and cooperate with the grinding stripes 141. A material grinding gap 150 is formed between the grinding body 14 and the inner ring sleeve 15.

[0051] It should be noted that the corresponding cooperation between the grinding stripes 141 and the oblique stripes 151 forms an interlaced shearing position. When the grinding body 14 rotates at high speed with the grinding shaft 13, the stripe structure causes the material to undergo high-intensity shearing, friction and impact in the material grinding gap, effectively breaking down colloidal particles and refining the particle size of the material.

[0052] The bottom of the grinding body 14 is also provided with several sets of dispersing blades 17, which are evenly distributed along the circumference of the grinding body 14 and are inclined.

[0053] It should be noted that the inclined dispersion blades 17 at the bottom of the grinding body 14 generate centrifugal force and axial thrust when the grinding shaft 13 rotates, which performs preliminary dispersion treatment on the material entering the grinding chamber 11 and avoids material accumulation.

[0054] The inner ring sleeve 15 is fitted with a grinding head chamber 120, and the grinding chamber 120 forms the grinding cavity 11. The inner ring sleeve 15 is detachably connected to the grinding head chamber 120. A discharge port 1204 is provided on one side of the bottom of the grinding head chamber 120, and the discharge port 1204 is connected to the material grinding gap 150.

[0055] The top of the outer wall of the grinding head chamber 120 is provided with a threaded groove, and the outer ring sleeve 1202 is fitted on the top of the grinding head chamber 120. The outer ring sleeve 1202 is connected to the threaded groove on the top of the grinding head chamber 120 by the threaded threads provided on the inner wall. The outer ring sleeve 1202 is symmetrically provided with adjusting handles 1200. The adjusting handles 1200 press the inner ring sleeve 15 to adjust the width of the material grinding gap 150.

[0056] It should be noted that by combining the squeezing action of the adjusting handle 1200, the material grinding gap 150 can be infinitely adjusted. This design can flexibly adjust the grinding force according to different material characteristics and production process requirements, ensuring the stability and controllability of the grinding effect and reducing the equipment's limitations on material adaptability.

[0057] The grinding body 14 has a downward-recessed feeding groove 140 at its top. A vertically arranged feeder 131 is installed in the feeding groove 140. The feeder 131 is arranged in the shape of a propeller blade and rotates with the grinding body 14.

[0058] It should be noted that the feeder 131 adopts a propeller blade structure. During the rotation with the grinding body 14, the material is quickly and stably conveyed downward to the grinding area by the principle of spiral lift. Compared with the traditional gravity feeding method, the propeller feeder can effectively avoid the problems of material accumulation and blockage. It is especially suitable for colloidal materials with poor flowability, ensuring the continuity and stability of the feeding process.

[0059] The top of the feeder 131 is provided with the dispersing mechanism 2, which includes a connecting shaft 20, a dispersing mesh 22 and several sets of pressing plates 21. The connecting shaft 20 is vertically connected to the top of the feeder 131, and the dispersing mesh 22 is horizontally arranged on the top of the connecting shaft 20. Several sets of pressing plates 21 are evenly distributed on the upper surface of the dispersing mesh 22 along the circumferential direction of the connecting shaft 20, and the pressing plates 21 are inclined.

[0060] It should be noted that the cooperative structure of the pressing plate 21 and the dispersing mesh 22 allows the material to pass through the mesh and continue flowing downwards after reaching the position of the dispersing mesh 22, due to the specific mesh size of the dispersing mesh 22. However, the dispersing mesh 22 rotates continuously with the grinding shaft 13, and the pressing plate 21 also continuously agitates the material on the dispersing mesh 22. Since the material passes through the dispersing mesh 22 in a process of dispersion and aggregation, large particles in the material, especially agglomerated large particles, will be broken up during the dispersion process and uniformly pre-dispersed through the mesh of the dispersing mesh 22. This allows the large particles in the material to be dispersed in advance. At the same time, the squeezing action of the pressing plate 21 on the material can further promote the material to pass through the dispersing mesh holes quickly, improving the flow efficiency.

[0061] The lower end of the grinding shaft 13 is equipped with a driven pulley 132. A drive motor 16 is provided on one side of the grinding shaft 13. The drive motor 16 is vertically installed through a base 160, and the end of the output shaft 161 of the drive motor 16 is connected to a drive pulley 162. A belt 163 is arranged around the drive pulley 162 and the driven pulley 132.

[0062] The inner sidewall of the inner ring sleeve 15 is provided with a screw groove at the top. The hopper 3 is threadedly connected to the screw groove of the inner ring sleeve 15 through the screw thread provided on the outer side of the bottom end. The hopper 3 is located at the top of the grinding chamber 11, and the dispersing mechanism 2 is located at the bottom of the hopper 3.

[0063] A circulation component 4 is provided at the discharge port 1204. The circulation component 4 includes a connector 41, a conveying pipe 42, a circulation pipe 43, and a valve 44. The connector 41 is fixedly connected to the discharge port 1204 by bolts 10. One end of the conveying pipe 42 is inserted into the connector 41. The circulation pipe 43 is located on the output path of the conveying pipe 42. The valve 44 is located at the connection between the conveying pipe 42 and the circulation pipe 43, and the flow direction of the material is controlled by the valve 44.

[0064] Circulating grinding process:

[0065] Material circulation path: The material enters the grinding chamber 11 through the hopper 3 and the dispersing mechanism 2. After the initial grinding is completed under the action of the grinding mechanism 12, it enters the circulation component 4 through the discharge port 1204. When the valve 44 opens the circulation channel, the material returns to the hopper 3 through the conveying pipe 42 and the circulation pipe 43, and is filtered and ground again to achieve multiple circulation grinding. This circulation design can significantly improve the fineness and uniformity of material grinding, and is especially suitable for application scenarios with strict requirements for the particle size distribution of the finished product.

[0066] Cycle number and discharge control: By adjusting the opening and closing of valve 44 and the diameter of circulation pipe 43, the number of material cycles and discharge flow can be precisely controlled. When the preset standard is reached, valve 44 opens the discharge channel and outputs the finished material.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating colloid mill, characterized in that, include: Colloid mill (1) and dispersion mechanism (2); The colloid mill (1) includes a grinding chamber (11) and a grinding mechanism (12) disposed in the grinding chamber (11). The dispersion mechanism (2) is located on the top of the grinding mechanism (12). The dispersion mechanism (2) is located at the feed inlet of the grinding chamber (11) and disperses the powder material entering the grinding chamber (11).

2. The circulating colloid mill according to claim 1, characterized in that: The grinding mechanism (12) includes a grinding body (14) disposed on the top of the grinding shaft (13) and an inner ring sleeve (15) sleeved on the outside of the grinding body (14). The grinding body (14) is frustum shaped and rotates synchronously with the grinding shaft (13). Grinding stripes (141) are provided on the outer side wall of the grinding body (14). The inner ring sleeve (15) is cylindrical and fixed. The inner side wall of the inner ring sleeve (15) is provided with oblique stripes (151) that correspond to and cooperate with the grinding stripes (141). A material grinding gap (150) is formed between the grinding body (14) and the inner ring sleeve (15).

3. The circulating colloid mill according to claim 2, characterized in that: The bottom of the grinding body (14) is also provided with several sets of dispersing blades (17), which are evenly distributed along the circumference of the grinding body (14) and are inclined.

4. A circulating colloid mill according to claim 2, characterized in that: The inner ring sleeve (15) is fitted with a grinding head chamber (120), and the grinding chamber (11) is formed inside the grinding head chamber (120). The inner ring sleeve (15) and the grinding head chamber (120) are detachably connected. A discharge port (1204) is provided on one side of the bottom of the grinding head chamber (120), and the discharge port (1204) is connected to the material grinding gap (150).

5. A circulating colloid mill according to claim 4, characterized in that: The outer wall of the grinding head chamber (120) is provided with a screw groove at the top. An outer ring sleeve (1202) is fitted on the top of the grinding head chamber (120). The outer ring sleeve (1202) is connected to the screw groove at the top of the grinding head chamber (120) by the screw threads provided on the inner wall. An adjusting handle (1200) is symmetrically inserted on the outer ring sleeve (1202). The adjusting handle (1200) presses the inner ring sleeve (15) to adjust the width of the material grinding gap (150).

6. A circulating colloid mill according to claim 2, characterized in that: The grinding body (14) has a downward recessed feeding groove (140) at the top. A vertically arranged feeder (131) is installed in the feeding groove (140). The feeder (131) is arranged in the shape of a propeller blade and rotates with the grinding body (14).

7. A circulating colloid mill according to claim 6, characterized in that: The top of the feeder (131) is provided with the dispersing mechanism (2), which includes a connecting shaft (20), a dispersing mesh (22) and several sets of pressing plates (21). The connecting shaft (20) is vertically connected to the top of the feeder (131), and the dispersing mesh (22) is horizontally arranged on the top of the connecting shaft (20). Several sets of pressing plates (21) are evenly distributed on the upper surface of the dispersing mesh (22) along the circumferential direction of the connecting shaft (20), and the pressing plates (21) are inclined.

8. A circulating colloid mill according to claim 2, characterized in that: The lower end of the grinding shaft (13) is equipped with a driven pulley (132). A drive motor (16) is provided on one side of the grinding shaft (13). The drive motor (16) is vertically installed on the base (160). The end of the output shaft (161) of the drive motor (16) is connected to the drive pulley (162). A belt (163) is arranged around the drive pulley (162) and the driven pulley (132).

9. A circulating colloid mill according to claim 2, characterized in that: The inner wall of the inner ring sleeve (15) is provided with a screw groove at the top. The hopper (3) is threadedly connected to the screw groove of the inner ring sleeve (15) through the screw thread provided on the outer side of the bottom end. The hopper (3) is located at the top of the grinding chamber (11), and the dispersing mechanism (2) is located at the bottom of the hopper (3).

10. A circulating colloid mill according to claim 4, characterized in that... ； A circulation component (4) is provided at the discharge port (1204). The circulation component (4) includes a connector (41), a conveying pipe (42), a circulation pipe (43), and a valve (44). The connector (41) is fixedly connected to the discharge port (1204) by bolts (10). One end of the conveying pipe (42) is inserted into the connector (41). The circulation pipe (43) is located on the output path of the conveying pipe (42). The valve (44) is located at the connection between the conveying pipe (42) and the circulation pipe (43). The flow direction of the material is controlled by the valve (44).

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