Composite raw material dispersing device

Abstract

The invention provides a composite raw material dispersing device. The composite raw material dispersing device comprises a stirring barrel and a stirring shaft, the feeding mechanism comprises a conical flow dividing cover fixed to the top of the stirring barrel, a central liquid material channel and a circumferential powder material channel, the central liquid material channel and the circumferential powder material channel are arranged on the conical flow dividing cover, and a circular seam discharging assembly is arranged at the bottom of the circumferential powder material channel; the rotor mechanism comprises a rotating rotor, a feeding channel arranged at the top of the rotating rotor and an internal screening cavity, and a screening plate and a screening channel are arranged in the screening cavity; the stator mechanism comprises a fixed stator, multiple layers of shearing teeth which are inserted in a staggered mode and do not make contact are arranged between the side face of the fixed stator and the rotating rotor, and sharp holes distributed in a staggered mode are formed between the bottom of the fixed stator and the rotating rotor. Through the multi-stage and multi-mode shearing action, the efficient, uniform and fine dispersion effect is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial stirring and dispersing equipment, in particular to a composite raw material dispersing device. Background Art

[0002] In the production process of plastic composite raw materials, liquid raw materials and powder raw materials need to be mixed and dispersed evenly to form a uniform suspension or slurry. This process requires equipment that can not only achieve macroscopic mixing, but also fully break up and wet the powder particles to avoid agglomeration, so as to achieve extremely high dispersion uniformity and stability.

[0003] Traditional dispersion equipment usually uses high-speed rotating impellers or toothed discs to break up clumps by generating strong shear force. However, such equipment has the following problems during use:

[0004] Single shearing path: The material usually only undergoes a one-time high-speed shearing in the dispersion disc area. For stubborn particles that have already formed, a single shearing may not be enough to completely break them up, resulting in limited dispersion fineness;

[0005] Dead zones exist in the flow field: Dead zones are prone to occur in traditional mixing barrels, and some materials may not be transported to the area with the strongest shear, resulting in uneven dispersion. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a composite raw material dispersing device, which realizes the premixing and orderly feeding of powder and liquid materials and effectively improves the material mixing and dispersing effect.

[0007] According to an embodiment of the present invention, there is provided a composite raw material dispersing device, comprising a stirring barrel, and a stirring shaft rotatably connected to the stirring barrel and coaxially extending into the stirring barrel, characterized in that it further comprises:

[0008] A feeding mechanism, comprising a conical diverter cover fixed to the top of the mixing barrel, a central liquid material channel and a circumferential powder material channel provided on the conical diverter cover, wherein the bottom of the circumferential powder material channel is provided with an annular seam discharge assembly;

[0009] A shearing and dispersing system, wherein the shearing and dispersing mechanism includes a rotor mechanism coaxially connected to the stirring shaft, and a stator mechanism connected to the stirring barrel and arranged around the rotor mechanism;

[0010] The rotor mechanism includes a rotating rotor, a feed channel arranged on the top of the rotating rotor, and a screening cavity arranged in the rotating rotor, a screening plate is arranged in the screening cavity, and a screening channel connected to the screening cavity is arranged on the side of the rotating rotor;

[0011] The stator mechanism includes a fixed stator, the side surface of the fixed stator is in clearance fit with the rotating rotor and multiple layers of staggered and non-contact shearing teeth are arranged between the two, and the bottom of the fixed stator is in clearance fit with the rotating rotor and staggered sharp holes are arranged between the two.

[0012] Preferably, the rotating rotor includes a conical body and a cylindrical body that are coaxially connected and arranged up and down, the screening plate and the screening material channel are arranged in the conical body, the gap between the fixed stator and the conical body gradually decreases from top to bottom, and the shearing teeth include preliminary cutting teeth arranged between the conical body and the fixed stator, and fine cutting teeth arranged between the cylindrical body and the fixed stator.

[0013] Further preferably, the sieve plate is a sieve with a conical structure, and the sieve material channel runs horizontally from the edge of the sieve plate to the outside.

[0014] Further preferably, a cover with an opening on one side for taking in materials is fixedly provided on the top of the feed channel.

[0015] Further preferably, a deflecting paddle is fixedly provided on the stirring shaft to drive the fluid to move downward, and the deflecting paddle is arranged above the feed channel.

[0016] Further preferably, the outer side surface of the fixed stator is a cylindrical surface, and the top of the fixed stator is provided with a funnel-shaped material collecting trough located above the feed channel.

[0017] Further preferably, a diversion hole is provided on the side wall of the material collecting trough and extends to the outside thereof, and the rotor mechanism further comprises a cylinder connected to the stirring shaft and arranged around the fixed stator, and a shear hole is provided on the cylinder.

[0018] Further preferably, the diverter hole is arranged obliquely downward from the inside to the outside, and the shear hole is arranged radially with its inner end located on the extension line of the diverter hole.

[0019] Further preferably, the cylinder is provided with spiral blades for driving the fluid to move upward, the bottom of the rotating rotor is fixedly connected to a rotating shaft passing through the fixed stator, and the rotating shaft is provided with diverter blades for driving the liquid to move outward.

[0020] Still further preferably, the bottom of the circumferential powder channel is provided with evenly distributed discharge holes, and the annular seam discharge assembly includes an annular baffle rotatably connected to the circumferential powder channel, and the annular baffle is provided with through holes corresponding to the discharge holes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] Orderly feeding and pre-mixing, through the design of conical diversion cover, central liquid channel and circumferential powder channel, realize the function of liquid being evenly scattered from the center and powder from all sides, so that the powder comes into contact with the rising liquid flow during the falling process, and is initially wetted, effectively avoiding powder agglomeration and floating.

[0023] Multi-stage high-efficiency shearing and dispersion: During primary screening and shearing, the mixed material is drawn into the rotor. After initial screening and filtering of large particles by the screening plate, it is ejected from the screening channel and immediately enters the primary tooth area with a gradually changing gap formed by the rotating rotor's frustum and the fixed stator for the first stage of coarse shearing. For fine shearing, the material then enters the fine tooth area formed by the cylindrical rotor and stator for even higher-precision fine shearing. Finally, the material passes through the sharp holes at the bottom of the rotor and stator, experiencing extremely high linear velocity shearing and impact, achieving ultra-fine dispersion.

[0024] Forced circulation has no dead angles. The combined design of baffle blades, spiral blades and diverter blades forms a strong three-dimensional circulation flow field from top to bottom, from inside to outside and then upward in the mixing barrel, ensuring that all materials can be repeatedly transported to the shear dispersion system for processing, completely eliminating mixing dead angles and ensuring uniform product quality.

[0025] Adjustable powder feeding and annular gap discharge components change the overlapping area of ​​the through hole and the discharge hole by rotating the annular baffle, thereby infinitely adjusting the width of the powder discharge annular gap to adapt to powder raw materials with different fluidity and different feeding rates, and are flexible and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the internal structure of a composite raw material dispersing device of the present invention.

[0027] Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0028] Figure 3 This is a schematic diagram of the coordinated structure of a fixed stator and a rotating rotor in a composite raw material dispersing device of the present invention.

[0029] Figure 4 The figure is a schematic diagram of the coordination structure between the fixed stator and the cylinder in a composite raw material dispersing device of the present invention.

[0030] In the above drawings: 1, mixing barrel; 2, mixing shaft; 201, deflector; 3, feeding mechanism; 301, diverter cover; 302, central liquid channel; 303, circumferential powder channel; 304, discharge hole; 310, annular gap discharge assembly; 311, annular baffle; 312, through hole; 4, rotor mechanism; 410, rotating rotor; 411, feeding channel; 412, frustum; 413, round Cylinder; 414, rotating shaft; 415, diverter blade; 416, cover; 420, screening cavity; 421, screening plate; 422, screening channel; 430, cylinder; 431, shearing hole; 432, spiral blade; 5, stator mechanism; 510, fixed stator; 511, sharp hole; 512, diverter hole; 513, material trough; 520, shearing teeth; 521, primary cutting teeth; 522, fine cutting teeth. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0032] The present invention provides an embodiment, such as Figure 1 As shown, a composite raw material dispersing device includes a mixing barrel 1, a mixing shaft 2 rotatably connected to the mixing barrel 1 and coaxially extending into the mixing barrel 1, the mixing shaft 2 being driven to rotate by a motor (not shown in the figure), and the mixing shaft 2 being rotatably connected to the top of the mixing barrel 1 via a bearing seat;

[0033] A feeding mechanism 3, comprising a conical diverter cover 301 fixed to the top of the mixing barrel 1, a central liquid material channel 302 and a circumferential powder material channel 303 provided on the conical diverter cover 301, wherein the central liquid material channel 302 is used to inject liquid raw materials, and the circumferential powder material channel 303 is used to receive and transport powdered raw materials. A circumferential seam discharge assembly 310 is provided at the bottom of the circumferential powder material channel 303;

[0034] Specifically, such as Figure 2 As shown, the bottom of the circumferential powder channel 303 is provided with discharge holes 304 evenly distributed along the circumference, and the annular gap discharge assembly 310 includes an annular baffle 311 rotatably connected to the circumferential powder channel 303. The annular baffle 311 is provided with through holes 312 corresponding to the discharge holes 304. By rotating the annular baffle 311, the overlap between the through holes 312 and the discharge holes 304 can be adjusted, thereby controlling the width of the annular gap through which the powder falls.

[0035] A shearing and dispersing system, wherein the shearing and dispersing mechanism includes a rotor mechanism 4 coaxially connected to the stirring shaft 2, and a stator mechanism 5 connected to the stirring barrel 1 and arranged around the rotor mechanism 4;

[0036] The rotor mechanism 4 includes a rotating rotor 410, a feed channel 411 provided on the top of the rotating rotor 410, a screening cavity 420 provided in the rotating rotor 410, a screening plate 421 provided in the screening cavity 420, and a screening channel 422 provided on the side of the rotating rotor 410 and communicating with the screening cavity 420;

[0037] The stator mechanism 5 includes a fixed stator 510. The side of the fixed stator 510 is in clearance fit with the rotating rotor 410, and multiple layers of staggered and non-contact shear teeth 520 are provided between the two. The bottom of the fixed stator 510 is in clearance fit with the rotating rotor 410, and staggered sharp holes 511 are provided between the two.

[0038] Specifically, such as Figure 3 As shown, the rotating rotor 410 includes a conical body 412 and a cylindrical body 413 that are coaxially connected and arranged up and down. The screening plate 421 and the screening material channel 422 are arranged in the conical body 412. The gap between the fixed stator 510 and the conical body 412 gradually decreases from top to bottom. The shearing teeth 520 include preliminary cutting teeth 521 arranged between the conical body 412 and the fixed stator 510, and fine cutting teeth 522 arranged between the cylindrical body 413 and the fixed stator 510.

[0039] In order to improve the effect of the screening plate 421 on the material, in a further embodiment, the screening plate 421 is a screen with a conical structure, and the screening channel 422 runs horizontally from the edge of the screening plate 421 to the outside;

[0040] In order to facilitate the rapid entry of the material into the screening cavity 420, in a further embodiment, a cover 416 with one side opening for taking in the material is fixedly provided on the top of the feed channel 411, and is used to "take in" the material during high-speed rotation;

[0041] In order to facilitate the downward movement of the material into the feed channel 411, in a further embodiment, a deflector 201 is fixed on the stirring shaft 2 to drive the fluid to move downward, and the deflector 201 is arranged above the feed channel 411;

[0042] In order to facilitate the material to enter the feed channel 411 under the action of the deflector paddle 201, in a further embodiment, the outer side surface of the fixed stator 510 is a cylindrical surface, and the top of the fixed stator 510 is provided with a funnel-shaped material collecting trough 513 located above the feed channel 411;

[0043] In order to provide a multi-mode shearing effect on the material, in a further embodiment, a diversion hole 512 is provided on the side wall of the material collecting trough 513 and extends to the outside thereof. The rotor mechanism 4 further includes a cylinder 430 connected to the stirring shaft 2 and arranged around the fixed stator 510. The cylinder 430 is provided with a shearing hole 431.

[0044] In order to ensure the shearing effect between the shear hole 431 and the diverter hole 512, in a further embodiment, the diverter hole 512 is arranged downwardly from the inside to the outside, and the shear hole 431 is arranged radially and its inner end is located on the extension line of the diverter hole 512;

[0045] In order to facilitate the material cycle shearing, in a further embodiment, as Figure 4 As shown, the cylinder 430 is provided with spiral blades 432 for driving the fluid to move upward, the bottom of the rotating rotor 410 is fixedly connected to a rotating shaft 414 that passes through the fixed stator 510, and the rotating shaft 414 is provided with diverter blades 415 for driving the liquid to move outward.

[0046] During operation, liquid raw materials are injected from the central liquid material channel 302, and powder raw materials are added from the circumferential powder material channel 303; by adjusting the annular baffle 311, the powder falls in a uniform annular curtain shape; the falling powder is initially wetted by the liquid flow rising from the bottom of the mixing barrel 1;

[0047] The preliminarily mixed material flows downward under the drive of the deflector blade 201, and a part of it is sucked into the collecting trough 513 on the top of the rotating rotor 410 and enters the screening cavity 420 inside the rotating rotor 410 through the feeding channel 411; the material passes through the screening plate 421 under the action of centrifugal force, and the qualified material passes through the screening plate 421 and enters the screening cavity 420. As the feeding channel 411 continuously absorbs the material, the material in the screening cavity 420 is squeezed out from the sharp hole 511 and is affected by the rotating rotor 410 and the fixed stator 511. 0. The shearing effect of the sharp holes 511 on the upper surface of the rotor 410 causes large particles to be ejected at high speed from the screening channel 422 at the edge. The ejected materials first enter the area of ​​the primary cutting teeth 521 between the frustum 412 of the rotating rotor 410 and the fixed stator 510, where they are subjected to the first strong shearing force. The materials then move downward and enter the area of ​​the fine cutting teeth 522 between the cylindrical body 413 and the fixed stator 510, where they are subjected to even finer shearing. Finally, the materials pass through the narrow gap with the sharp holes 511 at the bottom, where they are subjected to the ultimate high shearing and impact, and are fully dispersed.

[0048] Another part of the material is ejected from the diverter hole 512 and directly hits the shear hole 431 of the barrel 430 at high speed for shearing; then, the side material moves upward under the action of the spiral blade 432 and is pressed downward again at the deflector paddle 201, forming a strong forced circulation, and the material at the bottom flows out from the bottom of the rotor and is thrown to the side by the diverter blade 415, participating in the macro mixing of the entire barrel.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A composite raw material dispersing device, comprising a stirring barrel (1), a stirring shaft (2) rotatably connected to the stirring barrel (1) and coaxially extending into the stirring barrel (1), characterized in that: Also includes: A feeding mechanism (3), the feeding mechanism (3) comprising a conical diverter cover (301) fixed to the top of the mixing barrel (1), a central liquid material channel (302) provided on the conical diverter cover (301), and a circumferential powder material channel (303), wherein a circumferential seam discharge assembly (310) is provided at the bottom of the circumferential powder material channel (303); A shearing and dispersing system, wherein the shearing and dispersing mechanism comprises a rotor mechanism (4) coaxially connected to the stirring shaft (2), and a stator mechanism (5) connected to the stirring barrel (1) and arranged around the rotor mechanism (4); The rotor mechanism (4) comprises a rotating rotor (410), a feed channel (411) arranged on the top of the rotating rotor (410), and a screening cavity (420) arranged in the rotating rotor (410); a screening plate (421) is provided in the screening cavity (420); and a screening channel (422) communicating with the screening cavity (420) is provided on the side of the rotating rotor (410); The stator mechanism (5) comprises a fixed stator (510), the side surface of the fixed stator (510) is clearance-matched with the rotating rotor (410), and multiple layers of staggered and non-contact shearing teeth (520) are provided between the two; the bottom of the fixed stator (510) is clearance-matched with the rotating rotor (410), and staggered sharp holes (511) are provided between the two.

2. A composite raw material dispersing device according to claim 1, characterized in that: The rotating rotor (410) includes a truncated cone (412) and a cylindrical body (413) that are coaxially connected and arranged in an upper and lower position. The screening plate (421) and the screening material channel (422) are arranged in the truncated cone (412). The gap between the fixed stator (510) and the truncated cone (412) gradually decreases from top to bottom. The shearing teeth (520) include preliminary cutting teeth (521) arranged between the truncated cone (412) and the fixed stator (510) and fine cutting teeth (522) arranged between the cylindrical body (413) and the fixed stator (510).

3. A composite raw material dispersing device according to claim 2, characterized in that: The screening plate (421) is a screen with a conical structure, and the screening material channel (422) runs horizontally from the edge of the screening plate (421) to the outside.

4. A composite raw material dispersing device according to claim 1, characterized in that: A cover (416) with an opening on one side and used for taking in materials is fixedly provided on the top of the feed channel (411).

5. A composite raw material dispersing device according to claim 4, characterized in that: A deflecting paddle (201) for driving the fluid to move downward is fixedly provided on the stirring shaft (2), and the deflecting paddle (201) is arranged above the feed channel (411).

6. The composite raw material dispersing device according to claim 1, characterized in that: The outer side surface of the fixed stator (510) is a cylindrical surface, and the top of the fixed stator (510) is provided with a funnel-shaped material collecting trough (513) located above the feeding channel (411).

7. A composite raw material dispersing device according to claim 6, characterized in that: A diversion hole (512) is provided on the side wall of the material collecting trough (513) and extends to the outside thereof. The rotor mechanism (4) further comprises a cylinder (430) connected to the stirring shaft (2) and arranged around the fixed stator (510). The cylinder (430) is provided with a shearing hole (431).

8. A composite raw material dispersing device according to claim 7, characterized in that: The diverter hole (512) is arranged obliquely downward from the inside to the outside, and the shear hole (431) is arranged radially, with its inner end located on the extension line of the diverter hole (512).

9. The composite raw material dispersing device according to claim 7, characterized in that: The cylinder (430) is provided with a spiral blade (432) for driving the fluid to move upward, and the bottom of the rotating rotor (410) is fixedly connected to a rotating shaft (414) that passes through the fixed stator (510), and the rotating shaft (414) is provided with a diverter blade (415) for driving the liquid to move outward.

10. A composite raw material dispersing device according to any one of claims 1 to 9, characterized in that: The bottom of the circumferential powder channel (303) is provided with evenly distributed discharge holes (304), and the annular seam discharge assembly (310) includes an annular baffle (311) rotatably connected to the circumferential powder channel (303), and the annular baffle (311) is provided with through holes (312) corresponding to the discharge holes (304).

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