Mixed-flow type shearing, homogenizing and mixing device

Abstract

The invention provides a mixed-flow type shearing, homogenizing and mixing device, and belongs to the technical field of mixing devices. The mixed-flow type shearing, homogenizing and mixing device comprises a core shaft, a machine body and a homogenizing and shearing assembly, the core shaft is sleeved with the homogenizing and shearing assembly, a first containing space is formed in the machine body, and the homogenizing and shearing assembly is contained in the first containing space; the machine body is provided with a feeding port and a discharging port, and the first containing space is communicated with the outside through the feeding port and the discharging port. According to the mixed-flow type shearing, homogenizing and mixing device, on the basis of the existing metal material and machining level, similar high-strength dispersing and mixing effects are achieved while large-scale equipment and large-scale treatment capacity are achieved, and meanwhile the application range of materials is wider.

Description

Technical Field

[0001] The invention relates to the technical field of mixing devices, in particular to a mixed flow shearing homogenizing mixing device. Background Art

[0002] For heterogeneous liquid-liquid and liquid-solid multiphase dispersion systems of low and medium viscosity fluids, the uniformity of the mixture requires not only uniform distribution of the dispersed phase, but also further micronization of the dispersed phase to make it more stable and more detailed. This requires the use of a shear homogenizer mixer with a strong stirring function. Summary of the invention

[0003] In view of this, the present invention provides a mixed flow shear homogenizing mixing device, which, based on the existing metal materials and mechanical processing levels, achieves similar high-intensity dispersion and mixing effects while increasing the size of the equipment and the scale of the processing volume. At the same time, it has a wider range of applicability to materials, making it more suitable for practical use.

[0004] In order to achieve the above object, the technical solution of the mixed flow shear homogenizing mixing device provided by the present invention is as follows:

[0005] The mixed flow shearing homogenizing mixing device provided by the present invention comprises a core shaft (1), a body (18), and a multi-stage homogenizing shearing component.

[0006] The multi-stage homogenizing shearing assembly is sleeved on the core shaft (1).

[0007] A first accommodating space is provided inside the machine body (18), and the multi-stage homogenizing shearing assembly is accommodated in the first accommodating space;

[0008] The machine body (18) is provided with a feed inlet and a discharge outlet, and the first accommodating space is connected to the outside through the feed inlet and the discharge outlet.

[0009] The mixed flow shearing homogenizing mixing device provided by the present invention can also be further implemented by adopting the following technical measures.

[0010] Preferably, the body (18) comprises an axial side wall, a first body end cover and a second body end cover,

[0011] The first body end cover and the second body end cover respectively close the axial side wall at two radial ends of the axial side wall, so that the first accommodating space is formed between the axial side wall, the first body end cover and the second body end cover;

[0012] The first body end cover is provided with a first through hole, and the second body end cover is provided with a second through hole. The first through hole and the second through hole are arranged at corresponding positions, and the core shaft passes through the first through hole and the second through hole respectively.

[0013] Preferably, the mixed flow shear homogenizing mixing device further comprises a first sealing mechanism and a second sealing mechanism.

[0014] The first sealing mechanism is arranged between the core shaft (1) and the first machine body end cover;

[0015] The second sealing mechanism is arranged between the core shaft (1) and the second machine body end cover;

[0016] The first sealing mechanism is used to seal the gap between the core shaft (1) and the first machine body end cover, and the second sealing mechanism is used to seal the gap between the core shaft (1) and the first machine body end cover, so that the first accommodating space forms a sealed first accommodating space except that it is connected to the outside through the feed port and the discharge port.

[0017] Preferably, the mixed flow shear homogenizing mixing device further comprises a feed pipe (21) and a discharge pipe (22).

[0018] The inner diameter of the feed pipe (21) is matched to the diameter of the feed port, and the feed pipe (21) is fixedly arranged at the feed port;

[0019] The inner diameter of the discharge pipe (21) is matched to the diameter of the discharge port, and the discharge pipe (22) is fixedly arranged at the discharge port.

[0020] Preferably, a jacket cylinder (15) is provided on the axial side wall.

[0021] The jacket cylinder (15) is arranged inside the axial side wall along the annular direction of the axial side wall, so that the jacket cylinder (15) forms an annular storage space.

[0022] The annular storage space is provided with a first through hole and a second through hole, so that the annular storage space is connected with the outside through the first through hole and the second through hole to realize the entry and exit of heat medium.

[0023] Preferably, the mixed flow shear homogenizing mixing device further comprises a heat medium inlet pipe (24) and a heat medium outlet pipe (23).

[0024] The inner diameter of the heat medium inlet pipe (24) is matched with the diameter of the first through hole, and the heat medium inlet pipe (24) is fixedly arranged in the first through hole;

[0025] The inner diameter of the heat medium outlet pipe (23) is matched to the diameter of the second through hole, and the heat medium outlet pipe (23) is fixedly arranged in the second through hole.

[0026] Preferably, the first through hole is arranged at the bottom of the annular storage space, and the second through hole is arranged at the top of the annular storage space.

[0027] Preferably, the homogenizing shearing assembly comprises a plurality of turbines (12),

[0028] The plurality of turbines (12) are respectively axially sleeved on the core shaft (1) through their core holes.

[0029] Preferably, the turbine (12) is a semi-open hinged blade turbine, each of the semi-open hinged blade turbines has 3 to 6 hinged blades, and the angle of the hinged blades is 10° to 60°;

[0030] The semi-open folding blade turbine (12) is provided with an annular wheel disc on the material inlet side, the annular wheel disc is fixedly connected to the blades of the semi-open folding blade turbine (12), the outer diameter of the annular wheel disc is the same as the outer diameter of the semi-open folding blade turbine, and the first accommodating space is divided into multiple levels of sub-accommodating spaces by the annular wheel disc.

[0031] Preferably, the blade diameter of the turbine (12) is adapted to the inner diameter of the first accommodating space.

[0032] Preferably, the mixed flow shearing homogenizing mixing device further comprises a wear-resistant bushing (11),

[0033] The wear-resistant bushing (11) is arranged between the periphery of the blades of the turbine (12) and the inner wall of the machine body (18).

[0034] Preferably, a circle of saw teeth is evenly distributed on the inner wall of the wear-resistant bushing (11), and the shape of the saw teeth is selected from one or more of the shapes including semicircle, oblique triangle, and rectangle.

[0035] Preferably, the mixed flow shear homogenizing mixing device is characterized by further comprising a plurality of injection baffles (13),

[0036] The number of the injection baffles (13) is the same as the number of the turbines (12),

[0037] The injection baffle (13) is fixedly arranged on the inner wall of the machine body (18) in the radial direction, and the injection baffle (13) is close to the discharge side of the turbine (12), so that the turbine (12), the wear-resistant bushing (11) and the close injection baffle (13) form a group of homogenizing shearing components.

[0038] Preferably, the injection baffle (13) is provided with circular holes or strip holes of different sizes.

[0039] Preferably, the mixed flow shear homogenizing mixing device further comprises a distance ring (14),

[0040] The distance ring (14) is fixedly arranged along the circumferential direction of the inner wall of the machine body (18) between the front group of injection baffles (13) and the rear group of wear-resistant bushings (11).

[0041] Preferably, the mixed flow shearing homogenizing mixing device further comprises a crushing and pressing wheel (8),

[0042] The crushing and pressing wheel (8) is fixedly sleeved on the core shaft (1), and the position of the blades of the crushing and pressing wheel (8) corresponds to the position of the feed inlet.

[0043] Preferably, the crushing and pressing wheel (8) is a semi-open pressing impeller, and the number of blades of the crushing and pressing wheel (8) is 2-6;

[0044] The wheel disc of the semi-open press-in impeller is arranged on one side of the first sealing mechanism, the auxiliary impeller is arranged on one side of the wheel disc on the first sealing mechanism side, and the other side of the wheel disc is press-in blades.

[0045] Preferably, the mixed flow shearing homogenizing mixing device further comprises an impeller (17) at the discharge end.

[0046] The position of the impeller (17) at the discharge end corresponds to the position of the discharge port.

[0047] Preferably, the impeller at the discharge end is a semi-open suction impeller, and the number of blades of the impeller at the discharge end is 2-6;

[0048] The wheel disc of the semi-open suction impeller is located on one side of the second sealing mechanism, an auxiliary impeller is arranged on one side of the second sealing mechanism of the wheel disc, and the other side of the wheel disc is a suction blade.

[0049] Preferably, the mixed flow shear homogenizing mixing device further comprises a first bearing box and a second bearing box.

[0050] The first bearing box is arranged on the outer side of the first machine body end cover, and the second bearing box is arranged on the outer side of the second machine body end cover.

[0051] The core shaft (1) passes through the bearing hole in the first bearing box, the first machine body end cover, the second machine body end cover, and the bearing hole in the second bearing box in sequence.

[0052] Preferably, the core shaft (1) is provided with a first free end on the outer side of the first bearing box, and the output shaft of the rotary power driving member is fixedly connected to the first free end.

[0053] Preferably, the mixed flow shear homogenizing mixing device further comprises a bearing box end cover,

[0054] The core shaft (1) is provided with a second free end on the outer side of the second bearing box.

[0055] The second free end is enclosed by the bearing housing end cover.

[0056] As a preference,

[0057] The first bearing box is provided with a first cooling accommodating space on the outer periphery of the bearing.

[0058] The second bearing box is provided with a second cooling accommodating space on the outer periphery of the bearing.

[0059] The first cooling accommodating space and the second cooling accommodating space are filled with refrigerant.

[0060] The homogenizer with a rotor-stator structure in the prior art relies on the small gap between the rotor and the stator to perform mixed flow strong shearing, and the gap between the rotor and the stator has a decisive influence on the mixing effect. The mixed flow shearing homogenizing mixing device provided by the present invention is insensitive to the rotor-stator gap, and relies on the high-speed radial speed and circumferential speed formed by the folding blade turbine on the material, which forms strong collision, crushing, grinding, mechanical shearing, hydraulic shearing, high-frequency vibration, turbulence and other effects with the wear-resistant bushing. Strong swirl and eddy current can be formed between every two folding blades, so that the above effects are repeated. At the same time, the folding blade turbine causes the material to form an axial flow, and when passing through the injection plate, injection shear and cavitation effects are formed. A small amount of unevenly dispersed and mixed materials in this stage of homogenization chamber are macroscopically mixed in front of the folding blade turbine disc. The material enters the next stage of homogenization chamber in the form of swirl as the disc rotates to continue the next round of strong comprehensive dispersion. After passing through multiple stages of homogenization chambers, the dispersion and mixing effects required by the process are finally achieved.

[0061] The gap between the rotor and stator of the homogenizer with a rotor-stator structure in the prior art is difficult to adjust. In the shear homogenizing chamber of the mixed-flow shear homogenizing mixing device provided by the present invention, the axial gap between the rotating folding blade turbine and the stationary wear-resistant bushing, the injection plate, and the folding blade turbine can be adjusted by replacing the wear-resistant bushing and the spacing sleeve. The radial gap between the folding blade turbine and the wear-resistant bushing in the shear homogenizing chamber is also adjustable to meet the needs of different materials, thereby greatly enhancing the adaptability of the mixed-flow shear homogenizing mixing device of the present invention to materials.

[0062] In the shear homogenization chamber of the mixed flow shear homogenization mixing device provided by the present invention, the material flows axially as a whole, the folding blade turbine is in a good stress state and has small deformation, the main shaft is supported at both ends, the stress is uniform, and it can run stably for a long time. At the same time, the manufacturing and processing difficulty is small, the operation is stable, and it can be large-scaled.

[0063] The crushing and pressing wheel of the feed chamber of the mixed flow shear homogenizing mixing device provided by the present invention can effectively reduce the occurrence of cavitation, and the impeller at the discharge end of the discharge chamber can effectively increase the pressure head of the fluid, thereby eliminating the configuration of equipment and pipelines such as self-priming pumps and material conveying pumps in the process system, effectively reducing investment and operating costs.

[0064] The body of the mixed flow shearing homogenizing mixing device provided by the present invention can be optionally in the form of a jacket to achieve heating or heat removal of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0066] Attached Figure 1 A schematic diagram of the overall structure of a mixed flow shearing homogenizing mixing device provided in an embodiment of the present invention;

[0067] Attached Figure 2 Wear-resistant bushing structure related to the mixed flow shear homogenizing mixing device provided in the embodiment of the present invention Figure 1 .

[0068] Attached Figure 3 Wear-resistant bushing structure related to the mixed flow shear homogenizing mixing device provided in the embodiment of the present invention Figure 2 .

[0069] Attached Figure 4 The opening structure of the injection baffle member involved in the mixed flow shear homogenization mixing device provided in the embodiment of the present invention Figure 1 .

[0070] Attached Figure 5 The opening structure of the injection baffle member involved in the mixed flow shear homogenization mixing device provided in the embodiment of the present invention Figure 2 ;

[0071] Attached Figure 6 A cross-sectional view of a turbine in a typical direction involved in a mixed flow shear homogenizing mixing device provided in an embodiment of the present invention;

[0072] Attached Figure 7 A view showing another typical direction of a turbine involved in the mixed flow shear homogenizing mixing device provided in an embodiment of the present invention.

[0073] Description of reference numerals:

[0074] 1. Mandrel; 2. Bearing box cover; 3. Bearing box; 4. Cooling accommodation space; 5. Drive end bearing; 6. First sealing mechanism; 7. Machine body end cover; 8. Crushing and pressing wheel; 9. Bushing; 11. Wear-resistant bushing; 12. Turbine; 13. Injection spacer; 14. Distance ring; 15. Jacketed cylinder; 16. Pressing sleeve; 17. Discharge end impeller; 18. Machine body; 19. Second end sealing mechanism; 20. Passive end bearing; 21. Feed pipe; 22. Discharge pipe; 23. Heat medium outlet pipe; 24. Heat medium inlet pipe. DETAILED DESCRIPTION

[0075] The present invention provides a mixed flow shear homogenizing mixing device, which, based on the existing metal material and mechanical processing level, achieves similar high-intensity dispersion and mixing effects while increasing the size of the equipment and the scale of the processing volume, and has a wider range of application for materials, thus being more suitable for practical use.

[0076] The main structure of the current shear homogenizing mixer is basically a stator-rotor system, which uses the shearing effect between the blades or comb teeth of the high-speed rotating rotor and the corresponding teeth on the stator to crush the dispersed phase in the fluid and distribute it to another continuous phase efficiently, quickly and evenly. Under normal circumstances, the dispersed phase and the continuous phase are immiscible, and the difficulty of homogenization is different. Therefore, there are single-layer and multi-layer and single-stage and multi-stage stators and rotors.

[0077] In the prior art, there is a split emulsifier, whose homogenizing unit is characterized in that the stator-rotor assembly is a three-stage multi-layer stator-rotor assembly, which at least includes a first-layer stator-rotor assembly, a second-layer stator-rotor assembly, and a third-layer stator-rotor assembly arranged in sequence along the material flow direction from the feed port to the discharge port of the working chamber. The material flow direction is axial feed and radial discharge, and the shaft is cantilevered.

[0078] In the prior art, there is also a homogenizing pump, whose technical solution includes a rotor and a stator that cooperate with each other, and the rotor and the stator both include a base, and at least one layer of rotor gear rings is protruding from the base of the rotor, and at least one layer of stator gear rings is protruding from the base of the stator, wherein the rotor gear rings and / or the stator gear rings are collectively detachably connected.

[0079] There is also a homogenizer in the prior art, including a matching rotor and a stator, the rotor including a dispersion disc, the dispersion disc facing the stator is provided with a moving toothed ring, the stator including a connecting disc, the connecting disc facing the dispersion disc is provided with a fixed toothed ring; the moving toothed ring is composed of a plurality of turbine stirring blades, there is a spacing between two adjacent turbine stirring blades to form a turbine discharge port, the blade outlet angle of the turbine stirring blade is an obtuse angle; the fixed toothed ring is composed of a plurality of fixed stirring teeth.

[0080] The above stator and rotor structures have been widely used due to their good dispersion and mixing effects, but they also have the following shortcomings:

[0081] 1) The gap between the stator and rotor of the high-speed shearing mechanism is very small, and the coaxiality requirement is very high; and when running at high speed, the rotor comb teeth are subjected to very large centrifugal force. Due to the limitations of domestic metal materials and processing technology, it is difficult to ensure the radial deformation of the comb teeth under long-term operation, so that the rotor and stator are quickly damaged, and it is difficult to achieve the ideal small gap between the rotor and the stator, affecting the mixing and dispersion effect.

[0082] 2) Most of the main shafts of shear homogenizing mixers are cantilever type, so the rotor and stator generally do not exceed three layers, the number of stages does not exceed 3, and the rotor diameter is difficult to enlarge, otherwise the rigidity of the high-speed rotating main shaft is difficult to ensure, and any slight vibration during operation will cause damage to the rotor and stator.

[0083] 3) When the material viscosity is high, in order to ensure the mixing and dispersion effect, the relative gap between the rotor and the stator is required to be smaller, which makes processing and manufacturing difficult.

[0084] 4) Due to the limitations of the above reasons, it is difficult to further increase the relative speed of the rotor and stator of the shear homogenizing mixer, and it is difficult to further enlarge the rotor and stator diameter, resulting in large differences in the shearing, crushing and emulsification effects on different materials.

[0085] 5) Since the material needs to pass through the narrow comb groove, the liquid flow rate is too high when the processing volume is large, resulting in a large pressure drop, and some materials are discharged from the homogenizer without being fully mixed and dispersed, resulting in the dispersion of the liquid not meeting the requirements.

[0086] 6) The rotor-stator structure is not suitable for situations with higher viscosity, larger solid content, or larger solid particles.

[0087] In order to solve the above technical problems, the mixed flow shearing homogenizing mixer proposed in the present invention has a dispersion and mixing mechanism and a homogenizing structure that are different from those of the existing shearing homogenizing mixers.

[0088] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of a mixed flow shear homogenizing mixing device proposed by the present invention, its specific implementation, structure, features and effects, in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0089] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B. Specifically, it is understood that: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may be met.

[0090] See attached Figure 1 -Attached Figure 5 The technical solution of the mixed flow shear homogenizing mixing device provided in the embodiment of the present invention is as follows:

[0091] The mixed flow shear homogenizing mixing device provided in the embodiment of the present invention comprises a core shaft 1, a body 18, and a multi-stage homogenizing shearing assembly. The homogenizing shearing assembly is sleeved on the core shaft 1, and a first accommodating space is provided inside the body 18, and the multi-stage homogenizing shearing assembly is accommodated in the first accommodating space; a feed inlet and a discharge port are provided on the body 18, and the first accommodating space is connected to the outside through the feed inlet and the discharge port. In this case, the material enters the first accommodating space through the feed inlet, and is homogenized and mixed by the multi-stage homogenizing shearing assembly, and the dispersion and mixing effects are ideal.

[0092] The body 18 includes an axial side wall, a first body end cover and a second body end cover. The first body end cover and the second body end cover respectively close the axial side wall at two radial ends of the axial side wall, so that a first accommodation space is formed between the axial side wall, the first body end cover and the second body end cover; a first through hole is provided on the first body end cover, and a second through hole is provided on the second body end cover. The first through hole and the second through hole are provided at corresponding positions, and the core shaft passes through the first through hole and the second through hole respectively. In this case, the composition of the body 18 is simple and easy to implement.

[0093] Among them, the mixed-flow shear homogenizing mixing device also includes a first sealing mechanism and a second sealing mechanism. The first sealing mechanism is arranged between the core shaft 1 and the first body end cover; the second sealing mechanism is arranged between the core shaft 1 and the second body end cover; the first sealing mechanism is used to block the gap between the core shaft 1 and the first body end cover, and the second sealing mechanism is used to block the gap between the core shaft 1 and the first body end cover, so that the first accommodating space forms a sealed first accommodating space except for being connected to the outside world through the feed port and the discharge port. In this case, the first accommodating space is sealed, which can prevent the fluid and semi-fluid materials in the first accommodating space from leaking and corroding the body and parts, thereby improving the service life of the mixed-flow shear homogenizing mixing device provided in the embodiment of the present invention.

[0094] The mixed flow shear homogenizing mixing device further includes a feed pipe 21 and a discharge pipe 22. The inner diameter of the feed pipe 21 matches the diameter of the feed port, and the feed pipe 21 is fixedly arranged at the feed port; the inner diameter of the discharge pipe 21 matches the diameter of the discharge port, and the discharge pipe 22 is fixedly arranged at the discharge port. In this case, it is convenient for fluid and semi-fluid materials to enter and exit.

[0095] The axial side wall is provided with a jacket cylinder 15. The jacket cylinder 15 is arranged inside the axial side wall along the annular direction of the axial side wall, so that the jacket cylinder 15 forms an annular storage space, and the annular storage space is provided with a first through hole and a second through hole to the outside, so that the annular storage space is connected with the outside through the first through hole and the second through hole to realize the entry and exit of the heat medium. In this case, it is convenient to heat the fluid and semi-fluid materials in the first accommodating space.

[0096] The mixed flow shear homogenizing mixing device further includes a heat medium inlet pipe 24 and a heat medium outlet pipe 23. The inner diameter of the heat medium inlet pipe 24 matches the diameter of the first through hole, and the heat medium inlet pipe 24 is fixedly arranged at the first through hole; the inner diameter of the heat medium outlet pipe 23 matches the diameter of the second through hole, and the heat medium outlet pipe 23 is fixedly arranged at the second through hole. In this case, it is convenient for the heat medium to enter and exit the annular storage space.

[0097] The first through hole is arranged at the bottom of the annular storage space, and the second through hole is arranged at the top of the annular storage space. In this case, the time that the heat medium stays in the annular storage space can be extended, so that the heat medium can better heat the material in the first storage space and save energy.

[0098] Among them, the homogenizing shearing assembly includes a plurality of turbines 12. The plurality of turbines 12 are axially sleeved on the core shaft 1 through their core holes. In this case, as the material moves axially from one end close to the feed port to one end close to the discharge port, the material can be sheared once each time it passes through a turbine 12, and the homogenizing and mixing effects are enhanced. In this embodiment, the turbine 12 is a semi-open folding blade turbine, each of which has 3-6 folding blades and a folding blade angle of 10°-60°; a circular wheel disc is provided on the inlet side of the semi-open folding blade turbine 12, and the circular wheel disc is fixedly connected to the blades of the semi-open folding blade turbine 12, and the outer diameter of the circular wheel disc is the same as the outer diameter of the semi-open folding blade turbine, and the first accommodating space is divided into multiple sub-accommodating spaces by the circular wheel disc.

[0099] The blade diameter of the turbine 12 is adapted to the inner diameter of the first accommodating space. In this case, the material flowing through the first accommodating space needs to pass through the blades of multiple turbines 12 in sequence before axial movement, which can reduce the missed material that has not been sheared, and achieve better homogenization and shearing effects.

[0100] The mixed flow shearing homogenizing mixing device further comprises a wear-resistant bushing 11. The wear-resistant bushing 11 is arranged between the periphery of the blades of the turbine 12 and the inner wall of the body 18. In this case, the blade wear of the turbine 12 can be reduced and the service life of the turbine 12 can be increased.

[0101] The inner wall of the wear-resistant bushing 11 is evenly distributed with a circle of saw teeth, and the saw teeth are selected from one or more of the shapes including semicircle, triangle, oblique triangle, rectangle. In this case, the dispersed phase is subjected to strong shear, collision, high-frequency vibration and other comprehensive effects.

[0102] The mixed flow shear homogenizing mixing device further includes a plurality of injection baffles 13. The number of the injection baffles 13 is the same as the number of the turbines 12, and the injection baffles 13 are fixedly arranged on the inner wall of the body 18 in the radial direction, and the injection baffles 13 are close to the discharge side of the turbine 12, so that the turbine 12, the wear-resistant bushing 11 and the close injection baffles 13 constitute a set of homogenizing shear components. In this case, when the hinged blade turbine of the shear homogenizing chamber rotates at high speed, the fluid is thrown to the wear-resistant bushing at the outer diameter of the hinged blade at high speed under the impetus of centrifugal force and the circular motion of the hinged blade, and rotates at high speed with the hinged blade, and at the same time forms a swirl and eddy between the two hinged blades, and the dispersed phase completes the comprehensive effects of high-speed, repeated, strong collision, mechanical shearing, hydraulic shearing, grinding, centrifugal extrusion, turbulence, high-frequency vibration, etc. At the same time, the hinged blade promotes the axial flow of the material, and it is ejected at high speed through the small hole of the injection baffle 13, which has a strong injection shear and cavitation effect. After strong mixing and dispersion in the homogenizing chamber of this level, it converges in the cavity between the injection baffle 13 and the wheel disc of the turbine 12, and enters the next level of shear homogenizing chamber in the form of a swirl. The multi-stage shear homogenizing chamber can ensure the dispersed phase particle size and uniformity required by the production process. In this embodiment, the injection baffle 13 is distributed with circular holes or strip holes of different sizes.

[0103] The mixed flow shear homogenizing mixing device further comprises a distance ring 14. The distance ring 14 is fixedly arranged between the injection baffle 13 of the first group and the wear-resistant bushing 11 of the second group along the inner wall circumferential direction of the body 18. In this case, the size and gap of each chamber in the first accommodating space can be adjusted by the distance ring 14.

[0104] Among them, the mixed flow shear homogenizing mixing device also includes a crushing and pressing wheel 8. The crushing and pressing wheel 8 is fixedly sleeved on the core shaft 1, and the position of the blades of the crushing and pressing wheel 8 corresponds to the position of the feed port. In this case, after the material is initially crushed by the crushing and pressing wheel 8, it can smoothly enter the subsequent shearing chamber in sequence to achieve step-by-step shearing of the material. In this embodiment, the crushing and pressing wheel 8 is a semi-open pressing impeller, and the number of blades of the crushing and pressing wheel 8 is 2-6; in this embodiment, the wheel disc of the semi-open pressing impeller 8 is located on one side of the first sealing mechanism, and an auxiliary impeller is arranged on one side of the first sealing mechanism side of the wheel disc, and the other side of the wheel disc is a pressing blade.

[0105] Among them, the mixed flow shear homogenizing mixing device also includes a discharge end impeller 17. The position of the discharge end impeller 17 corresponds to the position of the discharge port. In this case, the material can be discharged smoothly from the discharge port after passing through the discharge end impeller 17. In this embodiment, the discharge end impeller is a semi-open suction impeller, and the number of blades of the discharge end impeller is 2-6. In this embodiment, the wheel disc of the semi-open suction impeller 8 is located on one side of the second sealing mechanism, and an auxiliary impeller is arranged on one side of the second sealing mechanism side of the wheel disc, and the other side of the wheel disc is a suction blade.

[0106] Among them, the mixed-flow shear homogenizing mixing device also includes a first bearing box and a second bearing box. The first bearing box is arranged on the outside of the first body end cover, and the second bearing box is arranged on the outside of the second body end cover. The core shaft 1 passes through the bearing hole in the first bearing box, the first body end cover, the second body end cover, and the bearing hole in the second bearing box in sequence. In this case, the mixed-flow shear homogenizing mixing device provided in the embodiment of the present invention realizes two-end support. The main shafts of the prior art are mostly cantilever supports. The two-end supports can improve the stress state of the shaft, run stably, adapt to the requirements of large-scale, and ensure that the rotation of the core shaft 1 is smoother. In this embodiment, the core shaft 1 is provided with a first free end on the outside of the first bearing box, and the output shaft of the rotating power prime mover is fixedly connected to the first free end.

[0107] The mixed flow shear homogenizing mixing device further comprises a bearing box end cover. The core shaft 1 is provided with a second free end on the outer side of the second bearing box, and the second free end is enclosed by the bearing box end cover. In this case, the operation safety and stability of the mixed flow shear homogenizing mixing device provided in the embodiment of the present invention can be increased.

[0108] The first bearing box is provided with a first cooling accommodating space on the outer periphery of the bearing, and the second bearing box is provided with a second cooling accommodating space on the outer periphery of the bearing, and the first cooling accommodating space and the second cooling accommodating space are filled with refrigerant. During the operation of the mixed flow shear homogenizing mixing device provided in the embodiment of the present invention, the core shaft 1 rotates with the rotary power driving member, and the friction between the core shaft 1 and the bearing generates a large amount of heat. After cooling with the refrigerant, the safety accident caused by overheating of the core shaft 1 can be avoided.

[0109] The homogenizer with a rotor-stator structure in the prior art relies on the small gap between the rotor and the stator to perform mixed flow shearing, and the gap between the rotor and the stator has a decisive influence on the mixing effect. The mixed flow homogenizing shearing and homogenizing mixing device provided by the present invention is not sensitive to the rotor-stator gap, and relies on the high-speed radial speed and circumferential speed formed by the folding blade turbine on the material, which forms strong collision, crushing, grinding, mechanical shearing, hydraulic shearing, high-frequency vibration, turbulence and other effects with the wear-resistant bushing. Strong swirl and eddy current can be formed between every two folding blades, so that the above effects are repeated. At the same time, the folding blade turbine causes the material to form an axial flow, and when passing through the injection plate, injection shear and cavitation effects are formed. A small amount of unevenly dispersed and mixed materials in this stage of homogenizing chamber are macroscopically mixed in the form of swirl in front of the folding blade turbine disc, and enter the next stage of homogenizing chamber to continue the next round of strong comprehensive dispersion. After passing through multiple stages of homogenizing chambers, the dispersion and mixing effects required by the process are finally achieved.

[0110] The gap between the rotor and stator of the homogenizer with a rotor-stator structure in the prior art is difficult to adjust. In the shear homogenizing chamber of the mixed-flow shear homogenizing mixing device provided by the present invention, the axial gap between the rotating folding blade turbine and the stationary wear-resistant bushing, the injection plate, and the folding blade turbine can be adjusted by replacing the wear-resistant bushing and the spacing sleeve. The radial gap between the folding blade turbine and the wear-resistant bushing in the shear homogenizing chamber is also adjustable to meet the needs of different materials, thereby greatly enhancing the adaptability of the mixed-flow shear homogenizing mixing device of the present invention to materials.

[0111] In the shear homogenization chamber of the mixed flow shear homogenization mixing device provided by the present invention, the material flows axially as a whole, the folding blade turbine is in a good stress state and has small deformation, the main shaft is supported at both ends, the stress is uniform, and it can run stably for a long time. At the same time, the manufacturing and processing difficulty is small, the operation is stable, and it can be large-scaled.

[0112] The crushing and pressing wheel of the feed chamber of the mixed flow shear homogenizing mixing device provided by the present invention can effectively reduce the occurrence of cavitation, and the impeller at the discharge end of the discharge chamber can effectively increase the pressure head of the fluid, thereby eliminating the configuration of equipment and pipelines such as self-priming pumps and material conveying pumps in the process system, effectively reducing investment and operating costs.

[0113] The body of the mixed flow shearing homogenizing mixing device provided by the present invention can be optionally in the form of a jacket to achieve heating or heat removal of materials.

[0114] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0115] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A mixed flow shear homogenizing mixing device, characterized in that: It comprises a core shaft (1), a machine body (18), and a multi-stage homogenizing shearing component. The multi-stage homogenizing shearing assembly is sleeved on the core shaft (1). A first accommodating space is provided inside the machine body (18), and the multi-stage homogenizing shearing assembly is accommodated in the first accommodating space; The machine body (18) is provided with a feed inlet and a discharge outlet, and the first accommodating space is connected to the outside through the feed inlet and the discharge outlet.

2. The mixed flow shear homogenizing mixing device according to claim 1, characterized in that: The machine body (18) comprises an axial side wall, a first machine body end cover and a second machine body end cover, The first body end cover and the second body end cover respectively close the axial side wall at two radial ends of the axial side wall, so that the first accommodating space is formed between the axial side wall, the first body end cover and the second body end cover; The first body end cover is provided with a first through hole, and the second body end cover is provided with a second through hole. The first through hole and the second through hole are arranged at corresponding positions, and the core shaft passes through the first through hole and the second through hole respectively.

3. The mixed flow shear homogenizing mixing device according to claim 2, characterized in that: Also includes a first sealing mechanism and a second sealing mechanism, The first sealing mechanism is arranged between the core shaft (1) and the first machine body end cover; The second sealing mechanism is arranged between the core shaft (1) and the second machine body end cover; The first sealing mechanism is used to seal the gap between the core shaft (1) and the first machine body end cover, and the second sealing mechanism is used to seal the gap between the core shaft (1) and the first machine body end cover, so that the first accommodating space forms a sealed first accommodating space except that it is connected to the outside through the feed port and the discharge port.

4. The mixed flow shear homogenizing mixing device according to claim 1, characterized in that: It also includes a feed pipe (21) and a discharge pipe (22), The inner diameter of the feed pipe (21) is matched to the diameter of the feed port, and the feed pipe (21) is fixedly arranged at the feed port; The inner diameter of the discharge pipe (21) is matched to the diameter of the discharge port, and the discharge pipe (22) is fixedly arranged at the discharge port.

5. The mixed flow shear homogenizing mixing device according to claim 2, characterized in that: A jacket cylinder (15) is provided on the axial side wall. The jacket cylinder (15) is arranged inside the axial side wall along the annular direction of the axial side wall, so that the jacket cylinder (15) forms an annular storage space. The annular storage space is provided with a first through hole and a second through hole, so that the annular storage space is connected with the outside through the first through hole and the second through hole to realize the entry and exit of heat medium.

6. The mixed flow shear homogenizing mixing device according to claim 5, characterized in that: It also includes a heat medium inlet pipe (24) and a heat medium outlet pipe (23), The inner diameter of the heat medium inlet pipe (24) is matched with the diameter of the first through hole, and the heat medium inlet pipe (24) is fixedly arranged in the first through hole; The inner diameter of the heat medium outlet pipe (23) is matched to the diameter of the second through hole, and the heat medium outlet pipe (23) is fixedly arranged in the second through hole.

7. The mixed flow shearing homogenizing mixing device according to claim 6, characterized in that: The first through hole is arranged at the bottom of the annular storage space, and the second through hole is arranged at the top of the annular storage space.

8. The mixed flow shearing homogenizing mixing device according to claim 1, characterized in that: The homogenizing shearing assembly comprises a plurality of turbines (12), The plurality of turbines (12) are respectively axially sleeved on the core shaft (1) through their core holes.

9. The mixed flow shearing homogenizing mixing device according to claim 8, characterized in that: The turbine (12) is a semi-open hinged blade turbine, each of the semi-open hinged blade turbines has 3 to 6 hinged blades, and the angle of the hinged blades is 10° to 60°; The semi-open folding blade turbine (12) is provided with an annular wheel disc on the material inlet side, the annular wheel disc is fixedly connected to the blades of the semi-open folding blade turbine (12), the outer diameter of the annular wheel disc is the same as the outer diameter of the semi-open folding blade turbine, and the first accommodating space is divided into multiple levels of sub-accommodating spaces by the annular wheel disc.

10. The mixed flow shearing homogenizing mixing device according to claim 8, characterized in that: The blade diameter of the turbine (12) is adapted to the inner diameter of the first accommodating space; Preferably, the mixed flow shearing homogenizing mixing device further comprises a wear-resistant bushing (11), The wear-resistant bushing (11) is arranged between the periphery of the blades of the turbine (12) and the inner wall of the machine body (18); Preferably, a circle of saw teeth is evenly distributed on the inner wall of the wear-resistant bushing (11), and the saw teeth are in a shape selected from one or more of a semicircular shape, a triangle, an oblique triangle, and a rectangular shape; Preferably, the mixed flow shear homogenizing mixing device further comprises a plurality of injection baffles (13), The number of the injection baffles (13) is the same as the number of the turbines (12), The injection baffle (13) is fixedly arranged on the inner wall of the machine body (18) in the radial direction, and the injection baffle (13) is close to the discharge side of the turbine (12), so that the turbine (12), the wear-resistant bushing (11) and the close injection baffle (13) form a set of homogenizing shearing components; Preferably, the injection baffle (13) is provided with circular holes or strip holes of different sizes; Preferably, the mixed flow shear homogenizing mixing device further comprises a distance ring (14), The distance ring (14) is fixedly arranged along the circumferential direction of the inner wall of the machine body (18) between the front group of injection baffles (13) and the rear group of wear-resistant bushings (11); Preferably, the mixed flow shearing homogenizing mixing device further comprises a crushing and pressing wheel (8), The crushing and pressing wheel (8) is fixedly sleeved on the core shaft (1), and the position of the blades of the crushing and pressing wheel (8) corresponds to the position of the feed inlet; Preferably, the crushing and pressing wheel (8) is a semi-open pressing impeller, and the number of blades of the crushing and pressing wheel (8) is 2-6; The wheel disc of the semi-open press-in impeller is arranged on one side of the first sealing mechanism, the auxiliary impeller is arranged on one side of the wheel disc on the first sealing mechanism side, and the other side of the wheel disc is press-in blades; Preferably, the mixed flow shearing homogenizing mixing device further comprises an impeller (17) at the discharge end. The position of the impeller (17) at the discharge end corresponds to the position of the discharge port; Preferably, the impeller at the discharge end is a semi-open suction impeller, and the number of blades of the impeller at the discharge end is 2-6; The wheel disc of the semi-open suction-extraction impeller is arranged on one side of the second sealing mechanism, the auxiliary impeller is arranged on one side of the second sealing mechanism of the wheel disc, and the other side of the wheel disc is a suction-extraction blade; Preferably, the mixed flow shear homogenizing mixing device further comprises a first bearing box and a second bearing box. The first bearing box is arranged on the outer side of the first machine body end cover, and the second bearing box is arranged on the outer side of the second machine body end cover. The core shaft (1) passes through the bearing hole in the first bearing box, the first machine body end cover, the second machine body end cover, and the bearing hole in the second bearing box in sequence; Preferably, the core shaft (1) is provided with a first free end on the outer side of the first bearing box, and the output shaft of the rotary power driving member is fixedly connected to the first free end; Preferably, the mixed flow shear homogenizing mixing device further comprises a bearing box end cover, The core shaft (1) is provided with a second free end on the outer side of the second bearing box. The second free end is enclosed by the bearing box end cover; As a preference, The first bearing box is provided with a first cooling accommodating space on the outer periphery of the bearing. The second bearing box is provided with a second cooling accommodating space on the outer periphery of the bearing. The first cooling accommodating space and the second cooling accommodating space are filled with refrigerant.

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