阅读说明：本技术 一种新型无动力旋流式混合装置及其混合方法 (Novel unpowered spiral-flow type mixing device and mixing method thereof ) 是由 鲁朝金 宋晓敏 陈鹏飞 于 2020-04-23 设计创作，主要内容包括：本发明涉及一种新型无动力旋流式混合装置及其混合方法,该装置包括圆筒管道(5),其顶端设置了法兰盖(4),侧方分别设置了连续相进口(1)和分散相进口(2)；与圆筒管道(5)连接的倒锥形管道(6),其底端设置了混合物料出口(3)；设置在所述圆筒管道(5)内的叶片旋转器(7)和支撑架(8),该叶片旋转器(7)由直板叶片(7-1)和纤维网叶片(7-2)组成,直板叶片(7-1)与所述连续相进口(1)和分散相进口(2)对齐；以及设置在所述倒锥形管道(5)内的螺旋式混合叶片(9)。本发明装置无需外加动力设备,具有体积小、重量轻、安装方便、混合效率高的优点,可适用于石油、环保、化工、制药、食品等多个领域。(The invention relates to a novel unpowered spiral-flow type mixing device and a mixing method thereof, wherein the device comprises a cylindrical pipeline (5), a flange cover (4) is arranged at the top end of the cylindrical pipeline, and a continuous phase inlet (1) and a disperse phase inlet (2) are respectively arranged on the lateral side of the cylindrical pipeline; the inverted cone-shaped pipeline (6) is connected with the cylindrical pipeline (5), and the bottom end of the inverted cone-shaped pipeline is provided with a mixed material outlet (3); a blade rotator (7) and a support frame (8) arranged in the cylindrical pipe (5), wherein the blade rotator (7) is composed of a straight blade (7-1) and a fiber net blade (7-2), and the straight blade (7-1) is aligned with the continuous phase inlet (1) and the disperse phase inlet (2); and a helical mixing blade (9) arranged in the inverted conical pipe (5). The device of the invention does not need additional power equipment, has the advantages of small volume, light weight, convenient installation and high mixing efficiency, and can be applied to a plurality of fields of petroleum, environmental protection, chemical industry, pharmacy, food and the like.)

1. A novel unpowered cyclonic mixing device, the device comprising:

a cylindrical pipeline (5), the top end of which is provided with a flange cover (4), and the side of which is respectively provided with a continuous phase inlet (1) and a disperse phase inlet (2);

the inverted cone-shaped pipeline (6) is connected with the cylindrical pipeline (5), and the bottom end of the inverted cone-shaped pipeline is provided with a mixed material outlet (3);

a vane rotator (7) and a support frame (8) arranged in the cylindrical pipe (5), wherein the vane rotator (7) is composed of a straight vane (7-1) and a fiber net vane (7-2), and the straight vane (7-1) is aligned with the continuous phase inlet (1) and the disperse phase inlet (2); and

a helical mixing blade (9) arranged in the inverted conical conduit (6);

two tangent side inlet pipelines are arranged on opposite sides of the cylindrical pipeline (5), and the side inlet pipelines are respectively communicated with the continuous phase inlet (1) and the disperse phase inlet (2).

2. The apparatus according to claim 1, characterized in that said cylindrical pipe (5) and said inverted conical pipe (6) are of a unitary structure and arranged vertically.

3. The device according to claim 1, characterized in that the continuous phase inlet (1) and the dispersed phase inlet (2) are located in the middle upper part of the cylindrical pipe (5), and the side inlet pipe of the continuous phase inlet (1) transitions from a circular inlet to a rectangular inlet of constant cross-section from outside to inside.

4. The device as claimed in claim 1, wherein the blade rotator (7) is formed by welding a plurality of rectangular blades on the rotating shaft uniformly in the circumferential direction, the number of the rectangular blades is 2, 4 or 6, each rectangular blade can be divided into an upper half part which is a straight blade (7-1) and a lower half part which is the fiber mesh blade (7-2).

5. The device according to any of the claims 1 and 4, characterized in that the vane rotator (7) is fixed on the central axis of the cylindrical pipe (5) by a positioning groove (4-1) on the flange cover (4) and a positioning groove (8-1) on the support frame (8); the flange cover (4) is fixed at the top end of the cylinder pipeline (5) through bolts, the support frame (8) is welded at the joint of the cylinder pipeline (5) and the inverted cone pipeline (6), and meanwhile, a wear-resistant sleeve or a bearing is arranged between a rotating shaft of the blade rotator (7) and the positioning grooves (4-1) and (8-1).

6. The device according to any of claims 1 and 4, characterized in that the straight blades (7-1) are thin plates and the spaced straight blades are uniformly perforated with a diameter of 2-6mm and the number of perforated plates is 1/2.

7. The device according to any of claims 1 and 4, characterized in that the web blades (7-2) are formed by fixing a web filler to a support frame, the thickness of the web filler is 0.5-5mm, the porosity is 0.6-0.85, the number of web layers can be 2-10, the fiber material is a dispersed phase fiber, and the fiber diameter is 0.1-0.25 mm.

8. The apparatus according to claim 1, wherein the helical mixing blades (9) are conical helical blades with uniform openings of 3-8mm diameter and welded into the inverted cone-shaped pipe (6), the pitch of the conical helical blades is 0.3-0.5D1, wherein D1 is the diameter of the upper end of the inverted cone-shaped pipe (6).

9. The apparatus according to any one of claims 1 and 8, wherein the width of the helical mixing blades (9) is of a gradual width, starting width is 0.4-0.6D1 and ending width is 0.3-0.5D2, wherein D1 and D2 are the diameters of the upper and lower ends of the inverted cone-shaped pipe (5), respectively.

10. A novel unpowered rotational flow type mixing method comprises the following steps:

(a) the continuous phase flows into the cylindrical pipeline (5) at a high speed in a tangential direction through the continuous phase inlet (1) to generate rotational flow, and directly impacts the blade rotator (7) therein to enable the continuous phase to rotate at a high speed, the rotating straight plate blades (7-1) in turn shear and crush the dispersed phase entering the cylindrical pipeline (5) at a tangential direction through the dispersed phase inlet (2), and simultaneously generate the optimal rotational flow shearing mixing mass transfer effect under the rotating stirring of the straight plate blades (7-1); and

(b) when the mixed two phases obtained in the step (a) continuously swirl downwards to the lower half part of the cylindrical pipeline (5), the rotating fiber net blades (7-2) carry out fiber segmentation, collision and crushing on the dispersed phase, so that the dispersion effect is further strengthened; and

(c) and (c) when the mixed two phases obtained in the step (b) flow downwards to the inverted cone-shaped pipeline (6), high-speed spiral mixing is generated under the strong centrifugation of the inverted cone and the forced diversion of the spiral mixing blades (9), so that the mixed mass transfer effect is further enhanced.

Technical Field

The disclosure belongs to the technical field of fluid mixing equipment, and particularly relates to a novel unpowered spiral-flow type mixing device and a mixing method.

Background

The pipeline mixer is also called a tubular static mixer, and is widely applied to the fields of petrochemical industry and the like as a high-efficiency mixing device, the mixing of a plurality of liquids, particularly the mixing of two phases, is often a key link in industrial production, such as the mixing, extraction, reaction, emulsification, acid-base neutralization, removal of harmful substances in liquid and the like of coagulant aids, and whether the liquid-liquid mixing is uniform or not and whether the mass transfer is complete or not is often related to the production of products or the quality of the products.

In order to achieve the purpose of sufficient contact and mass transfer of the mixture, stirring is usually adopted, and the mixture can be uniformly mixed if the power is high and the stirring degree is high. Therefore, power equipment is often added outside the mixer to accelerate stirring and improve the mixing effect, such as Chinese patent CN101185860B, but in the stirring and mixing production process, the equipment is often high in cost, large in occupied space and sometimes occupies up to 20% -40% of energy consumption. In addition, in the prior art, pipeline static mixers are mostly adopted, and under the condition that external power is not needed, two or more than two fluids are continuously mixed mostly in a mode of helical blades or other mixing elements, such as chinese patent CN206560803U, but the action mode of these static mixers on the fluids is single, and the disadvantages of poor mixing effect, insufficient dispersion degree and insufficient mixing exist. In comparison, the swirl static mixer is a tubular mixer which is most widely used, for example, chinese patent CN 103816822B, a spiral flow is formed in the fluid flowing process in the mixing tube, the fluid flows from the rotation center to the outside under the action of the spiral centrifugal force, the fluid on the outside flows to the rotation center, thus forming radial convective mixing, and meanwhile, the fluid is sheared, rotated, remixed when flowing through the adjacent mixing elements, and also forming radial distributive mixing.

However, the mixing performance of the existing swirl mixers is relatively poor, and a novel efficient swirl mixer has to be developed to adapt to the development in the field. If the mixing performance of the swirl mixer is to be improved, the mixing elements of the conventional swirl mixer must be improved or optimized, and other mixing modes are added, so that the uniform dispersion of the fluid in the mixer is improved through the mutual influence and mutual coupling of the swirl and the other mixing modes, and the mixing effect of the whole mixer is further improved.

Disclosure of Invention

The invention provides a novel unpowered spiral-flow type mixing device and a mixing method thereof, and aims to solve the technical problems of insufficient mixing of two-phase fluids and incomplete mass transfer of a spiral-flow type mixer in the prior art.

In one aspect, the present disclosure provides a novel unpowered spiral-flow type mixing device, the device includes:

the top end of the cylindrical pipeline is provided with a flange cover, and the side of the cylindrical pipeline is respectively provided with a continuous phase inlet and a disperse phase inlet;

the bottom end of the inverted cone pipeline is provided with a mixed material outlet;

the blade rotator and the supporting frame are arranged in the cylindrical pipeline, the blade rotator consists of a straight blade and a fiber mesh blade, and the straight blade is aligned with the continuous phase inlet and the disperse phase inlet; and

a helical mixing blade disposed within the inverted conical conduit;

two tangent side inlet pipelines are arranged on opposite sides of the cylindrical pipeline and are respectively communicated with the continuous phase inlet and the disperse phase inlet.

In a preferred embodiment, the cylindrical pipe and the inverted cone-shaped pipe are of an integral structure and are arranged vertically.

In another preferred embodiment, the continuous phase inlet and the dispersed phase inlet are located in the middle upper part of the cylindrical pipe, and the side inlet pipe of the continuous phase inlet is transited from a circular inlet to a rectangular inlet with a constant cross section from the outside to the inside.

In another preferred embodiment, the blade rotator is formed by uniformly welding a plurality of rectangular blades on the rotating shaft in the circumferential direction, the number of the rectangular blades is 2, 4 or 6, each rectangular blade can be divided into an upper half part which is a straight blade and a lower half part which is the fiber mesh blade.

In another preferred embodiment, the vane rotator is fixed on the central axis of the cylindrical pipeline through a flange cover and a positioning groove on the supporting frame; the flange cover is fixed at the top end of the cylinder pipeline through bolts, the support frame is welded at the joint of the cylinder pipeline and the inverted cone pipeline, and meanwhile, a wear-resistant sleeve or a bearing is arranged between the rotating shaft of the blade rotator and the positioning groove.

In another preferred embodiment, the straight blades are thin plates, and holes are uniformly formed in the interval straight blades, the diameter of each hole is 2-6mm, and the number of the hole plates is 1/2.

In another preferred embodiment, the fiber mesh blade is formed by fixing fiber mesh filler to a support frame, wherein the thickness of the fiber mesh filler is 0.5-5mm, the porosity is 0.6-0.85, the number of fiber mesh layers can be 2-10, the fiber material is sparsely dispersed phase fiber, and the fiber diameter is 0.1-0.25 mm.

In another preferred embodiment, the spiral mixing blade is a positive spiral blade, which is uniformly perforated with a diameter of 3-8mm and welded in the inverted cone-shaped pipe, and the pitch of the positive spiral blade is 0.3-0.5D1, wherein D1 is the diameter of the upper end of the inverted cone-shaped pipe.

In another preferred embodiment, the width of the spiral mixing blades is gradually changed, the starting width is 0.4-0.6D1, the ending width is 0.3-0.5D2, wherein D1 and D2 are the diameters of the upper end and the lower end of the inverted cone-shaped pipe respectively.

In another aspect, the present disclosure provides a novel unpowered cyclonic mixing method comprising the steps of:

(a) the continuous phase flows into the cylindrical pipeline at a high speed through the continuous phase inlet in a tangential direction to generate rotational flow, and directly impacts the blade rotator therein to enable the blade rotator to rotate at a high speed, the rotating straight plate blades shear and crush the dispersed phase entering the cylindrical pipeline through the dispersed phase inlet in a tangential direction, and simultaneously the optimal rotational flow mixing mass transfer effect is generated under the rotating stirring of the straight plate blades; and

(b) when the mixed two phases obtained in the step (a) continuously swirl downwards to the lower half part of the cylindrical pipeline, the rotating fiber mesh blades perform fiber segmentation, collision and crushing on the dispersed phase, so that the dispersion effect is further enhanced; and

(c) and (c) when the mixed two phases obtained in the step (b) flow downwards to the inverted cone-shaped pipeline, high-speed spiral mixing is generated under the strong centrifugation of the inverted cone and the forced diversion of the internal spiral mixing blades, so that the mass transfer effect of the mixing is further enhanced.

The invention has the following beneficial effects:

1. the tangential inlet of the continuous phase is changed from circular to rectangular, so that the inflow velocity can be increased to generate high-speed rotational flow, the impact force on the rotating blade is increased, the straight blade and the fiber mesh blade are driven to rotate at high speed, the dispersed phase is continuously sheared by the straight blade rotating at high speed, the continuous following effect is broken, the pressure loss can be reduced by opening holes in part of the straight blade, the dispersed phase liquid drops are broken by the cutting effect of the capillary fibers by the high-speed rotating fiber mesh blade, and the dispersion degree of the mixed liquid is increased.

2. Set up awl helical blade in the back taper pipeline, can force reinforcing spiral mixing degree, the reducible flow resistance of even trompil on the awl helical blade effectively reduces the head loss of intaking.

3. The flange cover is connected with the cylinder pipeline through bolts, so that the blade rotator and the supporting frame are easy to disassemble, assemble and maintain, and the blades of the blade rotator can be replaced at any time according to the condition of fluid media.

4. Meanwhile, three mixing methods of rotational flow shearing mixing, fiber crushing mixing and high-speed spiral mixing are combined, so that the dispersion degree of liquid-liquid mixing can be greatly improved, and the mixing mass transfer effect is enhanced.

In a word, the device of the invention does not need additional power equipment, has the advantages of small volume, light weight, convenient installation and high mixing efficiency, and can be suitable for a plurality of fields of petroleum, environmental protection, chemical industry, pharmacy, food and the like.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification to further illustrate the disclosure and not limit the disclosure.

Fig. 1 is a schematic perspective view of the novel unpowered cyclonic mixing apparatus of example 1.

FIG. 2 is a schematic cross-sectional view of the novel unpowered cyclonic mixing apparatus of example 1.

Fig. 3 is a perspective view of the flange cover of embodiment 1.

FIG. 4 is a perspective view of a vane rotor according to embodiment 1

Fig. 5 is a perspective view of the support frame of embodiment 1.

Fig. 6 is a perspective view of the spiral mixing blade of embodiment 1.

FIG. 7 is a bottom view of the spiral mixing blade of example 1.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The inventor of the application is extensively and deeply researched, aiming at the technical problems of insufficient mixing of two-phase fluid and incomplete mass transfer of a mixer in the prior art, the blade rotator and the spiral mixing blade are arranged in the simulated cyclone pipeline, the shearing mixing of the straight blades, the fiber crushing mixing of the fiber mesh blades and the spiral mixing of the spiral mixing blade are fully utilized, so that the continuous phase and the dispersed phase entering the device can be mixed more fully and uniformly, and the effect of thorough mass transfer is achieved, the technical problems of non-uniform liquid-liquid mixing and poor mass transfer effect of the existing device are solved, the device does not need to be additionally provided with additional power, the structure is simple, the mixing efficiency is high, the size is small, the internal mixing components are installed, replaced and maintained simply, and the device can be popularized in the chemical engineering fields of petroleum, environmental protection, pharmacy, food and the like.

In a first aspect of the disclosure, there is provided a novel unpowered cyclonic mixing device comprising:

the top end of the cylindrical pipeline is provided with a flange cover, and the side of the cylindrical pipeline is respectively provided with a continuous phase inlet and a disperse phase inlet;

the bottom end of the inverted cone pipeline is provided with a mixed material outlet;

the blade rotator and the supporting frame are arranged in the cylindrical pipeline, the blade rotator consists of a straight blade and a fiber mesh blade, and the straight blade is aligned with the continuous phase inlet and the disperse phase inlet; and

a helical mixing blade disposed within the inverted conical conduit;

two tangent side inlet pipelines are arranged on opposite sides of the cylindrical pipeline and are respectively communicated with the continuous phase inlet and the disperse phase inlet.

In the present disclosure, the cylindrical pipe and the inverted conical pipe are an integral structure and are arranged in a vertical manner.

In the present disclosure, the continuous phase inlet and the dispersed phase inlet are located at the middle upper part of the cylindrical pipe, and the side inlet pipe of the continuous phase inlet is transited from a circular inlet to a rectangular inlet with a constant cross section from the outside to the inside.

In this disclosure, the blade circulator is formed by a plurality of rectangular blade circumference homogeneous weld in the pivot, and the number of rectangular blade sets up 2, 4 or 6, and every rectangular blade can be divided into first half and be the straight board blade, and the latter half is the fibre web blade.

In the disclosure, the vane rotator is fixed on the central axis of the cylindrical pipeline through a flange cover and a positioning groove on a support frame; the flange cover is fixed at the top end of the cylinder pipeline through bolts, the support frame is welded at the joint of the cylinder pipeline and the inverted cone pipeline, and meanwhile, a wear-resistant sleeve or a bearing is arranged between the rotating shaft of the blade rotator and the positioning groove.

In the present disclosure, the straight blades are thin plates, and holes are uniformly formed on the spaced straight blades, the diameter of each hole is 2-6mm, and the number of the hole plates is 1/2 of the total number.

In the disclosure, the fiber mesh blade is formed by fixing fiber mesh filler on a support frame, the thickness of the fiber filler is 0.5-5mm, the porosity is 0.6-0.85, the number of fiber mesh layers can be 2-10, the fiber material is dispersed phase fiber, and the fiber diameter is 0.1-0.25 mm.

In the disclosure, the spiral mixing blade is a conical spiral blade, holes are uniformly formed in the conical spiral blade, the diameter of each hole is 3-8mm, the conical spiral blade is welded in the inverted conical pipeline, the pitch of the conical spiral blade is 0.3-0.5D1, and D1 is the diameter of the upper end of the inverted conical pipeline.

In the present disclosure, the width of the spiral mixing blade is gradually changed, the initial width is 0.4-0.6D1, the final width is 0.3-0.5D2, wherein D1 and D2 are the diameters of the upper end and the lower end of the inverted cone-shaped pipeline respectively.

In a second aspect of the disclosure, a novel unpowered cyclonic mixing method is provided, the method comprising the steps of:

(a) the continuous phase flows into the cylindrical pipeline at a high speed through the continuous phase inlet in a tangential direction to generate rotational flow, and directly impacts the blade rotator therein to enable the blade rotator to rotate at a high speed, the rotating straight plate blades in turn shear and crush the dispersed phase entering the cylindrical pipeline through the dispersed phase inlet in a tangential direction, and simultaneously generate the optimal rotational flow shearing mixing mass transfer effect under the rotating stirring of the straight plate blades; and

(b) when the mixed two phases obtained in the step (a) continuously swirl downwards to the lower half part of the cylindrical pipeline, the rotating fiber mesh blades perform fiber segmentation, collision and crushing on the dispersed phase, so that the dispersion effect is further enhanced; and

(c) and (c) when the mixed two phases obtained in the step (b) flow downwards to the inverted cone-shaped pipeline, high-speed spiral mixing is generated under the strong centrifugation of the inverted cone and the forced diversion of the internal spiral mixing blades, so that the mass transfer effect of the mixing is further enhanced.

The invention can achieve the aim of liquid-liquid uniform mixing mass transfer only in the process of liquid flowing without increasing power, and can realize the full mixing and mass transfer enhancement of continuous phase and dispersed phase.

The device of the invention mainly comprises the following two parts:

(1) column segment part

The cylindrical section part is a cylindrical pipeline, a blade rotator is arranged in the cylindrical pipeline and consists of straight blades and fiber mesh blades, continuous phases and disperse phases entering at high speed in a tangential mode generate rotational flow mixing in the cylindrical pipeline, the straight blades are directly impacted, the straight blades and the fiber mesh blades rotate at high speed, and the straight blades rotating at high speed in turn continuously shear the disperse phases to generate shearing mixed mass transfer. The fiber filler in the fiber mesh blade is woven by one or more fibers with dispersed phases, and the dispersed phases in the continuous phases are continuously cut and crushed by multiple layers of fine fibers under high-speed rotation, so that the particle size of the liquid degree of the dispersed phases is reduced, the dispersion degree is improved, and the uniform mixing mass transfer of the two phases is further enhanced.

(2) Conical section part

The conic section part is the back taper pipeline, and its inside is equipped with the mixed internals of spiral, and the mixed internals of spiral adopts even foraminiferous awl flight, and flight width from the top down is short gradually, and this kind of flight structure can reduce flow resistance through even trompil, effectively reduces the water inlet head loss, can make liquid flow reach high spiral mixing again under the effect of forcing the water conservancy diversion, can further strengthen the effect that two-phase fluid mixes the mass transfer.

Reference is made to the accompanying drawings.

FIG. 1 is a perspective view of a novel unpowered cyclonic mixing apparatus according to a preferred embodiment of the present disclosure. As shown in fig. 1, the apparatus comprises a cylindrical pipe 5, a flange cover 4 is arranged at the top end of the cylindrical pipe, and a continuous phase inlet 1 and a disperse phase inlet 2 are respectively arranged at the sides of the cylindrical pipe; and the inverted cone-shaped pipeline 6 is connected with the cylindrical pipeline 5, the bottom end of the inverted cone-shaped pipeline is provided with a mixed material outlet 3, wherein two tangent side inlet pipelines are arranged on the opposite sides of the cylindrical pipeline 5 and are respectively communicated with the continuous phase inlet 1 and the disperse phase inlet 2.

FIG. 2 is a schematic cross-sectional view of a novel unpowered cyclonic mixing apparatus according to a preferred embodiment of the present disclosure. As shown in fig. 2, a blade rotator 7 and a support frame 8 are arranged in the cylindrical pipeline 5, and a spiral mixing blade 9 is arranged in the inverted cone-shaped pipeline 6; the blade rotator 7 consists of a straight blade 7-1 and a fiber mesh blade 7-2, wherein the straight blade 7-1 is aligned with the continuous phase inlet 1 and the dispersed phase inlet 2; the vane rotator 7 is fixed on the central axis of the cylindrical pipeline 5 through a positioning groove 4-1 on the flange cover 4 and a positioning groove 8-1 on the support frame 8, the support frame 8 is welded at the joint of the cylindrical pipeline 5 and the inverted cone-shaped pipeline 6, and meanwhile, a wear-resistant sleeve or a bearing is arranged between a rotating shaft of the vane rotator 7 and the flange cover 4 and the support frame 8.