Multistage gas-liquid mixing device
阅读说明:本技术 一种多级气液混合装置 (Multistage gas-liquid mixing device ) 是由 吴春笃 陈婷婷 张波 许小红 邱光宇 于 2020-08-14 设计创作,主要内容包括:本发明涉及一种多级气液混合装置,包括:管道本体和位于管道本体内的第一混合部、第二混合部和第三混合部;第一混合部包括开设在管道本体进气端侧壁的进液口,进液口与管道本体相切;第二混合部包括若干径向延伸的圆柱腔,以及填充圆柱腔的玻璃球;第三混合部包括与圆柱腔连通的锥形腔,锥形腔的纵截面面积由靠近圆柱腔向远离圆柱腔方向增大;其中在空气通入管道本体后,液体切向进入进液口形成旋流,并切割空气形成一级混合物;在一级混合物进入圆柱腔后,被玻璃球挤压空化形成二级混合物;二级混合物沿锥形腔流动并从锥形腔的大口径处喷出时被切割形成三级混合物;本发明通过三级混合,有更好的混合效率,适用各种范围需要杀菌消毒的工作。(The invention relates to a multistage gas-liquid mixing device, comprising: the pipeline comprises a pipeline body, and a first mixing part, a second mixing part and a third mixing part which are positioned in the pipeline body; the first mixing part comprises a liquid inlet arranged on the side wall of the air inlet end of the pipeline body, and the liquid inlet is tangent to the pipeline body; the second mixing part comprises a plurality of cylindrical cavities extending in the radial direction and glass balls filling the cylindrical cavities; the third mixing part comprises a conical cavity communicated with the cylindrical cavity, and the longitudinal section area of the conical cavity is increased from the direction close to the cylindrical cavity to the direction far away from the cylindrical cavity; after air is introduced into the pipeline body, liquid tangentially enters the liquid inlet to form rotational flow, and air is cut to form a primary mixture; after the first-stage mixture enters the cylindrical cavity, the first-stage mixture is extruded and cavitated by the glass balls to form a second-stage mixture; the secondary mixture flows along the conical cavity and is cut into a tertiary mixture when being sprayed out from the large-caliber part of the conical cavity; the invention has better mixing efficiency through three-stage mixing and is suitable for the work needing sterilization and disinfection in various ranges.)
1. The multistage gas-liquid mixing device is characterized by comprising a pipeline body (4), and a first mixing part (1), a second mixing part (2) and a third mixing part (3) which are positioned in the pipeline body (4);
the first mixing part (1) comprises a liquid inlet (12) formed in the side wall of the air inlet end of the pipeline body (4), and the liquid inlet (12) is tangential to the pipeline body (4);
the second mixing part (2) comprises a plurality of cylindrical cavities (21) extending in the radial direction and glass balls (22) filling the cylindrical cavities (21);
the third mixing part (3) comprises a conical cavity (31) communicated with the cylindrical cavity (21), and the longitudinal section area of the conical cavity (31) is increased from the direction close to the cylindrical cavity (21) to the direction far away from the cylindrical cavity (21); wherein
After air is introduced into the pipeline body (4), liquid tangentially enters the liquid inlet (12) to form rotational flow, and the air is cut to form a primary mixture;
after the primary mixture enters the cylindrical cavity (21), the primary mixture is squeezed and cavitated by the glass balls (22) to form a secondary mixture;
the secondary mixture flows along the conical cavity (31) and is cut into a tertiary mixture when being sprayed out from the large-caliber part of the conical cavity (31).
2. The multi-stage gas-liquid mixing device according to claim 1,
the pipeline body (4) comprises a first pipe body (41) and a second pipe body (42) which are fixed with each other;
the liquid inlet (12) is arranged on the side wall of the first pipe body (41), and the liquid inlet (12) is fixedly connected with a liquid inlet pipe (121), wherein
The liquid passes tangentially into the first tube (41) and forms a swirling flow inside the first tube (41).
3. The multi-stage gas-liquid mixing device according to claim 2,
a first end plate (130) and a second end plate (131) are respectively arranged at two ends of the first pipe body (41), the first end plate (130) is connected with the first pipe body (41) through a clamp (16), and the first pipe body (41), the second end plate (131) and the second pipe body (42) are connected through the clamp (16);
the middle part of the first end plate (130) is provided with an air inlet (14);
a liquid outlet (15) is formed in the middle of the second end plate (131); wherein
Air enters the first pipe body (41) from the air inlet (14), is cut by the rotational flow to form the primary mixture, and then is discharged into the second pipe body (42) through the liquid outlet (15).
4. The multi-stage gas-liquid mixing device according to claim 3,
one end of the second pipe body (42) close to the first pipe body (41) is inwards concavely provided with a cavity (23);
each cylindrical cavity (21) is communicated with the cavity (23), and the liquid outlet (15) is communicated with the cavity (23), wherein
After the primary mixture enters the cavity (23) through the liquid outlet (15), the first mixture is divided into a plurality of cylindrical cavities (21) and is extruded by the glass balls (22).
5. The multi-stage gas-liquid mixing device according to claim 4,
a grating plate (231) is arranged at the opening of the cylindrical cavity (21), wherein
The grid plate (231) can block the glass balls (22) from sliding out of the corresponding cylindrical cavity (21).
6. The multi-stage gas-liquid mixing device according to claim 5,
a fixed block is integrally arranged on the inner wall of the second pipe body (42), the cylindrical cavity (21) is arranged at one end of the fixed block, and the conical cavity (31) is arranged at the other end of the fixed block;
and a water distributor (32) is arranged at the position with a large caliber of the conical cavity (31), wherein
The tertiary mixture flowing out of the conical chamber (31) is ejected through the water distributor (32).
7. The multi-stage gas-liquid mixing device according to claim 6,
the water distributor (32) comprises a water distribution body (322) which is rotationally connected with the fixed block, and the section of the water distribution body (322) is conical;
the area between the water distribution body (322) and the second pipe body (42) is a water distribution cavity (321),
the minimum clearance between the water distribution body (322) and the second pipe body (42) is a circular ring clearance, wherein
After the tertiary mixture flows out from the conical cavity (31) to the water distribution cavity (321), the tertiary mixture is sprayed out through the annular gap.
8. The multi-stage gas-liquid mixing device according to claim 7,
the inner diameter of the first pipe body (41) is d, and the inner diameter of the liquid inlet pipe (121) is d1The length of the first pipe body (41) is L1Wherein
d1=0.2~0.3d,L1=1.2~1.5d1。
9. The multi-stage gas-liquid mixing device according to claim 8,
the length of the cavity (23) is L2,L2= 0.15-0.2 d; the inner diameter of each cylindrical cavity (21) is d2,The length of the second mixing part (2) is L3The diameters of the glass balls (22) are d3,d2=0.3d,L3=1.5~2.0d2,d3=0.4d2。
10. The multi-stage gas-liquid mixing device according to claim 9,
the diameter of the small opening of each conical cavity (31) is d4The diameter of the large opening of each conical cavity (31) is d5,d4=0.2d2,d5=5.0~6.0d4(ii) a The width of the circular ring gap is w, the water distribution angle of the water distributor (32) is theta, w =0.5mm, and theta = 90-120 degrees.
Technical Field
The invention relates to the technical field of gas-liquid mixing, in particular to a multistage gas-liquid mixing device.
Background
At present, the gas-liquid mixing modes widely applied in the market comprise a static mixer, a venturi tube, an ejector, a gas-liquid mixing pump and the like. The static mixer is widely used due to the advantages of no need of power, small investment, large production capacity and the like, but has lower mass transfer efficiency; the venturi tube is similar to the ejector, and the gas and the liquid are mixed by sucking gas by utilizing negative pressure formed by rapid flow of the liquid, power is not needed, but for insoluble gas, the mixing efficiency of gas and liquid phases is not high; the gas-liquid mixing pump mixes liquid and gas through the rotatory pump impeller of high speed, pressurizes simultaneously and improves the mixing effect, and the shortcoming needs the external power that provides, has certain energy consumption. Therefore, a novel multistage gas-liquid mixing device which is high in mixing efficiency and does not need energy supply is provided.
Disclosure of Invention
The invention aims to provide a multistage gas-liquid mixing device.
The technical scheme adopted by the invention for solving the technical problem is as follows: a multi-stage gas-liquid mixing device comprising: the pipeline comprises a pipeline body, and a first mixing part, a second mixing part and a third mixing part which are positioned in the pipeline body;
the first mixing part comprises a liquid inlet arranged on the side wall of the air inlet end of the pipeline body, and the liquid inlet is tangent to the pipeline body;
the second mixing part comprises a plurality of cylindrical cavities extending in the radial direction and glass balls filling the cylindrical cavities;
the third mixing part comprises a conical cavity communicated with the cylindrical cavity, and the longitudinal section area of the conical cavity is increased from the direction close to the cylindrical cavity to the direction far away from the cylindrical cavity; wherein
After air is introduced into the pipeline body, liquid tangentially enters the liquid inlet to form rotational flow, and the air is cut to form a primary mixture;
after the primary mixture enters the cylindrical cavity, the primary mixture is extruded and cavitated by the glass balls to form a secondary mixture;
the first-stage secondary mixture flows along the conical cavity and is cut into a tertiary mixture when being sprayed out from the large-caliber part of the conical cavity.
Preferably, the pipeline body comprises a first pipe body and a second pipe body which are fixed with each other;
the liquid inlet is arranged on the side wall of the first pipe body and is fixedly connected with a liquid inlet pipe, wherein
The liquid is tangentially introduced into the first pipe body, and a rotational flow is formed inside the first pipe body.
Preferably, a first end plate and a second end plate are respectively arranged at two ends of the first pipe body, the first end plate is connected with the first pipe body through a hoop, and the first pipe body and the second end plate are connected with the second pipe body through a hoop;
the middle part of the first end plate is provided with an air inlet;
a liquid outlet is formed in the middle of the second end plate; wherein
And air enters the first pipe body from the air inlet and is cut by the rotational flow to form the primary mixture, and then is discharged into the second pipe body through the liquid outlet.
Preferably, one end of the second pipe body, which is close to the first pipe body, is inwards concavely provided with a cavity;
each cylindrical cavity is communicated with the cavity, and the liquid outlet is communicated with the cavity, wherein
After the primary mixture passes through the liquid outlet and enters the cavity, the first mixture is shunted to enter each cylindrical cavity and is extruded by the glass balls.
Preferably, a grating plate is arranged at the opening of the cylindrical cavity, wherein
The grating plate can block the glass balls from sliding out of the corresponding cylindrical cavities.
Preferably, a fixed block is integrally arranged on the inner wall of the second pipe body, the cylindrical cavity is formed in one end of the fixed block, and the conical cavity is formed in the other end of the fixed block;
and a water distributor is arranged at the position of the large caliber of the conical cavity, wherein
And the tertiary mixture flowing out of the conical cavity is sprayed out through the water distributor.
Preferably, the water distributor comprises a water distribution body which is rotatably connected with the fixed block, and the cross section of the water distribution body is conical;
the area between the water distribution body and the second pipe body is a water distribution cavity,
the minimum clearance between the water distribution body and the second pipe body is a circular ring clearance, wherein
And after the tertiary mixture flows out of the conical cavity to the water distribution cavity, the tertiary mixture is sprayed out through the annular gap.
Preferably, the inner diameter of the first pipe body is d, and the inner diameter of the liquid inlet pipe is d1The length of the first pipe body is L1Wherein
d1=0.2~0.3d,L1=1.2~1.5d1。
Preferably, the length of the cavity is L2,L2= 0.15-0.2 d; the inner diameter of each cylindrical cavity is d2,The second mixing part has a length L3All glass spheres have a diameter of d3,d2=0.3d,L3=1.5~2.0d2,d3=0.4d2。
Preferably, the diameter of each small opening of the conical cavity is d4Each of the large opening diameters of the conical cavities is d5,d4=0.2d2,d5=5.0~6.0d4(ii) a The width of the circular ring gap is w, the water distribution angle of the water distributor is theta, w =0.5mm, and theta = 90-120 degrees.
The invention has the beneficial effects that: according to the multistage gas-liquid mixing device, the gas-liquid mixing effect is realized through the arrangement of the three-stage mixing part, the primary mixing of gas and liquid is realized through the first mixing part, the primarily mixed mixture is mixed again through the second mixing part, and the gas-liquid mixture is finally mixed through the third mixing part, so that the gas-liquid mixing effect is enhanced step by step, and the dissolution rate and the mass transfer efficiency of gas can be obviously improved; the invention has simple structure and easy assembly, and can be used in parallel when the water inflow is large; through the mixed effect of tertiary setting, can the wide application need the work of disinfecting in various fields.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of a multi-stage gas-liquid mixing apparatus according to the present invention;
FIG. 2 is a schematic structural view of a multi-stage gas-liquid mixing device according to a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a left side view of a multi-stage gas-liquid mixing apparatus of the present invention;
FIG. 5 is a perspective view of a second mixing section according to the present invention;
fig. 6 is a perspective view of a grid plate of the present invention.
In the figure:
a first mixing part 1, a liquid inlet 12, a
the second mixing part 2, the
the third mixing part 3, the conical cavity 31, the water distributor 32, the water distribution cavity 321, the water distribution body 322 and the annular gap 323;
the pipeline body 4, the first pipe 41 and the
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1 to 6, a multistage gas-liquid mixing device of the present invention includes: a duct body 4 and a first mixing part 1, a second mixing part 2 and a third mixing part 3 located inside the duct body 4; the first mixing part 1 comprises a liquid inlet 12 arranged on the side wall of the air inlet end of the pipeline body 4, and the liquid inlet 12 is tangential to the pipeline body 4; the second mixing part 2 comprises a plurality of
Optionally, the pipe body 4 comprises a first pipe body 41 and a
Optionally, a
Optionally, a
Optionally, a fixed block 24 is integrally arranged on the inner wall of the
Preferably, the water distributor 32 includes a water distribution body 322 rotatably connected to the fixing block 24, and the cross section of the water distribution body 322 is conical; the area between the water distribution body 322 and the
Preferably, the inner diameter of the first pipe 41 is d, and the inner diameter of the
Preferably, the length of the
Preferably, each of said tapered chambersThe diameters of the small openings 31 are d4, and the diameters of the large openings of the conical cavities 31 are d5,d4=0.2d2,d5=5.0~6.0d4(ii) a The width of the annular gap 323 is w, the water distribution angle of the water distributor 32 is theta, w =0.5mm, and theta = 90-120 degrees.
The working principle is as follows:
after entering the first pipe body 41 through the tangentially arranged liquid inlet 12, the liquid rotates and flows on the inner wall of the first pipe body 41 to form a rotational flow, the rotational flow liquid generates negative pressure at the central axis of the first pipe body 41 and sucks air from the air inlet 14 to form an air column, the air column and the rotational flow liquid are cut into a plurality of bubbles at the liquid outlet 15, and the gas is primarily dissolved in the liquid to form a primary mixture; the primary mixture is uniformly distributed to each cylindrical cavity 21 at the position of the cavity 23, when the primary mixture is placed in the cylindrical cavities and blocked by a plurality of glass balls 22, the pressure is instantly increased, the pressure is continuously reduced along with the increase of the speed in the process of flowing through the surfaces of the glass balls 22, and finally the cavitation is realized when the pressure is reduced to be lower than the saturated vapor pressure on a liquid-solid interface, so that a secondary mixture is formed; the secondary mixture flows to the conical cavity 31 through the bottom of the cylindrical cavity 21, instantaneous high pressure is generated when the secondary mixture enters the small-caliber part of the conical cavity 31 from the cylindrical cavity 21 with a larger caliber, the pressure is continuously reduced along with the increase of the caliber of the conical cavity 31, finally, the liquid and the bubbles are mutually cut at the large-caliber part of the conical cavity 31 again, the particle size of the bubbles is further reduced, and a tertiary mixture is formed; the third-stage mixture finally flows into the water distributor, and finally the gas-liquid mixture is discharged through the annular gap 323.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
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