CN113083081A - Self-suction jet flow flexible combined stirring device - Google Patents
Self-suction jet flow flexible combined stirring device Download PDFInfo
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- CN113083081A CN113083081A CN202110472618.8A CN202110472618A CN113083081A CN 113083081 A CN113083081 A CN 113083081A CN 202110472618 A CN202110472618 A CN 202110472618A CN 113083081 A CN113083081 A CN 113083081A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/116—Stirrers shaped as cylinders, balls or rollers
- B01F27/1163—Rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
- B01F27/2122—Hollow shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
- B01F27/231—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with a variable orientation during mixing operation, e.g. with tiltable rotor axis
- B01F27/2311—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with a variable orientation during mixing operation, e.g. with tiltable rotor axis the orientation of the rotating shaft being adjustable in the interior of the receptacle, e.g. by tilting the stirrer shaft during the mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/95—Heating or cooling systems using heated or cooled stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
A self-priming jet flow flexible combined stirring device relates to a stirring device, and a self-priming jet flow flexible combined stirring paddle (2) fixed on a middle shaft consists of two or more paddles, wherein a plurality of flexible pipes of each paddle are obliquely arranged with an axis. As the paddle of the stirring paddle, the flexible pipe deforms in the stirring process, and the disturbance to the surrounding fluid is increased. The pressure difference at the two ends of the flexible pipe enables the fluid to enter the pipe from the inner side in a self-suction mode and to be sprayed out from the outer side at high speed to form a plurality of self-suction jet flows. The self-suction jet flow flexible combined stirring paddle effectively improves the mixing of the center and the near-wall fluid and the upper and lower fluids, solves the problems of low mixing efficiency and flow dead zones, and strengthens the heat and mass transfer process. The device can be widely used for stirring fluid heat and mass transfer.
Description
Technical Field
The invention relates to a self-priming jet flow flexible combined stirring device, in particular to a self-priming jet flow flexible combined stirring device.
Background
Stirring mixing equipment is widely applied to the fields of chemical industry, food and the like, and the strengthening of the mixing process is the key for realizing high efficiency and energy conservation of a stirring reactor. The stirring paddle is a main energy conversion component in the mixing process, and how to design the stirring paddle to provide a suitable flow field so as to improve the mixing efficiency of fluid in the stirring kettle is a key research direction in the chemical field. For the mixture of liquid and solid-liquid phases, the local fluid far away from the stirring paddle can not be fully mixed, and a flowing dead zone is easily caused. To this end, many stirring devices take the form of composite paddles that increase the mass and heat transfer rates. At present, the developed combined stirring paddle enhances the mixing effect by changing the shape of the paddle or the inclination angle of the paddle, for example: double-layer six-straight-blade turbine, double-layer three-blade propelling type stirring paddle, rigid-flexible combined stirring paddle and the like.
The flexible stirring paddle can obtain better fluid disturbance effect and higher mixing efficiency than a rigid stirring paddle. In the stirring process, the stirring paddle rotates to mix the fluid, and the flexible paddle can generate deformation of different degrees and can promote fluid disturbance. The self-priming jet flow stirring paddle uses a hollow pipe to replace a paddle to induce self-priming jet flow, and internal flow is generated in the stirring kettle. A plurality of flexible pipes are arranged on the stirring paddle to replace blades, the flexible pipes generate self-absorption jet flow and bending deformation, the defects of the existing combined stirring device are overcome, and the combined stirring device has important significance for strengthening mixing.
Disclosure of Invention
The invention aims to provide a self-priming jet flow flexible combined stirring device, a plurality of flexible pipes are combined and arranged, the rotation motion of fluid provides pressure difference for the fluid flow in the flexible pipes, surrounding fluid continuously enters from the inner sides of the flexible pipes in a self-priming mode and is sprayed out from the other sides of the flexible pipes to form self-priming jet flow, the radial and axial mixing in a stirring kettle is improved, a plurality of flexible pipes form a combined paddle, a plurality of strands of self-priming jet flow are formed, and the chaotic mixing effect of the fluid is improved.
The purpose of the invention is realized by the following technical scheme:
a self-priming jet flexible combination stirring device, comprising:
A. the device comprises: the stirring shaft, the self-priming jet flow flexible combination stirring paddle, the stirring kettle, the stabilizer, the discharge hole, the jacket, the feed inlet, the liquid level meter and other accessories (such as a pressure gauge, a thermometer, a demister and the like).
The self-priming jet flow flexible combined stirring paddle consists of two or more paddles, and each paddle consists of a shaft sleeve, a flexible pipe and a bracket; the flexible pipe is combined by a plurality of flexible pipes, each group is more than two, and the flexible pipes are uniformly distributed relative to the stirring shaft. The axis of the flexible pipe is an inclined straight line or a curve and is uniformly distributed on the side surface of the circular truncated cone, and the cross section of the flexible pipe is in a closed form such as a circle, a square or an ellipse.
B. The dynamic combination form of the device is as follows:
a. the fluid enters the stirring container from the feed inlet, and the liquid level of the fluid in the stirring kettle is monitored by a liquid level meter;
b. the stirring shaft, the self-priming jet flow flexible combined stirring paddle and the stabilizer rotate under the driving of the driving device, and the temperature in the stirring kettle is controlled through the jacket;
c. the flexible pipe bends reversely to the rotation motion of the fluid under the influence of the fluid flow, so that the disturbance to the surrounding fluid is increased;
d. the fluid in the stirring kettle rotates, and the fluid around the self-suction jet flow flexible combined stirring paddle enters the flexible pipe from the inner side in a self-suction mode and is ejected from the outer side at high speed to form self-suction jet flow.
According to the self-priming jet flow flexible combined stirring device, the section of the flexible pipe is changed, and the cross section area is gradually reduced along the jet flow direction so as to improve the jet flow speed.
According to the self-priming jet flow flexible combined stirring device, a plurality of flexible pipes are uniformly combined and distributed on a certain annular surface, and the flexible pipes of two or more paddles are arranged in a staggered manner, so that the phenomenon of opposite impact or suction of fluid during jet flow is prevented.
According to the self-priming jet flow flexible combined stirring device, the axial position of the self-priming jet flow flexible combined stirring paddle can be adjusted through the positioning device.
According to the self-priming jet flow flexible combined stirring device, the cross section structure of the support adopts a circular or square hollow pipe so as to reduce the total mass of the stirring paddle.
The self-priming jet flow flexible combined stirring device and the application method thereof have the advantages that the lower part of the stirring shaft is fixed by a bearing.
According to the self-priming jet flow flexible combined stirring device and the application method thereof, the flexible pipes are arranged in a cross combination mode along the axis, the jet flow directions are not interfered with each other, and the inner flow of a plurality of jet flows is formed.
According to the self-priming jet flow flexible combined stirring device and the application method thereof, the stirring shaft, the self-priming jet flow flexible combined stirring paddle and the stabilizer are made of corrosion-resistant materials.
According to the self-priming jet flow flexible combined stirring device and the application method thereof, when the self-priming jet flow flexible combined stirring paddle is used for stirring non-Newtonian fluid, the mixing effect can be effectively improved.
The self-priming jet flow flexible combined stirring device and the application method thereof have the advantages that the foam remover is additionally arranged in the stirring kettle, so that foam generated in the stirring and mixing process can be discharged conveniently.
According to the self-priming jet flow flexible combined stirring device and the application method thereof, the stirring shafts are connected through the coupling, so that the shearing stress of fluid to the shafts is effectively reduced.
The self-absorption jet flow flexible combined stirring device and the application method thereof are suitable for a gas-liquid, liquid-liquid, solid-liquid and gas-liquid-solid multiphase mixing strengthening process.
The invention has the advantages and effects that:
1. the self-priming jet flow flexible combined paddle utilizes the flexible pipes to replace the paddle, the flexible pipes are combined and arranged, and the axial position of the flexible pipes is adjusted through the positioning device. Because the distance between the two end parts of the flexible pipe and the wall surface is different, the fluid rotation motion provides pressure difference for the fluid flow in the flexible pipe, and the surrounding fluid continuously enters from the inner side of the flexible pipe in a self-suction mode and is sprayed out from the other side under the action of centrifugal force to form self-suction jet flow, so that the radial and axial mixing in the stirring kettle is improved. Meanwhile, the pipe deformation increases the disturbance to surrounding fluid, and the mixing effect of local fluid near the flexible pipe is improved. A plurality of flexible pipes form a combined paddle to form a plurality of strands of self-absorption jet flows, and the chaos mixing uniformity of the fluid is improved. The stirring device causes the chaotic mixing of the fluid, destroys the mixing isolation area of the flow field, reduces the flow dead zone and strengthens the mixing effect.
2. The deformation of the flexible pipe changes the action mode of the traditional stirring paddle on the fluid, increases the diffusion capacity of the fluid, can better transfer energy to the surrounding fluid, and is beneficial to improving the mixing uniformity of the fluid.
3. The self-priming jet flow flexible combined stirring paddle drives the fluid in the kettle to rotate, because the distances between the two end parts of the flexible pipe and the wall surface are different, pressure difference is formed during rotation, the surrounding fluid is sucked into the flexible pipe from the inner side and is ejected out from the outer side at high speed to form self-priming jet flow, and the integral mixing effect of the fluid at the center and near the wall and the fluid at the upper part and the lower part is improved.
4. The invention combines a plurality of flexible pipes to form upward and downward jet flow, thereby improving the chaos mixing uniformity of the fluid in the kettle.
5. The self-suction jet flow flexible combined stirring paddle is an axial symmetry structure distributed on a certain axial section, the axial position can be adjusted, and the fluid mixing maneuverability of the device is improved. Compared with other stirring paddles, the flexible combined paddle and the stirring shaft do not need too high rotating speed, and the service life of the paddle and the stirring shaft is prolonged. The fluid not only increases mixing flow in the radial direction and the circumferential direction, but also improves axial mixing, so that the stirring is more sufficient and thorough, and the mixing effect is obviously improved.
6. When the self-priming jet flow flexible combined stirring paddle stirs fluid, more vortexes with different scales are generated, so that the macro-mixing time is favorably shortened, the mixing efficiency of the fluid in the kettle is improved, and the self-priming jet flow flexible combined stirring paddle is suitable for practical engineering application.
Drawings
FIG. 1 is a schematic view of the device of the present invention with the flexible paddle in an "A" configuration;
FIG. 2 is a schematic view of the device of the present invention with the flexible paddle in an "H" configuration;
FIG. 3a is a schematic view of the device of the present invention with the flexible paddle in an "M" configuration;
FIG. 3b is a schematic perspective view of the flexible paddle of the present invention in an "M" shape;
FIG. 4a is a schematic view of the assembly of the flexible paddle of the device of the present invention in a "W" shape;
FIG. 4b is a schematic view of a flexible paddle of the present invention in a "W" shape;
FIG. 5a is a schematic view of the device of the present invention with the flexible paddle in an "X" configuration;
fig. 5b is a schematic perspective view of the flexible paddle of the device of the present invention in an "X" shape.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings.
The device utilizes the flexible pipe to replace the traditional stirring paddle blade, and applies the self-absorption jet flow to the stirring kettle; a plurality of flexible pipes are combined for use, so that a plurality of strands of internal flow are formed in the stirring kettle, and the chaos mixing uniformity of the fluid is enhanced. The device comprises: the stirring shaft, the self-priming jet flow flexible combination stirring paddle, the stirring kettle, the stabilizer, the discharge hole, the jacket, the feed inlet, the liquid level meter and other accessories (such as a pressure gauge, a thermometer, a demister and the like). The self-priming jet flow flexible combined stirring paddle consists of two or more paddles, and each paddle consists of a shaft sleeve, a flexible pipe and a bracket; the flexible pipe is combined by a plurality of flexible pipes, each group is more than two, and the flexible pipes are uniformly distributed relative to the stirring shaft. The axis of the flexible pipe is an inclined straight line or a curve and is uniformly distributed on the side surface of the circular truncated cone, and the cross section of the flexible pipe is in a closed form such as a circle, a square or an ellipse. The dynamic combination form of the device comprises: a. the fluid enters the stirring container from the feed inlet, and the liquid level of the fluid in the stirring kettle is monitored by a liquid level meter; b. the stirring shaft, the self-priming jet flow flexible combined stirring paddle and the stabilizer rotate under the driving of the driving device, and the temperature in the stirring kettle is controlled through the jacket; c. the flexible pipe bends reversely to the rotation motion of the fluid under the influence of the fluid flow, so that the disturbance to the surrounding fluid is increased; d. the fluid in the stirring kettle rotates, and the fluid around the self-suction jet flow flexible combined stirring paddle enters the flexible pipe from the inner side in a self-suction mode and is ejected from the outer side at high speed to form self-suction jet flow.
Example 1
The apparatus used in example 1 comprises: the stirring device comprises a stirring shaft 1, a self-priming jet flow flexible combined stirring paddle 2, a stirring kettle 3, a stabilizer 4, a discharge port 5, a jacket 6, a feed inlet 7, a liquid level meter 8 and other auxiliary parts (such as a pressure gauge, a thermometer, a demister and the like). The self-priming jet flow flexible combined stirring paddle 2 consists of two or more paddles, and each paddle consists of a shaft sleeve 21, a flexible pipe 22 and a bracket 23; the flexible pipes 22 are combined, each group is more than two, and the flexible pipes are uniformly distributed in a staggered way relative to the stirring shaft, so that an A-shaped combination is shown, as shown in figure 1.
Example 2
Example 2 is substantially the same as example 1 except that the self-priming jet flow flexible combination paddle 2 of this example is placed in the opposite position to that of example 1, and exhibits an "H" type combination, as shown in fig. 2.
Example 3
The embodiment 3 is substantially the same as the embodiment 1, except that a plurality of flexible pipes 22 distributed on the self-priming jet flow flexible combined stirring paddle 2 of the embodiment are arranged in a staggered combination at the annular section of the upper end position of the flexible pipe, and an M-shaped combination is presented, as shown in FIG. 3.
Example 4
Example 5
The embodiment 5 is substantially the same as the embodiment 3, except that the plurality of flexible tubes 22 on the self-priming jet flow flexible combined stirring paddle 2 of the embodiment are distributed at the annular section of the middle position of the flexible tubes and are arranged in a staggered combination mode, so that an X-shaped combination is shown, as shown in FIG. 5.
Claims (9)
1. A self-priming jet flow flexible combined stirring device is characterized in that: the device includes:
A. the device comprises a stirring shaft (1), a self-absorption jet flow flexible combined stirring paddle (2), a stirring kettle (3), a stabilizer (4), a discharge hole (5), a jacket (6), a feed inlet (7), a liquid level meter (8) and accessories thereof, such as a pressure gauge, a thermometer and a demister;
the self-suction jet flow flexible combined stirring paddle (2) consists of two or more paddles, and each paddle consists of a shaft sleeve (21), a flexible pipe (22) and a bracket (23); a plurality of flexible pipes (22) are combined, each group has more than two quantity, and the flexible pipes are uniformly distributed relative to the stirring shaft; the axis of the flexible pipe (22) is an inclined straight line or a curve and is uniformly distributed on the side surface of the circular truncated cone, and the cross section of the flexible pipe (22) is in a circular, square or oval closed form;
B. the dynamic combination form of the device is as follows:
a. the fluid enters the stirring container from the feeding hole (7), and the liquid level of the fluid in the stirring kettle (3) is monitored by a liquid level meter (8);
b. the stirring shaft (1), the self-priming jet flow flexible combined stirring paddle (2) and the stabilizer (4) are driven by the driving device to rotate, and the temperature in the stirring kettle (3) is controlled through the jacket (6);
c. the flexible tube (22) is bent in the opposite direction of the fluid rotation motion under the influence of the fluid flow, and the disturbance to the surrounding fluid is increased;
d. the fluid in the stirring kettle (3) rotates, and the fluid around the self-priming jet flow flexible combined stirring paddle (2) enters the flexible pipe from the inner side in a self-priming mode and is ejected from the outer side at high speed to form self-priming jet flow.
2. The self-priming jet flexible combination stirring device according to claim 1, characterized in that: the cross section of the flexible pipe (22) is gradually reduced along the jet flow direction.
3. The self-priming jet flexible combination stirring device according to claim 1, characterized in that: the flexible pipes (22) are uniformly combined and distributed on a certain annular surface, and the flexible pipes (22) of two or more paddles are arranged in a staggered manner; the flexible tubes (22) are arranged in a crossed combination along the axis.
4. The self-priming jet flexible combination stirring device according to claim 1, characterized in that: the self-priming jet flow flexible combined stirring paddle (2) adjusts the axial position through a positioning device; the lower part of the stirring shaft (1) is fixed by a bearing.
5. The self-priming jet flexible combination stirring device according to claim 1, characterized in that: the cross section structure of the bracket (23) adopts a round or square hollow tube.
6. The self-priming jet flexible combination stirring device according to claim 1, characterized in that: the stirring shaft (1), the self-priming jet flow flexible combined stirring paddle (2) and the stabilizer (4) are made of corrosion-resistant materials.
7. The self-priming jet flexible combination stirring device according to claim 6, characterized in that: the stirring shafts (1) are connected through a coupling.
8. The self-priming jet flexible combination stirring device according to claim 1, characterized in that: a demister is additionally arranged in the stirring kettle (3).
9. The self-priming jet flexible combination stirring device according to claim 1, characterized in that: the device is suitable for gas-liquid, liquid-liquid, solid-liquid and gas-liquid-solid multiphase mixing and strengthening processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110472618.8A CN113083081A (en) | 2021-04-29 | 2021-04-29 | Self-suction jet flow flexible combined stirring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110472618.8A CN113083081A (en) | 2021-04-29 | 2021-04-29 | Self-suction jet flow flexible combined stirring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113083081A true CN113083081A (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110472618.8A Pending CN113083081A (en) | 2021-04-29 | 2021-04-29 | Self-suction jet flow flexible combined stirring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113083081A (en) |
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2021
- 2021-04-29 CN CN202110472618.8A patent/CN113083081A/en active Pending
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