CN114713060A - Time-space non-homogeneous state circulation jet flow coupled size mixing device - Google Patents
Time-space non-homogeneous state circulation jet flow coupled size mixing device Download PDFInfo
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- CN114713060A CN114713060A CN202111029091.8A CN202111029091A CN114713060A CN 114713060 A CN114713060 A CN 114713060A CN 202111029091 A CN202111029091 A CN 202111029091A CN 114713060 A CN114713060 A CN 114713060A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/16—Flotation machines with impellers; Subaeration machines
- B03D1/18—Flotation machines with impellers; Subaeration machines without air supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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Abstract
The invention relates to a time-space non-homogeneous circulating jet flow coupled slurry mixing device, belongs to the technical field of coal slime separation and recovery, and solves the problem that particle medicaments in the slurry mixing device in the prior art are poor in collision effect. The jet flow circulation device comprises a stirring barrel body and a circulation jet flow assembly, wherein the stirring barrel body is of an inverted frustum structure, the circulation jet flow assembly is arranged outside the stirring barrel body, and the circulation jet flow assembly is communicated with the stirring barrel body to form a jet flow circulation passage. The time-space non-uniform circulating jet flow coupled pulp mixing device can improve the turbulence degree of ore pulp, increase the collision of granular agents in the ore pulp and be beneficial to the subsequent flotation and recovery of granules.
Description
Technical Field
The invention relates to the technical field of coal slime separation and recovery, in particular to a time-space non-homogeneous circulating jet flow coupled slurry mixing device.
Background
Flotation is the most economic and effective separation method for coal and mineral resources, and has outstanding contribution to large-scale recovery of valuable resources in fine-fraction low-grade coal and ore. The flotation process is carried out by utilizing the surface interface property of particles, the particles with good surface hydrophobicity are easy to attach with bubbles to be used as concentrate to float upwards, and hydrophilic gangue particles are left in ore pulp to be discharged as tailings. With the common application of mechanized mining and heavy medium beneficiation processes, the problems of large floating coal mud amount, large intergrowth content, narrow effective separation range and the like are increasingly highlighted. Therefore, the improvement of flotation equipment, the refining and sorting process, the widening of the flotation range and the improvement of the sorting efficiency are important measures for solving the current difficult problem of coal resources.
The slurry mixing is the basis of the accurate separation of the coal slime, and the main function of the slurry mixing is to realize the dispersion of the traditional non-polar collecting agent in the ore pulp through the high-speed shearing and stirring of an impeller, enhance the selective collision and adsorption between oil drops of the collecting agent and coal slime particles and improve the hydrophobicity difference between clean coal particles and gangue minerals. The traditional mineral flotation size mixing equipment is limited by an internal stirring structure, the mixing property of ore pulp is weak, fine particles are strong along with water, the probability of collision and adhesion with medicament molecules is low, the adaptability to the feeding condition of wide-size coal slime is poor, and the fine mud covered on the surface of coarse particles is difficult to effectively remove. The low-level size mixing result aggravates the burden of subsequent flotation operation, so that the mechanical stirring strength in the flotation machine is passively improved, the flow field environment in the flotation process is deteriorated, the desorption probability among particle bubbles is increased, and the particle flotation recovery is not facilitated.
Efficient size mixing requires removal of fine slime on the surface of clean coal particles to expose a fresh surface on one hand, and requires full dispersion of ore pulp and a medicament to achieve effective contact on the other hand. Particles in a traditional uniform flow field flow along with water flow, so that collision and friction of particle medicaments are not facilitated, and effective transmission and distribution of energy are achieved.
Disclosure of Invention
In view of the above analysis, the present invention provides a slurry mixing device for a space-time non-uniform circulating jet, so as to solve the problem of poor collision effect of particulate chemicals in the existing slurry mixing device.
The invention provides a space-time inhomogeneous circulating jet flow coupled size mixing device which comprises a stirring barrel body and a circulating jet flow assembly, wherein the stirring barrel body is of an inverted frustum structure, the circulating jet flow assembly is arranged outside the stirring barrel body, and the circulating jet flow assembly is communicated with the stirring barrel body to form a jet flow circulating passage.
Further, the upper portion is no stirring district in the agitator body, and the lower part is the stirring district, the stirring district is equipped with multistage mixing of milk room, be equipped with impeller in the mixing of milk room.
Furthermore, the diameters of the stirring impellers in the stirring area are sequentially reduced from top to bottom, the stirring impeller at the bottom end in the stirring area in the size mixing chamber is a straight-blade impeller, and the stirring impeller at the upper part in the stirring area in the size mixing chamber is an inclined-blade impeller.
Furthermore, a stirring clapboard is arranged in the stirring barrel body, is in a circular ring shape and is horizontally arranged on the inner wall of the stirring barrel body.
Further, the level is equipped with the ore pulp and shears the dish in the agitator body, the ore pulp is sheared the dish and is installed on the internal (mixing) shaft of agitator, the ore pulp shear the dish with leave the clearance between the stirring baffle.
Further, stirring impeller and ore pulp shearing disc set up in turn on the (mixing) shaft, just ore pulp shearing disc is less than stirring impeller one, the bottom of (mixing) shaft is equipped with straight leaf formula impeller.
Further, an upper circulation port and a lower circulation port are further formed in the stirring barrel body, the upper circulation port is arranged at the top in the stirring area and on the side wall of the slurry mixing chamber, and the lower circulation port is arranged at the bottom in the stirring area and on the side wall of the slurry mixing chamber.
Furthermore, the upper circulation port is not lower than the installation height of the stirring impeller in the same size mixing chamber, and the lower circulation port is positioned below the stirring impeller in the same size mixing chamber.
Furthermore, a feeding opening is formed in the bottom of the stirring barrel body, and the central axis of the lower circulating opening and the side wall of the stirring barrel body form an included angle of 30-45 degrees and are opposite to the feeding opening.
Further, the circulating jet assembly comprises a circulating pump, a circulating pipe and a jet medicine suction throat pipe, and the upper circulating port, the circulating pipe, the circulating pump, the jet medicine suction throat pipe and the lower circulating port are communicated in sequence to form the jet circulation passage.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
(1) according to the pulp mixing device, the stirring barrel body is of the inverted frustum structure, and a flow field in the stirring barrel is in a spatially non-uniform state along with the flow of the pulp, so that the turbulence degree of the pulp can be improved, the collision of granular agents in the pulp is increased, and the subsequent flotation recovery of granules is facilitated;
(2) according to the slurry mixing device, the stirring impellers in different sizes and styles are reasonably adopted, energy input is fully utilized, and the main shaft is effectively protected to reduce the abrasion of the main shaft; the design of the inverted cone-shaped barrel body and the impellers with large upper parts and small lower parts can ensure that when the medicament enters the barrel body, the medicament is fully dispersed in a small cavity space under the dual actions of the straight-blade type impeller and the circulating jet flow, the effective emulsification is realized, and then the whole ore pulp is driven to flow under the action of the large inclined-blade type impeller, so that the contact uniformity of the medicament ore pulp is promoted, the torque step is met, the stirring shaft is protected, and the fault occurrence rate is reduced;
(3) according to the slurry mixing device, the energy of the motor is input in a non-uniform manner, the flow field in the barrel presents a time non-uniform flow state, so that particle agents are favorably collided and rubbed to achieve effective transmission and distribution of the energy, a speed difference is formed between particles and water flow, a hydraulic cavitation effect is formed by surface water pressure change, and fine mud on the surface is removed;
(4) according to the pulp mixing device, circulating jet flow is adopted for sucking the chemicals, the chemicals are sucked into ore pulp by negative pressure, the chemicals are effectively dispersed and emulsified along with sudden pressure drop when water flow enters the barrel body, the straight-blade impeller forcibly stirs the chemicals, the dispersion degree of the chemicals is improved, the contact probability of particle chemicals is improved, and the dosage of the chemicals is reduced;
(5) according to the pulp mixing device, the lower circulation port and the stirring barrel body form an included angle of 30-45 degrees, and the lower circulation port and the stirring barrel body are directly opposite to the feeding port to form opposite flow so as to increase the turbulence of pulp and further strengthen the emulsification and dispersion of a medicament;
(6) according to the pulp mixing device, the turbulence of the pulp is improved by the time-space non-uniform flow field circulating jet coupling effect, the using amount of a medicament is reduced, the energy transmission and distribution efficiency is improved, the pulp pretreatment level is improved, and a foundation is laid for the next efficient flotation process;
(7) the size mixing device realizes efficient pre-selection size mixing by adopting double-channel jet circulation emulsification medicine adding and space-time non-uniform forced stirring coupling size mixing, and is beneficial to efficient flotation process development with short flow.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic structural diagram of a space-time non-uniform circulating jet flow coupling size mixing device according to an embodiment;
FIG. 2 is a top view of the space-time non-uniform circulating jet flow coupling size mixing device in an embodiment.
Reference numerals:
1, a stirring barrel body; 2, a barrel cover; 3, a motor; 4, a stirring shaft; 5, a feeding port; 6, an overflow port; 7 straight blade type impeller; 8 inclined blade type impellers; 9 stirring baffle plates; 10 stirring the clapboard; 11 a pulp shearing disc; 12 an upper circulation port; 13 lower circulation port; 14 a clear water replenishing port; 15 a medicament cartridge; 16 circulating pumps; 17 a circulation pipe; 18 jet medicine suction throat.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
In the description of the embodiments of the present invention, it should be noted that the term "connected" is to be understood broadly, and may be, for example, fixed, detachable, or integrally connected, and may be mechanically or electrically connected, and may be directly or indirectly connected through an intermediate medium, unless otherwise specifically stated or limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.
The embodiment of the invention, as shown in fig. 1 and fig. 2, discloses a space-time inhomogeneous circulating jet coupled slurry mixing device (hereinafter referred to as slurry mixing device), which comprises a stirring barrel body 1 and a circulating jet assembly, wherein the stirring barrel body 1 is of an inverted frustum structure, the circulating jet assembly is arranged outside the stirring barrel body 1 and is used for jet dosing, and the circulating jet assembly is communicated with the stirring barrel body 1 to form a jet circulating passage.
Compared with the prior art, the pulp mixing device provided by the embodiment has the advantages that the stirring barrel body is of the inverted frustum-shaped structure, and a flow field in the stirring barrel is in a spatially non-uniform state along with the flowing of the pulp, so that the turbulence degree of the pulp can be improved, the collision of particle agents in the pulp is increased, and the subsequent flotation and recovery of particles are facilitated; adopt circulation efflux to inhale the medicine, the medicament is by negative pressure suction ore pulp, and the effective dispersion emulsification of pressure drop when the stirring barrel body of falling frustum shape is got into along with rivers, is favorable to the homodisperse of medicament, improves medicament and the abundant integration of ore pulp.
In order to avoid the ore pulp in the stirring barrel body 1 from overflowing from the upper end of the stirring barrel body 1 and bearing the power unit, the upper end of the stirring barrel body 1 is provided with a barrel cover 2. The upper end of the barrel cover 2 is provided with a power unit for providing power for ore pulp stirring.
The power unit comprises a motor 3 and a power transmission mechanism, and the motor 3 transmits power to a stirring shaft 4 arranged in the stirring barrel body 1 through the power transmission mechanism.
One end of the stirring shaft 4 penetrates through the barrel cover 2 to be connected with the power transmission mechanism, and the other end is positioned in the stirring barrel body 1 and is in a cantilever shape. Specifically, a through hole is formed in the middle of the barrel cover 2, a bearing is arranged in the through hole, and the stirring shaft 4 penetrates through the bearing to be connected with the power transmission mechanism.
The power transmission mechanism can be a gear transmission mechanism, a chain wheel transmission mechanism or a belt transmission mechanism, and preferably, the power transmission mechanism is a belt transmission mechanism.
In this embodiment, motor 3 passes through belt drive mechanism and gives (mixing) shaft 4 with power transmission, compares with the meshing transmission, and belt drive mechanism simple structure, low in manufacturing cost, the installation is maintained conveniently, because the belt is rich in elasticity, can alleviate impact and vibration for the size mixing device is at size mixing in-process and operates steadily, and the during operation noise is lower.
The motor 3 is a variable frequency motor, the motor 3 rotates at a non-uniform speed, and the speed changes from 600r/s to 800r/s in a reciprocating mode to form a time-nonuniform flow field. And because the stirring barrel body 1 is a reverse-taper table type barrel body, the ore pulp flows unevenly in the stirring barrel body 1 in space, a time uneven flow field formed by the non-uniform rotation of the motor 3 is combined with a space uneven flow field formed by the reverse-taper table type stirring barrel body 1 to form a space-time uneven flow field, and the space-time uneven flow field is coupled to circulate jet flow to suck the chemicals, thereby strengthening the stirring and dispersing the chemicals, increasing the energy transmission and distribution gradient and saving the electricity.
Considering that the ore pulp in the stirring barrel body 1 needs to be diluted sometimes, the phenomenon that the ore pulp is sticky and affects the pulp mixing effect and is not beneficial to the rotation of the stirring shaft 4 is avoided, the clean water replenishing port 14 is formed in the barrel cover 2, the clean water replenishing pipe is communicated with the clean water replenishing port 14, a valve is arranged on the clean water replenishing pipe, and when the clean water needs to be replenished into the stirring barrel body 1, the valve is opened.
Understandably, in order to send the ore pulp raw material into the stirring barrel body 1 and to output the stirred ore pulp out of the stirring barrel body 1, the stirring barrel body 1 is provided with a feeding port 5 and an overflow port 6, specifically, the feeding port 5 is positioned at the lower part of the stirring barrel body 1, and the overflow port 6 is arranged at the upper part of the stirring barrel body 1.
In this embodiment, because the ore pulp in the stirring barrel body 1 is from the upward movement of below orientation, when the ore pulp of below was enough many, the ore pulp just upwards flows, and the ore pulp needs ascending thrust promptly, for the better upward movement of the ore pulp of convenience, the centre of the lower extreme of stirring barrel body 1 is located to pan feeding mouth 5, and the centre that pan feeding mouth 5 is located the little bottom surface of back taper platform promptly.
In this embodiment, the overflow port 6 is located at the upper end of the cylindrical surface of the stirring barrel body 1 and is arranged close to the barrel cover 2.
The diameter of the stirring impeller is gradually reduced from top to bottom, the diameter ratio of the uppermost stirring impeller to the lowermost stirring impeller is 4:3 to 2:1, and the diameter of the middle stirring impeller is between the upper stirring impeller and the lower stirring impeller.
A stirring clapboard 10 is arranged in the stirring barrel body 1, the stirring clapboard 10 is in a circular ring shape, and is horizontally arranged on the inner wall of the stirring barrel body 1. In this embodiment, stirring baffle 10 is equipped with 3, because stirring barrel body 1 is the desk-top structure of back taper, therefore 3 stirring baffle 10's external diameter inequality.
In order to achieve the better size mixing purpose, an ore pulp shearing disc 11 is further arranged in the stirring barrel body 1, the ore pulp shearing disc 11 is horizontally arranged in the stirring barrel body 1 and is installed on the stirring shaft 4, and the ore pulp is sheared under the driving of the stirring shaft 4.
The ore pulp shearing disc 11 is of a circular disc-shaped structure and is fixedly arranged on the stirring shaft 4, and in order to improve the shearing effect on the ore pulp, a plurality of long holes are symmetrically formed in the ore pulp shearing disc 11 and are arranged in the circumferential direction along the radial direction of the ore pulp shearing disc 11. One side edge of the long hole is turned downwards, and the lower turning edge is lower than the lower surface of the ore pulp shearing disc 11.
In this embodiment, the slurry shearing disk 11 is provided with a long hole, which can be used for passing slurry and can increase shearing force by using the edge of the long hole turned downwards.
The quantity of the ore pulp shearing disc 11 is one less than that of the stirring partition plate 10, the ore pulp shearing disc 11 is just opposite to the stirring partition plate 10 from the lower end of the stirring barrel body 1, and a gap is reserved between the ore pulp shearing disc 11 and the stirring partition plate 10 and used for allowing coarse particles in ore pulp to pass through, so that the coarse particles in the ore pulp are prevented from causing the stirring impeller to clamp the shell.
In this embodiment, ore pulp shearing disc 11 is equipped with 2, just sets up with two stirring baffle 10 of locating stirring barrel 1 inside below respectively.
It should be noted that, on the stirring shaft 4, the stirring impeller and the slurry shearing disk 11 are alternately arranged, the end of the stirring shaft 4 is provided with the stirring impeller, and the slurry shearing disk 11 and the stirring impeller are sequentially and alternately arranged upwards.
The stirring barrel body 1 is divided into a plurality of size mixing chambers through the stirring partition plates 10 and the pulp shearing discs 11, namely adjacent size mixing chambers are separated by the stirring partition plates 10 and the pulp shearing discs 11.
In order to effectively reduce the diameter of the medicament liquid drop and promote the dispersion of the medicament, the stirring impeller in the size mixing chamber at the lowermost end in the stirring barrel body 1 is a straight-blade impeller 7, and the other size mixing chambers are provided with inclined-blade impellers 8. Adjusting device adopts the design of little space high shear to make the medicament in the very first time that gets into stirring barrel body 1, and the medicament liquid drop is as little as possible, and the medicament disperses as far as possible, then through the lower turbulent flow that follows, the even effective mixed medicament of stirring in great space and ore pulp improve medicament effect.
In this embodiment, three sections of size mixing chambers in the stirring barrel body 1 are a first size mixing chamber, a second size mixing chamber and a third size mixing chamber from bottom to top respectively, a straight blade type impeller 7 is arranged in the first size mixing chamber and used for forming sufficient preliminary turbulence, inclined blade type impellers 8 are arranged in the second size mixing chamber and the third size mixing chamber and used for matching with an ore pulp shearing disc 11 to form the internal circulation of the size mixing chamber, and the high-energy straight blade type impeller 7 can effectively reduce the diameter of liquid drops of a medicament and promote the dispersion of the medicament and the sufficient mixing of the medicament and the ore pulp.
Still be equipped with stirring baffle 9 in the stirring barrel body 1, stirring baffle 9 is equipped with 4 with the same gradient of stirring barrel body 1's inner wall, and stirring baffle 9 evenly lays along stirring barrel body 1's inner wall axial, and stirring baffle 9 is located between the stirring baffle 10.
In this embodiment, stirring baffle 9 is located in second size mixing room and the third size mixing room, and stirring baffle 9 cooperates oblique leaf formula impeller 8 reinforcing to the stirring effect of ore pulp.
In order to circulate the ore pulp in the stirring barrel body 1, an upper circulation port 12 and a lower circulation port 13 are further formed in the stirring barrel body 1. The upper circulation port 12 is arranged on the side wall of the uppermost pulp mixing chamber and is not lower than the mounting height of the stirring impeller in the homodyne pulp mixing chamber, and the lower circulation port 13 is arranged on the side wall of the lowermost pulp mixing chamber and is positioned below the stirring impeller in the homodyne pulp mixing chamber.
In this embodiment, the upper circulation port 12 is not lower than the height of the stirring impeller in the cylindrical size mixing chamber, which means that the center of the upper circulation port 12 is not lower than the horizontal symmetry plane of the stirring impeller.
In this embodiment, the upper circulation port 12 is disposed on the side wall of the third slurry mixing chamber and is not lower than the inclined-blade impeller 8 in the third slurry mixing chamber, and the lower circulation port 13 is disposed on the side wall of the first slurry mixing chamber and is located below the straight-blade impeller 7 in the first slurry mixing chamber.
It should be noted that the inner cavity of the stirring barrel 1 is divided into two parts, the upper region is a non-stirring region, and the lower region is a stirring region, i.e. a multi-stage mixing chamber, that is, in this embodiment, the upper portion of the third mixing chamber is a non-stirring region.
The upper circulation port 12 is arranged in the multi-section pulp mixing chamber and is positioned at the upper end of the multi-section pulp mixing chamber, so that the problem that when the machine is stopped due to the fact that the upper circulation port 12 is arranged in a non-stirring area, pulp can flow backwards to the circulation port to block a medicament passage to cause serious faults is solved, and the problem that partial short circuit and incomplete circulation of the pulp are caused due to the fact that the upper circulation port 12 is arranged below the uppermost stirring impeller (the inclined blade type impeller 8 in the third pulp mixing chamber in the embodiment) is solved.
The central axis of the lower circulation port 13 and the side wall of the stirring barrel body 1 form an included angle of 30-45 degrees, and the lower circulation port and the side wall are directly opposite to the feeding port 5 to form opposite flow and increase the turbulence degree of ore pulp.
The circulating jet flow component comprises a circulating pump 16, a circulating pipe 17 and a jet flow medicine suction throat pipe 18, and an upper circulating port 12, the circulating pipe 17, the circulating pump 16, the jet flow medicine suction throat pipe 18 and a lower circulating port 13 are sequentially connected to form a jet flow circulating passage.
The jet flow medicine suction throat pipe 18 is also provided with a medicine barrel 15, the jet flow medicine suction throat pipe 18 is a Venturi tube, the inlet end of the Venturi tube is communicated with the upper circulation port 12 through a circulating pump 16 and a circulating pipe 17, and the diffusion end lower circulation port 13 of the Venturi tube is communicated.
In this embodiment, adopt circulation efflux to inhale the medicine, the ore pulp is inhaled by the negative pressure to the medicament, along with rivers effectively disperse the emulsification by the sudden pressure drop when entering stirring barrel body 1, straight leaf formula impeller 7 forces the stirring to improve medicament dispersion degree, improves granule medicament contact probability, reduces the medicament quantity.
In order to improve the stirring effect of ore pulp, the circulation efflux subassembly is equipped with 2, and the symmetric distribution is in the both sides of stirring staving 1, and understandably, upper circulation mouth 12 and lower circulation mouth 13 symmetry are equipped with two sets ofly.
In this embodiment, the ore slurry enters from the feeding port 5, and is strongly stirred and dispersed by the straight blade impeller 7 of the first slurry mixing chamber, and then is transported by the inclined blade impeller 8 to enter the next slurry mixing chamber from the gap between the ore slurry shearing disk 11 and the stirring partition plate 10, when the ore slurry reaches the third slurry mixing chamber, a part of the ore slurry flows out from the upper overflow port 6 to become a stirring product, a part of the ore slurry is sucked into the circulating jet section from the upper circulating port 12, and a chemical is sucked in from the chemical tank 15 by the negative pressure of the jet medicine suction throat 18, and is sprayed into the stirring tank body 1 at the lower circulating port 13, and forms the dispersion of the counter-flow enhancing chemical with the feeding port 5.
The mixing of pulp device of this embodiment utilizes 1 abundant rotational speed dispersion medicaments that improve of back taper platform shape stirring barrel body, when promoting the even contact of mineral particle and medicament, protects (mixing) shaft 4 as far as possible, reduces (mixing) shaft 4 moment of torsion and reduces the fault incidence. The design of back taper platform shape staving and big-end-up's impeller can guarantee that the medicament is when getting into the staving, and is fully dispersed in less cavity space under straight leaf formula impeller and circulation fluidic dual function, and effective emulsification drives whole ore pulp and flows under the effect of great oblique leaf formula impeller afterwards, makes the contact of medicament ore pulp even to accord with the moment of torsion substep, protection (mixing) shaft 4 reduces the fault incidence.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a size mixing device of time-space inhomogeneous state circulation efflux coupling which characterized in that, includes stirring barrel body (1) and circulation efflux subassembly, stirring barrel body (1) is back taper platform column structure, the circulation efflux subassembly is located the outside of stirring barrel body (1), the circulation efflux subassembly with stirring barrel body (1) intercommunication forms efflux circulation route.
2. The space-time inhomogeneous circulating jet flow coupled mixing device as claimed in claim 1, wherein the upper part of the mixing drum body (1) is a non-mixing zone, the lower part of the mixing drum body is a mixing zone, the mixing zone is provided with a multi-section mixing chamber, and the mixing chamber is internally provided with a mixing impeller.
3. The space-time inhomogeneous circulating jet flow coupled mixing device according to claim 2, wherein the diameters of the mixing impellers in the mixing zone are sequentially reduced from top to bottom, the mixing impeller in the mixing chamber at the bottom end in the mixing zone is a straight blade impeller (7), and the mixing impeller in the mixing chamber at the upper part in the mixing zone is an inclined blade impeller (8).
4. The space-time inhomogeneous circulating jet flow coupled size mixing device according to claim 3, wherein a stirring partition plate (10) is arranged in the stirring barrel body (1), and the stirring partition plate (10) is annular and horizontally arranged on the inner wall of the stirring barrel body (1).
5. The space-time non-uniform circulating jet coupled size mixing device according to claim 4, wherein a pulp shearing disk (11) is horizontally arranged in the stirring barrel body (1), the pulp shearing disk (11) is installed on the stirring shaft (4) in the stirring barrel body (1), and a gap is reserved between the pulp shearing disk (11) and the stirring partition plate (10).
6. The space-time non-uniform circulating jet coupled mixing device according to claim 5, characterized in that the mixing impellers and the slurry shearing discs (11) are alternately arranged on the mixing shaft (4), and the slurry shearing discs (11) are one less than the mixing impellers, and the bottom end of the mixing shaft (4) is provided with the straight-blade impeller (7).
7. The space-time inhomogeneous circulating jet flow coupled size mixing device as claimed in claim 2, wherein an upper circulating port (12) and a lower circulating port (13) are further formed in the stirring barrel body (1), the upper circulating port (12) is formed in a side wall of the size mixing chamber at the top in the stirring area, and the lower circulating port (13) is formed in a side wall of the size mixing chamber at the bottom in the stirring area.
8. The space-time inhomogeneous circulating jet coupled mixing device as claimed in claim 7, wherein said upper circulating port (12) is not lower than the installation height of said stirring impeller in the same mixing chamber, and said lower circulating port (13) is located below said stirring impeller in the same mixing chamber.
9. The space-time inhomogeneous circulating jet flow coupled size mixing device as claimed in claim 7, wherein a material inlet (5) is arranged at the bottom of the stirring barrel body (1), and an included angle of 30-45 degrees is formed between the central axis of the lower circulating port (13) and the side wall of the stirring barrel body (1), and the central axis of the lower circulating port is opposite to the material inlet (5).
10. The space-time non-uniform circulating jet coupled size mixing device as claimed in claims 7-9, wherein the circulating jet assembly comprises a circulating pump (16), a circulating pipe (17) and a jet medicine suction throat (18), and the upper circulating port (12), the circulating pipe (17), the circulating pump (16), the jet medicine suction throat (18) and the lower circulating port (13) are sequentially communicated to form the jet circulating passage.
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