CN111468411A - Spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method - Google Patents
Spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method Download PDFInfo
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- CN111468411A CN111468411A CN202010286124.6A CN202010286124A CN111468411A CN 111468411 A CN111468411 A CN 111468411A CN 202010286124 A CN202010286124 A CN 202010286124A CN 111468411 A CN111468411 A CN 111468411A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B15/00—Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/20—Reducing volume of filled material
- B65B1/22—Reducing volume of filled material by vibration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
- B65B1/32—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by weighing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
- B65B39/06—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers
- B65B39/08—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers by means of clamps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
- B04C2009/002—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with external filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
- B04C2009/005—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with external rotors, e.g. impeller, ventilator, fan, blower, pump
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Abstract
The invention provides a spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method, which comprises a scattering device, a grading device and a packaging device, and belongs to the technical field of peanut processing, wherein the grading device comprises a grading cavity, the grading cavity comprises a cylindrical part and a conical part arranged at the lower side of the cylindrical part, an air inlet and an air inlet are symmetrically and tangentially arranged at the middle position of the cylindrical part, a cylindrical screen grading cavity coaxial with the cylindrical part is arranged in the cylindrical part, and a grading impeller coaxial with the cylindrical part is arranged in the screen grading cavity; the broken superfine powder is classified for the first time through rotating airflow formed by an air inlet feeding hole and an air inlet, the superfine powder with the grain diameter larger than the aperture of a screen mesh is classified for the second time by the screen mesh matched with the rotating airflow, and the superfine powder is classified for the third time by a classifying impeller matched with high-speed rotating airflow; the problems that the control of the grading granularity of the superfine powder is not easy, the grading precision is low, the packaging efficiency is low, and the compacting effect is poor are solved, and the scattering efficiency, the grading efficiency and the packaging efficiency of the superfine powder of the peanut shells are greatly improved.
Description
Technical Field
The invention relates to the technical field of peanut processing, in particular to a spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The physical and chemical properties of the ground peanut shells are changed after the superfine grinding, the grain size reaches about 300 meshes, the cell walls are broken, and different purposes of the ground peanut shells are determined by different grinding degrees, as shown in the following table:
the superfine peanut shell superfine powder grading packaging method has the advantages that the superfine peanut shell superfine powder grading packaging is the last but crucial procedure of a deep processing assembly line, the requirement on raw materials is more and more strict, the superfine peanut shell superfine powder grading packaging is required to be superfine, the particle size distribution of the superfine powder is required to be uniform and reasonable, namely the particle size of the materials can not be too large or too small within a certain range, the powder produced by a mechanical method is in a large particle size distribution range, the requirement on the superfine powder in the certain particle size range is often not met, the peanut shell powder is required to be graded, the powder has large specific surface area and high specific surface energy, spontaneous coagulation and agglomeration are easily generated in the preparation and processing processes, the agglomerated fine particles are often represented as coarse particles, the excellent grading effect is not achieved, the superiority of the powder cannot be fully exerted, the performance of new materials is degraded, the full dispersion of the materials and the improvement of the grading precision of the superfine peanut shell are very important, the automatic air discharge and the automatic air discharge control of the superfine peanut shell packing device is very important, the automatic air discharge and the automatic air discharge of the superfine packaging is realized, the L, and the automatic air discharge is very important research of the superfine packaging.
In the prior art, the methods for realizing the classification of the ultra-micro powder mainly comprise the following steps: (1) classification can be divided into dry classification and wet classification according to the medium used; (2) there are two broad categories of whether or not there are moving parts: static grading and dynamic grading. Common classification equipment is gravity classifier, inertial classifier, cyclone separator, spiral air classifier, jet classifier, turbine classifier, etc.
The inventor of the present disclosure finds that the existing classification equipment has the problems of powder agglomeration, low classification precision, complex post-treatment and the like; the traditional powder packaging method is characterized in that an electronic platform is used for weighing, manual bagging is used for bagging and packaging, and then a vacuum sealing machine is used for vacuumizing and sealing.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method, the system integrates four functions of peanut shell superfine powder scattering, grading, automatic weighing and dense packaging, the peanut shell superfine powder is fully scattered through the shearing action of a double-head spiral blade and the high-speed impact of drying air flow, and the influence of superfine powder agglomeration and caking is avoided; high-precision grading of the peanut shell bulk materials is realized through high-speed rotation of symmetrical tangential air flow in a grading cavity of a screen, separation of the screen and high-speed rotation of a grading impeller; accurate quantification is realized by attaching four weighing hoppers with gravity sensor brackets; through the combined action of the vibrating compaction mechanism and the beating compaction mechanism, the compaction and packaging of the superfine peanut shell powder are realized.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
the first aspect of the disclosure provides a spiral scattering cyclone grading peanut shell superfine powder grading packaging system.
A spiral scattering cyclone grading peanut shell superfine powder grading packaging system comprises a scattering device, a grading device and a packaging device which are sequentially connected, wherein the peanut shell superfine powder is scattered by the scattering device and then is output to the grading device, and the grading device grades the scattered peanut shell superfine powder and then outputs the graded peanut shell superfine powder to the packaging device for packaging;
the grading device comprises a grading cavity, the grading cavity comprises a cylindrical part and a conical part arranged on the lower side of the cylindrical part, an air inlet and an air inlet are symmetrically and tangentially arranged in the middle of the cylindrical part, a cylindrical screen grading cavity coaxial with the cylindrical part is arranged in the cylindrical part, and a grading impeller coaxial with the cylindrical part is arranged in the screen grading cavity;
the superfine powder after being scattered is classified for the first time through the rotary air flow formed by the air inlet feeding hole and the air inlet, the superfine powder with the grain diameter larger than the aperture of the screen mesh is classified for the second time through the cooperation of the screen mesh and the rotary air flow, and the superfine powder is classified for the third time through the cooperation of the classifying impeller and the high-speed rotary air flow.
As some possible implementation manners, the scattering device comprises a double-end spiral scattering feeding device, the double-end spiral scattering feeding device comprises a spiral feeding cavity, a double-end spiral screw rod is arranged in the spiral feeding cavity, double-end spiral blades are fixed on the double-end spiral rod, and the double-end spiral scattering feeding device is fed to a discharge port of the double-end spiral scattering feeding device after the superfine powder is scattered through the shearing action of the double-end spiral blades.
As further injects, double-end spiral is broken up material feeding unit and is included the buffer hopper for accept the peanut shell ultramicro powder and get into spiral pay-off cavity, the buffer hopper includes the trapezoidal plate that four inclination are different, four trapezoidal plates end to end connection constitutes trapezoidal platform shape passageway in proper order.
As further injects, the scattering device further comprises an air flow scattering feeding device, the air flow scattering feeding device comprises a Venturi tube type tee joint, the Venturi tube type tee joint comprises a contraction tube, a throat tube and a diffusion tube, the contraction tube impacts a double-head spiral received by the Venturi tube type tee joint after flowing through the throat tube to scatter the superfine powder scattered by the feeding device, and the scattered powder is output to an air inlet and an air outlet of the grading device through the diffusion tube.
As some possible realization modes, the air inlet and the air outlet are both provided with 20-degree necking angles, and the cross section of the air inlet and the air outlet is square.
As possible realization modes, an oval bottom plate inclined at a preset angle is arranged at the bottom of the screen classification cavity, and powder with the particle size larger than the aperture of the screen falls to the oval bottom plate along the screen and is output through a coarse powder discharge pipe; the powder with the particle size smaller than the aperture passes through the screen mesh, enters the medium powder grading chamber and is output through the medium powder discharge pipe below the conical part.
As some possible implementation manners, the grading impeller is fixed between the grading impeller upper support and the grading impeller lower support, grading impeller blades are fixed on the grading impeller, and the grading impeller is fixed on the motor rotating shaft;
the fine powder is carried to an upper vortex along with an upward airflow, the motor drives the grading impeller to intercept particles with large particle sizes carried by the fine powder through collision by the blades of the grading impeller, the fine powder is graded again under the action of the screen, and the non-intercepted fine powder enters the grading impeller and then enters a fine powder discharge pipe welded at the center of the top plate of the cylinder part along with the airflow.
As some possible implementation manners, packing plant includes feed hopper and weighing hopper, and the submicron powder after the grading of grading plant output gets into weighing hopper through feed hopper, weighing hopper sets up in the backup pad, weighing hopper bottom is equipped with a plurality of evenly distributed's the bracing piece of installing gravity sensor for the weight of measurement submicron powder.
As a further limitation, the bottom of the weighing funnel is connected with a blanking pipeline, and two sides of the blanking pipeline are connected with a clamping machine arm through bolts and used for fixing a packaging bag;
the vibration compacting mechanism comprises a vibration platform, a vibration platform bracket and springs, and four corners and the center of the vibration platform are connected with the vibration platform bracket through the springs; patting closely knit mechanism including patting the disc, patting a push rod of disc center fixed connection and pierce through in rear side frame, promote to pat the disc through the push rod and pat the wrapping bag.
The second aspect of the disclosure provides a spiral scattering cyclone grading peanut shell superfine powder grading packaging method, and the spiral scattering cyclone grading peanut shell superfine powder grading packaging system of the first aspect of the disclosure is utilized;
the superfine peanut shell powder is fully scattered by the scattering device, enters the grading cavity through the air inlet and the air outlet under the action of air flow, and the vortex in the grading cavity of the screen is divided into an upper vortex and a lower vortex by taking the air inlet and the air outlet as boundaries;
under the action of the lower vortex, the peanut shell superfine powder falls along the sieve in a rotating way, and particles with the particle size smaller than the aperture pass through the sieve, enter the medium powder grading chamber and fall along the medium powder discharge pipe;
when the particle size is larger than the aperture, the particles fall to an inclined bottom plate with a smooth surface along the screen mesh and slide to a coarse powder discharge port, and meanwhile, the screen mesh is continuously washed by air flow, so that the screen mesh is prevented from being blocked;
the fine powder is carried to an upper vortex along with an upward airflow when the radial resultant force applied to the fine powder points to the center, the particles with large particle sizes entrained in the fine powder are intercepted by a grading impeller rotating at a high speed through the peripheral blades of the grading impeller through collision, the fine powder is graded again under the action of a screen, and the fine powder enters a fine powder discharging pipe along with the airflow after entering the grading impeller;
and (4) grading the superfine peanut shell powder by a grading device, and then feeding the superfine peanut shell powder into a packaging device through each discharge pipe for packaging.
Compared with the prior art, the beneficial effect of this disclosure is:
1. according to the spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method, the scattering feeding device is designed, the peanut shell superfine powder is fully scattered by the shearing action of the double-head spiral blade and the high-speed impact of the drying air flow, the phenomenon that the peanut shell superfine powder is agglomerated and agglomerated before grading can be solved, the scattering is fully realized, and the grading precision is improved.
2. According to the spiral scattering cyclone grading peanut shell superfine powder grading packaging system, the air inlet and the air inlet are provided with the necking, so that the stability of a flow field can be maintained, and the internal speed of a grading cavity is increased; the symmetry and stability of the flow field in the screen classification cavity can be enhanced by the symmetrical tangential arrangement; is disposed at the middle position of the cylindrical part, and realizes high-precision classification.
3. According to the spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method, high-speed rotation of symmetrical tangential air flow in the screen grading cavity, separation of the screen and high-speed rotation of the grading impeller are adopted, high-precision grading of peanut shell bulk materials is achieved, particle size distribution is more uniform, and the doping degree of powder is reduced.
4. According to the spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method, 4 supporting rods provided with gravity sensors are arranged between the supporting plate and the weighing hopper to be connected, and the weighing precision can be guaranteed by detecting the weight through the gravity sensors.
5. The spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method provided by the disclosure realize the compacting work of the peanut shell superfine powder in the packaging process through the cooperation of the vibrating compacting mechanism and the beating compacting mechanism, reduce the packaging cost and provide convenience for subsequent transportation.
6. The spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method provided by the disclosure are integrated by a plurality of systems, have high automation degree, can be used for large-batch production operation, shorten labor time, save labor force, reduce processing cost, and better solve the problems of difficulty in superfine powder grading particle size control, low grading precision, low packaging efficiency and poor compacting effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is an isometric view of a spiral breaking cyclone grading peanut shell ultra-fine powder grading packaging system provided in example 1 of the present disclosure.
Fig. 2 is an axial view of the scattering and feeding device provided in embodiment 1 of the present disclosure.
Fig. 3 is an exploded view of the double-ended auger break-up feeding device provided in embodiment 1 of the present disclosure.
Fig. 4 is a cross-sectional view of a double-ended helical break-up feeding device provided in embodiment 1 of the present disclosure.
Fig. 5 is a force analysis diagram of the double-ended helical break-up feeding device provided in embodiment 1 of the present disclosure.
Fig. 6 is a motion analysis diagram of the double-ended helical break-up feeding device provided in embodiment 1 of the present disclosure.
Fig. 7 is a cross-sectional view of a venturi-type tee provided in embodiment 1 of the present disclosure.
Fig. 8 is an axial view of a cyclone screen plate classifier provided in embodiment 1 of the present disclosure.
Fig. 9 is a partial sectional view of a cyclone screen plate grading device provided in embodiment 1 of the present disclosure.
Fig. 10 is a top view of the internal structure of a chamber of a cyclone sieve plate grading device provided in embodiment 1 of the present disclosure.
Fig. 11 is an exploded view of a cyclone screen plate classifier provided in embodiment 1 of the present disclosure.
Fig. 12 is an isometric view of a staged impeller provided in accordance with example 1 of the present disclosure.
Fig. 13 is an isometric view of a quantitative solid packaging device provided in example 1 of the present disclosure.
Fig. 14 is an isometric view of a weighing mechanism provided in embodiment 1 of the present disclosure.
In the figure, a scattering feeding device I, a cyclone sieve plate grading device II and a quantitative dense packaging device III are arranged;
i-01-double-head spiral scattering feeding device, I-02-high-speed airflow scattering feeding device, I-03-spiral feeding cavity support, II-01-air inlet, II-02-air inlet, II-03-cylindrical part, II-04-conical part, II-05-cylindrical part top plate, II-06-screen grading device, II-07-grading impeller grading device, II-08-medium powder grading chamber, II-09-medium powder discharging pipe, II-10-coarse powder discharging pipe, II-11-fine powder discharging pipe, II-12-medium powder outlet butterfly valve and II-13-screen grading chamber;
III-01-a feeding funnel, III-02-a butterfly valve of the feeding funnel, III-03-a weighing mechanism, III-04-a packaging and blanking pipeline, III-05-a clamping machine arm, III-06-a bolt, III-07-a clamping ring, III-08-a vibration compacting mechanism, III-09-a beating compacting mechanism, III-10-a conveyor belt, III-11-a transportation rack, III-12-a display screen, III-13-a control cabinet and III-14-a button;
i-0101-storage silo, I-0102-buffer hopper, I-0103-spiral feeding cavity, I-0104-double-head spiral screw, I-0105-spiral blade, I-0106-discharge port, I-0107-spiral feeding motor, I-0108-discharge funnel, I-0201-air compressor, I-0202-air storage tank, I-0203-air dryer, I-0204-Venturi tube type tee, I-0205-shrinkage pipe, I-0206-throat pipe and I-0207-diffusion pipe;
II-0101-air inlet throat, II-0201-air inlet throat, II-0601-screen, II-0602-bottom plate, II-0603-screen support frame, II-0604-screen grading cavity, II-0701-grading impeller, II-0702-grading impeller blade, II-0703-grading impeller upper support, II-0704-grading impeller lower support, II-0705-speed reducing motor, II-0706-synchronous belt, II-0707-small synchronous wheel, II-0708-large synchronous wheel and II-0709-rotating shaft;
III-0301-weighing hopper, III-0302-weighing hopper butterfly valve, III-0303-gravity sensor, III-0304-supporting plate, III-0305-supporting bar, III-0306-weighing mechanism cabinet door, III-0801-vibration platform, III-0802-vibration platform support, III-0803-spring, III-0901-beating disk and III-0902-push rod.
Detailed Description
The present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
As introduced in the background art, the inventor finds that the grading and packaging effect of the existing superfine powder grading and packaging device is not ideal, the defects of low grading precision and inaccurate quantification exist generally, and in order to solve the technical problems, the invention provides a spiral scattering cyclone grading peanut shell superfine powder grading and packaging system.
The utility model discloses and provides a spiral scattering cyclone grading peanut shell superfine powder grading and packaging system, which comprises a scattering and feeding device, a cyclone sieve plate grading device and a quantitative dense packaging device, wherein the scattering and feeding device is arranged at the left side of the cyclone sieve plate grading device, and the quantitative dense packaging device is arranged below the cyclone sieve plate grading device;
the bulk material is continuously and uniformly conveyed by the scattering and feeding device through the cyclone sieve plate grading device, the cyclone sieve plate grading device grades the superfine powder of the peanut shell for three times, the bulk material is graded for one time through high-speed rotating airflow, the sieve grading device is matched with the high-speed rotating airflow to grade granules with large particle sizes for two times, the grading impeller grading device is matched with the high-speed rotating airflow to grade the doped powder for three times, the graded powder falls into a weighing mechanism of a quantitative dense packaging device, the superfine powder in a cloth bag is dense through a vibration dense mechanism and a patting dense mechanism, and the superfine powder is conveyed through a conveyor belt and works circularly.
Example 1
The invention is further explained below with reference to the figures and examples;
referring to fig. 1, which is an isometric view of the system of this embodiment, it can be seen that the present invention generally comprises three major parts, namely, a bulk feeder i, a cyclone screen plate classifier ii, and a quantitative bulk packaging unit iii.
Referring to the attached drawing 2, the scattering and feeding device I comprises a double-head spiral scattering and feeding device I-01 and a high-speed airflow scattering and feeding device I-02, wherein a discharge port I-0106 of the double-head spiral scattering and feeding device I-01 is connected with the high-speed airflow scattering and feeding device I-02 through a Venturi tube type tee joint I-0207.
Double-end spiral scattering and feeding device includes storage silo I-0101, and storage silo I-0101 below sets up buffer funnel I-0102, and buffer funnel I-0102 welds in spiral pay-off cavity I-0103 top, and buffer funnel I-0102's four walls gradient diverse, and its effect makes the speed differentiation of the direction that falls down of peanut shell ultramicro powder from buffer funnel, and then makes powder falling speed produce the differentiation and avoid arching.
The constant-diameter and constant-pitch double-head spiral screw is arranged in the spiral feeding cavity, the gap between the double-head spiral screw and the spiral feeding cavity is set to be 4mm, the double-head spiral screw I-0104 is driven by the spiral feeding motor I-0107, and the powder material is fully scattered and conveyed to the discharge hole under the shearing action of the double-head spiral blade I-0105; the air flow introduced from the air compressor I-0201 sequentially passes through the air storage tank I-0202 and the air dryer I-0203, and the air dryer is used for fully drying air and reducing external factors of powder material agglomeration.
Airflow flows through the venturi tube type tee joint I-0204 throat pipe I-0206, the airflow is accelerated rapidly, meanwhile, the peanut shell superfine powder enters the venturi tube type tee joint I-0204 under the suction effect of negative pressure adsorption generated by the self gravity and the throat pipe I-0206, high-speed airflow generates a strong impact effect on the superfine powder, and the agglomerated superfine powder is crushed and completely scattered.
Referring to the attached drawings 3-6, a double-end spiral screw I-0104 with equal diameter and equal spiral is connected in the spiral feeding cavity, and the following detailed description is given to the components of the double-end spiral scattering and feeding device I-02:
the shape of the double-end helical blade I-0105 is a helical curved surface. When the rotating shaft is driven to rotate, the spiral blades exert normal thrust F on the peanut shell superfine powder at any radius r1The thrust and the friction force F between the material and the blades2Synthesized as a force F, which is resolved with a radial component F3The material is pushed to move forwards (move transversely), and the other component F of the resultant force4Is vertically downwards, this force component urges the material away from the blade, due to F3And F4Under the combined action of the spiral blades, the materials can not rotate together with the spiral blades and only do axial movement along with the trough under the action of normal thrust and axial component force exerted by the spiral blades.
According to the force-motion analysis chart, the following results can be obtained:
Vhcosβ＝V0sinα，
and:
therefore, the method comprises the following steps:
peripheral velocity V of the particlesz：
Because:
order:
f＝tanβ
then it follows: peripheral speed:
axial speed:
in the formula, the pitch of the S-screw is mm; n-the rotation speed of the spiral shaft, r/min;
r is the distance between the powder particles M and the axis of the screw rod, and is mm, α is the helix surface lead angle;
f is the friction coefficient of the particles and the helical surface; vh-the speed of engagement;
V0-the speed of the involving movement of the submicron particles;
selecting the rotating speed of the screw:
the rotating speed of the screw can influence the amount of heat generated and the temperature of materials, and the rotating speed of the screw is high, so that the shearing force is large, and the temperature of the rising materials is high; the screw speed is slow and the shear force is small, resulting in a low elevated material temperature. However, the faster the screw speed, the better the mixing action, the faster the screw speed, the higher the shearing force and the higher the mixing force, but the shorter the mixing time, the better the mixing effect of the polymer material is not necessarily achieved.
The screw speed is determined by the following derivation:
in the formula: theta-the pitch angle of the helical blade;
γ0-the angle between the absolute speed of movement of the submicron particles and the horizontal line;
g-gravitational acceleration; f. of1-the coefficient of friction between the particles and the shell;
R1-average radius of the particles from the axial center;
the number of the thread heads is selected as follows:
the number of thread starts is generally divided into single start threads, double start threads and triple start threads. The single-head thread element has thick screw edge and small leakage gap; the double-thread element has a low shearing effect and is mainly used for conveying powder; the three-head screw element has higher shearing action and shallow screw groove and is mainly used for melting materials. Under the condition of the same thread pitch, the double-thread lead is twice of the single-thread lead, and the thread with the large lead has small axial stress of the micro-powder particles and relatively reduced heat generation. Considering that the heat resistance of the peanut shell superfine powder is poor, if the temperature rises too much in the feeding process, the peanut shell superfine powder is denatured, and the original value of the peanut shell superfine powder is lost, so that the double-thread screw is selected. On the premise of conveying materials and scattering agglomerated peanuts and superfine powder, the temperature inside the spiral feeding cavity is ensured to be stabilized within a proper range.
Referring to the attached figure 7, the Venturi tube type tee I-0204 comprises a long tube formed by a contraction tube I-0205, a throat tube I-0206 and a diffusion tube I-0207 and a discharge funnel I-0108, and the Venturi tube type tee is explained in detail as follows:
after the air is fed into the contraction pipe by means of air dryer, the air is accelerated gradually, and forced to pass through the throat at high speed, and the air speed is reduced by means of diffusion pipe, so that according to Bernoulli's equation and continuous equation, negative pressure is produced at the throat, and the superfine powder can be sucked into the Venturi tube type tee joint from discharge hopper and mixed with high-speed air flow.
When the fluid passage area is suddenly narrowed at the constriction tube, the flow rate is increased, so that the particle concentration is increased; and when the fluid passage area is abruptly widened at the diffuser pipe, the flow rate is reduced, so that the particle concentration is reduced. Therefore, the probability of mutual collision of the particles is increased, the particles are promoted to be dispersed and the agglomerated particles are decomposed, and the agglomerated particles entering the cyclone sieve plate grading device are almost not existed.
The operating principle of a venturi can be expressed in terms of bernoulli's equation and continuity equation. For this purpose, the two section line equations of the shrinkage pipe and the throat pipe can be solved according to an energy equation and a continuity equation.
Taking the tube axis as a reference, firstly neglecting the resistance, and obtaining the following equation:
Q′＝1V1＝2V2
namely, it is
Is obtained by the above two formulas
Thus:
in the formula, delta h is the water head difference of the two section piezometer tubes; k is the venturi meter constant, constant for a given pipe diameter.
Due to the resistance, the actual flow Q is always less than Q'. A dimensionless coefficient μ is introduced as Q/Q' (μ is referred to as a flow rate coefficient), and the calculated flow rate value is corrected.
Therefore, the first and second electrodes are formed on the substrate,
wherein mu is 0.98-0.99
Referring to fig. 8-12: the air inlet and outlet II-01 and the air inlet II-02 are symmetrically and tangentially arranged in the middle of the cylindrical part of the cavity, have the same structure, are both provided with 20-degree necking angles, and have square cross sections, which are explained in detail as follows:
an air inlet of the traditional cyclone classifier is positioned at the top, the axial speed of a side wall area is a negative value, and airflow flows downwards; except that the axial speed in the small central area is a negative value, the axial speed in most areas inside the classifier is a positive value, which indicates that the airflow basically rotates and rises, and the maximum speed value of the airflow rising is 0.4-0.46 times of the inlet air speed.
The grading plant described in this embodiment, use the air intake as the boundary, two vortexes about the classifier forms, the airflow axial velocity distribution form of lower vortex is similar with traditional cyclone classifier, the outside is down air current, the inboard is up air current, the center appears the adverse current, but the speed of up air current obviously reduces than traditional type cyclone classifier, this is favorable to the timely subside of middlings, reduces the running loss of coarse product.
The axial velocity of the upper vortex of the part above the air inlet is a positive value, the maximum axial velocity is basically the same as that of the traditional cyclone classifier, the space airflow flows upwards, and the ascending airflow at the side wall can return fine particles carried in coarse powder to the central area in time, so that the improvement of the classification precision is facilitated.
The superfine powder enters a screen mesh grading cavity II-13 through an air inlet and an air inlet II-01 under the action of high-speed airflow, and under the action of a lower vortex, particles with large particle sizes fall along a screen mesh II-0601 in a rotating mode, and particles with smaller particle sizes pass through the screen mesh II-0601 to enter a medium powder grading chamber II-08 and fall along a medium powder discharge pipe II-09 below a conical part II-04.
The coarse powder discharging pipe II-10 is positioned at the lowest position of the elliptic bottom plate II-0602;
meanwhile, strong airflow continuously washes the screen II-0601 to avoid blockage.
The lower part of the cylindrical part is connected with a conical part, and the lower end of the conical part is provided with a medium powder outlet butterfly valve II-12 which is communicated with a quantitative dense packaging device through a medium powder discharge pipe.
Determination of the shape of the screen mesh:
the choice of screen aperture shape depends on the requirements on the screened product particle size and on the screen throughput. The sieve mesh is usually in the shape of round, square or rectangle.
The woven screen surface has a rectangular shape and a square shape, when the superfine powder cell walls of the peanut shells are damaged, the shapes of powder particles are irregular, and under the carrying effect of high-speed airflow, the spatial positions of the superfine powder particles are diversified, so that the shape of the screen holes is set to be circular, and the number of the screen holes is set to be 400 meshes in the embodiment in order to avoid the influence of the factors on the classification precision.
In this embodiment, the screen mesh classifying cavity is fixed at the cylinder part through six evenly distributed screen mesh support frames, and an included angle of 60 degrees is formed between the screen mesh support frames.
The grading impeller blades II-0702 are fixed between the grading impeller upper support II-0703 and the grading impeller lower support II-0704, the grading impeller II-0701 is fixed on the rotating shaft II-0709, the output shaft of the speed reducing motor II-0705 is coaxially fixed with the small synchronous wheel II-0707, the small synchronous wheel II-0707 and the large synchronous wheel II-0708 are driven through the synchronous belt II-0706, and the large synchronous wheel II-0708 is fixed on the outer side of the rotating shaft II-0709 and further drives the grading impeller II-0701 to rotate; the fine powder is carried to an upper vortex along with an upward airflow, the high-speed rotating classifying impeller II-0701 intercepts particles with large particle sizes through collision through the classifying impeller blades II-0702 on the periphery of the classifying impeller II-0701, the particles are classified again under the action of the classifying impeller blades II-0601 of the screen, and the fine powder enters the classifying impeller II-0701 and then enters a fine powder discharge pipe II-11 welded in the center of a top plate II-05 of the cylinder portion along with the airflow.
Referring to the attached drawings 13-14, the classified peanut shell superfine powder falls to a weighing mechanism III-03 through a feeding hopper III-01, the weighing mechanism III-03 comprises a weighing hopper III-0301, and a supporting plate III-0304 is welded on a rack and used for supporting the weighing hopper III-0301.
The weighing hopper III-0301 is connected with four uniformly distributed supporting rods III-0305 provided with gravity sensors III-0303 and used for measuring the weight of the superfine powder.
Two sides of a packaging blanking pipeline III-04 are connected with a clamping machine arm III-05 through bolts III-06 and are used for fixing a packaging bag, a clamping ring III-07 is sleeved at the forehead bottom of the blanking pipeline, a weighing hopper is arranged in a weighing mechanism cabinet body, and the cabinet body is opened and closed through a weighing mechanism cabinet door III-0306.
The vibration compacting mechanism is arranged at the lowest part of the quantitative compacting packaging device, the vibration compacting mechanism III-08 comprises a vibration platform III-0801, a vibration platform support III-0802 and a spring III-0803, and four corners and the central position of the vibration platform III-0801 are connected with the vibration platform support III-0802 through the spring III-0803; the flapping compacting mechanism III-09 comprises a flapping disk III-0901, a push rod III-0902 fixedly connected to the center of the flapping disk III-0901 penetrates through the rear side rack, after the quantifying is finished, the feeding hopper butterfly valve III-02 is closed, the weighing hopper butterfly valve III-0302 is opened, the superfine peanut shell powder falls into the cloth bag, meanwhile, the vibrating compacting mechanism III-08 and the flapping compacting mechanism III-09 jointly act to complete compacting work, and then the superfine peanut shell powder is conveyed out through a conveyor belt III-10 on the conveying rack III-11.
Various functions in the embodiment are controlled and realized through a control cabinet III-13, and a display screen III-12 and a button III-14 are arranged on the control cabinet.
Example 2:
the embodiment 2 of the disclosure provides a spiral scattering cyclone grading peanut shell superfine powder grading packaging method, which utilizes the spiral scattering cyclone grading peanut shell superfine powder grading packaging system in the embodiment 1;
the method comprises a scattering method, a grading method and a packaging method, and specifically comprises the following steps:
the scattering method comprises the following steps:
the superfine peanut shell powder falls from the storage bin to the buffer hopper, the falling speed of the powder is differentiated due to different gradients of four walls of the buffer hopper so as to avoid arching, and after the superfine peanut shell powder reaches the spiral feeding cavity, the shearing action of the double-head spiral blade fully breaks up the powder material and sends the powder material to the discharge hole;
airflow introduced from a compressor is fully dried by an air dryer, external factors of powder material agglomeration are reduced, the airflow flows through a throat of a Venturi tube type three-way, the airflow is rapidly accelerated, meanwhile, the superfine peanut shell powder enters the Venturi tube type three-way under the suction action of negative pressure adsorption generated by the gravity of the superfine peanut shell powder and the throat, the high-speed airflow generates a strong impact action on the superfine peanut shell powder, the agglomeration is broken, and the superfine peanut shell powder is completely scattered.
The grading method comprises the following steps:
the superfine peanut shell powder is fully scattered by a multi-stage scattering device, enters a grading cavity through an air inlet and an air outlet under the action of high-speed airflow, and is divided into an upper vortex and a lower vortex by taking the air inlet and the air outlet as boundaries;
under the action of the lower vortex, the peanut shell superfine powder falls along the sieve in a rotating way, and particles with the particle size smaller than the aperture pass through the sieve, enter the medium powder grading chamber and fall along the medium powder discharge pipe;
when the particle size is larger than the aperture, the particles fall to an inclined bottom plate with a smooth surface along the screen mesh and slide to a coarse powder discharge port, and strong airflow continuously washes the screen mesh to avoid the screen mesh from being blocked;
the fine powder is carried to the upper vortex along with the upward airflow after the radial resultant force applied to the fine powder points to the center, the particles with large particle sizes entrained in the fine powder are intercepted by the grading impeller rotating at high speed through the peripheral blades of the grading impeller, the fine powder is graded again under the action of the screen, and the fine powder enters the fine powder discharging pipe along with the airflow after entering the grading impeller.
The packaging method comprises the following steps:
peanut shell coarse powder enters a feeding hopper through a coarse powder discharging pipe, a butterfly valve of the feeding hopper is opened, the coarse powder falls into a weighing hopper of a weighing mechanism, a gravity sensor converts the weight of the coarse powder into an electric signal and transmits the electric signal to a display screen of a control cabinet, two initial values M and M (M is 0.95M) are set, the feeding is decelerated when the weight reaches M, the feeding is stopped when the weight reaches M, and the butterfly valve of the feeding hopper is closed;
the arm is fixed the sack this moment, and the hopper butterfly valve of weighing is opened, and the peanut shell middlings that will weigh and finish falls to the sack in, and vibration platform and patting disc are ceaselessly closely knit to the middlings vibration in the sack simultaneously. And after the coarse powder falls off, transferring the cloth bag by a conveyor belt, packaging the next bag, and circularly working.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (10)
1. A spiral scattering cyclone grading peanut shell superfine powder grading packaging system is characterized by comprising a scattering device, a grading device and a packaging device which are sequentially connected, wherein the peanut shell superfine powder is scattered by the scattering device and then output to the grading device, and the grading device grades the scattered peanut shell superfine powder and then outputs to the packaging device for packaging;
the grading device comprises a grading cavity, the grading cavity comprises a cylindrical part and a conical part arranged on the lower side of the cylindrical part, an air inlet and an air inlet are symmetrically and tangentially arranged in the middle of the cylindrical part, a cylindrical screen grading cavity coaxial with the cylindrical part is arranged in the cylindrical part, and a grading impeller coaxial with the cylindrical part is arranged in the screen grading cavity;
the superfine powder after being scattered is classified for the first time through the rotary air flow formed by the air inlet feeding hole and the air inlet, the superfine powder with the grain diameter larger than the aperture of the screen mesh is classified for the second time through the cooperation of the screen mesh and the rotary air flow, and the superfine powder is classified for the third time through the cooperation of the classifying impeller and the high-speed rotary air flow.
2. The spiral dispersing cyclone grading peanut shell ultra-fine powder grading packaging system as claimed in claim 1, wherein the dispersing device comprises a double-head spiral dispersing feeding device, the double-head spiral dispersing feeding device comprises a spiral feeding cavity, a double-head spiral screw rod is arranged in the spiral feeding cavity, a double-head spiral blade is fixed on the double-head spiral rod, and the ultra-fine powder is dispersed through the shearing action of the double-head spiral blade and then is sent to a discharge hole of the double-head spiral dispersing feeding device.
3. The spiral dispersing cyclone grading peanut shell superfine powder grading and packaging system as claimed in claim 2, wherein the double-head spiral dispersing feeding device comprises a buffer hopper for receiving the peanut shell superfine powder into the spiral feeding cavity, the buffer hopper comprises four trapezoidal plates with different inclination angles, and the four trapezoidal plates are sequentially connected end to form a trapezoidal channel.
4. The spiral dispersing cyclone grading peanut shell superfine powder grading and packaging system as claimed in claim 2, wherein the dispersing device further comprises an airflow dispersing feeding device, the airflow dispersing feeding device comprises a venturi tube type tee joint, the venturi tube type tee joint comprises a contraction pipe, a throat pipe and a diffusion pipe, the contraction pipe impacts the venturi tube type tee joint after flowing through the throat pipe to receive double-head spiral dispersing superfine powder dispersed by the feeding device, and the dispersed powder is output to an air inlet and an air outlet of the grading device through the diffusion pipe.
5. The spiral dispersing cyclone grading peanut shell superfine powder grading packaging system as claimed in claim 1, wherein the air inlet feed inlet and the air inlet are both provided with 20-degree necking angles, and the cross section is square.
6. The spiral scattering cyclone classification peanut shell superfine powder classification packaging system as claimed in claim 1, wherein an oval bottom plate inclined at a preset angle is arranged at the bottom of the screen classification cavity, and powder with the particle size larger than the aperture of the screen falls to the oval bottom plate along the screen and is output through a coarse powder discharge pipe; the powder with the particle size smaller than the aperture passes through the screen mesh, enters the medium powder grading chamber and is output through the medium powder discharge pipe below the conical part.
7. The spiral dispersing cyclone grading peanut shell superfine powder grading and packaging system as claimed in claim 1, wherein the grading impeller is fixed between an upper bracket and a lower bracket of the grading impeller, grading impeller blades are fixed on the grading impeller, and the grading impeller is fixed on a rotating shaft of a motor;
the fine powder is carried to an upper vortex along with an upward airflow, the motor drives the grading impeller to intercept particles with large particle sizes carried by the fine powder through collision by the blades of the grading impeller, the fine powder is graded again under the action of the screen, and the non-intercepted fine powder enters the grading impeller and then enters a fine powder discharge pipe welded at the center of the top plate of the cylinder part along with the airflow.
8. The spiral dispersing cyclone grading peanut shell superfine powder grading and packaging system as claimed in claim 1, wherein the packaging device comprises a feeding funnel and a weighing funnel, the graded superfine powder output by the grading device enters the weighing funnel through the feeding funnel, the weighing funnel is arranged on a supporting plate, and a plurality of uniformly distributed supporting rods provided with gravity sensors are arranged at the bottom of the weighing funnel and used for measuring the weight of the superfine powder.
9. The spiral scattering cyclone grading peanut shell superfine powder grading and packaging system as claimed in claim 7, wherein a feeding pipeline is connected to the bottom of the weighing funnel, and two sides of the feeding pipeline are connected with a clamping machine arm through bolts for fixing a packaging bag;
the vibration compacting mechanism comprises a vibration platform, a vibration platform bracket and springs, and four corners and the center of the vibration platform are connected with the vibration platform bracket through the springs; patting closely knit mechanism including patting the disc, patting a push rod of disc center fixed connection and pierce through in rear side frame, promote to pat the disc through the push rod and pat the wrapping bag.
10. A method for packaging superfine powder of cyclone-type graded peanut shells in a grading way by using a spiral breaking cyclone-type graded peanut shell superfine powder grading packaging system as claimed in any one of claims 1 to 9;
the superfine peanut shell powder is fully scattered by the scattering device, enters the grading cavity through the air inlet and the air outlet under the action of air flow, and the vortex in the grading cavity of the screen is divided into an upper vortex and a lower vortex by taking the air inlet and the air outlet as boundaries;
under the action of the lower vortex, the peanut shell superfine powder falls along the sieve in a rotating way, and particles with the particle size smaller than the aperture pass through the sieve, enter the medium powder grading chamber and fall along the medium powder discharge pipe;
when the particle size is larger than the aperture, the particles fall to an inclined bottom plate with a smooth surface along the screen mesh and slide to a coarse powder discharge port, and meanwhile, the screen mesh is continuously washed by air flow, so that the screen mesh is prevented from being blocked;
the fine powder is carried to an upper vortex along with an upward airflow when the radial resultant force applied to the fine powder points to the center, the particles with large particle sizes entrained in the fine powder are intercepted by a grading impeller rotating at a high speed through the peripheral blades of the grading impeller through collision, the fine powder is graded again under the action of a screen, and the fine powder enters a fine powder discharging pipe along with the airflow after entering the grading impeller;
and (4) grading the superfine peanut shell powder by a grading device, and then feeding the superfine peanut shell powder into a packaging device through each discharge pipe for packaging.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010286124.6A CN111468411A (en) | 2020-04-13 | 2020-04-13 | Spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method |
| PCT/CN2020/089380 WO2021208163A1 (en) | 2020-04-13 | 2020-05-09 | Spiral scattering and cyclone grading-based peanut shell ultrafine powder grading and packaging system and method |
| ZA2021/06686A ZA202106686B (en) | 2020-04-13 | 2021-09-09 | Spiral dispersing and cyclone grading type grading and packaging system and method for peanut shell superfine powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010286124.6A CN111468411A (en) | 2020-04-13 | 2020-04-13 | Spiral scattering cyclone grading peanut shell superfine powder grading packaging system and method |
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| CN111468411A true CN111468411A (en) | 2020-07-31 |
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| CN (1) | CN111468411A (en) |
| WO (1) | WO2021208163A1 (en) |
| ZA (1) | ZA202106686B (en) |
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| CN113231317A (en) * | 2021-05-27 | 2021-08-10 | 福建茶叶进出口有限责任公司 | Processing and production process for impurity removal and blending of white tea |
| CN114713501A (en) * | 2022-04-15 | 2022-07-08 | 新疆晶硕新材料有限公司 | A particle size grading plant for high temperature hydrolysis nano-material |
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| CN116493258B (en) * | 2023-06-28 | 2023-09-05 | 绵阳九方环保节能科技有限公司 | Horizontal vortex powder separator capable of preventing dust accumulation |
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| JPH11300283A (en) * | 1998-04-22 | 1999-11-02 | Tiger Kawashima Co Ltd | Vertical grain separation metering machine |
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| CN212035877U (en) * | 2020-04-13 | 2020-12-01 | 青岛理工大学 | Peanut processing assembly line |
| CN111317148B (en) * | 2020-04-13 | 2021-06-25 | 青岛理工大学 | Peanut full-flow production line and method |
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2020
- 2020-04-13 CN CN202010286124.6A patent/CN111468411A/en not_active Withdrawn
- 2020-05-09 WO PCT/CN2020/089380 patent/WO2021208163A1/en active Application Filing
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2021
- 2021-09-09 ZA ZA2021/06686A patent/ZA202106686B/en unknown
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Also Published As
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| ZA202106686B (en) | 2021-10-27 |
| WO2021208163A1 (en) | 2021-10-21 |
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