CN115352662B - Powder material packaging system based on intelligent metering - Google Patents

Powder material packaging system based on intelligent metering Download PDF

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CN115352662B
CN115352662B CN202211277530.1A CN202211277530A CN115352662B CN 115352662 B CN115352662 B CN 115352662B CN 202211277530 A CN202211277530 A CN 202211277530A CN 115352662 B CN115352662 B CN 115352662B
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powder
control unit
granular material
central control
stage
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CN115352662A (en
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韩勇
陈剑
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Jiangsu New Technology Development Co ltd
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Jiangsu New Technology Development Co ltd
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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
    • 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
    • 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
    • B65B1/28—Controlling escape of air or dust from containers or receptacles during filling
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Basic Packing Technique (AREA)

Abstract

The invention relates to the technical field of powder and particle metering, in particular to a powder and particle material packaging system based on intelligent metering.

Description

Powder material packaging system based on intelligent metering
Technical Field
The invention relates to the technical field of powder metering, in particular to a powder material packaging system based on intelligent metering.
Background
The powder particle is the form of a solid particle aggregate in a discrete state, compared with a bulk solid, a relatively tiny solid is called the powder particle, the powder particle has the property of fluid, has no specific shape and can flow and fly, and the like, so the determination of the mass and the volume of the powder particle in the processing, treating and charging processes has certain difficulty;
in the prior art, the agglomeration separation of powder and quantitative charging of powder in the charging process are in a mature stage, but the compaction degree of the powder in the packaging process of the prior art has the following problems:
1. the volume of the powder filled in the packing box is influenced by the bulk density of the powder and the particle size of the powder;
2. the conveying speed of the powder body influences the volume of the powder body filled in the packing box;
3. the powder body falls into the packing box, and the corresponding acceleration exists at the height so as to influence the volume of the powder body filled into the packing box;
with the enhancement of social environmental awareness, environmental pollution generated by powder materials in conveying production engineering is more and more widely regarded, and the powder particles have different particle size distributions and different bulk densities, so that the powder particles can fly during the packaging process by a powder particle packaging machine to influence the environment; the packing volume of the same weight is different because the particle-shaped products have different particle size distribution and different bulk density; after the materials are filled, the materials are concentrated at the middle lower part of the packaging box, and the volume of the upper part is too loose, so that the volume of the powder and granular body in the packaging box does not reach a preset value, and the quality of the powder and granular body in the packaging box is influenced.
Disclosure of Invention
Therefore, the invention provides a powder and particle material packaging system based on intelligent metering, which is used for solving the problem of low charging precision caused by the fact that the actual mass and the preset mass of powder and particle materials in a packaging box are different in the charging process because the compaction degree of the powder and particle materials in the packaging box cannot be determined and adjusted in real time in the prior art.
In order to achieve the above object, the present invention provides a powder material packaging system based on intelligent metering, including:
the image acquisition unit is used for acquiring image information of the powder material;
a detecting unit including a quality detecting unit for periodically detecting the quality of the powdered or granular material in the packing box during the charging process and a volume detecting unit for periodically detecting the volume of the powdered or granular material in the charging box during the charging process;
the storage unit is respectively connected with the image acquisition unit and the detection unit and is used for storing the image information acquired by the image acquisition unit and the volume information and the quality information measured by the detection unit;
the central control unit is respectively connected with the image acquisition unit, the detection unit and the storage unit and used for calculating the average particle size of the powder and granular material according to the image information acquired by the image acquisition unit, judging whether the loading process of the powder and granular material is divided into two or three stages according to the loading quality requirement of the packaging box, sequentially determining the loading quality of the powder and granular material in each stage according to the bulk density of the powder and granular material when the loading process of the powder and granular material is judged to be divided into two or three stages, controlling the vibration device and setting the vibration frequency of the vibration device as an initial value to compact the powder and granular material in the packaging box when the central control unit judges that the volume variation of the powder and granular material in the second-stage loading process does not meet the standard, controlling the detection unit to detect the volume of the powder and granular material in the packaging box to determine whether the volume of the powder and granular material in each stage reaches a preset value, and adjusting the initial frequency of the vibration device according to the vibration frequency adjusting parameter of the vibration device.
Further, the central control unit judges whether the loading process of the powder and granular material is divided into stages according to the loading mass demand M of the packaging box, a first preset mass M1 and a second preset mass M2 are arranged in the central control unit, wherein M1 is less than M2,
if M is less than or equal to M1, the central control unit does not need to divide the charging process of the powder material into stages;
if M1 is larger than M and is not larger than M2, the central control unit divides the charging process of the powder material into two stages, and the central control unit specifically divides the mass of each stage according to the bulk density of the powder material;
if M is larger than M2, the central control unit divides the charging process of the powder and granular material into three stages, and the central control unit specifically divides the mass of each stage according to the bulk density of the powder and granular material.
Further, when the central control unit judges that the loading process of the powder and granular material is divided into two stages, the central control unit determines the loading quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material, a first preset standard bulk density rho 1 and a second preset standard bulk density rho 2 are arranged in the central control unit, wherein rho 1 is less than rho 2,
if rho is less than or equal to rho 1, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as M 'and sets the charging mass of a second stage in the charging process as M', wherein M '=2/3 XM, and M' =1/3 XM;
if rho 1 is larger than or equal to rho 2, the central control unit sets the charging mass of the first stage in the charging process of the powder and granular material as M 'and sets the charging mass of the second stage in the charging process as M', wherein M '=1/2 xM, and M' =1/2 xM;
if rho is larger than rho 2, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as M 'and sets the charging mass of a second stage in the charging process as M', wherein M '=1/3 xM, and M' =2/3 xM;
after the central control unit sequentially determines the loading quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the actual volume of each stage so as to determine whether the volume of the powder and granular material reaches a preset value in the loading process.
Further, the central control unit determines the loading quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material when judging that the loading process of the powder and granular material is divided into three stages, a first preset standard bulk density rho 1 and a second preset standard bulk density rho 2 are arranged in the central control unit,
if rho is less than or equal to rho 1, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as Ma, the charging mass of a second stage in the charging process as Mb and the charging mass of a third stage in the charging process as Mc, wherein Ma =2/3 xM, mb =1/6 xM and Mc =1/6 xM;
if rho 1 is larger than rho and is less than or equal to rho 2, the central control unit sets the charging mass of the first stage in the charging process of the powder and granular material as Ma, the charging mass of the second stage in the charging process as Mb and the charging mass of the third stage in the charging process as Mc, wherein Ma =1/3 xM, mb =1/3 xM and Mc =1/3 xM;
if ρ > ρ 2, the central control unit sets the charging mass of the first stage during charging of the powdered or granular material to Ma, the charging mass of the second stage during charging to Mb, and the charging mass of the third stage during charging to Mc, where Ma =1/4 × M, mb =1/4 × M, and Mc =1/2 × M;
after the central control unit sequentially determines the loading quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the actual volume of each stage so as to determine whether the volume of the powder and granular material reaches a preset value in the loading process.
Further, after the central control unit determines the loading quality of the powder and granular material in two stages in sequence according to the bulk density ρ of the powder and granular material, the central control unit controls the detection unit to detect the volume of the powder and granular material in the packaging box to determine whether the volume of the powder and granular material in the loading process of each stage reaches a preset value, the central control unit records the actual volume of the powder and granular material in the packaging box as W1 when the powder and granular material is loaded in the first stage, records the actual volume of the powder and granular material in the packaging box as W2 when the powder and granular material is loaded in the second stage, the central control unit calculates the difference between the actual volume of the powder and granular material in each stage and the standard volume in the corresponding stage in sequence, for the i stage, wherein i =1,2, the central control unit records the difference between the actual volume of the powder and the standard volume in the stage as W2, and sets Δ = Wi-Vi ', wherein Vi' is the standard volume of the powder and granular material corresponding to the loading quality in the i stage, and the first stage is also provided with a preset variation Wab and a first stage volume change Wab in which is smaller than Wb,
if the delta W1 is not more than delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process is within a standard range, and the central control unit controls an intelligently-metered powder and granular material packaging device to charge the packaging box in the second stage; if delta W1 > -delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process does not meet the standard, and the central control unit controls the packaging lifting device to move so that the packaging box is close to the discharge port to charge the packaging box with the powder and granular material in the second stage;
if delta W2 is not more than delta Wb, the central control unit judges that the volume variation of the powder and granular material in the second-stage charging process is within a standard range, and the central control unit judges that the packaging box is packaged; if delta W2 > -delta Wb, the central control unit judges that the volume change quantity of the powder and granular material in the second-stage charging process does not meet the standard, the central control unit controls the vibrating device and sets the vibration frequency of the vibrating device as an initial value so as to compact the powder and granular material in the packaging box, and the central control unit detects whether the volume of the powder and granular material in the packaging box reaches the standard range after vibrating for a preset time.
Further, after the central control unit determines the loading quality of the powder and granular material in three stages in sequence according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the volume of the powder and granular material in the packaging box so as to determine whether the volume of the powder and granular material in the loading process of each stage reaches a preset value, the central control unit records the actual volume of the powder and granular material in the packaging box as W3 when the powder and granular material is loaded in the first stage, records the actual volume of the powder and granular material in the packaging box as W4 when the powder and granular material is loaded in the second stage, and records the actual volume of the powder and granular material in the packaging box as W5 when the powder and granular material is loaded in the third stage, the central control unit calculates the difference between the actual volume and the standard volume of the powdered and granular material in each stage in turn, for the j stage, wherein j =3,4,5, the central control unit marks the difference between the actual volume and the standard volume V 'of the powdered and granular material in the stage as delta Wj, sets delta Wj = Wj-Vj', and is also internally provided with a first-stage preset volume variation standard value delta Wa a second-stage preset volume variation standard value delta Wb and a third-stage preset volume variation standard value delta Wc, wherein delta Wa is less than delta Wb and less than delta Wc,
if delta W1 is not more than delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process is within a standard range, and the central control unit controls the intelligently-metered powder and granular material packaging device to charge the packaging box in the second stage; if delta W1 > -delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process does not meet the standard, and the central control unit controls the packaging lifting device to move so that the packaging box is close to the discharge port to charge the packaging box with the powder and granular material in the second stage;
if the delta W2 is not more than the delta Wb, the central control unit judges that the volume variation of the powder and granular material in the second-stage charging process is within the standard range, and the central control unit controls the intelligently-metered powder and granular material packaging device to charge the packaging box in the third stage; if delta W2 > -delta Wb, the central control unit judges that the volume variation of the powder and granular material in the second-stage charging process does not meet the standard, the central control unit controls the vibrating device and sets the vibration frequency of the vibrating device as an initial value so as to compact the powder and granular material in the packaging box, and the central control unit detects whether the volume of the powder and granular material in the packaging box reaches a standard range after vibrating for a preset time;
if the delta W3 is not more than delta Wc, the central control unit judges that the volume variation of the powder material in the third-stage charging process is within a standard range, and the central control unit judges that the packaging box is packaged; if delta W3 > -delta Wc, the central control unit judges that the volume variation of the powder material in the third-stage charging process does not meet the standard, the central control unit controls the vibration device and sets the vibration frequency of the vibration device as an initial value to compact the powder material in the packaging box, and the central control unit detects whether the volume of the powder material in the packaging box reaches the standard range after vibrating for a preset time.
Further, the central control unit controls the detection unit to detect whether the volume variation of the powder material in the corresponding packaging box reaches the standard range or not when controlling the vibration device to be started to compact the powder material,
if the volume variation of the powder and granular material is within the standard range, the central control unit judges that compaction aiming at the powder and granular material is finished;
if the volume variation of the powder and granular material does not reach the standard range, the central control unit judges and adjusts the initial frequency of the vibration device to compact the powder and granular material; and the central control unit obtains a vibration frequency adjustment parameter E of the vibration device according to the average particle diameter L of the powder and granular material and the bulk density rho of the powder and granular material and adjusts the initial vibration frequency of the vibration device to a corresponding value according to the vibration frequency adjustment parameter E. Further, the central control unit is provided with the following stepsObtaining the vibration frequency adjustment parameter E by a formula, and setting
Figure DEST_PATH_IMAGE001
Wherein, L0 is the preset standard diameter of the powder material, and rho 0 is the preset standard bulk density of the powder material.
Further, if the volume variation of the powder and granular material does not reach the standard range, the central control unit judges and adjusts the initial frequency F of the vibration device to compact the powder and granular material; the central control unit adjusts the initial frequency of the vibration device according to the vibration frequency adjusting parameter E of the vibration device, a first standard adjusting parameter E1, a second standard adjusting parameter E2, a vibration frequency adjusting coefficient alpha 1 of the first vibration device and a vibration frequency adjusting coefficient alpha 2 of the second vibration device are arranged in the central control unit, wherein E1 is less than E2, alpha 1 is less than alpha 2,
if E is less than or equal to E1, the central control unit calculates that the maximum vibration frequency of the vibration device is F' = E multiplied by alpha 2 multiplied by F;
if E1 is more than E and less than or equal to E2, the central control unit calculates that the maximum vibration frequency of the vibration device is F' = E
Figure 608654DEST_PATH_IMAGE002
F；
If E > E2, the central control unit calculates the maximum vibration frequency of the vibration device to be F' = E multiplied by alpha 1 multiplied by F.
Further, the central control unit calculates the descending speed of the lifting device according to the bottom area of the packaging box and the mass of the powder and granular material falling into the packaging box per second when controlling the packaging lifting device to move, the central control unit reserves a preset height for the packaging lifting device before controlling the packaging lifting device to move so that the powder and granular material completely falls into the packaging box, and the descending speed V of the lifting device Lifting of wine Calculated according to the following formula, set V Lifting of water =
Figure 626289DEST_PATH_IMAGE003
Wherein S is the bottom area of the packaging box, and m is the mass of the powder material falling into the packaging box within one second.
Compared with the prior art, the invention has the advantages that the central control unit respectively determines the number of the charging stages and the charging quality of the powder and granular material in each stage according to the actual quality of the powder and granular material to be charged, judges whether the compaction degree of the powder and granular material in the packaging box meets the standard or not according to the volume of the powder and granular material after charging in the charging process of each stage, counts the particle diameter and the bulk density of the powder and granular material when the compaction degree of the powder and granular material in the packaging box does not meet the standard, calculates the vibration frequency adjusting parameter of the vibration device according to the particle diameter and the bulk density of the powder and granular material, adjusts the vibration frequency of the vibration device and the height of the packaging lifting device to corresponding values, can avoid the condition that the quality of the powder and granular material does not reach the preset value due to the loosening of the powder and granular material in the packaging process of the powder and granular material, can also avoid the condition that the powder and granular material is not easy to collect due to flying, and can enable the quality and the volume of the powder and granular material to reach the preset value under the condition that the powder and granular material is not damaged, thereby further improving the packaging efficiency of the powder and granular material.
Furthermore, the central control unit divides the volume in the charging process into stages according to the volume of the powder material stored in the powder material packaging box, can detect the volume of the powder material in the powder material packaging box in a targeted manner through the stages, can accurately monitor the charging process, and improves the compaction degree of the powder material in the charging process.
Furthermore, the central control unit specifically divides the mass of each stage of the powder and particle material according to the bulk density of the powder and particle material, and selects a corresponding processing mode according to the range of the difference value between the actual volume and the preset volume of each stage, so that the powder and particle material which does not reach the preset volume stage can be purposefully compacted, the metering precision of the powder and particle material in the charging process can be improved, and the metering error is reduced.
Furthermore, when the volume of each stage in the powder and granular material charging process does not reach the preset volume, the central control unit adjusts the vibration frequency of the vibration device in the charging process so as to enable the volume of the powder and granular material in the charging process to reach the preset value, so that the metering accuracy of the powder and granular material can be guaranteed in each stage, and the metering error is reduced.
Furthermore, the central control unit compares the average particle size of the powder material and the bulk density of the powder material with corresponding preset standard values respectively to calculate vibration frequency adjustment parameters of the vibration device, and calculates the maximum vibration frequency of the vibration device according to the vibration frequency adjustment parameters of the vibration device, so that the situation that the powder material flies upwards due to overlarge vibration to cause the powder material not to be collected and to cause the powder material to be lost can be avoided, and certain pollution is caused to the charging environment to further improve the conveying efficiency.
Furthermore, the central control unit calculates the descending speed of the lifting device of the powder and granular material according to the size of the powder and granular material packaging box and the mass of the powder and granular material falling into the packaging box per second, and can reduce the acceleration of the powder and granular material so as to reduce the impact force between the powder and granular material falling into the packaging box and the powder and granular material in the packaging box, thereby avoiding the occurrence of the condition that the powder and granular material is loose due to flying of the powder and granular material and improving the environment to a certain extent.
Furthermore, the intelligent metering is carried out on each stage in the powder material charging process by controlling the corresponding device of the intelligent metering-based powder material packaging system through the intelligent metering-based powder material packaging system, so that the error of manual metering can be reduced, the charging quality and volume precision can be improved, and the charging efficiency can be further improved.
Drawings
Fig. 1 is a schematic structural diagram of a corresponding device of a powder and granular material packaging system based on intelligent metering according to the invention;
fig. 2 is a structural block diagram of the powder and granular material packaging system based on intelligent metering according to the invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Please refer to fig. 1 and fig. 2, which are schematic structural diagrams of a device corresponding to the powder and granular material packaging system based on intelligent metering according to the present invention and a block diagram of the powder and granular material packaging system based on intelligent metering according to the present invention;
the invention provides a powder material packaging system based on intelligent metering, which comprises:
the image acquisition unit is used for acquiring image information of the powder material;
a detecting unit including a mass detecting unit for periodically detecting the mass of the powdered or granular material in the packing box during the charging process and a volume detecting unit for periodically detecting the volume of the powdered or granular material in the packing box during the charging process;
the storage unit is respectively connected with the image acquisition unit and the detection unit and is used for storing the image information acquired by the image acquisition unit and the volume information and the quality information measured by the detection unit;
and the central control unit is respectively connected with the image acquisition unit, the detection unit and the storage unit and is used for calculating the average particle size of the powder and granular material according to the image information acquired by the image acquisition unit, respectively determining the number of charging stages and the charging mass of the powder and granular material in each stage according to the actual mass of the powder and granular material to be charged, respectively judging whether the compaction degree of the powder and granular material in the packaging box meets the standard or not according to the volume of the powder and granular material which is charged in the charging process of each stage, respectively calculating a vibration frequency adjusting parameter E of the vibration device according to the particle size and the bulk density of the powder and granular material when the compaction degree of the powder and granular material in the packaging box does not meet the standard, and adjusting the vibration frequency of the vibration device and the height of the packaging lifting device to corresponding values.
The invention respectively determines the number of stages of charging and the charging quality of the powder and granular material in each stage through the central control unit according to the actual quality of the powder and granular material to be charged, judges whether the compaction degree of the powder and granular material in the packaging box meets the standard or not according to the volume of the powder and granular material after charging in the charging process of each stage, counts the particle size and the bulk density of the powder and granular material when the compaction degree of the powder and granular material in the packaging box does not meet the standard, calculates the vibration frequency adjustment parameter of the vibration device according to the particle size and the bulk density of the powder and granular material, and adjusts the vibration frequency of the vibration device and the height of the packaging lifting device to corresponding values, so that the condition that the powder and granular material quality does not reach the preset value due to the loosening of the powder and granular material can be avoided in the packaging process of the powder and granular material, meanwhile, the condition that the powder and granular material is not easy to be collected due to the flying of the powder and granular material can be reached the preset value under the condition that the powder and granular material is not damaged, and the packaging efficiency of the powder and granular material is further improved.
Specifically, the central control unit judges whether the loading process of the powder and granular material is divided into stages according to the loading mass demand M of the packaging box, a first preset mass M1 and a second preset mass M2 are arranged in the central control unit, wherein M1 is less than M2,
if M is less than or equal to M1, the central control unit does not need to divide the charging process of the powder material into stages;
if M1 is larger than or equal to M2, the central control unit divides the charging process of the powder material into two stages, and the central control unit specifically divides the mass of each stage according to the bulk density of the powder material;
if M is larger than M2, the central control unit divides the charging process of the powder and granular material into three stages, and the central control unit specifically divides the mass of each stage according to the bulk density of the powder and granular material.
The central control unit divides the volume in the charging process into stages according to the volume of the powder material stored in the powder material packaging box, can detect the volume of the powder material in the powder material packaging box in a targeted manner through the stages, can accurately monitor the charging process, and improves the compaction degree of the powder material in the charging process.
Specifically, when the charging process of the powder and granular material is divided into two stages, the central control unit determines the charging quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material in sequence, a first preset standard bulk density rho 1 and a second preset standard bulk density rho 2 are arranged in the central control unit, wherein rho 1 is less than rho 2,
if rho is less than or equal to rho 1, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as M 'and sets the charging mass of a second stage in the charging process as M', wherein M '=2/3 XM, and M' =1/3 XM;
if ρ 1 < ρ ≦ ρ 2, the central control unit sets a charging mass of the first stage in the charging process of the particulate material to M' and a charging mass of the second stage in the charging process to M =1/2 × M, M "=1/2 × M;
if ρ > ρ 2, the central control unit sets a charging mass at a first stage in a charging process of the particulate material to M 'and sets a charging mass at a second stage in the charging process to M ″, where M' =1/3 × M, and M "=2/3 × M;
after the central control unit sequentially determines the loading quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the actual volume of each stage so as to determine whether the volume of the powder and granular material reaches a preset value in the loading process.
Specifically, the central control unit determines the loading quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material when judging that the loading process of the powder and granular material is divided into three stages, a first preset standard bulk density rho 1 and a second preset standard bulk density rho 2 are arranged in the central control unit,
if rho is less than or equal to rho 1, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as Ma, the charging mass of a second stage in the charging process as Mb and the charging mass of a third stage in the charging process as Mc, wherein Ma =2/3 xM, mb =1/6 xM and Mc =1/6 xM;
if rho 1 is larger than rho and is less than or equal to rho 2, the central control unit sets the charging mass of the first stage in the charging process of the powder and granular material as Ma, the charging mass of the second stage in the charging process as Mb and the charging mass of the third stage in the charging process as Mc, wherein Ma =1/3 xM, mb =1/3 xM and Mc =1/3 xM;
if ρ > ρ 2, the central control unit sets the charging mass of the first stage during charging of the powdered or granular material to Ma, the charging mass of the second stage during charging to Mb, and the charging mass of the third stage during charging to Mc, where Ma =1/4 × M, mb =1/4 × M, and Mc =1/2 × M;
after the central control unit sequentially determines the loading quality of the powder and granular material in each stage according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the actual volume of each stage so as to determine whether the volume of the powder and granular material reaches a preset value in the loading process.
The central control unit specifically divides the mass of each stage of the powder and particle material according to the bulk density of the powder and particle material, and selects a corresponding processing mode according to the range of the difference value between the actual volume and the preset volume of each stage, so that the powder and particle material which does not reach the preset volume stage can be purposefully compacted, the metering precision of the powder and particle material in the charging process can be improved, and the metering error is reduced.
Specifically, after the central control unit determines the loading quality of the powder and granular material in two stages in sequence according to the bulk density ρ of the powder and granular material, the central control unit controls the detection unit to detect the volume of the powder and granular material in the packaging box to determine whether the volume of the powder and granular material in the loading process of each stage reaches a preset value, the central control unit records the actual volume of the powder and granular material in the packaging box as W1 when the powder and granular material is loaded in the first stage, records the actual volume of the powder and granular material in the packaging box as W2 when the powder and granular material is loaded in the second stage, the central control unit calculates the difference between the actual volume of the powder and granular material in each stage and the standard volume in the corresponding stage in sequence, for the i stage, i =1,2, the central control unit records the difference between the actual volume of the powder and the standard volume in the stage as Δ, sets Δ = Wi ', wherein Vi' is the standard Δ volume of the powder and granular material corresponding to the loading quality in the loading process of the i stage, and the first-stage preset volume change amount of the standard Δ volume of the first- Δ volume change and Wi & ltb & gtWab, wherein Wb & ltw & ltb & gtis set in the first stage,
if the delta W1 is not more than delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process is within a standard range, and the central control unit controls an intelligently-metered powder and granular material packaging device to charge the packaging box in the second stage; if delta W1 > -delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process does not meet the standard, and the central control unit controls the packaging lifting device to move so that the packaging box is close to the discharge port to charge the packaging box with the powder and granular material in the second stage;
if the delta W2 is not more than the delta Wb, the central control unit judges that the volume variation of the powder material in the second-stage charging process is within the standard range, and the central control unit judges that the packaging box is packaged; if delta W2 > -delta Wb, the central control unit judges that the volume change quantity of the powder and granular material in the second-stage charging process does not meet the standard, the central control unit controls the vibrating device and sets the vibration frequency of the vibrating device as an initial value so as to compact the powder and granular material in the packaging box, and the central control unit detects whether the volume of the powder and granular material in the packaging box reaches the standard range after vibrating for a preset time.
When the volume of each stage in the powder and granular material charging process does not reach the preset volume, the central control unit adjusts the vibration frequency of the vibration device in the charging process so as to enable the volume of the powder and granular material in the charging process to reach the preset value, so that the metering accuracy of the powder and granular material can be guaranteed in each stage, and the metering error is reduced.
Specifically, after the central control unit determines the loading quality of the powder material in three stages in sequence according to the bulk density rho of the powder material, the central control unit controls the detection unit to detect the volume of the powder material in the packaging box so as to determine whether the volume of the powder material in each stage in the loading process reaches a preset value, the central control unit records the actual volume of the powder material in the packaging box as W3 when the powder material completes the loading in the first stage, records the actual volume of the powder material in the packaging box as W4 when the powder material completes the loading in the second stage, and records the actual volume of the powder material in the packaging box as W5 when the powder material completes the loading in the third stage, the central control unit calculates the difference between the actual volume of the powder material and the standard volume in each stage in sequence, for the j =3,4,5, the central control unit records the difference between the actual volume of the powder material and the standard volume as Wj, sets a standard value Wab and a preset volume change in the first stage as Wb, sets a delta Vj, and sets a standard value Wac and a preset volume change in the third stage in the central control unit, wherein the change is smaller than Wac and the volume of the preset volume of the third stage,
if the delta W1 is not more than delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process is within a standard range, and the central control unit controls an intelligently-metered powder and granular material packaging device to charge the packaging box in the second stage; if delta W1 > -delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process does not meet the standard, and the central control unit controls the packaging lifting device to move so that the packaging box is close to the discharge port to charge the packaging box with the powder and granular material in the second stage;
if the delta W2 is not more than the delta Wb, the central control unit judges that the volume variation of the powder and granular material in the second-stage charging process is within the standard range, and the central control unit controls the intelligently-metered powder and granular material packaging device to charge the packaging box in the third stage; if delta W2 > -delta Wb, the central control unit judges that the volume variation of the powder and granular material in the second-stage charging process does not meet the standard, the central control unit controls the vibrating device and sets the vibration frequency of the vibrating device as an initial value so as to compact the powder and granular material in the packaging box, and the central control unit detects whether the volume of the powder and granular material in the packaging box reaches a standard range after vibrating for a preset time;
if the delta W3 is not more than delta Wc, the central control unit judges that the volume variation of the powder material in the third-stage charging process is within a standard range, and the central control unit judges that the packaging box is packaged; if delta W3 is larger than delta Wc, the central control unit judges that the volume variation of the powder material in the third-stage charging process does not meet the standard, the central control unit controls the vibration device and sets the vibration frequency of the vibration device as an initial value to compact the powder material in the packaging box, and the central control unit detects whether the volume of the powder material in the packaging box reaches the standard range or not after the powder material is vibrated for a preset time.
Specifically, the central control unit controls the detection unit to detect whether the volume variation of the powder material in the corresponding packaging box reaches the standard range or not when controlling the vibration device to start to compact the powder material,
if the volume variation of the powder material is within the standard range, the central control unit judges that compaction aiming at the powder material is completed;
if the volume variation of the powder and granular material does not reach the standard range, the central control unit judges and adjusts the initial frequency of the vibration device to compact the powder and granular material; and the central control unit obtains a vibration frequency adjustment parameter E of the vibration device according to the average particle diameter L of the powder and granular material and the bulk density rho of the powder and granular material and adjusts the initial vibration frequency of the vibration device to a corresponding value according to the vibration frequency adjustment parameter E.
Specifically, the central control unit obtains the vibration frequency adjustment parameter E by the following equation, and sets it
E=
Figure 714331DEST_PATH_IMAGE004
Wherein, L0 is the preset standard diameter of the powder material, and rho 0 is the preset standard bulk density of the powder material.
The central control unit compares the average particle size of the powder and particle material and the bulk density of the powder and particle material with corresponding preset standard values respectively to calculate the vibration frequency adjustment parameter of the vibration device, and calculates the maximum vibration frequency of the vibration device according to the vibration frequency adjustment parameter of the vibration device, so that the situation that the powder and particle material flies upwards due to overlarge vibration to cause the powder and particle material to be incapable of being collected to cause the powder and particle material loss can be avoided, and certain pollution is caused to the charging environment to further improve the conveying efficiency.
Specifically, if the volume variation of the powdered and granular material does not reach the standard range, the central control unit judges and adjusts the initial frequency F of the vibration device to compact the powdered and granular material; the central control unit adjusts the initial frequency of the vibration device according to the vibration frequency adjusting parameter E of the vibration device, a first standard adjusting parameter E1, a second standard adjusting parameter E2, a vibration frequency adjusting coefficient alpha 1 of the first vibration device and a vibration frequency adjusting coefficient alpha 2 of the second vibration device are arranged in the central control unit, wherein E1 is less than E2, alpha 1 is less than alpha 2,
if E is less than or equal to E1, the central control unit calculates that the maximum vibration frequency of the vibration device is F' = E multiplied by alpha 2 multiplied by F;
if E1 is larger than E and is not larger than E2, the central control unit calculates the maximum vibration frequency of the vibration device to be F' = E multiplied by F;
if E > E2, the central control unit calculates the maximum vibration frequency of the vibration device to be F' = E multiplied by alpha 1 multiplied by F.
Specifically, theIn other words, the central control unit calculates the descending speed of the lifting device according to the bottom area of the packaging box and the mass of the powder and granular material falling into the packaging box per second when controlling the packaging lifting device to move, the central control unit reserves a preset height for the packaging lifting device before controlling the packaging lifting device to move so that the powder and granular material completely falls into the packaging box, and the descending speed V of the lifting device Lifting of water Calculated according to the following formula, set V Lifting of wine =
Figure 309260DEST_PATH_IMAGE003
Wherein S is the bottom area of the packaging box, and m is the mass of the powder material falling into the packaging box within one second.
The central control unit calculates the descending speed of the lifting device of the powder and granular material according to the size of the powder and granular material packaging box and the mass of the powder and granular material falling into the packaging box per second, and can reduce the acceleration of the powder and granular material so as to reduce the impact force between the powder and granular material falling into the packaging box and the powder and granular material in the packaging box in the process of falling, thereby avoiding the occurrence of the condition that the powder and granular material is loose due to flying of the powder and granular material and improving the environment to a certain extent.
According to the invention, the corresponding device of the powder and granular material packaging system based on intelligent metering is controlled by the powder and granular material packaging system based on intelligent metering to perform intelligent metering on each stage in the powder and granular material charging process, so that the error of manual metering can be reduced, the charging quality and volume precision can be improved, and the charging efficiency can be further improved.
When powder and granular materials are conveyed into a mixing box 3 through a charging box 1, various powder and granular materials are sufficiently stirred in the mixing box 3 through a stirring device 2, a central control unit (not shown in the figure) controls an electric valve 4 to guide the powder and granular mixture into a sieve separating table 5, the sieve separating table 5 sieves and separates powder and granular material cakes, the powder and granular materials are conveyed into a packaging box 7 after being sieved, a bearing table 8 of the packaging box 7 can move up and down through a rail 6 in the charging process of the powder and granular materials, a mass weighing scale is arranged on the bearing table 8 of the packaging box 7 to weigh the powder and granular materials in the packaging box 7, a detection unit (not shown in the figure) is arranged at a corresponding position below the sieve separating table 5 to detect the volume of the powder and granular materials and the particle size of the powder and granular materials, and when the detection unit detects that the volume of the powder and granular coating does not reach a preset standard, a vibration device is arranged on the bearing table 8 to vibrate and compact the powder and granular materials in the packaging box.
Example 1
Filling M =15kg of corresponding powder material into the packaging box, and dividing a powder material filling process into two stages by a central control unit according to the mass of the powder material, wherein M1=10kg, and M2=29kg;
the bulk density of the powder and granular material is 0.62kg/L, wherein rho 1=0.4kg/L and rho 2=0.5kg/L, the central control unit sets the charging mass at the first stage as M' =5kg and the charging mass at the second stage as M "=10kg,
the method comprises the steps that a central control unit calculates delta W1=1.7L in a first stage, wherein delta Wa =2L and delta Wb =3.5L, the central control unit judges that the variation of the first stage is within a standard range, the packaging box is continuously charged, the central control unit counts a detection unit to detect delta W =4.11L in a second stage, the central control unit judges that the compaction degree of powder materials in the corresponding stage in the packaging box is insufficient, a vibration device of a powder material packaging device is started to vibrate and compact the powder materials for an initial value, and the central control unit judges that the volume of the powder materials does not reach the standard range after vibrating for a preset period of 2 min; the central control unit judges and adjusts the vibration frequency of the vibration device;
and the central control unit calculates a vibration frequency adjusting parameter E according to the relevant numerical value according to the average particle diameter L =0.6mm, wherein L0=0.51 and rho 0=0.55 of the powder and granular material, wherein E1=2, E2=5, alpha 1=0.6 and alpha 2=0.8, and calculates the vibration frequency and adjusts the vibration frequency of the vibration device according to the vibration frequency adjusting parameter E and the corresponding adjusting coefficient.
Example 2
Aiming at the situation that the powder and granular material corresponding to M =30kg is loaded in the packaging box in the embodiment 1, the process of loading the powder and granular material by the central control unit is divided into two stages according to the mass of the powder and granular material, wherein the bulk density of the powder and granular material is 0.62kg/L, and rho 1=0.4kg/L and rho 2=0.5kg/L, the central control unit sets the loading mass in the first stage as M' =10kg and the loading mass in the second stage as M "=20kg,
the method comprises the steps that a central control unit calculates delta W1=3.8L, wherein delta Wa =2L and delta Wb =3.5L, the central control unit judges that the variation of a first stage is not in a standard range, a vibration device of a powder and granular material packaging device is started to vibrate and compact the powder and granular material for an initial value, and the central control unit judges that the volume of the powder and granular material reaches the standard range after vibrating for a preset period of 2 min; the central control unit counts that the detection unit detects that the delta W =4.4L of the second stage, the central control unit judges that the compaction degree of the powder material at the corresponding stage in the packaging box is insufficient, a vibration device of the powder material packaging device is started to perform vibration compaction on the powder material for an initial value, and after a preset vibration period is 3min, the central control unit judges that the volume of the powder material reaches a standard range;
in example 2, the powdered or granular material is not divided into stages according to the technical scheme of the present invention, so that the vibrating effect is poor after the material is accumulated more, and the packaging efficiency of the powdered or granular material is low.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A powder material packaging system based on intelligent metering is characterized by comprising:
the image acquisition unit is used for acquiring image information of the powder material;
a detecting unit including a mass detecting unit for periodically detecting the mass of the powdered or granular material in the packing box during the charging process and a volume detecting unit for periodically detecting the volume of the powdered or granular material in the packing box during the charging process;
the storage unit is respectively connected with the image acquisition unit and the detection unit and is used for storing the image information acquired by the image acquisition unit and the volume information and the quality information measured by the detection unit;
the middle control unit is respectively connected with the image acquisition unit, the detection unit and the storage unit and is used for judging whether to carry out stage division on the charging process of the powder and granular material according to the charging quality requirement of the packaging box and sequentially determining the charging quality of the powder and granular material in each stage according to the bulk density of the powder and granular material when the charging process of the powder and granular material is judged to be divided into two or three stages, the middle control unit is used for controlling the detection unit to detect the volume of the powder and granular material in the packaging box to determine whether the volume of the powder and granular material in the charging process of each stage reaches a preset value or not according to the bulk density of the powder and granular material in each stage, the middle control unit is used for adjusting the height of the packaging lifting device to a corresponding value when the volume variation standard of the powder and granular material in the charging process of the first stage is judged to be not met, the middle control unit is used for controlling the vibration device and setting the vibration frequency of the vibration device as an initial value to pack material in accordance with the volume variation standard of the powder and granular material in the packaging box, the middle control unit is used for adjusting the vibration frequency of the powder and granular material in the third stage and the vibration device to obtain the average particle size parameter of the vibration device according to the vibration frequency of the vibration device, and the vibration device are used for obtaining the average particle size of the vibration device.
2. The powder and granular material packaging system based on intelligent metering of claim 1, wherein the central control unit judges whether to perform stage division on the charging process of the powder and granular material according to the charging mass requirement M of the packaging box, a first preset mass M1 and a second preset mass M2 are arranged in the central control unit, wherein M1 is less than M2,
if M is less than or equal to M1, the central control unit does not need to divide the charging process of the powder material into stages;
if M1 is larger than M and is not larger than M2, the central control unit divides the charging process of the powder material into two stages, and the central control unit specifically divides the mass of each stage according to the bulk density of the powder material;
if M is larger than M2, the central control unit divides the charging process of the powder and granular material into three stages, and the central control unit specifically divides the mass of each stage according to the bulk density of the powder and granular material.
3. The intelligent metering-based powder material packaging system according to claim 2, wherein the central control unit determines the loading quality of the powder material in each stage according to the bulk density ρ of the powder material when judging that the loading process of the powder material is divided into two stages, a first preset standard bulk density ρ 1 and a second preset standard bulk density ρ 2 are arranged in the central control unit, wherein ρ 1 is less than ρ 2,
if rho is less than or equal to rho 1, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as M 'and sets the charging mass of a second stage in the charging process as M', wherein M '=2/3 XM, and M' =1/3 XM;
if ρ 1 < ρ ≦ ρ 2, the central control unit sets a charging mass of the first stage in the charging process of the particulate material to M' and a charging mass of the second stage in the charging process to M =1/2 × M, M "=1/2 × M;
if rho is larger than rho 2, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as M 'and sets the charging mass of a second stage in the charging process as M', wherein M '=1/3 xM, and M' =2/3 xM;
after the central control unit sequentially determines the loading mass of the powder and granular material in each stage according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the actual volume of each stage so as to determine whether the volume of the powder and granular material reaches a preset value in the loading process.
4. The intelligent metering-based powder material packaging system according to claim 2, wherein the central control unit determines the loading quality of the powder material in each stage according to the bulk density ρ of the powder material when determining that the loading process of the powder material is divided into three stages, a first preset standard bulk density ρ 1 and a second preset standard bulk density ρ 2 are arranged in the central control unit,
if rho is less than or equal to rho 1, the central control unit sets the charging mass of a first stage in the charging process of the powder and granular material as Ma, the charging mass of a second stage in the charging process as Mb and the charging mass of a third stage in the charging process as Mc, wherein Ma =2/3 xM, mb =1/6 xM and Mc =1/6 xM;
if rho 1 is larger than rho and is less than or equal to rho 2, the central control unit sets the charging mass of the first stage in the charging process of the powder and granular material as Ma, the charging mass of the second stage in the charging process as Mb and the charging mass of the third stage in the charging process as Mc, wherein Ma =1/3 xM, mb =1/3 xM and Mc =1/3 xM;
if ρ > ρ 2, the central control unit sets the charging mass of the first stage during charging of the powdered or granular material to Ma, the charging mass of the second stage during charging to Mb, and the charging mass of the third stage during charging to Mc, where Ma =1/4 × M, mb =1/4 × M, and Mc =1/2 × M;
after the central control unit sequentially determines the loading mass of the powder and granular material in each stage according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the actual volume of each stage so as to determine whether the volume of the powder and granular material reaches a preset value in the loading process.
5. The powder and granular material packaging system based on intelligent metering of claim 3, wherein after the central control unit determines the loading quality of the powder and granular material in two stages in sequence according to the bulk density rho of the powder and granular material, the central control unit controls the detection unit to detect the volume of the powder and granular material in the packaging box so as to determine whether the volume of the powder and granular material in the loading process of each stage reaches a preset value, the central control unit records the actual volume of the powder and granular material in the packaging box as W1 when the powder and granular material is completely loaded in the first stage, records the actual volume of the powder and granular material in the packaging box as W2 when the powder and granular material is completely loaded in the second stage, the central control unit calculates the difference between the actual volume of the powder and granular material in each stage and the standard volume in the corresponding stage in sequence, for the ith stage, wherein i =1,2, the central control unit records the difference between the actual volume of the powder and the standard volume in the stage as Wi, and sets delta = Wi-Vi', wherein delta is the standard volume of the standard value corresponding to the loading quality in the loading process of the loading stage, and the volume of the first stage is set as Wb, and the preset volume change amount Wb in the central control unit,
if the delta W1 is not more than delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process is within a standard range, and the central control unit controls an intelligently-metered powder and granular material packaging device to charge the packaging box in the second stage; if delta W1 > -delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process does not meet the standard, and the central control unit controls the packaging lifting device to move so that the packaging box is close to the discharge port to charge the packaging box with the powder and granular material in the second stage;
if the delta W2 is not more than the delta Wb, the central control unit judges that the volume variation of the powder material in the second-stage charging process is within the standard range, and the central control unit judges that the packaging box is packaged; if delta W2 > -delta Wb, the central control unit judges that the volume change quantity of the powder and granular material in the second-stage charging process does not meet the standard, the central control unit controls the vibrating device and sets the vibration frequency of the vibrating device as an initial value so as to compact the powder and granular material in the packaging box, and the central control unit detects whether the volume of the powder and granular material in the packaging box reaches the standard range after vibrating for a preset time.
6. The intelligent metering-based powder material packaging system according to claim 4, wherein the central control unit determines the charging quality of the powder material in three stages in sequence according to the bulk density ρ of the powder material, then controls the detection unit to detect the volume of the powder material in the packaging box so as to determine whether the volume of the powder material in the charging process of each stage reaches a preset value, records the actual volume of the powder material in the packaging box as W3 when the powder material completes the charging in the first stage, records the actual volume of the powder material in the packaging box as W4 when the powder material completes the charging in the second stage, and records the actual volume of the powder material in the packaging box as W5 when the powder material completes the charging in the third stage, the central control unit calculates the difference between the actual volume and the standard volume of the powdered and granular material in each stage in turn, for the j stage, wherein j =3,4,5, the central control unit marks the difference between the actual volume and the standard volume V 'of the powdered and granular material in the stage as delta Wj, sets delta Wj = Wj-Vj', and is also internally provided with a first-stage preset volume variation standard value delta Wa a second-stage preset volume variation standard value delta Wb and a third-stage preset volume variation standard value delta Wc, wherein delta Wa is less than delta Wb and less than delta Wc,
if delta W1 is not more than delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process is within a standard range, and the central control unit controls the intelligently-metered powder and granular material packaging device to charge the packaging box in the second stage; if delta W1 > -delta Wa, the central control unit judges that the volume variation of the powder and granular material in the first-stage charging process does not meet the standard, and the central control unit controls the packaging lifting device to move so that the packaging box is close to the discharge port to charge the packaging box with the powder and granular material in the second stage;
if the delta W2 is not more than the delta Wb, the central control unit judges that the volume variation of the powder and granular material in the second-stage charging process is within the standard range, and the central control unit controls the intelligently-metered powder and granular material packaging device to charge the packaging box in the third stage; if delta W2 > -delta Wb, the central control unit judges that the volume variation of the powder and granular material in the second-stage charging process does not meet the standard, the central control unit controls the vibrating device and sets the vibration frequency of the vibrating device as an initial value so as to compact the powder and granular material in the packaging box, and the central control unit detects whether the volume of the powder and granular material in the packaging box reaches a standard range after vibrating for a preset time;
if the delta W3 is not more than delta Wc, the central control unit judges that the volume variation of the powder material in the third-stage charging process is within a standard range, and the central control unit judges that the packaging box is packaged; if delta W3 is larger than delta Wc, the central control unit judges that the volume variation of the powder material in the third-stage charging process does not meet the standard, the central control unit controls the vibration device and sets the vibration frequency of the vibration device as an initial value to compact the powder material in the packaging box, and the central control unit detects whether the volume of the powder material in the packaging box reaches the standard range or not after the powder material is vibrated for a preset time.
7. The intelligent metering-based powdered or granular material packaging system according to any one of claims 5 or 6, wherein the central control unit controls the detection unit to detect whether the volume change amount of the powdered or granular material in the corresponding packaging box reaches a standard range or not when the vibration device is controlled to be started to compact the powdered or granular material,
if the volume variation of the powder and granular material is within the standard range, the central control unit judges that compaction aiming at the powder and granular material is finished;
if the volume variation of the powder and granular material does not reach the standard range, the central control unit judges and adjusts the initial frequency of the vibration device to compact the powder and granular material; and the central control unit obtains a vibration frequency adjustment parameter E of the vibration device according to the average particle diameter L of the powder and granular material and the bulk density rho of the powder and granular material and adjusts the initial vibration frequency of the vibration device to a corresponding value according to the vibration frequency adjustment parameter E.
8. According to claimThe powder and granular material packaging system based on intelligent metering of claim 7, wherein the central control unit obtains the vibration frequency adjustment parameter E by the following formula, and sets the vibration frequency adjustment parameter E
Figure 629130DEST_PATH_IMAGE001
Wherein, L0 is the preset standard diameter of the powder material, and rho 0 is the preset standard bulk density of the powder material.
9. The intelligent metering-based powdered or granular material packaging system according to claim 8, wherein if the volume change of the powdered or granular material does not reach the standard range, the central control unit determines to adjust the initial frequency F of the vibration device to compact the powdered or granular material; the central control unit adjusts the initial frequency of the vibration device according to the vibration frequency adjusting parameter E of the vibration device, a first standard adjusting parameter E1, a second standard adjusting parameter E2, a vibration frequency adjusting coefficient alpha 1 of the first vibration device and a vibration frequency adjusting coefficient alpha 2 of the second vibration device are arranged in the central control unit, wherein E1 is less than E2, alpha 1 is less than alpha 2,
if E is less than or equal to E1, the central control unit calculates the maximum vibration frequency of the vibration device to be F' = E multiplied by alpha 2 multiplied by F;
if E1 is more than E and less than or equal to E2, the central control unit calculates the maximum vibration frequency of the vibration device to be F' = E
Figure 296872DEST_PATH_IMAGE002
F；
If E is larger than E2, the central control unit calculates that the maximum vibration frequency of the vibration device is F' = E
Figure 434592DEST_PATH_IMAGE002
α1×F。
10. The system for packaging powdered or granular material based on intelligent metering as claimed in any one of claims 5 or 6, wherein the central control unit controls the package lifting device to move according to the bottom of the packaging boxThe descending speed of the lifting device is calculated according to the area and the mass per second of the powder and granular material falling into the packaging box, the central control unit reserves a preset height for the packaging lifting device before controlling the packaging lifting device to move so that the powder and granular material completely falls into the packaging box, and the descending speed of the lifting device
Figure 162377DEST_PATH_IMAGE003
Calculated according to the following formula, set
Figure 385547DEST_PATH_IMAGE004
Wherein S is the bottom area of the packaging box, and m is the mass of the powder material falling into the packaging box within one second.
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