CN109436400B - High-precision weighing and packaging process dust-free active carbon packaging machine and packaging method thereof - Google Patents

High-precision weighing and packaging process dust-free active carbon packaging machine and packaging method thereof Download PDF

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Publication number
CN109436400B
CN109436400B CN201811352365.5A CN201811352365A CN109436400B CN 109436400 B CN109436400 B CN 109436400B CN 201811352365 A CN201811352365 A CN 201811352365A CN 109436400 B CN109436400 B CN 109436400B
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weighing
packaging
charging basket
bag clamping
bag
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CN109436400A (en
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李奇志
李奇武
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Hangzhou Ruixiang Mechanical And Electronic Technology Co ltd
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Hangzhou Ruixiang Mechanical And Electronic Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00Packaging 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
    • B65B1/30Devices or methods for controlling or determining the quantity or quality or the material fed or filled
    • B65B1/32Devices or methods for controlling or determining the quantity or quality or the material fed or filled by weighing
    • B65B1/34Adjusting weight by trickle feed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00Packaging 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
    • B65B1/28Controlling escape of air or dust from containers or receptacles during filling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/06Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers
    • B65B39/08Nozzles, 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Basic Packing Technique (AREA)

Abstract

The utility model provides an active carbon packagine machine that high accuracy was weighed, includes frame, transition feed bin, packing unit and controlling means, the packing unit includes unloading unit, storage bucket, is used for detecting the weighing unit and the bag clamping mechanism of active carbon weight in the storage bucket, and the weighing unit of every packing unit sets up at least three, and at least three weighing unit equidistant arranges on storage bucket outer week, and every weighing unit includes a protruding upper groove, a round steel ball, a recessed lower groove and a weighing sensor, upper groove fixed mounting is on the storage bucket weighing journal, the recess is just arranged and the recess camber of both is the same about lower groove and the upper groove, round steel ball is located in upper groove and the lower groove; the lower groove is arranged at the induction end of the weighing sensor, and the other end of the weighing sensor is arranged on the frame. The invention provides an active carbon packaging machine with good stability, high-precision weighing and no dust in the packaging process and a packaging method thereof.

Description

High-precision weighing and packaging process dust-free active carbon packaging machine and packaging method thereof
Technical Field
The invention relates to the field of packaging of powder (solid) materials, in particular to a dust-free active carbon packaging machine in the process of high-precision weighing and packaging and a packaging method thereof.
Background
When the existing packaging machine is used for weighing, a weighing sensor and lever structure mode is generally adopted for installation measurement, when a charging barrel shakes, the gravity center of the charging barrel deviates, even if the small structure position changes, the tension force of the sensor is easily amplified in the lever structure, so that the deviation of a detection result is caused; in addition, when pressing from both sides the bag, loosen the bag, produce certain vibrations to the storage bucket, through lever structure's amplification, also make sensor detect signal inaccurate, simultaneously, the bag mechanism that presss from both sides in place in current packagine machine adopts one step to press from both sides bag and loosen the bag mode, still can make the dust in the wrapping bag overflow, and the packaging environment receives the influence.
Disclosure of Invention
In order to overcome the defects of lower weighing precision and instability of the existing packaging machine, the invention provides the active carbon packaging machine with good stability, high-precision weighing and no dust in the packaging process and the packaging method thereof.
The technical scheme adopted for solving the technical problems is as follows:
The active carbon packaging machine comprises a frame, a transition bin, a packaging unit and a control device, wherein a feed inlet of the transition bin is connected with a discharge outlet of a feeding mechanism, an arch breaking mechanism for stirring materials in the transition bin is arranged in the transition bin, and the arch breaking mechanism is connected with an arch breaking mechanism motor; the feeding mechanism, the transition bin, the packaging unit and the control device are all arranged on the frame, the packaging unit comprises a discharging unit, a charging basket, a weighing unit and a bag clamping mechanism, the weighing unit is used for detecting the weight of active carbon in the charging basket, the discharging unit is positioned between the transition bin and the charging basket and connects the transition bin and the charging basket, and the bag clamping mechanism is arranged at a discharge hole of the charging basket; the weighing units of each packaging unit are at least three, the at least three weighing units are arranged on the periphery outside the charging basket at equal intervals, each weighing unit comprises an upward convex upper groove, a round steel ball, a downward concave lower groove and a weighing sensor, the upper groove is fixedly arranged on a charging basket weighing lug, the charging basket weighing lug is fixed on the outer wall of the charging basket, the lower groove and the upper groove are arranged in an up-down opposite mode, the curvatures of the grooves are the same, and the round steel ball is positioned in the upper groove and the lower groove and is simultaneously contacted with the upper groove and the lower groove respectively; the lower groove is arranged at the induction end of the weighing sensor, and the other end of the weighing sensor is arranged on the frame;
And the blanking unit, the weighing sensor and the bag clamping mechanism are connected with the control device.
Further, the bag clamping mechanism comprises at least two bag clamping units and a clamping plate for clamping an active carbon packaging bag, the at least two bag clamping units are uniformly distributed outside a discharge hole of a charging basket for a circle, each bag clamping unit comprises an upper short-stroke bag clamping cylinder and a lower long-stroke bag clamping cylinder, a piston rod of the upper short-stroke bag clamping cylinder is connected with a charging basket bag clamping support lug, the charging basket bag clamping support lug is positioned below a charging basket weighing support lug and is fixed on the outer wall of the charging basket, a cylinder body of the upper short-stroke bag clamping cylinder is fixedly connected with a cylinder body of the lower long-stroke bag clamping cylinder, a piston rod of the lower long-stroke bag clamping cylinder is connected with the clamping plate, and the stroke of the upper short-stroke bag clamping cylinder is smaller than that of the lower long-stroke bag clamping cylinder; the upper short-stroke bag clamping cylinder and the lower long-stroke bag clamping cylinder are respectively connected with the control device.
Still further, feeding mechanism includes mixer, first unloading valve and second unloading valve, first unloading valve is located the top of second unloading valve, the discharge gate of mixer passes through first unloading valve and is connected with connecting portion, connecting portion pass through the second unloading valve and are connected with the upper end of middle soft coupling, the lower extreme of middle soft coupling is connected with the feed inlet of transition feed bin.
Still further, the packaging unit also comprises a vacuumizing device, wherein the vacuumizing device comprises a vacuum pump, a vacuum tank, a vacuum control valve, a microporous pipe with micropores on the pipe wall, a lifting cylinder for lifting the microporous pipe up and down and a microporous pipe dredging device for dredging the microporous pipe, an air inlet of the vacuum pump is communicated with an air outlet of the vacuum tank, an air inlet of the vacuum tank is communicated with one end of an air conveying pipe through the vacuum control valve, and the other end of the air conveying pipe is communicated with the air suction pipe; the micro-pore pipe is vertically arranged, the lifting cylinder is positioned above the charging basket, the upper end of the micro-pore pipe is connected with the piston rod of the lifting cylinder through an air exhaust pipe, and the lower end of the micro-pore pipe penetrates through the discharge hole of the charging basket and stretches into the active carbon packaging bag; the microporous pipe dredging device is communicated with one end of the gas pipe through a dredging control valve, and the lifting cylinder is connected with the control device.
Still further, the unloading unit includes fast-feeding unloading valve, slow-feeding unloading valve, unloading screw rod and unloading motor, the unloading screw rod is connected with the output of unloading motor, be equipped with two discharge gates that correspond with every unloading unit on the transition feed bin, one of them discharge gate is connected with the feed inlet of storage bucket through fast-feeding unloading valve, and another one of them discharge gate is connected with the feed inlet of unloading screw rod through slow-feeding unloading valve, the discharge end of unloading screw rod is connected with the feed inlet of storage bucket.
Still further, still be equipped with dust collector on the storage bucket, dust collector's dust removal butterfly valve with controlling means connects.
Still further, the packing unit is provided with two, and two packing units are equally spaced apart.
The packaging method of the active carbon packaging machine with high-precision weighing and dust-free packaging processes sequentially comprises the following steps of: feeding, weighing, clamping and releasing bags;
The feeding process comprises the following steps: firstly, starting to operate the mixer, controlling a first blanking valve of the mixer to be opened by a control device, partially opening a second blanking valve, limiting the feeding speed and keeping uniform feeding, and completely opening the second blanking valve when the first blanking valve is closed so as to avoid blocking a connecting part during next feeding;
In the feeding process, the control device controls the arch breaking mechanism motor to drive the arch breaking mechanism to stir the powdery activated carbon in the transition bin; the control device controls the bag clamping mechanism to clamp bags, meanwhile, a quick-adding and discharging valve of each discharging unit is opened, quick-adding and discharging is carried out, active carbon directly enters a charging basket, when the dynamic weight is close to a packaging rated value, the quick-adding and discharging valve is closed, a discharging motor is controlled by the control device, the conveying speed of a discharging screw rod is further controlled, meanwhile, a slow-adding and discharging valve is opened, and a weighing sensor detects the weight of powdery active carbon in the charging basket in real time in the discharging process of the discharging unit until the weight reaches the packaging rated value; after weighing, the vacuum pumping device vacuumizes the activated carbon packaging bag, the control device controls the dust removing butterfly valve to remove dust by the dust removing device, and the bag clamping mechanism is controlled to take down the activated carbon packaging bag for sealing, so that the bag taking process is completed;
Wherein the weighing process comprises the following steps: in the process of containing powdery activated carbon, the gravity of the activated carbon packaging bag is transmitted to a charging basket, the charging basket transmits force to a weighing lug of a feeding barrel, the charging basket weighing lug transmits force to weighing sensors through round steel balls, so that each weighing sensor measures the weight of the borne powdery activated carbon, and finally a plurality of weighing sensors perform data fusion processing through a control device to obtain the weight of the powdery activated carbon in the activated carbon packaging bag;
And (3) bag clamping process: firstly, the upper short-stroke bag clamping cylinder is started, then the lower long-stroke bag clamping cylinder is started, namely, the piston rod of the corresponding cylinder is retracted, and because the stroke of the upper short-stroke bag clamping cylinder is smaller than that of the lower long-stroke bag clamping cylinder, only the first smaller impact has an influence on weight detection, the second larger impact is transmitted to the charging basket after being filtered and buffered by the upper short-stroke bag clamping cylinder, and thus the influence on the detection of a weighing sensor in the bag clamping impact process is effectively reduced;
And (3) bag removing process: the method comprises the steps of loosening an upper short-stroke bag clamping cylinder, loosening a lower long-stroke bag clamping cylinder, namely, extending out of a piston rod of the corresponding cylinder, and enabling a small gap to be reserved between a bag opening of an active bag packaging bag and a charging basket when the upper short-stroke bag clamping cylinder is loosened.
Further, the packaging method further comprises a vacuumizing process, wherein the vacuumizing process is performed after the packaging weighing is completed; the vacuumizing process comprises the following steps:
firstly, setting the times of vacuumizing, the time of vacuumizing each time and the back blowing dredging time on a control device according to the type and the weight of powdery active carbon;
then, the control device controls the lifting air cylinder to drive the air suction pipe to move downwards, and meanwhile, the air suction pipe drives the microporous pipe to pass through the discharge hole of the charging basket downwards and extend into the active carbon packaging bag all the time, and the movement of the lifting air cylinder is stopped;
Then, the control device controls the vacuumizing control valve to be opened, so that the vacuum pump vacuumizes, platy active carbon adhered around the microporous tube is separated by reversely blowing, the agglomerated active carbon and the powdery active carbon are automatically layered, the agglomerated active carbon cannot be redispersed into powdery active carbon with high gas content under the condition of no strong stirring, the agglomerated active carbon sinks to the bottom of the bag under the action of gravity, the powdery active carbon with light density floats upwards, the powdery active carbon with high gas content floating upwards is pumped in the next time, the pumping efficiency is improved, the control device controls the lifting cylinder to drive the pumping air pipe to move upwards, and meanwhile, the pumping air pipe drives the microporous tube to move upwards until the agglomerated active carbon is separated from the discharge hole of the lower charging basket, so that the primary vacuumizing process is completed; repeating the steps, and exhausting for multiple times, so as to discharge the gas of the powdery active carbon and achieve the rated volume and the rated weight; when the set vacuumizing time is reached, closing the vacuumizing control valve;
after the primary vacuumizing process is completed, back-blowing air, if the microporous tube is blocked, the microporous tube is dredged by the microporous tube dredging device, and meanwhile, activated carbon hardened on the microporous tube is blown off.
The beneficial effects of the invention are mainly shown in the following steps: more than three weighing units are arranged at equal intervals on the periphery of the charging basket, so that weighing is more accurate; in addition, due to the mutual cooperation of the two bag clamping cylinders of the bag clamping mechanism, the symmetrical weight unit is smaller in influence and higher in stability, meanwhile, bag clamping operation is facilitated, and meanwhile, pollution caused by dust overflow is reduced.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a front view of the weighing cell.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a top view of fig. 3.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 5, an active carbon packaging machine with high precision weighing and dust-free packaging processes comprises a frame, a transition bin 2, a packaging unit and a control device, wherein a feed inlet of the transition bin 2 is connected with a discharge port of a feeding mechanism, an arch breaking mechanism for stirring materials in the transition bin 2 is arranged in the transition bin 2, and the arch breaking mechanism is connected with an arch breaking mechanism motor 8; the feeding mechanism, the transition bin 2, the packaging unit and the control device are all arranged on the frame, the packaging unit comprises a discharging unit 3, a charging basket 4, a weighing unit 5 for detecting the weight of active carbon in the charging basket 4 and a bag clamping mechanism, the discharging unit 3 is positioned between the transition bin 2 and the charging basket 4 and connects the transition bin 2 and the charging basket 4, and the bag clamping mechanism is arranged at a discharge hole of the charging basket 4; the weighing units 5 of each packaging unit are at least three, the at least three weighing units are arranged on the periphery of the outer side of the charging basket 4 at equal intervals, each weighing unit 5 comprises an upward convex upper groove 51, a round steel ball 52, a downward concave lower groove 53 and a weighing sensor 54, the upper groove 51 is fixedly arranged on a charging basket weighing lug 55, the charging basket weighing lug 55 is fixedly arranged on the outer wall of the charging basket 4, the lower groove 53 and the upper groove 51 are vertically opposite and have the same groove curvature, and the round steel ball 52 is positioned in the upper groove 51 and the lower groove 53 and is simultaneously contacted with the upper groove 51 and the lower groove 53 respectively; the lower groove 53 is arranged at the induction end of the weighing sensor 54, and the other end of the weighing sensor 54 is arranged on the frame;
the blanking unit 3, the weighing sensor 54 and the bag clamping mechanism are all connected with the control device 9.
Further, the bag clamping mechanism comprises at least two bag clamping units and a clamping plate for clamping an active carbon packaging bag, the at least two bag clamping units are uniformly distributed on the periphery outside a discharge hole of the charging basket 4, each bag clamping unit comprises an upper short-stroke bag clamping cylinder 61 and a lower long-stroke bag clamping cylinder 62, a piston rod of the upper short-stroke bag clamping cylinder 61 is connected with a charging basket bag clamping support lug 63, the charging basket bag clamping support lug 63 is positioned below a charging basket weighing support lug 55 and is fixed on the outer wall of the charging basket 4, a cylinder body of the upper short-stroke bag clamping cylinder 61 is fixedly connected with a cylinder body of the lower long-stroke bag clamping cylinder 62, and a piston rod of the lower long-stroke bag clamping cylinder 62 is connected with the clamping plate; the stroke of the upper short-stroke bag clamping cylinder is smaller than that of the lower long-stroke bag clamping cylinder; the upper short-stroke bag clamping cylinder 61 and the lower long-stroke bag clamping cylinder 62 are respectively connected with a control device.
Still further, feeding mechanism includes mixer 1, first unloading valve 13 and second unloading valve 14, first unloading valve 13 is located the top of second unloading valve 14, the discharge gate of mixer 1 is connected with connecting portion through first unloading valve 13, connecting portion is connected with the upper end of middle flexible coupling 15 through second unloading valve 14, the lower extreme of middle flexible coupling 15 is connected with the feed inlet of transition feed bin 2.
Still further, the packaging unit further comprises a vacuumizing device 7, the vacuumizing device 7 comprises a vacuum pump, a vacuum tank, a vacuum control valve, a microporous pipe 74 with micropores on the pipe wall, a lifting cylinder 71 for lifting the microporous pipe up and down, and a microporous pipe dredging device for dredging the microporous pipe 74, an air inlet of the vacuum pump is communicated with an air outlet of the vacuum tank, an air inlet of the vacuum tank is communicated with one end of an air pipe through the vacuum control valve, and the other end of the air pipe is communicated with the air exhaust pipe 73; the micro-pore pipe 74 is vertically arranged, the lifting cylinder 71 is positioned above the charging basket 4, the upper end of the micro-pore pipe 74 is connected with the lifting cylinder 71 through the air suction pipe 73, and the lower end of the micro-pore pipe 74 penetrates through the discharge hole of the charging basket 4 and stretches into the activated carbon packaging bag 10; the microporous pipe dredging device is communicated with one end of the gas pipe through a dredging control valve, and the lifting cylinder 71 is connected with the control device 9.
Still further, unloading unit 3 includes fast-feeding unloading valve 31, slowly adds unloading valve 32, unloading screw rod and unloading motor 33, the unloading screw rod is connected with the output of unloading motor 33, be equipped with two discharge gates that correspond with every unloading unit 3 on the transition feed bin 2, one of them discharge gate is connected with the feed inlet of storage bucket 4 through fast-feeding unloading valve 31, and another one is connected with the feed inlet of unloading screw rod through slowly adding unloading valve 32, the discharge end of unloading screw rod is connected with the feed inlet of storage bucket 4.
Still further, still be equipped with dust collector on the storage bucket 4, dust collector's dust removal butterfly valve with controlling means 9 is connected.
Still further, the packing unit is provided with two, and two packing units are equally spaced apart.
In this embodiment, micropore pull throughs include air tank and mediation cylinder, the mediation cylinder includes the cylinder body, be equipped with the piston in the cylinder body, the air tank communicates through the cylinder body of air control valve and piston one side, the cylinder body of piston opposite side through the mediation control valve with the one end intercommunication of gas-supply pipe, the other end of gas-supply pipe with micropore pipe intercommunication.
As shown in fig. 1 and 2, the lifting cylinder 71 is mounted on the frame through a cylinder support frame 72, and the first blanking valve 13, the second blanking valve 14, the fast-feeding blanking valve 31 and the slow-feeding blanking valve 32 are all connected with the control device 9.
As shown in fig. 3 and 4, the weighing cell 5 is cantilever type, and the curvature of the upper groove 51 and the lower groove 53 is larger than that of the spherical surface of the round steel ball 52. The cylinder inner diameter of the upper short-stroke bag clamping cylinder 61 is the same as the cylinder inner diameter of the lower long-stroke bag clamping cylinder 62, and the length of the cylinder of the upper short-stroke bag clamping cylinder 61 is smaller than that of the cylinder of the lower long-stroke bag clamping cylinder 62; the design of more than three weighing units 5 is beneficial to reducing fluctuation of impact force symmetrical weight detection process generated in the process of up-down bag clamping of the bag clamping mechanism.
The frame comprises a main support 11 and a branch support 12, and each weighing sensor 54 and the charging basket 4 are arranged on the branch support 12.
The packaging method of the invention comprises the following steps: the method comprises the following steps: feeding, weighing, clamping and releasing bags;
The feeding process comprises the following steps: firstly, the mixer 1 starts to operate, the control device 9 controls the first blanking valve 13 of the mixer 1 to be opened, the second blanking valve 14 is partially opened, the feeding speed is limited, the feeding uniformity is kept, and when the first blanking valve 13 is closed, the second blanking valve 14 is fully opened, so that the connection part is prevented from being blocked when the next feeding is performed;
In the feeding process, the control device controls the arch breaking mechanism motor 8 to drive the arch breaking mechanism to stir the powdery activated carbon in the transition bin 2; the control device controls the bag clamping mechanism to clamp bags, meanwhile, the quick-adding and discharging valve 31 of each discharging unit 3 is opened, quick discharging is carried out, active carbon directly enters the charging bucket 4, when the dynamic weight approaches a packaging rated value, the quick-adding and discharging valve is closed, the discharging motor 33 is controlled through the control device 9, the conveying speed of a discharging screw rod is further controlled, meanwhile, the slow-adding and discharging valve 32 is opened, the weighing sensor 54 detects the weight of powdery active carbon in the charging bucket in real time in the discharging process of the discharging units 3 until the weight of the powdery active carbon reaches the packaging rated value, and the slow-adding and discharging valve 32 is closed; then, the vacuumizing device 9 vacuumizes the active carbon packaging bag, after the vacuumizing is finished, the control device 9 controls the dust removing butterfly valve to remove dust by the dust removing device, and the active carbon packaging bag is taken down and sealed by controlling the bag clamping mechanism, so that the bag taking process is completed;
The weighing process comprises the following steps: in the process of containing powdery activated carbon, the gravity of the activated carbon packaging bag 10 is transmitted to the charging basket 4, the charging basket 4 transmits force to the charging basket weighing lugs 55, the charging basket weighing lugs 55 transmit force to the weighing sensors 54 through the round steel balls 52, so that each weighing sensor measures the weight of the borne powdery activated carbon, and finally the weighing sensors perform data fusion processing through the control device to obtain the weight of the powdery activated carbon in the activated carbon packaging bag. The round steel ball 52 has two functions, one is positioning, when the charging basket 4 is deviated, the round steel ball 52 passes through the upper groove 51 and the lower groove 53 to reset, so that the weighing position is unchanged and more accurate; the other is that the stability is better, and when the charging basket 1 is swayed, the round steel ball 52 and the upper groove 51 and the lower groove 53 are matched, so that the charging basket 4 cannot deviate.
And (3) bag clamping and removing processes: when the bag is clamped, the upper short-stroke bag clamping cylinder 61 is started, and then the lower long-stroke bag clamping cylinder 62 is started, so that the piston rod of the corresponding cylinder is retracted, and the stroke of the upper bag clamping cylinder 61 is smaller than that of the lower bag clamping cylinder 62, so that the first smaller impact has an influence on weight detection, and the second larger impact is transmitted to the charging basket through the filtering and buffering of the upper bag clamping cylinder 61, so that the influence of the bag clamping impact process on the detection of the weighing sensor 54 is effectively reduced; when the bag is taken off, the upper short-stroke bag clamping cylinder 61 is loosened firstly, the long-stroke lower bag clamping cylinder 62 is loosened, namely, the piston rod of the corresponding cylinder is extended, so that only a very narrow small seam is formed in the first step, the inside and outside negative pressure difference in the aerodynamic principle is utilized, dust in the charging basket 4 can not overflow after the active carbon packaging bag 10 is taken down, and the space for bagging is enlarged in the second step, so that bagging is facilitated.
After the package weighing is completed, vacuumizing is carried out, and the vacuumizing process is as follows:
firstly, setting the times of vacuumizing and the time of vacuumizing and the back blowing dredging time of each time on a control device according to the type and weight of powdery activated carbon;
Then, the lifting cylinder 71 is controlled by the control device to drive the air extraction pipe 73 to move downwards, and meanwhile, the air extraction pipe 73 drives the microporous pipe 74 to pass through the discharge hole of the charging basket 4 downwards and extend into the activated carbon packaging bag 10 all the time, and the movement of the lifting cylinder 71 is stopped;
Then, the control device 9 controls the vacuumizing control valve to be opened, so that the vacuum pump vacuumizes, platy active carbon adhered around the microporous pipes is separated by reversely blowing, the agglomerated active carbon and the powdery active carbon are automatically layered, the agglomerated active carbon cannot be redispersed into powdery active carbon with high gas content under the condition of no strong stirring, the agglomerated active carbon sinks to the bottom of the bag under the action of gravity, the powdery active carbon with light density floats upwards, the powdery active carbon with high gas content floating upwards is pumped when pumped next time, the pumping efficiency is improved, the control device controls the lifting cylinder 71 to drive the pumping air pipe 73 to move upwards, and meanwhile, the pumping air pipe 73 drives the microporous pipe 74 to move upwards until the agglomerated active carbon is separated from a discharge hole of the lower charging basket 4, so that the primary vacuumizing process is completed; repeating the steps, and exhausting for multiple times, so as to discharge the gas of the powdery active carbon and achieve the rated volume and the rated weight; when the set vacuumizing time is reached, closing the vacuumizing control valve;
After the primary vacuumizing process is completed, back-blowing air, if the microporous tube is blocked, the microporous tube 74 is dredged by the microporous tube dredging device, and meanwhile, activated carbon hardened on the microporous tube is blown off.
The air in the air box is controlled to enter the cylinder body of the dredging cylinder by controlling the air control valve, the piston is pushed, the air on the other side of the piston is pushed into the microporous tube 74 through the air pipe, the blocking objects in the microporous tube 74 are flushed out under the action of high-pressure air, and the activated carbon caking around the microporous tube is flushed out; of course, the microporous dredging device can also adopt other dredging devices capable of blowing; the dredging gas and the vacuumized gas flow in the dredging process are opposite in direction, so that the dredging gas is called reverse gas dredging.
The air exhaust pipe 73 is vertically arranged, a piston rod of the lifting cylinder is connected with the upper end of the air exhaust pipe 73, the upper end of the air exhaust pipe 73 is also communicated with the air delivery pipe, and the lower end of the air exhaust pipe 73 passes through a mounting hole at the top of the charging basket 4 and is communicated with the upper end of the microporous pipe 74.
The microporous tube 74 may be a microporous mesh tube or a microporous tank. Of course, other microporous structures that allow for evacuation may be used.
The invention directly supplies materials through the mixer 1, reduces conveying devices, and reduces the cost of user equipment, the energy consumption and the maintenance cost.
The packaging machine adopts a direct feeding mode of the mixer 1, and an intermediate material conveying device is not adopted any more; if the conveying screw rod is used, the energy consumption is saved, meanwhile, the equipment cost is saved, the fact that the air content of different activated carbons is different, the water content is different, the viscosity is different is also considered, in order to enable the blanking amount to be uniform and controllable, and the blocking material is not bonded, so that a double-valve structure is adopted, when the first blanking valve 13 of the mixer is opened, the second blanking valve 14 of the mixer is partially opened, the feeding speed is limited, the feeding is kept uniform, when the first blanking valve 13 of the mixer is closed, the second blanking valve 14 of the mixer is fully opened, and the situation that residual materials remain between the first blanking valve 13 and the second blanking valve 14 of the mixer when the first blanking valve 13 of the mixer is closed can be effectively avoided, so that the blocking is caused when the next feeding.
In addition, because the activated carbon factory meets market demands and needs higher packing weighing precision, activated carbon with different components, different air contents and different densities or specific volumes, the traditional packing weighing method is difficult to meet user demands, and measures are taken structurally firstly to reduce the influence of internal impact load on the weighing precision:
(1) Structurally, a multi-sensor uniform support measurement method is adopted, and the lever amplification influence of dynamic impact variable on weighing precision during bag clamping and discharging in the system when the lever type sensor arrangement is adopted is reduced
(2) The two-step cylinder lifting bag clamping method is adopted during bag clamping, so that the influence of symmetrical zero resetting of the bag clamping impact load is further reduced, namely, when the bag is clamped, the upper short-stroke bag clamping cylinder is lifted firstly, the impact load generated by the short stroke is smaller, in addition, the time for weighing the bag is longer, so that the actual weight influence when the bag is placed in a zero position is smaller, meanwhile, the upper short-stroke cylinder arrives at the position, the lower long-stroke bag clamping cylinder is lifted, and the large impact load generated by the stroke length of the lower long-stroke cylinder can be effectively relieved through the upper short-stroke cylinder to the weighing zero influence;
(3) The quick-adding and blanking valve 31 and the slow-adding and blanking valve 32 are adopted for blanking, when the blanking starts, the quick-adding and blanking valve 31 is opened, the quick-adding and blanking is performed, when the dynamic weight is close to the rated value of the package, the conveying speed of a blanking screw is controlled through the control device 9, meanwhile, the slow-adding and blanking valve 32 is used for blanking, the blanking quantity and the speed are controllable, and the influence of the lag weight and the impact quantity of a material block on the bottom of a bag on the final weighing result when the blanking is uneven is reduced.
The invention adopts the two-step cylinder to remove the bag, thereby improving the dust collection effect and reducing the dust overflow amount;
When the bag is removed, a two-step cylinder bag loosening method is adopted, namely, the upper short-stroke bag clamping cylinder is firstly used for loosening 61, so that a small gap is reserved between the bag opening and the charging basket 4, at this time, the internal pressure is smaller than the external atmospheric pressure under the conditions that the activated carbon in the bag is just vacuumized and the dust removing butterfly valve at the top of the packaging machine is opened for dust removal, and fine activated carbon dust suspended in the bag can be effectively prevented from overflowing into the air when the bag is removed.

Claims (6)

1. The active carbon packaging machine comprises a frame, a transition bin, a packaging unit and a control device, wherein a feed inlet of the transition bin is connected with a discharge outlet of a feeding mechanism, an arch breaking mechanism for stirring materials in the transition bin is arranged in the transition bin, and the arch breaking mechanism is connected with an arch breaking mechanism motor; the feeding mechanism, the transition bin, the packaging unit and the control device are all arranged on the frame, the packaging unit comprises a discharging unit, a charging basket, a weighing unit and a bag clamping mechanism, the weighing unit is used for detecting the weight of active carbon in the charging basket, the discharging unit is positioned between the transition bin and the charging basket and connects the transition bin and the charging basket, and the bag clamping mechanism is arranged at a discharge hole of the charging basket; the method is characterized in that: the weighing units of each packaging unit are at least three, the at least three weighing units are arranged on the periphery outside the charging basket at equal intervals, each weighing unit comprises an upward convex upper groove, a round steel ball, a downward concave lower groove and a weighing sensor, the upper groove is fixedly arranged on a charging basket weighing lug, the charging basket weighing lug is fixed on the outer wall of the charging basket, the lower groove and the upper groove are arranged in an up-down opposite mode, the curvatures of the grooves are the same, and the round steel ball is positioned in the upper groove and the lower groove and is simultaneously contacted with the upper groove and the lower groove respectively; the lower groove is arranged at the induction end of the weighing sensor, and the other end of the weighing sensor is arranged on the frame;
the discharging unit, the weighing sensor and the bag clamping mechanism are all connected with the control device; the bag clamping mechanism comprises at least two bag clamping units and a clamping plate for clamping an active carbon packaging bag, wherein the at least two bag clamping units are uniformly distributed on the periphery outside a discharge hole of a charging basket, each bag clamping unit comprises an upper short-stroke bag clamping cylinder and a lower long-stroke bag clamping cylinder, a piston rod of the upper short-stroke bag clamping cylinder is connected with a charging basket bag clamping support lug, the charging basket bag clamping support lug is positioned below a charging basket weighing support lug and is fixed on the outer wall of the charging basket, a cylinder body of the upper short-stroke bag clamping cylinder is fixedly connected with a cylinder body of the lower long-stroke bag clamping cylinder, and a piston rod of the lower long-stroke bag clamping cylinder is connected with the clamping plate; the stroke of the upper short-stroke bag clamping cylinder is smaller than that of the lower long-stroke bag clamping cylinder; the upper short-stroke bag clamping cylinder and the lower long-stroke bag clamping cylinder are respectively connected with the control device;
The packaging unit further comprises a vacuumizing device, wherein the vacuumizing device comprises a vacuum pump, a vacuum tank, a vacuum control valve, a microporous pipe with micropores on the pipe wall, a lifting cylinder for lifting the microporous pipe up and down and a microporous pipe dredging device for dredging the microporous pipe, an air inlet of the vacuum pump is communicated with an air outlet of the vacuum tank, an air inlet of the vacuum tank is communicated with one end of an air conveying pipe through the vacuum control valve, and the other end of the air conveying pipe is communicated with an air suction pipe; the micro-pore pipe is vertically arranged, the lifting cylinder is positioned above the charging basket, the upper end of the micro-pore pipe is connected with the lifting cylinder through an air suction pipe, and the lower end of the micro-pore pipe penetrates through a discharge hole of the charging basket and stretches into the active carbon packaging bag; the microporous pipe dredging device is communicated with one end of the gas pipe through a dredging control valve, and the lifting cylinder is connected with the control device;
The charging basket is also provided with a dust removing device, and a dust removing butterfly valve of the dust removing device is connected with the control device.
2. The high-precision weighing and packaging process dust-free activated carbon packaging machine as claimed in claim 1, wherein: the feeding mechanism comprises a mixer, a first blanking valve and a second blanking valve, wherein the first blanking valve is positioned above the second blanking valve, a discharge hole of the mixer is connected with a connecting part through the first blanking valve, the connecting part is connected with the upper end of the middle soft connection through the second blanking valve, and the lower end of the middle soft connection is connected with a feed inlet of a transition bin.
3. The high-precision weighing and packaging process dust-free activated carbon packaging machine as claimed in claim 1 or 2, wherein: the blanking unit comprises a fast-feeding blanking valve, a slow-feeding blanking valve, a blanking screw and a blanking motor, wherein the blanking screw is connected with the output end of the blanking motor, two discharge ports corresponding to each blanking unit are arranged on the transition bin, one discharge port is connected with the feed inlet of the charging basket through the fast-feeding blanking valve, the other discharge port is connected with the feed end of the blanking screw through the slow-feeding blanking valve, and the discharge end of the blanking screw is connected with the feed inlet of the charging basket.
4. A high precision weighing and packaging process dust-free activated carbon packaging machine as defined in claim 3, wherein: the two packaging units are arranged at equal intervals.
5. A packaging method of an active carbon packaging machine based on the high-precision weighing and packaging process of claim 1, which is free of dust, is characterized in that: the packaging method sequentially comprises the following steps: feeding, weighing, clamping and releasing bags;
The feeding process comprises the following steps: firstly, starting to operate the mixer, controlling a first blanking valve of the mixer to be opened by a control device, partially opening a second blanking valve, limiting the feeding speed and keeping uniform feeding, and completely opening the second blanking valve when the first blanking valve is closed so as to avoid blocking a connecting part during next feeding;
In the feeding process, the control device controls the arch breaking mechanism motor to drive the arch breaking mechanism to stir the powdery activated carbon in the transition bin; the control device controls the bag clamping mechanism to clamp bags, meanwhile, a quick-adding and discharging valve of each discharging unit is opened, quick-adding and discharging is carried out, active carbon directly enters a charging basket, when the dynamic weight is close to a packaging rated value, the quick-adding and discharging valve is closed, a discharging motor is controlled by the control device, the conveying speed of a discharging screw rod is further controlled, meanwhile, a slow-adding and discharging valve is opened, and a weighing sensor detects the weight of powdery active carbon in the charging basket in real time in the discharging process of the discharging unit until the weight reaches the packaging rated value; after weighing, the vacuum pumping device vacuumizes the activated carbon packaging bag, the control device controls the dust removing butterfly valve to remove dust by the dust removing device, and the bag clamping mechanism is controlled to take down the activated carbon packaging bag for sealing, so that the bag taking process is completed;
Wherein the weighing process comprises the following steps: in the process of containing powdery activated carbon, the gravity of the activated carbon packaging bag is transmitted to a charging basket, the charging basket transmits force to a weighing lug of a feeding barrel, the charging basket weighing lug transmits force to weighing sensors through round steel balls, so that each weighing sensor measures the weight of the borne powdery activated carbon, and finally a plurality of weighing sensors perform data fusion processing through a control device to obtain the weight of the powdery activated carbon in the activated carbon packaging bag;
And (3) bag clamping process: firstly, the upper short-stroke bag clamping cylinder is started, then the lower long-stroke bag clamping cylinder is started, namely, the piston rod of the corresponding cylinder is retracted, and because the stroke of the upper short-stroke bag clamping cylinder is smaller than that of the lower long-stroke bag clamping cylinder, only the first smaller impact has an influence on weight detection, the second larger impact is transmitted to the charging basket after being filtered and buffered by the upper short-stroke bag clamping cylinder, and thus the influence on the detection of a weighing sensor in the bag clamping impact process is effectively reduced;
And (3) bag removing process: the method comprises the steps of loosening an upper short-stroke bag clamping cylinder, loosening a lower long-stroke bag clamping cylinder, namely, extending out of a piston rod of the corresponding cylinder, and enabling a small gap to be reserved between a bag opening of an active bag packaging bag and a charging basket when the upper short-stroke bag clamping cylinder is loosened.
6. The method for packing the active carbon packing machine without dust in the process of high-precision weighing and packing according to claim 5, which is characterized in that: the packaging method also comprises a vacuumizing process; the vacuumizing process comprises the following steps:
firstly, setting the times of vacuumizing, the time of vacuumizing each time and the back blowing dredging time on a control device according to the type and the weight of powdery active carbon;
then, the control device controls the lifting air cylinder to drive the air suction pipe to move downwards, and meanwhile, the air suction pipe drives the microporous pipe to pass through the discharge hole of the charging basket downwards and extend into the active carbon packaging bag all the time, and the movement of the lifting air cylinder is stopped;
Then, the control device controls the vacuumizing control valve to be opened, so that the vacuum pump vacuumizes, platy active carbon adhered around the microporous tube is separated by reversely blowing, the agglomerated active carbon and the powdery active carbon are automatically layered, the agglomerated active carbon cannot be redispersed into powdery active carbon with high gas content under the condition of no strong stirring, the agglomerated active carbon sinks to the bottom of the bag under the action of gravity, the powdery active carbon with light density floats upwards, the powdery active carbon with high gas content floating upwards is pumped in the next time, the pumping efficiency is improved, the control device controls the lifting cylinder to drive the pumping air pipe to move upwards, and meanwhile, the pumping air pipe drives the microporous tube to move upwards until the agglomerated active carbon is separated from the discharge hole of the lower charging basket, so that the primary vacuumizing process is completed; repeating the steps, and exhausting for multiple times, so as to discharge the gas of the powdery active carbon and achieve the rated volume and the rated weight; when the set vacuumizing time is reached, closing the vacuumizing control valve;
after the primary vacuumizing process is completed, back-blowing air, if the microporous tube is blocked, the microporous tube is dredged by the microporous tube dredging device, and meanwhile, activated carbon hardened on the microporous tube is blown off.
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