A bagged material bag-breaking and filtering integrated device and application method

Abstract

The application belongs to the technical field of automatic production equipment, and particularly relates to a bagged material bag breaking and filtering and empty bag collecting integrated device and application method. The device mainly comprises a main bin body and a top dust recovery assembly; a feeding mechanism comprising a belt conveyor with a gap, a packaging bag shaping device and a bottom lifting device; a belt grabbing mechanism with translational and rotational degrees of freedom; a lifting bag cutting mechanism arranged at the bottom of the bin; a main material collecting tank and a bottom vibrating screen thereof; a first pipeline and a second pipeline respectively connected with the bottom and the tail end of the main bin body, and the two pipelines are combined into the collecting tank through a pipeline switching valve; and a fan assembly connected with the top of the collecting tank to form a global suction negative pressure. The application breaks through the industry bottleneck of traditional powder unpacking operation relying on manual work, incomplete unloading and dust pollution, eliminates the hidden troubles of residual material waste and dust leakage, and realizes the whole-process automatic closed loop from accurate positioning of the packaging bag, feeding, bag breaking and unloading to automatic stripping and discharging of the empty bag.

Description

Technical Field

[0001] This invention belongs to the field of automated production equipment technology, and particularly relates to an integrated device and application method for bagged material breaking, filtering, and empty bag collection. Background Technology

[0002] In the pipe manufacturing industry, production lines typically consume large quantities of bagged powder raw materials. Currently, the unpacking and unloading of these bagged materials largely relies on manual operation. Even in production lines that have introduced mechanical equipment, it is mostly in a semi-automated state, requiring frequent manual intervention. This manual or semi-automatic unpacking method faces a critical technical problem: it cannot achieve fully automated, continuous, and dust-free operation for unloading, waste bag disposal, and residual material recycling. Because the powder used in pipe manufacturing easily adheres to the inner wall of the packaging bag or gets stuck in corners, existing methods relying on manual shaking or simple knife cuts for gravity unloading often result in incomplete unloading. More importantly, when dealing with these incompletely emptied waste packaging bags, there is a lack of a complete, interconnected system capable of automatically removing empty bags in a closed environment and performing gas-solid separation and recycling of the residual powder inside. This not only causes significant raw material waste and serious workshop dust pollution but also makes the entire feeding process a bottleneck restricting the automation of pipe production lines, preventing them from truly entering a fully automated and unmanned production stage. Summary of the Invention

[0003] To address the problems of incomplete unloading and inability to automatically seal and separate waste bags from residual materials in existing manual or semi-automatic unpacking methods, which lead to raw material waste, dust pollution, and the inability to achieve truly fully automated continuous operation, this invention proposes an integrated device and application method for bagged material unpacking, filtration, and empty bag collection.

[0004] This invention is achieved through the following technical solution: An integrated device for bagged material breaking, filtering, and empty bag collection includes: Main warehouse body; The feeding mechanism has its output end extended to the feeding station of the main hopper. The feeding mechanism includes a conveyor belt, a material detection sensor set on the conveyor belt, and a lifting mechanism set below the conveyor belt. A gap is opened on the support surface of the conveyor belt, and the lifting end of the lifting mechanism is directly opposite the gap. A bag-breaking gripping mechanism is installed inside the main compartment and includes gripping claws and a transmission assembly. The surface of the gripping claws is provided with arrayed pointed tips. The gripping claws are connected to the transmission assembly, which has translational freedom in the horizontal direction and rotational freedom about the horizontal axis. The gripping claws in the initial gripping position are located in the corresponding area above the lifting mechanism. A bag-cutting mechanism is provided at the bag-breaking station at the bottom of the main compartment. The bag-cutting mechanism includes a lifting drive and a knife holder provided at the top of the lifting drive. The knife holder is located below the horizontal translational movement trajectory of the gripper. The main material collection tank is located outside the main silo. The main material collection tank has an inlet in the middle of its side wall and an outlet at its bottom. A vibrating screen assembly for particle size separation and filtration of the material is provided at the outlet. The first pipe has one end connected to the bottom of the main compartment; The second pipe has one end connected to the tail end of the main chamber; the other end of the first pipe and the other end of the second pipe merge and connect to the same feed inlet. A pipeline switching valve is installed at the junction of the first pipeline and the second pipeline or on the first pipeline, and is used to switch the on / off state of the gas passage between the first pipeline and the second pipeline. The fan assembly has its air inlet connected to the top of the main material collection tank to create a negative pressure suction airflow in the main material collection tank, the first pipe and the second pipe; The dust collection component is located on the top of the main chamber.

[0005] Furthermore, the discharge port is provided with a butterfly valve and the vibrating screen assembly in sequence along the material falling direction, and the discharge port and the feed end of the vibrating screen assembly are connected by a flexible connector. The butterfly valve is located between the bottom of the main material collection tank and the flexible connector, and is used to control the opening and closing of the material entering the vibrating screen assembly.

[0006] Furthermore, a waste bag collection cylinder is connected in series on the second pipeline, and the section of the second pipeline located downstream of the waste bag collection cylinder along the airflow conveying direction serves as a residual material recycling branch that merges with the other end of the first pipeline.

[0007] Furthermore, the device also includes a controller; The material detection sensor is electrically connected to the input terminal of the controller; The output of the controller is electrically connected to the drive motor of the conveyor belt, the drive component of the lifting mechanism, the control terminal of the pipeline switching valve, and the transmission component of the bag-breaking gripping mechanism.

[0008] Furthermore, the dust recovery assembly includes a dust collection housing, an exhaust fan, a filter screen, and a pulse valve; The dust collection housing is installed on the top of the main chamber, and the bottom of the dust collection housing is provided with an open opening, which is directly connected to the inner cavity of the main chamber. The filter screen is disposed inside the dust collection housing and located upstream of the airflow path, and the exhaust fan is disposed downstream of the filter screen and its air inlet is connected to the inner cavity of the dust collection housing. The pulse valve is installed on the dust collection housing with its backflush end facing the filter screen, and the air inlet end of the pulse valve is used to connect to the pulse air source.

[0009] Furthermore, the transmission assembly includes a synchronous belt drive motor and a synchronous belt guide rail mechanism that cooperates with the synchronous belt drive motor, and the gripper is slidably suspended on the synchronous belt guide rail mechanism.

[0010] Furthermore, the blade holder of the bag cutting mechanism has a cross-shaped or X-shaped structure, and the top edge of the blade holder is provided with a cutting blade.

[0011] Furthermore, the main compartment is provided with a first sub-compartment and a second sub-compartment arranged in parallel; The bag-breaking gripping mechanism, the bag-cutting mechanism, and the lifting mechanism are each provided in twos, and are arranged independently in conjunction with the first sub-compartment and the second sub-compartment respectively; The first sub-compartment and the second sub-compartment share the same conveyor belt; The bottom of the first sub-compartment and the bottom of the second sub-compartment are both connected to one end of the first pipe, sharing the negative pressure suction airflow generated by the fan assembly.

[0012] Furthermore, the feeding mechanism also includes a guide side plate, which is disposed on at least one side of the conveyor belt and extends along the conveying direction of the conveyor belt, and forms a guide channel between the guide side plate and the conveyor belt for limiting the lateral displacement of the packaging bag.

[0013] This invention also proposes an application method for an integrated device for breaking open bags, filtering, and collecting empty bags of bagged materials, comprising the following steps: S1. Feeding, positioning and gripping: The packaging bag is conveyed by the conveyor belt. When it touches the material detection sensor, the conveyor belt stops running. The lifting mechanism rises from the gap of the conveyor belt support surface and lifts the packaging bag to fit against the bag-breaking gripping mechanism, so that the pointed tip on the gripping claw inserts into and fixes the packaging bag. Then the lifting mechanism lowers and resets, and the conveyor belt resumes running. S2. Bag breaking and tumbling: The transmission component drives the gripper to move the packaging bag horizontally to the bag breaking station at the bottom of the main compartment. The cutter of the bag cutting mechanism rises and cuts the bottom of the packaging bag. After cutting, the transmission component drives the gripper to perform a circular rotation motion around the horizontal axis to tumble and shake the material inside the packaging bag to the bottom of the main compartment. S3. Main air path conveying: The pipeline switching valve opens the first pipeline. The material falling into the bottom of the main silo is drawn and transported to the main material collection tank through the first pipeline under the negative pressure suction airflow generated by the fan assembly. S4. Air path switching and empty bag separation and recycling: The gripper moves the empty main material packaging bag to the tail end of the main chamber. The pipeline switching valve closes the air path of the first pipeline to prevent air leakage and cause the negative pressure suction airflow to concentrate in the second pipeline. The packaging bag is sucked into the second pipeline, where the waste empty bag is discharged into the waste bag collection cylinder. The residual material attached to the empty bag is separated by airflow and then transported to the main material collection tank by the residual material recycling branch. S5. Synchronous dust removal and filtration screening: During the operation of the device, the dust recovery component simultaneously performs negative pressure adsorption on the dust raised in the main chamber, and uses a pulse valve to periodically backflush the dust back to the bottom of the main chamber for re-transportation; at the same time, the material entering the main material collection tank falls into the vibrating screen component through the discharge port for particle size separation and filtration.

[0014] The beneficial effects of this invention are: (1) This invention breaks through the limitations of traditional equipment that relies solely on gravity for natural unloading. The transmission components of the bag-breaking gripping mechanism not only have translational freedom but also introduce circumferential rotational freedom around the horizontal axis. After the bottom blade cuts the packaging bag over a large area, the gripping claw drives the packaging bag to perform circumferential rolling motion. Through the centrifugal force generated by the rotation and the constantly alternating direction of gravity, the packaging bag is shaken off forcefully, and the powder raw materials that are easy to stick to the wall or get stuck in the corners of the bag are completely shaken off, fundamentally solving the problem of large residual amount and serious waste of raw materials in traditional unpacking. (2) In the process of the waste packaging bag being sucked into the second pipe, the residual powder attached to the bag body is peeled off by high-speed airflow, the waste bag enters the collection cylinder, and the residue is returned to the main material collection tank through the recycling branch, thus realizing fully automatic physical separation of waste bags and recycling of residue. (3) During the unpacking process, the dust raised by the exhaust fan is attached to the filter screen; then the pulse valve blows high-pressure airflow instantly, shakes the dust off and drops it back to the bottom of the main chamber in place, and re-enters the pneumatic conveying pipeline. This not only prevents dust from leaking out and polluting the workshop environment, but also eliminates the tedious manual secondary handling required after the dust is collected by the traditional dust collector, thus realizing closed-loop material production with no waste. (4) In this invention, a butterfly valve and a vibrating screen assembly are connected in series on the bottom discharge path of the main material collection tank. The main material and recycled residue collected through the dual pipelines fall smoothly into the vibrating screen under the quantitative control of the butterfly valve for online particle size separation and impurity removal. This effectively intercepts possible packaging bag debris or agglomerated powder, ensuring the forming quality of subsequent pipe processing. At the same time, the flexible connector between the discharge port and the vibrating screen effectively isolates the transmission of high-frequency vibration to the main tank and pipeline system, ensuring the lifespan and sealing safety of the entire machine structure.

[0015] In summary, the integrated device and application method for bagged material unpacking, filtration, and empty bag collection proposed in this invention breaks through the industry bottlenecks of traditional powder unpacking operations, which rely on manual labor, incomplete unloading, and dust pollution. This invention eliminates the risk of residual material waste and dust leakage, and realizes a fully automated closed loop from precise positioning and feeding of packaging bags, unpacking and unloading, to automatic peeling and discharge of empty bags. It provides a highly efficient and clean unmanned unpacking and feeding solution for pipe manufacturing and related powder processing industries. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an integrated device for breaking open bags, filtering, and collecting empty bags of bagged materials proposed in this invention. Figure 2 This is a three-dimensional sectional view of the internal compartment of an integrated device for bagged material breaking, filtering, and empty bag collection proposed in this invention. Figure 3 This is a plan view of the internal compartment of an integrated device for breaking open bags, filtering, and collecting empty bags for bagged materials, as proposed in this invention. Figure 4 This is a schematic diagram of the bag-breaking gripping mechanism of an integrated device for breaking, filtering, and collecting empty bags of bagged materials proposed in this invention. In the diagram, 1-main hopper, 2-conveyor belt, 3-lifting mechanism, 4-gripping claw, 5-transmission assembly, 6-bag cutting mechanism, 7-main material collection tank, 8-vibrating screen assembly, 9-first pipe, 10-second pipe, 11-pipeline switching valve, 12-fan assembly, 13-dust recovery assembly, 14-butterfly valve, 15-waste bag collection cylinder, 16-controller, 17-exhaust fan, 18-pulse valve, 19-synchronous belt guide rail mechanism, 20-knife holder. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. Example 1

[0019] refer to Figures 1-4 This embodiment provides an integrated device for bagged material breaking, filtering, and empty bag collection. Its overall structure is built on an external metal support frame and a main chamber 1. Each functional module is spatially arranged and mechanically connected around the main chamber 1 and its material flow path. This device is used to realize automatic feeding, positioning, gripping, bag breaking and unloading of packaging bags, negative pressure pneumatic conveying of bottom material and residual material, gas-solid separation and recovery of empty bags, in-situ purification of dust, and online particle size screening of the output material.

[0020] At the front-end feeding stage of the device, an automatic feeding robotic arm system is configured. This robotic arm system adopts an industrial multi-axis robotic arm with three-dimensional vision algorithm. The base of the robotic arm is fixed on the foundation on one side of the feeding station. Its end is equipped with a suction cup or flexible gripper. Through the three-dimensional vision sensor above, the robotic arm can automatically grab the packaging bags on the stack and move them to the starting end of the feeding mechanism.

[0021] After the packaging bags are placed in the feeding mechanism, they are conveyed to the feeding station of the main hopper 1 by the horizontally arranged conveyor belt 2. The conveyor belt 2 is tensioned by drive rollers at both ends and powered by a geared motor. A material detection sensor, which is a touch switch, is mounted on a bracket directly above the feeding station of the main hopper 1 along the conveyor belt 2. The sensor's sensing angle extends into the conveying space of the conveyor belt 2 to identify whether the packaging bag has reached the predetermined gripping position. Mechanical clearance is provided on the support surface of the conveyor belt 2 in either the horizontal or vertical direction. A lifting mechanism 3 is vertically installed directly below the conveyor belt 2. The lifting mechanism 3 uses a pneumatic lifting cylinder. The lower fixed seat of the cylinder is bolted to the frame beam below the conveyor belt 2. The piston rod of the cylinder is vertically upward, and a rectangular metal support plate is horizontally welded to the lifting end of the piston rod. This support plate is directly opposite the support surface of the conveyor belt 2 in planar projection. The feeding mechanism also includes a guide side plate, which is a single sheet metal bent piece fixed to the left side frame of the conveyor belt 2 along the conveying direction and extends along the conveying direction of the conveyor belt 2. The bottom edge of the guide side plate is close to the support surface of the conveyor belt 2, and its top height is higher than the support surface of the conveyor belt 2. The left guide side plate and the upper surface of the conveyor belt 2 cooperate to form a positioning surface for limiting the lateral displacement of the packaging bag to the left. If there is a positional deviation of the packaging bag during the conveying process, it will be corrected and straightened under the guiding reference of the left guide side plate. When the packaging bag moves with the conveyor belt 2 and touches the sensing mechanism of the touch switch, the internal contacts of the touch switch close and send a positioning signal to the controller 16. The motor of the conveyor belt 2 brakes and stops instantly. Then the cylinder solenoid valve of the lifting mechanism 3 is energized, and the high-pressure gas drives the piston rod to extend upward. The pallet passes through the gap of the conveyor belt 2 and lifts the packaging bag upward so that it meets the gripping component above.

[0022] The main chamber 1 is a sealed space for bag breaking and unloading. To meet the translational requirements of the internal bag breaking gripping mechanism, a longitudinal through hole is opened on the top plate of the main chamber 1 in the horizontal direction. To reduce the dust generated at the moment of bag breaking from drifting outward from the longitudinal through hole, dustproof brush assemblies are fixedly installed on both sides of the longitudinal through hole. The dustproof brush strips on both sides are fixed to the edge of the through hole by aluminum alloy pressure plates. The bristles extend towards the center line of the through hole, and their ends overlap each other and are dynamically squeezed on the side walls of the component passing through the hole. When the internal mechanism slides back and forth along the through hole, the dustproof brushes undergo elastic deformation, maintain contact sliding seal, prevent dust leakage, and maintain a micro-negative pressure exhaust environment inside the main chamber 1.

[0023] Inside and at the top of the main compartment 1, a bag-breaking gripping mechanism is provided. This mechanism consists of a gripping claw 4 at the bottom and a transmission assembly 5. The transmission assembly 5 includes a synchronous belt guide rail mechanism 19 and a related drive motor located at the top of the main compartment 1. The synchronous belt guide rail mechanism 19 includes a linear guide rail laid horizontally along the length of the main compartment 1 and a fixed base that is clamped on the guide rail slider and can slide back and forth along the guide rail. The synchronous belt drive motor is located on one side of the top of the main compartment 1 through a motor base. Its drive end is connected to an active synchronous belt pulley through a keyway. One end of a synchronous belt meshes with the active synchronous belt pulley, and the other end of the synchronous belt extends and connects to a driven synchronous belt pulley located on the other side of the top of the main compartment 1, forming a closed-loop traction system.

[0024] The transmission assembly 5 also includes a vertically arranged gripper mounting plate and a rotary drive motor. The upper end of the gripper mounting plate extends to the outside through a longitudinal elongated hole at the top of the main chamber 1. Its sidewall is rigidly connected to a fixed base on the synchronous belt guide mechanism 19 by bolts. The top of the fixed base is engaged with the lower half of the synchronous belt by a metal toothed pressure plate. The linear reciprocating motion of the synchronous belt is converted into the horizontal translation of the gripper mounting plate. The rotary drive motor is horizontally fixed on the flange surface at the upper end of the gripper mounting plate. Its drive end passes horizontally through a limiting hole machined at the upper part of the gripper mounting plate. A drive gear is provided on the protruding end by a set screw and a keyway. One end of a transmission chain is engaged with the drive gear, and the other end of the chain extends downward and connects to the driven gear below. A metal rotating rod is welded to the top of the gripper 4. The rod passes horizontally through the lower limit hole pre-set at the bottom of the gripper mounting plate. A bearing with a seat is embedded inside the lower limit hole. The middle shaft section of the rotating rod is locked by the inner ring of the bearing, forming a rotation support point. A driven gear is set and fixed at the end of the rotating rod after passing through the bearing. An array of stainless steel tips is fixed on the lower surface of the gripper 4. The transmission component 5 drives the synchronous belt through the synchronous belt drive motor, realizing the translational freedom of the gripper 4 in the horizontal direction; and drives the chain and rotating rod through the rotation drive motor, realizing the rotational freedom of the gripper 4 around the horizontal axis. When the touch switch is triggered and the lifting mechanism 3 lifts the packaging bag, the tips at the bottom of the gripper 4 pierce and penetrate the packaging bag to achieve suspension and fixation. Then the lifting cylinder falls back, the conveyor belt 2 resumes operation, and the gripper 4 moves horizontally with the packaging bag to perform bag breaking and tumbling.

[0025] At the bag-breaking station at the bottom of the main chamber 1, directly below the translating trajectory of the gripper 4, a bag-cutting mechanism 6 is installed. The bag-cutting mechanism 6 includes a vertically installed lifting drive and a metal blade holder 20 set on top of the lifting drive. The base of the lifting drive is fixed on the base frame, and the piston rod is vertically upward toward the inside of the main chamber 1. The blade holder 20 is designed with a cross-shaped structure or an X-shaped skeleton structure. Cutting blades are fully welded to the top edge of the skeleton. After the packaging bag is moved above the bag-breaking station by the transmission component 5, the lifting drive extends, driving the blade holder 20 to lift upward. The cutting blade pierces and cuts the bottom of the packaging bag. Then the blade retracts, the bottom of the packaging bag opens, and the material pours downward. At this time, the rotary drive motor starts, and drives the rotating rod through the chain to make the gripper 4 and the broken packaging bag tumble in a circular motion. Under the combined action of centrifugal force and gravity, the powder material stuck at the corner of the packaging bag is shaken off to the bottom of the main chamber 1, completing the unloading.

[0026] To transfer and separate the unloaded materials from the gas, the device is equipped with a negative pressure suction system consisting of a main material collection tank 7, a first pipeline 9, a second pipeline 10, a pipeline switching valve 11, and a blower assembly 12. The main material collection tank 7 is a stainless steel cyclone separator tank, independently located outside the main silo 1. It has an inlet flange machined in the middle of its side wall and an outlet flange machined at the bottom. The air inlet of the blower assembly 12 is sealed to the exhaust port at the top of the main material collection tank 7 via a rigid duct, and its outlet is discharged to the outside atmosphere. A negative pressure is created inside tank 7. One end of the first pipe 9 is connected to the material collection hopper at the bottom of the main hopper 1 via a flange. One end of the second pipe 10 is connected to the tail end opening at the end of the horizontal movement trajectory of the main hopper 1, which is the location where the gripper 4 discards empty bags. The other ends of the first pipe 9 and the second pipe 10 are connected to each other via a manifold near the feed inlet of the main material collection tank 7, and share the same feed inlet to connect to the main material collection tank 7. The pipeline switching valve 11 is located at the junction of the first pipe 9 and the second pipe 10 or at the... On the main pipeline of pipe 9, the on / off state of the air passage between the first pipe 9 and the second pipe 10 is switched. When the main material is unloaded, the pipeline switching valve 11 keeps the first pipe 9 in the open state, and the negative pressure suction airflow draws a large amount of powder from the bottom of the main hopper 1 into the main material collection tank 7 along the first pipe 9. When the gripper 4 moves the emptied packaging bag to the tail opening for disposal, the pipeline switching valve 11 is activated to close and isolate the air passage of the first pipe 9. At this time, the negative pressure suction airflow generated by the blower assembly 12 is concentrated in the second pipe 10 to generate suction. The force of the gripper 4 releases the empty bag, which is then sucked into the second pipe 10. A waste bag collection cylinder 15 is connected in series in the middle section of the second pipe 10. The waste bag collection cylinder 15 is equipped with a metal porous grid. Large-sized empty bags are intercepted and collected by the grid, while the residual powder attached to the empty bags is stripped by the airflow and penetrates the grid. It is then transported by the residual material recovery branch located downstream of the waste bag collection cylinder 15 along the airflow direction and merges with the first pipe 9 at the confluence fitting. Finally, it enters the main material collection tank 7, realizing the separation of waste bags and the recovery of residual materials.

[0027] The material entering the main material collection tank 7 needs to be filtered and screened during bottom discharge. A butterfly valve 14 and a vibrating screen assembly 8 are vertically connected in series along the material falling direction at the discharge port. The upper flange of the butterfly valve 14 is connected to the bottom discharge port of the main material collection tank 7 by bolts. During the negative pressure suction stage of the blower, the butterfly valve 14 remains closed to maintain airtightness. During discharge, the butterfly valve 14 opens, and the lower flange of the butterfly valve 14 is locked to the feed end of the vibrating screen assembly 8 below by a flexible connector made of polyurethane or high-strength canvas. The vibrating screen assembly 8 is equipped with a screen and an eccentric vibrating motor to separate and filter the falling powder by particle size, remove impurities or lumps. The flexible connector seals the material channel and uses its flexible deformation to isolate the high-frequency vibration generated by the vibrating screen assembly 8 from the transmission to the main material collection tank 7 and the negative pressure pipeline system.

[0028] Dust generated during the instant the bag is broken inside the main chamber 1 is purified in situ by the dust recovery assembly 13 at the top. The dust recovery assembly 13 mainly consists of a dust collection housing, an exhaust fan 17, a filter screen, and a pulse valve 18. The dust collection housing is an open-bottom box with a flange installed at the top opening of the main chamber 1, allowing the open opening to connect with the inner cavity of the main chamber 1. A filter screen is installed inside the dust collection housing, located upstream of the rising airflow path. The exhaust fan 17 is installed on the outer wall of the dust collection housing, downstream of the filter screen, with its air inlet connected to the clean air cavity separated by the filter screen. The pulse valve 18 is installed on the outer wall of the dust collection housing, with its air inlet connected to a compressed air source and its back-blowing end penetrating the housing and facing the downstream leeward side of the filter screen. During operation, the exhaust fan 17 generates suction, drawing dust-laden air in through the open opening, where the dust is trapped on the surface of the filter screen. According to the time logic, the pulse valve 18 releases high-pressure airflow to impact the filter screen in the opposite direction. The dust particles shaken off fall directly back to the bottom of the main chamber 1 through the open opening at the bottom under the action of gravity, and are then sucked away by the first pipe 9.

[0029] Mechanical drive motors, touch switches, pneumatic valves, etc., are all electrically connected to the input and output terminals of controller 16 via wires. The logic program of controller 16 realizes automatic linkage from visual robotic arm feeding, touch stop, lifting mechanism 3 gripping, translational bag cutting, rotation and tumbling, valve air path switching, bag suction and residual material removal to pulse dust removal. To increase production capacity, the main chamber 1 can be expanded into a dual-chamber structure with a first sub-chamber and a second sub-chamber arranged in parallel. At this time, the bag breaking gripping mechanism, the bag cutting mechanism 6, and the lifting mechanism 3 at the feeding end are each equipped with two independent kits. The first sub-chamber and the second sub-chamber share the same bottom conveyor belt 2 for alternating feeding. The discharge hoppers at the bottom of the first sub-chamber and the second sub-chamber are connected to one end of the first pipe 9 through a pipe tee, thereby sharing the same negative pressure suction airflow generated by the fan assembly 12, improving the utilization efficiency of the negative pressure air source and reducing overall energy consumption, realizing parallel continuous processing of the two chambers.

[0030] It should be noted that, in order to facilitate the collection of the unloaded powder raw materials, the bottom structure of the main chamber 1 is designed as a funnel. This structure allows the material poured out after the packaging bag is cut to naturally gather by gravity and smoothly slide down to the discharge port below, thereby efficiently entering the first pipe 9.

[0031] Secondly, the electrical control components of the entire device, including the specific circuit design, sensor signal acquisition, and PLC program control logic, all adopt existing mature technologies in this field. Once those skilled in the art understand the action sequence and airflow switching principle of the aforementioned mechanical components, they can achieve the corresponding coordinated control through conventional programming and wiring. Therefore, this article will not elaborate on the specific electrical control details. Example 2

[0032] Based on the integrated device for bagged material breaking, filtering, and empty bag collection described in Example 1, this embodiment provides its specific workflow, the specific steps of which are as follows: S1. Feeding, positioning, and gripping: The automatic feeding robotic arm system identifies the coordinates of the packaging bags on the stack using a 3D vision sensor, grips them, and moves them horizontally to the starting end of the conveyor belt 2. The conveyor belt 2 starts conveying, and during the conveying process, the guide side plate on the left side limits and corrects the packaging bags laterally. When the packaging bag moves and touches the touch switch, which acts as a material detection sensor, the touch switch sends a signal to the controller 16, and the controller 16 controls the conveyor belt 2 to stop. Subsequently, the lifting mechanism 3 moves, and the pallet passes through the gap of the conveyor belt 2 to lift the packaging bag upward, so that the top of the packaging bag meets the gripping claw 4. The pointed tip at the bottom of the gripping claw 4 pierces and fixes the packaging bag. After the gripping is completed, the lifting mechanism 3 descends and resets, and the conveyor belt 2 resumes operation.

[0033] S2. Bag breaking and tumbling: The synchronous belt guide mechanism 19 in the transmission assembly 5 drives the gripper 4 to move the packaging bag horizontally to the bag breaking station above the funnel-shaped bottom of the main chamber 1; the lifting drive of the bag cutting mechanism 6 extends, driving the knife holder 20 to lift upward, and the cutting blade on the knife holder 20 pierces and cuts the bottom of the packaging bag, and then retracts the knife; the bottom of the packaging bag opens, and the material pours downward into the bottom of the main chamber 1; at the same time, the rotary drive motor in the transmission assembly 5 drives the rotating rod through the chain, so that the gripper 4 and the broken packaging bag perform a circumferential tumbling motion, shaking the powder material at the corners of the packaging bag to the bottom of the main chamber 1.

[0034] S3. Main air path conveying: During the bag breaking and unloading process, the controller 16 controls the pipeline switching valve 11 to keep the first pipeline 9 in the conducting state; the negative pressure suction airflow generated by the fan assembly 12 acts on the bottom of the main chamber 1 through the first pipeline 9, sucking up the material falling to the bottom and conveying it to the main material collection tank 7.

[0035] S4. After unloading, the transmission component 5 drives the gripper 4 to move the emptied packaging bag to the tail opening of the main chamber 1; the controller 16 controls the pipeline switching valve 11 to close the air path of the first pipeline 9, so that the negative pressure suction airflow generated by the blower component 12 is concentrated in the second pipeline 10; the gripper 4 releases, and the empty bag is sucked into the second pipeline 10; when the empty bag passes through the waste bag collection cylinder 15, it is intercepted and collected by the internal grid, while the residual powder attached to the empty bag penetrates the grid under the stripping of the airflow, enters the manifold through the residual material recycling branch, and finally enters the main material collection tank 7 with the airflow.

[0036] S5. Synchronous dust removal and filtration screening: During the above operation, the exhaust fan 17 of the dust recovery component 13 works synchronously to suck up the dust raised in the main chamber 1 and intercept it on the filter screen; the pulse valve 18 releases high-pressure airflow for backflushing according to the preset time program, so that the dust on the filter screen falls back to the bottom of the main chamber 1 and re-enters the first pipe 9; the material entering the main material collection tank 7 is discharged in the stage by the butterfly valve 14 opened by the controller 16, falling into the vibrating screen component 8 below for particle size separation and filtration and output.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A bagged material bag breaking and filtering and empty bag collecting integrated device, characterized in that, include: Main warehouse body; The feeding mechanism has its output end extended to the feeding station of the main hopper. The feeding mechanism includes a conveyor belt, a material detection sensor set on the conveyor belt, and a lifting mechanism set below the conveyor belt. A gap is opened on the support surface of the conveyor belt, and the lifting end of the lifting mechanism is directly opposite the gap. A bag-breaking gripping mechanism is installed inside the main compartment and includes gripping claws and a transmission assembly. The surface of the gripping claws is provided with arrayed pointed tips. The gripping claws are connected to the transmission assembly, which has translational freedom in the horizontal direction and rotational freedom about the horizontal axis. The gripping claws in the initial gripping position are located in the corresponding area above the lifting mechanism. A bag-cutting mechanism is provided at the bag-breaking station at the bottom of the main compartment. The bag-cutting mechanism includes a lifting drive and a knife holder provided at the top of the lifting drive. The knife holder is located below the horizontal translational movement trajectory of the gripper. The main material collection tank is located outside the main silo. The main material collection tank has an inlet in the middle of its side wall and an outlet at its bottom. A vibrating screen assembly for particle size separation and filtration of the material is provided at the outlet. The first pipe has one end connected to the bottom of the main compartment; The second pipe has one end connected to the tail end of the main chamber; the other end of the first pipe and the other end of the second pipe merge and connect to the same feed inlet. A pipeline switching valve is installed at the junction of the first pipeline and the second pipeline or on the first pipeline, and is used to switch the on / off state of the gas passage between the first pipeline and the second pipeline. The fan assembly has its air inlet connected to the top of the main material collection tank to create a negative pressure suction airflow in the main material collection tank, the first pipe and the second pipe; The dust collection component is located on the top of the main chamber.

2. The bagged material break-bag filtration and empty-bag collection integrated device according to claim 1, characterized in that, The discharge port is provided with a butterfly valve and the vibrating screen assembly in sequence along the material falling direction, and the discharge port and the feed end of the vibrating screen assembly are connected by a flexible connector. The butterfly valve is located between the bottom of the main material collection tank and the flexible connector, and is used to control the opening and closing of the material entering the vibrating screen assembly.

3. The bagged material break-bag filtration and empty-bag collection integrated device according to claim 1, characterized in that, A waste bag collection cylinder is connected in series on the second pipeline. The section of the second pipeline located downstream of the waste bag collection cylinder along the airflow direction serves as a residual material recycling branch and merges with the other end of the first pipeline.

4. The bagged material break-bag filtration and empty-bag collection integrated apparatus according to claim 1, characterized by, The device also includes a controller; The material detection sensor is electrically connected to the input terminal of the controller; The output of the controller is electrically connected to the drive motor of the conveyor belt, the drive component of the lifting mechanism, the control terminal of the pipeline switching valve, and the transmission component of the bag-breaking gripping mechanism.

5. The bagged material break-bag filtration and empty-bag collection integrated apparatus according to claim 1, characterized by, The dust recovery assembly includes a dust collection housing, an exhaust fan, a filter screen, and a pulse valve; The dust collection housing is installed on the top of the main chamber, and the bottom of the dust collection housing is provided with an open opening, which is directly connected to the inner cavity of the main chamber. The filter screen is disposed inside the dust collection housing and located upstream of the airflow path, and the exhaust fan is disposed downstream of the filter screen and its air inlet is connected to the inner cavity of the dust collection housing. The pulse valve is installed on the dust collection housing with its backflush end facing the filter screen, and the air inlet end of the pulse valve is used to connect to the pulse air source.

6. The integrated device for bagged material breaking, filtering, and empty bag collection according to claim 1, characterized in that, The transmission assembly includes a synchronous belt drive motor and a synchronous belt guide rail mechanism that cooperates with the synchronous belt drive motor. The gripper is slidably suspended and connected to the synchronous belt guide rail mechanism.

7. The bagged material break-bag filtration and empty-bag collection integrated apparatus according to claim 1, characterized by, The blade holder of the bag cutting mechanism has a cross-shaped or X-shaped structure, and the top edge of the blade holder is provided with a cutting blade.

8. The bagged material break-bag filtration and empty-bag collection integrated apparatus according to claim 1, characterized by, The main compartment has a first sub-compartment and a second sub-compartment arranged in parallel; The bag-breaking gripping mechanism, the bag-cutting mechanism, and the lifting mechanism are each provided in twos, and are arranged independently in conjunction with the first sub-compartment and the second sub-compartment respectively; The first sub-compartment and the second sub-compartment share the same conveyor belt; The bottom of the first sub-compartment and the bottom of the second sub-compartment are both connected to one end of the first pipe, sharing the negative pressure suction airflow generated by the fan assembly.

9. The bagged material break-bag filtration and empty-bag collection integrated apparatus according to claim 1, characterized by, The feeding mechanism also includes a guide side plate, which is disposed on at least one side of the conveyor belt and extends along the conveying direction of the conveyor belt. A guide channel for limiting the lateral displacement of the packaging bag is formed between the guide side plate and the conveyor belt.

10. A method of using the bagged material bag-broken filtration and empty bag collection integrated device according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Feeding, positioning and gripping: The packaging bag is conveyed by the conveyor belt. When it touches the material detection sensor, the conveyor belt stops running. The lifting mechanism rises from the gap of the conveyor belt support surface and lifts the packaging bag to fit against the bag-breaking gripping mechanism, so that the pointed tip on the gripping claw inserts into and fixes the packaging bag. Then the lifting mechanism lowers and resets, and the conveyor belt resumes running. S2. Bag breaking and tumbling: The transmission component drives the gripper to move the packaging bag horizontally to the bag breaking station at the bottom of the main compartment. The cutter of the bag cutting mechanism rises and cuts the bottom of the packaging bag. After cutting, the transmission component drives the gripper to perform a circular rotation motion around the horizontal axis to tumble and shake the material inside the packaging bag to the bottom of the main compartment. S3. Main air path conveying: The pipeline switching valve opens the first pipeline. The material falling into the bottom of the main silo is drawn and transported to the main material collection tank through the first pipeline under the negative pressure suction airflow generated by the fan assembly. S4. Air path switching and empty bag separation and recycling: The gripper moves the empty main material packaging bag to the tail end of the main chamber. The pipeline switching valve closes the air path of the first pipeline to prevent air leakage and the negative pressure suction airflow from concentrating in the second pipeline. The packaging bag is sucked into the second pipeline, where the waste empty bag is discharged into the waste bag collection cylinder. The residual material attached to the empty bag is separated by airflow and then transported to the main material collection tank by the residual material recycling branch. S5. Synchronous dust removal and filtration screening: During the operation of the device, the dust recovery component simultaneously performs negative pressure adsorption on the dust raised in the main chamber, and uses a pulse valve to periodically backflush the dust back to the bottom of the main chamber for re-transportation; at the same time, the material entering the main material collection tank falls into the vibrating screen component through the discharge port for particle size separation and filtration.

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