Centralized granular material supply system

Abstract

The utility model relates to the technical field of large volume parenteral feeding, and discloses a centralized granular material feeding system which comprises a granular material temporary storage tank, an unstacking device, a roller conveying belt, a dust-free unpacking device and a pump station, the granular material temporary storage tank is communicated with a feeding hopper of an injection molding machine through a pipeline, the unstacking device grabs granular material bags and places the granular material bags on the roller conveying belt, and the dust-free unpacking device is communicated with the pump station. The granular material bags enter the dust-free unpacking equipment along the roller conveying belt, the dust-free unpacking equipment conducts bag breaking operation on the granular material bags and collects granular materials in the granular material bags, the dust-free unpacking equipment is communicated with the granular material temporary storage tank through a pipeline, the pump station comprises a vacuum pipeline communicated with the vacuum pump, and the vacuum pipeline is communicated with the granular material temporary storage tank and a feeding hopper of the injection molding machine. Continuous feeding is achieved through vacuum pumping feeding, operation such as disinfection and bag breaking is carried out on granule bags through automatic equipment, and the feeding process is controlled in a full-automatic mode. The granular material bag is broken in the closed space, so that environmental pollution caused by dust is completely eradicated, and the environment and personnel are prevented from polluting materials.

Description

Technical Field

[0001] The utility model relates to the technical field of large-volume infusion feeding, in particular to a centralized granular material feeding system. Background Art

[0002] The large-scale infusion industry often uses granular raw materials during the dispensing process. As the granular raw materials in the temporary storage bin are continuously consumed during the dispensing process, workers at the feeding station are required to continuously unbundle and pour the granular raw materials into the temporary storage bin for use in subsequent processes. The granular raw materials in the temporary storage bin are slowly fed into the hopper above the injection molding machine for use based on the rate of demand for raw materials in subsequent processes.

[0003] During the above-mentioned feeding process, workers at the feeding station need to unpack and open the pellet bags and pour the pellets into the pellet temporary storage bin. The workers have a lot of workload and high labor intensity. In addition, due to the large amount of dust on the outer surface of the pellet bags, a large amount of dust that is harmful to the human body and pollutes the environment will be generated during the manual operation. More importantly, the above-mentioned feeding operation cannot be carried out in a closed environment. There is a hidden danger of contamination of the pellet raw materials, which leads to unstable product reliability, increased product quality and safety risks, and inability to guarantee product quality. Therefore, this feeding method needs to be improved. Utility Model Content

[0004] In response to the existing problems of feeding and feeding methods, which are characterized by high workload and labor intensity, inability to handle generated dust, and potential contamination of the pelletized raw materials, this utility model aims to provide a centralized pellet feeding system. This system utilizes vacuum centralized feeding to achieve uninterrupted and continuous feeding, and utilizes automated equipment to disinfect and break the pellet bags, making the feeding process fully automated and eliminating the need for human intervention. Breaking the pellet bags within a confined space eliminates environmental pollution caused by dust, improves the working environment, and prevents environmental and personnel contamination of the materials.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is:

[0006] A centralized pellet feeding system is used to feed pellets in a pellet bag into the upper hopper of an injection molding machine, comprising a pellet temporary storage tank, which is connected to the upper hopper of the injection molding machine through a pipeline, and further comprising a destacking device, a roller conveyor belt, a dust-free unpacking device and a pump station controlled by a controller. The destacking device grabs the pellet bag and places the pellet bag on the roller conveyor belt, and the pellet bag enters the dust-free unpacking device along the roller conveyor belt. The dust-free unpacking device breaks the pellet bag and collects the pellets in the pellet bag. The dust-free unpacking device is connected to the pellet temporary storage tank through a pipeline, and the pump station includes a vacuum pipeline connected to a vacuum pump, and the vacuum pipeline is respectively connected to the pellet temporary storage tank and the upper hopper of the injection molding machine.

[0007] The utility model is further configured as follows: the pump station also includes a vacuum buffer tank, the vacuum pump is connected to the vacuum buffer tank, and the vacuum buffer tank is connected to the pellet temporary storage tank and the injection molding machine hopper respectively through different vacuum pipelines.

[0008] The utility model is further configured as follows: the pump station also includes a dust collector, and the dust collector is arranged on the vacuum pipeline between the vacuum buffer tank and the granule temporary storage tank and between the vacuum buffer tank and the upper hopper of the injection molding machine.

[0009] The utility model is further configured such that: the dust-free unpacking equipment is connected to an exhaust system for absorbing dust.

[0010] The utility model is further configured to include an air shower disinfection device, which is located upstream of the dust-free unpacking device. The granular material packages first enter the air shower disinfection device along the roller conveyor belt and then enter the dust-free unpacking device. The air shower disinfection device is used to clean and disinfect the granular material packages.

[0011] The utility model is further configured such that: the air shower disinfection equipment is connected to an exhaust system for absorbing dust.

[0012] The utility model is further configured as follows: a weighing device is provided on the roller conveyor belt, the weighing device is used to weigh the weight of the granular material packages on the roller conveyor belt, and the weighing device removes the granular material packages whose weight exceeds the error range.

[0013] In summary, the beneficial effects achieved by the present invention are as follows:

[0014] (1) By using automated equipment such as destacking equipment, roller conveyor belts and dust-free unpacking equipment to transport and break the pellet bags, and sucking the pellets into the pellet storage tank by vacuum pumping, the feeding process is fully automated, eliminating the need for manual operation and significantly reducing the labor intensity of workers;

[0015] (2) The pellet bags are disinfected by air shower disinfection equipment before breaking, and the bag breaking operation is carried out inside the dust-free unpacking equipment, which effectively avoids the contamination of the pellet raw materials by the external environment and is conducive to ensuring the quality of the product;

[0016] (3) The air shower disinfection equipment for cleaning the granular material bags and the dust-free unpacking equipment for breaking the granular material bags are both connected to the exhaust system for absorbing dust, so that the dust generated during the cleaning process and the bag breaking process can be promptly extracted and centralized for treatment to prevent the dust from polluting the human body and the environment;

[0017] (4) The pump station provides vacuum for the pellet storage tank and the injection molding machine hopper, respectively, so that there is sufficient vacuum in the pellet storage tank and the injection molding machine hopper to pump the pellets to the target location. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the specification. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the structure of the centralized pellet feeding system;

[0020] Figure 2 This is a structural diagram of the system from destacking equipment to dust-free unpacking equipment in the centralized pellet feeding system;

[0021] Figure 3 This is a schematic diagram of the structure from the pump station to the injection molding machine hopper in the centralized pellet feeding system.

[0022] In the figure: 1. Depalletizing equipment; 2. Granular material bag; 3. Roller conveyor belt; 31. Weighing device; 4. Air shower disinfection equipment; 5. Dust-free unpacking equipment; 6. Pump station; 61. Vacuum pump; 62. Vacuum buffer tank; 63. Dust collector; 64. Vacuum pipeline; 7. Granular material temporary storage tank; 8. Injection molding machine hopper. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "up", "down", "inside", "outside", "bottom", etc. used in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0024] As attached Figure 1-3As shown, a centralized pellet feeding system includes a controller-controlled depalletizing device 1, a roller conveyor belt 3, an air shower sterilizing device 4, a dust-free unpacking device 5, a pump station 6, a pellet temporary storage tank 7, and an injection molding machine hopper 8. The controller can be any common industrial controller in the prior art.

[0025] The granular raw materials are all stored in granular bags 2. In actual production, the granular bags 2 are transported and stacked in a predetermined area to form granular bag stacks. The destacking device 1 grabs the granular bag 2 and places the granular bag 2 on the roller conveyor belt 3.

[0026] The depalletizing device 1 uses a 3D vision imaging robot in the prior art, which can achieve precise positioning and grab each bag of granular material 2 and place it on the roller conveyor belt 3 through a suction cup.

[0027] The roller conveyor belt 3 conveys the pellet bag 2 to the inside of the air shower sterilization equipment 4 for cleaning and sterilization.

[0028] A weighing device 31 is installed on the roller conveyor 3. This device measures the weight of each pellet bag 2 on the roller conveyor 3 online. If a pellet bag 2's weight exceeds the tolerance, the weighing device 31 issues an alarm and automatically removes it. Only pellet bags 2 within the tolerance range are allowed to enter the air shower sterilizer 4. Both the roller conveyor 3 and the weighing device 31 are common in the prior art and will not be described in detail in this utility model.

[0029] The air shower disinfection equipment 4 and the dust-free unpacking equipment 5 are also existing technologies. The air shower disinfection equipment 4 is located upstream of the dust-free unpacking equipment 5. The pellet package 2 first enters the air shower disinfection equipment 4 along the roller conveyor belt 3 and then enters the dust-free unpacking equipment 5.

[0030] The air shower disinfection device 4 is equipped with a roller brush to thoroughly remove dust from the outer surface of the pellet bag 2. Since the air shower disinfection device 4 is connected to an exhaust system for collecting dust, dust generated during the cleaning process can be promptly discharged through the exhaust system, preventing dust pollution to humans and the environment. The exhaust system is a device in the prior art that can be externally connected to the feeding system of the present invention.

[0031] After the granule bag 2 is dust-cleaned, it is sterilized by ultraviolet light in the air shower disinfection device 4, and the number of microorganisms on the surface of the granule bag 2 is reduced to less than 50 CFU (CFU is a colony forming unit, a unit used in microbiology to estimate the number of living bacteria or fungi in a sample).

[0032] The cleaned and disinfected granular package 2 is conveyed into the dust-free unpacking device 5. A laminar flow hood is provided inside the dust-free unpacking device 5. The dust-free unpacking device 5 automatically identifies the batch number of the granular package 2 entering the laminar flow hood, distinguishes them, and grabs the granular package 2 and places them into the corresponding bag breaking bin. A bag breaking knife holder is provided in the bag breaking bin to perform the bag breaking operation on the granular package 2. Since the dust-free unpacking device 5 is connected to the exhaust system for absorbing dust, the dust generated during the bag breaking operation on the granular package 2 can be discharged in time through the exhaust system to prevent the dust from polluting the human body and the environment. After the granular package 2 is scratched, the dust-free unpacking device 5 will also shake the bag to ensure that all the granules in the granular package 2 are poured out to collect all the granules in the granular package 2.

[0033] The pump station 6 includes a vacuum pump 61 , a vacuum buffer tank 62 , a dust collector 63 and a vacuum pipeline 64 .

[0034] The vacuum pump 61 is connected to the vacuum buffer tank 62 through a vacuum pipeline 64, and the vacuum buffer tank 62 is connected to the pellet storage tank 7 and the injection molding machine hopper 8 through two independent vacuum pipelines 64. In addition, a dust collector 63 is provided on the vacuum pipeline 64 between the vacuum buffer tank 62 and the pellet storage tank 7 and on the vacuum pipeline 64 between the vacuum buffer tank 62 and the injection molding machine hopper 8.

[0035] In this embodiment, the vacuum pump 61 and the dust collector 63 are both existing technologies. Six vacuum pumps 61 are installed in the pump station 6. The pumping speed of a single vacuum pump 61 is 244 cubic meters per hour, the power is 5.5 kW, and the six vacuum pumps 61 are in a state of 5 in use and 1 in standby. The dust collector 63 uses a cyclone dust collector, and a dust collection bucket is installed below the dust collector 63. The volume of the vacuum buffer tank 62 is 2 cubic meters, and the vacuum pipeline 64 is a 304 stainless steel pipe with a diameter of 108 mm. A control valve is provided on the vacuum pipeline 64 between the dust collector 63 and the vacuum buffer tank 62 to facilitate adjustment of the vacuum level in the pellet storage tank 7 and the injection molding machine hopper 8.

[0036] The dust-free unpacking equipment 5 is connected to the temporary pellet storage tank 7 via a pipeline. After the pump station 6 provides the required vacuum level for the temporary pellet storage tank 7, the pellets in the dust-free unpacking equipment 5 are pumped along the raw material conveying pipeline into the temporary pellet storage tank 7, thereby automatically completing the loading process. The pump station 6 also provides the required vacuum level for the injection molding machine's hopper 8. The temporary pellet storage tank 7 is connected to the injection molding machine's hopper 8 via the raw material conveying pipeline, and the pellets in the temporary pellet storage tank 7 can be pumped into the injection molding machine's hopper 8.

[0037] Both the pellet storage tank 7 and the injection molding machine's upper hopper 8 are existing equipment. The pellet storage tank 7 is equipped with an ionized air purge and dust filtration device. Dust is removed through a pipe by the exhaust system and then collected and processed. Upon reaching the injection molding machine's upper hopper 8, the pellets are weighed and metal-detected to remove metal impurities before entering the injection molding machine's upper hopper 8 for subsequent processing.

[0038] The implementation principle of the above embodiment is:

[0039] When the centralized pellet feeding system of the present invention is in operation, a controller powers on the destacking device 1, roller conveyor belt 3, air shower disinfection device 4, dust-free unpacking device 5, and pump station 6. The destacking device 1 grabs pellet packages 2 and places them on the roller conveyor belt 3. The roller conveyor belt 3 weighs the pellet packages 2 online and removes unqualified pellet packages. Qualified pellet packages 2 flow along the roller conveyor belt 3, first into the air shower disinfection device 4 and then into the dust-free unpacking device 5. The air shower disinfection device 4 thoroughly removes dust and sterilizes the exterior of the pellet packages 2 with ultraviolet light. The dust-free unpacking device 5 then opens the pellet packages 2 and collects all the pellets within. The pump station 6 provides the required vacuum for the pellet storage tank 7 and the injection molding machine hopper 8. The pellet raw materials in the dust-free unpacking equipment 5 are pumped into the pellet storage tank 7 along the raw material conveying pipeline. The pellet raw materials in the pellet storage tank 7 are then pumped into the injection molding machine hopper 8 according to the demand for pellets in subsequent processes. The dust generated during the cleaning and bag breaking of the pellet bags 2, as well as the dust generated before the pellets enter the pellet storage tank 7 and the injection molding machine hopper 8, are promptly extracted and centrally processed by the exhaust system, thereby effectively preventing dust from polluting the human body and the environment.

[0040] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Clearly, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, to the extent such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to encompass such changes and modifications.

Claims

1. A centralized pellet feeding system for feeding pellets from a pellet bag (2) into an upper hopper (8) of an injection molding machine, comprising a pellet temporary storage tank (7), wherein the pellet temporary storage tank (7) is connected to the upper hopper (8) of the injection molding machine via a pipeline, and is characterized in that: The invention also includes a destacking device (1), a roller conveyor belt (3), a dust-free unpacking device (5) and a pump station (6) controlled by a controller. The destacking device (1) grabs the pellet bag (2) and places the pellet bag (2) on the roller conveyor belt (3). The pellet bag (2) enters the dust-free unpacking device (5) along the roller conveyor belt (3). The dust-free unpacking device (5) performs a bag-breaking operation on the pellet bag (2) and collects the pellets in the pellet bag (2). The dust-free unpacking device (5) is connected to the pellet temporary storage tank (7) through a pipeline. The pump station (6) includes a vacuum pipeline (64) connected to the vacuum pump (61). The vacuum pipeline (64) is respectively connected to the pellet temporary storage tank (7) and the injection molding machine upper hopper (8).

2. The centralized pellet feeding system according to claim 1, characterized in that: The pump station (6) further comprises a vacuum buffer tank (62), the vacuum pump (61) is in communication with the vacuum buffer tank (62), and the vacuum buffer tank (62) is in communication with the pellet temporary storage tank (7) and the injection molding machine upper hopper (8) via different vacuum pipelines (64).

3. The centralized pellet feeding system according to claim 2, characterized in that: The pump station (6) further includes a dust collector (63), which is arranged on a vacuum pipeline (64) between the vacuum buffer tank (62) and the pellet temporary storage tank (7) and between the vacuum buffer tank (62) and the injection molding machine upper hopper (8).

4. The centralized pellet feeding system according to claim 1, characterized in that: The dust-free unpacking equipment (5) is connected to an exhaust system for sucking dust.

5. The centralized pellet feeding system according to claim 1, characterized in that: It also includes an air shower disinfection device (4), which is located upstream of the dust-free unpacking device (5). The pellet bag (2) first enters the air shower disinfection device (4) along the roller conveyor belt (3) and then enters the dust-free unpacking device (5). The air shower disinfection device (4) is used to clean and disinfect the pellet bag (2).

6. The centralized pellet feeding system according to claim 5, characterized in that: The air shower disinfection equipment (4) is connected to an exhaust system for absorbing dust.

7. The centralized pellet feeding system according to claim 1, characterized in that: A weighing device (31) is provided on the roller conveyor belt (3), and the weighing device (31) is used to weigh the weight of the pellet bags (2) located on the roller conveyor belt (3). The weighing device (31) removes the pellet bags (2) whose weight exceeds an error range.

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