A fully enclosed gas-protected automatic unpacking system and its control method

Abstract

This invention relates to the field of unpacking equipment technology, specifically disclosing a fully enclosed gas-protected automatic unpacking system and its control method. The unpacking system includes a control system and, electrically connected to the control system, an air replacement chamber, an unpacking device, a sealing assembly, a conveying assembly, a collection mechanism, a comprehensive gas detection device, and a dust removal component. The air replacement chamber is sealed by the sealing assembly. One side of the unpacking device is connected to the air replacement chamber. Dust removal components and a collection mechanism are respectively installed at the upper and lower ends of the unpacking device. The comprehensive gas detection device is installed within the air replacement chamber, the unpacking device, and the collection mechanism. This invention achieves automatic material conveying through the conveying assembly, eliminating manual intervention. The sealing assembly ensures no dust leakage inside the equipment and isolation from the outside air. The unpacking device separates the material packaging from the material and collects it in the conveying pipeline, ultimately achieving unmanned automatic unpacking and providing effective sealing protection.

Description

Technical Field

[0001] This invention belongs to the technical field of unpacking equipment, and more specifically, relates to a fully enclosed gas-protected automatic unpacking system and a control method for the fully enclosed gas-protected automatic unpacking system. Background Technology

[0002] With societal progress and improved living standards, the pharmaceutical, food, and chemical industries have developed accordingly. In the processing of pharmaceutical, food, and chemical products, powdered raw materials need to be fed into production lines. These workshops are strictly dust explosion hazard areas, placing high demands on the equipment used for feeding raw materials. Currently, during the feeding process, powder can easily form an explosive dust environment inside the feeding equipment, where combustible dust mixes with air. This environment often poses significant safety risks. Therefore, in handling equipment for feeding flammable powders, in addition to necessary electrical explosion-proof requirements, certain safety risks still exist. Summary of the Invention

[0003] The purpose of this invention is to provide a fully enclosed gas-protected automatic unpacking system and a control method for the fully enclosed gas-protected automatic unpacking system, in order to solve the problem mentioned in the background art of forming an explosive dust environment inside the feeding equipment during the feeding process of combustible dust.

[0004] As a first aspect of the present invention, a fully enclosed gas-protected automatic unpacking system is provided, comprising a control system and an air replacement box, an unpacking device, a sealing assembly, a conveying assembly, a collecting mechanism, a gas comprehensive detection device, and a dust removal component, all electrically connected to the control system. The air replacement box is sealed by the sealing assembly. One side of the unpacking device is connected to the air replacement box. The dust removal component and the collecting mechanism are respectively provided at the upper and lower ends of the unpacking device. The gas comprehensive detection device is respectively disposed in the air replacement box, the unpacking device, and the collecting mechanism.

[0005] The conveying assembly is used to transport the material package from its initial position through the air displacement box to the unpacking device.

[0006] The unpacking device is used to break the material package; wherein, when the material package is cut open, the material inside the material package falls into the collection mechanism;

[0007] The collection mechanism is used to collect materials falling from the unpacking device;

[0008] The gas comprehensive detection device is used to detect the gas pressure inside the air replacement box and the unpacking device, as well as the gas concentration inside the air replacement box, the unpacking device, and the collection mechanism.

[0009] The dust removal component is used to backflush the dust inside the unpacking device to control the dust content inside the unpacking device.

[0010] As a further improvement of the present invention, the air replacement chamber includes a vacuum pump and a gas path control unit. The vacuum pump is used to extract the air inside the air replacement chamber, and the gas path control unit is used to introduce external protective gas into the air replacement chamber.

[0011] As a further improvement of the present invention, the sealing assembly includes a front sealing mechanism, a front driving mechanism, a rear sealing mechanism, and a rear driving mechanism. The front sealing mechanism and the front driving mechanism are disposed at the front of the air replacement chamber, and the rear sealing mechanism and the rear driving mechanism are disposed at the rear of the air replacement chamber. Both the front driving mechanism and the rear driving mechanism are electrically connected to the control system. The front driving mechanism is used to drive the front sealing mechanism to move, and the rear driving mechanism is used to drive the rear sealing mechanism to move. After the front sealing mechanism and the rear sealing mechanism are in place, they can seal the air replacement chamber.

[0012] As a further improvement of the present invention, both the front drive mechanism and the rear drive mechanism are provided with position sensors. The position sensors are electrically connected to the control system. The position sensors are used to detect whether the front drive mechanism and the rear drive mechanism are driven into position and to feed back the detection data to the control system.

[0013] As a further improvement of the present invention, the gas integrated detection device includes a differential pressure detection unit and a gas concentration detection unit. The differential pressure detection unit is disposed in the air replacement box and the unpacking device, and the gas concentration detection unit is disposed in the air replacement box, the unpacking device and the collection mechanism, respectively.

[0014] The differential pressure detection unit includes a differential pressure sensor, which is used to detect the difference between the gas pressure inside the air replacement chamber and the gas pressure inside the unpacking device;

[0015] The gas concentration detection unit includes an oxygen sensor, which is used to detect the oxygen concentration inside the air replacement box, unpacking device, and collection mechanism.

[0016] As a further improvement of the present invention, the collecting mechanism includes a material collection hopper and a material fluidization device. The material collection hopper is sealed to the bottom of the unpacking device. The material collection hopper is used to collect materials falling from the unpacking device. The material fluidization device is fixed on the material collection hopper and is electrically connected to the control system. The control system can control the fluidization of the material in the material collection hopper through the material fluidization device.

[0017] As a further improvement of the present invention, the collection mechanism further includes a material discharge control device electrically connected to the control system, the bottom end of the material discharge collection hopper is connected to a material conveying pipe, and the material discharge control device is used to control the material in the material discharge collection hopper to be discharged through the material conveying pipe.

[0018] As a further improvement of the present invention, the collecting mechanism further includes an active air replenishment device electrically connected to the control system, the active air replenishment device being used to control the conveying pressure inside the material conveying pipeline.

[0019] As a further improvement of the present invention, the conveying assembly includes a drive mechanism and a position sensor. Both the drive mechanism and the position sensor are electrically connected to the control system. The drive mechanism is used to drive the belt conveyor component to move, thereby moving the material bag on the belt conveyor component. The position sensor is used to detect the movement position of the material bag in the air displacement box.

[0020] As a second aspect of the present invention, a control method for a fully enclosed gas-protected automatic unpacking system is provided, comprising the following steps:

[0021] Step S1: After the internal environment of the unpacking device passes the self-inspection, the control system controls the front drive mechanism to drive the front sealing mechanism to open the inlet of the air replacement box. Then the control system controls the conveying component to transport the material bag through the inlet into the air replacement box.

[0022] Step S2: After the material bag enters the air replacement chamber, the position sensor detects the current position data X0 of the material bag and transmits the current position data X0 of the material bag to the control system;

[0023] Step S3: The control system compares the current position data X0 of the material bag with the reference position data Xr. When the difference between the current position data X0 of the material bag and the reference position data Xr is less than or equal to the first preset value Lmin, that is, |Xr-X0|≤Lmin, it is considered that the material bag has moved into place in the air replacement box.

[0024] Step S4: After the material bag moves into position in the air replacement box, the control system controls the front drive mechanism to drive the front sealing mechanism to move to close the inlet of the air replacement box, and determines whether the inlet is completely closed based on the detection data of the position sensor. When the inlet is completely closed, a completely closed chamber is formed in the air replacement box.

[0025] Step S5: The control system controls the vacuum pump in the air replacement chamber to start working and extract the air from the sealed air replacement chamber;

[0026] Step S6: The differential pressure sensor detects the difference ΔP0 between the gas pressure inside the air replacement chamber and the gas pressure inside the unpacking device in real time. When the difference ΔP0 is less than or equal to the second preset value ΔPr, that is, ΔP0≤ΔPr, the control system controls the vacuum pump to stop working.

[0027] Step S7: The control system controls the gas circuit control unit to introduce protective gas into the air replacement box until the difference ΔP1 between the gas pressure inside the air replacement box and the gas pressure inside the unpacking device is 0.

[0028] Step S8: The oxygen sensor detects the current oxygen concentration in the air exchange chamber and determines whether the current oxygen concentration in the air exchange chamber is lower than the reference value c%. If so, proceed to step S9; otherwise, return to step S5.

[0029] Step S9: The control system controls the rear drive mechanism to drive the rear sealing mechanism to open the outlet of the air replacement box, and determines whether the outlet is fully open based on the detection data of the position sensor. When the outlet is fully open, the control conveying component transports the material bag through the outlet to the unpacking device.

[0030] Step S10: The control system controls the rear drive mechanism to restore the rear sealing mechanism to its initial position;

[0031] Step S11: The control system controls the unpacking device to break the material bag. During the unpacking process, the dust removal component is controlled to run continuously. The differential pressure detection device on the dust removal component controls the on / off time of the pulse valve on the dust removal component and controls the flow rate of the protective gas introduced into the unpacking device to backflush the dust in the unpacking device.

[0032] Step S12: During the material feeding process in the material bag, the control system controls the material feeding fluidization device to introduce protective gas into the collection mechanism to break the arch and assist the flow of the material in the material feeding collection hopper.

[0033] Step S13: During the material feeding process in the material bag, the oxygen sensor installed in the material collection hopper detects whether the oxygen concentration in the collection mechanism is abnormal; if there is an abnormality, an alarm is triggered and the machine is stopped; otherwise, return to step S1.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] 1. Throughout the entire feeding and unpacking process, protective gas is used to isolate flammable materials, ensuring that the powder is never mixed with air during feeding and conveying, thus preventing the formation of an explosive dust environment inside the feeding equipment;

[0036] 2. Fully sealed feeding: Throughout the entire feeding and unpacking process, the material is always kept in a completely sealed space, preventing dust and smoke from escaping when released from the bag and avoiding pollution of the working environment during bag opening; through closed isolation and centralized dust removal, there is no dust spillage during the bag breaking and material separation process;

[0037] 3. Based on this control method, the gas concentration can be detected throughout the entire feeding and unpacking process. By detecting the gas concentration inside the equipment, an explosive dust environment can be avoided inside the feeding equipment, thus achieving effective control over feeding and unpacking. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the fully enclosed gas protection automatic unpacking system provided by the present invention.

[0039] Figure 2 This is a schematic diagram of the sealing assembly provided by the present invention.

[0040] Figure 3 A flowchart illustrating the control method for the fully enclosed gas-protected automatic unpacking system provided by the present invention. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0044] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0045] like Figure 1 As shown, the present invention is a fully enclosed gas protection automatic unpacking system, including a control system 7 and an air replacement box 1, an unpacking device 2, a sealing assembly 3, a conveying assembly 4, a collection mechanism 5, a gas comprehensive detection device 6, and a dust removal component 8, all electrically connected to the control system 7. The air replacement box 1 is sealed by the sealing assembly 3. One side of the unpacking device 2 is connected to the air replacement box 1. The dust removal component 8 and the collection mechanism 5 are respectively provided at the upper and lower ends of the unpacking device 2. The gas comprehensive detection device 6 is respectively installed inside the air replacement box 1, the unpacking device 2, and the collection mechanism 5.

[0046] The conveying assembly 4 is used to convey the material package from its initial position through the air displacement box 1 to the unpacking device 2;

[0047] The unpacking device 2 is used to break the material package; when the material package is cut open, the material inside the package falls into the collection mechanism 5.

[0048] The collecting mechanism 5 is used to collect materials falling from the unpacking device 2;

[0049] The gas integrated detection device 6 is used to detect the gas pressure inside the air replacement box 1 and the unpacking device 2, as well as the gas concentration inside the air replacement box 1, the unpacking device 2 and the collection mechanism 5.

[0050] The dust removal component 8 is used to backflush the dust inside the unpacking device 2 in order to control the dust content inside the unpacking device 2.

[0051] Specifically, the air replacement chamber 1 includes a vacuum pump and a gas path control unit. The vacuum pump is used to extract the air inside the air replacement chamber 1, and the gas path control unit is used to introduce external protective gas into the air replacement chamber 1.

[0052] Specifically, such as Figure 2 As shown, the sealing assembly 3 includes a front sealing mechanism 31, a front driving mechanism 32, a rear sealing mechanism 33, and a rear driving mechanism 34. The front sealing mechanism 31 and the front driving mechanism 32 are located at the front of the air exchange chamber 1, and the rear sealing mechanism 33 and the rear driving mechanism 34 are located at the rear of the air exchange chamber 1. The front driving mechanism 32 and the rear driving mechanism 34 are both electrically connected to the control system 7. The front driving mechanism 32 is used to drive the front sealing mechanism 31 to move, and the rear driving mechanism 34 is used to drive the rear sealing mechanism 33 to move. After the front sealing mechanism 31 and the rear sealing mechanism 33 move into position, they can seal the air exchange chamber 1.

[0053] In this embodiment of the invention, both the front drive mechanism 32 and the rear drive mechanism 34 are provided with position sensors. The position sensors are electrically connected to the control system 7. The position sensors are used to detect whether the front drive mechanism 32 and the rear drive mechanism 34 are driven into position and to feed back the detection data to the control system 7.

[0054] Specifically, the gas integrated detection device 6 includes a differential pressure detection unit and a gas concentration detection unit. The differential pressure detection unit is installed in the air replacement box 1 and the unpacking device 2, and the gas concentration detection unit is installed in the air replacement box 1, the unpacking device 2 and the collection mechanism 5, respectively.

[0055] The differential pressure detection unit includes a differential pressure sensor, which is used to detect the difference between the gas pressure inside the air replacement box 1 and the gas pressure inside the unpacking device 2;

[0056] The gas concentration detection unit includes an oxygen sensor, which is used to detect the oxygen concentration inside the air replacement box 1, the unpacking device 2, and the collection mechanism 5.

[0057] In this embodiment of the invention, the collecting mechanism 5 includes a material collection hopper and a material fluidization device. The material collection hopper is sealed to the bottom of the unpacking device 2. The material collection hopper is used to collect materials falling from the unpacking device 2. The material fluidization device is fixed on the material collection hopper and is electrically connected to the control system 7. The control system 7 can control the fluidization of materials in the material collection hopper through the material fluidization device.

[0058] In this embodiment of the invention, the collecting mechanism 5 further includes a material discharge control device electrically connected to the control system 7. The bottom end of the material discharge collecting hopper is connected to a material conveying pipe, and the material discharge control device is used to control the material in the material discharge collecting hopper to be discharged through the material conveying pipe. The collected material is then conveyed to downstream processing equipment via the material conveying pipe. The control system 7 receives information from the downstream processing equipment and periodically and quantitatively discharges material through the material discharge control device.

[0059] Material supply for downstream process equipment.

[0060] In this embodiment of the invention, the collecting mechanism 5 further includes an active air replenishment device electrically connected to the control system 7, the active air replenishment device being used to control the conveying pressure inside the material conveying pipeline.

[0061] Specifically, the conveying assembly 4 includes a drive mechanism and a position sensor. Both the drive mechanism and the position sensor are electrically connected to the control system 7. The drive mechanism is used to drive the belt conveyor component to move, thereby moving the material bag on the belt conveyor component. The position sensor is used to detect the movement position of the material bag in the air displacement box 1.

[0062] The fully enclosed gas-protected automatic unpacking system provided by this invention realizes automatic material conveying through a conveying component, eliminating the process of manual intervention. The sealing component can ensure no dust leakage inside the equipment and isolation from the outside air. The unpacking device separates the material packaging from the material and collects it into the conveying pipeline, ultimately realizing unmanned automatic unpacking and providing effective sealing protection.

[0063] This embodiment also provides a control method for a fully enclosed gas-protected automatic unpacking system, such as... Figure 3 As shown, it includes the following steps:

[0064] Step S1: After the internal environment of the unpacking device 2 passes the self-inspection, the control system 7 controls the front drive mechanism 32 to drive the front sealing mechanism 31 to move to open the feed port of the air replacement box 1. Then the control system 7 controls the conveying assembly 4 to convey the material bag through the feed port into the air replacement box 1.

[0065] Step S2: After the material bag enters the air replacement box 1, the position sensor detects the current position data X0 of the material bag and transmits the current position data X0 of the material bag to the control system 7;

[0066] Step S3: The control system 7 compares the current position data X0 of the material bag with the reference position data Xr. When the difference between the current position data X0 of the material bag and the reference position data Xr is less than or equal to the first preset value Lmin, that is, |Xr-X0|≤Lmin, it is considered that the material bag has moved into place in the air replacement box 1.

[0067] Step S4: After the material bag moves into position in the air replacement box 1, the control system 7 controls the front drive mechanism 32 to drive the front sealing mechanism 31 to move to close the feed port of the air replacement box 1, and determines whether the feed port is completely closed according to the detection data of the position sensor. When the feed port is completely closed, a completely closed chamber is formed in the air replacement box 1.

[0068] Step S5: The control system 7 controls the vacuum pump in the air replacement box 1 to start working and extract the air from the sealed air replacement box;

[0069] Step S6: The differential pressure sensor detects the difference ΔP0 between the gas pressure inside the air replacement box 1 and the gas pressure inside the unpacking device 2 in real time. When the difference ΔP0 is less than or equal to the second preset value ΔPr, that is, ΔP0≤ΔPr, the control system 7 controls the vacuum pump to stop working.

[0070] Step S7: The control system 7 controls the gas circuit control unit to introduce protective gas into the air replacement box 1 until the difference ΔP1 between the gas pressure inside the air replacement box 1 and the gas pressure inside the unpacking device 2 is 0.

[0071] Step S8: The oxygen sensor detects the current oxygen concentration in the air exchange chamber 1 and determines whether the current oxygen concentration in the air exchange chamber 1 is lower than the reference value c%. If so, proceed to step S9; otherwise, return to step S5.

[0072] Step S9: The control system 7 controls the rear drive mechanism 34 to drive the rear sealing mechanism 33 to move to open the outlet of the air replacement box 1, and determines whether the outlet is fully open according to the detection data of the position sensor. When the outlet is fully open, the control conveying component 4 conveys the material bag through the outlet to the unpacking device 2.

[0073] Step S10: The control system 7 controls the rear drive mechanism 34 to restore the rear sealing mechanism 33 to its initial position;

[0074] Step S11: The control system 7 controls the unpacking device 2 to break the material bag. During the unpacking process, the dust removal component 8 is controlled to run continuously. The differential pressure detection device on the dust removal component 8 controls the on / off time of the pulse valve on the dust removal component 8 and controls the flow rate of the protective gas introduced into the unpacking device 2 to backflush the dust in the unpacking device 2.

[0075] Step S12: During the material feeding process in the material bag, the control system 7 controls the material fluidization device to introduce protective gas into the collection mechanism 5 to break the arch and assist the flow of the material in the material collection hopper.

[0076] Step S13: During the material feeding process in the material bag, the oxygen sensor installed in the material collection hopper detects whether the oxygen concentration in the collection mechanism 5 is abnormal; if there is an abnormality, an alarm is triggered and the machine is stopped; otherwise, return to step S1.

[0077] The present invention provides a control method for a fully enclosed gas-protected automatic unpacking system, (1) gas replacement: using protective gas as a protective medium to keep the inside of the equipment in an environment with low risk of flammable dust explosion; (2) fully sealed feeding: throughout the feeding and unpacking process, the material is always in a completely sealed space. Through closed isolation and centralized dust removal, no dust overflows during the bag breaking and material separation process; (3) intelligent control method: throughout the feeding and unpacking process, the gas concentration can be detected, and the protective gas is actively replenished to avoid the formation of an explosive dust environment inside the feeding equipment, thus achieving effective control of feeding and unpacking.

[0078] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A control method for a fully enclosed gas-protected automatic unpacking system, characterized in that, The fully enclosed gas protection automatic unpacking system includes a control system (7) and an air replacement box (1), an unpacking device (2), a sealing assembly (3), a conveying assembly (4), a collection mechanism (5), a gas comprehensive detection device (6), and a dust removal component (8) that are electrically connected to the control system (7). The air replacement box (1) is sealed by the sealing assembly (3). One side of the unpacking device (2) is connected to the air replacement box (1). The dust removal component (8) and the collection mechanism (5) are respectively provided at the upper and lower ends of the unpacking device (2). The gas comprehensive detection device (6) is respectively installed in the air replacement box (1), the unpacking device (2), and the collection mechanism (5). The conveying assembly (4) is used to convey the material package from its initial position through the air displacement box (1) to the unpacking device (2); The unpacking device (2) is used to break the package; wherein, when the package is cut open, the material inside the package falls into the collection mechanism (5); The collecting mechanism (5) is used to collect the material falling from the unpacking device (2); The gas integrated detection device (6) is used to detect the gas pressure inside the air replacement box (1) and the unpacking device (2), as well as the gas concentration inside the air replacement box (1), the unpacking device (2) and the collection mechanism (5); The dust removal component (8) is used to backflush the dust inside the unpacking device (2) in order to control the dust content inside the unpacking device (2); The sealing assembly (3) includes a front sealing mechanism (31), a front driving mechanism (32), a rear sealing mechanism (33), and a rear driving mechanism (34). The front sealing mechanism (31) and the front driving mechanism (32) are located at the front of the air replacement box (1), and the rear sealing mechanism (33) and the rear driving mechanism (34) are located at the rear of the air replacement box (1). The front driving mechanism (32) and the rear driving mechanism (34) are both electrically connected to the control system (7). The front driving mechanism (32) is used to drive the front sealing mechanism (31) to move, and the rear driving mechanism (34) is used to drive the rear sealing mechanism (33) to move. After the front sealing mechanism (31) and the rear sealing mechanism (33) move into position, they can seal the air replacement box (1). The control method of the fully enclosed gas-protected automatic unpacking system includes the following steps: Step S1: After the internal environment of the unpacking device (2) passes the self-inspection, the control system (7) controls the front drive mechanism (32) to drive the front sealing mechanism (31) to move to open the feed port of the air replacement box (1), and then the control system (7) controls the conveying assembly (4) to convey the material bag through the feed port into the air replacement box (1). Step S2: After the material bag enters the air replacement box (1), the position sensor detects the current position data X0 of the material bag and transmits the current position data X0 of the material bag to the control system (7). Step S3: The control system (7) compares the current position data X0 of the material bag with the reference position data Xr. When the difference between the current position data X0 of the material bag and the reference position data Xr is less than or equal to the first preset value Lmin, that is, |Xr-X0|≤Lmin, it is considered that the material bag has moved into place in the air replacement box (1). Step S4: After the material bag moves into position in the air replacement box (1), the control system (7) controls the front drive mechanism (32) to drive the front sealing mechanism (31) to move to close the feed port of the air replacement box (1), and judges whether the feed port is completely closed according to the detection data of the position sensor. When the feed port is completely closed, a completely closed chamber is formed in the air replacement box (1). Step S5: The control system (7) controls the vacuum pump in the air replacement box (1) to start working and extract the air from the sealed air replacement box; Step S6: The differential pressure sensor detects the difference ΔP0 between the gas pressure inside the air replacement box (1) and the gas pressure inside the unpacking device (2) in real time. When the difference ΔP0 is less than or equal to the second preset value ΔPr, that is, ΔP0≤ΔPr, the control system (7) controls the vacuum pump to stop working. Step S7: The control system (7) controls the gas circuit control unit to introduce protective gas into the air replacement box (1) until the difference ΔP1 between the gas pressure inside the air replacement box (1) and the gas pressure inside the unpacking device (2) is 0. Step S8: The oxygen sensor detects the current oxygen concentration in the air exchange chamber (1) and determines whether the current oxygen concentration in the air exchange chamber (1) is lower than the reference value c%. If so, proceed to step S9; otherwise, return to step S5. Step S9: The control system (7) controls the rear drive mechanism (34) to drive the rear sealing mechanism (33) to move to open the outlet of the air replacement box (1), and judges whether the outlet is fully open according to the detection data of the position sensor. When the outlet is fully open, the control conveying component (4) transports the package through the outlet to the unpacking device (2). Step S10: The control system (7) controls the rear drive mechanism (34) to restore the rear sealing mechanism (33) to its initial position; Step S11: The control system (7) controls the unpacking device (2) to break the material bag. During the unpacking process, the dust removal component (8) is controlled to run continuously. The differential pressure detection device on the dust removal component (8) controls the on / off time of the pulse valve on the dust removal component (8) and controls the flow rate of the protective gas introduced into the unpacking device (2) to back-flush the dust in the unpacking device (2). Step S12: During the material feeding process in the material bag, the control system (7) controls the material fluidization device to introduce protective gas into the collection mechanism (5) to break the arch and assist the flow of the material in the material collection hopper; Step S13: During the material feeding process in the material bag, the oxygen sensor installed in the material collection hopper detects whether the oxygen concentration in the collection mechanism (5) is abnormal; if there is an abnormality, an alarm is triggered and the machine is stopped; otherwise, return to step S1.

2. The control method of the fully enclosed gas-protected automatic unpacking system as described in claim 1, characterized in that, The air replacement chamber (1) includes a vacuum pump and a gas path control unit. The vacuum pump is used to extract the air inside the air replacement chamber (1), and the gas path control unit is used to introduce external protective gas into the air replacement chamber (1).

3. The control method for the fully enclosed gas-protected automatic unpacking system as described in claim 1, characterized in that, Both the front drive mechanism (32) and the rear drive mechanism (34) are equipped with position sensors. The position sensors are electrically connected to the control system (7). The position sensors are used to detect whether the front drive mechanism (32) and the rear drive mechanism (34) are driven into position and to feed back the detection data to the control system (7).

4. The control method for the fully enclosed gas-protected automatic unpacking system as described in claim 1, characterized in that, The gas integrated detection device (6) includes a differential pressure detection unit and a gas concentration detection unit. The differential pressure detection unit is installed in the air replacement box (1) and the unpacking device (2). The gas concentration detection unit is installed in the air replacement box (1), the unpacking device (2) and the collection mechanism (5), respectively. The differential pressure detection unit includes a differential pressure sensor, which is used to detect the difference between the gas pressure inside the air replacement box (1) and the gas pressure inside the unpacking device (2); The gas concentration detection unit includes an oxygen sensor, which is used to detect the oxygen concentration inside the air replacement box (1), the unpacking device (2), and the collection mechanism (5).

5. The control method for the fully enclosed gas-protected automatic unpacking system as described in claim 1, characterized in that, The collection mechanism (5) includes a material collection hopper and a material fluidization device. The material collection hopper is sealed to the bottom of the unpacking device (2). The material collection hopper is used to collect the material falling from the unpacking device (2). The material fluidization device is fixed on the material collection hopper. The material fluidization device is electrically connected to the control system (7). The control system (7) can control the fluidization of the material in the material collection hopper through the material fluidization device.

6. The control method for the fully enclosed gas-protected automatic unpacking system as described in claim 5, characterized in that, The collection mechanism (5) further includes a material discharge control device electrically connected to the control system (7). The bottom end of the material discharge collection hopper is connected to a material conveying pipe. The material discharge control device is used to control the material in the material discharge collection hopper to be discharged through the material conveying pipe.

7. The control method for the fully enclosed gas-protected automatic unpacking system as described in claim 6, characterized in that, The collecting mechanism (5) also includes an active air replenishment device electrically connected to the control system (7), which is used to control the conveying pressure inside the material conveying pipeline.

8. The control method for the fully enclosed gas-protected automatic unpacking system as described in claim 1, characterized in that, The conveying assembly (4) includes a drive mechanism and a position sensor. Both the drive mechanism and the position sensor are electrically connected to the control system (7). The drive mechanism is used to drive the belt conveyor component to move, thereby driving the material bag on the belt conveyor component to move. The position sensor is used to detect the movement position of the material bag in the air displacement box (1).

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