Material conveying system with atmosphere protection and its inflation method and air exchange method

Abstract

The application provides a material conveying system with atmosphere protection and an inflation method and an air replacement method thereof, and belongs to the technical field of material conveying equipment. The material conveying system comprises a first protection shell, a second protection shell, a material conveyor and a gas feeding device. The second protection shell forms a second protection atmosphere space. The material conveyor is arranged in the second protection shell and located in the second protection atmosphere space. The first protection shell is arranged above the material conveyor and forms a first protection atmosphere space between the material conveyor and the first protection shell, which is located in the second protection atmosphere space. The material conveyor comprises a material conveying position for conveying materials. The material conveying position is located in the first protection atmosphere space. The gas feeding device is communicated with at least the first protection atmosphere space and feeds protection gas into the first protection atmosphere space. The application can form double-layer protection for the materials conveyed by the material conveyor, increase the isolation degree between the protection atmosphere and the external gas environment, reduce the leakage of the protection gas and increase the protection effect on the materials.

Description

Technical Field

[0001] This invention relates to the field of material conveying equipment technology, and in particular to a material conveying system with atmosphere protection and its inflation and ventilation methods. Background Technology

[0002] In the conveying of bulk materials such as powders, granules, or lumps, the materials' properties necessitate avoiding direct contact with certain specific gaseous environments, such as air. For example, in the metallurgical industry, high-temperature reduced iron (HTRE) will be rapidly oxidized if it comes into direct contact with oxidizing gases like air, altering its properties and failing to meet production process requirements. Therefore, HTRE must be kept away from air throughout the conveying process to prevent oxidation. Currently, a protective atmosphere is typically used to protect materials like HTRE that require isolation from specific gaseous environments during transport, preventing reactions. This protective atmosphere is usually composed of highly stable gases that do not affect the material's properties, such as nitrogen or inert gases. However, current material conveyors often have poor sealing, resulting in insufficient isolation between the protective atmosphere and the external gaseous environment and inadequate protection. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a material conveying system with atmosphere protection and its inflation and ventilation methods, so as to solve the problem of insufficient isolation between the protective atmosphere and the external gas environment and poor protection effect in the prior art.

[0004] To achieve the above and other related objectives, the present invention provides a material conveying system with atmosphere protection, comprising a first protective shell, a second protective shell, a material conveyor and an air supply device, wherein a second protective atmosphere space is formed inside the second protective shell, and the material conveyor is disposed inside the second protective shell and located in the second protective atmosphere space;

[0005] The first protective housing is disposed above the material conveyor and forms a first protective atmosphere space within the second protective atmosphere space with the material conveyor. The material conveyor includes a material conveying position for conveying materials, which is located within the first protective atmosphere space. The gas supply device is at least in communication with the first protective atmosphere space and supplies protective gas into the first protective atmosphere space.

[0006] Optionally, there is a movement gap between the first protective shell and the material conveyor, the first protective atmosphere space and the second protective atmosphere space are connected through the movement gap, and a movement sealing structure is provided in the movement gap.

[0007] Optionally, the motion sealing structure includes a first sealing plate and a second sealing plate. The first sealing plate is disposed on the material conveyor, and the second sealing plate is disposed on the first protective shell. The gap between the first sealing plate and the first protective shell is a first gap, and the gap between the second sealing plate and the material conveyor is a second gap. The first sealing plate and the second sealing plate are offset from each other. In the communication direction of the motion gap, the first sealing plate blocks the second gap, and the second sealing plate blocks the first gap.

[0008] Optionally, the air supply direction of the air supply device is opposite to the material conveying direction of the material conveyor.

[0009] Optionally, the material conveyor includes a conveyor chain and a hopper disposed on the conveyor chain. The first protective shell forms a first protective atmosphere space along the length direction of the conveyor chain, and the conveyor chain drives the hopper to move within the first protective atmosphere space along the length direction of the conveyor chain.

[0010] Optionally, there are multiple hoppers, which are arranged sequentially along the length of the conveyor chain.

[0011] Optionally, the material conveyor further includes a frame, on which idlers are arranged along the length of the conveyor chain, and the hopper slides on the idlers.

[0012] Optionally, the material conveyor further includes a buffer bin for feeding materials into the material conveyor and a discharge port for discharging materials. The buffer bin is located above the material conveyor at the head end of the conveyor chain, and the discharge port is located below the material conveyor at the tail end of the conveyor chain.

[0013] Optionally, a heat insulation layer is provided on the first protective shell.

[0014] Optionally, the material conveying system with atmosphere protection further includes a ventilation device and a collection device, wherein the ventilation device and the collection device are respectively connected to the second protective atmosphere space, the ventilation device is used to ventilate the second protective atmosphere space, and the collection device is used to collect the protective gas in the second protective atmosphere space.

[0015] Optionally, the ventilation direction of the ventilation device is the same as the collection direction of the collection device.

[0016] Optionally, the ventilation device and the collection device are respectively connected to both sides of the second protective atmosphere space.

[0017] Optionally, the ventilation device and the collection device are also connected to the first protective atmosphere space, the ventilation device is used to ventilate the first protective atmosphere space and the second protective atmosphere space, and the collection device is used to collect the protective gas in the first protective atmosphere space and the second protective atmosphere space.

[0018] The present invention also provides a method for charging a material conveying system with atmosphere protection, which uses a material conveying system with atmosphere protection as described in any of the above claims, and charges a protective gas into the first protective shell through the gas supply device to form a protective atmosphere in the first protective atmosphere space. The protective gas in the first protective shell escapes from the first protective shell and enters the second protective shell to form a protective atmosphere in the second protective atmosphere space.

[0019] Alternatively, the gas supply device is also connected to the second protective atmosphere space, and protective gas is supplied to the first protective shell and the second protective shell respectively through the gas supply device, and the protective gas forms a protective atmosphere in the first protective atmosphere space and the second protective atmosphere space respectively.

[0020] The present invention also provides a ventilation method for a material conveying system with atmosphere protection, wherein the material conveying system with atmosphere protection as described in any of the above claims is used, and when ventilation is provided to the second protective atmosphere space through the ventilation device, the protective gas in the second protective atmosphere space is collected by the collection device.

[0021] As described above, the material conveying system with atmosphere protection and its inflation and ventilation methods of the present invention have the following beneficial effects: By setting up a first protective shell, a second protective shell, and an air supply device, the air supply device can introduce protective gas into the first protective shell, forming a first protective atmosphere space and a second protective atmosphere space. The first protective atmosphere space is located within the second protective atmosphere space, and the material conveying position of the material conveyor is located within the first protective atmosphere space. The first and second protective atmosphere spaces form a double layer of protection for the material conveyed by the material conveyor, increasing the degree of isolation between the protective atmosphere and the external gas environment, reducing the leakage of protective gas, and increasing the protection effect on the material. Attached Figure Description

[0022] Figure 1 The diagram shown is a side cross-sectional view of a material conveying system with atmosphere protection in an embodiment of the present invention.

[0023] Figure 2 The diagram shown is a front cross-sectional view of a material conveying system with atmosphere protection in an embodiment of the present invention.

[0024] Figure 3 The diagram shown is a structural schematic of the first protective shell and the material conveyor in an embodiment of the present invention.

[0025] Figure 4 The diagram shown is an enlarged structural schematic of the motion sealing structure in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached drawings: 1. Material conveyor; 2. First protective shell; 3. Second protective shell; 4. Air supply device; 5. Ventilation device; 6. Collection device; 7. Moving sealing structure; 10. Frame; 11. Hopper; 12. Idler roller; 13. Side plate; 14. Drive mechanism; 15. Buffer chamber; 16. Feed control valve; 17. Discharge port; 20. First protective atmosphere space; 21. Sealing cover; 22. Heat insulation layer; 30. Second protective atmosphere space; 31. Frame; 32. Skin; 33. Maintenance passage; 40. Main protective gas pipe; 41. Protective gas source; 42. Protective gas branch pipe; 43. Support column; 50. Air supply pipe; 51. Air supply source; 52. Air inlet pipe; 53. Air outlet; 54. Support frame; 60. Air outlet pipe; 61. Recoverer; 70. Sealing cavity; 71. First sealing plate; 72. Second sealing plate. Detailed Implementation

[0027] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] Please see Figures 1 to 4 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0029] Please see Figures 1-2This embodiment provides a material conveying system with atmosphere protection to solve the problem of insufficient isolation between the protective atmosphere and the external gas environment and poor protection effect in the prior art.

[0030] The material conveying system with atmosphere protection provided in this embodiment includes a first protective shell 2, a second protective shell 3, a material conveyor 1, and an air supply device 4. A second protective atmosphere space 30 is formed inside the second protective shell 3. The material conveyor 1 is disposed inside the second protective shell 3 and located within the second protective atmosphere space 30. The first protective shell 2 covers the material conveyor 1 and forms a first protective atmosphere space 20 within the second protective atmosphere space 30 between the first protective shell 2 and the material conveyor 1. The material conveyor 1 includes a material conveying position for conveying material, which is located within the first protective atmosphere space 20. The air supply device 4 is at least in communication with the first protective atmosphere space 20 and supplies protective gas into the first protective atmosphere space 20. In this embodiment, the material conveyed by the material conveyor 1 is HDRI (High Temperature Direct Reduced Iron).

[0031] The first protective atmosphere space 20 and the second protective atmosphere space 30 form a double layer of protection for the material conveyed by the material conveyor 1, which increases the degree of isolation between the protective atmosphere and the external gas environment, reduces the leakage of the protective atmosphere, and increases the protection effect on the material.

[0032] like Figure 3 As shown, in this embodiment, a movement gap exists between the first protective shell 2 and the material conveyor 1. The first protective atmosphere space 20 and the second protective atmosphere space 30 are connected through the movement gap, and a movement sealing structure 7 is provided in the movement gap. Because of the movement gap between the first protective shell 2 and the material conveyor 1, the material conveyor 1 can move relative to the first protective shell 2, thereby conveying materials. The movement gap provides sufficient horizontal deviation space for the conveyor chain, improving the reliability of the conveyor chain operation. The movement sealing structure 7 can seal the movement gap, reducing the leakage of protective gas from the first protective atmosphere space 20 through the movement gap.

[0033] Specifically, such as Figure 4 As shown, in this embodiment, the motion sealing structure 7 includes a first sealing plate 71 and a second sealing plate 72. The first sealing plate 71 is disposed on the material conveyor 1, and the second sealing plate 72 is disposed on the first protective shell 2. The gap between the first sealing plate 71 and the first protective shell 2 is the first gap, and the gap between the second sealing plate 72 and the material conveyor 1 is the second gap. The first sealing plate 71 and the second sealing plate 72 are staggered. In the communication direction of the motion gap, the first sealing plate 71 blocks the second gap, and the second sealing plate 72 blocks the first gap.

[0034] In this embodiment, the material conveyor 1 includes a conveyor chain and a hopper 11 disposed on the conveyor chain. The conveyor chain is disposed along the conveying direction of the material conveyor 1, and the hopper 11 is the material conveying position of the material conveyor 1. The first protective shell 2 is disposed along the conveyor chain to form a first protective atmosphere space 20, and the conveyor chain drives the hopper 11 to move along the conveyor chain within the first protective atmosphere space 20.

[0035] Specifically, in this embodiment, the material conveyor 1 further includes a frame 10 and a drive mechanism 14. Multiple idlers 12 are arranged along the conveyor chain on the frame 10. Multiple hoppers 11 can be arranged sequentially along the conveyor chain, allowing for continuous material conveying. In this embodiment, the conveyor chain is connected to the drive mechanism 14, which can be a motor, a gasoline engine, or other power mechanism. Under the action of the drive mechanism 14, the conveyor chain pulls the hoppers 11 to slide on the idlers 12, thereby conveying the material. The idlers 12 can reduce the sliding resistance of the hoppers 11 and improve the material conveying efficiency.

[0036] In some embodiments, the material conveyor 1 further includes a buffer bin 15 and a discharge port 17. The buffer bin 15 is located above the head end of the conveyor chain, and its opening passes through the second protective shell 3 and the first protective shell 2, entering the first protective atmosphere space 20. Material in the buffer bin 15 can enter the hopper 11 through the opening under the action of gravity or other mechanisms. The discharge port 17 is located below the end of the conveyor chain and extends through the first protective shell 2 and the second protective shell 3. When the hopper 11 reaches the end of the conveyor chain under its traction, the hopper 11 flips, and the material inside is discharged through the discharge port 17. The buffer bin 15 can buffer the material, reducing the impact of the material on the material conveyor 1. In this embodiment, the opening of the buffer bin 15 is equipped with a feed control valve 16, which can control the rate and amount of material entering the material conveyor 1, and adjust the feed flow rate.

[0037] In this embodiment, the first sealing plate 71 is disposed on the side plate 13 of the hopper 11. The first protective shell 2 includes a sealing cover 21, and a sealing cavity 70 is formed between the side plate 13, the first sealing plate 71, the second sealing plate 72, and the inner wall of the sealing cover 21. The side plates 13 are located on both sides of the hopper 11 in the direction of movement. When the hopper 11 moves along the conveyor chain, the first sealing plate 71 moves with the hopper 11.

[0038] In this embodiment, the material conveying system with atmosphere protection further includes a gas supply device 4 for supplying protective gas to the first protective atmosphere space 20, and the gas supply device 4 is connected to the first protective atmosphere space 20. The gas supply device 4 fills the first protective atmosphere space 20 with protective atmosphere, forming a dense phase protective atmosphere within the first protective atmosphere space 20. After escaping through the moving sealing structure 7, the protective atmosphere in the first protective atmosphere space 20 reaches the second protective atmosphere space 30, where a low-oxygen, high-concentration protective atmosphere is formed. The first and second protective atmosphere spaces 20 provide dual protection for the material, with a good sealing effect, effectively preventing HDRI oxidation.

[0039] Specifically, in this embodiment, the gas supply device 4 includes a protective gas source 41, a protective gas main pipe 40, and protective gas branch pipes 42. The protective gas main pipe 40 passes through the second protective shell 3 and enters the second protective atmosphere space 30. The protective gas branch pipes 42 pass through the first protective shell 2 and communicate with the first protective atmosphere space 20. The protective gas source 41 supplies protective gas to the first protective atmosphere space 20 through the protective gas main pipe 40 and the protective gas branch pipes 42. In this embodiment, the protective gas main pipe is arranged along the conveying direction of the material conveyor 1, and there are multiple protective gas branch pipes 42, which are arranged sequentially and evenly along the conveying direction of the material conveyor 1. When the protective gas source 41 supplies protective atmosphere into the first protective atmosphere space 20, the multiple protective gas branch pipes 42 can evenly supply protective atmosphere into the first protective atmosphere space 20, making the protective atmosphere concentration in the first protective atmosphere space 20 uniform, and avoiding the failure of material protection due to excessively low local concentration of protective atmosphere in the first protective atmosphere space 20.

[0040] Specifically, in this embodiment, the gas delivery direction of the gas delivery device 4 is opposite to the material delivery direction of the material conveyor 1. This can prevent the protective atmosphere in the first protective atmosphere space 20 from accumulating in the material delivery direction under the action of the material conveyor 1, and prevent the local concentration of the protective gas in the first protective atmosphere space 20 from being too low, which would lead to the failure of the protection of the material.

[0041] In this embodiment, the frame 10 of the material conveyor 1 is provided with a support column 43. There are multiple support columns 43, which are arranged sequentially along the length direction of the protective gas main pipe 40. The protective gas main pipe 40 is arranged on the support column 43, and the support column 43 provides support for the protective gas main pipe 40.

[0042] In some situations, personnel need to enter the second protective atmosphere space 30 to perform tasks such as maintenance on the material conveyor 1. In this embodiment, maintenance passages 33 are provided on both sides of the material conveyor 1 to facilitate personnel access. Therefore, the second protective atmosphere space 30 needs to be ventilated to allow personnel to enter. Simultaneously, the protective gas has recovery value and needs to be recycled.

[0043] Therefore, in this embodiment, the material conveying system with atmosphere protection also includes a ventilation device 5 and a collection device 6. The ventilation device 5 and the collection device 6 are respectively connected to the second protective atmosphere space 30. The ventilation device 5 is used to ventilate into the second protective atmosphere space 30, and the collection device 6 is used to collect the protective gas in the second protective atmosphere space 30.

[0044] In other embodiments, the ventilation device 5 and the collection device 6 are also connected to the first protective atmosphere space 20. The ventilation device 5 can simultaneously ventilate the first protective atmosphere space 20 and the second protective atmosphere space 30, and the collection device 6 can simultaneously collect the protective gas in the first protective atmosphere space 20 and the second protective atmosphere space 30. This allows for simultaneous ventilation and collection of the protective gas in both spaces, preventing the protective gas in the first protective atmosphere space 20 from entering the second protective atmosphere space 30 during maintenance and thus avoiding disruption to the maintenance work. Simultaneously, the protective gas in the first protective atmosphere space 20 can also be collected to prevent its escape and waste.

[0045] In this embodiment, the ventilation direction of the ventilation device 5 is the same as the collection direction of the collection device 6. That is, the ventilation device 5 ventilates and replaces the air in the collection device 6. Since the ventilation direction of the ventilation device 5 is the same as the collection direction of the collection device 6, the protective gas in the second protective atmosphere space 30 can enter the collection device 6 more quickly under the action of the ventilation device 5, which facilitates the collection of the protective gas by the collection device 6.

[0046] In this embodiment, the ventilation device 5 and the collection device 6 are respectively connected to both sides of the second protective atmosphere space 30. Specifically, the ventilation device 5 and the collection device 6 are respectively connected to the two ends of the conveyor chain. In this embodiment, the ventilation device 5 is connected to the second protective atmosphere space 30 at the end of the conveyor chain, and the collection device 6 is connected to the second protective atmosphere space 30 at the beginning of the conveyor chain. The ventilation direction of the ventilation device 5, which is also the collection direction of the collection device 6, is the same as the air supply direction of the air supply device 4, which facilitates ventilation of the second protective atmosphere space 30 and also facilitates the collection of protective gas.

[0047] Specifically, in this embodiment, the ventilation device 5 includes an air supply source 51, an air inlet pipe 52, and an air supply duct 50. The air supply duct 50 is disposed inside the second protective shell 3 along the conveying direction of the material conveyor 1. The air inlet pipe 52 passes through the second protective shell 3 and connects the air supply source 51 and the air supply duct 50. The air supply source 51 supplies air to the air supply duct 50 through the air inlet pipe 52. Multiple air outlets 53 are disposed along the conveyor chain on the air supply duct 50. The air outlets 53 are evenly distributed to allow the air supplied by the air supply source 51 to enter the second protective shell 3 evenly. In this embodiment, multiple support frames 54 are sequentially disposed on the inner wall of the second protective shell 3 along the conveying direction of the material conveyor 1, i.e., along the conveyor chain. The air supply duct 50 is mounted on the support frames 54. The support frames 54 are disposed above the maintenance passage 33, which facilitates the passage of personnel.

[0048] In this embodiment, the collection device 6 includes a collector 61 and an exhaust pipe 60. The exhaust pipe 60 passes through the second protective shell 3 and enters the second protective atmosphere space 30. The protective gas in the second protective atmosphere space 30 enters the collector 61 through the exhaust pipe 60. Because the ventilation device 5 supplies air to the second protective atmosphere space 30, the pressure in the second protective atmosphere space 30 increases, and the protective gas in the second protective atmosphere space 30 enters the collection device 6 under the pressure. The collector 61 can be a negative pressure device to actively collect the protective gas in the second protective atmosphere space 30, thereby improving the recovery rate of the protective gas.

[0049] In some embodiments, the ventilation device 5 supplies air into the second protective housing 3. Air is inexpensive, widely available, and suitable for industrial applications. In other embodiments, the ventilation device 5 supplies oxygen into the second protective housing 3, which can quickly increase the oxygen concentration in the second protective atmosphere space 30, bringing the oxygen concentration in the second protective housing 3 close to the atmospheric composition, reaching a level that allows personnel to enter, reducing ventilation time, and improving work efficiency. Correspondingly, the protective gas supplied by the gas supply device 4 can be nitrogen, which is inexpensive and a major component of air. When the ventilation device 5 is filled with oxygen, the gas in the second protective atmosphere space 30 can quickly approach the atmospheric composition, which is beneficial for personnel breathing in the second protective housing 3 and improves the working comfort of personnel. In still other embodiments, the gas supply device 4 can supply inert gases such as argon into the first protective housing 2. Inert gases have good stability, are unlikely to react with materials, and can be applied to a wider range of materials.

[0050] In this embodiment, the second protective shell 3 includes a frame 31 and a skin 32 disposed on the frame 31. The first protective shell 2 and the material conveyor 1 are disposed inside the second protective shell 3. The first protective shell 2 also includes a heat insulation layer 22. Since some materials have high temperatures, the heat insulation layer 22 can reduce heat loss during material conveying. In this embodiment, the heat insulation layer 22 is disposed inside the first protective shell 2, i.e., the sealing cover 21.

[0051] This embodiment also provides a method for charging a material conveying system with atmosphere protection. Using the material conveying system with atmosphere protection as described above, protective gas is charged into the first protective shell 2 via an air supply device 4, forming a protective atmosphere in the first protective atmosphere space 20. The protective gas in the first protective shell 2 escapes into the second protective shell 3, forming a protective atmosphere in the second protective atmosphere space 30.

[0052] The gas supply device 4 fills the first protective shell 2 with a protective atmosphere, and the protective atmosphere in the first protective atmosphere space 20 is a dense phase protective atmosphere. After the protective atmosphere in the first protective shell 2 escapes through the gaps in the material conveyor 1 and the moving sealing structure 7, it enters the second protective shell 3. The second protective atmosphere space 30 is a low-oxygen, high-concentration protective atmosphere. The first protective atmosphere space 20 and the second protective atmosphere space 30 provide dual protection for the material, with a good sealing effect, which can effectively prevent HDRI oxidation.

[0053] In other embodiments, the gas supply device 4 is also connected to the second protective atmosphere space 30. Protective gas can be supplied to the first protective shell 2 and the second protective shell 3 via the gas supply device 4, respectively, allowing protective atmospheres to be formed in the first protective atmosphere space 20 and the second protective atmosphere space 30. The protective atmosphere forms more quickly in the second protective atmosphere space 30, which is more beneficial for material protection.

[0054] This embodiment also provides a ventilation method for a material conveying system with atmosphere protection. Using the material conveying system with atmosphere protection as described above, when ventilation is introduced into the second protective atmosphere space 30 via ventilation device 5, the protective gas within the second protective atmosphere space 30 is collected by collection device 6. Collecting the protective gas simultaneously with ventilation effectively reduces the difficulty of ventilation and protective gas collection, and improves the efficiency of both processes.

[0055] In summary, the material conveying system with atmosphere protection and its inflation and ventilation methods of this embodiment, by setting a first protective shell 2 and a second protective shell 3, respectively form a first protective atmosphere space 20 and a second protective atmosphere space 30. The first protective atmosphere space 20 is disposed within the second protective atmosphere space 30, and the material conveying position of the material conveyor 1 is disposed within the first protective atmosphere space 20. The first protective atmosphere space 20 and the second protective atmosphere space 30 form a double layer of protection for the material conveyed by the material conveyor 1, increasing the degree of isolation between the protective atmosphere and the external gas environment, reducing the leakage of protective gas, and increasing the protection effect on the material.

[0056] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An atmosphere-protected material delivery system, characterized by: The first protective shell, the second protective shell, the material conveying machine and the gas feeding device, the second protective shell forms a second protective atmosphere space, the material conveying machine is arranged in the second protective shell and located in the second protective atmosphere space; The first protective shell covers the material conveying machine and forms a first protective atmosphere space in the second protective atmosphere space, the material conveying machine includes a material conveying position for conveying materials, the material conveying position is located in the first protective atmosphere space, the gas feeding device at least communicates with the first protective atmosphere space and feeds protective gas into the first protective atmosphere space; There is a movement gap between the first protective shell and the material conveying machine, the first protective atmosphere space communicates with the second protective atmosphere space through the movement gap, and a movement sealing structure is arranged in the movement gap; The movement sealing structure includes a first sealing plate and a second sealing plate, the first sealing plate is arranged on the material conveying machine, the second sealing plate is arranged on the first protective shell, a gap between the first sealing plate and the first protective shell is a first gap, a gap between the second sealing plate and the material conveying machine is a second gap, the first sealing plate and the second sealing plate are arranged in a staggered manner, in the communication direction of the movement gap, the first sealing plate blocks the second gap, and the second sealing plate blocks the first gap.

2. The atmosphere-protected material delivery system of claim 1, wherein: The gas feeding direction of the gas feeding device is opposite to the material conveying direction of the material conveying machine.

3. The atmosphere-protected material delivery system of claim 1, wherein: The material conveying machine includes a conveying chain and a hopper arranged on the conveying chain, the first protective shell forms the first protective atmosphere space along the length direction of the conveying chain, and the conveying chain drives the hopper to move in the length direction of the conveying chain in the first protective atmosphere space.

4. The atmosphere-protected material delivery system of claim 3, wherein: The hopper is a plurality of hoppers arranged in sequence along the length direction of the conveying chain.

5. The system of claim 3, wherein: The material conveying machine further includes a rack, and a plurality of carrier rollers are arranged on the rack along the length direction of the conveying chain, and the hopper slides on the carrier rollers.

6. The system of claim 3, wherein: The material conveying machine further includes a buffer bin for feeding materials to the material conveying machine and a discharge port for discharging materials, the buffer bin is arranged above the material conveying machine corresponding to the head end of the conveying chain, and the discharge port is arranged below the material conveying machine corresponding to the tail end of the conveying chain.

7. The system of claim 1, wherein: The first protective shell is provided with a heat insulation layer.

8. An atmosphere-protected material delivery system according to any of claims 1 to 7, characterized in that: The material conveying system with atmosphere protection further includes a ventilation device and a collection device, the ventilation device and the collection device respectively communicate with the second protective atmosphere space, the ventilation device is used for ventilating the second protective atmosphere space, and the collection device is used for collecting protective gas in the second protective atmosphere space.

9. An atmosphere-protected material delivery system as defined in claim 8, wherein: The ventilation direction of the ventilation device is the same as the collection direction of the collection device.

10. The system of claim 8, wherein: The ventilation device and the collection device are respectively arranged on two sides of the second protective atmosphere space.

11. The atmosphere-protected material delivery system of claim 8, wherein: The ventilation device and the collection device are also respectively in communication with the first protective atmosphere space, the ventilation device is used for ventilating the first protective atmosphere space and the second protective atmosphere space, and the collection device is used for collecting the protective gas in the first protective atmosphere space and the second protective atmosphere space.

12. A method of inflating an atmosphere protected material delivery system, characterized by: The material conveying system with atmosphere protection is used to fill the protective gas into the first protective shell through the gas feeding device, to form the protective atmosphere in the first protective atmosphere space, and to make the protective gas in the first protective shell escape from the first protective shell and enter the second protective shell to form the protective atmosphere in the second protective atmosphere space. Alternatively, the gas feeding device is also in communication with the second protective atmosphere space, the protective gas is filled into the first protective shell and the second protective shell through the gas feeding device, and the protective atmosphere is formed in the first protective atmosphere space and the second protective atmosphere space respectively.

13. A method of exchanging atmosphere of a material conveying system with atmosphere protection, characterized in that: The material conveying system with atmosphere protection is used to collect the protective gas in the second protective atmosphere space through the collection device when the ventilation device is used to ventilate the second protective atmosphere space.

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