Powder sealing packaging and leakage preventing device

Abstract

The invention relates to a powder sealing packaging and leakage preventing device which comprises a powder barrel, a flexible sealing cavity and a cover turning mechanism, one end of the powder barrel is used for being connected with a powder feeding opening, and the other end of the powder barrel is used for conveying powder discharged from the powder feeding opening into a packaging bag; the flexible sealing cavity comprises a spacing layer and an expansion layer, the spacing layer is arranged on the outer side of the powder barrel in a sleeving mode, a gap is formed between the spacing layer and the outer side wall of the powder barrel, the expansion layer is connected to the outer side of the spacing layer, and the expansion layer expands to open a packaging bag opening arranged outside the expansion layer in a sleeving mode through expansion, so that a gap is formed between the bag opening and the powder barrel; the cover turning mechanism is arranged at the other end of the powder barrel and used for opening or blocking the other end of the powder barrel. According to the powder sealed packaging and leakage-proof device, the gap is formed between the bag opening of the packaging bag and the powder barrel, so that powder cannot seep from the bag opening, and the device belongs to the technical field of powder packaging.

Description

Technical Field

[0001] This invention relates to the field of powder packaging technology, specifically to a powder sealing packaging and leak-proof device. Background Technology

[0002] Currently, in the powder packaging process, the packaging bag and the material inlet are sealed in the following ways: 1. Cable tie: The packaging bag and the material inlet are tightly sealed with a cable tie. 2. Hoop: The packaging bag and the material inlet are tightly sealed with a metal hoop. These sealing methods create gaps between the packaging bag opening and the material inlet, allowing powder to seep out.

[0003] Poor sealing around the powder packaging channel, with gaps or installation components, can easily allow other dust to get in or cause screws or other fasteners to fall into the powder, resulting in poor packaging quality.

[0004] Because there is residual powder inside the discharge cylinder, when the bag is full and removed, this powder will fall and cause pollution to the packaging site. Summary of the Invention

[0005] To address the technical problems existing in the prior art, the purpose of this invention is to provide a powder sealing packaging and leak-proof device that solves the problem of powder leaking out from the gap between the packaging bag and the powder cylinder during the current powder packaging process by ensuring that the opening of the packaging bag does not directly contact the powder cylinder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A powder sealing packaging and leak-proof device includes a powder cylinder, a flexible sealing cavity, and a flip-top mechanism. One end of the powder cylinder is connected to the powder inlet, and the other end is used to convey the powder discharged from the inlet into a packaging bag. The flexible sealing cavity includes a spacer layer and an expansion layer. The spacer layer is sleeved on the outside of the powder cylinder, and there is a gap between the spacer layer and the outer wall of the powder cylinder. The expansion layer is connected to the outside of the spacer layer. The expansion layer expands and opens the bag opening of the packaging bag sleeved on the expansion layer, so that a gap is formed between the bag opening and the powder cylinder. The flip-top mechanism is located at the other end of the powder cylinder to open or seal the other end of the powder cylinder.

[0007] As a preferred embodiment, the spacer layer has a cubic or cylindrical structure, is hollow inside, and has openings at both ends; the inner diameter or width of the spacer layer is larger than the outer diameter or width of the powder cylinder, and the other end of the powder cylinder is provided with a limiting end block, with the bottom end of the spacer layer contacting the top end of the limiting end block.

[0008] As a preferred embodiment, the expansion layer includes an expansion airbag, an upper pressure plate, a lower pressure plate, an air supply interface, a first solenoid valve, and a venting interface. The upper pressure plate is connected to the top of the spacer layer. One end of the expansion airbag is embedded between the upper pressure plate and the spacer layer. The lower pressure plate is connected to the bottom of the spacer layer. The other end of the expansion airbag is embedded between the lower pressure plate and the spacer layer. The expansion airbag is provided with an air inlet and an air outlet, which are respectively connected to the air supply interface and the venting interface. The air supply interface is used to connect to an air source. The first solenoid valve is located at the venting interface, and a second solenoid valve is located at the air supply interface. When the expansion airbag is in an inflated state, it expands the opening of the packaging bag that is fitted outside the expansion layer.

[0009] As a preferred embodiment, the flip-top mechanism includes a first opening plate and a second opening plate, both hinged to the other end of the powder cylinder and symmetrically distributed at the other end of the powder cylinder. The first and second opening plates are driven by a drive assembly. When the drive assembly drives the first and second opening plates to the same horizontal plane, a sealing plate is formed, which is adapted to the other end of the powder cylinder, thus closing the other end of the powder cylinder. When the drive assembly drives the first and second opening plates to a different horizontal plane, the other end of the powder cylinder opens, allowing powder to be conveyed into the packaging bag.

[0010] As a preferred option, The drive assembly includes two drive components, which are respectively connected to the first opening and closing plate and the second opening and closing plate. The drive assembly may include a drive component and a transmission assembly; the drive component is connected to the transmission assembly, and the transmission assembly is connected to the first opening and closing plate and the second opening and closing plate.

[0011] As a preferred embodiment, one end of the powder cylinder is connected to a telescopic hose, which is used to connect to the powder inlet.

[0012] As a preferred embodiment, a first sealing element is provided between one end of the powder cylinder and the upper pressure plate.

[0013] As a preferred option, a second sealing element is provided between the powder cylinder and the lower pressure plate.

[0014] In summary, the present invention has the following advantages: The powder sealing packaging and leak-proof device of the present invention has a gap between the spacer layer and the outer wall of the powder cylinder. The packaging bag does not come into direct contact with the powder cylinder, and the powder is conveyed directly from the powder cylinder into the packaging bag, thus ensuring that the powder will not leak from the bag opening. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a powder sealing and leak-proof packaging device clamping a packaging bag.

[0016] Figure 2 This is a schematic diagram of a powder sealing packaging and leak-proof device.

[0017] Among them, 1 is a telescopic hose, 2 is a powder cylinder, 3 is an air supply interface, 4 is a spacer layer, 5 is a flexible sealing cavity, 6 is an expansion airbag, 7 is a flip-top mechanism, 8 is a first sealing element, 9 is a second sealing element, 10 is a venting interface, 11 is an upper pressure plate, 12 is a material discharge port, 13 is a lower pressure plate, 14 is a packaging bag, 15 is a cylinder, and 16 is a hinge. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to specific embodiments.

[0019] Example 1 like Figure 1-2 As shown, this embodiment provides a powder sealing packaging and leak-proof device, including a powder cylinder 2, a flexible sealing cavity 5, and a flip-top mechanism 7. One end of the powder cylinder 2 is used to connect to the powder inlet, and the other end of the powder cylinder 2 is used to convey the powder discharged from the inlet into the packaging bag 14. The flexible sealing cavity 5 includes a spacer layer 4 and an expansion layer. The spacer layer 4 is sleeved on the outside of the powder cylinder 2, and there is a gap between the spacer layer 4 and the outer wall of the powder cylinder 2. The expansion layer is connected to the outside of the spacer layer 4. The expansion layer expands and opens the bag opening of the packaging bag 14 sleeved on the outside of the expansion layer, so that a gap is formed between the bag opening and the powder cylinder 2. The flip-top mechanism 7 is provided at the other end of the powder cylinder 2 to open or seal the other end of the powder cylinder 2. The other end of the powder cylinder 2 is the powder discharge port 12. Due to the gap between the spacer layer 4 and the outer wall of the powder cylinder 2, the packaging bag 14 does not directly contact the powder cylinder 2. Instead, the powder discharge port 12 extends into the packaging bag 14, and the powder is conveyed directly from the powder cylinder 2 into the packaging bag 14. Therefore, it can be ensured that the powder will not leak out of the bag opening.

[0020] The spacer layer 4 has a cubic or cylindrical structure, is hollow inside, and has openings at both ends. The inner diameter or width of the spacer layer 4 is larger than the outer diameter or width of the powder cylinder 2. A limiting end block is provided at the other end of the powder cylinder 2, and the bottom end of the spacer layer 4 contacts the top end of the limiting end block. Specifically, in this embodiment, the spacer layer 4 has a cylindrical structure, and the size of the openings at both ends of the spacer layer 4 is adapted to the outer diameter of the powder cylinder 2. The size of the openings at both ends of the spacer layer 4 is smaller than the outer diameter of the spacer layer 4, so that the packaging bag 14 does not directly contact the powder cylinder 2, and the powder is conveyed directly from the powder cylinder 2 into the packaging bag 14, thus ensuring that the powder will not leak from the bag opening.

[0021] The bottom of the other end of the powder cylinder 2 is connected to a limiting end block, which prevents the flexible sealing cavity 55 from falling off the powder cylinder 2.

[0022] The expansion layer includes an expansion airbag 6, an upper pressure plate 11, a lower pressure plate 13, an air supply port 3, a first solenoid valve, and a vent port 10. The upper pressure plate 11 is connected to the top of the spacer layer 4. One end of the expansion airbag 6 is embedded between the upper pressure plate 11 and the spacer layer 4. The lower pressure plate 13 is connected to the bottom of the spacer layer 4. The other end of the expansion airbag 6 is embedded between the lower pressure plate 13 and the spacer layer 4. The expansion airbag 6 is provided with an air inlet and an air outlet, which are respectively connected to the air supply port 3 and the vent port 10. The air supply port 3 is used to connect to an air source. The first solenoid valve is located at the vent port 10, and a second solenoid valve is located at the air supply port 3. When the expansion airbag 6 is in an inflated state, the expansion airbag 6 opens the opening of the packaging bag 14 that is fitted outside the expansion layer.

[0023] Specifically, after the packaging bag 14 is placed on top, the first solenoid valve controls the venting port 10 to close, and compressed air is input into the air supply port 3. The expansion bladder 6 slowly inflates and finally tightens the packaging bag 14, ensuring a tight seal between the packaging bag 14 and the bladder wall. Additionally, a certain distance is maintained between the spacer layer 4 and the powder cylinder 2 to prevent the powder from contacting the packaging bag 14, thus preventing powder leakage from the bag opening. When the packaging bag 14 is full and needs to be removed, the second solenoid valve controls the air supply port 3 to close, and the venting port opens to release gas, causing the expansion bladder 6 to contract, separating the packaging bag 14 from the bladder.

[0024] The flip-top mechanism 7 includes a first opening and closing plate and a second opening and closing plate. Both the first opening and closing plate and the second opening and closing plate are hinged to the other end of the powder cylinder 2, and the first opening and closing plate and the second opening and closing plate are symmetrically distributed on the other end of the powder cylinder 2. The first opening and closing plate and the second opening and closing plate are driven by a drive assembly. When the drive assembly drives the first opening and closing plate and the second opening and closing plate to the same horizontal plane, a sealing plate is formed. The sealing plate is adapted to the other end port of the powder cylinder 2, so that the other end of the powder cylinder 2 is closed. When the drive assembly drives the first opening and closing plate and the second opening and closing plate to a different horizontal plane, the other end of the powder cylinder 2 is opened, and the powder can be conveyed into the packaging bag 14.

[0025] The drive assembly includes two drive components, which are respectively connected to the first opening and closing plate and the second opening and closing plate. The drive assembly may include a drive component and a transmission assembly; the drive component is connected to the transmission assembly, and the transmission assembly is connected to the first opening and closing plate and the second opening and closing plate.

[0026] For example, the driving component is a cylinder 15, and there are two driving components. The piston rods of the two cylinders 15 are respectively hinged to the first opening and closing plate and the second opening and closing plate via hinges 16. By extending and retracting the two cylinders 15, the first opening and closing plate and the second opening and closing plate open or close the powder cylinder 2. The hinge 16 can be regarded as a transmission component, or it can be regarded as that there is no transmission component in this embodiment, and only the driving component directly drives it. It should be noted that since there is a gap between the powder cylinder 2 and the spacer layer 4, the cylinder 15 can be installed between the powder cylinder 2 and the spacer layer 4, and a corresponding through hole is opened in the upper pressure plate 11 for the air pipe of the cylinder 15 to pass through.

[0027] In other embodiments, a gear set can be driven by a motor, and the gear set can drive the first opening and closing plate and the second opening and closing plate.

[0028] Specifically, both the first and second opening plates are composed of semi-circular, rotatable blades, and the flip-top mechanism 7 has only two states: open and closed. When a new packaging bag 14 needs to be filled, the flip-top mechanism 7 opens the other end of the powder cylinder 2 to allow filling. When the packaging bag 14 is full and needs to be removed, the flip-top mechanism 7 closes and seals the other end of the powder cylinder 2 to prevent residual powder from falling out and to ensure the site is clean and uncontaminated.

[0029] One end of the powder cylinder 2 is connected to a telescopic hose 11, which is used to connect to the powder inlet.

[0030] A first sealing element 8 is provided between one end of the powder cylinder 2 and the upper pressure plate 11.

[0031] A second sealing element 9 is provided between the powder cylinder 2 and the lower pressure plate 13.

[0032] Both the first seal 8 and the second seal 9 are existing sealing rings.

[0033] It should be noted that the inner wall of powder cylinder 2 is smooth, and the powder channel at the connection point is ultimately sealed. Sealing elements are installed at the upper and lower connections of powder cylinder 2, and bolts are tightened around the outer perimeter of powder cylinder 2 to prevent powder leakage. There are no internal structures on the wall of powder cylinder 2 to prevent the risk of foreign matter mixing into the powder, thus ensuring the packaging quality of the powder.

[0034] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A powder sealing packaging and leak-proof device, characterized in that: The device includes a powder cylinder, a flexible sealing cavity, and a flip-top mechanism. One end of the powder cylinder is connected to the powder inlet, and the other end is used to convey the powder discharged from the inlet into a packaging bag. The flexible sealing cavity includes a spacer layer and an expansion layer. The spacer layer is sleeved on the outside of the powder cylinder, and there is a gap between the spacer layer and the outer wall of the powder cylinder. The expansion layer is connected to the outside of the spacer layer. The expansion layer expands and opens the bag opening of the packaging bag sleeved on the outside of the expansion layer, so that a gap is formed between the bag opening and the powder cylinder. The flip-top mechanism is located at the other end of the powder cylinder and is used to open or seal the other end of the powder cylinder.

2. The powder sealing packaging and leak-proof device according to claim 1, characterized in that: The spacer layer has a cubic or cylindrical structure, is hollow inside, and is open at both ends; the inner diameter or width of the spacer layer is larger than the outer diameter or width of the powder cylinder, and the other end of the powder cylinder is provided with a limiting end block, with the bottom end of the spacer layer contacting the top end of the limiting end block.

3. The powder sealing packaging and leak-proof device according to claim 1, characterized in that: The expansion layer includes an expansion airbag, an upper pressure plate, a lower pressure plate, an air supply interface, a first solenoid valve, and a venting interface. The upper pressure plate is connected to the top of the spacer layer. One end of the expansion airbag is embedded between the upper pressure plate and the spacer layer. The lower pressure plate is connected to the bottom of the spacer layer. The other end of the expansion airbag is embedded between the lower pressure plate and the spacer layer. The expansion airbag is provided with an air inlet and an air outlet, which are respectively connected to the air supply interface and the venting interface. The air supply interface is used to connect to an air source. The first solenoid valve is located at the venting interface, and a second solenoid valve is located at the air supply interface. When the expansion airbag is in an inflated state, it expands the opening of the packaging bag that is fitted outside the expansion layer.

4. The powder sealing packaging and leak-proof device according to claim 1, characterized in that: The flip-top mechanism includes a first opening plate and a second opening plate, both of which are hinged to the other end of the powder cylinder. The first and second opening plates are symmetrically distributed on the other end of the powder cylinder. The first and second opening plates are driven by a drive assembly. When the drive assembly drives the first and second opening plates to the same horizontal plane, a sealing plate is formed. The sealing plate is adapted to the other end port of the powder cylinder, so that the other end of the powder cylinder is closed. When the drive assembly drives the first and second opening plates to a different horizontal plane, the other end of the powder cylinder is opened, which can deliver the powder into the packaging bag.

5. The powder sealing packaging and leak-proof device according to claim 4, characterized in that: The drive assembly includes two drive components, which are respectively connected to the first opening and closing plate and the second opening and closing plate. The drive assembly may include a drive component and a transmission assembly; the drive component is connected to the transmission assembly, and the transmission assembly is connected to the first opening and closing plate and the second opening and closing plate.

6. The powder sealing packaging and leak-proof device according to claim 1, characterized in that: One end of the powder cylinder is connected to a telescopic hose, which is used to connect to the powder inlet.

7. The powder sealing packaging and leak-proof device according to claim 3, characterized in that: A first sealing element is provided between one end of the powder cylinder and the upper pressure plate.

8. The powder sealing packaging and leak-proof device according to claim 3, characterized in that: A second sealing element is provided between the powder cylinder and the lower pressure plate.

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