VALVE FOR PRESSURE PACKAGING DEVICE

Claims

1. A valve for a pressure packaging device comprising: a sealing sleeve structure (300) and a valve stem structure (200) mounted inside the sealing sleeve structure (300), wherein a first annular sealing structure (201) on the valve stem structure (200) abuts and interacts with a second annular sealing structure (301) inside the sealing sleeve structure (300), and the first annular sealing structure (201) is located between the second annular sealing structure (301) and a loading opening (204) of the valve stem structure (200).

2. A valve for a pressure packaging device according to claim 1, wherein the first annular sealing structure (201) comprises: an annular sealing rib provided on the valve stem structure (200), and wherein a pressing inclined surface is provided at the point of contact between the annular sealing rib and the second annular sealing structure (301).

3. A valve for a pressure packaging device according to claim 2, wherein the second annular sealing structure (301) comprises: an annular engaging rib formed on the inner wall of the sealing sleeve structure (300), wherein the pressing inclined surface of the annular sealing rib abuts and interacts with the lower surface of the annular engaging rib.

4. A valve for a pressure packaging device according to claim 1, in which the end of the sealing sleeve structure (300) inserted into the interior of the pressure packaging device (400) is provided with an annular sealing part (302) for sealing engagement with the lower surface of the sealing cup structure (100), and the end of the inner wall of the sealing sleeve structure (300) near the annular sealing part (302) is provided with a groove (303) of variable diameter.

5. A valve for a pressure packaging device according to claim 4, in which the variable diameter groove (303) gradually increases from the end remote from the annular sealing portion (302) towards the end close to the annular sealing portion (302), and a plurality of loading holes (204) of the valve stem structure (200) are located inside the variable diameter groove (303).

6. A valve for a pressure packaging device according to claim 5, in which the valve stem structure (200) is provided with a stepped sealing part (202) for abutting and interacting with a side surface of an annular sealing part (302) remote from the sealing cup structure (100), and an internal sealing structure is formed between the upper surface of the stepped sealing part (202) and the lower surface of the annular sealing part (302).

7. A valve for a pressure packaging device according to claim 6, in which the outer end of the upper surface of the stepped sealing portion (202) is provided with an annular transition surface (203), and the annular transition surface (203) interacts with an adhesive guide inclined surface (305) on the lower surface of the annular sealing portion (302) to form an adhesive outlet for dispensing adhesive.

8. A valve for a pressure packaging device according to claim 1, further comprising: a sealing cup structure (100) for connecting to the opening seal of the pressure packaging device (400); wherein a valve stem structure (200) is mounted and connected inside the sealing cup structure (100), and a sealing sleeve structure (300) is mounted between the valve stem structure (200) and the sealing cup structure (100).

9. A valve for a pressure packaging device according to claim 8, in which the sealing cup structure (100) comprises: a sealing cup body, wherein a central mounting hole is provided in the center of the sealing cup body for interaction with and connection with the sealing sleeve structure (300), and on the outer side of the sealing cup body an annular mounting groove is formed for embracing and connecting the inner wall and the outer wall of the opening of the pressure packaging device (400).

10. A valve for a pressure packaging device according to claim 9, in which the annular mounting groove is an open-bottomed, expanding structure formed by a sealing cup body folded from the inside out, and a sealing gasket is installed between the annular mounting groove and the opening of the pressure packaging device (400).