Two-end-through vacuum heat-insulated container outer tube sealing structure and sealing method

Abstract

A two-end-through vacuum heat-insulated container outer tube sealing structure includes a vacuum heat-insulated container outer tube, where a shoulder part of the vacuum heat-insulated container outer tube is provided with a plane; a vacuum cavity is formed in the plane; a vacuum hole for vacuum pumping is formed in the vacuum cavity; the vacuum cavity is filled with a sealing material; a side surface of the plane of the shoulder part is provided with a circular step from top to bottom; a shielding cover is subjected to primary welding on the circular step; a weld bead of the welding is removed by polishing; the shielding cover and the circular step are in gap-free fit; the other end of the shielding cover is subjected to secondary welding with a mouth part of a bottle body; and the weld bead of the welding is removed by sanding the mouth.

Claims

1. A two-end-through vacuum heat-insulated container outer tube sealing structure, comprising: an outer tube of a vacuum heat-insulated container; a shoulder part of the outer tube extending to a plane; a vacuum cavity formed in the plane, a vacuum hole for vacuum pumping being formed in the vacuum cavity, and the vacuum cavity being filled with a sealing material; a side surface extending from the plane of the shoulder part to a circular step from top to bottom; and a shielding cover, a first end of the shielding cover including tea primary weld eat the circular step, a first weld bead formed by the primary weld being removed by polishing, the shielding cover and the circular step being in gap-free fit and a second end of the shielding cover including a secondary weld with a mouth part of a bottle body, a second weld bead of the secondary weld being removed by sanding the mouth part.

2. The two-end-through vacuum heat-insulated container outer tube sealing structure according to claim 1, wherein the shielding cover and the outer tube of the heat-insulated container are made of stainless steel.

3. The two-end-through vacuum heat-insulated container outer tube sealing structure according to claim 1, wherein the primary weld for the first end of the shielding cover and the circular step is laser welded.

4. The two-end-through vacuum heat-insulated container outer tube sealing structure according to claim 1, wherein the secondary weld for the second end of the shielding cover and the mouth part of the container is laser welded or argon arc welded.

5. A method for sealing the two-end-through vacuum heat-insulated container outer tube sealing structure as recited in claim 1, the method comprising the following steps: step I, placing the first end of the shielding cover on the step at a bottom of the side surface of the shoulder part of the vacuum heat-insulated container, and laser welding and fixing the primary weld; step II, laser welding or mouth welding the secondary weld at the second end of the shielding cover to the mouth part of the vacuum heat-insulated container; step III, removing the first weld bead generated by laser welding in step I by polishing; and step IV, removing the second weld bead generated by laser welding or argon arc welding in step II by sanding the mouth.

6. A method for sealing the two-end-through vacuum heat-insulated container outer tube sealing structure as recited in claim 2, the method comprising the following steps: step I, placing the first end of the shielding cover on the step at a bottom of the side surface of the shoulder part of the vacuum heat-insulated container, and laser welding and fixing the primary weld; step II, laser welding or mouth welding the secondary weld at the second end of the shielding cover to the mouth part of the vacuum heat-insulated container; step III, removing the first weld bead generated by laser welding in step I by polishing; and step IV, removing the second weld bead generated by laser welding or argon arc welding in step II by sanding the mouth.

7. A method for sealing the two-end-through vacuum heat-insulated container outer tube sealing structure as recited in claim 3, the method comprising the following steps: step I, placing the first end of the shielding cover on the step at a bottom of the side surface of the shoulder part of the vacuum heat-insulated container, and laser welding and fixing the primary weld; step II, laser welding or mouth welding the secondary weld at the second end of the shielding cover to the mouth part of the vacuum heat-insulated container; step III, removing the first weld bead generated by laser welding in step I by polishing; and step IV, removing the second weld bead generated by laser welding or argon arc welding in step II by sanding the mouth.

8. A method for sealing the two-end-through vacuum heat-insulated container outer tube sealing structure as recited in claim 4, the method comprising the following steps: step I, placing the first end of the shielding cover on the step at a bottom of the side surface of the shoulder part of the vacuum heat-insulated container, and laser welding and fixing the primary weld; step II, laser welding or mouth welding the secondary weld at the second end of the shielding cover to the mouth part of the vacuum heat-insulated container; step III, removing the first weld bead generated by laser welding in step I by polishing; and step IV, removing the second weld bead generated by laser welding or argon arc welding in step II by sanding the mouth.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic structural diagram of the present invention.

(2) FIG. 2 is a schematic structural diagram of a vacuum heat-insulated container.

(3) In the drawings, 1: container mouth part; 2: secondary welding; 3: shielding cover; 4: outer tube; 5: vacuum hole; 6: vacuum cavity; 7: glass consumables; 8: circular step; and 9: primary welding; 10: shoulder part; 11: plane; 12 side surface.

DETAILED DESCRIPTION

(4) A two-end-through vacuum heat-insulated container outer tube sealing structure includes a vacuum heat-insulated container outer tube 4, where a shoulder part 10 of the vacuum heat-insulated container outer tube 4 is provided with a plane 11; a vacuum cavity 6 is formed in the plane 11; a vacuum hole 5 for vacuum pumping is formed in the vacuum cavity 6; the vacuum cavity 6 is filled with a glass sealing material 7; during vacuum processing, the glass sealing material 7 is heated so that the glass sealing material 7 is melted and seals the vacuum hole 5; where a side surface 12 of the plane 11 of the shoulder part 10 is provided with a circular step 8 from top to bottom; a shielding cover 3 is subjected to primary welding 9 on the circular step 8; the shielding cover 3 is fitted at the circular step 8 of the outer tube 4; the shielding cover 3 is fixed on the circular step 8 of the outer tube 4 through primary laser welding; a weld bead of the primary welding 9 is removed by polishing; the shielding cover 3 and the circular step 8 are in gap-free fit; the other end of the shielding cover 3 is subjected to secondary welding with a mouth part of a bottle body; and the weld bead of the welding is removed by sanding the mouth, so that the glass sealing material 7 for sealing cannot be found in the appearance of the vacuum heat-insulated container.

(5) The shielding cover 3 and the circular step 8 are in gap-free fit.

(6) The shielding cover 3 and the heat-insulated container outer tube 4 are made of stainless steel.

(7) The welding for the shielding cover 3 and the circular step 8 is laser welding.

(8) The weld beads of the shielding cover 3 and the circular step 8 are removed by polishing.

(9) The welding for the other end of the shielding cover 3 and the container mouth part 1 is laser welding or argon arc welding.

(10) The weld beads of the other end of the shielding cover 3 and the container mouth part 1 are removed by sanding the mouth.

(11) A two-end-through vacuum heat-insulated container outer tube sealing method includes the sealing structure according to any one of above-recited embodiments and includes the following steps:

(12) step I, placing a shielding cover 3 on a circular step 8 at a side surface 12 of a shoulder part 10 of a vacuum heat-insulated container, and laser welding and fixing;

(13) step II, laser welding or mouth welding the other end of the shielding cover 3 to a mouth part 1 of the vacuum heat-insulated container;

(14) step III, removing a weld bead generated by laser welding in step I by polishing; and

(15) step IV, removing a weld bead generated by laser welding or argon arc welding in step II by sanding the mouth.

(16) The embodiments above are merely used for explaining the creation of the present invention rather than limiting the technical solutions described in the creation of the present invention, and therefore, although the description already explains the creation of the present invention in detail with reference to the embodiments above, a person having ordinary skill in the art should understand that the creation of the present invention can still be modified and equivalently replaced; moreover, the technical solutions and improvements thereof that do not depart from the spirits and scopes of the creation of the present invention should all fall within the claims of the creation of the present invention.