JPH0454958Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a double-walled tank with a nozzle used for processing liquid foods such as milk.

(Prior Art) Conventionally, this type of tank has been constructed such that both the incisal edge of the mounting hole 1 and the incisal edge of the penetration hole 3 are directly welded to the nozzle pipe 7, as shown in FIG.

(Problem to be solved by the invention) In the tank described in the above conventional technology, when a temperature difference occurs between the inner tank 2 and the outer tank 4, the inner tank 2 and the outer tank 4
Stress on the inner tank 2 and stress on the outer tank 4 are generated in different magnitudes in the nozzle pipe 7 passing through the nozzle pipe 7 .

The generation of stresses of different magnitudes in the nozzle pipe 7 in this way is undesirable because it causes deformation or cracks in the nozzle pipe 7, the inner tank 2, or the outer tank 4.

The purpose of the present invention is to provide a new double-wall structure tank with a nozzle that has a loose space between the outer tank and the nozzle pipe to prevent stress of different magnitudes from occurring in the nozzle pipe. It is.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an inner tank 2 having a nozzle pipe attachment hole 1, an outer tank 4 having a nozzle pipe penetration hole 3, The entire circumference of the proximal end 5 is welded to the incisal edge of the hole 1, and the distal end is welded to the penetrating hole 3.
In a double wall structure tank with a nozzle having a nozzle pipe 7 protruding from the outside through the penetration hole 3,
The diameter of the penetration hole 3 is made larger than the outer diameter of the nozzle pipe 7 to form a gap 9, and a plate consisting of a bottom wall 13 and an outer peripheral wall 14 is formed on the outer surface of the incisal edge of the penetration hole 3. A recess 12 that opens outward and surrounds the nozzle pipe 7 with a shaped auxiliary member 11 is provided, and this recess 12 is densely filled with a type of caulking agent 10 that solidifies in an elastic state. be.

(Function) Since the present invention is as described above, when the nozzle pipe 7 is displaced due to stress between the inner tank 2 and the nozzle pipe 7, the caulking agent 10 absorbs the displacement. Further, the displacement caused by thermal expansion in the outer tank 4 is absorbed by the caulking agent 10, and no stress is generated between the outer tank and the nozzle pipe.

(Effect of the invention) Since the present invention has the above-described configuration, stress of different magnitudes is not generated in the nozzle pipe due to the above-mentioned looseness, and the nozzle pipe 7 and the inner tank 2
Further, the outer tank 4 is not deformed or cracked, and the airtightness is maintained even if there is a temperature difference between the inner tank 2 and the outer tank 4.

(Embodiment) In the embodiment of the present application shown in FIG. The thickness should be larger than the displacement difference caused by the temperature difference between the inner tank 2 and the outer tank 4, and the nozzle pipe 7 should be attached to the incisal edge of the mounting hole 1.
The entire circumference of the base end 5 of the nozzle pipe 7 is directly connected by welding, and the tip 6 of the nozzle pipe 7 is made to protrude outside the penetration hole 3.
In addition, a bottom wall portion 13 and an outer peripheral wall portion 14 are provided at the incisal edge of the penetration hole 3.
A concavity 12 that surrounds the nozzle pipe 7 and is open toward the outside is formed using a dish-shaped auxiliary member 11 consisting of a silicone caulking agent 1.
The gap 9 between the incisal edge 8 of the penetration hole 3 and the outer circumferential surface of the nozzle pipe 7 is closed by tightly packing the holes.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of a double-walled tank with a nozzle according to the present invention, and is a sectional view showing the main parts, and FIG. 2 shows a conventional example, and is a sectional view showing the main parts. 1... Mounting hole, 2... Inner tank, 3... Penetration hole, 4
...Outer tank, 5...Proximal end, 6...Distal end, 7...
Nozzle pipe, 8...Incisal edge, 9...Between, 10...Caulking agent, 11...Auxiliary member, 12...Intaglio,
13...Bottom wall part, 14...Outer peripheral wall part.

Claims (1)

[Scope of utility model registration request] An inner tank 2 has a nozzle pipe mounting hole 1, an outer tank 4 has a nozzle pipe penetration hole 3, and the entire circumference of the base end 5 is welded to the incisal edge of the mounting hole 1, and the distal end is welded to the incisal edge of the mounting hole 1. In a tank with a double wall structure with a nozzle having a nozzle pipe 7 protruding from the outside of the penetration hole 3 through the penetration hole 3, the diameter of the penetration hole 3 is set to be larger than the outer diameter of the nozzle pipe 7. A bottom wall 13 and an outer peripheral wall 1 are formed on the outer surface of the incisal edge of the penetration hole 3.
A concavity 12 that is open toward the outside and surrounds the nozzle pipe 7 is provided with a dish-shaped auxiliary member 11 consisting of 4, and a caulking agent 10 that solidifies in an elastic state is sealed in this concavity 12. A double wall structure tank with a nozzle that is characterized by being filled with.