Expansion tool

Abstract

The invention provides an expansion tool, and belongs to the technical field of beverage equipment. The invention solves a problem that how to enable the sealing to be more reliable when a wine outgoing pipe and a pipe connector are fixed in an expanding manner. The tool comprises a drilling rod, wherein the peripheral surface of the tool is conical. The drilling rod is sleeved by a cylindrical connecting sleeve, and a cylindrical wall of the connecting sleeve is provided with a long strip-shaped through channel. The interior of the connecting sleeve is provided with a cylindrical roller pin, and the external diameter of the roller pin is greater than the width of the through groove. The drilling rod can be inserted into the connecting sleeve, and can enable the roller pin to be pressed into the through groove, thereby enabling the roller pin to be bulged from the peripheral surface of the connecting sleeve. The tool is provided with the drilling rod, the connecting sleeve and the roller pin, and the drilling rod is used for driving the roller pin to rotate to form a cylindrical surface movement locus, thereby enabling an outer wall, contacting with the pipe connector, of the wine outgoing pipe to be a cylindrical surface continuously, enabling the expanding fixing of the outer wall of the wine outgoing pipe with the inner wall of the pipe connector to be closer, and enabling the sealing to be more reliable. Meanwhile, the tool employs a roller-pin expansion mode, and the pipe connector is not liable to deform or be expanded during expansion.

Description

technical field [0001] The invention belongs to the technical field of beverage equipment and relates to an expansion tool. Background technique [0002] As fresh beer is accepted by more and more people in China, beer beverage equipment has also been widely used. Among them, a complete set of beer beverage equipment includes wine barrels, wine spears, dispensers, pressure gauges, hoses, draft beer machines, wine towers, wine labels, and beer taps. The beer or beverage is first extracted from the barrel or other container through the wine spear, dispenser, pressure gauge and hose, then cooled by the draft beer machine, then passed through the wine tower wine column and then out of the beer tap, so that it comes out Beer or drinking wine is more fresh and delicious, and is loved by customers. [0003] Wherein, a pipe joint is connected to the wine outlet pipe in the wine tower or the wine column, as shown in the attached manual. Figure 7 As shown, the traditional pipe join...

AI Technical Summary

Problems solved by technology

[0004] However, there are following defects in adopting the above-mentioned expansion vertebral body to expand the wine outlet pipe: since the peripheral surface of the expansion vertebral body in contact with the inner wall of the wine outlet pipe is a conical surface, when the expansion vertebral body is driven to squeeze into the wine outlet pipe, the The nozzle of the wine outlet pipe at the big end first undergoes plastic deformation and tightly fits with the inner wall of the pipe joint. As the expanded vertebral body continues to extend in, the pipe joint is easily squeezed and deformed or even burst; at the same time, if the expanded vertebral body stretches If the injection is not complete, the wine outlet pipe located in the pipe joint cannot reach the expansion outer diameter required by the design, resulting in the outer peripheral surface of the wine outlet pipe in the pipe joint being a tapered surface, so that the nozzle position where the pipe joint contacts the wine outlet pipe has a gap, resulting in wine leakage between the pipe joint and the wine outlet pipe, and the seal is not reliable

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