JPH0456752U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a flow diagram of one embodiment of the present invention, FIG. 2 is a sectional view of one embodiment of the surface treatment apparatus of the present invention, and FIG. 3 is an enlarged longitudinal section of the first embodiment of the needle valve portion of the present invention. 4 is a perspective view of FIG. 3, FIG. 5 is an enlarged vertical sectional view of a second embodiment of the needle valve portion of the present invention, and FIG. 6 is a third embodiment of the needle valve portion of the present invention. FIG. 7 is an enlarged longitudinal sectional view of a fourth embodiment of the needle valve portion of the present invention, and FIG. 8 is a flow diagram of a conventional example. A is the surface treatment device, B is the device body, C is the pass line, 1 is the jet jet expansion space, 2 is the material to be surface treated, 3 is the introduction hole, 4 is the outlet hole, 5 is the jet jet passage hole, 6 is the guide In the middle cylinder, 7 is a fluid, 8 is a fluid jet hole, 9 is a discharge hole, θ is an angle between the fluid jet hole and the introduction hole or the outlet hole, and α is the cutting angle of the tip of the needle valve.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A jet jet expansion space is provided inside the device body, an introduction hole and an outlet hole that are opened on the outer surface of the device body are provided in the device body, and the jet jet expansion space and the introduction hole are provided in the device body. A jet jet passage hole is formed between the jet jet expansion space and the introduction hole to constitute a pass line that penetrates the device body, and the fluid is jetted toward the jet jet expansion space through the jet jet passage hole. A fluid ejection hole is formed at the boundary between the jet ejection passage hole and the introduction hole and at the boundary between the jet ejection passage hole and the outlet hole, respectively, so that a part of the opening portion of the fluid ejection hole to the boundary is formed in the opening portion. A surface treatment device characterized by having a discharge hole formed in the device body, which is wider than the rest of the device, and which opens from the jet ejection and expansion space to the outer surface of the device body. (2) A mortar-shaped hole bottom that communicates the fluid jet hole with the jet jet passage hole, and a needle valve that is inserted into the hole bottom and has an introduction hole or an outlet hole that communicates with the jet jet passage hole. The tip of the needle valve is cut off so as to be inclined with respect to the center line, so that a part of the opening part of the fluid jet hole is formed wider than the opening width of the remaining part of the opening part. The surface treatment apparatus according to claim 1 of the utility model registration claim, characterized in that: (3) A mortar-shaped hole bottom that communicates the fluid jet hole with the jet jet passage hole, and a needle valve that is inserted into the hole bottom and has an introduction hole or an outlet hole that communicates with the jet jet passage hole. Claims for registration of a utility model, characterized in that a part of the opening of the fluid jet hole is formed wider than the rest of the opening by cutting off the tip of the needle valve in steps. The surface treatment device according to item 1. (4) The fluid jet hole is composed of a mortar-shaped hole bottom that communicates with the jet jet passage hole, and a needle valve that is inserted into the hole bottom and has an introduction hole or an outlet hole that communicates with the jet jet passage hole. However, the tip of the needle valve is formed in an uneven shape so that a part of the opening part of the fluid jet hole is formed wider than the rest of the opening part. The surface treatment device according to item 1. (5) The fluid jet hole is composed of a mortar-shaped hole bottom that communicates with the jet jet passage hole, and a needle valve that is inserted into the hole bottom and has an introduction hole or an outlet hole that communicates with the jet jet passage hole. However, a part of the opening edge of the hole bottom is shaved off so that a part of the opening part of the fluid jet hole is formed wider than the rest of the opening part. The surface treatment device according to item 1.