JPH067064Y2 - Swirl injection nozzle - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application The present invention is a swirl that jets a jet flow as a swirl jet when jetting the geohardening material, fresh water, etc. It relates to a jet nozzle.

(B) Conventional technology The injection nozzle provided in the injection pipe was conventionally a simple through-hole, but the nozzle is used to swirl the injection jet for the purpose of strengthening the injection force and giving stirring power to the jet. It has been considered to engrave a spiral groove on the inner wall.

(C) Problems to be solved by the invention The method of engraving the spiral groove on the inner wall of the injection nozzle does not provide the expected effect due to the relationship between the nozzle length and the jet pressure, so that the nozzle is covered by the wall thickness of the injection pipe. It has been considered to use the body length of the tip for structural processing of the nozzle. This method is also passive, and there is no certainty, and the certainty cannot be ensured except to install a separate structure in the hole. However, since the hole of the injection pipe is straight, it is difficult to install a separate component that can withstand the injection pressure in the nozzle hole. In particular, it is not possible to process the injection jet to generate a spiral jet. Despite being technically extremely beneficial, there was no way to do this.

(D) Means for Solving the Problems The present invention uses the tapered structure for the locking means of the fitting structure by forming the rear of the nozzle hole into a tapered hole that expands rearward, or A complete spiral jet nozzle can be obtained by fitting a spiral ring that forcibly swirls the jet by mounting a flange ring that engages the inner nozzle hole edge at the rear end of the fitting structure in the nozzle hole. It was made.

(E) Action The high-pressure injection material sent into the injection pipe presses the spiral plate fitted in the nozzle hole strongly against the wall from the rear, acts as the hole locking force of the spiral plate and forces a stable turning force. To give a jet flow.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the invention in which the rear of the nozzle hole is formed into a tapered hole that expands rearward, 1 is the nozzle hole,
2 is a tapered hole. Although it may be directly bored in the wall of the injection pipe, it is extremely advantageous in processing if it is constructed as a nozzle tip. 3 is a spiral plate, which is twisted and rotated based on the base end 31 of the plate body matching the shape of the tapered hole as shown in FIG. Then, it is fitted just by inserting it into the tapered hole, and then fixed and strengthened by fluid pressure. The material of the spiral plate is a steel plate shown in FIG. 4, which illustrates a deforming nozzle. The spiral plate and the like have some differences in shape, but in principle, they are exactly the same. FIG. 5 shows a device in which a flange ring is provided on the spiral plate, and it can be used as it is as a straight hole without providing a tapered hole. Of course, if a tapered hole is provided and fitted into this, the stability is further enhanced. In this case, the base end 31 of the plate body is fixed to the center of the ring 32, and a required twist is applied across the plate 32. Further, by swirling the flow groove 4 along the injection direction at the center of the plate surface of the spiral plate 3, the swirling force can be enhanced. The material of the spiral plate is not only the rope plate, but if reinforced plastic is used, it can be easily molded.

(G) Effect of the device With the structure of the present invention as described above, it is possible to generate a powerful swirling screw jet just by inserting the spiral plate into the nozzle hole, and many applications are possible for the hardening material injection method. It is the one.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view showing the relationship between a nozzle hole and a spiral plate, FIG. 2 is a sectional view of the nozzle hole showing the fitted state of the spiral plate, and FIG. 3 is a taper. FIG. 4 is a rear view of the spiral plate viewed from the hole side, FIG. 4 is a perspective view illustrating the case of a deformed nozzle hole, and FIG. 5 is a perspective view of an embodiment provided with a flange ring. 1-Nozzle Hole, 2-Taper Hole 3-Spiral Plate, 31-Base End, 32- Ring 4-Flow Groove

Claims (3)

[Scope of utility model registration request] 1. A swirling jet nozzle in which a rear portion of a nozzle hole is formed into a tapered hole that widens rearward, and a spiral plate is fitted from the rear portion of the tapered hole. 2. A swirling jet nozzle formed by fitting a spiral plate having a flange ring, which is engaged with the edge of the nozzle hole from the rear of the nozzle hole, attached to the rear portion. 3. A swirl jet nozzle according to claim 1 or 2, wherein a flow groove is formed in the center of the spiral plate along the jet direction.