JPH08218483A - Nozzle for removing foreign matter in pipe - Google Patents

Abstract

PURPOSE: To remove solid foreign matter protruded in a pipe by forming multiple ejection nozzles opened at prescribed intervals in the peripheral direction at the rear section of a nozzle main body with floating/propelling large-diameter ejection nozzles and foreign matter removing small-diameter ejection nozzles. CONSTITUTION: The diameter of floating/propelling large-diameter ejection nozzles 6 is set to the diameter that the high-pressure water can be spouted with the water pressure and water quantity required to float a nozzle main body 1 in a pipe. The diameter of foreign matter removing small-diameter ejection nozzles 7 is set to the diameter that the high-pressure water can be quickly spouted to cut and crush solid foreign matter such as tree roots protruded in the pipe. The hose connection section 3 of the nozzle main body 1 is inserted into a sewage pipe connected to the tip of a hose, the high-pressure water is fed into the nozzle main body 1, the opening sides of the ejection nozzles 7 are pressed to the wall face of the pipe by the high-pressure water spouted from the ejection nozzles 6, the nozzle main body 1 is excited in the forward direction, and the solid foreign matter protruded on the inner face of the pipe is cut and crushed by the high-pressure water spouted from the ejection nozzles 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle for removing foreign substances in a pipe, which jets high-pressure water into the pipe and removes foreign substances in the pipe by the jetting water pressure.

[0002]

2. Description of the Related Art As a means for removing foreign matter inside a pipe such as a sewer pipe, a nozzle is attached to the end of a hose and inserted into the pipe, and high pressure water generated by an ultra-high pressure pump unit is passed through the hose to make the nozzle There is known a method in which high-pressure water is radially ejected from the pipe to remove foreign matter in the pipe by the ejected water pressure.

As the above-mentioned nozzle, a plurality of jet holes having the same diameter are formed in the rear portion of the nozzle body at predetermined intervals in the circumferential direction, and the high pressure water is jetted radially obliquely rearward from the jet holes. Are used. In the nozzle configured as described above, the high pressure water radially ejected from the ejection holes allows the nozzle to obtain buoyancy and propulsive force in the tube, and removes foreign matter in the tube.

[0004]

According to the above-mentioned nozzle, the high-pressure water ejected from each ejection hole opening in the nozzle main body serves as both the buoyancy / propulsion force of the nozzle and the foreign matter removing action. Since the holes have the same diameter, the high-pressure water that is ejected is ejected with a uniform water pressure. As a result, this high-pressure water is propelled while removing deposits in the pipe, but it is extremely difficult to eject high-pressure water that can cut and crush even the solid matter protruding into the pipe. The foreign matter in the pipe that is removed by the nozzle is about the amount of deposits in the pipe, and for example, tree roots, rubber packing, mortar lumps, etc. protruding into the pipe can hardly be removed.

In view of the above points, the present invention provides a nozzle for removing foreign matter in a tube, which is intended to remove not only the deposit accumulated in the tube but also the solid foreign matter protruding into the tube. is there.

[0006]

In order to achieve the above-mentioned object, the present invention is attached to the tip of a hose and radially ejects high-pressure water sent from the hose in the pipe, and the foreign water in the pipe is removed by the jet water pressure. In a nozzle for removing foreign matter in a pipe that removes and obtains propulsion force, a plurality of ejection holes that open at a predetermined interval in the circumferential direction at the rear of the nozzle body are It is composed of and.

It is preferable that, of the plurality of ejection holes that are open in the circumferential direction at the rear portion of the nozzle body, the small diameter ejection hole for removing foreign matter is opened within a range of approximately 90 degrees.

[0008]

According to the present invention, a plurality of ejection holes opened at predetermined intervals in the circumferential direction are provided at the rear of the nozzle body so as to float
Since it consists of a large-diameter ejection hole for propulsion and a small-diameter ejection hole for removing foreign matter, the high-pressure water ejected from the large-diameter ejection hole and the small-diameter ejection hole is stronger than the high-pressure water ejected from the large-diameter ejection hole. Therefore, in the nozzle body, the side where the small diameter ejection hole is open is pressed against the pipe wall by the high pressure water ejected from the large diameter ejection hole, and the high pressure water ejected from the small diameter ejection hole is a solid object. -Has a crushing power and cuts and crushes foreign substances including solids that project into the pipe. At this time, the small-diameter ejection hole is always located close to the inner wall of the pipe, and high-pressure water can be jetted from a position close to the foreign matter inside the pipe, so the foreign matter inside the pipe can be reliably and easily cut and crushed. Can be removed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A nozzle for removing foreign matter in a pipe according to the present invention will be described in detail below with reference to the embodiments shown in the drawings. In the drawings, reference numeral 1 denotes a nozzle body, and the nozzle body 1 is composed of a head portion 2 formed in a substantially conical shape and a hose connecting portion 3 protruding from the center of the rear end surface of the head portion 2. Reference numeral 4 denotes a flow passage formed in the nozzle body 1, and the flow passage 4 opens at the end of the hose connecting portion 3 and reaches the inside of the head 2. 5
Is a plurality of ejection holes opened at a predetermined interval in the circumferential direction on the rear end surface of the head 2, and communicates with the flow path 4,
The high-pressure water sent into the flow path 4 is ejected radially.

The ejection hole 5 is composed of a large-diameter ejection hole 6 for levitation and propulsion and a small-diameter ejection hole 7 for removing foreign matters. These large-diameter ejection hole 6 and small-diameter ejection hole 7 are the head portions. The rear end face 2 is opened on the same circumference at a predetermined interval, and the small diameter ejection holes 7 are arranged within an angle range of about 90 degrees.

Of the large-diameter ejection holes 5, the large-diameter ejection holes 6 have a diameter and a water pressure necessary to float the nozzle body 1 in the pipe in relation to the number of the large-diameter ejection holes 6 and generate high-pressure water. The diameter is set so that it can be ejected. The number of large-diameter ejection holes 6 is not particularly limited to two or more, but is appropriately set according to the weight of the nozzle body 1.

The jet angle of the large-diameter jet hole 6 is such that the high-pressure water jetted from the large-diameter jet hole 6 gives buoyancy and propulsion force to the nozzle body 1, The angle is a direction of jetting, and is set to an arbitrary angle within a range of approximately 10 degrees to 80 degrees. The smaller the injection angle, the greater the propulsive force but the weaker the buoyancy, and the larger the injection angle, the greater the buoyancy and the weaker the propulsive force.

On the other hand, the diameter of the small-diameter jet hole 7 is set so that the roots, rubber packing, mortar lumps, and other solid foreign matter protruding into the pipe can be rapidly jetted to the extent that they can be cut and crushed by high-pressure water. Has been done. The number of the small-diameter ejection holes 7 is not particularly limited to one or more, but is about 1/3 of the number of the large-diameter ejection holes 6 in the range of an angle of about 90 degrees on the circumference. preferable. Further, the injection angle of the small diameter ejection hole 7 is set to an arbitrary angle within the range of approximately 10 degrees to 90 degrees, and is not restricted by the ejection angle of the large diameter ejection hole 6.

4 and 5 show examples of use of the present invention. The nozzle according to the present invention is attached to the hose 8 by connecting the hose connecting portion 3 of the nozzle body 1 to the tip of the hose 8, and is inserted into a pipe 9 such as a sewer pipe.
In this state, when the high-pressure water generated by the ultra-high pressure pump unit is fed into the nozzle body 1 through the hose 8, the high-pressure water is ejected from the large-diameter ejection holes 6 and the small-diameter ejection holes 7 opening at the rear part of the nozzle body 1. At this time, the high-pressure water has a stronger force than the high-pressure water ejected from the small-diameter ejection hole 7 as compared with the high-pressure water ejected from the large-diameter ejection hole 6, and therefore, the nozzle body 1 has a force as shown in FIGS. 4 and 5. The high-pressure water ejected from the large-diameter ejection hole 6 presses the side on which the small-diameter ejection hole 7 is open against the wall surface of the pipe 9 and is simultaneously urged in the forward direction, and the high-pressure water ejected from the small-diameter ejection hole 7 is solid. Has the cutting and crushing power of
The foreign matter 10 including solid matter protruding to the inner surface of the tube 9 is cut and crushed. At this time, the small-diameter jet holes 7 are always located close to the inner wall of the pipe 9 as described above, and high-pressure water can be jetted from a position close to the foreign matter 10 inside the pipe 9, so The foreign material 10 can be reliably and easily cut and crushed.

In the operation of moving the nozzle body 1,
Since the propulsive force is obtained by the ejection force of the high-pressure water ejected from the large-diameter ejection hole 6, the hose 8 is easily advanced to move forward, and the movement in the pipe 9 in the circumferential direction is
By rotating the hose 8 about its axis, it is possible to move the hose 8 in the circumferential direction with the small-diameter ejection hole 7 side always being close to the inner wall of the pipe 9, and therefore, the hose 8 is extended and rotated. By operation, the nozzle body 1 can be easily moved to a desired position in the tube 9, that is, a position where the foreign matter 10 is projected.

[0016]

As described above, according to the nozzle for removing foreign matter in a pipe according to the present invention, a plurality of ejection holes, which are opened at a predetermined interval in the circumferential direction at the rear portion of the nozzle body, have a large diameter for levitation and propulsion. The high-pressure water ejected from the large-diameter ejection hole and the small-diameter ejection hole has a stronger force than the high-pressure water ejected from the large-diameter ejection hole because it consists of the ejection hole and the small-diameter ejection hole for removing foreign matter. In the nozzle body, the side where the small diameter ejection port is open is pressed against the pipe wall by the high pressure water ejected from the large diameter ejection hole, and the high pressure water ejected from the small diameter ejection hole has the ability to cut and crush solid matter. Since the small-diameter ejection holes are always located close to the inner wall of the pipe and eject from a position close to foreign matter in the pipe, not only the deposits accumulated in the pipe but also the roots of the tree and rubber protruding into the pipe. Packing, solid mortar, etc. Object can also be easily removed, even can be also easily remove oil adhering to the rust and the inner wall occurring in the tube wall or the like.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a nozzle for removing foreign matter in a tube according to the present invention.

FIG. 2 is a left side view of the nozzle shown in FIG.

FIG. 3 is a vertical sectional view of the nozzle shown in FIG.

FIG. 4 is an explanatory diagram showing a state of a nozzle in a pipe when a high water pressure is ejected from an ejection hole.

FIG. 5 is an explanatory view showing a usage state of the present invention.

[Explanation of symbols]

 1 Nozzle body 2 Head 3 Hose connection part 4 Flow path 5 Jet hole 6 Large diameter jet hole 7 Small diameter jet hole 8 Hose 9 Pipe 10 Foreign matter

Claims (2)

[Claims] 1. A nozzle for removing foreign matter in a pipe, which is attached to a tip of a hose, radially ejects high-pressure water sent from the hose in the pipe, and removes foreign matter in the pipe by the jetting water pressure and obtains propulsion force. A nozzle for removing foreign matter in a pipe, characterized in that a plurality of ejection holes, which are opened at predetermined intervals in the circumferential direction in the rear part of the main body, are composed of a large diameter ejection hole for levitation and propulsion and a small diameter ejection hole for foreign matter removal. 2. The small-diameter ejection hole for removing foreign matter is approximately 90.
The nozzle for removing foreign matter in a pipe according to claim 1, wherein the nozzle is open within a range of degrees.