JP2791502B2 - Sewer pipe cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention [Industrial Application Field] The present invention relates to a cleaning device used for cleaning sediment sludge and sediment of sewer pipes, and particularly to a so-called shelter provided at a location where a main sewer crosses a river. The present invention relates to a cleaning device applied to cleaning a sewer.

[Conventional technology]

 Fig. 5 shows the structure of the shelter of the sewer.

Here, A is a river, B is an upstream sewer, C is an upstream shelter, D is a shelter, E is a downstream shelter, and F is a downstream sewer. Then, in the overhanging part of the sewer, sludge and sediment accumulate on the bottom of manholes and sewers over the years (g, j, and r indicate the accumulated sludge and sediment), and the cross-sectional area of the flow passage is reduced. It eventually shrinks, eventually leading to a situation that impedes the flow of sewers.

For this reason, removal work is performed on the sediment, however, due to the sedimentary sediment, the weight is large, it is firmly solidified, and it adheres firmly to the pipe wall. The sewer is in a full state, and a normal cleaning method, for example, a cleaning method by jet water jetting is ineffective and cannot be expected to be sufficiently cleaned.

[Problems to be solved by the invention]

The present invention has been made in view of the above circumstances, and in particular, a washing device that is full of water as in a concealed portion, and that can exert its power in dredging sediment sediment that is firmly solidified and adhered to the pipe wall. The purpose is to provide.

B. Configuration of the Invention [Means for Solving the Problems] The cleaning apparatus for sewer pipes of the present invention employs the following configuration (technical means) to achieve the above object. That is, in the substantially cylindrical nozzle head main body made of a weight body, the outer edge of the rear portion is formed with an inclined surface having a predetermined angle, and an opening portion to which a high pressure water supply conduit is connected at the center of the rear surface. A conductive path for high-pressure water is formed along the axis of the nozzle head main body, and an injection path is formed radially from a deep portion of the conductive path toward an injection port formed on the inclined surface on the rear surface. An enlarged gas-liquid mixing chamber is formed in the middle of the injection passage, and a communication path for compressed air is connected to the gas-liquid mixing chamber.

[Action]

In use, a high-pressure water supply hose is connected to the high-pressure water passage, and a compressed air supply hose is connected to the compressed air passage.

By supplying high-pressure water through the high-pressure water supply hose and keeping the high-pressure water supply hose in a state where no pulling force is applied, the device propells through the sewerage line by self-propelled action by the injection force from the injection port. Moving.

The high-pressure water and the compressed air are supplied through the high-pressure water supply hose and the compressed air supply hose, and the device is retracted by applying a retraction force to the high-pressure water supply hose.

A high-pressure gas-liquid mixed flow of high-pressure water and compressed air is injected from the injection port to promote the dredging action of the sediment, and convey and move the dredged sand with the movement of the present apparatus.

〔Example〕

Sewer pipe cleaning device of the present invention (hereinafter simply referred to as "cleaning device")
Will be described with reference to the drawings.

 1 to 4 show a cleaning apparatus S according to one embodiment.

1 and 2, reference numeral 1 denotes a nozzle head main body of the main cleaning apparatus S, wherein a front surface 1a has a hemispherical shape, and a rear surface 1b.
Has a vertical shape and is entirely formed in a shell shape.
The front surface 1a is not limited to a hemisphere, but may take any suitable form such as a cone or a pyramid.

The head body 1 is made of a heavy body to withstand the reaction caused by the injection of high-pressure water and air, which will be described later, and is made of a two-part body consisting of a front part 1A and a rear part 1B in view of formability. The outer edge 1c of the rear surface 1b is formed as an inclined surface having a predetermined angle.

A relatively large-diameter high-pressure water passage 2 is formed at the center of the rear surface 1b along the axis of the nozzle head main body 1. A female screw 2a is screwed into the opening of the conduction path 2, and
An appropriate number (five in this embodiment) of relatively small-diameter injection passages 3 are formed radially from the back to the rear edge 1c.

The diameter of the injection passage 3 is gradually increased with a stepped portion until reaching the trailing edge 1c to form a gas-liquid mixing chamber 5 and an injection port 6, respectively. 5a and 6b are respective step portions.

Internal threads 3a and 5b are screwed into the open ends of the injection passage 3 and the gas-liquid mixing chamber 5, respectively.

Then, the gas-liquid mixing chamber 5 is screwed into the female screws 3a and 5b.
The first and second bases 7 and 8 are attached to the injection port 6.

Reference numeral 10 denotes a compressed air passage, and one supply passage 10a
And an annular passage 1b communicating with the air supply passage 10a and five branch passages 10c branched from the annular passage 10b and communicating with the gas-liquid mixing chamber 5.

More specifically, the air supply passage 10a is the nozzle head body 1
Are arranged in parallel with the axis of, and open to the rear edge 1c with a bent portion. A female screw 10d is screwed into the bent portion.

The annular passage 10b is formed by forming a groove in the front surface of the rear portion 1B of the nozzle head main body 1 and then abutting the front portion 1A and fixing the two by welding or screwing.

The branch passages 10c are arranged at equal intervals from the annular passage 10b and in parallel with the axis of the nozzle head 1, and communicate with the base of the gas-liquid mixing chamber 5.

FIGS. 3 and 4 show the detailed structure of the gas-liquid mixing chamber 5 and the injection port 6 to which the first base 7 and the second base 8 are mounted.

The first base 7 has a substantially cylindrical shape, and an injection passage 7a is formed through the axis thereof. The injection passage 7a has a rear portion connected to the compressed air passage 10 and is divided into a nozzle passage 7b having a gradually reduced hole diameter and an injection hole 7c connected to the minimum diameter of the nozzle passage 7b.

A screw 7d is screwed into the rear end of the outside of the first base 7, and the external screw 7d is screwed to the female screw 3a of the injection passage 3 and fixed. The outer diameter of the first base 7 is sufficiently smaller than the inner diameter of the gas-liquid mixing chamber 5, and an annular space 12 is formed therebetween.

The second base 8 has a larger diameter than the first base 7 and has a substantially cylindrical shape, and an injection passage 8a penetrating the axis thereof is formed. The injection passage 8a is divided into a rotatable tapered passage 8b and an injection hole 8c following the reduced diameter of the tapered passage 8b.
A screw portion 8d is screwed on the outside thereof, and the screw 8d is screwed and fixed to the female screw 5b of the gas-liquid mixing chamber 5.

As shown in the drawing, the injection passage 3 and the first base 7 and the second base 8 are arranged so that their axes O coincide with each other, and the tip of the first base 7 is formed by a tapered passage of the base 8. 8b
Is facing inside. And the branch passage 10 of the compressed air passage 10
c also opens in the annular space 12 and is arranged in a direction along the inclination of the tapered passage 8b of the second base 8. In this embodiment, the passage 10 is also arranged so as to coincide with the axis O described above, but it is also possible to adopt a mode that is eccentric from the axis O.

In use of the present cleaning device S configured as described above, in use, a high-pressure water hose is joined to the female screw portion 2a of the high-pressure water conduit 2, and a compressed air hose is joined to the female screw portion 10d of the compressed air conduit 10. .

The high-pressure water hose withstands a large tensile force and has appropriate flexibility, and its end is connected to a reel of a known mechanism and wound up by the reel. The reel is connected to a high-pressure water pump and a water tank via a conduit. Then, the water pressurized by the high-pressure pump is sent to the high-pressure water hose through the reel, and the high-pressure hose is wound up by the rotation of the reel.

 The other end of the compressed air hose is also connected to the air compressor.

Hereinafter, the operation procedure of the sewer pipe cleaning performed using the sewer pipe cleaning apparatus S of the present embodiment will be described, and the operation of the present apparatus S will be described.

FIG. 5 shows a cross-sectional structure of a wraparound portion to which the present cleaning apparatus S is particularly applied. In the figure, H is a high-pressure hose connected to the device S, 1 is a compressed air hose, and J is a drive unit including a reel, a high-pressure pump, and a compression unit.

 Hereinafter, description will be given based on the construction procedure.

(1) A high-pressure water hose H and a compressed air hose I are connected to the main cleaning device S via the internal thread portions 2a and 10d, and inserted into the entrance of the shelter from the downstream shelter. Finish the preparation process.

(2) High-pressure water is sent to the apparatus S via the high-pressure water hose H, and high-pressure water is injected from the injection port 6. Due to the reaction of this injection, the present device S self-propells in the overpass 2 from the downstream to the upstream. At this time, part of the sediment sediment in the shelter 2 is dredged by the jetting force of the jet water and is caused to flow downstream.

(3) When the present apparatus S reaches the upstream end of the shelter 2, compressed air is sent by the compression hose I in addition to the high-pressure water,
The tension is applied to the high-pressure hose H so that the apparatus S is pulled back. The pressure of the high-pressure water is about 500 to 800 kg / cm ² .

The compressed air mixes with the high-pressure water in the gas-liquid mixing chamber 5 and is injected from the injection port 6 through the hole 8 c of the base 8.

This mixing action is favorably performed by the swirling effect of the inclined surface in the tapered passage 8b of the base 8. Further, in a mode in which the compressed air passage 10 is eccentric from the axis O, the spiral effect is further promoted.

(4) In this state, the high-pressure water hose H is taken up by the rotation of the reel of the drive unit J, and the apparatus S is forcibly moved to the downstream side. The consolidated soil sand in the overpass pipe 2 is dredged by the gas-liquid mixed jet flow jetted from the jet port 6, and is conveyed downstream by the water flow. That is, the gas-liquid mixed jet flows into the fine gaps of the consolidated soil sand, and the large lifting force releases the binding force of the consolidated soil sand, and the impact force is applied to the consolidated soil sand by the injection force, It will exert a strong cleaning power.

In this way, the sediment in the sewer is completely dredged and washed.

According to the apparatus S of the present embodiment, high-pressure water and compressed air are mixed well through the first base 7 and the second base 8,
It exerts a dredging power that cannot be obtained with this type of conventional device.

The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following embodiments are included in the technical scope of the present invention.

It is sufficient that the injection port 6 is oriented at a predetermined angle without forming the edge of the rear surface 1b on the inclined surface 1c.

The portion of the annular groove 10b in the compressed air passage 10 may be formed as a pot-shaped recess.

C. Effect of the Invention According to the cleaning device for sewer pipes of the present invention, it adheres firmly to pipe walls that cannot be removed only by jetting high-pressure water,
In addition, sediment in the pipe in a full state can be easily dredged, and can be transported and removed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view (sectional view taken along the line II of FIG. 2) of one embodiment of the apparatus for cleaning a sewer pipe of the present invention, and FIG. 2 is II of FIG.
FIG. 3 is an enlarged view of a part III in FIG. 1, FIG. 4 is a sectional view taken along a line IV-IV in FIG. 3, and FIG. is there. S: Cleaning device, 1: Nozzle head body, 1b: Rear surface, 1c: Outer edge inclined surface, 2 ... High-pressure water conduction path 3 ... Injection path, 5: Gas-liquid mixing chamber, 6 ... Injector, 7 ... 1st
Base, 8 ... Second base, 10 ... Compressed air passage, 12 ...
Annular space

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yukio Matsumura 5-12-4 Honkomagome, Bunkyo-ku, Tokyo (72) Inventor Hisashi Takahashi 912-5, Shimohiroya, Kawagoe-shi, Saitama (72) Inventor Isamu Tokyo Adachi 1-36-11 Nishisugamo, Nishisugamo, Toshima-ku (72) Inventor 3-14-11 Nishiarai, Adachi-ku, Tokyo (56) References JP-A-58-49457 (JP, A) JP-A-58-3865 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) E03F 9/00 B08B 9/02

Claims (4)

(57) [Claims] 1. A substantially cylindrical nozzle head body made of a weight body, an outer edge of a rear portion thereof is formed with an inclined surface having a predetermined angle, and a high pressure water supply conduit is connected to the center of the rear surface. A conductive path for high-pressure water is formed along the axis of the nozzle head main body, and is radially ejected from a deep portion of the conductive path toward an injection port formed on the inclined surface of the rear surface. A passage is formed, a gas-liquid mixing chamber having an enlarged diameter is formed in the middle of the injection passage, and a communication path of compressed air is communicated with the gas-liquid mixing chamber. . 2. A gas nozzle according to claim 1, wherein a first mouthpiece having a nozzle passage is mounted at an opening end of said injection passage to said gas-liquid mixing chamber, and said first mouthpiece is provided between said gas-liquid mixing chamber and said first mouthpiece. An annular space is formed in the annular space, and a passage for compressed air is communicated with the annular space. 3. The cleaning device for a sewer pipe according to claim 2, wherein a passage for compressed air is eccentrically arranged in the gas-liquid mixing chamber. 4. A second base having a nozzle passage is provided at an open end of the gas-liquid mixing chamber, and the first base is disposed facing the nozzle passage of the second base. Cleaning equipment for sewer pipes.