JPS6010786B2 - pipe lining equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe lining device, particularly a dry lining device, which is useful for internal lining and rehabilitation of existing pipes for water supply, sewerage, etc. pipes.

A wide variety of devices for lining existing pipes for water supply, sewerage, etc. have been developed and put into practice, but to the best of the present inventor's knowledge, all of these conventional devices are wet-type lining devices. In this method, water and the materials to be mixed are thickened in advance to form a mixed material ready for use, and this mixed material is supplied to the lining head via a conveyance hose and sprayed onto the inner surface of the pipe. As a result, the mixed material remains inside the conveying hose after the lining treatment, and since this residual mixed material has already been dug, it cannot be reused and has no choice but to be discarded, resulting in wasted material. Furthermore, if the residual mixed material is left in the transportation hose, it will solidify inside the hose, making cleaning the hose necessary and requiring time and effort, and the waste liquid generated during this cleaning and the residual mixture The materials had many disadvantages, such as being industrial waste and causing pollution problems.

Therefore, the present invention has been developed in view of the above points, and the water and the material to be mixed are separately conveyed under pressure to the lining head, and then mixed immediately before being supplied to the lining head. The so-called "dry type" pipe lining makes it possible to reuse the material remaining during transportation, eliminating wasted material, as well as eliminating the hassle of cleaning and the generation of industrial waste. The purpose of this device is to supply a mixed material through a mixer to a lining head that can be freely pulled inside a pipe, and then use this lining head to rotate and disperse the mixed material. In a pipe lining device, the mixed material is sprayed onto the inner surface of the pipe using a finishing trowel attached to the lining head, and the sprayed mixed material is leveled to a certain thickness using a finishing trowel attached to the lining head. The system includes an air motor connected to the system, and a spinner that can rotate at high speed and spray the mixed material onto the inner surface of the pipe. A peripheral wall on the side in the rotational direction of the entrance part is formed as a flat part, and a large number of wavy irregularities are formed on the inner surface of the flat part,
The above-mentioned mixer is connected to the lining head on the one hand, and connected to the supply system for the materials to be mixed and the water supply system on the other hand, and is connected to the concession water supply system via a water ring so that high-pressure water can be freely introduced into the mixer. In addition, inside the Namiai mixer, there is an outer surface that can be fixed freely in accordance with the inner surface shape of the mixer to prevent the mixed materials from shifting and to move and knead the Namiaimura materials throughout the interior space of the mixer. ring and the same 0 inside the outer ring.
A flow regulator is provided having a plurality of twisted blades whose ends are supported between the inner ring arranged in a circular shape, and further,
The lining head and mixer are fixed at the center of the pipe via a skid with a spring that abuts against the inner surface of the pipe, and the finishing trowel is connected to the tip of a spinner and has a plurality of blades. It is an object of the present invention to provide a pipe lining device characterized in that the pipe is formed into a tapered shape by combining the pipes, and an outer diameter adapted to the inner diameter of the pipe can be obtained via a spring.

The details will be explained below based on the illustrated embodiment. FIG. 1 shows a schematic explanatory diagram of a pipe lining device 2 placed inside an existing pipe 1, in which 3 is a lining head and 4 is a lining head. A mixer, and 5 a finishing trowel. 0
The lining head 3 is composed of an air motor 6 and a spinner 7, and is freely pulled within the pipe 1 by a pulling means (not shown).

The air motor 6 is connected to a pressurized air system 8, and the sleeve 10 is made freely rotatable at high speed via internal rotary blades 9. As shown in FIG. 2, the pressure air system 8 includes an air compressor 11, an air tank 12, a pressure reducing valve 13,
It consists of a solenoid valve 14, an air hose 15, etc., and is connected to the air motor 6 via the air hose 15. The spinner 7 is replaceably attached to the zero end of the sleeve 10 and can be rotated at high speed, and this rotation can also spray a mixed material, which will be described later, onto the inner surface of the pipe 1. This spinner 7 has a plurality of five plates 19 (three in the illustrated example) radially interposed between a mounting plate 17 having a mounting hole 16 for the sleeve 10 and a mixed material shielding plate 18. A mixed material, which will be described later, can be sprayed in a distributed manner between these plates 19 [FIG. 4B], but the invention is not limited thereto. For example, as shown in FIG.
It is also possible to use a T-shaped spinner 7a having 0 spinners 7b and 20c. Furthermore, FIG. 7 shows a spinner 47 having two openings 46a and 46b for blowing out the mixed material that protrude toward the inner surface of the pipe.
The peripheral walls 48a, 48b are rotated in the direction of rotation (arrow
) sides are formed as flat portions 49a, 49b, and the inner surfaces of these flat portions 49a, 49b have a large number of wavy irregularities 50a.
, 50b are formed so that the mixed material can be uniformly distributed and sprayed onto the inner surface of the pipe.

Although the spinner has two closing openings for blowing out the mixed material in the illustrated example, the number is not limited to this, and the number may be three or more. On one side of the mixer 4', the interior 23 is connected to the sleeve 10 and connected to the lining head 3, and the other side is connected to a supply system 21 for materials to be mixed and a water supply system 22, The materials to be mixed and water separately sent from the supply system 21 and the water supply system 22 for these waste materials are mixed inside 23 to form a mixed material that can be freely combined with the lining head 3.

Further, in the interior 23 of the mixer 4, there is provided a flow regulating fluid 51 that prevents the mixed materials from shifting and allows the mixed materials to be positioned and moved throughout the interior space of the mixer 4, while sufficiently mixing the materials.

This flow regulator 51 has a plurality of (
In the illustrated example, it is formed of three twisted blades 54, and the mixed material is rotated when passing through the twisted blades 54 (FIG. 6). A feature of the present invention is that the water and the material to be soaked are mixed in the conveying zone immediately before being combined with the lining head 3 to obtain a mixed material. The supply system 21 for the materials to be mixed includes an air compressor 11, an air tank 12, a tank 24 for the materials to be mixed, a solenoid valve 25, a pressure reducing valve 26, a conveyance hose 27, etc., and is connected to the mixer 4 via the conveyance hose 27. A fixed amount of the materials to be mixed can be freely pumped (Fig. 2). The water supply system 22 includes a water tank 28 with a fly pump (not shown), a pump 29, a constant pressure tank 30, a pressure reducing valve 31, a solenoid valve 32, and a water hose 33.
It consists of a visual gauge 42 as an instantaneous flow meter, etc., and is connected to the mixer 4 via this water hose 33, so that a fixed amount of water can be freely conveyed (FIG. 2). Further, between the water hose 33 and the mixer 4, there is a water amount regulator 43, which sets and adjusts the desired water amount with a knob 45 with an indicator needle 44 while looking at the visual gauge 42, and a plurality of It is even better to supply high-pressure water to the mixer 4 by interposing a water ring 35 with an orifice 34 (FIG. 3). Further, the mixer 4 and the lining head 3 each have a skid 37 with a spring 36 that can be freely moved against the inner surface of the pipe 1 and can be positioned at the center of the pipe. The finishing trowel 5 can be freely attached to the tip of a spinner 7 via a universal joint 38, and the mixed material 39 sprayed by the spinner 7 can be leveled to a constant thickness and can be finished.

In the illustrated example, the finishing trowel 5 is formed into a tapered shape by combining a plurality of blades 40, and the large outer diameter portion is made adaptable to the inner diameter of the pipe 1 via a spring 41. Although not limited to this, a plurality of tapered finishing trowels of different sizes (not shown) are prepared in advance, and a finishing trowel with an outer diameter approximately corresponding to the inner diameter of the pipe to be lined is selected and attached. Also good. Next, to explain the operation of the present invention, first, the lining head 3 is installed so as to be freely towable inside the existing pipe 1, which has been previously cleaned to remove rust, lumps, etc. from the inner surface, and the mixed material is applied to the lining head 3. At this time, a certain amount of water and the material to be mixed are separately conveyed under pressure in the water supply system 22 and the supply system 21 for the mixed material, and the pressurized conveyance area immediately before these are fed to the lining head 3. In the interior 23 of the mixer 4 that forms the above-mentioned materials, they are mixed under the respective conveying pressures to form a mixed material, which is then supplied to the lining head 3.

During this time, the above-mentioned materials to be mixed, such as cement and sand, are premixed with water in a reusable range in the material to be mixed tank 24 so that they do not separate during pressurized conveyance. Further, the water from the water supply system 22 is increased in pressure through the water ring 35 so that the desired amount of water adjusted by the water amount regulator 43 is uniformly heated to 360°C.
It is injected into the interior from the direction of , making it easier to mix in the mixer 4. Next, the mixed material is mixed in the mixer 4 and supplied to the lining head 3. The mixed material is then dispersed by rotation in the lining head and sprayed onto the inner surface of the pipe 1.

At the time of mixing, the mixed material is rotated by the fluid regulator 51 without being biased toward the lower part of the inner surface of the mixer, moves throughout the interior, and is thoroughly kneaded.The lining head 3 is connected to the pressure air system 8. air motor 6
The spinner 7 is rotated at high speed through the sleeve 10.
The mixed material that has passed is dispersed in the radial direction by a spinner 7 and is strongly adhered to the inner surface of the pipe.Also, since it is always positioned at the center of the pipe via the skid 37, it is sprayed uniformly onto the inner surface of the pipe. done to. In addition, as shown in FIG. 7, wavy unevenness 50a, 50
When using the spinner 47 having b, uniform dispersion and spraying of the mixed material can be achieved, and finishing treatment becomes easy. In this state, the lining head 3 is pulled by a pulling means (not shown) to sequentially spray the inner surface of the pipe, and then the finished mixed material is smoothed to a constant thickness using a finishing trowel 5 for finishing.

In this case, the finishing trowel 5 is connected to the lining head 3, and its outer diameter is adaptable to the inner diameter of the pipe, so that it can finish the mixed material immediately after spraying, and finish it uniformly with an appropriate thickness. In good condition. As explained above, when using the pipe lining device according to the present invention, a mixer connected to a water supply system and a supply system for materials to be mixed is installed on the lining head which can be freely pulled inside the pipe, and water and The material to be mixed is mixed in the pressurized conveyance area just before being supplied to the lining head, and the mixed material is sprayed from the lining head onto the inner surface of the pipe. Since the materials are in an unmixed state, they can be reused, and compared to transporting pre-mixed materials as in the case of sub-chambers, the material can be significantly saved, and construction costs can also be significantly reduced. In addition, the conventional method requires no effort to clean and dispose of residual materials, and it also eliminates the generation of industrial waste, which is extremely beneficial in terms of pollution prevention.

In addition, a plurality of rims each having an end supported between an outer rig which is freely fixed in the mixer according to the inner surface shape of the mixer and an inner ring arranged in the same circular shape inside the outer ring. A flow regulator with twisted blades was installed to prevent the mixed material from shifting in the mixer, resulting in good moat mixing.Furthermore, a flat part and wavy irregularities were formed at the outlet of the spinner to prevent the material from dispersing on the inner surface of the pipe. This has remarkable effects such as uniform spraying and extremely easy finishing treatment.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of a pipe lining device according to the present invention, Fig. 2 is an explanatory diagram showing a pressurized air system, a combined supply system for waste water and a water supply system, and Fig. 3 is a mixer and a lining head. and an enlarged cutaway view of main parts of the finishing trowel, Fig. 4 A, the mouth is a perspective view showing an embodiment of the spinner, Fig. 5 is a perspective view showing an embodiment of the finishing trowel, Fig. 6 is a rectifier. FIG. 7 is an enlarged perspective view of another modification of the spinner. In the figure, 1...pipe, 2...pipe lining device, 3
... Lining head, 4 ... Mixer, 5 ... Finishing trowel, 6 ... Air motor, 7, 7a ... Spinner, 8 ... Pressure air system, 21 ... Supply system for materials to be mixed, 22 ... Water supply system, 35 ... Water ring, 37 ... Skid, 43 ... Water volume regulator, 49a ,49b...
・・Flat portion, 50a, 50b ・・・Wave-shaped uneven portion, 51
...Fluid regulation, 54...Twisted blade. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. Supplying the mixed material via a mixer to a lining head that can be pulled freely within the pipe, and using this lining head to disperse the mixed material by rotation and spraying it onto the inner surface of the pipe,
In addition, in pipe lining equipment that uses a finishing trowel attached to the lining head to flatten and finish the sprayed mixed material to a certain thickness, the lining head is operated at high speed by an air motor connected to a pressurized air system. It has a spinner that is rotatable and can freely spray the mixed material onto the inner surface of the pipe, and the spinner has one or more openings for blowing out the mixed material that protrudes toward the inner surface of the pipe, and the spinner has one or more openings for blowing out the mixed material, and the spinner has one or more openings for blowing out the mixed material, and the spinner has one or more openings for blowing out the mixed material, and the spinner has one or more openings for blowing out the mixed material, and the spinner has one or more openings for blowing out the mixed material, and the spinner has one or more openings for blowing out the mixed material, and the spinner has one or more openings for blowing out the mixed material that protrudes toward the inside of the pipe, and the spinner has one or more openings on the rotational direction side of the openings. The peripheral wall is formed as a flat part, and a large number of wave-shaped irregularities are formed on the inner surface of this flat part, and the mixer is connected to a lining head on one side, and a supply system for materials to be mixed and a water supply system on the other hand. The mixer is connected to the water supply system via a water ring so that high-pressure water can be freely introduced into the mixer. The end portion is supported between an outer ring which is freely fixed in accordance with the inner surface shape of the mixer for kneading while positioning and moving the materials, and an inner ring arranged concentrically inside the outer ring. A flow regulator having a plurality of twisted vanes is provided; furthermore, the lining head and mixer are positioned at the center of the pipe via a skid with a spring that abuts the inner surface of the pipe; A pipe lining device characterized in that the blade is connected to the tip of a spinner, and is formed into a tape shape by combining a plurality of blades, and has an outer diameter that adapts to the inner diameter of the pipe via a spring. .