JP2546595Y2 - UV irradiation machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultraviolet irradiator used for lining a pipe inner surface.

[0002]

2. Description of the Related Art The present applicant has developed a lining method for a pipe inner surface as shown in FIGS. In this lining method, as shown in FIG. 10, an ultraviolet curable tube 2 is inverted and inserted into an existing pipe 3 such as a sewer pipe by air pressure using a tube inverting and inserting machine 1 and, at the same time, a balloon-type plug 4 is drawn into the pipe. The tip of the tube 2 is cut off while the balloon-type plug 4 is inflated to prevent air leakage in the tube, and the closing member 5 is closed.
Is mounted airtight, and an ultraviolet irradiator 6
And then connected to the balloon-shaped plug 4, and thereafter, the ultraviolet-ray irradiator 6 is moved while the balloon-shaped hull 4 is contracted and the air hose 7 is rewound as shown in FIG. This is a method of curing the tube 2 by irradiation.

An ultraviolet irradiator 6 used in this lining method has end plates 6b, 6b with wheels fixed to both ends of a reflecting tube 6a, and a plurality of ultraviolet lamps 6c are connected to the reflecting tube 6a.
, And attached to one end plate 6b.
Since not only the ultraviolet light emitted from the ultraviolet lamp 6c is directly applied to the tube 2, but also the ultraviolet light reflected by the reflecting tube 6a is applied to the tube 2, the tube can be cured relatively efficiently.

[0004]

However, in the above-mentioned ultraviolet irradiator 6, when the ultraviolet lamp 6c having a large output is mounted to increase the curing speed of the tube 2, the amount of heat generated by the ultraviolet lamp 6c increases. Tube 2 with heat
However, there is a problem that the curing time cannot be significantly reduced because of the disadvantage that the curing time is deteriorated.

[0005] As a solution to such a problem, a plurality of ultraviolet irradiators 6 equipped with ultraviolet lamps 6c having a not so high output are connected and moved in the tube 2, and each part of the tube 2 is irradiated with a plurality of ultraviolet rays. It is conceivable that the ultraviolet irradiation is sequentially repeated a plurality of times by the machine 6. However, when a plurality of ultraviolet irradiators 6 are connected, the total length becomes long and it becomes impossible to enter the inside of the closing member 5, so that this solution has been difficult to adopt.

[0006] The present invention has been made in view of the above problems, and its purpose is to be able to be inserted into the inside of the closing member 5 in the same manner as in the case of a conventional single ultraviolet irradiator 6, and furthermore, the tube 2. It is an object of the present invention to provide a convenient ultraviolet irradiator capable of efficiently curing an ultraviolet ray in a short time without thermally deteriorating the ultraviolet ray.

[0007]

In order to achieve the above object, the ultraviolet irradiator of the present invention has a lamp holder fixed to an outer periphery of an end of a reflecting tube, and a plurality of ultraviolet lamps are arranged around the reflecting tube. It is composed of a plurality of movable irradiation units attached to a lamp holder, and the diameter of the reflection tube is enlarged or reduced as the irradiation unit comes later, and the reflection tubes of each irradiation unit are connected in a multi-fitting manner. In addition, an ultraviolet lamp is arranged around the reflecting cylinder of each irradiation unit so that the ultraviolet lamps of each irradiation unit do not hit each other when multiple fitting is performed.

[0008]

In the ultraviolet irradiator of the present invention, when the reflecting tube of each irradiation unit is pushed in and multiple-fitted, the total length of the irradiator is shortened in a state where the ultraviolet lamps do not hit each other and each irradiation unit is overlapped. Of the irradiation unit. Then, when the reflecting tube of each irradiation unit is pulled out to extend the entire length of the irradiation machine, the irradiation units are arranged in a line and connected.

Therefore, if the total length of the ultraviolet irradiator is reduced to substantially the same length as a single irradiation unit, it can be easily inserted into the closing member at the end of the tube. When the entire length of the irradiator is extended and the irradiation units are connected in a row and the ultraviolet irradiation is performed while traveling in the tube, each part of the tube is repeatedly overlapped several times by the ultraviolet lamp of each irradiation unit. Because it is irradiated,
The ultraviolet irradiation time (total irradiation time) to each part of the tube is much longer than that of a conventional single ultraviolet irradiation machine. Therefore, it is possible to increase the moving speed of the irradiator and harden the tube efficiently in a short time without installing a high-power ultraviolet lamp.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1, 2, and 3 are a perspective view, a side view, and a sectional view, respectively, showing a state in which an ultraviolet irradiator according to an embodiment of the present invention is expanded. FIG. 4, FIG. 5, and FIG. FIG. 3 is a side view, a cross-sectional view, and a front view showing a state where the ultraviolet irradiator is compressed.

The ultraviolet irradiator of this embodiment comprises two movable irradiation units 10a and 10b as shown in the figure. The leading irradiation unit 10a has a reflecting tube 11a on its center line, and a lamp holder 12a is fixed to the outer periphery of the rear end of the reflecting tube 11a. The three ultraviolet lamps 13a are arranged at intervals of 120 ° around the reflecting tube 11a,
2a. The lamp holder 12a has petal-shaped convex portions 121a radially formed at three positions at intervals of 120 °. Each of the petal-shaped convex portions 121a is provided with a socket, and the socket is provided with the above-mentioned ultraviolet lamp 13a. The ends are plugged. Also, around the lamp holder 12a, there are six rear casters 14a.
Are radially arranged at intervals of 60 °, and are attached to both step portions of the petal-like convex portion 121a.

On the other hand, the dish-shaped member 1 is
5a is fixed, and the eyebolt 16 is attached to the dish-shaped member 15a.
a is attached. The ultraviolet lamp 13a is protected from obstacles on the outer periphery of the dish-shaped member 15a.
The protection projections 151a and the caster mounting pieces 152a are alternately radially formed at intervals of 60 °, and the front casters 17a are mounted on the mounting pieces 152a. This front caster 17a is shown in FIGS.
As shown in the figure, the upper ends of the pair of left and right leg pieces 171a are attached to the mounting piece 1.
52a, the leg 171a and the mounting piece 1
When traveling in an existing pipe having a small pipe diameter, the leg piece 171a presses and compresses the compression spring 172a as shown by a dashed line in FIG. It moves so that the opening angle of the leg piece 171a decreases according to the pipe diameter. Similarly, the rear caster 14a also has a leg piece rotatably fixed to both step portions of the petal-shaped protrusion 12a, and a compression spring (not shown) is provided between the leg piece and both step portions. The opening angle of the leg piece is configured to decrease according to the pipe diameter.

A short cylindrical slider 18a is inserted into the reflecting tube 11a, and a protrusion 181a of the slider 18a is fitted in a groove 111a of the reflecting tube 11a. Therefore, as shown in FIG. 3, the slider 18a slides inside the reflecting tube 11a until the projection 181a hits the rear end of the groove 111a, and stops in a state where the slider protrudes about half from the reflecting tube 11a. 11a
From getting out of the way.

Similarly to the first irradiation unit 10a, the second irradiation unit 10b has a lamp holder 12b fixed to the outer periphery of the rear end of the reflecting tube 11b and the three ultraviolet lamps 1b.
3b are arranged around the reflecting tube 11b at intervals of 120 ° and attached to the petals 121b of the lamp holder 12b, and a total of six rear casters 14b are arranged at intervals of 60 ° around the lamp holder 12b. It is mounted on both side steps of the petal-shaped convex portion 121b. The diameter of the reflecting tube 11b of the irradiation unit 10b is reduced so that it can be fitted and inserted into the reflecting tube 11a of the previous irradiation unit. The tip is connected to the slider 18a by a universal joint 19b. Then, the ultraviolet lamp 13b is disposed around the reflecting tube 11b by being rotated by 60 ° with respect to the ultraviolet lamp 13a of the irradiation unit 10a, and attached to the petal-shaped convex portion 12b which is also rotated by 60 °. Have been.

In the ultraviolet irradiator having the above configuration, when the reflecting tube 11b of the second irradiation unit 10b is pushed into the reflecting tube 11a of the second irradiation unit 10b together with the slider 18a to form a double fitting, the reflecting tube 11a of the first irradiation unit 10a is shown in FIGS. As shown in FIG. 6, the entire length of the irradiator is shortened in a state where the irradiation units 10a and 10b are overlapped without the ultraviolet lamps 13a and 13b being alternately illuminated at intervals of 60 °, and the length of the single irradiation unit is reduced. It will be almost the same. Then, as shown in FIGS. 1 to 3, the second irradiation unit 1 is moved until the projection 181a of the slider 18a hits the rear end of the groove 111a of the reflection tube 11a.
When the entire length of the irradiator is extended by pulling out the reflecting tube of 0b, the two irradiating units 10a and 10b are arranged in a line so as to be unextractably connected and bendable in any direction at the universal joint 19b. .

Therefore, when the total length of the ultraviolet irradiation device is reduced to substantially the same length as a single irradiation unit, the ultraviolet irradiation device 10 is put into the closing member 5 at the end of the tube 2 as shown in FIG. The eyebolt 16a at the tip
Can be connected to the balloon-type plug 4. And FIG.
The length of the irradiation unit is extended as shown in FIG.
When the ultraviolet irradiation is performed while traveling in the tube 2 in a state in which the tubes a and 10b are connected in a line, each part of the tube 2 is irradiated with the ultraviolet lamp
UV irradiation is repeated twice by a and 13b, and the UV irradiation time (total irradiation time) to each part of the tube is approximately twice as long as the conventional single UV irradiation machine.
Therefore, it is possible to increase the moving speed of the ultraviolet irradiator and efficiently cure the tube 2 in a short period of time without thermally deteriorating without mounting high power lamps having a large amount of heat as the ultraviolet lamps 13a and 13b. Become.

Moreover, in this ultraviolet irradiator, the front and rear irradiation units 10a and 10b are
b, it is possible to smoothly run through the tube 2 along the existing pipe 3 even if the existing pipe 3 is bent, and the front caster 17a and the rear casters 14a, 14b Since the opening angle is freely changed, the tube 2 can be smoothly run even if the tube diameter is slightly larger or smaller, or even if the inner surface of the tube has irregularities.

The reflecting cylinders 11a and 11b of the irradiation units 10a and 10b are used without using a universal joint.
Are difficult to bend when they are directly fitted and connected, but even in that case, the front casters 17a and the rear casters 1
Since the tubes 4a and 14b absorb irregularities on the inner surface of the tube and slight bending of the tube, they can run smoothly, and if the reflecting tubes 11a and 11b are directly fitted and connected as described above, the irradiator When shortening the overall length, the reflecting cylinders 11a, 11
There is a merit that b is easily compressed.

As described above, the two irradiation units 10a and 10b
The present invention has been described by way of an example in which the irradiation unit is connected. However, the ultraviolet irradiator of the present invention is not limited to this. The diameter of the irradiation unit becomes larger or smaller as the irradiation unit becomes later.

[0021]

As is apparent from the above description, the ultraviolet irradiator of the present invention can be easily inserted into the closing member at the end of the ultraviolet curing tube with its entire length compressed and expanded. By irradiating the ultraviolet rays while running in the tube in a state where the irradiation units are connected in a line, a remarkable effect that the tube 2 can be efficiently cured in a short time without causing thermal deterioration can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an extended state of an ultraviolet irradiator according to an embodiment of the present invention.

FIG. 2 is a side view showing a state where the irradiator of the embodiment is extended.

FIG. 3 is a cross-sectional view showing a state where the irradiator of the embodiment is extended.

FIG. 4 is a side view showing a state where the irradiation machine of the embodiment is compressed.

FIG. 5 is a cross-sectional view showing a state where the irradiator of the embodiment is compressed.

FIG. 6 is a front view showing a state where the irradiator of the embodiment is compressed.

FIG. 7 is an enlarged view of a front caster mounting portion of the irradiation machine of the embodiment.

FIG. 8 is a cross-sectional view showing a state in which the ultraviolet ray irradiator is compressed and inserted into the inside of a closing member at the end of the tube in the lining method of the inner surface of the tube for ultraviolet-curing the ultraviolet-curable tube that has been reversely inserted into the tube. is there.

FIG. 9 is a cross-sectional view showing a state in which the ultraviolet irradiation is performed while the ultraviolet irradiation device is extended and running inside the ultraviolet curing tube in the lining method.

FIG. 10 is a cross-sectional view showing a state in which a conventional ultraviolet irradiator is inserted into a closing member at an end of a tube in the lining method.

FIG. 11 is a cross-sectional view showing that a conventional ultraviolet irradiator is irradiating with ultraviolet light while traveling inside an ultraviolet curing tube in the lining method.

[Explanation of symbols]

 2 UV-curable tube 3 Existing pipe 4 Balloon plug 5 Closure member 10 UV irradiator, 10a, 10b Irradiation unit 11a, 11b Reflector tube 12a, 12b Lamp holder 13a, 13b UV lamp 14a, 14b Rear caster 17a, 17b Front Caster 18a Slider 19b Universal joint

Claims (1)

(57) [Scope of request for utility model registration] 1. An ultraviolet irradiator comprising a plurality of movable irradiation units, wherein a lamp holder is fixed to an outer periphery of an end portion of a reflecting tube, and a plurality of ultraviolet lamps are arranged around the reflecting tube and mounted on the lamp holder. In addition, the diameter of the reflecting tube is enlarged or reduced so that the reflecting tube of each irradiating unit is multiplex-fitted so as to be a later irradiating unit, and the UV lamps of each irradiating unit do not hit each other when multiplex-fitting. An ultraviolet irradiator characterized in that an ultraviolet lamp is arranged around a reflecting tube of each irradiator unit as described above.