JPH067804U - Rail device for sludge attractor - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the frequency of replacement of the rail device for sludge scrapers, and to allow easy replacement when worn. [Structure] An internal thread is threaded on a metal rail 3 which is laid in the concrete C at the bottom of the sedimentation pond, and a guide rail mounting bolt 4 is screwed onto this to form a wear-resistant resin layer. 5a and a guide rail 5 including a cored bar 5b embedded therein
Since the abrasion resistant resin layer 5a has excellent durability, the guide rail 5 is replaced less frequently, and the cored bar 5 prevents the corrugated deformation of the guide rail 5 due to temperature expansion. Since the number of the guide rail mounting bolts 4 can be reduced, the guide rail 5 can be replaced by attaching and detaching a small number of the guide rail mounting bolts 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a rail device for a sludge scraper, which guides a flight plate for scraping sludge settling in a sedimentation basin such as a sewage treatment plant or a water purification plant to a predetermined place, and more specifically, The present invention relates to a rail device for a sludge attractor which has excellent durability and can be easily replaced.

[0002]

[Prior art]

 Sludge traps are installed in sedimentation ponds such as sewage treatment plants and water purification plants to draw sludge settling at the bottom of the ponds to specified locations. This type of sludge scraper is an endless type in which flight plates 51 are attached at a plurality of predetermined remote locations, as schematically shown in FIG. 3 which is a longitudinal side view of a sedimentation basin in which the sludge scraper is installed. A strip 52 such as a chain is wound around a wheel 53 such as a sprocket installed at a plurality of locations in the sedimentation basin P, and the belt 52 is fixed by the rotational force of a specific wheel 53a that is rotationally driven by a drive motor 54. The flight board 51 is run by rotating it at the position.

While the flight board 51 is traveling, the rail 55 laid on the sedimentation basin P supports the flight board 51 at an appropriate position on an annular traveling path. Further, the rails 55 are laid at two locations, that is, the entire forward path of the flight plate 51 and the return path, and as shown in FIG. The fried plate 51 has a pair of left and right sliding contact members 56, 56 that slide on a rail 55 laid along the entire forward path, and a rail 57 laid along two points of the return path. It is provided with a pair of left and right sliding contact members 58, 58 that slide with respect to each other.

By the way, since the flight plate 51 is supported by the rail 55 and repeatedly runs on it, both the sliding contact piece 56 and the rail 55 are worn during the running. Since these abrasions are caused by the above-mentioned friction between the metals, they occur relatively early, especially when the rail 55 is unevenly worn, the running stability of the flight plate 51 is not ensured, and sludge at the bottom of the pond is unnecessary. If it becomes severely worn, it is necessary to replace the sliding contact 56 and the rail 55.

However, although the sliding contact can be replaced relatively easily, since the rail is long and works at the bottom of the pond, there is a problem that a great deal of time and effort is required to replace the rail. Therefore, attempts have been made to reduce the troublesome wear of the rails for replacement as much as possible, or to reduce the labor and labor required for the rail replacement.

For example, in the one disclosed in Japanese Utility Model Publication No. 967/1989, as shown in FIG. 5a which is a configuration diagram of the main part of the rail device and FIG. 5b which is a sectional view of the rail device, a sliding contact 56 is shown. , 58 are made of synthetic resin, while a bolt 60 is screwed into a female screw 55a screwed at the center position of the rail 55 in the width direction to fix a plate-shaped synthetic resin plate 59 on the rail 55. The plate 59 is replaced by removing the bolt 60 from the female screw 55a.

Further, in the one disclosed in Japanese Patent Application Laid-Open No. 2-191510, as shown in FIG. 6 which is an explanatory view of the main part configuration of the rail device, one side is open and each side of the opening is opposite to each other. A synthetic resin rail 59 having a cross-section similar to that of a so-called channel-shaped lightweight steel having a lip portion 59a is detachably mounted on the rail 55. The purpose is to easily replace the synthetic resin rail 59 or the synthetic resin rail 59.

[0008]

[Problems to be solved by the device]

 However, in the former one, which is disclosed in Japanese Utility Model Publication No. 64-967, a synthetic resin plate is fixed on a rail by mechanical means, for example, bolts. Since the coefficient of expansion is much larger than the coefficient of thermal expansion of the rail, the portion where the bolts are fixed becomes low, and wavy deformation occurs where the distance between the bolts becomes high. Regardless of whether the temperature is high or low, a large number of bolts must be used to keep the plate along the rail while suppressing wavy deformation, and there is a problem to be solved that plate replacement is not so easy. .

Further, in the latter one disclosed in Japanese Patent Laid-Open No. 2-191510, since a channel-shaped synthetic resin rail is detachably mounted on the rail, the replacement thereof is extremely difficult. Although it is easy, it is not possible to manufacture synthetic resin rails with high hardness, that is, synthetic resin with excellent wear resistance because the lip part needs to be deformed, which results in early wear and frequent replacement. There are issues to be solved.

Therefore, an object of the present invention is to provide a rail device for a sludge scraper that does not need to be replaced frequently and can be replaced easily.

[0011]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the main means adopted by the rail device for a sludge attractor according to claim 1 of the present invention is characterized in that it is laid in a sedimentation pond and repeatedly run by an endless chain. In a rail device of a sludge scraper that guides a fly plate that draws up sludge settling in the settling basin, a rail laid in the settling basin and a detachably fixed upper part of the rail. , A guide rail in which a core metal is embedded in wear-resistant resin.

Further, a feature of the main means adopted by the rail device for a sludge attractor according to claim 2 of the present invention is that the sludge is laid in a sedimentation pond and repeatedly run by an endless chain to cause the sedimentation. In the rail device of the sludge attractor that guides the flight plate that draws up the sludge that has settled in the pond, the anchor bolt whose lower part is embedded in the concrete of the settling pond and the nut that is screwed to the anchor bolt It is composed of a guide rail that is freely fixed and has a cored bar embedded in wear-resistant resin.

[0013]

According to the rail device for a sludge attractor according to claim 1 of the present invention, the guide rail is provided on the rail laid in the sedimentation and the rail device for a sludge attractor according to claim 2. For example, the guide rails are detachably fixed to the bottom of the sedimentation basin, but the guide rails are made of wear-resistant resin and a cored bar embedded in them, so they have excellent durability and guide The wear-resistant resin that composes the rail is retained by the core metal and does not undergo wavy deformation regardless of the temperature, so the rail device for sludge trapper according to claim 1 has a small number. Even if the guide rails are fixed with a small number of anchor bolts and nuts, the corrugated deformation can be suppressed.

[0014]

【Example】

 Hereinafter, an embodiment of a rail device for a sludge attractor according to claim 1 of the present invention will be described with reference to FIG. Since the main configuration of the sludge scraper according to this embodiment is the same as the configuration described in the section of the prior art, only the different points, that is, the configuration of the rail device will be described.

That is, reference numeral 1 shown in the drawing is an anchor bolt, to which a base plate 2 made by laying a steel rail 3 having a well-known cross-sectional shape is fixed, and at the same time, an upper portion of the rail 3 described above. It is buried in the concrete C that forms the bottom of the sedimentation pond with the exposed area. A female screw is threaded on the rail 3 at a center position in the width direction. The female screw is threaded at a predetermined interval along the longitudinal direction of the rail 3 and is screwed to the female screw. A guide rail 5, which will be described later, is detachably fixed by a rail mounting bolt 4.

The guide rail 5 includes a cored bar 5b made of flat plate stainless steel having a mounting hole for receiving the lower surface of the head of the guide rail mounting bolt 4, and a cored bar 5b made of stainless steel, and the cored bar 5b. Of the wear resistant resin layer 5a having holes for bolt insertion in the upper surface and the lower surface at positions corresponding to the bolt holes 5c.

As the material of the abrasion resistant resin layer 5a, for example, ultra high molecular weight polyethylene or the like may be adopted. Further, the guide rail 5 can be easily manufactured by inserting the cored bar 5b made of flat plate stainless steel into the abrasion resistant resin 5a that has been pultruded by a pultrusion machine, for example.

It should be noted that what slides in contact with the upper surface of the guide rail 5 is a slide contactor 7 attached to the flight plate 6, and as described in the section of the prior art, this slide contactor 7 is a guide rail. The flight plate 6 is guided by slidingly contacting the upper surface of 5 to scrape the sludge deposited on the surface of the concrete C in the sedimentation basin to a predetermined position.

Hereinafter, the operation mode of the sludge scraper rail device configured as described above will be described. Since the guide rail 5 is made of wear-resistant resin, it has excellent durability. In addition, when the guide rail 5 is replaced, the corrugated metal 5b suppresses the wavy deformation of the wear-resistant resin layer 5a due to the temperature, and the number of the guide rail mounting bolts 4 for mounting the guide rail 5 on the rail 3 is reduced to the conventional one. Since the number of the guide rails 5 can be reduced, the guide rails 5 can be easily replaced by attaching and removing the few guide rail mounting bolts 4.

Next, another embodiment of the rail device for a sludge scraper according to the present invention, which is similar to the above embodiment and has the same function, is designated by the same reference numeral, and a cross-sectional view of its main part is shown. Referring to FIG. 2, this embodiment relates to claim 2.

That is, a cored bar 5b made of flat plate stainless steel in which a bolt hole 5c having a mounting seat for receiving the lower surface of the nut 4a is opened, and the cored bar 5b is embedded so that the bolt hole 5c At the corresponding position, the guide rail 5 composed of the wear-resistant resin layer 5a having holes for bolt insertion on the upper surface and the lower surface is attached to the anchor bolt 4 for mounting the guide rail embedded in the concrete C at the bottom of the sedimentation pond. By screwing the nut 4a, the structure is such that the nut 4a is directly fixed to the surface of the concrete C.

Therefore, since the guide rail 5 is made of wear-resistant resin and has excellent durability, it is replaced less frequently, and when the guide rail 5 is replaced, the guide rail 5 is corrugated due to the temperature of the wear-resistant resin layer 5a. Deformation is suppressed by the core metal 5b, and the number of guide rail mounting anchor bolts 4 for mounting the guide rails 5 on the surface of the concrete C can be reduced. Therefore, the guide rails 5 can be easily replaced by attaching and detaching a small number of nuts 4a. You can

[0023]

[Effect of device]

 As described in detail above, according to the rail device for a sludge attractor according to claim 1 of the present invention, the guide rail is on the rail, and the rail device for a sludge attractor according to claim 2 is according to the present invention. The guide rails are detachably fixed to the bottom of the sedimentation pond, but the guide rails are made of wear-resistant resin and the core metal is embedded in the guide rails. In addition, the wear-resistant resin retains its shape regardless of whether the temperature is high or low due to the core metal and does not undergo wavy deformation.Because the number of fasteners can be reduced compared to the past, there is less sticking. You can easily replace the rails by attaching and removing tools.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a rail device for a sludge attractor according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a rail device for a sludge attractor according to another embodiment of the present invention.

FIG. 3 is a vertical sectional side view of a sedimentation basin in which a sludge scraper according to a conventional example is arranged.

FIG. 4 is a vertical sectional front view of a sedimentation basin in which a sludge scraper according to a conventional example is arranged.

FIG. 5a is an explanatory view of a main part of a rail device for a sludge attractor disclosed in Japanese Utility Model Publication No. 64-967, and FIG. 5b is a cross-sectional view of the rail device.

FIG. 6 is an explanatory view of a main part configuration of a rail device for a sludge attractor disclosed in Japanese Utility Model Laid-Open No. 2-191510.

[Explanation of symbols]

1 ... Anchor bolt 2 ... Base plate 3 ... Rail 4 ... Guide rail mounting bolt or anchor bolt, 4
a ... nut 5 ... guide rail 5a ... wear-resistant resin layer 5b ... core metal 5
c ... Bolt hole 6 ... Flight plate 7 ... Sliding contact C ... Concrete

Claims (2)

[Scope of utility model registration request] 1. A rail device of a sludge attractor for guiding a flight plate that is laid in a sedimentation basin and repeatedly run by an endless chain to draw up sludge settling in the sedimentation basin. A rail device for a sludge attractor, comprising: a rail to be laid and a guide rail that is detachably fixed to the upper portion of the rail and has a cored bar embedded in a wear-resistant resin. 2. A rail device of a sludge attractor for guiding a flight plate that is laid in a sedimentation pond and is repeatedly run by an endless chain to guide a flight plate that scrapes up the sludge deposited in the sedimentation pond. Sludge comprising an anchor bolt whose lower part is embedded in concrete, and a guide rail which is detachably fixed by a nut screwed to the anchor bolt and has a cored bar embedded in wear-resistant resin. Rail device for scratching machines.