JP5722974B2 - Water channel installation type screen structure - Google Patents

Description

  The present invention relates to a structure of a water channel installation type screen that is used by being installed in a water channel, and more particularly, to a structure of a water channel installation type screen that can prevent clogging of dust and simplifies production.

  Conventionally, as a structure of a water channel installation type screen in which a plurality of bars are arranged side by side, for example, in Patent Document 1, a bar screen of an automatic dust remover is separately manufactured on the inflow side of a flat screen bar base material. An anti-clogging type screen is disclosed in which a fitting member having a U-shaped cross-section is fitted and integrated so that the size of the opening on the outflow side of the screen is increased. By this technique, a fine screen in an automatic dust remover is disclosed. It is said that it is possible to prevent clogging of foreign matter in the opening portion.

  However, since the blocking prevention type screen disclosed in Patent Document 1 has a structure that requires a fitting member that is separate from the bar, the number of parts is increased, and the fitting member is used when the screen is manufactured. It is said that the work of fitting to the bar has to be performed, and the effect in terms of simplification of manufacturing is thin.

  Therefore, as a technique for solving this problem, Patent Document 2 includes a plurality of bars arranged side by side, and rake teeth for scraping scrapes are inserted from the upstream side into each opening portion. A structure of a water channel installation type screen, the first bar having a rear end portion located downstream of the tip of the rake tooth, and the rear end portion at the same position or upstream with respect to the tip of the rake tooth A structure of a screen is disclosed, in which second bars located closer to each other are alternately arranged.

  According to this structure, since the rake teeth always pass through the openings formed by the side surfaces of the first bar and the second bar, clogging of the residue does not occur, and the teeth are not clogged. The downstream opening that does not reach is formed with a large opening dimension by the side surfaces of the first bars that are sufficiently separated from each other, so that clogging of the residue does not occur.

Japanese Utility Model Publication No. 06-85423 Japanese Patent No. 4644154

  However, the structure of the screen disclosed in the above-mentioned Patent Document 2 is to produce a first bar, a second bar, and a bar having completely different shapes. Then, it was said that there was no such effect.

  The present invention is for solving the above-described problems, and provides a water channel installation type screen structure that can prevent clogging of dust at the opening portion and can also simplify the production of the screen. is there.

In order to achieve the above object, the present invention takes the following technical means.
That is, the invention according to claim 1 is a water channel installation type screen structure in which a plurality of bars are arranged side by side, and rake teeth for scraping dust are inserted from the upstream side into each opening portion. Is one side of the first flat portion on one end side, and n (n is an integer equal to or greater than 1) comb tooth portions composed of a pair of a hollow portion and a second flat portion, A water channel that is formed toward the other end along the longitudinal direction, and in the state where a plurality of the bars are arranged side by side, adjacent bars are opposite to each other in the longitudinal direction. It is an installation type screen structure.

  The invention according to claim 2 is a water channel installation type screen structure in which a plurality of bars are arranged side by side, and rake teeth for scraping dust are inserted from the upstream side into each opening portion. Is one side of the first flat portion on one end side, and n (n is an integer equal to or greater than 1) comb tooth portions composed of a pair of a hollow portion and a second flat portion, It is formed toward the other end along the longitudinal direction. In a state where a plurality of the bars are arranged side by side, a predetermined bar of the bars is opposite to the other bars in the longitudinal direction. It is the channel installation type screen structure characterized by having.

  Further, the invention according to claim 3 is the water channel installation type screen structure according to claim 1 or 2, wherein in the longitudinal direction of the bar, the length of the first flat portion is a, and the length of the recess portion. The relationship is a + b ≦ c, where b is the length and c is the length of the second flat portion. And invention of Claim 4 is the waterway installation type screen structure of any one of Claims 1-3, Comprising: The said bar is formed in each bar in the state arranged in multiple numbers. It is characterized in that the bottom side of the recess is arranged so as to be located at the same position or upstream with respect to the tip of the teeth of the rake.

  Further, the invention according to claim 5 is the water channel installation type screen structure according to any one of claims 1 to 4, wherein the front end portion on the upstream side of the bar has an arc shape in a side view. It is a feature. The invention according to claim 6 is the water channel installation type screen structure according to any one of claims 1 to 4, wherein the front end portion on the upstream side of the bar becomes wider in a side view toward the upstream side. It is characterized by having.

  According to the present invention, it is possible to prevent clogging of dust at the opening portion, and furthermore, since the bar constituting the screen is sufficient in one shape, the manufacture of the screen can be simplified.

It is the front view which showed the screen which consists of embodiment of the channel installation type screen structure which concerns on this invention. It is a top view which shows the shape of the bar in embodiment of the channel installation type screen structure which concerns on this invention, (a) and (b) are made into the mutually opposite direction in a longitudinal direction, respectively. The screen which consists of embodiment of the channel installation type screen structure concerning this invention is shown, (a) is AA sectional drawing of FIG. 1, (b) is BB sectional drawing of FIG. The screen which consists of embodiment of the channel installation type screen structure concerning this invention is shown, (a) is CC sectional drawing of FIG. 3, (b) is DD sectional drawing of FIG. The screen which consists of other embodiment of the waterway installation type screen structure which concerns on this invention is also a figure applicable to CC sectional drawing in FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a sectional side view which showed the screen which consists of embodiment of the channel installation type screen structure based on this invention, (a) is the shape where the front end part of the upstream of a bar is wide toward the front-end | tip, (b) is the upstream of a bar The front end on the side is arcuate, and (c) shows that the front end on the upstream side of the bar is square.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a screen comprising an embodiment of a channel installation type screen structure according to the present invention, and FIG. 2 is a plan view showing the shape of a bar in the embodiment of the channel installation type screen structure according to the present invention. (A) and (b) are respectively opposite to each other in the longitudinal direction.

  FIG. 3 shows a screen comprising an embodiment of the channel-installation type screen structure according to the present invention, wherein (a) is a cross-sectional view taken along the line AA in FIG. 1, and (b) is a cross-sectional view taken along the line BB in FIG. FIG. 4 is a cross-sectional view, and FIG. 4 shows a screen comprising an embodiment of the channel-installed screen structure according to the present invention, wherein (a) is a cross-sectional view taken along the line CC in FIG. 3, and (b) is D in FIG. It is -D sectional drawing.

  Regarding the reference numerals, 10 is a channel-installed screen, 12 is a bar, 14 is an opening, 16 is a rake, 18 is a rake tooth, 20 is a drive mechanism, 22 is a chain, 24 is a shielding plate, and 26 is a rear end. 27 is a first flat portion, 28 is a recessed portion, 30 is a second flat portion, 32 is a comb tooth portion, 34 is a connecting hole, 36 is a connecting rod, 38 is an upper screen receiver, 40 is a lower screen receiver, Reference numeral 42 denotes a front end portion.

  The water channel installation type screen 10 in this embodiment is installed in a water channel having a rectangular cross section, and is formed by arranging a plurality of bars 12 side by side in the water channel width direction as shown in FIG. Between the water channel installation type screen 10, a shielding plate 24 is installed. In addition, as shown in FIG. 3, the water channel installation type screen 10 is installed with an inclination so that the upper side is located closer to the downstream side.

  And as shown to Fig.4 (a), the tooth | gear 18 of the rake | rake 16 for dust removal is inserted in the opening part 14 between the bars 12 from the upstream. The rake 16 is a plate-like member extending in the water channel width direction, and a plurality of teeth 18 are formed at equal intervals corresponding to the interval between the bars 12.

  Subsequently, in the present embodiment, the drive of the rake 16 is spanned over the drive mechanism 20 and the drive mechanism 20 respectively provided on the ceiling section and the bottom of the water channel, as indicated by a one-dot chain line in FIG. This is done by attaching the rake 16 to the chain 22. Then, by rotating the upper drive mechanism 20 counterclockwise, the rake 16 moves upward in the water channel installation type screen 10 and scrapes the dust on the water channel installation type screen 10.

  Next, as shown in FIG. 2 (a), the bar 12 constituting the water channel installation type screen 10 in the present embodiment has a horizontally long plate shape as viewed from above. 3 and the comb-tooth part 32 which consists of a pair of the hollow part 28 and the 2nd flat part 30 are formed continuously in the longitudinal direction toward the other end. Has been. In the drawing, a indicates the length of the first flat portion 27, b indicates the length of the recessed portion 28, and c indicates the length of the second flat portion 30.

  On the other hand, FIG. 2B shows a state in which the bars 12 in FIG. 2A are opposite in the longitudinal direction. When these bars are adjacent to each other in the same direction as shown, The positions of the first flat part 27 and the recessed part 28 in (a) correspond to the position of the second flat part 30 in (b), and the second flat part 30 in (a) is in the middle. Corresponds to the position of the recessed portion 28 in (b), and on the right side in the drawing, the position of the second flat portion 30 in (a) corresponds to the first flat portion 27 in (b) and the recessed portion. This corresponds to the position of the portion 28.

  Subsequently, as shown in FIG. 4 (a), the bars 12 are arranged in parallel at a predetermined interval to form the water channel installation type screen 10, but the adjacent bars 12 are alternately arranged. They are arranged side by side in opposite directions in the longitudinal direction. Here, in FIG. 4 (a), the broken line portion represents the recess 28 of the bar 12, and the corresponding portion of the bar 12 adjacent to the bar 12 is the solid line, that is, the second flat portion. 30.

  Then, the teeth 18 of the rake 16 are inserted into each of the opening portions 14 between the bars 12, and in this embodiment, the tips of the teeth 18 are upstream of the bottom side position of the recessed portion 28 of the bar 12. (It may be the same position). In this way, if adjacent bars 12 are alternately arranged in parallel in opposite directions in the longitudinal direction, the opening portions 14 on the upstream side of the bottom side positions of the recessed portions 28 formed by the side surfaces of the bars 12 are arranged. Since the teeth 18 of the rake 16 pass, clogging of dust does not occur.

  Then, the opening portion 14 closer to the downstream side than the bottom position of the recess portion 28 to which the teeth 18 of the rake 16 do not reach becomes the second flat portions 30 of the other bars 12 through the recess portion 28 of the bar 12, Since it is sufficiently separated, dust clogging will not occur. In addition, if c shown in the figure is designed so that a + b ≦ c, the correspondence between (a) and (b) becomes accurate, and the clogging of dust between the bars 12 is effectively prevented. It becomes possible.

  Subsequently, as shown in FIG. 3, each of the bars 12 is formed with a connecting hole 34 penetrating in the water channel width direction. As shown in FIG. 4B, each connecting hole 34 of the bar 12 is formed in each connecting hole 34. The bar 36 is connected to each other by passing through the connecting rod 36. In addition, the bar 12 is fixed to each of the upper screen receiver 38 and the lower screen receiver 40 spanned over the shielding plate 24 by welding or the like at predetermined locations of the second flat portion 30.

  As another embodiment of the present invention, as shown in FIG. 5, when a plurality of bars 12 are arranged side by side, the bar 12 installed at an arbitrary position is opposite to the other bars 12 in the longitudinal direction. You may do it. In other words, in the present embodiment, the fourth bar and the eighth bar 12 from the top are opposite to the other bars 12 in the figure. A portion indicated by a broken line means a hollow portion 28 of the bar 12, and a corresponding portion of the bar 12 adjacent to the bar 12 means a solid line, that is, the second flat portion 30.

  Next, another embodiment of the present invention will be described with reference to FIG. FIG. 6 is a side sectional view showing a screen comprising an embodiment of the channel-installation type screen structure according to the present invention, in which (a) is a shape in which the front end portion on the upstream side of the bar is wide toward the tip, (b) The front end portion on the upstream side of the bar has an arc shape, and (c) shows that the front end portion on the upstream side of the bar has a square shape.

  The bar 12 in the embodiment of the present invention is configured as described above, but the shape of the front end portion 42 located on the upstream side of the bar 12 is first described with reference to the bar 12 shown in FIG. Unlike the embodiment, the shape of the front end portion 42 is wide toward the tip. The thickness of the bar 12 has a relationship of t1> t2. In the figure, the broken line portion represents the recess 28.

  Next, in the bar 12 shown in (b), the shape of the front end portion 42 is an arc shape, and the thickness of the bar 12 has a relationship of t1> t2. By adopting these shapes, the bar 12 having the shape of the front end portion 42 similar to that of the above-described embodiment shown in (c) (the front end portion 42 is rectangular and the thickness is in a relationship of t1 = t2). It has been found that there is an effect that clogging is less likely to occur than in the case of using it.

  As described above, according to the channel installation type screen structure according to the present invention, since the clogging can be effectively prevented even if the bar 12 is manufactured in one shape, the channel installation type screen itself is manufactured. Costs can be greatly reduced.

  In the present embodiment, the vertical pulling screen that is juxtaposed in the channel width direction in the state where the bar 12 is standing is described. However, for example, a horizontal pulling screen that juxtaposes the bar 12 in the vertical direction can also be used. The present invention is applicable.

DESCRIPTION OF SYMBOLS 10 Waterway installation type screen 12 Bar 14 Opening part 16 Rake 18 Rake teeth 20 Drive mechanism 22 Chain 24 Shielding plate 26 Rear end part 27 First flat part 28 Depressed part 30 Second flat part 32 Comb tooth part 34 Connection Hole 36 Connecting rod 38 Upper screen receiver 40 Lower screen receiver 42 Front end

Claims (6)

In the water channel installation type screen structure in which a plurality of bars are arranged side by side, and rake teeth for scraping dust are inserted from the upstream side into each opening part,
The bar has, on one side thereof, a first flat portion on one end side and a comb tooth portion composed of a pair of a hollow portion and a second flat portion, and n (n is an integer equal to or greater than 1). Are formed along the longitudinal direction toward the other end,
In a state where a plurality of the bars are arranged side by side, adjacent bars are opposite to each other in the longitudinal direction. In the water channel installation type screen structure in which a plurality of bars are arranged side by side, and rake teeth for scraping dust are inserted from the upstream side into each opening part,
The bar has, on one side thereof, a first flat portion on one end side and a comb tooth portion composed of a pair of a hollow portion and a second flat portion, and n (n is an integer equal to or greater than 1). Are formed along the longitudinal direction toward the other end,
In a state in which a plurality of the bars are arranged side by side, a predetermined bar among the bars is opposite to the other bars in the longitudinal direction.   In the longitudinal direction of the bar, when the length of the first flat portion is a, the length of the hollow portion is b, and the length of the second flat portion is c, the relationship is a + b ≦ c. The waterway installation type screen structure according to claim 1 or 2, wherein   In a state where a plurality of the bars are arranged side by side, the bottom part of the hollow part formed in each bar is disposed so as to be located at the same position or upstream from the tip of the teeth of the rake. The waterway installation type screen structure of any one of Claims 1-3 characterized by these.   The water channel installation type screen structure according to any one of claims 1 to 4, wherein a front end portion of the upstream side of the bar has an arc shape in a side view.   The water channel installation type screen structure according to any one of claims 1 to 4, wherein a front end portion of the upstream side of the bar is wider in a side view toward the upstream side.

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