JP4828622B2 - Width adjusting bar screen and drainage pump protection system with ridge width adjusting bar screen - Google Patents

Description

  The present invention relates to, for example, a bar screen that is installed in a flow channel such as a water discharge channel and captures dust or the like in flowing water flowing in the flow channel, and a drain pump protection system including the bar screen.

  In general, in the water discharge channel, as shown in FIG. 12, an openable / closable discharge gate G is installed so that the flowing water flowing in the flow channel R can be blocked, and the flow channel R upstream of the discharge gate G is installed. It is aimed to prevent the dust etc. from flowing out to the discharge destination on the downstream side of the discharge gate G by setting up the bar screen 10 to catch the dust in the flowing water flowing in the flow path R. .

  As shown in FIG. 13, the bar screen 10 has a plurality of vertical bars 11 each having a long, substantially rectangular flat plate shape having a predetermined thickness, and a substantially central portion in the width direction (depth direction in FIG. 13). A plurality of pillars 12 (support members) having a cylindrical shape are penetrated and fixed in parallel, and the vertical bar 11 is parallel to the flowing water direction T (from the upstream side to the downstream side of the flow path R). And it is arrange | positioned so that it may extend in an up-down direction. At this time, the vertical bars 11 fixed by the support columns 12 are located at a predetermined distance L from each other, and the predetermined distance L becomes the eye width L of the bar screen 10.

  Further, in such a discharge channel, when the water level H of the discharge destination located downstream of the discharge gate G increases, the discharge gate is prevented in order to prevent the flowing water flowing in the flow path R from flowing backward to the upstream side. After closing G and flowing water flowing through the flow path R, the drainage pump P is used to drain water from the upstream side to the downstream side of the discharge gate G.

  However, since the bar screen 10 installed in such a water discharge channel generally has a relatively large mesh width L, it captures dust and the like that can pass through the mesh width L. I couldn't. For example, when the drainage gate G is closed as described above, when drainage is performed from the upstream side to the downstream side of the drainage gate G using the drainage pump P, the drainage pump P may be blocked by dust or the like. was there.

In order to avoid such a problem of the drainage pump P being blocked, it may be possible to install a bar screen with a small mesh width, but the discharge efficiency when the discharge gate G not using the drainage pump P is opened is lowered. Resulting in.
In addition, a bar screen with a large mesh width and a bar screen with a small mesh width are provided side by side, and it is selected according to the water level of the discharge destination, that is, according to the opening / closing of the discharge gate G (use / nonuse of the drainage pump P). Therefore, the device itself tends to be a large scale, and the efficiency is low both in terms of cost and space.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a drainage pump protection system including a mesh width adjustment bar screen and a mesh width adjustment bar screen that can easily adjust the mesh width.

According to the first aspect of the present invention, a plurality of vertical bars are connected in parallel via a support member and are standing in the flow path to capture dust or the like in the flow path. In the bar screen, the support member is composed of a comb-shaped member in which a plurality of grooves are formed at predetermined intervals, and the vertical bar is selectively fitted into the grooves, and the positioning is performed by the grooves. The eye width of the bar screen is selectively adjustable.
With such a configuration, by selectively fitting the detachable bar to the plurality of grooves formed in the comb-tooth member, the interval between the vertical bars can be adjusted, and a bar screen having a desired mesh width can be obtained. Obtainable.
Moreover, a bar screen can be comprised with the members of simple structures, such as a comb-tooth member and a vertical bar.

According to a second aspect of the present invention, there is provided the mesh width adjusting bar screen, wherein a plurality of vertical bars are connected in parallel via a support member and are standing in the flow path to capture dust or the like in the flow path. The vertical bar is positioned between the fixed bar and the fixed bar fixed to the support member, and is slidable in the arrangement direction of the vertical bar with respect to the support member. It is characterized by comprising a movable bar.
With such a configuration, the screen width of the bar screen can be adjusted by sliding the movable bar with respect to the fixed bar as necessary. Moreover, the eye width of the bar screen can be locally adjusted by sliding the movable bars independently.

Further, in the eye width adjustment bar screen according to claim 2, by sliding a movable screen portion formed by integrally connecting the movable bars with respect to a fixed screen portion formed by integrally connecting the fixed bars. The screen width of the bar screen may be adjustable.
With such a configuration, the screen width of the bar screen can be easily adjusted by simply sliding the movable screen portion with respect to the fixed screen portion as necessary.

The drainage pump protection system according to claim 3 is disposed upstream of the discharge gate in a discharge channel provided with a drainage pump that drains water from the upstream side to the downstream side of the discharge gate when the discharge gate is closed. Further, the mesh width adjusting bar screen according to claim 1 or 2 is disposed upstream of the suction port of the drainage pump.
When such a drainage pump protection system is used, when drainage is performed using a drainage pump, small dust etc. can be captured by adjusting the mesh width of the mesh width adjusting screen to be small.
In addition, in the drainage pump protection system according to claim 3, instead of the mesh width adjusting bar screen according to claim 1 or 2, an existing bar screen to which an eye width adjusting member of the bar screen is attached is used. It may be used as a width adjustment bar screen.

   As described above, according to the eye width adjustment bar screen according to claim 1, a desired eye width can be obtained by selectively fitting the detachable bar into the plurality of grooves formed in the comb member. The bar screen can be obtained, and furthermore, since it is constituted by a simple structure such as a comb-shaped member and a vertical bar, it is possible to save labor for the manufacturing process.

According to the mesh width adjusting bar screen according to claim 2, since the mesh width of the bar screen can be adjusted by sliding the movable bar with respect to the fixed bar, the movable bar can be adjusted as necessary. Can be slid with respect to the fixed bar to adjust the screen width of the bar screen.
According to the drainage pump protection system of the third aspect, since the mesh width adjusting bar screen according to the first or second aspect is disposed upstream of the drainage pump, the drainage pump is used. In the case of draining, by reducing the mesh width of the mesh width adjusting screen, small dust etc. can be captured and the drainage pump can be prevented from being blocked.

It is a principal part enlarged front view of the existing bar screen with which the mesh width adjustment member of the bar screen by this 1st embodiment was mounted | worn. It is the sectional view on the AA line in FIG. It is a principal part enlarged front view of the existing bar screen with which the mesh width adjustment member of the bar screen by this 2nd embodiment was mounted | worn. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a principal part enlarged front view of the existing bar screen with which the mesh width adjustment member of the bar screen by this 3rd embodiment was mounted | worn. It is CC sectional view taken on the line in FIG. It is a principal part expansion perspective view of the mesh width adjustment bar screen by this 4th embodiment. (A) is a front view which shows the state with a large mesh width in the mesh width adjustment bar screen by this 5th embodiment, (b) is a front view which shows the state with a small mesh width of the mesh width adjustment bar screen. (A) is the principal part expanded partial sectional view in Fig.8 (a), (b) is the principal part expanded partial sectional view in FIG.8 (b). (A) is a front view which shows the state with a large mesh width in the mesh width adjustment bar screen by this 6th embodiment, (b) is a front view which shows the state with a small mesh width of the same mesh width adjustment bar screen. (A) is the principal part expanded partial sectional view in Fig.10 (a), (b) is the principal part expanded partial sectional view in FIG.10 (b). It is explanatory drawing which shows a water discharge channel. It is a front view which shows the conventional bar screen.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the same or similar parts as those of the above-described prior art will be denoted by the same reference numerals, and description thereof will be omitted.
In addition, the mesh width adjusting member of the bar screen attached to the existing bar screen will be described as the first to third embodiments of the present invention, and the mesh width adjusting bar screen will be described as the fourth to sixth embodiments of the present invention. .

First, the bar screen mesh width adjusting member according to the first embodiment of the present invention will be described.
FIG. 1 is an enlarged front view of a main part showing an existing bar screen equipped with a mesh width adjusting member according to the first embodiment, and FIG. 2 is a cross-sectional view taken along line AA in FIG.

  The screen width adjusting member 20 of the bar screen according to the first embodiment includes a detachable bar 21 attached to an existing bar screen 10 formed with a mesh width L, as shown in FIGS. The positioning means 23 for positioning and fixing the bar 21 is mainly configured.

  The detachable bar 21 has a long, substantially rectangular flat plate shape having a predetermined thickness, and is substantially the same shape as the vertical bar 11 in the existing bar screen 10. A plurality of cutouts 22 that are open on one side along the width direction (left-right direction in FIG. 2) of the detachable bar 21 are formed at positions corresponding to locations through which the (member) penetrates.

  The notch 22 has a width in the longitudinal direction (vertical direction in FIGS. 1 and 2) of the attaching / detaching bar 21 that is slightly larger than or equal to the diameter of the support column 12, and the bottom 22 </ b> B of the notch 22. Is formed in a semicircular arc shape having the same radius of curvature as the support column 12. As a result, when the detachable bar 21 is fitted into the column 12, the column 12 can be fitted until it passes through the opening 22A of the notch 22 and reaches the bottom 22B.

  Then, the detachable bar 21 configured as described above is fitted into the support column 12 that fixes the vertical bar 11 in parallel with the plurality of notches 22 fitted, that is, the support column 12 is inserted into the notch 22. It is inserted through the opening 22A and is fitted until it contacts the bottom 22B forming the semicircular arc of the notch 22. As a result, the detachable bar 21 is fitted between the adjacent vertical bars 11 of the existing bar screen 10, and the detachable bar 21 is positioned between the vertical bars 11 connected in parallel. The detachable bar 21 is positioned and fixed.

  Here, as shown in FIGS. 1 and 2, the positioning means 23 for positioning and fixing the detachable bar 21 is formed of an R-shaped bent plate that is curved along the outer peripheral surface of the column 12 having a substantially cylindrical shape. The abutting member 24 and a fixing member 25 having a substantially rectangular flat plate shape and bolted to the detachable bar 21 are integrally fixed so as to intersect at right angles to each other at the longitudinal center portion thereof. .

In the state where the detachable bar 21 is positioned and fixed to the support column 12 by the positioning means 23, the contact member 24 made of an R-shaped bent plate is positioned between the adjacent vertical bars 11 as shown in FIGS. Then, the curved surface 24A formed to be curved along the support column 12 is brought into contact with the support column 12, and both end portions 24B in the longitudinal direction are in contact with both of the adjacent vertical bars 11. Yes.
And the fixing member 25 fixed integrally so that it may extend in parallel with the elongate direction of the vertical bar 11, and the detachable bar 21 fitted by the support | pillar 12 in the approximate center part in the longitudinal direction of this contact member 24, The fixing member 25 is fixed by two bolts 26 penetrating both end portions.

  In this way, the detachable bar 21 is fitted between the adjacent vertical bars 11, and the vertical bar is positioned by the positioning means 23 so as to divide the interval L between the adjacent vertical bars 11 into two. 11 is positioned and fixed in parallel, that is, positioned and fixed so that the distance between the adjacent detachable bar 21 and the vertical bar 11 is L / 2. As a result, the existing bar screen 10 formed with the mesh width L is adjusted to the bar screen 10 with the mesh width L / 2.

According to the bar screen mesh width adjusting member 20 configured as described above, the mesh width can be easily adjusted by attaching / detaching the detachable bar 21 to / from the existing bar screen 10 installed in the flow path R. Adjustment, that is, by attaching and attaching the detachable bar 21 to the existing bar screen 10 and positioning and fixing it by the positioning means 23, the eye width L can be changed to L / 2, Further, by removing the detachable bar 21 from the existing bar screen 10, the eye width L / 2 can be changed to L. Furthermore, since the existing bar screen 10 can be used as it is and only the mesh width can be changed, it is very economical.
And since the contact member 24 which makes | forms an R-shaped bending board is used as the positioning means 23 of the mesh width adjusting member 20 in this 1st embodiment, this contact member 24 is between the adjacent vertical bars 11. By contacting both, it is possible to prevent the detachable bar 21 from being displaced and to increase its mounting rigidity.

Next, a description will be given of a bar screen mesh width adjusting member according to a second embodiment of the present invention.
FIG. 3 is an enlarged front view of an essential part showing an existing bar screen equipped with a mesh width adjusting member according to the second embodiment, and FIG. 4 is a sectional view taken along line BB in FIG.
Note that the bar screen mesh width adjusting member 20 according to the first embodiment described above is different from the positioning means 23 for positioning and fixing the detachable bar 21, so only this positioning means will be described. The description of the same or similar parts is omitted.

  In the bar screen mesh width adjusting member 30 according to the second embodiment, the positioning means 33 for positioning and fixing the detachable bar 21 has a substantially rectangular flat plate shape as shown in FIGS. A fixing member 35 that is bolted to the fixing member 35, and a hollow cylindrical abutting member 34 that is integrally fixed so as to stand upright at the center in the longitudinal direction of the fixing member 35. Two combinations of the fixing member 35 are used to position and fix the vicinity of the portion where the notch 22 of the detachable bar 21 is formed.

  In the state in which the detachable bar 21 is positioned and fixed to the support column 12 by the positioning means 33, as shown in FIGS. 3 and 4, the two fixing members 35 are located near the opening 22A side of the notch 22 of the detachable bar 21 from both sides. , 35 so that the detachable bar 21 and the fixing members 35, 35 are bolted together by bolts 26 penetrating both ends of the fixing members 35, 35 in the longitudinal direction.

Cylindrical contact members 34 and 34 fixed so as to stand upright from the central portion in the longitudinal direction of the fixing members 35 and 35 have their front end surfaces 34A and 34A contacted with the vertical bars 11 and 11, respectively. Yes. That is, the end surfaces 34A and 34A forming the ring shape of the contact members 34 and 34 are in contact with the vertical bars 11 and 11, and the contact members 34 and 34 are in contact with both adjacent vertical bars 11. It will be.
In this way, the detachable bar 21 is fitted between the adjacent vertical bars 11, and the vertical bar is positioned by the positioning means 33 so as to divide the interval L between the adjacent vertical bars 11 into two. 11 and positioned in parallel, that is, positioned so that the distance between the adjacent detachable bar 21 and the vertical bar 11 is L / 2. As a result, the existing bar screen 10 formed with the mesh width L is adjusted to the bar screen 10 with the mesh width L / 2.

  According to the mesh width adjusting member 30 of the bar screen having such a configuration, in addition to the same effects as those of the first embodiment described above, the contact member 34 of the positioning means 33 for positioning and fixing the detachable bar 21 is a cylinder. Therefore, the ring-shaped tip end surface 34A comes into contact with the vertical bar 11, so that the displacement prevention effect of the detachable bar 21 can be kept high, and the attachment rigidity of the detachable bar 21 can be kept high. It becomes possible.

Next, a description will be given of a bar screen mesh width adjusting member according to a third embodiment of the present invention.
FIG. 5 is an enlarged front view of an essential part showing an existing bar screen equipped with a mesh width adjusting member according to the third embodiment, and FIG. 6 is a sectional view taken along the line CC in FIG.
The bar screen mesh width adjusting member 20 according to the first embodiment described above is different from the positioning means for positioning and fixing the detachable bar 21. Therefore, only the positioning means will be described and the same. Or the description is abbreviate | omitted about the same part.

  In the bar screen mesh width adjusting member 40 according to the third embodiment, the positioning means 43 for positioning and fixing the detachable bar 21 has a substantially U-shaped plate shape, as shown in FIGS. It has a substantially rectangular flat plate shape with a notch 45 </ b> A that opens on one side, a fixing member 45 that is bolted to the detachable bar 21, and a right angle with the fixing member 45 at both longitudinal ends of the fixing member 45. And abutting members 44, 44 having a substantially rectangular flat plate shape, which are integrally fixed so as to stand upright. Then, by using two combinations of the contact members 44, 44 and the fixing member 45, the vicinity of the portion where the notch 22 of the detachable bar 21 is formed is positioned and fixed, respectively.

  In a state in which the detachable bar 21 is positioned and fixed to the support column 12 by the positioning means 43, the notch 45A provided on one side of the fixing member 45 is replaced with the notch 22 of the detachable bar 21, as shown in FIGS. Is inserted from the opposite direction, and the opening 22A side portion of the notch 22 of the detachable bar 21 is sandwiched between the two fixing members 45, 45 from both sides, and both end portions of the fixing members 45, 45 in the longitudinal direction The detachable bar 21 and the fixing members 45, 45 are bolted together by a bolt 26 penetrating through the bolt.

The contact members 44, 44, 44, 44 that are substantially rectangular flat plates fixed so as to stand upright from both ends in the longitudinal direction of the fixing members 45, 45 vertically extend the front end surfaces 44 A, 44 A, 44 A, 44 A, respectively. It is made to contact | abut to the bars 11 and 11. That is, the linear front end surfaces 44A, 44A, 44A, 44A having a predetermined width of the contact members 44, 44, 44, 44 are in contact with the vertical bars 11, 11, and are adjacent to both adjacent vertical bars 11. The abutting members 44, 44, 44, 44 are abutted at four positions.
In this way, the detachable bar 21 is fitted between the adjacent vertical bars 11 and the vertical bar is positioned by the positioning means 43 so that the distance L between the adjacent vertical bars 11 is divided by two. 11 and positioned in parallel, that is, positioned so that the distance between the adjacent detachable bar 21 and the vertical bar 11 is L / 2. As a result, the existing bar screen 10 formed with the mesh width L is adjusted to the bar screen 10 with the mesh width L / 2.

  According to the mesh width adjusting member 40 of the bar screen having such a configuration, in addition to the same effects as those of the first embodiment described above, the contact member 44 of the positioning means 43 for positioning and fixing the detachable bar 21 includes: Since there are a total of four contact points with respect to the vertical bar 11 in the vicinity of one notch 22 of the detachable bar 21, the detachment of the detachable bar 21 can be more stably and effectively prevented and the detachable The mounting rigidity of the bar 21 can be kept higher.

  In the present invention, the positioning means for the detachable bar 21 is not limited to the shape described in the first to third embodiments described above, and can be any shape as long as the detachable bar 21 is positioned and fixed. However, it is preferable that the positioning means includes an abutting member that abuts against the vertical bar 11 and prevents the detachable bar 21 from being displaced.

  In the first to third embodiments, only one detachable bar 21 is fitted between the vertical bars 11, and the eye width L of the bar screen 10 can be adjusted to L / 2. Without being limited to the above, by inserting a plurality of detachable bars 21 between the vertical bars 11, the mesh width may be further reduced. For example, by inserting two detachable bars 21 between the vertical bars 11, the eye width L may be changed to L / 3. Needless to say, even when a plurality of detachable bars 21 are fitted between the vertical bars 11, the positioning means is preferably composed of a fixing member and a contact member.

Next, a mesh width adjusting bar screen according to a fourth embodiment of the present invention will be described.
FIG. 7 is an enlarged perspective view of a main part showing a mesh width adjusting bar screen according to the fourth embodiment.
As shown in FIG. 7, in the eye width adjustment bar screen 50 according to the fourth embodiment, a plurality of vertical bars 51 having a long, substantially rectangular flat plate shape having a predetermined thickness are connected in parallel via a support member. The support member has a long, substantially rectangular flat plate shape, and has a plurality of slits that are cut to open to one side along the width direction at predetermined intervals M in the long direction. A comb-tooth member 52 having a groove 52A is formed.
Further, the vertical bar 51 fitted into the comb-tooth member 52 has a long, substantially rectangular flat plate shape having a predetermined thickness, and corresponds to the portion fitted into the groove 52A of the comb-tooth member 52 in the width direction. A plurality of groove portions 51 </ b> A opening along one side are formed.

The groove 52A formed in the comb member 52 has a width that is the same as or slightly larger than the predetermined thickness of the vertical bar 51 fitted in the comb member 52, and the groove 51A formed in the vertical bar 51 is also The comb teeth member 52 has a width equal to or slightly larger than a predetermined thickness.
Then, the groove 51A opened on one side in the width direction of the vertical bar 51 is engaged with the groove 52A formed in the comb member 52, and the comb member 52 and the vertical bar 51 are fitted so as to be orthogonal to each other. Will be included.
Further, when removing the vertical bar 51 from the comb-tooth member 52, the vertical bar 51 can be removed by pulling out in the direction opposite to the direction in which the vertical bar 51 is fitted into the comb-tooth member 52.

According to the eye width adjustment bar screen 50 configured as described above, a desired eye width can be easily obtained by selectively fitting the vertical bars 51 into the groove portions 52A formed in the comb teeth member 52 at predetermined intervals M. Can be obtained.
Specifically, when the vertical bars 51 are fitted in all the groove portions 52A of the comb member 52, the interval between the vertical bars 51 becomes M, and a bar screen having a mesh width M can be obtained. When every other groove 52A of the member 52 is selected and the vertical bars 51 are fitted, the interval between the vertical bars 51 is 2M, and a bar screen having a mesh width of 2M can be obtained. In this way, the screen width of the bar screen can be changed to a value that is a multiple of M. At the time of design, the predetermined interval M at which the groove 52A is formed in the comb-tooth member 52 can be set as appropriate, so You can get a bar screen.

  In addition, when the mesh width adjusting bar screen 50 according to the fourth embodiment is installed in the flow path R, the opening direction of the groove portion 52A in the comb member 52 is directed to the upstream side in the flowing water direction T. Preferably, since the vertical bar 51 is pressed by the flowing flowing water, the possibility that the vertical bar 51 is detached from the comb-tooth member 52 can be reduced.

Next, a mesh width adjusting bar screen according to a fifth embodiment of the present invention will be described.
FIG. 8 is a front view of the eye width adjustment bar screen according to the fifth embodiment, and FIG. 9 is an enlarged partial cross-sectional view of the main part in FIG.
As shown in FIGS. 8 and 9, the eye width adjustment bar screen 60 according to the fifth embodiment includes a column 62 (support member) in which a plurality of vertical bars 61 having a substantially rectangular plate shape having a predetermined thickness form a substantially columnar shape. ) Are connected in parallel.
Here, the plurality of vertical bars 61 connected via the support column 62 are fixed to the support column 62 at predetermined intervals L and cannot be moved with respect to the support column 62, and the fixed bar 61A. One movable bar 61B is provided between the movable bars 61B. The movable bars 61B are slidable in the direction in which the vertical bars 61 are arranged.

The fixing bar 61A is fixed by being penetrated by a plurality of pillars 62 having a substantially columnar shape at a substantially central portion in the width direction (depth direction in FIGS. 8 and 9). As shown in the partial cross-sectional view of FIG. 9, the movable bar 61 </ b> B has, for example, a hole 63 having a diameter larger than that of the column 62 at a substantially central portion in the width direction. By being penetrated through, the fixing bar 61A is not fixed to the support column 62 but can be slid horizontally between the fixing bars 61A.
Furthermore, a positioning member 64 having a hollow cylindrical shape standing upright from the peripheral portion is formed at the peripheral portion of the hole 63 of the movable bar 61B, and a horizontal slide beyond a predetermined distance of the movable bar 61B is performed. It is supposed not to be broken.

Among the plurality of vertical bars 61, the fixed bars 61 </ b> A fixed to the support columns 62 at a predetermined interval L are connected to each other by the support columns 62 to form the fixed screen portion X.
Further, the movable bars 61B located between the fixed bars 61A are connected to each other by some fixing means (not shown), and can be slid integrally with the support column 62, that is, the fixed screen portion X The movable screen portion Y can be slid horizontally.

When the eye width adjustment bar screen 60 having such a configuration is used as a normal bar screen having a large eye width, as shown in FIGS. 8 (a) and 9 (a), the movable screen portion Y is provided. The movable bar 61B to be configured may be in close contact with the fixed bar 61A that configures the fixed screen portion X. In this state, a bar screen formed with a mesh width L is formed.
And when it becomes necessary to use it as a bar screen having a smaller mesh width than this, as shown in FIGS. 8 (b) and 9 (b), the movable screen portion Y is moved with respect to the fixed screen portion X. The movable bar 61B constituting the movable screen portion Y is respectively slid by some sliding means (not shown) (manual operation or mechanical operation) until the positioning member 64 comes into contact with the one fixed bar 61A, so that the movable bar 61B is fixed. It can be moved to an intermediate point between them, and a bar screen with an eye width of L / 2 can be obtained.
At this time, the slide means may include a control means that can appropriately set the slide distance of the movable screen portion Y with respect to the fixed screen portion X.

  According to the mesh width adjustment bar screen 60 as described above, the movable bar 61B can be positioned in the middle of the fixed bars 61A simply by sliding the movable screen Y laterally relative to the fixed screen X. The screen width of the bar screen can be easily adjusted.

In the eye width adjustment bar screen 60 according to the fifth embodiment, the movable screen 61 is formed by integrally connecting the movable bar 61B by a fixing means (not shown). However, the present invention is not limited to this, and the movable bars 61B may be independently slidable in the arrangement direction of the vertical bars 61 without integrally connecting the movable bars 61B to each other.
In this case, for example, when a specific movable bar 61B is slid horizontally, only the portion of the horizontally slidable movable bar 61B becomes the eye width L / 2, and the eye width L is locally increased on the bar screen having the eye width L. A portion to be / 2 can also be formed.

Further, in the eye width adjustment bar screen 60 according to the fifth embodiment, the number of movable screen portions Y that can be moved with respect to the fixed screen portion X is one. However, the number is not limited to this, but two or more. The movable screen portion Y may be included.
For example, two movable bars 61B are positioned between the fixed bars 61A fixed to the column 62 at a predetermined interval L, and each of the two movable bars 61B can be slid independently. If the movable screen portion and the second movable screen portion are configured, the eye width L can be adjusted to L / 2 or L / 3.

Next, a mesh width adjusting bar screen according to a sixth embodiment of the present invention will be described.
FIG. 10 is a front view of the eye width adjustment bar screen according to the sixth embodiment, and FIG. 11 is an enlarged partial cross-sectional view of the main part in FIG.
In addition, about the part which is the same as that of the mesh width adjustment bar screen 60 by above-mentioned 5th embodiment, or the same part, the description is abbreviate | omitted using the same code | symbol.

As shown in FIGS. 10 and 11, the eye width adjustment bar screen 70 according to the sixth embodiment includes a plurality of vertical bars 61 connected in parallel via support columns 62 (support members). A movable support 62 </ b> A having substantially the same shape as the support 62 is positioned between the support 62 so as to be arranged in parallel with the support 62.
Here, the plurality of vertical bars 61 connected via the support columns 62 are fixed to the support columns 62 at predetermined intervals L and cannot be moved with respect to the support columns 62, as in the fifth embodiment. Each of the fixed bars 61A is provided between the fixed bars 61A and a movable bar 61B that can slide horizontally in the arrangement direction of the vertical bars 61.
The movable bar 61B is integrally connected to each other by the movable column 62A to form the movable screen portion Y, and the fixed bar 61A is integrally connected to each other by the column 62 to form the fixed screen portion X.

Further, as shown in the partial cross-sectional view of FIG. 11, for example, the movable bar 61 </ b> B has a hole 63 having a diameter larger than that of the support 62 at a substantially central portion in the width direction. The movable bar 61B is not fixed to the column 62 by penetrating the column 62, and a hole having a diameter larger than that of the movable column 62A is formed in the fixed bar 61A at a substantially central portion in the width direction. The fixed bar 61A is not fixed to the movable column 62A by passing the hole through the movable column 62A. As a result, the movable screen portion Y including the movable bar 61B connected by the movable column 62A is formed. In this state, it is possible to slide horizontally with respect to the fixed screen portion X.
Further, a positioning member 64 is formed at the peripheral edge of the hole 63 of the movable bar 61B, so that the lateral slide beyond the predetermined distance of the movable bar 61B is not performed.

  When the eye width adjustment bar screen 70 having such a structure is used as a normal bar screen having a large eye width, as shown in FIGS. 10 (a) and 11 (a), the movable screen portion Y is provided. The movable bar 61B to be formed is brought into close contact with the fixed bar 61A to form the fixed screen portion X to form a bar screen having a mesh width L, and it is necessary to use it as a bar screen having a smaller mesh width. In this case, as shown in FIGS. 10B and 11B, the movable screen portion Y is slid horizontally with respect to the fixed screen portion X by the same sliding means as in the fifth embodiment. The movable bar 61B constituting the movable screen portion Y can be moved to an intermediate point between the fixed bars 61A, respectively, and the eye width is L / 2. Can be obtained bar screen was.

  According to the mesh width adjusting bar screen 70 as described above, the movable bar 61B is fixed to the fixed bars 61A by simply sliding the movable screen Y sideways with respect to the fixed screen X, as in the fifth embodiment. It is possible to adjust the width of the bar screen easily.

  In the sixth embodiment, the columns 62 and the movable columns 62A are alternately arranged. However, the present invention is not limited to this, and the position and the number of the movable columns 62A may be arbitrarily set. Needless to say, two or more movable screen portions Y may be provided.

  In addition, when the discharge gate G is closed as shown in FIG. 12, the width adjustment bar screens 50, 60, 70 according to any of the fourth to sixth embodiments of the present invention described above are arranged upstream of the discharge gate G. In the drainage channel provided with the drainage pump P for draining from the side to the downstream side, when the drainage gate G is disposed upstream of the suction port of the drainage pump P disposed upstream of the drainage gate G, the discharge gate G is opened. When the drainage pump P is not used, the drainage gate G is used as a wide-grating adjustment bar screen 50, 60, 70, while the drainage gate G is drained with the discharge gate G closed. What is necessary is just to adjust the eye width of the eye width adjustment bar screens 50, 60, and 70 to be small immediately.

  When the drainage pump protection system having such a configuration is used, the screen width of the bar screen can be easily changed according to whether the drainage pump P is used or not used. It does not unnecessarily decrease the discharge efficiency by using it as a bar screen, and when using the drainage pump P, the drain pump P is blocked by adjusting the bar screen mesh width to catch small dust etc. It is possible to reduce the risk of being lost.

10 Bar screen 11 Vertical bar
12 props
20, 30, 40 Bar screen mesh width adjusting member 21 Detachable bar
22 Notch
23, 33, 43 Positioning means
24, 34, 44 Contact member
25, 35, 45 Fixing member
50 Width adjustment bar screen
51 Vertical bar
51A Groove
52 comb teeth
52A Groove
60,70 Width adjustment bar screen
61 Vertical bar
61A fixed bar
61B Movable bar
62 prop
62A movable strut
X Fixed screen
Y movable screen

Claims (3)

A plurality of vertical bars are connected in parallel via a support member, and are standing up in a flow path to capture dust and the like in the flow path,
The support member is composed of a comb member having a plurality of grooves formed at predetermined intervals.
The vertical width bar is selectively fitted into the groove portion, and the positioning of the vertical bar is performed by the groove portion, so that the eye width of the bar screen can be selectively adjusted. screen. A plurality of vertical bars are connected in parallel via a support member and are standing in the flow path to capture dust etc. in the flow path,
The vertical bar includes a fixed bar fixed to the support member, and a movable bar positioned between the fixed bars and slidable in the arrangement direction of the vertical bar with respect to the support member. Eye width adjustment bar screen. In the drainage channel provided with a drainage pump that drains water from the upstream side to the downstream side of the discharge gate when the discharge gate is closed, the upstream side of the suction port of the drainage pump disposed upstream of the discharge gate, A drainage pump protection system, wherein the mesh width adjusting bar screen according to 1 or 2 is disposed.

Images