JP3088344B2 - Water channel installation type screen and water channel installation type crushing device provided with the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterway installation type screen which is installed in a sewerage or the like and guides and screens impurities in a water flow. Further, the present invention relates to a waterway-installed crushing apparatus provided with the screen.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, a water channel installation type crushing device having a built-in biaxial shear crusher in a cubic casing is installed to fill the width of the water channel.
Contaminants in the water stream are crushed and flow downstream. The reason for providing such a waterway installation type crusher is that when large dust and solid matter are sucked into the transfer pump etc. installed downstream, the impeller may be damaged or seizure may occur, resulting in sewage treatment equipment. This is because there is a risk that the operation will not be performed. In other words, this is to ensure the reliability of the equipment by protecting the transfer pump and the like.

[0003] Such a channel-installed crushing apparatus is designed to fit exactly in the width of the channel, but as shown in Fig. 10, when the channel width becomes large, a plurality of units need to be installed.

However, this requires too much equipment,
Equipment costs also increase. In addition, since it is heavy in weight (having several hundred kg), it cannot be easily handled, and its installation work is troublesome and maintenance work is increased. Also, the channel-installed crusher does not always fit exactly in the channel width. Numerous types must be prepared in order to flexibly respond to various types of channel widths.

Further, when a plurality of crushers installed in a water channel are installed to fill the width of the water channel, the flow resistance is increased and the smooth flow is hindered.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a waterway-installed crusher equipped with a waterway-installed screen for guiding foreign substances, which is simple in terms of equipment, and has a simple waterway. The width can be flexibly adjusted, and at the same time, a smooth flow can be ensured.

[0007] The channel-installed screen can be used alone. That is, the water channel installation type screen of the present application forms a screen frame, and also forms a linear screen by stretching a number of wires such as piano wires in the horizontal direction at a certain interval in the vertical direction of the screen frame. And each wire rod
Provide a scraper that can rotate in a substantially horizontal plane between
When the repeller rotates, the tip of the scraper
In such a way as to protrude forward from the ground . When a channel-installed screen is installed with a slope in a channel that narrows as shown in Fig. 8, the impurities that have flowed through the channel are guided by a group of piano wires that are stretched in the horizontal direction, and are directed toward the narrow channel. I will guide you. Therefore, large dust does not stay in the stagnation portion. And as it is captured by the wire
Useful for removing impurities with a scraper.

[0008] The above case, by rotating the multiple scraper, which disturbed the front of the flow of piano wire, contaminants flowed is prevented from stick Wrapped around a piano wire, moreover crushed contaminants Encourage movement to the device side. In other words, a turbulent flow layer is formed in a fixed narrow area in the vertical and horizontal directions in front of the piano wire, so that the floating contaminants can flow in the tangential direction of the rotation of the scraper (the rotation direction is counterclockwise as shown in FIG. 3). At the front of the piano wire, a flow occurs toward the crusher.)
To encourage foreign substances to move.

Such an operation or function can be achieved by arranging a plurality of scrapers in the lateral direction of the screen frame.
By forming the scrapers in an elliptical shape, a disk shape or a boomerang shape having a center of rotation at an eccentric position, by rotating a plurality of scrapers simultaneously in the same phase, a plurality of scrapers are given a phase difference. By rotating the screen frame, the vibrating body is provided on the screen frame, whereby the screen frame is reinforced.

[0010] Further, in an apparatus installed in a water channel for crushing impurities in a water stream, any one of the above-mentioned devices, which is installed around the water channel in which the device is installed in combination with the device at a predetermined angle so as to close the water channel width. This is a waterway installation type crusher in which a waterway installation type screen is connected to the crusher. By combining the waterway installation type crushing device with the above waterway installation type screen, the impurities in the waterway can be reliably and smoothly fed into the crushing device, finely crushed and discharged downstream.
The waterway-installed screen has low resistance, and at the same time ensures a smooth flow. As a result, the equipment on the downstream side is protected.

In this case, if one end of the waterway installation type screen is connected to the waterway installation type crushing device by a hinge, the width of the waterway can be flexibly dealt with and the usability increases.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a channel-installed type crusher provided with a channel-installed screen of the present invention, FIG. 2 is a perspective view when the device is installed in a channel such as a sewer, and FIG. 3 is a horizontal sectional view of the same. It is.

As shown in these figures, a water channel installation type crushing device W is a device in which a biaxial shear crusher 2 is built in a vertically long cubic box-shaped casing 1, and a pair of opposing rotating drive units. The shaft 3 and the driven shaft 4 are provided in parallel in the vertical direction, and a large number of crushing blades 5 provided on each shaft are arranged in a row so as to closely overlap each other. The drive shaft 3 is driven to rotate by a drive motor 6 provided on the casing 1. Crushing blade 5
Is about 20 rpm.

A large rectangular opening 7 is provided on the front side and the back side of the casing 1 with the twin-shaft crusher 2 interposed therebetween, and the twin-shaft crusher 2 is arranged in the opening 7.
When installed in a water channel, foreign substances flowing from the upstream can be finely crushed and flowed downstream.

On the front surface of the casing 1 of the crusher W installed in the waterway, the outer side of the intersection line E (FIG. 3) of the left and right crushing blades 5a and 5b of the twin-screw crusher 2 (FIG. 3). A screen S whose casing 8 has a rectangular shape is connected to a position (opposite side) by a hinge 9. On the front surface of the screen S, a wire 10 such as a piano wire (hereinafter, piano wire 10) is stretched in a horizontal direction. This piano wire 10
Are arranged in rows at intervals of about 4 to 10 mm in the vertical direction. That is, the piano wire 10 is stretched in the horizontal direction on the front surface of the screen S, and the linear screen 10
s is formed, and the contaminants that have flowed are captured and guided in the direction of the twin-shaft crusher 2. Small contaminants that are not captured pass directly through and flow downstream.

As shown in FIGS. 3 and 4, preferably, a scraper 11 rotating in a horizontal plane between the piano wires 10 is provided.
Should be provided. That is, FIGS. 3 and 4 (a) (b) ((a)
As shown in the plan view of the main part and (b) in the front view), the scrapers 11 having an elliptical shape and in which the rotation center 11a is eccentric are arranged side by side at predetermined intervals in the horizontal direction. . The scraper 11 is usually made of plastic or aluminum from the viewpoint of weight reduction. As shown in FIG. 4 (a), the scrapers 11 are arranged at intervals so that they do not interfere with each other when the scrapers 11 arranged side by side rotate simultaneously. In the drawing of FIG. 4A, the elliptical scraper 11 is stored in the screen frame 8 when the rotation angle is 0 °. It sticks out. Each scraper 11 is close to a position where the scraper 11 comes into sliding contact with the upper and lower piano wires 10 when rotated (in other words, each water channel installation type crusher 11 has a thickness close to the vertical interval of the piano wire 10). , This allows piano wire 1
It acts to forcibly remove contaminants trapped at zero. When it is further rotated 90 °, the initial position (rotation angle 0
°) and the storage position is reached. Scraper 11
Is made elliptical because the angle θ between the piano wire 10 and the edge of the elliptical scraper (the tangent at the intersection) is 90 ° or more while the screen 11 intersects the piano wire 10. This is to prevent foreign substances from being interposed between the piano wire 10. The center of rotation 11a of each scraper 11 is decentered at the same position because the intersection of the scraper 11 and the piano wire 10 is
0 along the direction of the twin-screw crusher 2 (FIG. 4 (a)).
For example, as shown by the scraper on the left of
The intersection at 5 °, 90 °, and 135 ° is P1 → P2 → P
3), whereby a lateral moving force can be applied to the contaminants captured on the piano wire 10. As shown in FIG. 3, when the major axis direction of the elliptical scraper 11 is in the same direction as the flow direction, the water passage m between the scrapers 11 is the largest, and the flow is smoothest.

The same applies to the case of a scraper 11A having a disk shape and an eccentric rotation center as shown in FIG. The same applies to the case of the scraper 11B formed in a boomerang (involute curve or spiral arc) shape as shown in FIG.

FIGS. 4 to 6 show an example in which three scrapers are arranged side by side in the horizontal direction. However, when the width of the screen is increased, the number of scrapers may be increased as appropriate. In the example illustrated in FIGS. 4 to 6, three horizontally arranged scrapers 11 are simultaneously rotated in the same direction and in the same phase in a horizontal plane (according to this operation mode, the turbulence of the water flow increases. And the operation described later is strengthened). This can be easily realized by providing rotation motors on rotation shafts provided respectively corresponding to the three scrapers arranged side by side, and synchronizing the rotations of the rotation motors, and saving the driving source. For this purpose, a driving mechanism as shown in FIG.
That is, as shown in FIG. 7 (a), one of three rotating shafts 12 provided corresponding to the three scrapers arranged side by side is used as a driving shaft, and a rotating motor provided on the screen frame 8 is provided on this. 13 are connected. A sprocket 14 is provided at the upper end position of each rotary shaft 12, and the sprocket 1
Endlessly hang the chain 15 between 4a and 14c,
The center sprocket 14b also meshes with the chain 15. When the rotation motor 13 is operated to rotate one drive sprocket 14c, the chain 15 rotates while meshing with each sprocket 14, and each sprocket 14 rotates in synchronization. Thus, the scraper 11 mounted on the rotating shaft 12 mounted on each sprocket 14
Will rotate simultaneously in the same direction. The rotation speed of the scraper 11 is set to about 60 rpm. At the initial scraper mounting stage, all three scrapers 11 arranged side by side are provided with the same phase or are provided with a phase difference from each other (in FIG. 7 (a), a phase difference of 45 ° is provided because the rotating shaft 12 is rectangular. If these are mounted, the three scrapers rotate while always maintaining this phase difference. The technical significance of providing such a phase difference is that, as shown in FIG. 7B, a water passage m is always formed between the scrapers during the rotation of the scrapers, and the flow resistance can be reduced. It is for the same reason that a phase difference is provided between the scrapers arranged in the vertical direction. In addition, as shown in FIG. 3, the scraper 11 is rotated counterclockwise to induce a flow toward the crushing device W.

A large number of scrapers 11 are also provided in the vertical direction, and the scrapers 11 installed at the same position in the vertical direction are mounted on a common rotary shaft 12 that passes vertically. A collar 16 (FIG. 4) is provided between the scrapers 11 arranged at the same position in the vertical direction.
6 to 6) are interposed therebetween, and maintain a mutual interval. Each rotary shaft 12 is simplified as a rectangular shaft so that keys and splines are not required. At the time of assembly, the scrapers 11 and the collars 16 are alternately fitted on the rotating shaft 12 and tightened with end nuts (not shown) at the upper or lower ends of the rotating shaft 12 to fix the scrapers 11 and the collars 16 on the shaft. . The scrapers 11 arranged vertically on the same axis may be set to the same phase,
May be added.

When a large number of scrapers 11 are rotated, the flow on the front surface of the linear screen 10s is disturbed, and the flowing foreign substances are prevented from clinging to the piano wire 10, and the foreign substance crushing apparatus is also used. Encourage movement to the W side. In short, by forming a turbulent layer in a certain narrow area in the vertical and horizontal directions in front of the piano wire 10, the floating impurities can be tangentially flowed by the rotation of the scraper 11 (the rotation direction is counterclockwise as shown in FIG. 3). In front of the piano wire 10, the crusher W
(There is a flow in the direction), which encourages the movement of contaminants. Such an operation or function can be further enhanced by providing the vibrating body 17 on the screen frame 8 and vibrating the piano wire 10 as shown in FIG. As the vibrator 17, a known one used for a vibration sieve or the like is used.

As shown in FIG. 3, the screen S is preferably φ = 30 to 4 with respect to the width B of the channel F to be installed.
It has a width b such that an angle of about 5 ° is formed. Such an installation angle φ is such that when foreign matter is captured on a linear screen composed of a large number of piano wires 10 stretched horizontally in front of the screen S, the foreign matter is formed along the inclination of the linear screen. This is to make it easy to move and be sent to the crushing device W. Even if the width B of the water channel F becomes large to some extent, it can be easily dealt with by reducing the installation angle of the screen S to a range that does not hinder the function. Some types of impurities may not move even if captured by the piano wire 10, but when the scraper rotates and protrudes from the piano wire 10, the scraper separates it and sends it to the crusher, leaving the garbage that can pass through as it is. Flow to the downstream side.

As shown in FIG. 8, the water channel installation type screen S of the present invention can be used alone. That is, the wide water channel F
The stagnation portion 17 formed at the corner of the position where the stagnation sharply narrows is disposed obliquely toward the narrow water channel, so that stagnation of the stagnation portion 18 is prevented. In other words, it is usually necessary to gradually reduce the width in order to eliminate the stagnation portion. However, if it is used in such an aspect, it means that it is possible to sharply narrow down the water channel. When implementing such an application, the availability of a waterway-installed screen increases.

[0024]

The present invention is embodied in the form described above and has the following effects.

The water channel installation type screen can be used alone. In other words, when the channel-installed screen of the present application is installed with an inclination at the stagnation portion of the channel, the foreign substances flowing through the channel by the stretched linear screen can be guided to the narrow channel. . Therefore, large contaminants do not stay in the stagnation portion . And to wire
For scraping off contaminants as they are captured
Useful.

[0026] The case, in particular, by rotating the multiple scraper, which disturbed the front of the flow of piano wire, contaminants flowed is prevented from stick Wrapped around a piano wire, moreover contaminants To the crusher side.

Such an effect is obtained by arranging a plurality of scrapers side by side in the horizontal direction of the screen frame to form the scrapers in an elliptical shape, a disk shape or a boomerang shape having a rotation center at an eccentric position. By simultaneously rotating the plurality of scrapers in phase with each other, and rotating the plurality of scrapers with a phase difference, the vibrating body is provided on the screen frame, thereby enhancing the strength.

Further, by combining the above-mentioned channel-installed screen and the channel-installation type crushing device, impurities in the channel can be reliably and smoothly fed into the crushing device, where they are finely crushed and discharged downstream. Can be. Also,
Since the waterway installation type screen itself has a small resistance to the flow, a smooth flow can be secured at the same time. As a result, protection of the pump equipment and the like on the downstream side is achieved,
The reliability of sewage treatment equipment and the like can be secured.

In this case, if one end of the channel-installed screen is connected to the channel-installation type crushing device by a hinge, the width of the channel can be flexibly adjusted, and the usability can be increased.

[Brief description of the drawings]

FIG. 1 is a front view of a waterway installation type crushing apparatus provided with a waterway installation type screen of the present application.

FIG. 2 is a perspective view when installed in a channel such as a lower channel of a channel-installed crusher provided with the channel-installed screen of the present application.

FIG. 3 is a horizontal sectional view of the same.

FIGS. 4A and 4B are enlarged views of the arrangement of the elliptical scraper, wherein FIG. 4A is a plan view and FIG. 4B is a front view.

5A and 5B are enlarged views of the arrangement of the disk-shaped scraper, wherein FIG. 5A is a plan view and FIG. 5B is a front view.

FIG. 6 is an enlarged view of the arrangement of a boomerang-like scraper, and FIG.
Is a plan view, and (b) is a front view.

FIG. 7A is a plan view showing an example of a scraper driving mechanism, and FIG. 7B is a front view of the same.

FIG. 8 is a plan view showing an example in which the waterway installation type screen is used alone and the waterway installation type screen is installed in a rapidly narrowing waterway.

FIG. 9 is a perspective view when a conventional water channel installation type crusher is installed in a narrow water channel.

FIG. 10 is a perspective view when a plurality of conventional water channel-installed crushers are juxtaposed in a wide water channel.

[Explanation of symbols]

 W: water channel installation type crusher 1 ... casing 2 ... biaxial shear crusher 5 ... crushing blade 6 ... drive motor S ... screen 8 ... screen frame 10 ... wire (piano wire) 10s ... linear screen 11, 11A, 11B ... Scraper 12 ... Rotating shaft 13 ... Rotating motor 14 (14a-14c) ... Sprocket 15 ... Chain 16 ... Collar 17 ... Exciter 18 ... Stagnation part

Claims (8)

(57) [Claims] 1. A linear screen is formed by forming a screen frame and stretching a number of wires such as piano wires in a horizontal direction at regular intervals in the vertical direction of the screen frame.
In addition, a screen that is rotatable in a substantially horizontal plane between the wires
Provide a rapper, and when the scraper rotates,
So that the tip of the protrudes forward from the linear screen
A waterway-installed screen. 2. A comprising a plurality juxtaposed scrapers laterally of the screen frame according to claim 1 Symbol placement waterways stationary screen. 3. A scraper, eccentric oval or disc-shaped or formed by forming a boomerang shape claim 1 or 2 waterway installation screen according with the rotational center position. 4. A water passage installed screen according to claim 1 any one of a plurality of scrapers and to rotate in unison with the same phase. 5. The water passage installed screen according to claim 1 any one in which the plurality of scrapers so as to rotate to have a phase difference. 6. The method of claim 1, the vibrator is provided on the screen frame
A waterway installation type screen according to any one of claims 1 to 5 . 7. An apparatus installed in a waterway for crushing impurities in a water stream, wherein the apparatus is installed at a predetermined angle so as to close the width of the waterway in combination with the waterway in which the apparatus is installed . A waterway installation type crushing device, wherein the waterway installation type screen according to any one of 6 is connected to the crushing device. 8. The crushing apparatus according to claim 7, wherein one end of the screen is connected to the crushing apparatus by a hinge.