KR101620277B1

KR101620277B1 - crushing apparatus

Info

Publication number: KR101620277B1
Application number: KR1020150126383A
Authority: KR
Inventors: 가즈히사 마키
Original assignee: 스미도모쥬기가이엔바이로멘트 가부시키가이샤
Priority date: 2015-07-22
Filing date: 2015-09-07
Publication date: 2016-05-11
Also published as: JP2017023937A; CN106365214B; JP6462516B2; CN106365214A

Abstract

In a crushing apparatus installed in a waterway, a conventional crushing apparatus has a screen stacked with screen bars having a horizontal shape, so that a problem that the screen is deformed by bending gradually generated by a self-weight of the screen bar exists. Therefore, the present invention has a purpose to suppress screen deformation due to the bending of the screen bar in the crushing apparatus installed in the waterway. To solve the problem, the crushing apparatus provided includes: a screen for collecting an impurity in water to be treated; a crushing unit for crushing the impurity; and a scraping unit for scraping the impurity collected by the screen to the crushing unit, wherein the screen has a panel member having a slit formed in the approximately horizontal direction and a collecting portion formed at upper and lower parts of the slit to collect the impurity. Therefore, the bending due to the screen bar is able to be suppressed.

Description

[0001] Crushing Apparatus [

The present application claims priority based on Japanese Patent Application No. 2015-144826, filed on July 22, 2015. The entire contents of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a crushing device installed in a water channel of a sewage treatment plant or the like for crushing impurities such as foreign matter suspended in water.

In a water channel such as a sewage treatment plant, a crushing device for crushing impurities such as foreign matter suspended in water is provided. Since the crushing device installed in the water channel is provided with a screen for capturing the contaminants and a scraping section for scraping the contaminants captured on the screen by the crushing section in addition to the crushing section for crushing the contaminants, Clogging can be captured and shred across the width.

For example, Patent Document 1 discloses a horizontal scraping type dust removing machine installed in a sewage treatment plant, in which a horizontally shaped screen bar extending obliquely with respect to the direction of water flow is disposed horizontally in a vertical direction And a foreign matter crusher is provided downstream of the air gap portion formed between the end portion near the downstream side of the screen and the side wall of the water passage.

Japanese Patent Application Laid-Open No. 2011-52451

In the crushing apparatus installed in the conventional water channel, as shown in Patent Document 1, a screen portion is formed by horizontally arranging a horizontal screen bar in the vertical direction.

However, such a horizontally shaped screen bar has a problem that the screen is deformed due to the gradual deflection caused by its own weight.

Therefore, the present invention aims at suppressing deformation of the screen due to bending of the screen bar in the crushing apparatus provided in the water channel.

As a result of intensive studies on these problems, the present inventors have found that deformation of the screen is suppressed by constituting a screen for capturing the contaminants in the water to be treated with a plate member having a slit in a substantially horizontal direction Thereby completing the present invention.

Specifically, the present invention provides the following crushing apparatus.

According to an aspect of the present invention, there is provided a water purifier comprising: a screen for collecting impurities in water to be treated; a crushing unit for crushing the impurities; and a scraping unit for scraping the impurities collected by the screen with the crushing unit Wherein the screen comprises a slit formed in a substantially horizontal direction and a plate member formed on an upper portion and a lower portion of the slit and having a collecting portion for collecting the contaminant.

According to the present invention, since the screen is made of the plate member, the thickness of the screen is reduced, so that the weight is reduced, and warping due to its own weight can be prevented.

Further, in the conventional screen bar screen, since a plurality of screen bars are stacked, the assembling work is complicated. However, in the crusher of the present invention, there is also an effect that the screen portion can be easily installed by mounting one plate member.

Further, in the present invention, the plate member is made of a steel material having a thickness of 10 to 20 mm, and the length of the collecting portion in the height direction is 10 to 20 mm.

Since the screen is installed so as to oppose the flow of the water to be treated, it is required that the screen is resistant to the water pressure of the water to be treated. In addition, since impurities such as foreign matter contain high hardness such as wood chips and stones, when these impurities collide, there is a fear that deformation may occur in the trapping part.

By using a steel material having a thickness of 10 to 20 mm as the plate member and setting the length of the collecting part in the height direction to 10 to 20 mm, a screen capable of withstanding the water flow pressure of the water to be treated, .

Further, the present invention is characterized in that the screen has a circular arc portion extending (stretched) to the downstream side of the center of the scraping portion.

Since the contaminants collected on the screen move along the outer peripheral surface of the screen by the scraping portion, water flows along the shape of the screen on the outer peripheral side of the screen. Therefore, if the screen has an arc portion, a swirling flow is formed along the arc portion.

Further, in the above aspect, the arc portion of the screen is extended to the downstream side of the center of the scraping portion. As a result, an arc portion is formed on the downstream side of the center of the scraping portion so as to extend toward the center side of the water to be treated. As a result, a swirling flow directed from the side wall of the water channel to the center of the water channel is formed on the downstream side of the center of the scraping portion, and the impurities staying near the side wall of the water channel are guided toward the crushing portion provided on the center side of the water channel .

According to the crushing apparatus of the present invention, deformation of the screen due to bending of the screen bar can be suppressed in the crushing apparatus provided in the channel.

1 is a schematic explanatory view showing a structure of a crushing apparatus according to a first embodiment of the present invention.
2 is a schematic explanatory view showing the structure of a screen used in the crushing apparatus according to the first embodiment of the present invention. Fig. 2 (A) is a perspective view of the screen of the first embodiment of the present invention as viewed in the X direction in Fig. 1. Fig. 2 (B) is an enlarged view of a portion indicated by a circle in Fig. 2 (A).
3 is a schematic explanatory view for explaining the shape of the screen of the first embodiment of the present invention.
4 is a schematic explanatory view showing a structure of a screen used in the crushing apparatus according to the second embodiment of the present invention.
5 is a schematic explanatory view showing a structure of a crushing apparatus according to a third embodiment of the present invention.
6 is a schematic explanatory view showing a structure of a crushing apparatus according to a fourth embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a crushing apparatus according to the present invention will be described in detail with reference to the drawings.

The crushing apparatus of the present invention is installed in a water channel and is used for crushing the contaminants in the for-treatment water flowing in the water channel. For example, the water channel may be a sedimentation pond such as a sewage treatment plant, and the impurity may include foreign matter contained in sewage such as sewage.

(Embodiment 1)

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory view showing a configuration of a crushing apparatus according to a first embodiment of the present invention. FIG. The crushing apparatus according to the first embodiment of the present invention includes a screen 1 for capturing the contaminants G contained in the water to be treated flowing in the water channel R and a screen 1 for holding the contaminants G captured on the screen 1, A scraping section 2 for scraping off the contaminants G and a crushing section 3 for crushing the contaminants G. [

1, the screen 1 is provided transversely from the side wall R1 of the water channel R to the vicinity of the side wall R2, and is provided downstream of the gap between the screen 1 and the side wall R2 And a crushing section 3 is provided on the side of the crushing section. The scraping portion 2 is provided on the downstream side of the screen 1 and has a rake 21 which revolves around the rotating shaft 22. The rake 21 has an action of passing the slurry 12 formed on the screen 1 and scraping the contaminant G captured on the screen 1 and transferring it to the crusher 3.

[screen]

The screen 1 according to the first embodiment of the present invention is constituted by a plate member having a circular arc portion formed at a substantially central portion thereof and the one end side of the plate member is fixed to the side wall R1 of the water channel R, As shown in FIG. The other end side of the plate member is fixed to the side surface of the casing on the center side of the water passage of the crushing section (3). The means for fixing the screen 1 to the water channel R is not particularly limited and may be fixed to, for example, a housing surrounding the scraping portion 2 and the crushing portion 3 .

Fig. 2 (A) is a perspective view of the screen 1 of the first embodiment of the present invention, viewed from the direction X in Fig. 1. As shown in Fig. 2, the screen 1 is provided with a slit 12 in a substantially horizontal direction on a plate member 11. As shown in Fig. A plurality of slits 12 are provided in the height direction, and a plurality of slits 12 are juxtaposed at regular intervals. The upper and lower portions of the slit 12 are provided with a collecting portion 13 for collecting the contaminants G. [

As described above, in the crushing apparatus of the present invention, since the thickness of the screen 1 can be reduced by using the plate member 11, the weight can be reduced, and warping due to its own weight can be prevented.

In the screen 1 of the first embodiment, a plurality of slits 12 are formed with respect to one plate member 11, but the number of slits is not limited. For example, only one slit may be formed for one plate member. Further, a plurality of slits may be provided by arranging a plurality of plate members having only one slit arranged thereon, but it is preferable to form a plurality of slits on one plate member from the viewpoint of the mounting operation.

The slit 12 is configured to transmit the for-treatment water without passing the trapping grit G. For this, the width of the slit 12 (see (c) in FIG. 2 (B)) is suitably designed according to the size of the obstacle G to be captured, preferably 10 mm or more. If it is less than 10 mm, the resistance against permeation of the water to be treated becomes large, so that a load due to the flow of the water to be treated is applied to the plate member 11, and there is a possibility that the plate member is deformed.

The length of the collecting portion 13 in the height direction (see FIG. 2B (b)) is not particularly limited, but is preferably 10 to 20 mm. When the diameter is less than 10 mm, the strength of the plate member in the collecting part 13 is weakened, so that there is a possibility that the water pressure of the for-treatment water is deformed by collision of contaminants such as foreign matters or foreign matter. On the other hand, if it exceeds 20 mm, the pressure to be received from the water flow of the for-treatment water becomes large, and the load of the water flow pressure also increases. As a result, it is necessary to increase the thickness of the plate member to increase the strength thereof, which is disadvantageous for slit forming processing.

In the first embodiment, the lengths in the height direction of the collecting part 13 between adjacent slits 12 are formed to be equal to each other. However, the present invention is not particularly limited and may be non-uniform.

As the plate member 11, any material may be used. For example, steel, aluminum, plastic, stone and the like can be mentioned. From the viewpoint of processability and strength, it is preferable to use a steel material.

Further, since the plate member 11 is used in water, it is preferable to perform anti-corrosive coating.

The thickness of the plate member 11 is suitably set as necessary, but is preferably 10 to 20 mm. If it is less than 10 mm, the strength becomes weak, and there is a possibility that the water pressure of the for-treatment water or the impurities such as foreign matter collide with each other. On the other hand, when it is more than 20 mm, it is necessary to carry out deep processing when forming the slit 12, so that the processing suitability is not excellent.

The shape of the plate member 11 may be any shape or may be a linear shape as well as a shape having an arc portion at substantially the center of the plate member 11 as in the first embodiment, .

Fig. 3 shows a schematic explanatory diagram for explaining the shape of the screen 1 of the first embodiment of the present invention. 3, the screen 1 is provided with an arcuate portion 14 at a substantial center of the plate member 11 and has linear portions 15 and 16 at both ends thereof. The screen 1 is provided so that the linear portion 15 side of the arc portion 14 extends to the downstream side of the center of the scraping portion 2. The downstream side of the center of the scraping portion 2 means the downstream side of the rotation axis 22 of the rake 21 that rotates along the arc portion 14. [

Since the circular arc portion 14 is extended to the downstream side of the center of the scraping portion 2 and the contaminant G scraped in the rake 21 moves along the outer periphery of the arc portion 14, The swirling flow is formed on the outer periphery of the rotor 1. As a result, the water flow F is generated from the side wall R2 toward the center of the water channel R, so that the contaminant G staying in the vicinity of the side R2 can be strongly guided toward the crush zone 3. [

The screen 1 of the first embodiment is provided with the arcuate portion 14 formed along the garden shape (broken line). However, in the downstream side of the center of the scraping portion 2, It may be a curved portion drawn toward the center side.

The circular arc portion 14 is preferably stretched to a position passing through the rotating shaft 22 of the scraping portion 2 and 20 degrees or more from the plane perpendicular to the flow of the water to be treated, (See &thetas; of the drawing for the angle). 20 DEG or more, it is possible to reliably form the water flow F from the side wall R2 toward the center side of the water channel R. [

The intersection Q of the outer circumferential surface of the screen 1 and the rake orbit P drawn by rotating the rak 21 of the scraping portion 2 (dashed-dotted line) It is preferable to configure the position to be 20 to 70 degrees from the vertical plane, more preferably 30 to 60 degrees.

The contaminant G scraped in the rake 21 falls at the intersection Q of the outer circumferential surface of the screen 1 and the rake orbit P and flows into the crushing section 3 to be crushed. When the position of the intersection Q is less than 20 degrees, the impurity G away from the rake 21 is moved by the centrifugal force of the rake 21 toward the side wall R2 Therefore, there is a fear that it may not flow smoothly into the crushing section 3. On the other hand, if it exceeds 70, there is a fear that the peeled contaminant G moves in the sidewall R1 direction (left side in the front view), and the inflow into the crushing portion 3 may be hindered.

[Scraping Unit]

The scraping portion 2 of the first embodiment of the present invention includes a rotating shaft 22 and a rake 21 mounted radially from the rotating shaft 22. The rake 21 is a plate blade having a thickness capable of passing through the slit 12 of the screen 1. The raking portion 2 is provided with the same number of rakes 21 as the slit 12 of the screen 1, In the height direction.

The rake 21 conveys the contaminant G projected from the slit 12 of the screen 1 and captured on the screen 1 while the rake 21 is rotating around the rotation axis, The operation of dropping the conveyed contaminants G is repeatedly performed. The separated contaminants G flow into the crushing section 3 together with the flow of the water to be treated and are crushed.

The scraping portion of the present invention may be of any structure as long as it can transfer the contaminants G captured on the screen 1 to the crushing portion and can be designed appropriately according to the shape of the screen 1. [ For example, in addition to the configuration of the scraping section 2 of the first embodiment, there is a configuration in which a chain equipped with a rake and a plurality of sprockets for circling the chain.

As in the scraping portion 2 of the first embodiment, the scraping portion constituted by the rotating shaft 22 and the rake 21 radially mounted from the rotating shaft 22 is engaged with a chain Since there is no structure and a simple structure, there is an advantage that troubles such as the waving of the scum by the scraping portion 2 do not easily occur.

[Crushing part]

The crushing section 3 of the first embodiment of the present invention is a vertical two-axis crusher. As the crushing part of the present invention, any crushing factor may be used, for example, a horizontal crushing factor may be used. It is preferable that the crusher is a vertical crusher because the crusher can be uniformly provided in the height direction of the screen 1. [

It is preferable to dispose the crushing section 3 in the vicinity of the position of the intersection Q of the outer circumferential surface of the screen 1 with the rake orbit P in the present invention. Thereby, the contaminant G separated from the rake 21 can flow smoothly into the crushing section 3.

(Second Embodiment)

4 is a schematic explanatory diagram showing the structure of the screen 1 used in the crushing apparatus according to the second embodiment of the present invention.

In the crushing apparatus of the second embodiment, two screens 1 are vertically mounted. Other configurations are the same as those of the first embodiment.

As in the second embodiment, the screen 1 can be constituted by a plurality of plate members 11. In the case of constituting by a plurality of plate members 11, since the screen parts can be made lighter, the mounting work is facilitated. However, when a plurality of screens 1 are provided, a gap may be provided between the screens 1, and the gap may act like the slit 12.

(Third Embodiment)

5 is a schematic explanatory view showing a structure of a crushing apparatus according to a third embodiment of the present invention.

In the crushing apparatus according to the third embodiment, there is provided a linear screen 4 which is inclined in the downstream direction.

As in the first embodiment, the screen 4 is constituted by a plate member having a plurality of substantially horizontal slits arranged in the height direction.

A chain 52 on which the rake 53 is mounted and a scraping portion 5 having two sprockets 51a and 51b for driving the chain 52 are provided.

As in the third embodiment, the crushing apparatus having the scraping unit 5 using a chain and a plurality of sprackets can be installed irrespective of the width of the water channel R. [ Therefore, it is a crushing apparatus suitable for installation in a water passage R having a large width.

(Fourth Embodiment)

6 is a schematic explanatory view showing a structure of a crushing apparatus according to a fourth embodiment of the present invention.

In the crushing apparatus of the fourth embodiment, in the crushing apparatus of the third embodiment, a screen 6 having a straight line portion and a curved line portion is provided in place of the linear screen 4.

As in the first embodiment, the screen 6 is constituted by a plate member having a plurality of slits arranged substantially horizontally in the height direction.

The curved portion is extended to the downstream side of the center of the sprocket 51b so that a water flow F is generated in the direction of the center of the water channel R from the side wall R2 similarly to the first embodiment , It is possible to strongly induce the contaminant G staying in the vicinity of the R2 side toward the crushing section 3.

The crushing apparatus of the present invention can be used as a crushing apparatus for crushing contaminants in the for-treatment water flowing in a water channel. Specifically, it can be used, for example, as a crushing device for capturing and crushing foreign matter as a clog in a climatic zone of a sewage treatment plant.

It is also possible to distribute the screen mounted on the crushing apparatus of the present invention as a screen component. Thus, the crushing apparatus of the present invention can be constructed by using the crushing apparatus that has been installed in the past.

1 screen
11 plate member
12 slits
13 collection part
14 arc part
15,
2 scraping portion
21 Lake
22 rotary shaft
3 crushing part
4 screens
5 scraping unit
51a spracket
51b Spracket
52 Chains
53 Lake
R channel
R1 side wall
R2 side wall
G Contaminant
F water
P-rake orbit
Q intersection

Claims

A screen for collecting contaminants in the water to be treated,
A crushing unit for crushing the impurities;
A scraping part for scraping the impurities collected by the screen with the crushing part;
Wherein the crushing device comprises:
The screen,
A slit formed in a horizontal direction, and
And a collecting part formed at the upper and lower sides of the slit,
And a plate member,
In the screen, the screen has a linear portion and an arc portion,
Wherein the linear portion is provided at an upstream end portion in the number of the screens,
The arc portion is extended to the downstream side of the center of the scraping portion
. &Lt; / RTI >

The method according to claim 1,
Wherein the plate member is made of a steel material having a thickness of 10 to 20 mm,
The length of the collecting part in the height direction is 10 to 20 mm
. &Lt; / RTI >

The method according to claim 1 or 2,
The circular arc portion extends from a surface perpendicular to the flow of the water to be treated through a rotating shaft of the scraping portion to a position of 20 degrees or more
. &Lt; / RTI >