JP3581017B2 - Equipment to collect underwater contaminants into the crusher - Google Patents

Description

[0001]
[Industrial applications]
The present invention guides foreign substances such as empty cans, plastic containers, and wood chips flowing down into sewage or tap water to a crusher installed in the waterway, and crushes finely in water by the crusher, and a pump. More particularly, the present invention relates to a screen device for guiding foreign matter to a crushing machine, which prevents an accident such as breakage or clogging.
[0002]
[Prior art]
If contaminants such as empty cans, plastic containers, and wood chips flow into the sewage treatment facility together with the sewage, it can cause accidents such as clogging and breakage in the facility piping and pumps. As a device, a device disclosed in Japanese Patent Publication No. 7-85781 has been developed. As shown in FIG. 9, the apparatus is a combination of an endless loop-shaped open mesh screen and a crusher 1 in a sewer, and traps impurities in the sewage with the endless loop-shaped open mesh screen. Then, this is carried into the crusher 1, where it is finely crushed and dispersed in the sewage.
[0003]
The above conventional apparatus has the following problems.
(1) Since the screen portion is made of a flexible material such as polyethylene and nylon due to the rotational movement of the mesh screen, the screen portion cannot be made strong and is easily damaged, resulting in poor durability.
(2) Since the screen is a rotating belt type, the screen is doubled to increase the water flow resistance and hinder the passage of sewage.
(3) Since the screen has a net-like belt surface, foreign substances are easily entangled by the unevenness, and once entangled, it is difficult to loosen.
[0004]
In order to solve the above problems, the applicant has devised an apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 8-226165. In this apparatus, as shown in FIG. 10, a fixed bar screen is installed obliquely in a water channel, a crusher is installed at a downstream end of the screen, and a rear surface of the screen is located near the crusher at a rear side position of the screen. A scraper is installed, and contaminants flowing down to the crusher along the bar screen are sent to the crusher by the scraper at the end of the screen. However, in this device, when the water flow is fast, the component force in the water flow direction is excessively large than the component force for moving the contaminants along the bar screen, and the contaminants are pressed against the bar screen and can move along the bar screen. There was a problem of staying without being.
[0005]
[Problems to be solved by the invention]
Therefore, the present invention solves the above-mentioned problems of the prior art, strengthens the screen, improves durability, reduces water flow resistance and improves water flow, and foreign substances are entangled with the screen or the front of the screen. It is an object of the present invention to provide a waterway-installed type contaminant collection device that can reliably collect in a crusher without staying in a crusher.
[0006]
[Means for Solving the Problems]
A screen device and a crusher installed on one side of the screen device are installed across the water channel to collect underwater contaminants into the crusher, wherein the screen device is a vertically stacked circle. and arcuate screen member consists rake axis in the vertical direction are fixed rake group that rotates between the arcuate screen member, the rake shaft is disposed eccentrically with the center of the outer peripheral edge of the screen, the rake It is characterized in that the front end portion protrudes and disappears from the outer peripheral edge of the screen to scrape impurities and collect them in the crusher.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIGS.
In FIG. 1, reference numeral 1 denotes a well-known, for example, a two-shaft rotor crusher, which is juxtaposed in a water channel W near an obliquely rearward position of the screen device 2.
The screen device 2 is provided on a screen frame F having a structure in which three channel-shaped columns 4, 4, 4 are erected on the upper surface of a short cylindrical base 3 at circumferential intervals (see FIGS. 4 and 5). ), An arc-shaped screen member 6 (FIG. 6 (a)) formed by protruding engagement pieces 5, 5, 5 for engaging with the channel portions of the channel-shaped columns 4, 4, 4. ) Are sequentially laminated with the collar 7 interposed therebetween, and these are integrally fastened with tie rods 8, 8, 8 (see FIG. 2), and the screen laminate is fixed to the columns 4, 4 with lock bolts 9, 9. It is a structure (see FIG. 1, FIG. 2).
In order to impart rigidity to the screen laminate , an annular screen member 6 '(see FIG. 6 (b)) having no notch is provided instead of the arc screen member every few sheets.
[0008]
10 is a rake shaft, the lower end portion is supported by the lower bearing housing 12 which is installed in the machine frame 11 _1, 11 ₂ of the gantry 3. The upper end is connected to a drive shaft 14 via a flange coupling 13. The drive shaft 14 is supported by an upper bearing box 16 installed on an upper lid 15 installed on the upper surface of the screen frame F. I have. The upper end of the drive shaft 14 is connected via a coupling 17 to an output shaft of a motored reduction gear 19 installed on a reduction gear installation table 18. 20 is a mechanical seal, 21 is a ball bearing, 22 is an oil seal, 23 is an angular ball bearing, and 24 is a bearing retainer.
[0009]
The rake shaft 10 is installed in the screen members 6 and 6 'so as to be eccentric with respect to the center of the screen member, and the rake shaft 10 is provided with a rake R.
The rake R is composed of an upper rake group R ₁ , a middle rake group R ₂ , and a lower rake group R ₃ as shown in FIG. 7, and each rake group includes a rake single piece 25 with a boss (shown in FIG. The rake shaft 10 is tied with set screws 27, 27 to shift the mounting angle of each rake group (in the example shown, R ₁ , R ₂ , R ₃ are each 120 degrees). It is fixed so that the arc-shaped screen member 6 and the annular screen member 6 'are located between the rake single pieces 25. 28, 28 are spacers inserted between each rake group.
[0010]
The rake shaft 10 is installed eccentrically with the center of the screen members 6 and 6 '. When the tip of the rake is located near the crusher 1, the rake shaft 10 is drawn inward from the outer peripheral edges of the screen members 6 and 6' and rotated by 180 degrees The screen members 6, 6 'are projected outward from the outer peripheral edges and rotated.
[0011]
Reference numerals 29, 29 denote stationary guides of the cylindrical bar-shaped screen installed at predetermined locations in the water channel. The upper end of the guide is connected to the upper portion of the screen frame F with mounting bolts 30 to form the screen F. The lower part is in contact with the lower part of the guide. 31 and 31 are locking plates of the screen frame F mounted on the outer wall side of the guides 29 and 29. When the cylindrical screen is installed, the cutout (the hatched portion in FIG. 1) of the arc-shaped screen member is installed so as to be located on the downstream side. 32 is a water flow guide installed on the upstream side of the screen device, 33 is a water flow guide provided at the entrance of the crusher, and 34 is a scraper.
[0012]
The present invention has the above-mentioned structure, and the tap water or sewage flowing down the water channel W passes through the screen members 6 and 6 ′, and impurities in the water are captured by the screen members 6 and 6 ′. Since the rake R rotates eccentrically with the screen member inside the screen members 6 and 6 ', the foreign substances are scraped toward the entrance of the crusher 1 while sliding on the outer peripheral surface of the screen member at the leading end of the rake R. In the vicinity of the entrance of the crusher, the leading end of the rake is retracted into the screen member 6 and separated from impurities. Then, the contaminants are introduced into the crusher 1 by flowing water along the scraper 34. The foreign matter that has entered the inside of the screen member 6 flows out of the screen from the cutout portion without staying inside the screen.
[0013]
【The invention's effect】
According to the present invention, since the screen members are stacked on the crosspiece, it is possible to maintain strength, and each rake single piece 25 rotates between the eyes of each screen member 6 and 6 and is captured by the screen. The contaminants are surely scraped toward the crusher 1 while sliding on the outer peripheral surface of the screen member at the tip of the rake. Further, by providing the cutout portion on the downstream side of the screen, it is possible to prevent foreign substances from staying inside the screen and to reduce the inflow resistance of the screen. Further, by mounting the respective rake groups at an angle shifted from each other with respect to the rake shaft 10, there is an effect that the power for scraping contaminants can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional plan view showing a use state of the device of the present invention.
FIG. 2 is a longitudinal sectional view of the device of the present invention.
FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 1;
FIG. 4 is a vertical sectional view taken along the line BB of FIG. 5 showing the screen frame.
FIG. 5 is a cross-sectional plan view taken along the line CC of FIG. 4;
FIG. 6 is a plan view of a screen.
FIG. 7 is a rake assembly diagram.
FIG. 8 is an explanatory view of a rake, and (a) is a plan view of a single rake. (B) is an explanatory view of a rake group.
FIG. 9 is an explanatory diagram of a conventional device.
FIG. 10 is an explanatory diagram of another conventional device.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 crusher 2 screen device 3 gantry 4 4 support 5 engaging piece 6 arc-shaped screen member 6 ′ annular screen member 7 collar 8 tie rod 9 lock bolt 10 rake shaft 11 ₁ , 11 ₂ machine frame 12 lower bearing box 13 flange cup Ring 14 Drive shaft 15 Upper lid 16 Upper bearing box 17 Coupling 18 Reduction gear installation stand 19 Reduction gear with motor 20 Mechanical seal 21 Ball bearing 23 Angular ball bearing 24 Bearing retainer 25 Rake single piece 26 Through bolt 27 Set screw 28 Spacer 29 Stationary guide 30 Mounting bolt 31 Lock plate 32 Water flow guide 33 Water flow guide 34 Scraper F Screen frame R Rake R ₁ Upper rake group R ₂ Middle rake group R ₃ Lower rake group W Waterway

Claims (4)

A screen device and a crusher installed on one side of the screen device are installed across the water channel to collect underwater contaminants into the crusher, wherein the screen device is a vertically stacked circle. and arcuate screen member consists rake axis in the vertical direction are fixed rake group that rotates between the arcuate screen member, the rake shaft is disposed eccentrically with the center of the outer peripheral edge of the screen, the rake device for collecting the crusher contaminants in water, wherein the tip is collected by retractable from the screen peripheral edge to contaminants the raking crusher. Device for collecting the arcuate screen cutout portion contaminants in water according to claim 1, characterized in that disposed toward a downstream side of the waterway of the member to the crusher. Device for collecting contaminants in water according to claim 2, wherein the screen device is characterized by having an arc-shaped screen member and an annular screen member to the crusher. Has the rake shaft a plurality of rake groups, devices for collecting contaminants in water according to claim 1 or claim 2, wherein each rake group is characterized in that attached by shifting the angles to the crusher .

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