JP4749989B2 - Rake device - Google Patents

Description

  The present invention relates to a rake device, and in particular, in sewage treatment, river drainage treatment, and the like, is installed in a treatment plant or the like, and is configured to be adjacently arranged in combination with flat steel, so that dust contained in the wastewater can be removed. The present invention relates to a rake device suitable for a bar screen type dust remover that is used for both coarse and fine dust.

Conventionally, in sewage treatment or drainage treatment at a sewage treatment plant or a river effluent treatment plant, in order to remove waste contained in the sewage or wastewater to be treated, the flow channel in the treatment tank is disposed so as to be blocked. A bar screen type comprising a bar screen for catching debris in running water, a rake for meshing with the bar screen and moving along the bar screen to lift and discharge the debris collected by the bar screen. A dust remover is installed.
This bar screen is constructed by arranging a plurality of flat steel bars (flat bars) of the same size adjacent to each other at equal intervals and fixing the front surface of the screen to be the same surface.

By the way, in sewage treatment plants and river effluent treatment plants, the inflowing waste flows down in a state where not only fine dust but also coarse waste is mixed. Therefore, the dust remover for removing coarse dust and the dust removal for removing fine dust are usually used. However, in addition to the main body of the dust remover, two additional facilities such as a transfer device are required, which increases the cost.
Therefore, the present applicant has previously proposed a bar screen type dust remover for both coarse dust and fine dust, in which coarse dust and fine dust are simultaneously captured and removed by one bar screen type dust remover. (See Patent Document 1).
In this coarse dust / fine dust bar screen type dust remover, the rake operated along the bar screen is configured so that coarse dust and fine dust can be simultaneously swept up.

However, the rake suitable for coarse dust / fine dust combined bar screen type dust remover is composed of a coarse waste cleaning rake and a fine dust cleaning rake that are either worn or worn. When damaged, there is a problem that the entire rake needs to be replaced even if another rake can be used, resulting in a large economic loss.
Japanese Patent No. 3768518

  In view of the problems of the rake for the above conventional coarse dust / fine dust bar screen type dust remover, the present invention adopts a simple assembly type rake, so that repair in the event of wear or breakage can be performed quickly, easily and inexpensively. It is an object of the present invention to provide a rake device that can be used in a simple manner.

To achieve the above object, rake apparatus of the present invention, a rake body which is fixed to both the rake frame to be movable up and down along the bar screen, against the groove for fine dust for rake insertion formed on the rake body The fine dust rake formed with a locking piece to be inserted and locked, and the fine dust rake is sandwiched between the fine rake body and the rake body by overlapping the rake body with the fine dust rake. , so as to fix, and is constituted by a rake consisting of coarse dust coarse dust for rake bar screens to form a groove for inserting the tip of the fine dust for the rake to protrude from the tip of the coarse dust for rake characterized in that way the.

In this case, the rake press applied to the front surface of the rake body can be configured to hold the fine dust rake inserted into the rake body at regular intervals and press and fix it to the rake body.

According to the rake apparatus of the present invention, by making the rake simplified assembly type, wear, repair at failure, quick, can be carried out easily and inexpensively.

Even if a fine dust rake is more easily worn or damaged than a coarse dust rake, if a portion of the fine dust rake is worn or damaged, replace only the worn or damaged fine dust rake. Since it can be used, it is more economical than exchanging the whole, and since assembly and disassembly can be performed easily, repair and inspection can also be performed quickly.

Also , by simply inserting the fine dust rake into the insertion groove, the rake mesh width can be arranged at a predetermined interval, so that a highly accurate rake can be easily assembled, and a worn or damaged fine dust rake can be assembled. Easy assembly and disassembly when replacing.

Further , the fine dust rake can be easily engaged with the rake main body simply by inserting it into the groove on the rake main body side, and in particular, the tip surface of the fine dust rake can be aligned.

In addition , the coarse dust rake attached to the top surface of the fine dust rake inserted into the rake body can be simply pressed and fixed to be integrated by screwing.

In addition, after scraping the coarse dust with the preceding coarse waste rake, the fine dust captured by the bar screen is scraped with the fine dust rake. With this rake, coarse dust and fine dust can be scraped and removed at the same time.

  For each fine dust inserted into the rake body, the rake press applied to the front of the rake body is configured to hold the fine dust rake inserted into the rake body at regular intervals and press and fix it to the rake body. The rake can be firmly fixed by a simple method, and the accuracy between the fine dust rakes can be maintained.

  Embodiments of a rake apparatus according to the present invention will be described below with reference to the drawings.

1 to 9 show an embodiment of a rake apparatus of the present invention.
In order to remove waste contained in sewage or wastewater to be treated in sewage or wastewater treatment at a sewage treatment plant or river wastewater treatment plant, there is no particular limitation. For example, as shown in FIG. Screen type dust remover A is employed.
This bar screen type dust remover A is composed of a bar screen B and a rake device for both coarse and fine dust as a rake device, and a flow channel D in which the bar screen B is disposed in a part of the treatment tank. Coarse and fine dust rake for disposing and collecting dust in the running water by scavenging and scavenging the dust (sediment) captured by the bar screen B and discharging it C is arranged so as to mesh with the mesh width of the bar screen B and move upward.

Further, the bar screen B of the bar screen type dust remover A is not particularly limited. For example, as shown in FIG. 7, the bar screen B1 for coarse dust and the bar screen B2 for fine dust are combined. The front end face of the coarse dust bar screen B1 is configured to protrude upstream from the front end face of the fine dust bar screen B2.
Thereby, even if the waste flowing down is in a mixed state of coarse waste and fine dust, the coarse waste is first captured by the coarse waste bar screen B1 protruding upstream, and the flow resistance of the coarse waste is reduced. Is supported by the coarse dust bar screen B1, the fine dust bar screen B2 can be prevented from colliding with the coarse dust, and the thin dust screen bar can be prevented from being deformed. be able to.

The coarse waste bar screen B1 mainly captures coarse waste among the flowing down waste, and has a predetermined width, plate thickness, and length determined so as to have a strength necessary for catching the coarse waste. A plurality of thin strip-shaped flat steels (hereinafter referred to as “screen bars”) are arranged at equidistant mesh widths W1, and the mesh bars W1 of the screen bars have a predetermined size of falling waste ( Arranged at intervals that can capture (coarse dust).
The fine dust bar screen B2 is smaller than the plate thickness of the coarse dust screen bar within the mesh width W1 of the screen bar constituting the coarse dust bar screen B1, and the mesh width W2 is also small. A plurality of fine dust screen bars are arranged on the screen. In this case, the screen thickness of the fine dust screen bar is set to be as thin as possible so that the fine dust set in advance can be captured and the passage area of the screen can be made as wide as possible. As a result, the aperture ratio of the fine dust bar screen B2 can be improved.

  Also, the coarse dust / fine dust combined rake arranged so as to mesh with the mesh width of the bar screen B, that is, the mesh width W1 of the coarse dust bar screen and the mesh width W2 of the fine dust bar screen. As shown in FIGS. 1 and 8, C is a coarse dust rake 3 that meshes with a coarse dust screen bar with a large mesh width, and a fine dust rake that meshes with a fine dust screen bar with a small mesh width. And 2 are integrally combined.

  Coarse dust / fine dust rake C is a rake body 1 in which rake frames 7, 7 that can be moved up and down along a bar screen are fixed to both ends, and a fine dust rake that is inserted into the rake body 1 and assembled. 2, the coarse dust rake 3 that is superimposed on the fine dust rake 2 and engaged with the rake main body 1 and the front of the rake main body 1, and the distance between the fine dust rake 2 is kept constant. The rake presser 4 is configured to be configured as described above.

As shown in FIGS. 1 and 2, the rake body 1 is formed by bending a steel plate having a required thickness into a U-shaped cross section, the upper piece 12 is made horizontal, and the rake 3 for rough waste is attached to the screw or bolt 61. A mounting bolt hole 15 for fixing with the nut 62 is formed, the lower piece 11 is bent with respect to the vertical main body piece 10, and the rake presser 4 is also attached to the main body piece 10 with screws or bolts 51. The mounting bolt hole 14 for fixing with the nut 52 is formed, and the grooves 13 and 13 for inserting the fine dust rake are formed at predetermined intervals from the main body piece 10 to the upper piece 12. Configure.
In this case, the interval between the fine dust rake insertion grooves 13 and 13 is determined so as to be the mesh width W2 of the screen bar of the fine dust bar screen B2, and the screen bar of the coarse dust bar screen B1. The groove 13 is not provided at the position.
Therefore, the interval at which the groove 13 is not provided is set to be equal to the screen width W1 of the screen bar of the coarse dust bar screen B1.

  As shown in FIG. 4, the fine dust rake 2 is formed by cutting a steel plate having a suitable thickness as a fine dust rake into a deformed triangle, similar to the rake body 1, and is used for fine dust on the top surface of the tip. The coarse waste rake receiving surface 24 that contacts the coarse waste rake so that the insertion piece 21 is inserted into the mesh width of the bar screen B2 and has a step on the upper surface. In the lower part, an insertion groove 22 for inserting into the groove 13 on the rake body side and a locking piece 23 for locking with the groove 13 on the rake body side are integrally formed.

Further, the coarse waste rake 3 is not particularly limited. For example, the coarse rake rake 3 is formed in a flat plate shape using a steel plate having a thickness greater than that of the fine dust rake 2, as shown in FIG. 3. The mounting bolt hole 33 drilled to be attached to the rake body 1 with screws or bolts 61 and nuts 62 and the coarse dust bar screen insertion groove 32 for inserting the screen bar of the coarse dust bar screen B1. And a scraping piece 31 is formed by scraping the tip so that the tip end surface comes into contact with and slides on the fine dust bar screen. The interval between the coarse dust bar screen insertion grooves 32, 32 is set to be equal to the mesh width W1 of the screen bar of the coarse dust bar screen.
When this coarse trash rake 3 is fixed to the rake body 1, the fine dust rake 2 is pressed and fixed to the rake body 1 by the coarse trash rake 3.

As shown in FIGS. 5 and 6, the rake presser 4 is formed by cutting a steel plate in the same manner as the rake main body 1, and is formed on the front surface of the rake main body 1 into which a plurality of fine dust rakes 2 are inserted. The rake body 1 and the fine dust rake 2 are integrated with each other while maintaining the interval between the fine dust rakes when the screws are installed with screws or bolts 51 and nuts 52.
Accordingly, the rake retainer 4 forms a bolt hole 42 for fixing with a screw or a bolt nut on the rake body side and a groove 41 for inserting a fine dust rake for inserting the fine dust rake 2.
The interval between the fine dust rake insertion grooves 41 is set to be equal to the mesh width W2 of the fine dust screen bar, and a groove 41 is provided at a position corresponding to the screen bar position of the coarse dust bar screen B1. Do not.

Next, the assembling order of the coarse dust / fine dust combined rake C as the rake device will be described.
The fine dust rakes 2 are inserted into all the fine dust rake insertion grooves 13 of the rake main body 1 with the rake frames 7 and 7 fixed to both ends, and the insertion grooves 22 are formed at the bottom of the rake main body side groove 13. The plurality of fine dust rakes 2 are attached to the rake body 1 so that the locking pieces 23 are locked with the back side of the rake body.
Further, a rake retainer 4 can be applied to the front surface of the rake body 1. At this time, all the fine dust rakes 2 are inserted into the fine dust rake insertion grooves 41 formed in the rake presser 4. As a result, the interval between the fine dust rakes 2 is fixed, and then the rake presser 4 and the rake main body 1 applied to the front surface of the rake main body 1 are screwed between the bolt holes 42 and 14, as shown in the figure. Bolts 51 are inserted, and nuts 52 are screwed into the bolts 51 and fixed together.

Next, a trash rake 3 is disposed on the upper surface side of the rake body 1. This is because the coarse dirt rake 3 is placed on the coarse dirt rake receiving surface 24 on the upper surface of the fine dust rake 2 inserted into the groove 13 of the rake body 1, and a screw or bolt as shown in FIG. Then, a bolt 61 is inserted, and a nut 62 is screwed into the bolt 61 to be fixed.
As a result, the coarse waste / fine dust combined rake C is assembled integrally, but this assembling order is not particularly limited, and the rake presser 4 is attached after the coarse waste rake 3 is attached to the rake body 1. It can also be done.

  When a part of the fine dust rake 2 is worn or damaged by use, the coarse dust rake 3 and the rake presser 4 are removed by disassembling the bolts and nuts, and only the damaged fine dust rake 2 is removed. After the replacement, the coarse waste rake 3 and the rake presser 4 are fixed to the rake body 1 again with bolts and nuts. As a result, the coarse dust / fine dust combined rake can be used again.

  As mentioned above, although the rake device of the present invention has been described based on the embodiment thereof, the present invention is not limited to the configuration described in the embodiment, and for example, a single rake other than the coarse dust / fine dust combined rake can be used. The configuration can be changed as appropriate without departing from the spirit of the invention, such as being applicable to a rake of the mesh width.

  The rake apparatus of the present invention has a characteristic that the rake can be easily assembled and repaired at the time of wear or breakage quickly, simply and inexpensively. In addition, it can also be used for, for example, the use of dust removal equipment for rivers and industrial / food-related dust removal equipment.

1 shows an embodiment of a rake device of the present invention, in which (A) is a plan view, (B) is a front view, (C) is a side view, and (D) is a cross-sectional view. The rake body is shown, (A) is a plan view, (B) is a front view, and (C) is a side view. It is a top view which shows the rake for coarse garbage. It is a top view which shows the rake for fine dust. It is a top view which shows a rake presser. It is a top view which shows the rake presser which carried out a different shape. It is an external appearance perspective view which shows the whole bar screen type dust remover. It is an external appearance perspective view which shows the whole rake. It is explanatory drawing which installed the bar screen type dust remover in the water channel.

A Bar screen type dust remover B Bar screen C Rake for coarse and fine dust (rake device)
D Flow channel arranged in a part of the treatment tank B1 Bar screen for coarse dust B2 Bar screen for fine dust 1 Rake body 2 Rake for fine dust 3 Rake for coarse dust 4 Rake presser 7 Rake frame

Claims (2)

A rake body which is fixed to both the rake frame to be movable up and down along the bar screen, plug against the groove for fine dust for rake insertion formed on the rake body, and a locking piece for locking The fine dust rake formed and the fine dust rake is sandwiched and fixed between the rake body and the rake bar screen for coarse dust. through which is constituted by a rake consisting of coarse dust for rake having grooves, rake device, wherein a distal end of the fine dust for rake and so as to protrude from the tip of the coarse dirt for rake. At rake presser Ategau rake body front rake apparatus according to claim 1, characterized by being configured so plugged into rake body fine dust rake held in constant spacing presses and fixes the rake body.

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