JPH0444660Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is installed in water intake channels for power generation equipment, liquefied natural gas vaporization equipment, etc. This invention relates to a rotary bar screen for removing jellyfish and the like and taking them out of waterways.

[Conventional technology]

In a bar rotary screen, a bar rack is formed on a carrier chain stretched between a foot sprocket that is rotatably installed in the intake channel and a rotatable head sprocket that is located above the foot sprocket. A basket having a vertically elongated slit-like filter body is attached.

The basket filters the liquid in the intake channel, captures dirt, carries it upwards, and is turned over by the head sprocket. At this time, the dust captured on the basket is allowed to naturally fall under its own weight into a waste tray provided on the downstream side, and is discharged out of the system. Most of the dust is thus discharged out of the system.

However, if the debris wedges into the opening of the bar rack under water due to water pressure, it will not fall naturally into the trough due to its own weight, but will return to the waterway as the carrier chain moves, and will rise as the basket descends. Water pressure acting in the opposite direction may cause the dust to flow out to the secondary side of the dust remover.
Further, if the dust remover is operated with the dust stuck in the opening of the bar rack, the dust removal function may deteriorate.

Furthermore, if the bar rack is operated for a long period of time, shellfish may adhere to the sides of the bar rack and grow, blocking the opening of the bar rack and causing water flow problems.

In order to solve this problem, a large number of bar plates are attached to the surface of the torque tube that is integrally fixed to the left and right upper sprocket foils, and the bar plates are staggered with the rows of bars at the same intervals as the bars of the bar rack. A rotary bar screen and the like have been proposed in which bar plates are placed in parallel and inserted between the bars when the bar racks rotate on the circumference of the torque tube.

Further, Japanese Utility Model Publication No. 52-83325 discloses that a straight rod-shaped removal roll is provided in each slit portion so as to be rotatable around a substantially vertical axis of rotation.

[Problem that the invention aims to solve]

In the above-mentioned known example, if the dust is firmly attached to the bar or tightly caught between the bars, the bar plate or removal roll cannot escape and the dust cannot pass through, and the dust is stuck to the bar rack. There are problems in that an excessive force acts on the bar plate or the removing roll, causing deformation, or as a reaction, an unreasonable force acts on the bar plate or the removal roll, causing damage to the bar plate or the removing roll.

[Means for solving problems]

In the present invention, a vertically long slit formed by a barrack is installed in a carrier chain stretched between a foot sprocket rotatably installed in the intake channel and a rotatable head sprocket located above the foot sprocket. A basket having a shaped filter is attached, and the basket filters liquid in the intake channel while trapping dirt, carrying it upward, and removing it to a dirt trough located on the advance side of the head sprocket. In the bar rotary screen, a comb-like body capable of engaging with a slit portion of a bar rack forming the slit-like filter body of the basket is provided near the head sprocket, and the comb-like body has one It consists of a plurality of large disks and small disks that are rotatably attached around the almost horizontal axis of the book, and the large disks and small disks are arranged alternately so that the large disk fits into the slit of the bar rack. The bar rack cleaning mechanism in the bar rotating screen arranged in the bar eliminates the above-mentioned problem.

[Effect]

In the present invention, a comb-shaped body that can be engaged with the slit portion of the bar rack is rotatably provided separately from the head sprocket at a position between the head sprocket and the garbage trough. Dust that is caught between the bars of the bar rack or attached to the sides of the bars by the body is removed as the carrier chain moves. Therefore, it is possible to remove dust from almost the entire area of the barracks. Furthermore, if the dust is firmly attached to the bar, the bar rack and the comb-like body will not be deformed or damaged by excessive force since the comb-like body rotates to allow the dust to pass through.

〔Example〕

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

In FIG. 3, a foot sprocket 15 is attached to a foot shaft 16 and is rotatably provided within the intake channel.

A head sprocket 5 is attached to the head shaft 4 located above the foot sprocket 15, and the head sprocket 5 is connected to a drive motor 18 via a transmission chain 17.

A carrier chain 19 is stretched between the foot sprocket 15 and the head sprocket 5.

Attached to the carrier chain 19 is a basket 3 having a vertically elongated slit-like filter formed by a barrack 1 and a saucer 2 (FIG. 1).

Moving the carrier chain 19 in the direction of arrow A from the drive motor 18 via the transmission chain 17,
The basket 3 attached to the carrier chain 19 filters the fluid flowing in the intake channel in the direction of arrow B, captures garbage, carries it upwards (in the direction of arrow A), and is reversed by the head sprocket 5 to absorb the garbage's own weight. The waste is removed via the chute 11 to the waste trough 12 located on the advance side (below) of the head sprocket 5.

In addition, a polygonal drop prevention plate whose surface is covered with an elastic body and whose apex is the tooth (chain engagement part) of the head sprocket 5 is provided between the left and right head sprockets, and It may also be possible to prevent garbage and the like that have fallen from the inverted basket from falling into the waterway.

A comb-shaped body 14 is rotatably provided between the head sprocket 5 and the garbage trough 12. The comb-like body 14 can engage with the slit portion between the bar racks 1 forming the slit-like filter body of the basket 3.

Hereinafter, with reference to FIGS. 1 and 2, the comb-like body 1
The configuration of No. 4 will be explained.

A large disk 6 with a large diameter and a small disk 7 with a small diameter are rotatably attached to a shaft 8 alternately. The thickness of the large circular plate 6 and the small circular plate 7 are made to match the pitch of the bar 1 of the bar rack. The thickness of the large disk 6 is made smaller than the spacing between the bars 1 so that the large disk 6 can fit between the bars 1 of the bar rack.

As shown in the figure, the shaft 8 to which the large and small discs 6, 7 are attached is substantially parallel to the shafts 4, 16 and is substantially horizontal, and is attached to an arm 9, which is attached to the casing 13 by a fixing member 10. Fixed.

In addition, as appropriate, a piston rod (not shown) of a pneumatic cylinder is connected to the arm 9, or a tension spring (not shown) is stretched between the arm 9 and the casing 13, so that the large and small discs 6 and 7 can be connected to each other. A cleaning mechanism such as the one described above may be pressed against the bar rack 3.

During operation of the bar rotary screen, the large disk 6 enters the slit between the bars 1 of the bar rack 3 and rotates while pushing out the dust and attached shellfish caught between the bar racks 3 from the inside to the outside. The small disc 7 is pressed against the bar rack 3 by the weight of the cleaning mechanism, and rotates together with the large disc 6 as the bar rack 3 descends.

If you try to forcefully push out the dirt that is stuck tightly between the bars 1 of the bar rack 3, an excessive force will be applied to the bar rack 3, which may lead to its damage.However, in the present invention, the cleaning mechanism is rotatable. It allows the garbage to pass through without being forced out.

In addition, by making the comb-like body rotatable in the present invention, friction between the comb-like body and the bar rack is reduced, and the part of the comb-like body that engages with the bar rack changes from time to time, which greatly reduces the amount of wear. can be reduced to

Furthermore, when the cleaning mechanism of the present invention is applied with its own weight, a pneumatic cylinder, or a tension spring force as a pushing force, the cleaning mechanism retreats and pushes out the bar rack 3, especially when it comes to strongly stuck debris. This is preferable because no excessive force is applied to the surface.

Further, the comb-like body may be attached to the upstream side of the head sprocket 5.

[Effect of idea]

In the present invention, dirt caught between the bars of the bar rack or dirt attached to the side surfaces of the bars is removed by a comb-like body made up of a plurality of large and small discs as the carrier chain moves. Therefore, if dust is firmly attached to the bars or tightly sandwiched between the bars, the comb-like body consisting of large and small disks will rotate, which will apply excessive force to the bar racks and cause them to deform. do not have. Further, the comb-like body is not damaged due to excessive force acting on it due to reaction.

Furthermore, since the comb-like body of the present invention engages with the bar rack that moves with the carrier chain, it is possible to remove dirt from almost the entire length of the bar rack.

[Brief explanation of the drawing]

Fig. 1 is a front view of the upper part of the bar rotary screen of the present invention, Fig. 2 is a view in the direction of - arrow in Fig. 1, and Fig.
The figure is a schematic front view of the bar rotating screen. 1...Barrack, 2...Saucer, 3...Basket, 4...Headshaft, 5...Head sprocket, 6...Large disk, 7...Small disk, 8...
Axis, 9...arm, 10...fixing member, 11...
Shoot, 12... Garbage trough, 14... Comb, 15... Foot sprocket, 19... Carrier chain.

Claims (1)

[Scope of utility model registration request] A vertically elongated slit-shaped filter body made of barracks is attached to a carrier chain stretched between a foot sprocket that is rotatably installed in the intake channel and a rotatable head sprocket that is located above the foot sprocket. A basket with is attached,
In the bar rotating screen, the screen filters fluid in the intake channel while trapping dirt, carries it upward, and removes it to a dust trough located on the advance side of the head sprocket. A comb-like body capable of engaging with a slit portion of a bar rack forming a shaped filter body is provided near the head sprocket, and the comb-like body is rotatable about one substantially horizontal axis. A bar rotation comprising a plurality of attached large disks and small disks, and the large disks and small disks are arranged alternately so that the large disk fits into the slit of the bar rack. Barrack cleaning mechanism in type screen.