JPH0322338Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is installed in the intake channels of pumping stations, power plants, etc., or in the settling basins of sewage treatment plants, and scoops up the dust that has flowed into the intake channels and drains it into the water. Used to remove more.

Debris that has landed on the front of the bar screen installed in the waterway is raised by a rake that moves up and down along a guide frame, and is then thrown into the trash transport equipment installed on the slab above the water and discharged.

Prior Art A rope-type automatic dust removal device in which a rake for scraping up dust that has landed on the front of a bar screen is suspended from a rope and raised and lowered so as to be guided by a guide frame is disclosed in Japanese Patent Publication No. 57-27253, for example. ,
Or, as in Japanese Patent Publication No. 48-27424, it has already been proposed by the applicant or others before this application, but in such a conventional device, the garbage raked up by a rake is transferred to a garbage discharge device on a slab. A rake opening/closing rope is used in addition to the rake raising/lowering rope to reverse the rake for the purpose of inputting the rake, or the rake is opened/closed by a link mechanism. In addition, the rake guide is bent horizontally to make it easier for debris to fall, and a portion of the rake guide frame is cut out to invert the rake.

However, such a rake requires a special structure that allows the rake itself to rotate freely, and also requires the use of two ropes and a link mechanism to avoid the complicated structure and high cost. There are disadvantages that cannot be gained. In addition, in the case of a rope-type dust remover, it is difficult to use a wiper in connection with the rake opening/closing operation.

Purpose of the invention The present invention eliminates these conventional drawbacks.The first purpose is to create a special structure that allows the rake itself to be reversed and swung by simply hanging the rake on a single rope and raising and lowering it. The purpose of the present invention is to provide a rake reversing device for an automatic dust remover that is capable of reliably reversing operation with a simple configuration that does not require the use of a rake guide frame. The purpose is to provide a device that can be easily and inexpensively installed without bending horizontally or cutting out any part of the It is an object of the present invention to provide a device of this kind that can also be equipped with a wiper device for completely scraping off remaining dust.

Means for Solving the Problems In order to achieve the above object, the rake reversing device of the automatic dust remover according to the present invention is designed so that the rake that scrapes up the dust that has landed on the front of the bar screen is guided by the guide frame. In a rope-type dust remover that is suspended from a rope and moved up and down, the guide frame is divided into upper and lower parts at a position above the slab above the water surface, and the lower part of the divided part is used as a fixed guide frame, and the upper part of the divided part is used as a fixed guide frame. A reversible reversible guide frame that operates so as to be able to be reversed from a vertical state to a backward downward tilt using a pivot part as a fulcrum while receiving a rake therein; It is set at a fixed part at the upper end of the apron at a position above the surface and protruding forward.

The reversing guide frame is preferably configured so that when the rake is pulled up by a rope, the reversing operation is performed by engaging the rake at the upper limit position and applying upward force to the reversing guide frame.

Further, in the rake reversing device, a wiper can be provided on the upper part of the reversing guide frame to scrape off the dust on the rake in accordance with the lifting operation of the rake.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the invention are illustrated in the accompanying drawings.

FIG. 1 shows an overall view of a rope-type automatic dust remover embodying the present invention. In the figure, reference numeral 1 denotes a bar screen installed in the waterway, and a rake 2 (described later) scrapes up the debris that has washed up on the front surface of the bar screen, and carries it to the upper part of the water while draining the water. The rake 2 is suspended from the end of a rope 4 fed out from a hoist 3, and is moved up and down by the drive of the hoist. A guide frame G for guiding the rake 2 is installed so that U-shaped grooves face each other on both sides of the waterway, and guide rollers 2b and 2c of the rake body 2a are fitted into the guide grooves.

This guide frame G is divided into upper and lower parts at a position above the slab at the top of the water surface, and the lower part of the division is used as a fixed guide frame 5, and the upper part of the division is vertical about the pivot 7 as a fulcrum while receiving the rake 2 therein. The guide frame 6 is reversible and can be moved backward and downward from the state.

The reversing guide frame 6 is formed to a size that can receive the rake 2, and is configured so that when the rake 2 is pulled up to a predetermined position with a rope, it is stored as is.

The pivot portion 7 of the reversing guide frame 6 is connected to a bracket 6 provided so as to protrude forward from the frame 6.
It is constructed by providing a pin at a and pivoting this pin to a fixing part 8 at the upper end of the apron 9.

The apron 9 is integrally provided above the bar screen 1 so as to be continuous therewith, and a chute 10 is provided at the upper end of the apron.

Reference numeral 11 denotes a wiper provided on the upper part of the reversing guide frame 6, and this wiper follows the lifting operation of the rake 2 to scrape off the remaining dust on the rake. The wiper 11 is mounted by using an underframe 13 installed on the slab 12 and pivoting the upper end of the wiper arm 11a with a pivot 14.

The lower end open portion 6b of the reversing guide frame 6
Usually, the upper end open part 5 of the fixed guide frame 5
b to form a vertically continuous guide groove. When connecting both guide frames 5 and 6, the axes are made to coincide with each other by pads 15 and 16 to prevent misalignment. Furthermore, an end plate 6c is provided at the upper end of the reversing guide frame 6 to close the opening, thereby preventing the rake from slipping out.
Moreover, the reversing operation of the reversing guide frame 6 is performed by engaging the end plate 6c with the rake 2 pulled up by a rope.

Operation When the rope 4 is hoisted up by the drive of the hoisting machine 3, the rake 2 moves upward as guide rollers 2b and 2c provided on the upper and lower sides of the left and right sides of the rake body 2a are guided by the fixed guide frame 5, and the bar screen 1
Rake up the debris that will be washed away. Further, when the rake 2 moves upward, it pushes the guide switching point 18 and expands it.
It is received into the upper reversing guide frame 6 from the connecting portion of both guide frames, and the upper roller 2b engages with the end plate 6c and pushes it upward. Then, the reversing guide frame 6 moves backwards and tilts forward and downward as shown by arrow A, using the pivot portion 7 as a fulcrum, and tilts while receiving the rake 2 as shown in Fig. 3, so that the rake surface is tilted forward and downward from the horizontal state. Therefore, the garbage piled on the rake surface naturally slides down and is discharged onto the chute 10, from which it is thrown into the garbage discharge device 17 installed on the slab 12.

During the reversing operation of the rake 2, the wiper 11 comes into contact with the rake surface and sweeps the rake surface from the rear to the front as the reversing operation progresses, so that the wiper removes the dust that has adhered to the rake surface without falling naturally. scraped off.

When winding up the rope is stopped and the rope is let out from the upper limit position, the inverted guide frame 6 returns to its original position as it descends, and returns to the fixed guide frame 5.
connected above. When the rake 2 descends, it is guided by the guide switching point 18 and guided by the return guide frame 5'.
is separated from the bar screen 1.

Effects of the invention As mentioned above, this invention divides the upper part of the guide frame to form an inverted guide frame, and receives the rake inside with a rake pulled up by a rope so that the rake surface slopes forward and downward. Since it is configured to be reversed, the configuration is simpler and cheaper to implement compared to conventional methods in which the rake itself is specially constructed to have a reversing swing type, or a link mechanism is used to reverse the rake. A wiper device can be installed.

[Brief explanation of the drawing]

FIG. 1 is a side view of the entire dust remover showing an embodiment of the present invention, and FIGS. 2 and 3 are enlarged longitudinal sectional side views of essential parts showing the operation of the present invention. DESCRIPTION OF SYMBOLS 1... Bar screen, 2... Rake, 3... Hoisting machine, 4... Rope, 5... Fixed guide frame, 6... Reversing guide frame, 7... Pivotal part,
11...wiper, 12...slab, 18...guide switching point.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A rake 2 for scraping up debris that has landed on the front of the bar screen 1 is suspended from a rope 4 so as to be guided by a guide frame G, and the rope is raised and lowered. In the type dust remover, the guide frame G is divided into upper and lower parts at a position above the slab above the water surface, the lower part of the division is used as a fixed guide frame 5, and the upper part of the division is pivoted with the rake 2 received therein. The reversible guide frame 6 operates to be able to be reversed from a vertical state to a backward downward tilt using a pivot point 7 as a fulcrum. A rake reversing device for an automatic dust remover, characterized in that the rake reversing device is set at a fixed portion 8 at the upper end of an apron 9 at a position projecting forward. (2) The reversing guide frame 6 allows the rake 2 to be at the upper limit position when the rake 2 is pulled up by the rope 4.
The rake reversing device for an automatic dust remover according to claim 1, wherein the rake reversing device is configured to perform the reversing operation by engaging with the reversing guide frame and applying a push-up force to the reversing guide frame. (3) The automatic dust remover according to claim 1, wherein a wiper 11 is provided on the upper part of the reversing guide frame 6 for scraping off the dust on the rake 2 in accordance with the lifting operation of the rake 2. rake reversing device.