JPH0218114Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust removal device that is installed in a waterway and removes debris flowing through the waterway.

A screen that crosses the waterway is placed from above the water surface to the bottom of the waterway, and the sludge adhering to the screen is scraped up by a rake that moves upward along the screen and discharged to the upper part of the waterway. Various types of dust removal devices have been proposed in the past. Among them, as shown in FIG.
Left and right rotary chains 4 are disposed from the water surface of the waterway 1 toward the bottom of the waterway and move on an annular moving path 3 having a path portion 3a along the screen 2. There is one in which the right and left sides of the rake 5 are rotatably mounted at appropriate intervals in the longitudinal direction. In FIG. 1, 6 is a driven sprocket that forms an arc-shaped path at the lower end of the annular moving path 3 near the bottom of the water channel 1, and 7 is a drive sprocket that forms an arc-shaped path at the upper end of the annular moving path 3. , 7, and the drive sprocket 7 and its drive device 8 are interlocked by a transmission device 9. 1
0 is a support roller provided at a pivot position of the rake 5 to the rotary chain 4, and rolls along an annular guide rail 11 disposed inside the annular movement path 3. Reference numeral 12 designates an attitude maintaining roller of the rake 5 provided at a position away from the pivot position of the rake 5, and 13 represents a guide rail for this attitude maintaining roller 12, which is disposed along and inside the annular guide rail 11. At the same time, the bottom edge and screen 2
The laterally opposed parts are not provided to allow the rake 5 to make a retracting rotation relative to the screen 2. With this configuration, screen 2 and rake 5
If a large foreign object is caught between the
is evacuated to prevent damage to the rake 5, rotating chain 4, and drive system. Reference numeral 14 denotes a guide plate that extends continuously from and above the screen 2, and is connected with a chute 14a from the upper end of which drops the residue toward the discharge section 15.

By the way, in the above-mentioned dust removal device, the conventional connection structure between the rotary chain 4 and the rake 5 is as shown in FIG. The support roller 10 and the free end boss portions 5a of the rake arms on both sides of the rake 5 are rotatably fitted to the pivot shaft 18 of the outer link plate 17 with an attachment. Therefore, the force applied to the rake 5 had to be supported by one link, and a large rotating chain 4 had to be used. As a result, there were problems in that the entire device became heavier and the required power increased.

In view of these problems, the present invention aims to provide a dust removal device that can use a lightweight and small rotary chain by devising the connection between the rake and the rotary chain.

In order to achieve this objective, the present invention has a structure in which the left and right rotation chains are each connected to a pair of inner link plates and outer link plates alternately by connecting pins, and One end of the swinging link is rotatably attached to each of the two outer link plates adjacent to the inner link plate located at By attaching the left and right sides of the rake so that it can swing freely, the force applied to the rake is distributed and supported by the two links via the swing link, and the swing chain is made small and lightweight. Although the rake is supported astride two links, by supporting the rake at the joint between the two freely rotatable swing links, the rotary chain can move at both the upper and lower ends of its movement path. To provide a dust removal device that can move smoothly even on an arcuate path.

Hereinafter, one embodiment of the present invention will be described based on the drawings. The overall configuration is substantially the same as that previously explained in FIG. 1, so the explanation will be omitted, and the connection configuration of one of the main parts, the rotary chain 4 and the rake 5, will be explained with reference to FIG. 3. . Rotating chain 4
consists of a pair of inner link plates 20 and an outer link plate 21 which are alternately connected by connecting pins, and a roller 2 is connected between the inner link plates 20.
2 is disposed so as to fit around the connecting pin. The outer link plates located on both sides of the inner link plate 20 in the longitudinal direction in the vicinity of the arrangement position of the rake 5 are composed of outer link plates 23 with attachments having pivot pins 24 protruding from the outer link plates 23. One ends of the links 25a and 25b are each rotatably supported. The other ends of these swing links 25a and 25b are connected to each other in a flexible manner by a connecting shaft 26, and the supporting roller 10 and the free end boss portion 5a of the rake arm on one side of the rake 5 are rotatably connected to the connecting shaft 26. is fitted externally.

In the above configuration, when the drive device 8 is driven, the rotary chain 4 moves along its annular movement path 3, and the rake 5 attached to it is supported by the support roller 10 rolling on the annular guide rail 11. The screen 2 rotates while the screen 2 is being moved, scrapes up the residue that has adhered to the screen 2, and drops it into the discharge section 15. During this rotation,
When the rake 5 reaches the arcuate path at both the upper and lower ends of the annular movement path 3, the straight line distance between the pivot pins 24 of the outer link plate 23 with attachment is
Although it is shorter than when traveling in a straight line,
According to the above configuration, this distance change is absorbed by the relative bending of the swing links 25a and 25b,
The rotating chain 4 rotates smoothly. If a large foreign object gets caught between the rake 5 and the screen 2 while the rake 5 is raking up the residue at the bottom of the screen 2 or along the screen 2, the rake 5 By retracting and rotating around 26 in the direction away from the screen 2, application of abnormal force to the rake 5 and the rotating chain 4 is prevented.

According to the dust removal device of the present invention, as is clear from the above description, one end of the swinging link is rotatably attached to each of the two outer link plates adjacent to the inner link plate located inwardly, and both swinging links are rotatably attached. The other ends of the moving links are connected to each other by a connecting shaft, and the rake is swingably attached to the connecting shaft, so the force applied to the rake can be distributed and supported by the two links via the swinging link, so rotation A small and lightweight chain can be used, and the entire device including the drive device can be made lightweight and compact, making it inexpensive and requiring less power.

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram showing the overall configuration of a dust removal device according to the present invention, Figure 2 is a front view showing the configuration of a conventional rotary chain and rake connection, and Figure 3 is an embodiment of the present invention. FIG. 3 is a front view showing the configuration of a connecting portion between a rotary chain and a rake. 1... Waterway, 2... Screen, 3... Circular movement path, 4... Rotating chain, 5... Rake, 10
... Support roller, 11 ... Annular guide rail, 12
... Posture holding roller, 13 ... Guide rail, 20
...Inner link plate, 21...Outer link plate, 23...Outer link plate with attachment, 24...Pivot pin, 25a, 25b...
Swing link, 26...connection shaft.

Claims (1)

[Scope of utility model registration request] A rake is swingably attached to a left and right rotating chain that moves on a circular movement path that is arranged across a waterway and has a path portion that follows a screen that is arranged from above the water surface of the waterway toward the bottom of the waterway. In the dust removal device, the left and right rotating chains are
A pair of inner link plates and an outer link plate are connected alternately with connecting pins, and a swing link is attached to each of the two outer link plates adjacent to the inner link plate located inside the left and right rotation chains. A dust remover characterized in that one end of the rake is rotatably attached, the other ends of both swing links are connected to each other by a connecting shaft, and both left and right sides of the rake are swingably attached to the opposing left and right connecting shafts. Device.