JPH0781256B2 - Dust remover - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a dust remover for lifting screen dust, dust, and the like (hereinafter, referred to as rubber) locked on a dust removal grid by a rake.

[Conventional technology]

As a rake type dust remover, a rake arm that supports the rake is pivotally mounted in a plane that is orthogonal to the plane of the dust removal grid, and when excessive dust is caught on the rake, the rake is centered on the pivot. In addition, there is known one which is configured so as to be pivoted to the upstream side so as to be automatically removed from the dust (Japanese Patent Publication No. 56-11811).

[Problems to be solved by the invention]

However, in the above conventional dust remover, when the distance between the pivot and the rake is large, the rotation moment of the rake arm also becomes large and the rake arm does not rotate easily. It is easy to cause. On the other hand, if the distance between the pivot and the rake is shortened, the rotation width also becomes smaller, so that the length of the rake must be shortened, and there is a problem in that the ability to lift dust is poor.

[Means for solving problems]

According to the present invention, an endless chain that is vertically circulated by a drive device is provided with an ascending side close to an upstream surface of a dust removal grid that is provided across a water channel, and mounting plates are attached to the endless chains, respectively. , The rake arm is slidably engaged with this mounting plate, and the rake arm that is raised along with the rake arm by the endless chain is lifted along the dust removal grid to lift up the debris that is locked in the dust removal grid. In the dust removing device, one of the mounting plate and the rake arm is engaged with a pin, and the other is engaged with the pin to separate the rake from the dust removal grid when the rake is overloaded, and the rake arm's own weight on the descending side. By forming a guide groove that returns the rake to its original position by It is intended.

[Action]

When the drive device is operated, the rake circulates together with the endless chain, catches the rubbers locked on the dust removing grid, and lifts up along the dust removing grid. When the weight of dust is above the limit, the rake arm and the mounting plate slide while the pin and guide groove engage and reach another engagement position, and the rake is automatically separated from the dust removal grid by separating it from the dust removal grid. And the dust remover will not be damaged due to overload. When the rake arm is reversed and comes to the lower side, the rake arm is returned to its original position by its own weight, and the rake moves up along the dust removal grid to pick up dust.

〔Example〕

The attached drawings show an embodiment of the present invention, in which reference numeral 1 is a dust removing grid. This dust removal grid 1 is for locking in dust that has flowed in, and is provided diagonally while crossing the water channel 2 and arranging the upper part on the downstream side and the lower part on the upstream side.

The endless chain 3 is provided on the left and right of the upstream side of the dust removal grid 1.
Is provided around the upper and lower sprocket wheels 4 and 5, and is circulated by the drive device 6 in a direction in which the side close to the upstream side surface of the dust removal grating 1 rises (counterclockwise direction in FIG. 1). It is configured to be.

On the inner surfaces of the left and right endless chains 3, 3 (only one of which is shown in the figure) facing each other, pivots 7 are provided so as to project at predetermined intervals, and the pivots 7 are provided with mounting plates 8 respectively. Is pivotally attached at its root end and is rotatably mounted in a plane (a plane perpendicular to the paper surface in FIG. 5) orthogonal to the plane of the dust removal grid 1. Guide rollers 9 and 10 are attached to the lower outer surfaces of the pivot 7 and the mounting plate 8, respectively, and pins 11a and 11b, which are arranged on the left and right and above and below, are formed on the inner surface of the mounting plate 8 so as to project therefrom. There is. A rake arm 13 formed by penetrating a J-shaped guide groove 12 is formed in the mounting plate 8 and the pins 11a, 11 are formed in the guide groove 12.
It is slidably attached through b and supports a rake 14 horizontally between opposing rake arms 13. Mounting plate 8
When ascends, the pins 11a, 11b push the inner edge of the guide groove 12 to ascend the rake arm 13, but these pins 11a, 11b and the guide groove 12 are adapted to take two engaging positions. . That is, as shown in FIG.
The lower pin 11b is the lowermost engaging portion 12a of the guide groove 12 (7th
When the rake arm 13 is pushed by engaging with the rake arm 13 which is formed by bulging slightly upward as shown in the figure, the upper pin 11a
Is in the straight portion 12b of the guide groove 12, keeps the rake arm 13 in a posture substantially parallel to the mounting plate 8, and the upper pin 11a engages with the upper edge of the guide groove 12 as shown in FIG. When is pressed, the lower pin 11b also comes to the straight portion 12b, and the rake arm 13 tilts so as to lower the rake 14. Further, when the mounting plate 8 reaches the descending side D from the state shown in FIG.
The weight of 13 and the rake 14 lowers to return to the engagement state of FIG.

Inner guide rails 16 and 17 for guiding the endless chain 3 are provided on the descending side D and the ascending side U of the endless chain 3.
Outer guide rails 18 are laid from the lower part of the endless chain 3 on the descending side D to the upper part of the ascending side U, and the inner guide rails 19 for guiding the guide rollers 9 and 10 are provided on the descending side D of the endless chain 3. However, an outer guide rail 20 that guides the guide rollers 9 and 10 is provided on the rising side U of the endless chain 3, and further from the upstream position of the lower portion of the inner guide rail 19 to the lower portion of the outer guide rail 20. Outer arc-shaped guide rails 21 for guiding the guide rollers 9 and 10 are provided,
The posture of the mounting plate 8 is controlled so as to be substantially along the endless chain 3. Although not shown, an inner arc-shaped guide rail is installed in place of the outer arc-shaped guide rail 21 in a portion that orbits the upper sprocket 4, and guides the guide rollers 9 and 10 to gradually tilt the mounting plate 8. It is designed to be reversed.

Reference numeral 23 in FIG. 1 is a scraping lever that scrapes off the dust trapped on the rake 10 into the discharge port 24.
It is designed to be rotated by a cylinder 25.
Is a belt conveyor that carries this garbage.

Next, the operation of the dust removing device according to the present invention configured as described above will be described.

When the drive device 6 is activated to circulate the endless chain 3, the rake 14 rises along the dust removing grid 1 in the state shown in FIG. Withdraw. At this time, Endless Chain 3
Since the guide rollers 16, 17, 18 are guided and the guide rollers 9, 10 of the mounting plate 8 are guided by the guide rails 19, 20, 21, the posture is always controlled so as to be along the endless chain 3.

The rising rake 14 is caught by heavy rubber and the rake 14
If an excessive load is applied to the rake arm 13, the rake arm 13 slides and inclines with respect to the mounting plate 8 while the pins 11a and 11b are in sliding contact with the guide groove 12, and as shown in FIG. It escapes from No. 1, climbs up avoiding rubbers, and continues operation. Therefore, the drive device 6 is not overloaded, and damage to the rake arm 13 and other structural parts is prevented. The rake arm 13 reaches the upper sprocket 4 in this state, is inverted and turned upside down, returns to the original state by its own weight, and reaches the rising side U again. When a relatively large amount of dust is locked on the dust removing grid 1, the rake arm 13 repeats the above process and escapes many times.
If the situation continues as it is, some kind of alarm device is provided to notify it and the dust is removed manually.

In this dust remover, the pin 11a,
Once 11b disengages from the engaging portion 12a of the guide groove 12, the rake arm 13 falls by the action of its own weight and shifts to the state of FIG. 8, so the engaging depth of the engaging portion 12a should be changed. This makes it possible to adjust the "easiness of escape" of the rake 14. Further, since the rake arm 13 is not pivotally attached to the mounting plate 8 and moves laterally while sliding downward, the radius of curvature of rotation becomes large, and the rake arm 13 has a sufficient clearance width, and further the rotation is possible. It does not require a great deal of force. Further, when it comes to the descending side D, it returns to its original position by its own weight, so that there is an advantage that a complicated guide is not required and dust on the bottom of the dust removing grid can be sufficiently scraped.

FIG. 9 and FIG. 10 show another embodiment of the present invention, in which the guide groove 26 is divided into upper and lower linear portions 26a and curved portions 26b, and the mounting plate 8 and the rake arm 13 are separated. An elastic member (leaf spring) 29 for urging the mounting members 27 and 28 in a direction in which they are separated from each other is provided therebetween. Rake arm
When 13 is on the ascending side U of Endless Chain 3,
In the state shown in FIG. 9, it rises and scrapes off rubber, but if a force larger than the biasing force of this elastic member 29 acts, the pins 11a, 11
The b slides in the guide groove 26 and becomes the "escape" position as shown in FIG. In this case, if the biasing force of the elastic member 29 is set to a certain level or more, the rake arm 13 returns to the original position when the mounting plate 8 is lifted and the load is released, and the scraping is continued. Note that the lower end of the guide groove 26 may be provided with an engaging portion as in the previous example.

In this example, by changing the urging force of the elastic member 29, the operation of “escape” can be controlled, and the property of the dust retained on the dust removal grid 1 and the change in the situation such as the water level can be controlled. There is an advantage that it is easy to handle.

11 and 12 show another embodiment of the present invention, showing an example of the coupling structure of the pivot 7 and the mounting plate 8. That is, a disc 31 is formed at the tip of the pivot 7, and
At the tip of the mounting plate 8, the disc 31 is fitted, and a support member 33 having a recess 32 for rotatably supporting the pivot 7 is attached. The circular plate 31 is mounted in the recess 32 by a fixing plate 35 fixed by bolts 34, and a fan-shaped convex portion 36 is formed on the outer periphery thereof. On the other hand, in the recess 32, a recess 37 having a width wider than that of the projection 36 is formed, and the disc 31 and the support member 33 are relatively rotated by an angle corresponding to the difference in width. It is possible. The convex portion 36 and the concave portion 37
Edges of the mounting plate 8 are set so as not to contact each other when the mounting plate 8 is parallel to the chain 3. For example, when the mounting plate 8 passes through the upper sprocket 4 and reaches the descending side D, the rake arm 13 and the rake are bouncy. When the mounting plate 8 and the mounting plate 8 fall toward the upstream side, they come into contact with each other to prevent further relative rotation and prevent the mounting plate 8 from turning over.

〔The invention's effect〕

As described above, the dust remover of the present invention, the endless chain that is vertically circulated by the drive device, is provided with the rising side close to the upstream side surface of the dust removing grid provided across the water channel, Attach a mounting plate to each endless chain, and slidably engage the rake arm with this mounting plate. In a dust remover equipped with a rake that lifts up debris, engage one of the mounting plate and the rake arm with a pin, and the other with the pin to separate the rake from the dust removal grid when the rake is overloaded. In addition, a guide groove is formed to return the rake to its original position by the weight of the rake arm when descending. To travel a long distance with a small force as compared with the case where Kiamu is pivotally mounted. Therefore, when an excessive amount of dust is applied to the rake, the rake is moved with an appropriate force and a sufficient distance to be removed from the dust, so that the drive device and other structural parts are not damaged. Also, by changing the shape of the guide groove or disposing an elastic member between the mounting plate and the rake arm, the force with which the rake arm is disengaged can be adjusted, and it is easy to deal with the situation. Since it returns as the mounting plate circulates, it does not require a complicated guide or the like, and has excellent effects such as a simple structure and low manufacturing cost.

[Brief description of drawings]

FIG. 1 is a side view of a dust removing device according to the present invention, and FIG.
II-II arrow view of the figure, FIG. 3 is a III-III arrow view of the same, FIG. 4 is an enlarged view of the bottom of FIG. 1, and FIG. 5 shows the attachment state of the mounting plate and the rake arm to the endless chain. FIG. 6 is a sectional view showing the relationship between the mounting plate and the rake arm, FIG. 7 is an enlarged view of the guide groove portion, and FIG. 8 is a drawing showing the relationship between the mounting plate and the rake arm in other states. 9 and 10 are drawings showing another embodiment of the present invention, and FIGS. 11 and 12 are drawings showing yet another embodiment of the present invention. 1 ... Dust removal grid, 2 ... Water channel, 3 ... Endless chain, 6 ... Drive device, 8 ... Mounting plate, 11a, 11b ... Pin, 12,26 ... Guide groove, 13 ... Rake arm, 14 ……rake.

Claims (1)

[Claims] 1. An endless chain which is circulated up and down by a drive device is provided with an ascending side close to the upstream side surface of a dust removal grid provided across a water channel, and each endless chain has a mounting plate. The rake arm is slidably engaged with this mounting plate, and the rake arm is raised along with the rake arm by the endless chain along the dust removal grid and is locked to the dust removal grid. In a dust removing device having a rake attached to it, a pin is attached to one of the mounting plate and the rake arm, and the other pin is engaged with the pin,
Dust removal characterized by forming a guide groove formed to separate the rake arm from the dust removal grid when the rake is overloaded and to return the rake arm to the original position by the weight of the rake arm on the descending side. apparatus.