JP3286265B2 - Step filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step-type filter.

[0002]

2. Description of the Related Art Conventionally, a step-type filter for filtering waste water flowing through a water channel to remove solid contaminants is disposed at an angle to the water channel.

FIG. 2 is a perspective view showing an arrangement of a conventional step-type filter, FIG. 3 is a front view of the conventional step-type filter, FIG. 4 is a side sectional view of the conventional step-type filter, and FIG. 7 is a cross-sectional view of an upper circular motion drive unit in a conventional stepwise filter, FIG. 6 is a front view of an upper circular motion drive unit in a conventional stepwise filter, FIG.
FIG. 8 is a side view of a movable grid plate in the conventional step filter, FIG. 8 is an enlarged view of a main part of the movable grid plate in the conventional step filter, and FIG. 9 is transfer of solid contaminants in the conventional step filter. FIG. 10 is a first perspective view of a first main part showing a state where solid contaminants are transferred in a conventional step filter, and FIG. 11 is a solid perspective view of a first main part showing a state of the conventional step filter. FIG. 12 is a side view of a second main part showing a transfer state of miscellaneous substances, and FIG. 12 is a second view showing a transfer state of solid contaminants in a conventional step-type filter.
, FIG. 13 is a third side view of a main part showing a transfer state of solid contaminants in a conventional step-type filter, and FIG. 14 is a transfer state of solid contaminants in a conventional step-type filter. It is a 3rd principal part perspective view which shows this.

[0004] As shown in the figure, the step-type filter is disposed so as to be inclined with respect to a channel through which the wastewater to be filtered flows, and has a filter frame 1 and a movable grid section comprising a plurality of step-like panels. 2, a fixed grid portion 3 composed of a plurality of stepped panels alternately arranged between the panels of the movable grid portion 2, an upper circular motion drive portion 4 for driving the movable grid portion 2,
And a driven link device 5, the filter frame 1
Is a column 11, a side inclined bracket 1 forming both side surfaces
2, 12 'and a base plate 13 located at the bottom of the channel.

The movable grid portion 2 and the fixed grid portion 3 are disposed between the side inclined brackets 12 and 12 ', and the movable grid portion 2 comprises a plurality of movable grid plates 21 having a right-angled step surface 21A. A trapezoidal connecting plate 21L is disposed below the movable lattice plate 21, and a connecting member 22 connects between the connecting plates 21L. Plate-shaped outer plates 23 and 23 'are disposed on both side surfaces of the movable lattice plate 21, and the outer plates 23 and 23' are fixed to fixtures 24 and 2 'at both ends of the connecting member 22.
4 '.

Further, the fixed grid plate 3 is
1 and a plurality of fixed grid plates 31 each having a right-angled stair surface 31A, and each fixed grid plate 31 and each movable grid plate 21 are arranged alternately. The fixed grid plates 31 are connected by connecting members 32, and both ends of the connecting members 32 are fixed to the inside of the side surface inclined brackets 12, 12 'by fixing tools 34, 34'.

A drive motor M and a worm speed reducer W are disposed at the center between the upper ends of the side inclined brackets 12 and 12 ', and the upper circular motion drive unit is provided via a drive shaft WS of the worm speed reducer W. 4 is activated. The drive shaft WS protrudes outside the side surface inclined brackets 12, 12 '.

[0008] The upper circular motion drive unit 4 includes a movable lattice unit 2.
The eccentric rotary plate 41 is disposed at the upper ends of the outer plates 23 and 23 ', and is connected to the drive shaft WS and rotated, as shown in FIGS. An eccentric shaft 42 formed eccentrically is provided. The eccentric rotary plate 41 is rotatably supported by the outer plate 23 by a bearing 4a. Exercise.

Further, as shown in FIG. 4, the driven link device 5 includes an eccentric shaft 42 via the bearing 4a.
And a power transmission wire 52, and an upper link bar 53 and a lower link bar 54 disposed below the movable grid portion 2.

The upper end of the upper link bar 53 is connected to the side inclined bracket 12 via a pin P, and the lower end of the upper link bar 53 is connected to the center pin P together with the upper end of the lower link bar 54. 'Connected to the outer plate 23
The lower end of the lower link bar 54 is connected to the side inclined bracket 12 via a pin P ″. The center pin P ′ is connected to a connecting member 51 via a power transmission wire 52.

Therefore, when the eccentric shaft 42 makes a circular motion, the power transmission wire 52 reciprocates accordingly, and the lower part of the movable lattice portion 2 makes a circular motion.

That is, when the drive motor M is driven and the rotation reduced by the worm speed reducer W is transmitted to the drive shaft WS, the eccentric rotary plate 41 makes a circular motion, and the eccentric shaft 42 rotates accordingly. While moving, the upper part of the movable grid part 2 is made to circularly move. Then, the circular motion power is transmitted to the driven link device 5 via the eccentric shaft 42 and the power transmission wire 52, and the lower portion of the movable grid portion 2 is circularly moved by the driven link device 5.

In FIG. 8, a broken line indicates a trajectory of the circular movement of the movable lattice portion 2, and the trajectory is represented by a perfect circle. And
The movable lattice part 2 is moved circularly in the direction of the arrow. In this case, the points of adjacent peaks on the fixed grid plate 31 are denoted by A,
Assuming that B is a point and a valley point is C, the trajectory is set so as to pass slightly outside points A to C about a center point P between points A and B.

As described above, since the movable lattice portion 2 is moved in a circular motion, the solid contaminant S on each stage of the fixed lattice plate 31 is removed from each movable lattice portion by one circular movement of the movable lattice portion 2. Board 21
And is placed on the next upper stage of the fixed grid plate 31. In this case, since the trajectory passes slightly outside the point B, the solid contaminant S can be stably placed slightly inside on the upper step. Further, since the trajectory passes slightly outside the point C, the points A and B do not touch the solid contaminant S placed near the point C.

As described above, the movable grating 2 is made to circularly move,
The first stage shown in FIGS. 9 and 10, the second stage shown in FIGS. 11 and 12, and the third stage shown in FIGS.
By repeating the cycle consisting of the steps, the solid contaminants S on the stage of each fixed lattice plate 31 can be placed on the upper stage one by one and transported upward. The solid contaminants S can be separated and taken out.

[0016]

However, in the above-mentioned conventional step-type filter, it is necessary to form each of the movable grid plate 21 and the fixed grid plate 31 in a right-angled shape.
In addition, since it is necessary to make the upper surfaces of the movable grid plate 21 and the fixed grid plate 31 horizontal, the inclination of the movable grid plate 21 and the fixed grid plate 31, that is, the installation angle of the stair type filter is set to 45 degrees. There is a need to.

Therefore, when the water channel becomes deeper, the movable grid plate 21 and the fixed grid plate 31 need to be lengthened, so that the size of the step filter becomes large and the step filter becomes structurally unstable. . For example, the waterway is 2.7 m
At the above depth, the design of the step-type filter becomes impossible.

Further, with the rotation of the eccentric shaft 42, the circular motion power is transmitted via the power transmission wire 52 to the driven link device 5.
, But even if the eccentric shaft 42 draws a locus of a perfect circle,
The driven link device 5 draws a locus of an ellipse.
Therefore, in order to make the lower part of the movable lattice part 2 circularly move in the same manner as the eccentric shaft 42, the shape of the upper part and the lower part of the movable lattice part 2 are made different. Therefore, the cost of the step-type filter increases.

Further, since the circular motion power is transmitted through the power transmission wire 52, if the power transmission wire 52 is long, the circular motion power cannot be smoothly transmitted to the driven link device 5. Therefore, the design of the step filter is restricted.

The present invention solves the above-mentioned problems of the conventional step-type filter, and does not need to increase the size even if the water channel is deep, can be structurally stabilized, and the design is restricted. It is an object of the present invention to provide a step-type filter having no filter.

[0021]

For this purpose, in the step filter according to the present invention, a fixed grid portion, a movable grid portion,
It has a drive source and an upper elliptical motion drive unit to which rotation generated by the drive source is transmitted and causes the upper portion of the movable lattice unit to perform an elliptical motion.

The upper elliptical motion drive unit includes: a drive shaft to which rotation generated by the drive source is transmitted;
A rotating plate fixed to the drive shaft, one end of which is fixed to a predetermined position of the rotating plate and extends through a through-opening of an outermost movable grating plate of the movable grating portion; An eccentric shaft, a first eccentric shaft sliding rail disposed to extend in a first direction along the through-hole, and a rotatable first eccentric shaft sliding rail. First supporting means for reciprocatingly supporting the eccentric rotary plate, an eccentric rotary plate fixed to the other end of the first eccentric shaft, a second eccentric shaft fixed to a predetermined position of the eccentric rotary plate, A second eccentric shaft sliding rail disposed at a predetermined position of the outermost movable lattice plate so as to extend in a second direction, and the second eccentric shaft is rotatable and the second eccentric. A second support that reciprocates along the axis sliding rail
Is provided.

In another step filter according to the present invention, the fixed grid portion, the movable grid portion, the driving source, and the rotation generated by the driving source are transmitted, and the upper portion of the movable grid portion is made elliptical. An upper elliptical motion drive unit to be moved, and a driven link device disposed on a side surface of the outermost movable lattice plate of the movable lattice unit, and copying the elliptical motion of the upper part of the movable lattice unit and transmitting the copied elliptical movement to the lower part of the movable lattice unit. And

The driven link device includes a plurality of links each including a link bar extending along the outermost movable lattice plate and two link arms rotatably connected to the link bar. .

One of the two link arms is swingably supported by a side inclined fixed frame, and the other of the two link arms is swingably supported by the outermost movable lattice plate. Is done.

[0026]

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

FIG. 1 is an enlarged view of a main part of a step filter according to a first embodiment of the present invention, FIG. 15 is a front view of the step filter according to the first embodiment of the present invention, and FIG. FIG. 17 is a longitudinal sectional view of a step-type filter according to the first embodiment of the present invention, FIG. 17 is an enlarged side view of an upper portion of the step-type filter according to the first embodiment of the present invention, and FIG. -A cross-sectional view, FIG. 19 is a main-portion cross-sectional view of the staged filter according to the first embodiment of the present invention, FIG. 20 is a conceptual diagram of an upper elliptical motion drive unit according to the first embodiment of the present invention, FIG. 21 is a diagram showing a relationship between the circular motion of the upper elliptical motion drive unit and the elliptical motion of the movable lattice unit according to the first embodiment of the present invention.
FIG. 2 is a diagram illustrating a relationship between the movement of the driven link device and the elliptical movement of the movable lattice unit according to the first embodiment of the present invention.

In the figure, reference numeral 100 denotes a filter frame. The filter frame 100 is composed of a long column-shaped inclined side fixed frame 101 formed on both sides and a base plate 102 provided at the bottom of a water channel. Become. In the filter frame 100, a movable grid portion 200 including a plurality of movable grid plates 201 and the like, a fixed grid portion 300 including a fixed grid plate 301 disposed between the movable grid plates 201 and the like, An upper elliptical motion drive unit 400 for elliptically moving the upper part of the lattice unit 200, and a driven unit for transmitting the elliptical movement of the upper part of the movable lattice unit 200 to the lower part of the movable lattice unit 200 as it is, and causing the lower part of the movable lattice unit 200 to perform elliptical movement. A link device 500 is provided. The side inclined fixed frames 101 are connected to each other by a horizontal frame 103.

The step type filter having the above-mentioned structure is disposed so as to be inclined with respect to the water channel. The larger the installation angle, the larger the distance between the movable grid plate 201 and the fixed grid plate 301 is. Can be.

A drive motor M1 as a drive source is disposed at the center of the upper part of the step filter, and the rotation generated by driving the drive motor M1 is reduced by the worm speed reducer W1. The decelerated rotation is transmitted to the upper elliptical drive unit 400 via the drive shaft WS.
To move the upper portion of the movable grid portion 200 to an elliptical motion. For this purpose, as shown in FIG. 18, the drive shaft WS is disposed so as to penetrate the upper part of each side surface inclined fixed frame 101.

As shown in FIG. 19, in the upper elliptical motion drive unit 400, the rotary plate 4 is attached to the drive shaft WS.
01 is fixed, and one end of the first eccentric shaft 402 is fixed to a predetermined position of the rotating plate 401, for example, a tip. The first eccentric shaft 402 is connected to each movable lattice plate 20.
One of the outermost movable lattice plates 201 'is extended through the outermost movable lattice plate 201'. The through-hole 201h formed in the outermost movable lattice plate 201 'has a slit shape and is elongated in the horizontal direction (almost horizontal direction).

A first eccentric shaft sliding rail 403 is provided on the upper and lower edges of the through-hole 201h.
, For example, along the longitudinal direction of the through-hole 201h, the first eccentric shaft sliding rail 4
03 is provided with a groove body 403g. The first eccentric shaft 402 passing through the through-hole 201h is rotatably supported by a ball bearing 402B, and the ball bearing 402B is supported by a first eccentric shaft sliding rail 403 via the groove 403g. It reciprocates horizontally along the first eccentric shaft sliding rail 403. The ball bearing 40
The first eccentric shaft 402 is rotatable and the first eccentric shaft sliding rail 4 by the 2B and the groove 403g.
First supporting means for reciprocatingly supporting along the reference numeral 03 is constituted.

An eccentric rotary plate 404 having the same shape as the rotary plate 401 is attached to the other end (free end) of the first eccentric shaft 402, and a predetermined position of the eccentric rotary plate 404, for example, One end of the second eccentric shaft 405 is fixed to the tip. Further, a ball bearing 405B is provided at the other end (free end) of the second eccentric shaft 405,
The second eccentric shaft 405 is rotatably supported by a ball bearing 405B. And the outermost movable lattice plate 2
01 ', a second eccentric shaft sliding rail 406 is disposed at a predetermined position, and the ball bearing 405B
Is supported by the second eccentric shaft sliding rail 406 via the block 405a, and reciprocates vertically along the second eccentric shaft sliding rail 406. The second eccentric shaft 405 is rotatable by the ball bearing 405B and the block 405a.
In addition, a second supporting means for supporting the second eccentric shaft slidingly reciprocally along the sliding rail 406 is constituted.

The second eccentric shaft sliding rail 4
19 is supported by two supporting flanges SF attached to the first eccentric shaft sliding rail 403, as shown in FIG. 19, and in a second direction, for example, with respect to the first eccentric shaft sliding rail 403. They are extended in orthogonal directions.

When the drive shaft WS is rotated in the upper elliptical motion drive section 400 having the above-described configuration, the rotary plate 401 is rotated, and accordingly, the first eccentric shaft 402 is circularly moved. When the circular motion of the first eccentric shaft 402 is transmitted to the movable lattice portion 200, the ball bearing 40
2B is moved in the directions of arrows X and Y shown in FIG. 20 along the first eccentric shaft sliding rail 403,
The ball bearing 405B connected via the eccentric rotary plate 404 and the second eccentric shaft 405 is moved in the directions of arrows A and B along the second eccentric shaft sliding rail 406. Therefore, as shown in FIG. 21, the movable lattice portion 200 is moved in an elliptical manner.

As a result, solid contaminants (not shown) on each fixed lattice plate 301 can be placed on the upper stage one by one and transported upward, so that solid contaminants can be removed from the wastewater to be filtered. Miscellaneous matter S can be separated and taken out.

Next, the elliptical motion of the movable grating section 200 will be described.

As shown in FIG. 21, the trajectory of the circular motion in the upper elliptical motion drive unit 400 is a perfect circle, and the trajectory of the elliptical motion of the movable lattice plate 201 of the movable lattice unit 200 is an ellipse. A perfect circle R1 having a large diameter represents the trajectory of the first eccentric shaft 402, a perfect circle R2 having a small diameter represents the trajectory of the second eccentric shaft 405, the ellipse R3 represents the trajectory of the movable lattice plate 201, and the perfect circle R1, Each number given to R2 and ellipse R3 is 1 to 1
6, the first eccentric shaft 402 and the second eccentric shaft 40
5 and the position where the movable grid plate 201 is placed.

The driven link device 500 is disposed on the side surface of the outermost movable lattice plate 201 ', and is shown in FIGS.
As shown in FIG. 5, a long bar-shaped link bar 501 extending along the outermost movable lattice plate 201 'and a plurality of links L1, L2,.
1, L2,..., Ln include two link arms 502, 503 rotatably connected to a link bar 501, respectively. In addition, the link arm 502 is swingably supported by the side inclined fixed frame 101, and is therefore hinged to a rectangular hexahedral flange 101f attached to the front of the side inclined fixed frame 101. The link arm 503 is swingably supported by the outermost movable lattice plate 201 ', and is therefore hinged to the vicinity of the lower edge of the outermost movable lattice plate 201'.

The links L1, L2,..., Ln are provided on the side surface of the step-type filter in a required number corresponding to the length of the step-type filter. By disposing an appropriate number of links, the elliptical motion power of the upper elliptical motion drive unit 400 can be smoothly transmitted to the movable lattice unit 200.

Incidentally, the driven link device 500 includes:
The upper elliptical motion drive unit 400 is separated from the upper elliptical motion drive unit 400. When the upper elliptical motion drive unit 400 causes the upper portion of the movable lattice unit 200 to perform an elliptical motion, the elliptical motion is copied as it is and the movable lattice unit is moved. Elliptical motion of the lower part of 200. That is, as shown in FIG. 22, the link arm 502 of the driven link device 500 is swung about an end on the front side (upstream side in the flow direction of the water channel), and the back side of the link arm 503 (as shown in FIG. 22). The movable lattice portion 200 performs an elliptical motion while the end portion (downstream side in the flow direction of the water channel) swings along a predetermined trajectory. In addition, the driven link device 500 may be configured such that even if the upper elliptical motion drive unit 400 is moved in another form other than the elliptical motion,
The movement of the upper part of the movable grid part 200 is copied and transmitted to the lower part as it is.

Next, the movable grid plate 201 and the fixed grid plate 301 will be described.

FIG. 23 is a side view of the movable grid plate and the fixed grid plate according to the first embodiment of the present invention, and FIG. 24 is an enlarged view of the fixed grid plate according to the first embodiment of the present invention.

In the figure, reference numeral 200 denotes a movable grid portion,
Denotes a fixed grid portion, 201 denotes a movable grid plate, 301 denotes a fixed grid plate, and upper surfaces 201A and 301A of each stage of the movable grid plate 201 and the fixed grid plate 301 are made horizontal.

When the points of the adjacent peaks on the fixed grid plate 301 are A and B and the point of the valley is C, the trajectory of the elliptic motion is centered on the center point P between the points A and B. Are set to pass slightly outside points A to C.
In addition, 201B and 301B are side surfaces of each stage of the movable grid plate 201 and the fixed grid plate 301.

If the movable lattice plate 201 is circularly moved, the trajectory of the circular movement passes inside the point C. Therefore, when the movable lattice plate 201 is lowered, the area near the point C on the upper surface 301A is reduced. Solid contaminants (not shown) in the AR are drawn downward by the side surface 301B. However, in the present embodiment, since the movable lattice plate 201 is moved in an elliptical manner, the solid contaminants in the area AR are removed from the side surface 3.
01B will not pull you down. Therefore, solid contaminants can be reliably moved upward.

As described above, in the present embodiment, since the movable grid portion 200 is caused to perform an elliptical motion, the distance between the line connecting the points A and B and the point C on the fixed grid plate 301,
That is, the depth of each step can be increased. Therefore, many solid contaminants can be transferred. In addition, even when the installation angle of the staircase filter is set to 45 degrees or more and close to 90 degrees, the upper surfaces 201A and 301A can be horizontal, so that the movable grid plate 201 and the fixed grid plate 301 can be moved even when the water channel becomes deep. No need to lengthen. Therefore,
There is no need to increase the size of the step filter, and the step filter can be structurally stabilized.

In order to copy the motion of the upper part of the movable grid part 200 and transmit it to the lower part, there is no need to make the shape of the upper part and the lower part of the movable grid part 200 different. Cost can be reduced.

Since the elliptical motion power is transmitted via the link bar 501 (FIG. 22), the elliptical motion power can be smoothly transmitted to the driven link device 500 even if the link bar 501 becomes long. Can be. Therefore, the design of the step filter is not restricted.

Even if the size of the step filter is increased, the necessary number of links L1 and L1 corresponding to the length of the step filter is provided.
By disposing 2,..., Ln, the elliptical motion power of the upper elliptical motion drive unit 400 can be smoothly transmitted to the movable lattice unit 200.

Further, since the installation angle of the step filter can be increased, the resistance to the flow of the wastewater can be increased. Therefore, it becomes possible to arrange a large-sized step-type filter.

Next, a second embodiment of the present invention will be described. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by attaching the same code | symbol.

FIG. 25 is a side view of a movable grid plate and a fixed grid plate according to the second embodiment of the present invention. FIG. 26 is a first enlarged view of a fixed grid plate according to the second embodiment of the present invention. FIG. 27 is a second enlarged view of the fixed grid plate according to the second embodiment of the present invention.

In this case, the upper surfaces 201A and 301A are perpendicular to the longitudinal direction of the movable grid plate 201 and the fixed grid plate 301. In addition, the side surfaces 201B and 301B of each stage of the movable grid plate 201 and the fixed grid plate 301 are curved along an elliptical locus. In FIG. 26, A 'is a point corresponding to point A on fixed grid plate 301 in movable grid plate 201.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0056]

As described above in detail, according to the present invention, in the step filter, the fixed grid portion, the movable grid portion, the drive source, and the rotation generated by the drive source are provided. And an upper elliptical motion drive unit that is transmitted and causes the upper portion of the movable lattice unit to perform elliptical motion.

[0057] The upper elliptical motion drive unit has a drive shaft to which the rotation generated by the drive source is transmitted.
A rotating plate fixed to the drive shaft, one end of which is fixed to a predetermined position of the rotating plate and extends through a through-opening of an outermost movable grating plate of the movable grating portion; An eccentric shaft, a first eccentric shaft sliding rail disposed to extend in a first direction along the through-hole, and a rotatable first eccentric shaft sliding rail. First supporting means for reciprocatingly supporting the eccentric rotary plate, an eccentric rotary plate fixed to the other end of the first eccentric shaft, a second eccentric shaft fixed to a predetermined position of the eccentric rotary plate, A second eccentric shaft sliding rail disposed at a predetermined position of the outermost movable lattice plate so as to extend in a second direction, and the second eccentric shaft is rotatable and the second eccentric. A second support that reciprocates along the axis sliding rail
Is provided.

In this case, the depth of each step can be increased since the movable lattice portion is moved in an elliptical manner. Therefore, many solid contaminants can be transferred. Also,
Even when the installation angle of the step filter is 45 degrees or more and close to 90 degrees, the upper surface of each step can be made horizontal, so that even if the water channel becomes deep, the movable lattice plate and the fixed lattice part of the movable lattice part There is no need to lengthen the fixed grid plate. Therefore, there is no need to increase the size of the step filter, and the step filter can be structurally stabilized.

In addition, since the motion of the upper portion of the movable grid portion is copied and transmitted to the lower portion, it is not necessary to make the shape of the upper portion and the lower portion of the movable grid portion different from each other. Can be lower.

Since the installation angle of the step filter can be increased, the resistance to the flow of wastewater can be increased.

In another step filter according to the present invention, the fixed grid portion, the movable grid portion, the driving source, and the rotation generated by the driving source are transmitted, and the upper portion of the movable grid portion is formed into an elliptical shape. An upper elliptical motion drive unit to be moved, and a driven link device disposed on a side surface of the outermost movable lattice plate of the movable lattice unit, and copying the elliptical motion of the upper part of the movable lattice unit and transmitting the copied elliptical movement to the lower part of the movable lattice unit. And

[0062] The driven link device includes a plurality of links including a link bar extending along the outermost movable lattice plate and two link arms rotatably connected to the link bar. .

One of the two link arms is swingably supported by a side inclined fixed frame, and the other of the two link arms is swingably supported by the outermost movable lattice plate. Is done.

In this case, since the elliptical motion power is transmitted via the link bar, the elliptical motion power can be smoothly transmitted to the driven link device even if the link bar becomes long. Therefore, the design of the step filter is not restricted.

Even if the size of the step filter is increased, the elliptical motion power of the upper elliptical drive unit can be reduced by disposing the necessary number of links corresponding to the length of the step filter. Parts can be transmitted smoothly.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a main part of a stage filter according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an arrangement state of a conventional step-type filter.

FIG. 3 is a front view of a conventional step-type filter.

FIG. 4 is a side sectional view of a conventional step-type filter.

FIG. 5 is a cross-sectional view of an upper circular motion drive unit in a conventional step-type filter.

FIG. 6 is a front view of an upper circular motion drive unit in a conventional step-type filter.

FIG. 7 is a side view of a movable grid plate in a conventional step filter.

FIG. 8 is an enlarged view of a main part of a movable lattice plate in a conventional step-type filter.

FIG. 9 is a first main part side view showing a transfer state of solid contaminants in a conventional step filter.

FIG. 10 is a first perspective view of a main part showing a transfer state of solid contaminants in a conventional step filter.

FIG. 11 is a second main part side view showing a transfer state of solid contaminants in a conventional step filter.

FIG. 12 is a second perspective view showing a main part of a conventional step-type filter in a state where solid contaminants are transferred.

FIG. 13 is a third main part side view showing a transfer state of solid contaminants in a conventional stepped filter.

FIG. 14 is a third perspective view showing a main part of a conventional step-type filter in a state where solid contaminants are transferred.

FIG. 15 is a front view of the stage filter according to the first embodiment of the present invention.

FIG. 16 is a longitudinal sectional view of the step filter according to the first embodiment of the present invention.

FIG. 17 is an enlarged side view of the upper part of the staged filter according to the first embodiment of the present invention.

18 is a sectional view taken along line AA of FIG.

FIG. 19 is a cross-sectional view of a main part of the stage filter according to the first embodiment of the present invention.

FIG. 20 is a conceptual diagram of an upper elliptical motion drive unit according to the first embodiment of the present invention.

FIG. 21 is a diagram illustrating a relationship between a circular motion of an upper elliptical motion drive unit and an elliptical motion of a movable lattice unit according to the first embodiment of the present invention.

FIG. 22 is a diagram illustrating a relationship between the movement of the driven link device and the elliptical movement of the movable lattice unit according to the first embodiment of the present invention.

FIG. 23 is a side view of the movable grid plate and the fixed grid plate according to the first embodiment of the present invention.

FIG. 24 is an enlarged view of a fixed grid plate according to the first embodiment of the present invention.

FIG. 25 is a side view of a movable grid plate and a fixed grid plate according to the second embodiment of the present invention.

FIG. 26 is a first enlarged view of a fixed grid plate according to the second embodiment of the present invention.

FIG. 27 is a second enlarged view of the fixed grid plate according to the second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 200 movable lattice part 201 movable lattice plate 201 ′ outermost movable lattice plate 201h through hole 300 fixed lattice part 400 upper elliptical motion drive part 401 rotating plate 402 first eccentric shaft 402B, 405B ball bearing 403 first eccentric shaft sliding rail 403g Groove body 404 Eccentric rotating plate 405 Second eccentric shaft 405a Block 406 Second eccentric shaft sliding rail 500 Followed link device 501 Link bar 502, 503 Link arm L1, L2, ..., Ln Link M1 Drive motor WS Drive shaft

Claims (2)

(57) [Claims] 1. A fixed grid portion, (b) a movable grid portion, (c) a drive source, and (d) rotation generated by the drive source is transmitted, and an upper portion of the movable grid portion is provided. And an upper elliptical motion drive unit for elliptical motion of
(E) the upper elliptical motion drive section includes a drive shaft to which rotation generated by the drive source is transmitted, a rotating plate fixed to the drive shaft, and one end positioned at a predetermined position on the rotating plate. A first eccentric shaft that is fixed and extends through the through-opening of the outermost movable grating plate of the movable grating portion, and a first eccentric shaft that extends in the first direction along the through-opening. 1 eccentric shaft sliding rail, first supporting means for rotatably supporting the first eccentric shaft and reciprocating along the first eccentric shaft sliding rail, the other of the first eccentric shaft An eccentric rotary plate fixed to an end portion, a second eccentric shaft fixed to a predetermined position of the eccentric rotary plate, and a predetermined position of the outermost movable lattice plate disposed in a second direction so as to extend in a second direction. The second eccentric shaft sliding rail, and the second eccentric shaft rotatably, and It stepped filtration device, characterized in that it comprises a second support means for reciprocatingly supported along the second eccentric shaft sliding rail. 2. A fixed grid portion, (b) a movable grid portion, (c) a drive source, and (d) a rotation generated by the drive source is transmitted, and an upper portion of the movable grid portion is provided. An upper elliptical motion driving unit for elliptical motion of the movable lattice unit; and (e) disposed on the side surface of the outermost movable lattice plate of the movable lattice unit. (F) the driven link device includes a link bar extending along the outermost movable lattice plate, and two links rotatably connected to the link bar. (G) one of the two link arms is swingably supported by a side inclined fixed frame, and the other of the two link arms is the outermost movable grid. Swingably supported by a plate A step-type filter characterized by the following.