JP2577207Y2 - Valve for scum remover - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve for a scum removing device.

[0002]

2. Description of the Related Art FIGS. 9 to 11 show a scum removing device proposed earlier by the present inventors. A plurality of (four) sprocket shafts 200 provided in the rectangular sedimentation pond provided with this device so that the axial direction is oriented in the width direction of the pond,
A sprocket 201 is provided around each shaft 200, and two chains 202 are provided on the left and right sides of the sprocket 201. The device is driven by using some or all of the flights 203... Attached to the chain 202 to attract and remove scum (floating matter) on the water surface. The scum removal device is a trough 2
05, a guide support sheet 206, a weir member 208, and a transmission mechanism 209. The trough 205 has a gutter-like shape having an open upper part and a part of the front part of the square cross-sectional shape, and is fixed in the pond so that the longitudinal direction thereof is oriented in the width direction of the pond. Reference numeral 204 denotes a rotating shaft,
5 is supported at the left and right ends, and rotates with the movement of the interlocking arm 225 at the end. The guide support sheet 206 is made of a rubber-like material having a long band shape like the trough 205, and is attached to the front side of the trough 205 in a projecting manner so that it can be bent up and down by elastic deformation. The weir member 208 is a long, substantially triangular hollow member that is mounted in a projecting manner on the front side of the guide support sheet 206 and is provided so as to move up and down on the water surface 207 while being supported by the sheet 206. ing. The transmission mechanism 209 swings the weir member 208 up and down. The transmission mechanism 209 includes a support shaft 210, a drive arm 211, and an operation arm 212. The support shaft 210 is bridged between the widths of the pond and the drive arm 211.
Is one arm extending forward from one side of the support shaft 210. The operating arm 212 includes the drive arm 2
The arm extends in the direction of the trough 205, which is the opposite direction of the arm 11, and is one arm. Drive arm 211
A copying member 213 is provided at the tip of. The copying member 213 has a cam surface on the bottom, and the cam surface
Protrusions 213a and 213c and a recess 213 therebetween.
b has a continuous cam surface. This copying member 21
3 to move the drive arm 211 and the operating arm 212.
The roller (drive unit) 214 protruding from one end of the flight (sludge scraper) 203 pushes down the weir member 207 via the rod 224 and the interlocking arm 225. The roller 214 is attached by a bracket 215 provided at one end of the flight 203 on the copying member 213 side. This scum removal device operates as follows. When a motor (not shown) on the pond is driven, the chain 202 is driven, and the flights 203 attached to it are gently circulated in the direction of the arrow. The flights 203 ... draw sludge settled at the bottom of the pond and guide the sludge into the pit, and the led sludge is removed from the pond by a pump (not shown). Flight 203 coming upward
Is to push up the copying member 213 by the roller 214 on the side thereof. The roller 214 has a protrusion 213
a → the concave portion 213b → the protruding portion 213c in this order.
The member 213 is moved up and down while being in contact with 3. As a result, when the roller 214 hits the projection 213a in the first stage, the copying member 213 and the drive arm 211 are pushed up greatly, and the operating arm 212 is pushed down. It starts to push down. On this occasion,
The scum on the surface of the water, large or small, is introduced into the
5 excluded outside. When the roller 214 comes to the concave portion 213b, the copying member 213 and the drive arm 211 are temporarily lowered, and the operation arm 212 is raised. As a result, the weir member 208 rises slightly below the surface of the water, and the amount of water up to that point decreases. Since the amount of water decreases but the water speed increases, the suction force of the scum increases, so that both large and small scum can be attracted, and even distant scum can be smoothly attracted to a nearby area. When the roller 214 reaches the projection 213c in the second stage, the copying member 213 and the drive arm 211 are raised again, and the operation arm 212 is lowered. As a result, the weir member 208 is lowered, and the drawn scum 2
04 is guided into the trough 205 in a large amount. Since the copying member 213 is stepped in this manner, the process from drawing to suction of the scum 204 is very effectively performed. Well, in this scum removal device,
An outlet pipe 220 is connected to the bottom of the trough 205, and a communication pipe 221 provided to penetrate each pond is connected to the pipe 220. The outlet pipe 220 is provided with a valve 230. The valve 230 has a housing 231, a valve main body 232, and a rotating body, as shown in detail in FIG. 10 (the valve closed state is a broken line and the valve open state is an imaginary line) and FIG. 11 (the valve open state is shown in cross section). A shaft 233 and a lever 234 are provided. The opening 232 a of the valve 230 is opened by the kick of the lever 234 by the roller 214.
a, thereby allowing scum and water in the trough 205 to pass.

[0003]

However, the valve for the scum removing device has the following disadvantages. Since the passage 231a of the housing 231 and the opening 232a of the valve main body 232 are round holes, the kick angle θ is 90 °.
In this case, the lever 234 needs to be configured to be long and extended, and if the lever 234 is long, the operation cannot be stabilized, which causes a trouble. This invention has been made to eliminate these disadvantages.

[0004]

In order to solve the above-mentioned problem, the invention according to claim 1 is provided such that the lower part is immersed in the water surface and the upper part is above the water surface, and is fixed in the settling basin. A gutter-shaped trough configured to have an opening lower than the water surface on one side and to lead the scum and water introduced through the opening to the outside, and is provided movably up and down on the opening side of the trough. A rotary valve provided in communication with an axis of an outlet pipe connected to the trough of the scum removing device having a weir member, wherein the housing includes a housing and a valve body, and the housing includes the pipe The valve body has a space in which the valve rotates between the two passages, and the valve body rotates with the rotation center on a line perpendicular to a line connecting the centers of the two passages in the space. And a through hole that can communicate with the two passages so that the two passages can be opened and closed by the rotation. It is longer in the direction parallel to the line of rotation and shorter in the direction perpendicular to the rotation center, and the opening corresponding to the opening on the introduction side of the through hole of the passage has the same shape as the opening on the introduction side of the through hole. It is characterized by having.

The opening on the introduction side of the through hole is long in a direction parallel to the line of the rotation center of the valve body and short in a direction perpendicular to the line, and corresponds to the opening on the introduction side of the through hole of the passage. Since the opening formed has the same shape as the opening on the introduction side of the through hole, a large flow passage can be obtained even if the kick angle is small.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. 1 to 3 show an embodiment of the present invention. FIG. 1 shows the valve in the valve closed state in the valve closed state, and FIG. 2 shows the valve open state in the valve closed state. The valve of this embodiment is of a rotary type and is configured similarly to the scum removing device in the sedimentation basin as described above. The valve comprises a housing 1, a valve body 10,
A lid 20, a cap 30, and a lever 40 are provided.
The introduction pipe 50 of this embodiment has a round shape similar to that of the related art. The pipe 50 has a flange 51 at an end, and a valve is incorporated between the pipes 50. The housing 1 has flanges 2 at both ends which can be connected to the flange 51, and has passages 3 and 3 at the front and rear. The passage 3 has a round end, but is gradually elongated. In the valve body 10, the opening 11 and the through hole 12 are both uniform in shape, and as shown in FIG.
It is formed long in the direction parallel to the line of rotation center and short in the direction perpendicular to it. Seals 14 and 14 are provided between the valve body 10 and the housing 1. Rotary axis 1
A seal 21 is also provided between 3 and the lid 20. In addition, as compared with the conventional opening 232a indicated by a virtual line in FIG. 3 and the opening 11, the opening 11 and the opening 232a have the same area or the opening 11 is larger. Further, as shown in FIG. 4, the shape of the opening 11 may be an elliptical shape. Further, the opening 11 may have an elliptical shape. As shown in FIG. 6, one leading opening 11a is provided on the opening side of the opening 11 so that the leading opening 11a communicates with the passage 3 first in the passage 3, so that the opening 11 as shown in FIG. Water may not flow at one time, but may gradually increase at first. This is preferable because drainage noise is reduced. The edge of the preceding opening 11a has a function of cutting foreign matter. As shown in FIG. 7, a plurality of preceding openings 11a and a rear opening 11b may be provided.

[0007] In the above embodiment, the copying member and the transmission mechanism are configured to interlock the dam member.
Instead of these configurations, the following configuration can be used. That is, the copying member and the transmission mechanism as in the above-described embodiment are not provided for raising and lowering the weir member,
As shown by the dashed lines in FIGS. 8 and 9, the weir member 55 is made to float itself or to be floated by adding another float so that it is always kept at a level slightly lower than the water surface 56. In addition to the configuration, it may be configured to be able to move up and down following the water level 56. This allows the scum on the water surface 56 to accumulate in the trough together with the water,
The flow is started for the first time by the operation of the valve. This is a common use of a valve. The weir member is not limited to a rotating (swinging) type, and the shape is not specified, such as a plate shape.
It may be one that rises and falls in a vertical straight line or an inclined straight line. The introduction pipe may have a square cross section.

[0008]

[Effects of the Invention] As described above, the present invention provides a method for guiding the through hole.
The opening on the entry side is parallel to the line of the center of rotation of the valve body.
Longer in the direction and shorter in the direction perpendicular to it,
An opening corresponding to the opening on the introduction side of the through hole of the passage is also provided with the through hole.
Features the same shape as the opening on the introduction side of the hole
As a result, the change in the distribution area can be increased even with a small kick angle.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention in a valve closed state.

FIG. 2 is a sectional view showing a state in which the valve is open.

FIG. 3 is a front view showing an opening of a valve body.

FIG. 4 is a front view showing another embodiment of the opening.

FIG. 5 is a front view showing another embodiment of the opening.

FIG. 6 is a front view showing another embodiment of the opening.

FIG. 7 is a front view showing another embodiment of the opening.

FIG. 8 is a perspective sectional view showing a water level tracking type scum removing device.

FIG. 9 is a side view showing a conventional scum removing device and a valve.

FIG. 10 is a plan view showing a conventional valve in a valve closed state.

FIG. 11 is a sectional view of the valve in an open state.

[Description of reference numerals] 1 ... housing 3 ... passage 10 ... valve body 11 ...
Opening 12 ... Through hole 40 ... Lever 50 ... Pipe for introduction

Claims (1)

(57) [Scope of request for utility model registration] 1. A scum which is fixedly provided in a sedimentation basin so that a lower part is immersed in the water surface and an upper part is on the water surface, and has an opening lower than the water surface on one side and is introduced through the opening. and a gutter-shaped trough that is configured to derive the outside water, scum removal apparatus provided with a dam member that is vertically movable on the opening side of the trough, the tiger
Provided on the axis of the lead-out pipe connected to the
Rotary valve, housing and valve
A body, and the housing defines a passage communicating with the pipe.
Provide valve at opposite locations and rotate valve between both passages
A valve body, wherein the valve body is
The center of rotation is also on a line perpendicular to the line connecting the centers of the two passages.
Has a through hole that can rotate and communicate with the two passages.
So that the two paths can be opened and closed by the rotation.
The opening on the introduction side of the through hole,
It is long in the direction parallel to the line of rotation of the valve body.
The passage hole of the passage
The opening corresponding to the opening on the introduction side of the through hole is also the opening on the introduction side of the through hole.
A valve for a scum removal device, wherein the valve has a shape similar to a mouth .