JP3711525B2 - Scum remover - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scum removing device for collecting and removing scum floating on a water surface such as a sedimentation basin, and in particular, is intended to follow water surface fluctuations and to ensure a scum removing function with the same stroke even after water surface following. The present invention relates to a scum removing device that performs.
[0002]
[Prior art]
Scum floats on the water surface of the first or final sedimentation basin and needs to be removed constantly. For this reason, a cylindrical scum schema is installed in a state where both ends are supported, the scum is swallowed by rotating the opening of the schema forward, and the scum swallowing is stopped by returning the opening upward. However, since this is a both-ends support system, there was a problem that it was difficult to rotate.
[0003]
For this reason, the applicant of the present application has a trough fixedly installed, an opening formed in the trough is set below the water surface, and a dam is provided in the opening. The weir in this case has a long cylindrical cross section and can swing back and forth by rotating shafts provided at both left and right ends of the base. The weir is moved up and down via the driving means using the power of the flight that can circulate in the sedimentation basin, and the weir is inclined forward and upward with the lower edge of the opening below the water surface as the base. A certain time is set as a damming state, and a state where it is lowered downward from the posture is set as a swallowing state.
[0004]
[Problems to be solved by the invention]
By the way, the water level in the sedimentation basin usually has some fluctuations over time, but until now, the weir did not follow, so if the water level rose, it swallowed too much water, and if the water level dropped, the scum I couldn't do as much as I expected.
There are scum removal devices for this purpose, but none of them can be denied structural complexity, and there has been a demand for an extremely simple and reliable operation.
The present invention has been made to solve the above-described problems, and an object of the present invention is to enable a reliable operation while being structurally simple.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is configured such that scum water on the surface of the water and some scum water flows in and flows out in a certain direction when the damming portion is below the water surface. A scum processing means, an actuating member that reciprocates in a fixed direction, an engaging / disengaging member that is provided with an engaging / disengaging part and that is always urged in a constant rotating direction, and one end of An engaging / disengaging member provided with an engaging / disengaging part that can be engaged / disengaged with the engaging / disengaging part of the engaging / disengaging member, and the other part connected to the damming part side are pressed against the engaging / disengaging member side. And a return means for returning the engaging / disengaging member in a direction opposite to the direction, and the engaging / disengaging portion and the engaging / disengaging portion are separated from each other when the operating member is restored. Becomes movable with respect to the engagement / disengagement member, and the operation member operates in one direction. Damming portions by interlocking engagement and disengagement receiving material and disengagement portion and disengaging receiving disengaging member rotates and engages is adapted to interlock.
[0006]
According to a second aspect of the present invention, in the first aspect, the engaging / disengaging material is a rod-shaped member, and the engaging / disengaging portion is a rack-shaped tooth.
[0007]
According to a third aspect of the present invention, in the first or second aspect, the damming portion is composed of an upper portion of a dam provided separately at the front portion of the fixed trough, and is vertically It is swingably supported.
[0008]
According to a fourth aspect of the present invention, in any one of the first to third aspects, the urging means is a spring.
[0009]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the actuating member operates with a copying cam provided in the pond so as to respond to a flight moving in the settling pond. .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
As shown in FIG. 5, reference numeral 1 denotes a water surface of a sedimentation basin, and a chain flight type sludge scraping device is configured below the water surface 1. The sludge scraping device includes a flight 3 that circulates so as to pass horizontally from the pond bottom 2 to near the water surface 1 and descend obliquely and return to the pond bottom 2. This flight 3 is driven by a chain (not shown).
[0011]
A bracket 4 is attached to the flight 3 in the vicinity of the left end when viewed from the direction facing the traveling direction, and a roller 5 is provided at the upper end of the bracket 4. A rotating pipe 7 supported at both ends with the longitudinal direction in the pond width direction is provided slightly above the trajectory through which the roller 5 passes slightly above the pond bottom 2.
[0012]
The rotating pipe 7 supports a cam 8 that follows the moving direction of the roller 5 and an arm that includes an interlocking lever 9 on the rear side. The copying cam 8 has a bent rod shape including a first cam 8a and a second cam 8b projecting lower than the first cam 8a. The copying cam 8 may have a plate formed in a similar shape. The copying cam 8 is heavier than the interlocking lever 9 and, therefore, usually has a downward moment acting as shown by an arrow, so that the interlocking rod 53 connected to the interlocking lever 9 is lifted.
[0013]
When the roller 5 reaches the first cam 8a, the copying cam 8 is lifted, but when the roller 5 reaches the second cam 8b, the copying cam 8 is further lifted.
[0014]
The main body side of the scum removing device includes a fixed trough 12. The trough 12 has a cross-sectional shape as shown in FIG. 5, and details are as shown in FIGS. 1 to 4. The trough 12 includes a bottom plate portion 12a and a back plate portion 12b so as to be L-shaped, and includes a flange 12c at the upper end of the back plate portion 12b. A front plate portion 12d is provided vertically upward from the front end portion of the bottom plate portion 12a, and a mounting plate portion 12e is provided obliquely inward from the upper end of the front plate portion 12d.
[0015]
As shown in FIGS. 1 and 2, the trough 12 includes mounting flanges 13 at both left and right ends. The flange 13 includes a communication port 14 communicating with the inside of the trough 12, and is connected to the communication trough 15 of FIG. The communication trough 15 is passed through a hole formed in the side wall of the sedimentation basin by a chip and fixed by concrete. The trough 12 is slightly lowered and inclined in the direction in which the scum water flows.
[0016]
The mounting flange 13 includes a square plate portion as shown in part in FIG. As shown in FIG. 3, the plate portion is provided with a bearing portion 17. The bearing portions 17 are arranged on the left and right sides, and a rotation shaft 20 protruding from the base portion of the side plate 19 fixed to both ends of the weir 18 is inserted into each of the bearing portions 17 so as to be rotatable. The rotary shaft 20 can be moved and adjusted up and down.
[0017]
The weir (damming portion) 18 is a hollow, flat rectangular tube having a square front end and a round rear end. The side plate 19 has a fan shape, and has a notch 19a on its outer periphery so that the scum can be easily swallowed from the side when rotated downward. A front seal 22 made of an inflection rubber plate is mounted between the mounting plate portion 12e and the front surface of the base of the weir 18, while a side seal 23 that always contacts the side plate 19 from the flange 13 toward the side plate 19. Is provided. The weir 18 and trough 12 constitute scum processing means.
[0018]
As shown in FIG. 1, an L-shaped adjustment plate 25 that is movable and adjustable is attached to the left side plate 19. A fixed plate 27 is attached between the front and rear flanges 13 of the trough 12, and a fulcrum shaft 28 whose axial center is oriented in the longitudinal direction of the trough 12 is inserted and fixed to the fixed plate 27. Around the fulcrum shaft 28, a horizontal interlocking arm (operation member) 31 is supported through a bearing block 29 so as to be swingable up and down.
[0019]
A cylindrical body 33 into which the manual lever 32 is inserted is provided at the rear end of the interlocking arm 31, and a weight 34 that constantly biases the interlocking arm 31 in the rearward downward direction is attached to the bottom surface thereof. The amount of the weight 34 can be made variable, or the movement can be adjusted. Further, as shown in FIG. 4, a stopper 35 for returning to the horizontal position and stopping is provided opposite to the interlocking arm 31.
[0020]
As shown in FIG. 3, the interlocking arm 31 is located on the side of the flange 13 so as not to hit the flange 13, and the engaging / disengaging arm 38 swings back and forth via a shaft 37 at the front end thereof. It is provided freely. The engagement / disengagement arm 38 is obtained by welding and integrating an upper stopper 39 and a lower stopper 40 between a pair of left and right plates. The lower stopper 40 also has a weight function that always urges the engaging / disengaging arm 38 in the forward downward direction.
[0021]
An angle side piece 42 is attached to one side surface of the engagement / disengagement arm 38. The side piece 42 is attached to the engagement / disengagement arm 38 with a bolt 44 through a spacer 43. The side piece 42 is provided with a round through hole 45, and an engagement / disengagement tooth (engagement / disengagement portion) 46, which is movable and adjustable, is attached in front of the side piece 42.
[0022]
48 is an engaging / disengaging material, and a large number of engaging / disengaging teeth (engaging / removing portions) 49... Made of a rack are formed on one side facing the engaging / disengaging teeth 46 of the round rod. The engagement / disengagement material 48 is provided with stoppers 50 on the upper and lower sides, and is inserted through the through-hole 45, and the lower end thereof is coupled to the adjustment plate 25.
[0023]
A cylindrical (or solid shaft-shaped) interlocking shaft 52 is rotatably provided at the tip of the engagement / disengagement arm 38. As shown in FIG. A hole 52a is formed, and a vertical interlocking rod 53 is inserted through the through hole 52a so as to freely move up and down.
[0024]
As shown in FIG. 5, the lower end of the interlocking rod 53 is rotatably coupled to one end of the interlocking lever 9 via a connecting shaft 54, and the upper end thereof is inserted as described above. Further, the interlocking rod 53 has a screw shaft 55 at the upper part, and upper and lower screw cylinders 59 and 60 are formed around the screw shaft 55 to form a play 56 with adjustable spacing. An operation nut 56 is fastened to the upper end of the interlocking rod 53, and the interval can be changed by twisting the nut 56 left and right from the pond. Therefore, as shown in FIG. 4, the cylinder 57 is fixed on the shaft of the interlocking rod 53, and the welding nut 58 at the lower end of the screw shaft 55 is rotatable in the cylinder 57.
[0025]
As shown in FIG. 5, on the pond bottom 2, the roller 5 advances at a slow speed in the direction of the arrow. Meanwhile, the copying cam 8 is in a state of being lowered and biased by its own weight as shown by an arrow around the center of the rotary pipe 7. The weight is transmitted to the interlocking lever 9 as a rotational moment, and pushes up the interlocking rod 53 as shown by an arrow.
[0026]
In this state, as shown in FIG. 4, the flange of the lower screw cylinder 60 pushes up the interlocking shaft 52, and thereby the engagement / disengagement arm 38 is pushed up. When the arm 38 is pushed up, the weight of the stopper 40 is overcome and a clockwise force is obtained around the shaft 37, but when the stoppers 39, 40 hit the tip of the interlock arm 31, the interlock arm 31 is rotated clockwise. Energize. However, the interlocking arm 31 is received by the stopper 35 and is stationary without rotating beyond the horizontal posture. The engagement / disengagement material 48 is drowned into the through hole 45 so that the upper end is on the trough 12 side, and is separated from the engagement / disengagement tooth 46.
[0027]
Next, as shown in FIG. 6, when the roller 5 hits the copying cam 8, the copying cam 8 is lifted and the interlocking rod 53 is lowered. As a result of this lowering, the flange of the lower screw cylinder 60 that has been hitting it tends to move away from the interlocking shaft 52, and the engagement / disengagement arm 38 gradually lowers the neck. The interlocking arm 31 is kept horizontal by the action of the weight 34. A magnet may be used instead of the weight 34.
[0028]
In this way, the engagement / disengagement tooth 46 provided on the side of the engagement / disengagement arm 38 that lowers the neck moves closer to the engagement / disengagement tooth 49 of the engagement / disconnection material 48, and the both engage with each other. FIG. 6 shows the engaged state. When the interlocking rod 53 is lowered in this engaged state, the flange of the upper screw cylinder 59 comes into contact with the interlocking shaft 52.
[0029]
As shown in FIG. 7, when the roller 5 further raises the scanning cam 8, the interlocking rod 53 is pulled down, and the interlocking arm 31 is pulled down via the engagement / disengagement arm 38 while maintaining the engaged state. As a result, the weir 18 is pushed down through the engaging / disengaging material 48, and the scum water starts to be swallowed. The copying cam 8 is lowered by the advance of the roller 5 and then lifted again, so that the weir 18 also rises and lowers. However, the engagement state is maintained during that time.
[0030]
When the roller 5 passes the copying cam 8, the engaging / disengaging arm 38 and the interlocking arm 31 are simultaneously lifted by the force of the weight 34 while maintaining the engaged state from the lowered state. As shown in FIG. 5, the interlocking arm 31 hits the stopper 35 and becomes horizontal. However, when the interlocking rod 53 is lifted by the weight of the copying cam 8, the engagement / disengagement arm 38 is lifted and returned to the horizontal state. In this state, the engagement / disengagement material 48 is disengaged from the engagement / disengagement teeth 46, and the engagement / desorption material 48 is in a state of being drowned in the through hole 45 as shown in FIG. Therefore, even if the weir 18 moves up and down due to fluctuations in the water level, the engagement / disengagement material 48 can move up and down independently through the through holes 45 to cope with fluctuations in the water level.
[0031]
The embodiment shown in FIGS. 8 to 14 is a water level follow-up type scum removing device, in particular, which can more reliably switch between the water level follow-up state and the operation state.
[0032]
A communication trough 70 is inserted and supported on the left and right side walls of the sedimentation basin, and a fixed trough 71 is horizontally mounted between the communication troughs 70 by bolts. The trough 71 is configured as one of scum processing means. The front part of the trough 71 is lowered, and this is the base part 72. The pedestal 72 extends in the longitudinal direction of the trough 71.
[0033]
A bracket 73 formed in an L shape is erected on the upper surface of the left side (FIG. 9) as viewed from the front of the platform 72, but is not erected on the right side. Bearing portions 74 are fixed to the left and right of the base portion 72, and the weir 76 and the side plates 77 at both ends thereof are supported so as to be vertically swingable so that the rotary shaft 75 is inserted into these. A side seal 78 (see FIGS. 8 and 10) is provided between the left side plate 77 and the bracket 73. A side seal is also provided between the right side plate 77 and the inner surface of the trough 71.
[0034]
The weir 76 is also a damming portion. The outer surface of the side plate 77 is provided with a round columnar contact 80, which is rotatable between a front stopper 81 and a rear stopper 82 provided before and after the bracket 73, and is fixed. The weir 76 is operated only in the angular range.
[0035]
Between the lower end of the weir 76 and the front surface of the trough 71, a front seal 83 for preventing water from entering from the front is formed and attached with a flexible rubber. The weir 76 is a hollow type and can float with its own buoyancy and can follow the water level.
[0036]
Reference numeral 85 denotes a fulcrum shaft, which is horizontally provided at the upper rear portion of the bracket 73. An operating arm 86 as an operating member is supported on the fulcrum shaft 85 so as to be swingable up and down. The operating arm 86 includes a portion in which a pair of strip length plates are separated from each other in the left and right directions except that the tip is a U-shaped portion.
[0037]
A rotating piece 87 is provided at the tip of the operating arm 86, and a connecting pipe 88 that is interlocked with a copying cam that operates at the bottom of the pond is inserted into the up-and-down hole opened in the piece 7 so as to be movable up and down. . The upper part of the connecting pipe 88 is a screw shaft 89, and an upper screw cylinder 90 and a lower screw cylinder 91 are screwed to the outer periphery so as to be vertically adjustable. It is stopped by. In addition, since the flanges of the screw cylinders 90 and 91 are separated from each other, even if there is a fluctuation in the water level, which will be described later, the play amount can be absorbed.
[0038]
The connection pipe 88 is pulled down by interlocking, so that the operating arm 86 is pulled down when the flange of the upper screw cylinder 90 hits the piece 87.
[0039]
On the other hand, a lever insertion tube 94 is erected at the rear end of the operating arm 86 so that the manual lever 95 is inserted, and a weight 97 defined by a fixed return angle by the arm stopper 96 is moved and adjusted. It is installed freely.
[0040]
An engaging / disengaging member 101 is provided at the front portion of the operating arm 86 in a state where the shaft portion 100 is rotatably supported. The engaging / disengaging member 101 has a through hole 102 in the vertical direction, an upper plate 104 having a wedge-shaped engaging / disengaging portion 103 on the upper surface, and a lower plate 106 having a shift restricting projection 105 on the lower surface. It is mounted with a fastener such as. The lower plate 106 constitutes one of the return means, extends long, and hits a return stopper (one of the return means) 108 mounted on the mounting plate 107 protruding from the bracket 73 from below. The upper plate 104 and the lower plate 106 can be adjusted in position.
[0041]
110 is an engaging / disengaging material, and the receiving material 110 is a round rod-like member as in the above-described embodiment, and is a stainless steel member integrally formed with a rack-like engaging / disengaging portion 111 on the back side. A lower limit stopper 113 is provided at the upper end, and an upper limit stopper 114 is provided below the engagement / disengagement unit 111 so as to be vertically adjustable. Reference numeral 115 denotes a connecting shaft that connects the engaging / disengaging material 110 to the side plate 77.
[0042]
FIGS. 8 to 12 show a state in which the weir 76 is lifted and returned to the water surface to block the inflow of scum. As shown in FIG. 11, the hit 80 hits the rear stopper 82, and the weight 97 hits the arm stopper 96. In this state, the buoyancy of the weir 76, the rotational force by the weight 97, etc. act as the restoring force. Further, the engagement / disengagement material 110 has a vertical axis shape, and the through hole 102 of the engagement / disengagement member 101 is also vertical by contacting the return stopper 108 so that the lower plate 104 is horizontal.
[0043]
Thereby, when the engaging / disengaging part 103 is separated from the engaging / disengaging part 111, the weir 76 and the engaging / disengaging member 101 are moved up and down to follow the water level when the water level rises and falls. The rear stopper 82 may be provided with a spring.
[0044]
In this state, the engagement / disengagement part 111 may move rearward in the through hole 102 and engage with the engagement / disengagement part 103, but this is because the deviation restricting projection 105 is more disengaged than the engagement / disengagement part 103. Since it protrudes to the 103 side, it is prevented, and the engaging / disengaging material 110 can freely move up and down without engaging.
[0045]
When the copying cam is pushed up by the roller at the bottom of the pond, the connecting pipe 88 is lowered in the direction of the arrow shown in FIG. As a result, the flange of the upper screw cylinder 90 comes into contact with the piece 87 to pull down the operating arm 86. When the operating arm 86 is lowered, the spring 116 that is wound around the shaft portion 100 and constantly urges the engaging / disengaging member 101 in the direction of the arrow acts and the lower plate 106 moves away from the return stopper 108, thereby It begins to rotate relative to the actuating arm 86.
[0046]
As the engagement / disengagement member 101 rotates, the engagement / disengagement portion 103 starts to engage with the engagement / disengagement portion 111 and gradually gradually engages. Since the engaging / disengaging member 101 and the engaging / disengaging material 110 are in a state of being twisted, the engagement is ensured. In addition, since the deviation restricting projection 105 is separated from the engaging / disengaging material 110, there is no inconvenience for the engagement.
[0047]
When the connecting pipe 88 is further lowered in this engaged state, the weir 76 is pushed down as shown by the arrow in FIG. FIG. 14 shows a state in which the weir 76 is greatly lowered and the damming portion is lowered below the water surface and scum water is swallowed. The engaging / disengaging member 101 rotates relative to the operating arm 86 while maintaining engagement with the engaging / disengaging member 110.
[0048]
The stroke for pushing down the weir 76 is always constant. The pressed state in FIG. 14 continues for a certain period of time, but when the roller passing through the bottom of the pond passes through the copying cam, the connecting pipe 88 has the weight of the copying cam, the buoyancy of the weir 76, and the weight 97. It is lifted by the action of the rotational force, etc., and returns again while maintaining the engaged state as shown in FIG.
[0049]
When the connecting pipe 88 is further lifted from the state of FIG. 13, the lower plate 106 hits the return stopper 108, so that the engagement / disengagement member 101 starts to rotate relative to the engagement / disengagement material 110, The detachment from the engagement / reception unit 111 is performed. As a result, as shown in FIG. 12, the engagement / disconnection material 110 becomes free in the through hole 102 of the engagement / disengagement member 101, and allows the weir 76 to follow the water level.
[0050]
The spring 116 can be replaced with a means for urging with a weight.
Further, as shown in FIG. 15, the connecting pipe 88 may be disposed on the right or left side of the operating arm 86.
Further, separately from this, the engaging / disengaging material 110 may be disposed within the width of the operating arm 86.
The return stopper 108 can be replaced with a chain material such as a chain (including a link chain).
[0051]
The push-down stroke of the weir 76 can be changed by removing the pine needle pin 92, rotating the upper screw cylinder 90 up and down, and inserting the pin 92 again.
[0052]
In order to obtain the driving force, as described above, the one from the bottom of the pond and the method of driving the operating arm 86 with the roller 120 of the flight 119 by arranging the cam 118 on the water surface as shown in FIG. There is.
[0053]
The present invention may be applied to the structure shown in FIG. 16, and in this case, the engaging / disengaging member 101 is provided at the end of the operating arm 86.
[0054]
In addition to the above embodiment, the fixed trough can be replaced with a cylindrical trough (scum skimmer) type. The upper end of the opening is a damming portion.
【The invention's effect】
Since the present invention is configured as described above, it is possible to provide a scum removing device that is structurally simple and can be reliably operated.
[Brief description of the drawings]
FIG. 1 is a perspective view of a scum removing device according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a right side portion of the apparatus.
FIG. 3 is a plan view showing a right part of FIG. 1;
4 is a longitudinal sectional view of FIG. 3;
FIG. 5 is an operation diagram illustrating a state in which the scum swallowing restriction state and the water level follow-up posture are present.
FIG. 6 is an operation diagram showing a state where the engaging / disengaging arm is engaged with the engaging / disengaging material.
FIG. 7 is an operation diagram showing a state in which the engagement / disengagement arm and the interlocking arm are pulled down and the scum is swallowed.
FIG. 8 is a side sectional view showing another embodiment.
FIG. 9 is a front view of the embodiment.
10 is a plan view of FIG. 8. FIG.
11 is a cross-sectional view of the main part of FIG. 9;
FIG. 12 is a side view in which the main part of FIG.
FIG. 13 is a side sectional view showing an engaged state.
FIG. 14 is a side sectional view showing a state where the weir is pushed down;
FIG. 15 is a plan view showing another embodiment.
FIG. 16 is a side sectional view when applied to a water surface drive system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Water surface 5 ... Flight 7 ... Settling pond 12,41,48,57,59,63,70,83,94,97 ... Trough 16,44,48,52,57,59,62,65,72,79 , 89, 93, 102 ... Weir 71 ... Trough 76 ... Weir 86 ... Actuating arm 101 ... Engaging / disengaging member 103 ... Engaging / disengaging part 108 ... Returning stopper 110 ... Engaging / disengaging material 111 ... Engaging / removing part.

Claims (5)

The scum treatment means that allows the scum water on the surface of the water and some scum water to flow in and out in a certain direction when the damming portion is below the water surface, and an actuating member that reciprocates in a certain direction And an engagement / disengagement member provided on the actuating member so as to be always urged in a constant rotational direction, and one end connected to the damming portion side and the other An engaging / disengaging member having an engaging / disengaging portion that can be engaged / disengaged in an engaging / disengaging portion of the disengaging member, and the engaging / disengaging member is returned in a direction opposite to the direction of being urged against the engaging / disengaging member side. The engaging member is disengaged and the engaging member is disengaged with respect to the engaging member, and the operating member is movable with respect to the engaging member. The engagement / disengagement member rotates and the engagement / disengagement part engages with the engagement / disengagement part. Scum removing apparatus stopper portion dam by interlocking de receiving material is adapted to interlock. The scum removing device according to claim 1, wherein the engaging / disengaging material is a rod-shaped member, and the engaging / disengaging portion is a rack-shaped tooth. 3. The damming portion according to claim 1, wherein the damming portion is constituted by an upper portion of a dam provided separately at the front portion of the fixed trough, and is supported so as to be swingable up and down around the rotation shafts at both left and right ends in the longitudinal direction. Scum removal device. 4. The scum removing device according to claim 1, wherein the biasing means is a spring. 5. The scum removing device according to claim 1, wherein the operating member is operated together with a copying cam provided in the pond so as to respond to a flight moving in the settling pond.

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