JP2004113905A - Mono-rake dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mono-rake dust collector constituted so that a raking portion does not escape from a screen surface, an elevating/lowering guide is not required to be extended below the water surface and the dust in the water is never entwined around the elevating/lowering guide. <P>SOLUTION: A rake 3 is provided with right-and-left arms 32 for supporting the raking portion 31 and guide rollers 30 each of which is fit to the base end part of each of the arms 32. The central portions in the length of the arms 32 are supported respectively by right-and-left chains 60 of an elevating/lowering mechanism 4 to be rotated freely. The rollers 30 are supported respectively by the right-and-left elevating/lowering guides 7 to be slid freely. The rake 3 is formed so that the portion 31 is pressed to a screen 2 at the position lower than the positions of the arms 32 supported by the chains 60 and the rollers 30 are engaged with the guides 7 at the positions higher than the positions of the arms 32 supported by the chains 60. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention relates to a dust remover installed in a water channel such as a sewage treatment plant. The present invention relates to a mono-rake dust remover that is scraped up to the surface of water by a scraper and collected.
[0002]
[Prior art]
Conventional monorake dust removers include a circulation type using a chain mechanism as an elevating mechanism. In this type, the rake moves up and down as the endless chain circulates and runs.When the rake rises, the underwater dust caught on the screen is raised by the top of the rake. Raising to the surface of the water. In order to operate the rake stably, an elevating guide is laid in parallel with the chain, and the elevating guide guides the rake to perform the elevating operation.
[0003]
FIG. 8 shows a conventional monorake dust remover 100 of this type. In the figure, 101 is a pair of left and right chain mechanisms, 102 is a rake, 103 is a pair of right and left elevating guides, 104 is a chain driving device for driving the chain mechanism 101, 105 is a screen provided in a water channel, and 121 is a scraped up. This is a collection mechanism for collecting garbage. Note that W indicates the water surface of the waterway.
[0004]
The rake 102 has an upper portion 106 at the tip, and both ends of the upper portion 106 are supported by left and right arms 107. The center of the length of each arm 107 is rotatably supported by the chains 109 of the left and right chain mechanisms 101 via links 108, respectively. Guide rollers 110 are respectively attached to the base ends of the arms 107 of the rake 102, and the guide rollers 110 are slidably supported by the left and right elevating guides 103, respectively. In the figure, the arrow A indicates the traveling direction of the chain 109, the rake 102 moves up and down integrally with the traveling of the chain 109, and changes the traveling direction at the upper and lower ends.
[0005]
In the illustrated mono-rake dust remover, since the scraping portion 106 is pressed against the screen 105 by the weight of the rake 102, the scraping force is weak, and the underwater dust caught by the screen 105 cannot be reliably scraped up. There is a problem that leaving occurs. In addition, when the water flow in the water channel becomes faster during rainfall, there is also an inconvenience that the rake 102 rises above the screen 105 due to the vortex generated in the water channel and the dust removing function cannot be exhibited.
[0006]
As a solution to the above problems and disadvantages, a monorake dust remover 111 having the structure shown in FIG. 9 has been proposed. In the figure, 112 is a pair of left and right chain mechanisms, 113 is a rake, 114 is a pair of left and right elevating guides, and 115 is a chain driving device for driving the chain mechanism 112. In this mono rake dust remover 111, the attitude of the rake 113 is determined by the chain mechanism 112 and the elevating guide 114, and the upper portion 116 is forcibly pressed against the screen 105.
[0007]
The rake 113 has a raised portion 116 at the distal end supported by the distal ends of the left and right arms 117, and the proximal end of each arm 117 is integrally connected to the center of the length of the pipe-shaped arm supporting portion 118. . One end of each arm support 118 is rotatably supported by a chain 119 of the left and right chain mechanisms 112, and a guide roller 120 is attached to the other end of each arm support 118, respectively. Each guide roller 120 is slidably supported by the left and right elevating guides 114, respectively. In the figure, the arrow B indicates the traveling direction of the chain 119, and the rake 113 moves up and down integrally with the traveling of the chain 119, and changes the traveling direction at the upper and lower ends.
[0008]
[Problems to be solved by the invention]
However, in the mono-rake dust remover 111 shown in FIG. 9, when the rake 113 descends, the guide roller 120 of each arm support part 118 descends further below the lower end of the chain mechanism 112, so that the lower end of the elevating guide 114 is below the water surface. It is necessary to extend to a very deep position. For this reason, there is a problem that dust in the water is entangled with the lifting guide 114 and hinders the lifting operation of the rake 113.
In order to solve this problem, it is conceivable to install the chain mechanism 112 at a position sufficiently higher than the water surface W to shift the installation position of the elevating guide 114 upward. It is necessary to make the arm 117 of the 113 extremely long. In addition, since the height of the machine above the collection mechanism 121 becomes large, it is necessary to set the floor height of the building in which the monorake dust remover is installed large.
[0009]
In addition, in order to reliably collect the dust raked up by the rake, any of the mono-rake dust removers wipes dust from the upper portion of the rake at a dust collection position and discharges the dust to a lower collection mechanism 121 below. The wiper 122 is used to scrape off dust as the scraper 124 attached to the lower ends of the pair of swing levers 123 slides on the upper surface of the rake. There is a problem that a loud rubbing noise is generated during operation, causing noise pollution.
[0010]
The present invention has been made by paying attention to the above-described problem, and is a mono-rake dust remover capable of reliably scraping up dust while forcibly pressing a rake against a screen, and lowering a lower end of a lifting guide to below water level. It is an object of the present invention to provide a monorake dust remover that does not need to be extended and does not cause garbage in water to be entangled with a lifting guide.
Another object of the present invention is to provide a monorake dust remover which prevents generation of noise during a dust scraping operation by a wiper.
[0011]
[Means for Solving the Problems]
The monorake dust remover according to the present invention raises and lowers the rake by a lifting mechanism along a screen that blocks a water channel, and scrapes underwater dust caught by the screen to the surface of the water by a rising portion of a tip of the rake, and removes the scraped dust. It is designed to be collected by a collection device.
The lifting mechanism includes a pair of left and right chain mechanisms each having a chain stretched endlessly so as to be parallel to the screen, a pair of left and right lifting guides provided in parallel with the left and right chains, and a left and right chain. And a chain drive device for causing the vehicle to travel in the same direction. Also, the rake includes left and right arms supporting the upper portion of the rake, and guide rollers attached to the base end of each arm, and the center of the length of each arm is supported by the left and right chains to be free to tilt. Each guide roller is rotatably supported by the lifting guide.
The rake is formed such that the upper portion of the rake is forcibly pressed against the screen at a position below the position where the chain supports the arm, and the guide roller engages with the lifting guide at a position above the support position. .
[0012]
In the monolake dust remover according to the second aspect of the present invention, the recovery device includes a wiper having a scraper for scraping the scraped dust from the upper portion of the rake. The wiper is swingably supported in a state where the scraper faces a transition path of the rake so that the scraper is pushed by the rake and the scraper moves along the upper surface of the rake. A guide mechanism is provided between the rake and the rake to move the scraping portion in an approaching state without contacting the upper surface of the rake.
[0013]
[Action]
When the rake rises along the screen, the dust caught by the screen is swept up to the surface of the water by the upper part of the rake, and is collected by the collecting device. Since the rake is formed so that the upper part of the rake is pressed against the screen at a position below the position where the chain supports the arm, the rake force is strong, and it is possible to surely lift up the underwater dust captured by the screen. it can. In addition, even if the water flow in the water channel becomes faster during rainfall, the rake does not rise from the screen due to the vortex generated in the water channel, and the dust removal function can be exhibited.
In addition, since the rake is formed so that the guide roller engages with the elevating guide at a position above the position where the chain supports the arm, it is not necessary to extend the lower end of the elevating guide to below the water surface, and dust in the water is eliminated. There is no entanglement with the lifting guide. Moreover, since it is not necessary to set the chain mechanism sufficiently higher than the water surface, it is not necessary to set the rake arm particularly long, and it is not necessary to set the floor height of the building particularly high for machine installation. Absent.
[0014]
In the monorake dust remover according to claim 2, the scraping portion of the wiper scrapes dust from the upper portion of the rake, but the scraping portion is brought into contact with the upper surface of the rake by a guide mechanism provided between the wiper and the rake. Since the scraping operation is performed while shifting in a non-contact approaching state, no noise is generated during the scraping operation.
[0015]
【Example】
1 and 2 show the configuration of a monorake dust remover 1 according to one embodiment of the present invention. The illustrated monorake dust remover 1 is provided in the middle of a water channel 10 such as a sewage treatment plant. The screen 2 is installed so as to block the water channel 10, and the trash in the water captured by the screen 2 is lifted up to a position above the ground S by the rake 3. The scraped-up refuse is released to and collected by a collection mechanism 50 such as a trash conveyer or a refuse collection container. The arrow P in FIG. 1 indicates the direction of the water flow.
[0016]
The screen 2 is for capturing dust that flows through the water channel 10, and is formed by providing a vertically long bar material in a rectangular frame corresponding to the cross-sectional shape of the water channel 10. The lower end of the screen 2 is supported on the bottom surface of the water channel 10 and is fixed to the downstream side of the water channel 10 at an appropriate angle.
[0017]
The mono-rake dust remover 1 includes an integrated rake 3 for scraping underwater dust caught by the screen 2 to the surface of the water, an elevating mechanism 4 for moving the rake 3 up and down along the screen 2, and a scraped dust. And a recovery device 5 for recovering.
The lifting mechanism 4 is disposed upstream of the screen 2 of the water channel 10 and includes a pair of left and right chain mechanisms 6, a pair of left and right lifting guides 7, and a chain driving device 8.
[0018]
Each of the left and right chain mechanisms 6 has a chain 60 stretched endlessly between the wheels 61 and 62 so as to be parallel to the screen 2, and the lower wheel 62 is slightly higher than the water surface W of the water channel 10. It is installed to be located above. A chain guide 63 is provided along the straight running path of the chain 60 in each chain mechanism 6, and regulates the track on which the chain 60 runs.
[0019]
Each elevating guide 7 is for slidably supporting the left and right guide rollers 30 attached to the rake 3, and is laid in parallel with each chain 60 of the left and right chain mechanisms 6. Each lifting guide 7 is installed at a position higher than the wheel 62 on the lower side of the chain mechanism 6 so that the lower end portion does not sink below the water surface of the water channel 10.
[0020]
The chain driving device 8 drives each chain 60 in the same direction (indicated by an arrow C in the figure) by synchronously operating the left and right chain mechanisms 6, and uses a motor 81 as a drive source. The rotation of the motor 81 is transmitted to the upper wheel 61 of each chain mechanism 6 via the power transmission mechanism 82.
[0021]
The rake 3 includes a rake-shaped raked portion 31 for raking the dust caught by the screen 2, left and right arms 32, 32 supporting both ends of the raked portion 31, and base ends of the arms 32, 32. And guide rollers 30, 30 supported at both ends of a support member 33 provided in the section.
[0022]
Each arm 32 has a central portion bent at an obtuse angle, and a connecting member 34 is attached to a bent portion of each arm 32. By axially fixing the connecting members 34 and the connecting members 64 attached to the left and right chains 60, the center of the length of the arm 32 is rotatably supported by the chain 60. Hereinafter, the point at which the arm 32 is supported by the chain 60 is referred to as “fulcrum Q”.
[0023]
Each guide roller 30 is slidably supported by each of the left and right elevating guides 7. When the left and right chains 60 run in the direction of arrow C, each guide roller 30 slides on the left and right elevating guides 7. The rake 3 moves up and down integrally with the traveling of the chain 60. The rake 3 changes the traveling direction at the positions of the upper and lower wheels 61 and 62.
FIG. 3 shows a state in which the rake 3 changes its traveling direction at the position of the lower wheel 62. After this change of direction, the scraping portion 31 of the rake 3 can perform a scraping operation. 31 is set and held in a state pressed against the screen.
[0024]
The rake 3 has a shape such that when scraped, the scraped portion 31 is pressed against the screen 2 at a position below the fulcrum Q and the guide roller 30 is engaged with the lifting guide 7 at a position above the fulcrum Q. And dimensions are set.
Since each of the chain mechanisms 6 is installed such that the lower wheel 62 is located slightly above the water surface W of the water channel 10, the length of the tip side of the arm 32, that is, the length from the fulcrum Q to the scraping portion 31. Is almost equal to the water depth. The length of the base end side of the arm 32, that is, the length from the fulcrum Q of the arm 32 to the guide roller 30 can be freely set.
[0025]
At the upper end position of the chain mechanism 6, a wiper 51 for scraping the dust raked up by the rake 3 from the scraper 31 is installed. The wiper 51 constitutes the collecting device 5 together with the collecting mechanism 50.
The wiper 51 is provided at a dust collection position above the collection mechanism 50. As shown in FIGS. 4 to 7, the wiper 51 has a shaft 52 horizontally provided in the width direction of the rake 3 of the rake 3, and a shaft 52. And a scraper 54 attached to the shaft 52. The scraping portion 54 is positioned in a state facing the transition path of the rake 3 so that the scraping portion 54 is pushed by the rake 3 and moves along the scraping surface 31a of the scraping portion 31.
[0026]
The wiper 51 is supported by left and right frames 11 via left and right support mechanisms 55, and a guide mechanism 9 is provided between the wiper 51 and the rake 3.
The support mechanism 55 includes a pair of swing levers 56, 56 respectively arranged outside the left and right frames 11, a pivot pin 58 attached to the outside of the frame 11 by a bracket 57, and each swing lever 56. , 56 and a balance weight 59 fixed to the upper end 56a of each. Each of the swing levers 56 is supported by a pivot pin 58 so as to freely swing.
[0027]
Both ends 52a, 52a of the shaft 52 penetrate the left and right frames 11 and protrude outward, respectively, and each protruding end communicates with a lower end 56b of each swing lever 56. In the figure, reference numeral 12 denotes an arc-shaped through hole formed in the left and right frames 11, and the shaft 52 can be displaced when the swing levers 56 swing.
[0028]
The scraping portion 54 is a horizontally-long rectangular blade having a width slightly smaller than the scraped portion 31 of the rake 3. When the rake 3 rises to the dust collection position, it receives a pressing force from the rake 3. The rake 3 moves along the upper surface 31a of the rake 3 while swinging and displacing in the direction of the arrow X in FIG. 5, and scrapes dust from the upper surface 31a.
[0029]
Each of the swing levers 56 has an upper end bent downward from the pivot point, and the weight of the balance weight 59 provided at the bent end and the weight of the wiper 51 at the lower end of the swing lever 56 are reduced. Are balanced with the position of the pivot pin 58 as a fulcrum. The scraping section 54 performs a scraping operation while being pushed by the rake 3 as shown by a chain line in FIG. 5, and when the pushing force is released by passing the rake 3 after the scraping is completed, the swing lever 56 swings. To return to the solid line position in FIG. At this return position, a shock absorbing damper 13 is provided, and the swing lever 56 hits the damper 13 to stop swinging.
[0030]
The guide mechanism 9 includes rollers 91, 91 rotatably supported on both ends of a shaft 52 of the wiper 51, respectively, and roller guides 92, 92 mounted on both ends of the scraped portion 31 of the rake 3. .
Each roller guide 92 is formed of, for example, a metal plate, has a guide surface portion 92 a facing the roller 91, and is fixed to each side plate portion 31 b of the upper portion 31 of the rake 3 with a screw 93.
[0031]
As shown in FIG. 7, the guide surface portion 92a is formed of a curved surface inclined along the scraping surface 31a of the rake 3. When the roller 91 rolls on the guide surface portion 92a, the scraping portion 54 The leading edge 54a is set in an approaching state in which the leading edge 54a does not contact the scraping surface 31a, that is, a state in which a minute gap G is interposed between the leading edge 54a of the scraping unit 54 and the scraping surface 31a. A long hole 94 through which a screw 93 is inserted is formed in the side plate portion 31b of the upper portion 31 of the rake 3, so that the minute interval G can be adjusted. The guide mechanism 9 is not limited to the one configured by the roller 91 and the roller guide 92.
[0032]
When the left and right chain mechanisms 6 are driven by the chain driving device 8 in the above-described mono rake dust remover, the rake 3 is guided by the lifting guide 7 and moves down integrally with the traveling of the chain 60. When the rake 3 reaches the lower end of the elevating guide 10, as shown in FIG. 3, the traveling direction is changed by making a half turn around the wheel 62, and the scraped portion 31 is pressed against the screen 2.
[0033]
Next, the rake 3 is guided by the lift guide 7 and moves up integrally with the traveling of the chain 60. When ascending, the rake 3 of the rake 3 scrapes up the dust caught on the screen 2. When the rake 3 reaches the dust collection position, the scraper 54 of the wiper 51 is pushed by the rake 3 and moves along the upper surface 31 a of the rake 3, and scrapes up the dust from the upper portion 31. The scraped dust falls naturally and is collected by a collecting mechanism 50 located below.
[0034]
When the dust is scraped, the roller 91 of the wiper 51 rolls on the guide surface portion 92a of the roller guide 92 of the rake 3, and the leading edge 54a of the scraping portion 54 is kept close to the scrape upper surface 31a of the rake 3. It is. For this reason, there is no abrasion of the scraping portion 54, and since the scraping portion 54 is kept in non-contact with the scraping surface 31a of the rake 3, no rubbing noise is generated.
[0035]
When the scraper 54 scrapes the dust on the upper portion 31 of the rake 3 and the rake 3 passes through the dust collection position, the wiper 51 returns to the return position indicated by the solid line in FIG.
Thereafter, when the rake 3 reaches the rising end, the traveling direction is changed by making a half turn around the wheel 61, and the rake 3 starts to descend integrally with the movement of the chain 60 along the lifting guide 7.
[0036]
【The invention's effect】
According to the present invention, since the rake of the rake is forcibly positioned on the screen surface, the rake does not escape from the screen surface. There is no need to extend the lower end of the guide below the water surface, and dust in the water does not become entangled with the lifting guide.
[0037]
According to the second aspect of the present invention, a guide mechanism is provided between the wiper and the rake to shift the scraping portion of the wiper in an approaching state without contacting the upper surface of the rake. It does not occur and there is no possibility of causing noise pollution.
[Brief description of the drawings]
FIG. 1 is a side view of a monorake dust remover according to an embodiment of the present invention.
FIG. 2 is a front view of the monorake dust remover.
FIG. 3 is an enlarged side view showing the configuration and operation of the rake.
FIG. 4 is a front view of the wiper.
FIG. 5 is a side view showing a rake and a wiper at a dust collection position.
FIG. 6 is a perspective view showing a wiper and a guide mechanism.
FIG. 7 is an explanatory view showing the operation of the guide mechanism.
FIG. 8 is a side view showing a configuration of a conventional monorake dust remover.
FIG. 9 is a side view showing the configuration of another conventional monorake dust remover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mono-rake dust remover 2 Screen 3 Rake 4 Elevating mechanism 5 Recovery device 6 Chain mechanism 7 Elevating guide 8 Chain driving device 9 Guide mechanism 30 Guide roller 31 Raised part 32 Arm 51 Wiper 54 Wiping part 60 Chain

Claims (2)

The rake is raised and lowered by a lifting mechanism along the screen blocking the water channel, and the underwater dust captured by the screen is scraped up to the surface of the water by the rising edge of the rake, and the scraped dust is collected by the collection device. In monorake dust remover,
The lifting mechanism includes a pair of left and right chain mechanisms each having a chain stretched endlessly so as to be parallel to the screen, a pair of left and right lifting guides provided in parallel with the left and right chains, and a left and right chain. And a chain drive device for running the same in the same direction,
The rake includes left and right arms that support the upper part of the rake, and guide rollers attached to the base end of each arm, and the center of the length of each arm is supported by the left and right chains to be freely rotatable, Each guide roller is slidably supported by the lifting guide,
The rake is formed such that the upper portion of the rake is forcibly pressed against a screen at a position below a position where the chain supports the arm, and a guide roller is engaged with a lifting guide at a position above the support position. Mono rake dust remover. The recovery device includes a wiper having a scraping portion for scraping the scraped dust from the upper portion of the rake, and the wiper is pushed by the rake, and the scraper is moved along the upper surface of the rake. In a state in which the scraping portion faces the transition path of the rake so as to move, the swinging portion is supported swingably, and an approaching state is provided between the wiper and the rake so that the scraping portion does not contact the upper surface of the rake. 2. The mono-rake dust remover according to claim 1, further comprising a guide mechanism for shifting by means of:

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