KR20200043899A - Chain Flight type Sludge Collector - Google Patents

Abstract

Disclosed is a chain flight type sludge collector to remarkably increase scum removal efficiency. According to one embodiment of the present invention, the chain flight type sludge collector is disposed in a settling tank to remove sludge in a bottom part and remove scum in a water surface part. According to the present invention, the chain flight type sludge collector comprises: a driving unit disposed in the settling tank and including a driving sprocket; a main body chain connected to the driving sprocket; an idle unit disposed in the settling tank and including a plurality of driven sprockets spaced apart from the driving sprocket of the driving unit to guide the main body chain to allow the main body chain to be wound in a caterpillar track shape and be circulated and rotated in the settling tank; and a plurality of flights installed in the main body chain at predetermined intervals. The driving sprocket is disposed on the upper part of the settling tank adjacent to a skimmer discharging the scum therefrom and includes an inner chain guide disposed in the main body chain of the caterpillar shape to guide movement of the main body chain, which passes through the driving sprocket, inside.

Description

Chain Flight Type Sludge Collector

The present invention relates to a chain flight type sludge collector, and more particularly, to a high-tensile non-metal chain flight type sludge collector with less damage and improved efficiency.

A sludge collector is installed in a water purification plant, a sewage treatment plant, and a wastewater treatment plant to scrape the sludge settled at the bottom of the sedimentation tank and discharge it to the outside, and push the upper scum to discharge it to the outside.

A typical chain-flight type sludge collector includes a motor provided on the top of a sedimentation tank to provide power, a drive sprocket receiving power from a motor, and a plurality of idle sprockets driven, and a caterpillar-shaped chain connecting the sprockets, The sludge at the bottom of the sedimentation tank installed in the chain includes a scraper that scrapes off the upper scum, and a skimmer that discharges the scum pushed by the flight.

Figure 1 shows a part of a conventional chain-flight type sludge collector, as shown, the driving shaft 1, the chain (2) pulling force (F1) and pushing force (F2) acts at the same time. In the initial operation, the chain 2 circulates tightly while the two forces act uniformly, but as time passes, the chain tension is released due to wear of the sprocket and elongation of the chain, and the upper part passing through the driving sprocket 3 Deflection occurs in the moving section. The deflection of the chain 2 leads to an imbalance in the left and right movement of the flight 4, which in turn can cause the chain 2 to deviate from the traveling track as the flight twists in a meandering direction. In addition, since the flight 4 is also inclined forward, the scum removal efficiency may be deteriorated because the scum is not properly pushed out. Unexplained reference numeral 5 is a return rail.

Korean Patent Publication No. 10-2007-0008746 (2007.01.18.)

According to an embodiment of the present invention is to provide a chain flight type sludge collector with greatly improved efficiency.

According to an aspect of the present invention, a chain flight type sludge collector provided in a sedimentation tank to remove sludge from the bottom and remove scum from the top of the water surface, comprising: a drive unit provided in the sedimentation tank and including a drive sprocket; A chain for the body connected to the drive sprocket; An idler part provided with a plurality of driven sprockets which are provided spaced apart from the drive sprockets of the driving part in the sedimentation tank and guide the main body chain to be rotated in an infinite orbital shape to rotate and rotate the sedimentation tank; And a plurality of flights installed at a predetermined interval on the main chain, and the drive sprocket is provided on the top of the sedimentation tank adjacent to the skimmer through which the scum is discharged, and to guide the movement of the main chain on the chain passing through the drive sprocket from the inside. A chain-flight-type sludge collector including an inner chain guide provided on the inside of a chain for a caterpillar body may be provided.

In addition, the drive sprocket can switch the movement direction of the main body chain from horizontal to vertical.

In addition, the drive sprocket may allow the main body chain to be drawn in the horizontal direction and then drawn out in the gravity direction.

In addition, a return rail is provided on the upper portion of the sedimentation tank, and the drive sprocket can switch the direction of movement of the body chain from the top to the bottom by pulling the body chain passing through the return rail.

In addition, one of the plurality of driven sprockets includes an upperitance sprocket provided on the top of the sedimentation tank, and the pitch of the main body chain applied to the drive sprocket may be greater than the pitch of the main body chain applied to the upperitance sprocket.

In addition, it may include an outer chain guide that guides the movement of the body chain passing through the drive sprocket from the outside.

In addition, a skimmer portion for driving the skimmer is further included, and the skimmer portion may be driven by the driving sprocket.

In addition, the skimmer portion includes a cam bar provided on the drive shaft of the driving unit and a skimmer bar provided on the skimmer, and the cam bar and the skimmer bar may be cam-coupled to rotate in different directions.

In addition, one of the skimmer bars is provided, and at least one of the cam bars is provided to selectively contact the skimmer bar.

In addition, the skimmer portion may further include an elastic member elastically supporting the return of the skimmer.

The chain flight type sludge collector according to an embodiment of the present invention is operated by being directly connected to a conventional tail sprocket adjacent to a skimmer, thereby preventing meandering and orbital departure due to sagging of the body chain in the return rail section of the upper part, as well as of the scum The removal efficiency can also be significantly increased.

In addition, the chain flight type sludge collector according to an embodiment of the present invention is used for the main body by converting the direction of movement of the main body chain in the drive sprocket provided adjacent to the skimmer from the top of the sedimentation tank to the vertical direction where gravity acts in the horizontal direction. It is possible to effectively reduce the load on the drive sprocket by using gravity and self-weight acting on the chain. In addition, as a result, the distance between the drive shaft and the skimmer is significantly shorter than that of the prior art, so that the dead area where the scum is accumulated is reduced, so that it is possible to prevent scum deposits and improve the treatment quality.

In addition, the chain flight type sludge collector according to an embodiment of the present invention can reduce the equipment cost by connecting the skimmer to the driving shaft of the driving unit, so that even if there is no separate driving device, the scum can be removed.

In addition, the chain-flight type sludge collector according to an embodiment of the present invention connects a skimmer and a drive shaft to a cam, and the number of cams can be easily adjusted by the operator to easily increase or decrease the operation of the skimmer.

1 is a view showing a conventional chain flight type sludge collector.
Figure 2 is a perspective view schematically showing a chain flight type sludge collector according to an embodiment of the present invention.
Figure 3 is a side view showing a chain flight type sludge collector according to an embodiment of the present invention.
4 is a partially enlarged view of a flight that moves a rail of a chain-flight type sludge collector according to an embodiment of the present invention.
5 to 7 is a view for explaining the scum removal operation according to the amount of sludge of the chain-flight type sludge collector according to an embodiment of the present invention.
8 is an enlarged view illustrating a chain guide part of a chain-flight-type sludge collector according to an embodiment of the present invention.
9 is an enlarged view of a skimmer portion of a chain-flight type sludge collector according to an embodiment of the present invention.
10 is a perspective view partially showing a skimmer portion of a chain flight type sludge collector according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art to which the present invention pertains. The present invention is not limited to the embodiments described below and may be embodied in other forms. In order to clearly describe the present invention, parts not related to the description are omitted in the drawings, and in the drawings, the width, length, and thickness of components may be exaggerated for convenience. Throughout the specification, the same reference numbers indicate the same components.

2 is a partially exploded perspective view showing a chain flight type sludge collector according to an embodiment of the present invention, FIG. 3 is a side view of FIG. 2, and FIG. 4 is a partially enlarged perspective view of FIG. 2.

Referring to the drawings, the chain-flight-type sludge collector according to the present embodiment is a driving unit 10 and an idler unit 15, and a driving unit 10 and an idler unit 15 spaced apart from each other in a sedimentation tank 6 through which raw water is introduced. ) Is wound in a caterpillar form and is provided in a pair of left and right body chains (20), and body (20) is installed at predetermined intervals to collect sludge and scum (30) and flight (30) It includes a rail 40 for guiding the movement of.

The sludge collector uses the flight 30 provided in the main body chain 20 rotating in one direction (clockwise in the drawing) in the sedimentation tank 6, and the sludge accumulated on the bottom of the sedimentation tank is provided with an exhaust space 7 provided on one side of the bottom ), The scum floating on the water surface moves to the flight 30 to the skimmer 8 located on the opposite side of the discharge space 7 to discharge foreign substances and contaminants contained in the raw water to the outside.

The drive unit 10, as shown, the drive motor 11, the drive chain 12 is connected to one end of the rotary shaft of the drive motor 11, the chain sprocket 13a is connected to the other end of the drive chain 12 And, it is provided side by side on the coaxial with the chain sprocket (13a), and includes a drive sprocket (13) to which the main chain (20) is connected.

The idle part 15 includes a plurality of driven sprockets 16, 17, 18 provided separately from the drive sprocket 13 of the drive part 10 in the sedimentation tank 6, and for the main body together with the drive sprocket 13 The chain 20 is connected in a closed loop form so that the flight 30 can circulate and rotate inside the sedimentation tank 6.

The idle part 15 is provided adjacent to the skimmer 8 side at the bottom of the sedimentation tank 6, and the underturn sprocket 16 for changing the main body chain 20 from the rear to the front and at the bottom of the sedimentation tank 6 Provided remotely from the side of the skimmer (8), an underhead sprocket (17) for switching the main body chain (20) from bottom to top, and a main body chain (20) provided remotely from the side of the skimmer (8) at the top of the sedimentation tank (6) ) Up-return sprocket (18) for switching from front to rear. The bottom rail 42 is positioned between the under-return sprocket 16 and the under-head sprocket 17, and the return rail 44 is located between the up-return sprocket 18 and the drive sprocket 13.

The drive sprocket 13 of the drive unit 10 and the driven sprockets 16, 17, 18 of the idle unit 15 are provided with a pair of left and right pairs to support the main body chain 20 provided in a pair of left and right horizontally at both ends. It is provided with, a pair of left and right sprockets (13,16,17,18) are connected by a single shaft.

The main chain 20 is provided by connecting a plurality of elliptical chain links 21 as shown in enlarged view in FIG. 4. The chain link 21 is provided with chain shafts 23 on both inner edges of the ellipse, and a plurality of chain links 21 neighboring around the chain shaft 23 are arranged in two rows, inside and outside, outside and inside. And alternately arranged in series. Although not shown in detail, a bush may be provided between the chain link 21 and the chain shaft 23 to prevent left and right pushing and relative rotation, and the chain link 21 may be prevented from falling off at the end of the chain shaft 23. A link pin for doing so may be provided.

In addition, the flight 30 is provided in the form of a bar, and both sides are supported by a pair of left and right main body chains 20, and a plurality of main body chains 20 are installed at regular intervals and rotate, while sludge is disposed under the sedimentation tank 6 Collect the scum from the top and push it in one direction.

The flight 30 includes upper and lower supports 31 and 32 forming upper and lower surfaces, and a column 33 forming a side wall between the supports. The flight 30 is a structure for increasing the strength of the form up to 10m in length, a supporter (not shown) may be provided as another reinforcing member therein. In addition, the flight 30 is installed on the main chain 20 using the attachment 35 and slides on the rail 40 provided in the sedimentation tank 6. Although not illustrated, the flight 30 that slides in contact with the rail 40 may further include a roller (not shown) to make rolling contact with the rail 40 to reduce friction during movement.

The rail 40 is provided long along the movement direction of the flight 30, as shown in FIGS. 2 to 4, the bottom rail 42 provided on the bottom of the sedimentation tank 6 and the upper side of the sedimentation tank 6 It includes a return rail 44 provided in the.

The bottom rail 42 is provided on the lower side of the main body chain 20, specifically in the direct direction of the main body chain 20, and the return rail 44 is provided on the outside of the side surface of the main body chain 20. This is when the flight 30 is viewed from the front in the longitudinal direction, the return rail 44 is located outside the bottom rail 42 (or body-shaped chain 20), and the body-shaped chain 20 and the flight 30 It is prepared on the same side. In addition, the return rail 44 may be supported by a fixture (see 46 in FIG. 2) provided at predetermined intervals on the side wall of the sedimentation tank 6.

On the other hand, the chain flight type sludge collector according to the present embodiment is a driven sprocket in which the driving unit 10 is located at the rear end of the moving direction of the main body chain of the conventional return rail 44 closest to the skimmer 8 (drive in this embodiment) Sprocket (13) is located on the upper portion of the drive motor (11) and the drive sprocket (13) are connected through the drive chain (12). Therefore, since the chain 20 for the body passing through the return rail 44 is always pulled tightly by the tensile force of the drive sprocket 13, the sagging of the chain 20 for the body does not occur even as time passes. Does not.

In addition, the chain flight type sludge collector of the present embodiment in which the driving unit 10 is disposed on the sprocket 13 on the top of the sedimentation tank adjacent to the skimmer 8 is A1, A2 of FIG. 3 when compared with the conventional sludge collector shown in FIG. , A3 The driving sprocket 13 and the main chain 20 have more contact surfaces because the sum of the cabinets of the three sections decreases from 320 to 270 degrees. For example, assuming that the main body chain 20 having a regular size of 1 pitch is used, the number of pitches of the main body chain 20 applied to the upperturn sprocket 18 is 3.5, both of this embodiment and the prior art. The pitch of the main chain 20 applied to the sprocket 13 is 4.5 according to the present embodiment according to the inclination of the chain, and the difference is conventionally 1.5. Therefore, as the pitch increases, the chain for the main body 20 takes more to the drive sprocket 13, so the possibility of chain detachment is relatively low.

In addition, the chain-flight type sludge collector according to the present embodiment substantially vertically draws out the direction of the main chain 20 that is drawn in the horizontal direction because the drive sprocket 13 contacts the main chain 20 and the 4.5 pitch. Direction. The conversion of the main body chain 20 to the natural gravity direction can reduce the tensile load applied to the main body chain 20 because gravity (including self-weight) acting on the main body chain 20 can be used. have. When the drive sprocket is positioned on the upperturn sprocket 18 as in the prior art, in addition to the force for pulling the flight (F1 in FIG. 1), the force for pushing the flight (F2 in FIG. 1) and the static frictional force of the flight are also applied to the drive unit 10 Therefore, the amount of wear of the drive sprocket 13 and the main chain 20 is relatively large compared to the embodiment of the present invention, and thus the lifespan of the parts is inevitably shortened.

5 to 7 is a view for explaining the scum removal efficiency according to the amount of sludge in the chain-flight type sludge collector according to the present embodiment. FIG. 5 shows when the sludge amount is low load, FIG. 6 shows when the sludge amount is medium load, and FIG. 7 shows when the sludge amount is high load. Prior to the description, the amount of scum is generally proportional to the amount of lower sludge.

Referring to the drawings, as shown in Figure 5, the sludge collector at a low load when the amount of sludge is low is low, so the main body chain 20 moves in sliding contact with the return rail 44 because the load required for operation is small. , Landing (rising section; L1) at the end side of the return rail 44 adjacent to the drive sprocket 13.

Therefore, as shown in enlarged view in FIG. 5, the flight 30 moves while maintaining an upright state, and even if the amount of the scum S floating on the water surface is small, the upper part of the flight 30 in the upright state is caught in the skimmer 8 ) Side can be stably induced.

As shown in FIG. 6, the main body chain 20 moving along the return rail 44 is the return rail ( Landing (L2) is made in the middle of 44).

In addition, as shown in FIG. 7, the main body chain 20 moving along the return rail 44 is stretched while the sludge collector at a high load with a lot of sludge accumulated is very large because the load required for operation is very large. Landing (L3) is made from the beginning of the return rail (44).

Therefore, as shown in FIGS. 5 to 7, the main body chain 20 gradually increases in height according to the load when moving along the return rail 44, which increases in proportion to the amount of scum that increases in proportion to the amount of sludge. Since the height of the flight 30 of the molten chain 20 can also be increased, the removal efficiency can be greatly increased by inducing the scum S floating on the water surface to the skimmer side without missing. If the height of the flight 30 is low when the amount of scum is large, for example, if the main body chain 20 always moves along the return rail 44 as in the prior art, the removal efficiency can be reduced because the scum cannot be pushed all the way to the skimmer side. There is only.

In addition, although not described in detail, as described above, the main body chain 20 moving toward the drive sprocket 13 adjacent to the skimmer 8 has a different landing angle depending on the amount of sludge, so it is used as a sensor (not shown). When detected, the amount of sludge in the sedimentation tank that cannot be visually judged can be easily grasped.

FIG. 8 is an enlarged view of a part of the chain-flight type sludge collector according to the present embodiment. Referring to the drawing, a chain guide guiding the downward direction of the chain 20 for the main body 20 to the exit side of the drive sprocket 13 A portion 50 may be provided.

The chain guide part 50 may include an inner chain guide 52 and an outer chain guide 54. The inner chain guide 52 is provided inside the main body chain 20 in the form of a closed loop when viewed from the side, and is provided in a bar shape elongated in the vertical direction to the inner wall of the sedimentation tank 6.

The outer chain guide 54 is provided on the outside of the main body chain 20 in a closed loop shape when viewed from the side, and can be provided in a convex arc shape toward the main body chain 20 on the inner wall of the sedimentation tank 6. have.

The inner chain guide 52 and the outer chain guide 54, when the main chain 20 moves abnormally, the inner chain 20 contacts the chain link 21 and the flight 30 while the inner and outer chains are in contact. It guides you to stably move in the direction of gravity.

9 is an enlarged view of the skimmer portion of the chain-flight type sludge collector according to the present embodiment, and FIG. 10 is a partial perspective view showing the skimmer portion.

Referring to the drawings, the skimmer portion 60 may include a cam bar 61 provided on the drive shaft 14 of the driving unit 10 and a skimmer bar 63 provided on the skimmer 8.

At least one cam bar 61 may be provided on the driving shaft 14. For example, when only one cam bar 61 is provided on the driving shaft 14, the skimmer 8 operates once at a 360 degree rotation, and when two are provided, it is provided at an interval of 180 degrees to operate twice at one rotation. Yes (see Figure 10). Likewise, when three cam bars 61 are provided on the drive shaft 14, they can be provided at 120 degree intervals and operated three times in one rotation. A cam roller 62 may be provided at an end of the cam bar 61. In addition, the cam bars 61 may be provided at both ends of the drive shaft 14, respectively. The conventional skimmer 8 has a structure provided on one side of the sedimentation tank because the driving part for operation is provided separately from the chain driving part, but the cambar 61 of this embodiment is easily twisted because it can be easily installed on both sides of the driving shaft 14. Damage to the skimmer 8 due to can be effectively prevented.

The skimmer bar 63 is provided to rotate like the skimmer 8, and is protruded from the skimmer 8 to selectively contact the cam bar 61. The cam bar 61 and the skimmer bar 63 are provided to rotate in different directions. For example, as the cam bar 61 rotates in the clockwise direction as shown in the rotational direction of the main body chain 20, the skimmer bar 63 is rotated counterclockwise when in contact with the cam bar 61 It is provided at the rear end in the rotational direction of (61). Therefore, the scum moved by the flight 30 from left to right in the drawing can be discharged to the outside through the scum inlet 8a of the skimmer 8 rotating from right to left. A skimmer roller 64 is provided at an end of the skimmer bar 63 to make rolling contact with the cam roller 62 of the cam bar 61.

Meanwhile, the skimmer portion 60 may further include an elastic member 65 provided in the sedimentation tank 6 to elastically support the original return of the skimmer 8. The elastic member 65 may include a spring on which one end is supported on the fixed end 66 provided on the sedimentation tank 6 and the other end is supported on the link bar 67 protruding from the skimmer 8. The link bar 67 has an elastic restoring force in the clockwise direction.

Then, the operation of the chain flight type sludge collector according to the present embodiment having the above-described configuration will be described.

When power is applied, the drive sprocket 13 connected to the drive motor 11 and the drive chain 12 and a plurality of driven sprockets 16, 17, 18 rotate, and the main body chain 20 installed in an endless track By rotating and rotating the main chain 20, the flight 30 removes sludge and scum while circulating the bottom and water surface of the sedimentation tank 6.

The chain flight type sludge collector according to the present embodiment is an upperitone sprocket because the chain for the main body 20 passes through the return rail 44 while being pulled by the drive sprocket 13 at the top of the settling tank closest to the skimmer 8. 18) and sagging of the chain occurring in the section A (see FIG. 3) between the drive sprocket 13 can be effectively prevented.

In addition, the chain-flight type sludge collector according to the present embodiment moves the direction of movement of the main body chain in the drive sprocket 13 in which the main body chain 20 is provided adjacent to the skimmer 8, from the upper part of the sedimentation tank 6, specifically By shifting from the horizontal direction to the vertical direction, it is possible to effectively reduce the load on the driving sprocket by using gravity and self-weight acting on the main chain 20. In addition, because of this, the distance between the drive shaft 14 and the skimmer 8 is shorter than in the prior art, so that the dead area where the scum S is accumulated is reduced, and thus it is possible to improve the scum deposition prevention and treatment quality.

In addition, the chain flight type sludge collector according to an embodiment of the present invention is connected to the cam using the drive shaft 14 of the drive unit 10 and the skimmer unit 60 of the skimmer 8, so that the main body is only the drive unit 10 Since the molten chain 20 and the skimmer 8 can be operated simultaneously, it is possible to reduce the equipment cost.

6 .. Sedimentation tank 10 ..
11..Drive motor 12..Drive chain
13..Drive Sprocket 15.Children
16 .. Under return sprocket 17 .. Under head sprocket
18..Upper Return Sprocket 20..Chain Chain
30.Flight 40..Rail
42..Bottom rail 44..Return rail
50..Chain guide part 52..Inner chain guide
54..Outer chain guide 60..Skimmer part
61..Cam 63.Skimmer Bar
65..Elastic member 67.Link bar

Claims (10)

A chain flight type sludge collector provided in a sedimentation tank to remove sludge from the bottom and remove scum from the top of the water surface,
A driving unit provided in the sedimentation tank and including a driving sprocket;
A body chain connected to the drive sprocket;
An idler part spaced apart from a drive sprocket of the driving part in the sedimentation tank and including a plurality of driven sprockets for guiding the main body chain to be rotated in an infinite orbital shape to rotate and rotate the sedimentation tank; And
Includes; a plurality of flights that are installed at a predetermined interval on the main body chain;
The drive sprocket is provided on the top of the sedimentation tank adjacent to the skimmer through which the scum is discharged,
Chain flight type sludge collector including an inner chain guide provided inside the body chain of the caterpillar shape to guide the movement of the body chain passing through the drive sprocket from the inside. According to claim 1,
The drive sprocket is a chain-flight type sludge collector that converts a direction of movement of the main body chain from horizontal to vertical. According to claim 1,
The drive sprocket is a chain flight type sludge collector that allows the main body chain to be drawn in a horizontal direction and then drawn out in a gravity direction. According to claim 1,
A return rail is provided on the top of the sedimentation tank,
The drive sprocket is a chain-flight-type sludge collector that pulls the body chain that has passed through the return rail to switch the direction of movement of the body chain from top to bottom. According to claim 1,
One of the plurality of driven sprockets includes an upperturn sprocket provided on the top of the sedimentation tank,
The chain flight type sludge collector has more pitch than the pitch of the main chain for the drive sprocket. The method according to any one of claims 1 to 5,
A chain flight type sludge collector comprising an outer chain guide that guides the movement of the main body chain passing through the drive sprocket from the outside. The method according to any one of claims 1 to 5,
Further comprising a skimmer for driving the skimmer,
The skimmer portion is a chain flight type sludge collector driven by the drive sprocket. The method of claim 7,
The skimmer portion includes a cam bar provided on the drive shaft of the driving unit, and a skimmer bar provided on the skimmer,
The cam bar and the skimmer bar are chain-flight type sludge collectors that are cam-coupled to rotate in different directions. The method of claim 8,
The skimmer bar is provided with one,
The cam bar is provided with at least one or more chain flight type sludge collector to selectively contact the skimmer bar. The method of claim 7,
The skimmer portion is a chain flight type sludge collector further comprising an elastic member elastically supporting the return of the skimmer.

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