JPH072011Y2 - Concentrator - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is intended to perform concentration as a pretreatment for a squeezing device such as a belt press filter for separating solid liquids of various wastewater sludges (hereinafter referred to as mud substances). The present invention relates to a concentrating device.

[Prior Art] As a device for separating solid-liquid mud substances, a squeezing method in which mud substances are squeezed from a cloth and simultaneously pressed by a dewatering roller has been generally used.

[Problems to be solved by the invention] However, in the above-mentioned conventional method, when the fluidity of the mud-like substance is high, it is difficult for the mud-like substance to enter if it is squeezed as it is, or the width of the cloth Since it leaks (protrudes) in the direction and cannot be separated, a concentration operation is performed to gradually increase the solid concentration based on gravity dehydration. If the fluidity decreases to the required state due to the increase in concentration, then dehydration is performed. I am trying to lead to Laura.

Therefore, in the above-mentioned conventional method, since the concentration operation is dependent on gravity dehydration, the line of the concentration device becomes long, so that there is a problem that the entire equipment for solid-liquid separation becomes extremely large in size. There was little increase in concentration, and little decrease in fluidity.

The present invention has been made by paying attention to the above-mentioned conventional problems, and enables efficient concentration of mud substances with a small device, thereby reducing the size and simplification of the entire equipment for separating solid-liquid. The purpose is to plan.

[Means for Solving the Problems] The present invention provides a cloth that is movable in the horizontal direction, a lower side that opens close to the cloth, and a mud-like material on the upper side in the moving direction of the cloth. The main body of the concentrator having a supply port and a cake outlet on the downstream side plate, and a plurality of parallel eccentric drums having axes parallel to the moving direction of the cloth are rotatably provided on the drum frame, and each eccentric A drum unit supported in the concentrator main body such that the distance between the line connecting the shaft centers of the drums and the cloth becomes wider on the upstream side in the moving direction of the cloth and becomes narrower toward the downstream side, and a drum that rotationally drives the eccentric drums. The present invention relates to a concentrating device including a driving device.

[Function] The mud-like substance supplied into the main body of the concentrator is gradually guided into a narrow space on the downstream side by the movement of the cloth and the rotation of the eccentric drum, and is subjected to the action of the pressing force of the eccentric drum. It is effectively concentrated into a cake, which is discharged from the cake outlet.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention, in which a cloth 2 which is supported by a supporting roller 1 and moves in a horizontal direction A,
The lower surface has a required length along the moving direction A of the cloth 2 and has an opening 7 ', and a supply port 4 for supplying the mud-like substance 3 to the upper side on the upstream side (right side in FIG. 1) of the moving direction of the cloth 2. And the main body 7 of the concentrator having the cake outlet 6 for discharging the concentrated cake 5 between the downstream side plate 7a and the cloth 2 has a slight gap between the cloth 2 and the fixing member 8 A seal blade 9 is provided on the outer periphery of the left and right side plates 7b, 7c and the upstream side plate 7d, which has an opening provided on the lower surface of the concentrator body 7 so as to perform a seal with the cloth 2. Has been.

A drum unit 10 is arranged inside the concentrator body 7 between the downstream side plate 7a and the supply port 4.

The drum unit 10 is a box-shaped drum frame with an open bottom.
11, and the drum frame side plates 12, 13 are close to the left and right side plates 7b, 7c of the concentrator body 7, and the drum frame side plates 12, 13 are provided.
The downstream end of 13 is rotatably supported by the left and right side plates 7b and 7c by a fulcrum pin 14, and the upstream end of the drum frame 11 is a fixing fitting provided in the supply port 4, for example, an adjusting bolt 15 and a double nut. The drum frame 11 is supported so as to be able to move up and down by a tilt adjusting device 17 composed of 16, so that the drum frame 11 can be rotated around the fulcrum pin 14 to adjust the angle θ with the cloth 2.

Further, cake thickness adjusting holes 18 are formed in the left and right side plates 7b, 7c of the concentrator body 7 so that the position of the fulcrum pin 14 can be changed up and down.

Further, a sealing material 19 is provided on the peripheral surfaces of the drum frame side plates 12 and 13 on the surfaces facing the left and right side plates 7b and 7c of the concentrator body 7.

Inside the drum frame 11, a plurality of parallel eccentric drums 20 having axes in the width direction of the cloth 2 are arranged in a straight line along the moving direction A of the cloth 2, and the eccentric shafts of the eccentric drums 20 are arranged. twenty one
Are rotatably supported by the drum frame 11 via bearings 22. At this time, the drum frame side plates 1 are attached to both ends of the eccentric drum 20.
A seal rubber 20 'is provided to protect the bearing 22 by performing a seal between the bearing 22 and the bearing 13. γ indicates the amount of eccentricity of the eccentric drum 20.

The bearing 22 projects outward from the openings 23 formed in the left and right side plates 7b, 7c of the concentrator body 7, and the eccentric shafts 21
A driven sprocket 24 is fixed to one end of the.

At this time, since the sealing material 19 is provided between the left and right side plates 7b and 7c and the drum frame side plates 12 and 13, liquid or the like does not leak from the opening 23.

Each driven sprocket 24 of the eccentric drum 20 is wound around a power transmission material 25 such as an endless chain or a timing belt, and a sprocket 26 for maintaining tension and engagement of the power transmission material 25 is provided. One of the driven sprockets 24 is driven by a drive sprocket 27 that rotates by receiving power from a compression device that compresses the cake 5 on the downstream side (not shown) to perform solid-liquid separation. A drum drive device 29 configured to be rotationally driven is configured. In the figure, 30 indicates a liquid generated by dehydration of the muddy substance 3.

The eccentric drum 20 repeatedly applies pressure to the mud substance 3 in a manner of “high”, “medium”, “low”, “medium” by rotation, but the mud substance moved by the cloth 2 While each part of 3 passes through each of the eccentric drums 20, the series of pressure changes "high", "medium", "low" and "medium" are subjected to at least one action (integer multiple).

In FIG. 3, all the eccentric drums 20 have the same eccentric direction, and the mutual spacing l of the eccentric drums 20 is set to the eccentric drum 20.
1/2 of the circumference of In addition, the rotational speed of the eccentric drum 20 or the moving speed of the cloth 2 is set so that the moving speed of the cloth 2 and the peripheral speed of the eccentric drum 20 match. According to this, the muddy substance 3 is repeatedly subjected to the action of the series of pressure changes twice while passing through all the eccentric drums 20.

As shown in FIG. 3, the cloth 2 and the eccentric drum 20 are driven in a set state, and the inclination adjusting device 17 connects the cloth B with the line B connecting the axes of the eccentric shafts 21 of the eccentric drums 20. When the slant angle θ of the drum unit 10 is set so that the interval becomes gradually narrower toward the downstream side, when the muddy substance 3 is supplied from the supply port 4 into the concentrator body 7 as shown in FIG. , The muddy substance 3 moves the cloth 2 and the eccentric drum 20
Is gradually fed from the upstream side toward the narrow downstream side.

At this time, while the muddy substance 3 passes through all the eccentric drums 20, it is “high”, “medium”, and “low” by each eccentric drum 20.
Since a series of "medium" pressure actions are received at least once, the repetitive strength and weak action of the pressing force caused by the series of pressure actions described above effectively removes the liquid, resulting in efficient concentration. Is done.

When the mud-like substance 3 was concentrated, when the liquid was drained by repeatedly applying the strength as the pressing force as in the present invention, the separation efficiency could be remarkably improved as compared with the case where the strength was not applied.

Further, by making the rotating direction of the eccentric drum 20 coincide with the cloth moving direction A, even if the eccentric drum 20 has a transporting action for the mud-like substance 3 and has a large fluidity, it can be easily introduced in the moving direction and a uniform supply can be performed. .

Further, as described above, the concentration of the mud-like substance 3 is performed by the concentrator body 7
Since there is no problem of protruding in the width direction when pressure is applied unlike the conventional cloth squeezing method, the inclination angle θ of the drum unit 10 and the eccentricity amount γ of the eccentric drum 20 should be selected. Thus, the pressing force can be arbitrarily adjusted to achieve effective concentration.

By enabling effective concentration as described above, the configuration of the entire concentrator can be made small.

As described above, the cake 5 that is effectively concentrated and carried out from the cake outlet 6 of the concentrator body 7 by the cloth 2 is
It is guided to a depressing device such as a dewatering roller with a downstream cloth (not shown) for efficient separation.

In the illustrated case, the eccentricity amounts γ of the eccentric drums 20 are the same, but the eccentricity amount is made smaller toward the downstream drums, or the non-eccentric drums are arranged at the most downstream position to make the cake 5 flat. It may be possible to achieve this.

The concentrating device of the present invention is not limited to the above-described embodiment, but the number of eccentric drums to be installed, the diameter, the amount of eccentricity, and the like can be selected in various ways, and the eccentric drum drive system is not limited. Needless to say, various changes can be made without departing from the scope of the present invention.

[Effects of the Invention] As described above, according to the concentrator of the present invention, the mud-like substance can be effectively concentrated in the concentrator body by the repeated action of the pressing force by the eccentric drum. The concentrator can be downsized, and the rotation of the eccentric drum can be made to coincide with the cloth movement direction to facilitate the transfer of mud substances, thus significantly increasing the overall equipment for solid-liquid separation. It is possible to obtain an excellent effect that it is small and can be simplified.

[Brief description of drawings]

1 is a side view of one embodiment of the present invention, and FIG. 2 is a side view of FIG.
II-II enlarged arrow view, FIG. 3 is a detailed view of the drum unit and the drum driving device. 2 is a cloth, 3 is a muddy substance, 4 is a supply port, 6 is a cake outlet, 7 is a concentrator body, 7'is an opening, 7a is a downstream side plate, 10
Is a drum unit, 11 is a drum frame, 14 is a fulcrum pin, 17 is a tilt adjusting device, 20 is an eccentric drum, 21 is an eccentric shaft, 29 is a drum driving device, A is a cloth moving direction, and B is a line connecting the axes. Show.

Claims (1)

[Scope of utility model registration request] 1. A cloth movably provided in a horizontal direction,
A lower side is opened close to the cloth, and has a supply port of the muddy substance on the upper side in the moving direction of the cloth, and a concentrator body having a cake outlet on the downstream side plate,
A plurality of parallel eccentric drums having axes perpendicular to the cloth moving direction are rotatably provided on the drum frame, and the distance between the line connecting the axis of each eccentric drum and the cloth is upstream in the cloth moving direction. A concentrating device comprising: a drum unit supported in the concentrating device main body so as to widen and become narrower toward a downstream side; and a drum driving device that rotationally drives each of the eccentric drums.