JP2000279714A - Separating and recovering device for sludge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a simple and miniaturized device not requiring to be cleaned nor exchanging a filter in particular. SOLUTION: A filter means 41 is arranged so as to interrupt an inlet 8 for taking in a liquid containing sludge and a discharge port 9 for discharging the liquid from which the sludge is removed, in the inside of a container provided with the inlet 8 and the discharge port 9, and also a sludge scraping means 46 for scraping the sludge stuck to the filter means is arranged in the vicinity of the filter means 41, and also an opening part 6 for taking out the sludge is formed on the lower part of the container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for separating and recovering sludge, and more particularly to a device for separating and recovering sludge contained in a liquid efficiently.

[0002]

2. Description of the Related Art For example, in a process of recovering floating oil floating in a liquid by a floating oil recovery system in a machine tool factory, an iron factory, and the like, sludge contained in the liquid is conventionally removed by a cartridge filter or a paper filter. It is known to filter or adsorb with a metal magnet roll and scrape off with a scraper.

[0003]

However, when the sludge contained in the liquid is removed by such a method, the amount of the cartridge filter and the paper filter when treated as waste increases, while the amount of the metal magnet roll increases. At present, abrasive grains and aluminum powder cannot be collected, and the entire collection tank must be cleaned once every three to six months, which is expensive and difficult. was there.

The present invention solves the above-mentioned problems, and proposes a simple and small sludge separation / recovery device which does not require any replacement of a filter which has been treated as a consumable item and which does not require cleaning. That is the subject.

[0005]

As a means for solving the above-mentioned problems, a sludge separation and recovery apparatus according to the present invention has an inlet for taking in a liquid containing a sludge and a sludge removed. A filter means is disposed inside the container provided with a discharge port for discharging the liquid afterward so as to block the intake port and the discharge port, and the filter means is attached to the vicinity of the filter means. A scraping means for scraping the sludge is provided, and an opening for taking out the sludge is formed at a lower portion of the container.

[0006] The filter means may be rotatably provided.

[0007] The scraping means may be rotatably provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a sludge separation / recovery device according to the present invention. In this separator / recovery device 1, a container 2 is formed by upper and lower members 2a and 2b, and the upper and lower members 2a 2b is fixed by a fixture 3 consisting of a bolt and a nut at its flange portion.

An upper member 2a and a lower member 2b constituting the container 2
Has a cylindrical shape, and the upper member 2a has a smaller diameter than the lower member 2b. A lid member 4 is fixed to an upper portion of the upper member 2a, and a hopper portion 5 formed in an inverted substantially conical shape is formed continuously at a lower portion of the lower member 2b. And this hopper part 5
A rotary valve 7 is attached to an opening 6 at the tip of the rotary valve. The rotary valve 7 is provided so as to be rotated by a motor (not shown).

The upper side surface of the lower member 2b is provided with an inlet 8 for taking in the liquid containing the sludge, and the side surface of the lid member 4 is provided with a drainage for discharging the liquid after the sludge is removed. An outlet 9 is provided. A discharge pipe 10 is attached to the discharge port 9.

Next, the rotation shaft 1
The upper portion of the rotating shaft 12 projects from the cover member 4 and the gear 13 is fixed. And this gear 1
3 is meshed with one gear (not shown) of a drive mechanism 14 using a motor as a drive source. A hopper portion 5 formed in an inverted substantially conical shape is provided below the rotary shaft 12.
A blade member 15 for scraping the sludge attached to the inner side surface of the blade is attached.

As shown in FIGS. 1 and 5, the rotary shaft 12 is provided with a bearing plate 16 provided at the boundary between the lower member 2b constituting the container 2 and the hopper portion 5 and each bearing 20 provided at the center of the lid member 4.
Is supported by An oil seal 17 is provided outside the bearing 20. In the vicinity of the outer periphery of the bearing plate 16, four elongated through holes 18 and one through hole 19 located inside the through holes 18 are formed along the outer periphery.

Liquid ejecting means is disposed near one side of the rotating shaft 12 in the container 2 so as to extend along the longitudinal direction of the rotating shaft 12. A large number of small holes 22 are formed at predetermined intervals in the longitudinal direction of the side surface of the pipe 21. The rear end of the pipe 21 projects outside the container 2 and is connected to a discharge port (not shown) of a pump 23 provided outside the container 2 as shown in FIGS. 1 and 6. I have. Further, a branch pipe 10a of the discharge pipe 10 is connected to a suction port (not shown) of the pump 23. Thereby, the pump 2
By rotating 3, the small holes 22 of the pipe 21 can be spouted vigorously and clogging of a cylindrical filter described later can be prevented. Note that a slit may be provided instead of the small hole 22.

Next, a cylindrical filter 24 (filter means) is provided around the rotary shaft 12 and the pipe 21 of the liquid ejecting means with a predetermined gap, and the upper part of the filter 24 is formed on the lower surface of the lid member 4. Recess 25 provided in
The lower part is supported by a fixing member 27 fixed to the rotating shaft 12 near the bearing plate 16. The filter 24 is formed of a ceramic material, and has a large number of holes 28 formed on the entire surface thereof. The size of the hole 28 is preferably in the range of 10 to 50 microns.

As shown in FIG. 1 and FIG.
Two screw brushes 30, 31 (scraping means) are provided in the longitudinal direction near one side of the outside to prevent clogging of the hole 28 of the filter 24 by brushing, and the screw brushes 30, 31 are provided. Are formed by spirally attaching brushes 33 around the rotating shafts 32. Further, the lower portions of the rotating shafts 32, 32 are provided with bearing holes 3 of a bearing member 34 attached in a state of being idle with a fixing member 27 fixed to the center rotating shaft 12.
5, and the upper part is supported by a bearing 40 provided near the side of the lid member 4. An oil seal 39 is provided above the bearing 40.

The two screw brushes 30, 31
As shown in FIG. 2, the brushes 33, 33 are arranged such that a part thereof overlaps when viewed from a plane. The spiral brushes 33 provided around the rotary shafts 32 are formed so that the spiral directions are opposite to each other. That is, the brush 3 of the upper screw brush 30
3 is a right-handed left-downward screw screw 31 at the bottom
It is preferable that the brush 33 is formed in a left-handed and downward-sloping manner.

The upper portions of the rotating shafts 32, 32 protrude from the cover member 4, and gears 36, 37 are fixed, and the gears 36, 37 are engaged. One gear (not shown) of a drive mechanism 38 using a motor as a drive source is meshed with one of the gears 36. In addition,
As the gears 36 and 37 rotate, the fine brushes attached to the holes 28 of the filter 24 together with the liquid by the spirally formed brushes 33 and 33 of the screw brushes 30 and 31 are sent downward to the screw Through hole 1 of bearing plate 16 arranged below brushes 30 and 31
It is led to 9.

Next, a cylindrical filter 41 (filter means) is provided around the cylindrical filter 24 and the two screw brushes 30 and 31 with a predetermined gap, and the upper part of the filter 41 is a container. The upper and lower members 2a and 2b forming the second member 2 are loosely fitted in concave portions 42 formed in flange portions, and the lower portion is fixed to a bottom plate 43 attached to a fixing member 27 fixed to the rotating shaft 12 near the bearing plate 16. Have been. The bottom plate 43 is formed with four elongated through holes 44 along the outer periphery. The filter 41 is formed of a sintered metal material, and has a large number of holes 45 formed on the entire surface thereof. The size of the hole 45 is 50 to 1
Those within the range of 00 microns are preferred.

The cylindrical filter 24 and the cylindrical filter 41 are formed so as to rotate in the same direction in the container 2 by rotating the rotating shaft 12 by the driving mechanism 14 using a motor as a driving source.

As shown in FIGS. 1 and 2, brushing prevents a hole 45 of the filter 41 from being clogged in a longitudinal direction slightly in front of one side (near the screw brushes 30 and 31) of the filter 41. For this purpose, a screw brush 46 (scraping means) is provided, and the screw brush 46 is formed by attaching a brush 48 in a spiral shape around a rotating shaft 47. The lower part of the rotary shaft 47 is supported by a bearing hole 48 formed in the bearing plate 16, and the upper part is formed by upper and lower members 2 a and 2 b forming the container 2.
Are supported by a bearing 50 formed on the flange portion of the. An oil seal 4 is provided above the bearing 50.
9 are provided.

The upper part of the rotating shaft 47 is composed of the upper and lower members 2a, 2b.
And a gear 51 is fixed, and this gear 51 is meshed with one gear (not shown) of a drive mechanism 52 driven by a motor.

A cylindrical guide wall 53 is provided around the filter 41 and the screw brush 46, and the guide wall 53 is located in the lower member 2 b of the container 2. The lower part of the guide wall 53 is in contact with the upper surface of the bearing plate 16. Next, a collecting layer 55 is provided below the container 2 for collecting sludge that is taken out together with the liquid by rotating the rotary valve 7 attached to the opening 6 of the container 2. 5
5 is provided with a filter 56 made of a nonwoven fabric. Further, a valve 57 for collecting the liquid from which the sludge has been removed is attached to the side surface of the collection layer 55.

According to the sludge separation / recovery apparatus 1 having the above configuration, first, the cylindrical filters 24 and 41 in the container 2 are formed.
In a state where the two screw brushes 30, 31 and the screw brush 46 are rotating through the respective drive mechanisms 14, 38, 52, as shown in FIG. 1 and FIG. The liquid containing sludge that has flowed into the container 2 overflows the guide wall 53 while circulating along the guide wall 53 as shown by an arrow. At this time, sludge such as heavy metal powder sinks, and abrasive powder or aluminum powder having low specific gravity overflows the guide wall 53 together with the liquid.

Then, the sunk sludge is applied to the bearing plate 16.
Are collected in the hopper 5 through the four through holes 18 provided in the hopper 5, and can be collected in the collection layer 55 by rotating the rotary valve 7 provided in the opening 6 at the tip of the hopper 5.

Next, the abrasive powder, aluminum powder and the like having a small specific gravity which overflowed the guide wall 53 together with the liquid are filtered by a cylindrical filter 41 having a large number of holes 45 of 50 microns. The sludge that is gradually attached to the filter 41 and collected is scraped off by the screw brush 46 and sent downward, passes through the through holes 18 and 50 of the bearing plate 16, and collects in the hopper 5. When the rotary valve 7 provided in the opening 6 at the tip rotates, it can be collected in the collection layer 55.

The sludge and the like accumulated on the surface of the hopper 5 are scraped off by a blade member 15 attached to the lower part of the rotating shaft 12 and sent to the opening 6, and the rotary valve 7 provided in the opening 6 rotates. Thereby, it can be collected in the collection layer 55.

Further, the sludge accumulated on and adhered to the surface of the filter 41 is always scraped off by the screw brush 46, so that a clean surface can be obtained and the filtration can be reliably performed. The screw brush 46 may be rotated only when necessary.

Further, abrasive powder or aluminum powder having a low specific gravity contained in the liquid that has passed through the cylindrical filter 41 is filtered by the cylindrical filter 24 having a large number of holes 28 formed therein to become a clean liquid. Can be discharged from the discharge port 9.

In the process of filtering by the filter 24, the sludge that has gradually adhered to and accumulated on the filter 24 is removed by the two screw brushes 30, 31.
And can be sent downward sequentially. Then, the sent sled is formed in the through hole 19 of the bearing plate 16.
And is collected in the hopper 5, and can be collected in the collection layer 55 by rotating the rotary valve 7 provided in the opening 6 at the tip of the hopper 5.

Furthermore, the sludge accumulated on the surface of the filter 24 is always scraped off by the two screw brushes 30, 31, so that a clean surface is always obtained and the filtration can be reliably performed. When a large number of holes 28 of the filter 41 are clogged, water is spouted vigorously from a large number of small holes 22 provided at predetermined intervals in the longitudinal direction of the side surface of the pipe 21 of the liquid jetting means. Can be eliminated. The two screw brushes 30, 31 may be rotated only when necessary.

In addition, since the structure is simple, it is possible to reduce the size, and it is economical because no installation space is required.

[0033]

As described above, according to the first aspect of the present invention, there is provided a container provided with an inlet for taking in a liquid containing a sludge and an outlet for discharging the liquid after the sludge has been removed. Inside, a filter means is disposed so as to block the intake port and the discharge port, and in the vicinity of the filter means, a scraping means for scraping the sludge attached to the filter means is disposed, and Since the outlet for the sludge is formed in the lower portion of the container, the sludge such as metal powder having a large specific gravity contained in the liquid sinks down and can be recovered from the opening.

Abrasive powder, aluminum powder, carbon powder and the like having a low specific gravity can be filtered by a filter means. And the sludge attached to the filter means can be scraped off by the scraping means,
A clean surface is always obtained and filtration can be performed reliably.

Further, since it is not necessary to replace the filter means, it is economical, and it is possible to measure the size of the filter.

According to the second aspect of the present invention, since the filter means is rotatably provided, the sludge attached to the filter means can be efficiently scraped off via the scraping means.

According to the third aspect of the present invention, since the scraping means is rotatably provided, the scrape attached to the filter means can be scraped more efficiently together with the rotation of the filter means. Can be done.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a sludge separation and recovery device according to the present invention.

FIG. 2 is a cross-sectional view of the sludge separation and recovery device.

FIG. 3 is a plan view of a bearing member that supports a lower portion of a rotating shaft of two screw brushes.

FIG. 4 is a plan view of a cylindrical filter located outside.

FIG. 5 is a plan view showing a relationship between a lower member constituting the container and a bearing plate;

FIG. 6 is an explanatory diagram showing a relationship between a pipe of the liquid jetting means and a pump provided outside the container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sludge separation and collection apparatus 2 Container 6 Opening 8 Inlet 9 Discharge part 24,41 Filter 30,31,46 Screw brush

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 35/16 B01D 29/10 520C 530Z 29/26 B 35 / 02F

Claims (3)

[Claims] 1. A container having an inlet for taking in a liquid containing a sludge and an outlet for discharging a liquid after the sludge has been removed is provided inside a container.
A filter means is disposed so as to block the inlet and the outlet, and a scraping means for scraping the sludge attached to the filter means is disposed near the filter means, and An apparatus for separating and collecting sludge, wherein an opening for taking out the sludge is formed in a lower part of the container. 2. The sludge separation and recovery device according to claim 1, wherein said filter means is rotatably provided. 3. The apparatus according to claim 1, wherein said scraping means is rotatably provided.