JPH08206416A - Feeder - Google Patents

Abstract

PURPOSE: To provide a feeder which has a simple structure and can pack efficiently a material to be filtered. CONSTITUTION: The feeder has a cylindrical case body 51 in which a material to be filtered of a mixture of liquid and solid is supplied and a screw 57 which is installed in the case body 51, can be rotated by a driving motor 62, and can push the material into a dewaterer 1 under the atmospheric pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device for charging a substance to be filtered, which is a mixture of a liquid and a solid, into a dehydrator, and more particularly to a filter cylinder formed of a filter medium in a substantially cylindrical shape. The present invention relates to a feeding device suitable for a dehydrator called a screw press, which continuously compresses an object to be filtered while transferring the object to be filtered and dehydrates a liquid content from the object to be filtered by a filter material.

[0002]

2. Description of the Related Art Generally, a sludge such as surplus sludge, coagulation sludge, flotation separation scum or a sludge or a mixture of liquid and solid, which is to be filtered, has a size larger than a predetermined size. Various dehydrators that separate into solid filter cake and filtrate filtered by filtration are used to separate domestic wastewater such as human waste treatment plant, sewage treatment plant, machine factory, chemical factory, food factory or various industrial wastewater. It is often used for etc.

As such a conventional dehydrator, a so-called screw press is known. This screw press is equipped with a filter cylinder (dehydration cylinder) made of a filter material having a cylindrical sieve surface made of punching metal or the like having a large number of through holes of an appropriate size, and an appropriate spiral inside the filter cylinder. A conveyer is arranged, and a filter cylinder is constructed by gradually and continuously compressing the object to be filtered supplied into the filter cylinder while axially moving the inside of the filter cylinder with a spiral conveyor. Liquid content is dehydrated (separated) from the object to be filtered using the screen surface of the filter material
Then, a solid filter cake called a dehydrated cake and a filtrate called a squeezed juice filtered by filtration are separated (solid-liquid separation).

Further, in the conventional screw press, when the object to be filtered, for example, the sludge is dehydrated, the object to be filtered to which the coagulant is added is put into the inside of the filter cylinder.

As the conventional charging method for such a screw press of the object to be filtered, the following two types are used.

In the first conventional method for introducing the object to be filtered, an opening is formed at a desired position of the screw press so that the object to be filtered can be introduced, and the object to be filtered is introduced only by gravity through the opening. It is something that is done.

The second conventional method for introducing the object to be filtered is to form a closed introducing hole into which the object to be filtered can be introduced at a desired position of the screw press, and to insert the object to be filtered into the closed introducing hole. Is to be press-fitted by a pump or the like.

[0008]

However, in the above-mentioned first conventional method of introducing the object to be filtered, the object to be filtered which is simply charged by gravity causes an arching phenomenon (solid content becomes a bridge shape). There is a problem that the product to be filtered does not fill the spiral conveyer of the screw press because the object to be filtered is attached to the inside of the filter cylinder, and the processing efficiency is poor and the dehydration efficiency is also poor. there were.

Further, in the second conventional method of introducing the object to be filtered, the object to be filtered can be filled in the spiral conveyer of the screw press, but the state of the object to be filtered cannot be visually confirmed. It is not possible to determine whether or not the condition of the object to be filtered is proper, and the undesired high pressure is applied to the part to be filtered to damage the part to be filtered, or the object to be filtered with a flocculant is used. In that case, there is a problem in that the aggregated state of the object to be filtered is broken. Furthermore, there is a problem that an additional cost such as a pump is required, which imposes a heavy financial burden.

An object of the present invention is to provide a charging device which overcomes the above-mentioned problems in the conventional device and which is capable of efficiently filling an object to be filtered with a simple structure.

[0011]

In order to achieve the above-mentioned object, the charging device of the present invention according to claim 1 supplies a body to be filtered which is formed in a cylindrical shape and which is composed of a mixture of liquid and solid. A case body and a press-fitting screw that is disposed inside the case body and can be rotationally driven by a driving force of a drive motor and that can push the body to be filtered into a dehydrator under atmospheric pressure. Is characterized by.

[0012] According to a second aspect of the present invention, in the charging device according to the first aspect, the case body is provided with a perforated cylinder capable of self-weight dehydration of the body to be filtered, and the inside of the perforated cylinder. It is characterized in that the press-fitting screw is provided in the.

[0013]

According to the charging device of the present invention having the above-mentioned structure, the body to be filtered which is a mixture of the liquid and the solid supplied to the inside of the case body is the driving force of the drive motor. The dehydrator can be filled with the press-fitting screw that is driven to rotate.

Further, according to the charging device of the present invention as set forth in claim 2, the object to be filtered which is a mixture of the liquid and the solid supplied into the inside of the perforated cylinder is dehydrated by its own weight while being dehydrated by its own weight. The dehydrator can be filled with the press-fitting screw that is rotationally driven by the driving force of the drive motor.

[0015]

Embodiments of the present invention will now be described with reference to the drawings.

FIGS. 1 to 3 are partially cut front views showing essential parts of an embodiment of a charging device according to the present invention, FIG. 2 are partially cut side views of essential parts, and FIG. It is a top view of a part.

As shown in FIGS. 1 to 3, the charging device 50 of this embodiment has a cylindrical case body 51 formed of a rigid material such as metal.
1, a flange portion 52 is provided at each of the upper end portion and the lower end portion shown in the up-down direction. The lower flange portion 52a of the case body 51 shown below in FIG. 1 is supplied with an object S to be filtered which is a mixture of a liquid and a solid of a dehydrator 1 described later and is shown by an imaginary line in FIG. It is adapted to be connected to the hopper 10.
Further, a support frame 54 having a substantially trapezoidal plane shape having an opening 53 (FIG. 3) communicating with the inside of the case body 51 is provided above the upper flange portion 52b of the case body 51 shown in FIG. The one side surface shown in FIG. 2 is arranged so as to project outward from one side surface of the case body 51. In addition, as shown in FIG. 1, a drain port 55 that communicates the inside and outside of the case body 51 is provided at the lower portion of the outer peripheral surface of the case body 51.
Is provided.

Inside the case body 51, a perforated cylinder 56, which is formed in a substantially flat oval shape in the vertical direction in FIG. 1, is arranged. The perforated cylinder 56 has a cylindrical sieve surface (not shown) formed of punching metal or the like having a large number of through holes of an appropriate size.

Two press-fitting screws 57 are rotatably arranged inside the perforated cylinder 56. The press-fitting screws 57 are arranged in parallel with each other such that their axial center directions extend in parallel with the axial direction of the case body 51. As shown in FIG. 3, the upper portion of each press-fitting screw 57 shown in FIG. 1 is rotatably supported by a mounting plate 58 spanning the opening of the support frame 54. The lower part shown in the lower part of FIG. 1 is rotatably supported by a mounting plate (not shown) which is hung on a lower flange part 52a of the case part shown in the lower part of FIG. Further, the upper end portion of each press-fitting screw 57 shown in FIG. 1 above is projected above the mounting plate 58, and the driven sprocket 59 is attached to this upper end portion.
Are attached respectively.

As shown in FIG. 3, the perforated cylinder 56 is attached to the mounting plate 58 which is hung over the opening 53 of the support frame 54.
An input hole 60 for supplying the object S to be filtered to the inside of the container and a window 61 for visually recognizing the object S to be filtered supplied to the inside of the perforated barrel 56 from the outside are formed.

A drive motor 62, which is a reduction motor for driving each press-fitting screw 57, is attached to the support frame 54 with its output shaft 62a facing downward.
3, a drive sprocket 65 and a drive gear 66 are attached to the tip of the output shaft 62a via a coupling 64, as shown in FIG. Then, as shown in FIG. 3, the outer circumferences of the drive sprocket 65 attached to the output shaft 62a of the drive motor 62 and the driven sprocket 59 attached to the press-fitting screw 57 shown on the left side in FIG. An endless roller chain 67 is wound so as to come into contact with the surface. Further, as shown in FIG. 3, a rotation shaft 68 is attached to the support frame 54 located on the right side of the drive motor 62, and the rotation shaft 68 is sequentially driven by the driven gear 69 from the support frame 54 side. And the sprocket 70 is coaxially attached. The driven gear 69 attached to the rotary shaft 68 is meshed with the drive gear 66 arranged coaxially with the output shaft 62a of the drive motor 62, as shown in FIG. The attached sprocket 70 and FIG.
The endless roller chain 67 is wound so as to come into contact with the respective outer peripheral surfaces of the driven sprocket 59 attached to the press-fitting screw 57 shown on the right side of FIG.

That is, the driving force of the drive motor 62 is as shown in FIG.
As shown in FIG.
Drive sprocket 65 connected to the second output shaft 62a,
It is transmitted to the press-fitting screw 57 shown on the left side in FIG. 3 via the roller chain 67 and the driven sprocket 59, and the drive motor 62 via the coupling 64.
Drive gear 66, rotating shaft 68 connected to the output shaft 62a of
3 is transmitted to the press-fitting screw 57 shown on the right side in FIG. 3 via the driven gear 6968 attached to the sprocket, the sprocket 70 attached to the rotary shaft, the roller chain 67, and the driven sprocket 59. The to-be-filtered body S supplied to the inside of 56 is rotatable so as to be pushed into a loading hopper 10 of a dehydrator 1 which will be described later and is shown by an imaginary line located below in FIG.

The number of press-fitting screws 57 may be one or three or more depending on the processing amount and the like, and is not particularly limited to the number in this embodiment.

Here, an embodiment of the dehydrator in which the charging device of this embodiment is used will be described.

In this embodiment, the charging device according to the present invention is used in a dehydrator called a screw press.

First, a schematic structure of a dehydrator in which the charging apparatus of this embodiment is used will be described with reference to FIGS. 4 and 5.

FIG. 4 is a front view showing the main part of the schematic construction of the first embodiment of the dehydrator in which the charging device according to the present invention is used, and FIG. 5 is a partial cutaway showing the main part without the charging device. FIG.

As shown in FIGS. 4 and 5, the dehydrator 1 of this embodiment has a gantry 2 which is made of a rigid material such as metal and has a substantially rectangular shape in plan view. At a lower portion, a desired number of leveling mounts 3 that also adjust the level of the dehydrator 1 and absorb vibrations and wheels 4 that allow the dehydrator 1 to move are disposed at appropriate positions, for example, at four corners. .

A filtrate receiver 5 is arranged above the pedestal 2. The filtrate receiver 5 is for collecting the filtrate E called a squeezed liquid or the like that is dehydrated by the drainage port 55 of the charging device 50 and the filter cylinder 6 described later and flows out and falls to the outside. 1 is formed over most of the central portion in the longitudinal direction shown in the left-right direction in FIG. A filtrate discharge port 8 is arranged at a position lower than the upper surface of the gantry 2 in a substantially central part of the plane of the filtrate receiver 5 so that the filtrate E dropped into the filtrate receiver 5 can be sent to a recovery tank (not shown). There is.

On the left side of the upper surface of the gantry 2 in FIG. 1, a storage container 9 for storing a solid filter cake K called a dehydrated cake which is axially discharged from the inside of the filter cylinder 6 is provided. A control panel (both not shown) having various operation switches and the like is arranged at a desired position of the gantry 2.

A filtration tube (dehydration tube) is provided above the gantry 2.
6 are provided. The filtration cylinder 6 is formed in, for example, a substantially cylindrical shape having an inner diameter of about 200 mm, dehydrates the liquid from the object S to be filtered, and the object S to be filtered is a solid filter cake K.
And filtrate E filtered by filtration (solid-liquid separation)
Is ready to go. 1 and 2 on the right side of the filter cylinder 6 is a supply side IS to which the body S to be filtered is supplied, and the other end of the filter cylinder 6 shown on the left side in FIGS. The side is the discharge side OS from which the dehydrated filter cake K is discharged.

At the end surface of the supply side IS of the filtration cylinder 6, there is provided a loading hopper 10 for feeding the object S to be filtered into the filtration cylinder 6, and an upper opening hopper 10 is provided. The lower part of the charging device 50 described above is attached.

The filtration cylinder 6 and the charging hopper 10 are parallel to the upper surface of the gantry 2 by a plurality of supporting members 11 provided upright on the gantry 2, and the gantry 2 shown in the left and right directions in FIGS. 1 and 2. The filter tube 6 is supported so that the axial direction of the filter tube 6 extends parallel to the longitudinal direction of the filter tube.

Inside the filter tube 6 and the charging hopper 10, a charging device 50 disposed above the charging hopper 10.
Transfer of the object S to be filtered, which is supplied from, from the right side to the left side in FIG. 1 and FIG. 2 while being gradually transferred (pressurized transfer) while being axially transferred inside the filtration cylinder 6. A spiral conveyor 12 as a means is arranged. At both ends of the spiral conveyor 12, journal portions 13 each having a smaller diameter than the outer diameter of the spiral conveyor 12 are provided. The journal portion 13a arranged at the right end shown on the right side in FIGS. 1 and 2 of the spiral conveyor 12 has most of the lengthwise direction projecting from the input hopper 10, and the outer peripheral surface on the tip side thereof. , The gear 14 is attached. This gear 14
Is connected to and supported by a speed reducer 15, such as a worm speed reducer, which is disposed above the gantry 2 located to the right of the input hopper 10. In addition, the spiral conveyor 12
1 and 2, most of the journal portion 13b disposed at the left end shown on the left side protrudes from the filtration cylinder 6 in the length direction, and the tip thereof is at the left end portion in the longitudinal direction of the upper surface of the gantry 2. It is rotatably supported by a support member 11 located in the vicinity (discharging side OS).

A driven sprocket 16 is attached to the input shaft 15a of the speed reducer 15. A drive motor 17 is disposed near the right end of the upper surface of the gantry 2, and a drive sprocket 18 is attached to an output shaft 17a of the drive motor 17. And the speed reducer 15
The endless roller chain 19 is wound so as to come into contact with the respective outer peripheral surfaces of the driven sprocket 16 attached to the input shaft 15a of the drive shaft and the drive sprocket 18 attached to the output shaft 17a of the drive motor 17. It has been turned. That is, the driving force of the drive motor 17 is transmitted to the spiral conveyor 12 via the speed reducer 15, and the object S to be filtered supplied from the upper part of the input hopper 10 is moved from right to left in FIGS. 1 and 2. It is rotatable so that it can be gradually pressurized while being transferred.

Next, a schematic structure of the filter cylinder 6 of the dehydrator 1 of this embodiment will be described.

As shown in FIGS. 4 and 5, the filter cylinder 6 of this embodiment includes a front filter cylinder 6A located on the supply side IS (on the side of the charging hopper 10) and a discharge side OS (front filter cylinder 6). Is divided into a rear filter cylinder 6B located on the left side of FIG.

Next, the front filter cylinder 6A of this embodiment will be described in detail with reference to FIGS.

As shown in FIGS. 4 and 5, the front filter cylinder 6A of the present embodiment moves from the supply side IS to the discharge side OS (right to left in FIGS. 1 and 2) by the spiral conveyor 12. It is for dehydrating the object S to be filtered which is pressure-transferred toward it by gravity filtration, and a cylindrical sieve surface (not shown) is formed by punching metal or the like having a large number of through holes of an appropriate size. It has the filter material 7 that has been processed. Flange members 21 are provided on both ends of the filter material 7 in the axial direction.
Is attached. The inner diameter of the flange member 21 is substantially the same as or slightly larger than the inner diameter of the filter medium 7, and the outer diameter of the flange member 21 is equal to the outer diameter of the filter medium 7.
Is formed to be larger than the outer diameter dimension of. Further, one flange member 21 located on the supply side IS is attached to the input hopper 10 by a bolt or the like not shown, and the other flange member 21 located on the discharge side OS is the filter medium of the front filter cylinder 6A. The inner hole 21a has an inner diameter that is substantially the same as the inner diameter of No. 7. The other flange member 21 located on the discharge side OS has a mounting member 22 having an inner hole 22a having an inner diameter substantially the same as the inner diameter of the filter medium 7 of the front filter cylinder 6A, and the other longitudinal direction of the gantry 2 The support members 11 located in the substantially central portion support the respective axes with the same axis (see FIG. 6).

As shown in FIGS. 4 and 5, a plurality of rod-shaped reinforcing members 23 for preventing deformation of the filter medium 7 are provided between the flange members 21 so as to contact the outer peripheral surface of the filter medium 7. It is arranged. In addition, on the outer peripheral surface of the filter medium 7,
An annular reinforcing ring (not shown) may be provided if necessary, and the structure is not particularly limited to the structure of this embodiment.

Next, the rear filter cylinder 6B of this embodiment will be described in detail with reference to FIGS. 6 to 8.

FIG. 6 is a partially cutaway plan view showing a main part of a rear filter cylinder of a dehydrator in which the charging device of the present invention is used, FIG. 7 is a plan view showing a ring plate, and FIG. 8 is a rear filter. It is an expanded sectional view which shows the principal part of a cylinder.

The rear filter cylinder 6B of the dehydrator 1 of this embodiment is
As shown in FIG. 6, the spiral conveyor 12 pressurizes and transfers from the supply side IS to the discharge side OS (right side to left side in FIGS. 4 to 6) and gravity filters the front side filtration cylinder 6A. The filter medium 2 is for further high-pressure dehydration of the filter body S and is formed by stacking a plurality of annular ring plates 24 into a generally cylindrical shape as a whole.
Has 0. Each ring plate 24 that constitutes the filter medium 20 is made of a rigid material such as metal and is formed into an annular shape having a thickness of, for example, about 3 mm.
The inner diameter of 4a is substantially the same as the inner diameter of the filter material 7 of the front filter cylinder 6A. Then, as shown in FIG. 7, each ring plate 24 has six mounting holes 25 penetrating in the plate thickness direction and equidistantly arranged at equal distances from the axis of the ring plate 24. . The axis of the mounting hole 25 is located radially outside the outer peripheral surface of the ring plate 24. As shown in detail in FIG. 8, the mounting holes 25 of the ring plate 24 are fitted to the outer peripheral surfaces of the six fixing rods 26 (only a part of which are shown) so as to be movable in the axial direction. Ring plate 2
The shaft center 4 is supported so as to be the same as the shaft center of the filter medium 7 of the front filter cylinder 6.

As shown in FIGS. 7 and 8, at the portion where each mounting hole 25 of the ring plate 24 is formed, there is a storage recess 43 in which a disc spring 28 constituting a gap forming member 27 described later can be stored. It is formed coaxially with the mounting hole 25. In this embodiment, the storage recesses 43 are formed on both sides of the ring plate 24, and the depth of the storage recesses 43 is 1/2 or more of the thickness of the disc spring 28. The storage recess 43 may be formed on one surface of the ring plate 24 to be slightly deeper than the thickness of the disc spring 28, and the two ring plates 24 can be closely attached to each other. If so, it is not particularly limited to the configuration of this embodiment.

A gap forming member 27 for forming a desired gap G between the ring plates 24 adjacent to each other is fitted on each of the fixed rods 26. The gap forming member 27 is formed of an annular disc spring 28 as an elastic body in this embodiment. The disc spring 28 is expandable / contractible in the axial direction. Even when the disc spring 28 is compressed most, the outer peripheral surface of the disc spring 28 is located in the storage recess 43, and the inner hole 24a of each ring plate 24 is formed. The one located on the outer side in the circumferential direction is used.

The disc spring 28 as an elastic body is provided between the front movable plate 29 described later and the ring plate 24 adjacent to the front movable plate 29, and the rear movable plate 30 described later.
It is preferable to dispose between the rear movable plate 30 and the ring plate 24 adjacent to the rear movable plate 30 for cleaning. In this case, the front movable plate 29 and the disc springs 28 of the rear movable plate 30 and An accommodating portion (not shown) similar to the accommodating recess 43 may be provided at the opposite position.

Furthermore, as the gap forming member 27,
The disc spring 28 is not limited to the disc spring 28, and various types that can be expanded and contracted in the axial direction, such as a compression coil spring (not shown) and a wave washer, can be selected.

As shown in FIGS. 6 and 8, the front end of the fixed rod 26 located on the supply side IS is attached to the mounting member 22 to which the flange member 21 located on the discharge side OS of the front filtration cylinder 6A is attached. As shown in FIG. 3, the fixed end of the fixed rod 26, which is located on the discharge side OS, is fixed to the support member 11 that supports the journal portion 13b disposed at the left end of the spiral conveyor 12. ing.

A front movable plate 29 is disposed on the end surface of the filter medium 20 located on the supply side IS, and a rear movable plate 30 is disposed on the end surface of the filter medium 20 located on the discharge side OS. There is. The front movable plate 29 and the rear movable plate 30 are
As shown in detail in FIG. 8, the inner hole 24 of the ring plate 24
Inner hole 2 penetrating in the same thickness direction as a and the mounting hole 25
9a, 30a and mounting holes 29b, 30b through which the respective fixing rods 26 are inserted, and each ring plate 24
The fixed rods 26 are arranged so as to face each other with respect to each other and are movable in the axial direction on the outer peripheral surface of each fixed rod 26.

As shown in detail in FIG. 6, two annular guide rings 31 are attached to the discharge-side OS end surface of the rear movable plate 30 so as not to interfere with the fixed rods 26. This guide ring 31 is a filter cake K that has passed through the filter medium 20.
To guide a predetermined discharge position along the outer peripheral surface of the spiral conveyor 12, and has an inner hole 31a having the same size as the inner hole 30a of the rear movable plate 30, and
It is arranged so that its axis coincides with the axis of the inner hole 30a of the rear movable plate 30.

In the vicinity of the end of the rear side movable plate 30 on the discharge side OS end face in the direction orthogonal to the longitudinal direction of the gantry 2,
For example, a pair of auxiliary reciprocating cylinders 32 that can be driven by hydraulic pressure are attached so that their output shafts 32a extend parallel to the fixed rods 26, and the tip end of the output shaft 32a is the front movable plate 29. Is attached to. The auxiliary reciprocating cylinder 32 can always contact the front movable plate 29 so as to be in close contact with the mounting member 22 to which the flange member 21 located on the discharge side OS of the front filtering cylinder 6 is attached. ing. In addition, the auxiliary reciprocating cylinder 32 has an output shaft 32.
It is preferable to have a lock mechanism capable of fixing the position of a.

The support member 11 (on the right side in FIG. 6) supporting the mounting member 22 to which the flange member 21 located on the discharge side OS of the front filter cylinder 6A is attached, and the support member 11 disposed on the left end of the spiral conveyor 12. A pair of guide rods 33 extending in parallel with the fixed rod 26 are arranged between the supporting member 11 (left side in FIG. 6) supporting the provided journal portion 13b. The guide rod 33 is provided on the front movable plate 29.
Further, as shown in the upper part and the lower part in FIG. 6 so as to penetrate the rear movable plate 30, it is located outside the fixed rod 26 and inside the auxiliary reciprocating cylinder 32. Further, on the outer peripheral surface of each guide rod 33, a sliding ring 34 formed in a substantially cylindrical shape that slides on the outer peripheral surface of the guide rod 33 in the axial direction is disposed. One end of the sliding ring 34 located on the supply side IS is fixed to the rear movable plate 30, and the other end of the sliding ring 34 located on the discharge side OS is arranged at the left end of the spiral conveyor 12. Support member 11 supporting the journal portion 13b
And the rear movable plate 30.

At the other end of the sliding ring 34 located on the discharge side OS, the connecting plate 35 connecting the end faces of the respective sliding rings 34 does not interfere with the fixed rod 26 and the journal portion 13b of the spiral conveyor 12. Have been installed. The discharge-side OS end surface of the connecting plate 35 is attached to the support member 11 supporting the journal portion 13b arranged at the left end of the spiral conveyor 12 in the vicinity of both end portions shown in the vertical direction in FIG. The output shafts 36a of the pair of main reciprocating cylinders 36 are attached (only one is shown in the lower part of FIG. 6). The main reciprocating cylinder 36 can be driven by, for example, hydraulic pressure, and the output shaft 3 of the main reciprocating cylinder 36 can be driven.
It is preferable to have a lock mechanism capable of fixing the position of 6a.

By moving the output shafts 36a, 32a of the main reciprocating cylinder 36 and the auxiliary reciprocating cylinder 32 forward and backward, the front movable plate 29 and the rear movable plate 30 can be brought into and out of contact with each other. Each ring plate 24 that constitutes the filter medium 20 disposed between the front movable plate 29 and the rear movable plate 30 can be moved in the axial direction of the rear filtration cylinder 6B to be opened and closed, and the main reciprocating motion can be performed. Output shaft 36 of cylinder 36 and auxiliary reciprocating cylinder 32
By controlling the positions of a and 32a, the front movable plate 2
It is possible to control the separation distance L between the rear movable plate 30 and the rear movable plate 30, and thus each of the two ring plates 24 constituting the filter medium 20 arranged between the front movable plate 29 and the rear movable plate 30. The distance G between the ring plates 24 can be controlled (variable) in cooperation with the elastic force of the disc spring 28.

That is, in this embodiment, the main reciprocating cylinder 36, the auxiliary reciprocating cylinder 32, the front movable plate 29, and the rear movable plate 30 each form two filter plates 24 and a gap between them. A filter medium opening / closing means 37 for moving the disc spring 28 as a forming member in the axial direction of the rear filter cylinder 6B to open / close the ring filter 24 and two ring plates 24 constituting the filter medium 20 in the closed state. It is configured to have two functions of a gap adjusting means 38 for adjusting the gap G therebetween.

As the filter medium opening / closing means 37, a minute gap G through which the filtrate E passes is provided between the ring plates 24 constituting the filter medium 20 in a dehydration operation state in which the body S to be filtered can be dehydrated. The filter medium 20 is closed so that the filter medium 20 is formed, and the filter medium 20 is opened so that the gap G between at least the ring plates 24 constituting the filter medium 20 is increased in the cleaning state in which the filter medium 20 can be cleaned. The structure is not particularly limited to the structure of this embodiment.

Further, the space adjusting means 38 may be any structure that can adjust the gap G between the ring plates 24 constituting the filter medium 20 in the dehydrated state, and is particularly limited to the structure of this embodiment. It is not something that will be done.

Furthermore, the drive source for contacting and separating the front movable plate 29 and the rear movable plate 30 is not limited to the reciprocating cylinders such as the main reciprocating cylinder 36 and the auxiliary reciprocating cylinder 32. For example, a combination of a drive motor and a gear (not shown) may be used, and various types can be selected.

A pair of support stays 39 extending parallel to the guide rods 33 are disposed between the connecting plate 35 and the rear movable plate 30. The support stays 39 have a substantially central portion in the axial direction. A stay connecting plate 40 that connects the support stays 39 is provided on the fixed rod 26 and the spiral conveyor 1.
It is attached so as not to interfere with the second journal portion 13b. A discharge ring 41 is attached to the end surface of the stay support plate 40 on the supply side IS. The discharge ring 41 has an inner hole 41a that can be fitted to the outer peripheral surface of the discharge side OS of the spiral conveyor 12, and the end surface facing the filter cake K has an outer peripheral surface of the spiral conveyor 12 and a guide ring 31. Inclined surface 41b for discharging the filter cake K that has passed axially between the inner hole 31a of the
Are formed.

That is, in this embodiment, by driving the main reciprocating cylinder 36, the rear movable plate 30 and the discharge ring 41 are made to interlock with each other.

The filter cylinder 6 of the dehydrator 1 of this embodiment may be composed of only the rear filter cylinder 6B,
In particular, it is not limited to the configuration of the filter cylinder 6 of this embodiment.

Next, the operation of the charging device 50 of the present embodiment having the above-mentioned structure will be described.

In the charging device 50 of this embodiment, as shown in FIG.
Through a charging hole 60 shown in (1), the object S to be filtered which is made into a semi-solid state by a coagulant is supplied into the inside of the perforated cylinder 56. Then, the object S to be filtered supplied to the inside of the perforated cylinder 56.
Is subjected to self-weight dehydration by a sieve surface (not shown) of the perforated cylinder 56 as a pre-process of dehydration by the dehydrator 1, and is pre-concentrated. At this time, the filtrate E, which is the liquid component separated from the body S to be filtered by the sieve surface (not shown) of the perforated cylinder 56, is
After passing through a drainage port 55 provided at the lower part of the outer peripheral surface of 1, the liquid drops to a filtrate receiver 5 disposed on the upper surface of the pedestal 2 of the dehydrator 1, and thereafter, a recovery not shown through a filtrate discharge port 8. It is designed to be sent to a tank or the like.

The pre-concentrated object S to be filtered which remains inside the perforated cylinder 56 is put into the hopper 10 of the dehydrator 1 under atmospheric pressure by the press-fitting screw 57 which is rotationally driven by the driving force of the drive motor 62. It is pushed into the spiral conveyor 12 via.

That is, in the present embodiment, the substance S to be filtered supplied into the charging device 50 can be pre-concentrated inside the charging device 50 by the perforated cylinder 56, so that the treatment efficiency and dehydration efficiency and It is possible to reliably improve the throughput.

Then, the pre-concentrated body S to be filtered is pushed into the spiral conveyor 1 of the dehydrator 1 by the press-fitting screw 57.
2 can be pushed under atmospheric pressure, so that the object to be filtered S
The spiral conveyor 12 of the dehydrator 1 can be reliably filled with the coagulant-added substance S to be filtered.
In the case of using, the agglomeration state of the body S to be filtered can be surely maintained, and the arching phenomenon of the body S to be filtered (the solid content becomes a bridge shape) can be surely prevented, and the semi-solid state can be obtained. It is possible to reliably prevent the body to be filtered S from adhering to the inside of the filtration cylinder 6, and it is possible to reliably improve the processing efficiency and the dehydration efficiency of the dehydrator 1.

Further, in this embodiment, since the window 61 for visually recognizing the object S to be filtered from the outside supplied to the inside of the perforated cylinder 56 is formed in the upper part of the charging device 1, unlike the conventional case. Since the insertion state (supply state) of the object S to be filtered with respect to the charging device 50 can be visually confirmed, the state of the object S to be filtered can be properly maintained.

Furthermore, since the charging device 1 of this embodiment does not require expensive auxiliary equipment such as a pump, the economical burden can be surely reduced as compared with the case where a conventional pump is used.

Next, the operation of the rear filter cylinder 6B of the dehydrator 1 of the present embodiment having the above-mentioned structure will be described.

FIGS. 4 to 8 show a standby state in which a dehydration operation capable of dehydrating the object to be filtered is possible.

As shown in FIG. 5 and FIG.
In the standby state where the dehydration of the auxiliary reciprocating cylinder 32 can be performed, the output shaft 32a of the auxiliary reciprocating cylinder 32 is locked in the retracted position located at the retracted position, and the auxiliary reciprocating cylinder 3
Front movable plate 29 to which the tip of the second output shaft 32a is attached
Is abutted so that the flange member 21 located on the discharge side OS of the front filter cylinder 6 is in close contact with the attached mounting member 22.

The output shaft 36 of the main reciprocating cylinder 36
a is locked in the forward position, which is located at the forward position, and moves the rear movable plate 30 that operates in conjunction with the output shaft 36a of the main reciprocating cylinder 36 so as to approach the front movable plate 29. Each ring plate which holds the separation distance L between the front movable plate 29 and the rear movable plate 30 at a predetermined size and constitutes the filter medium 20 which is arranged between the front movable plate 29 and the rear movable plate 30. 24 and the disc springs 28 are brought into contact with each other to close the filter medium 20, and a minute gap G through which the filtrate E passes is formed between the two ring plates 24 adjacent to each other. Is being done. The gap G between the ring plates 24 can be adjusted by controlling the forward position of the output shaft 36a of the main reciprocating cylinder 36.

Further, the guide ring 31 and the discharge ring 4
1 is positioned so as to face the outer peripheral surface near the discharge end of the spiral conveyor 12 in association with the operation of the output shaft 36a of the main reciprocating cylinder 36.

Next, the adjustment of the gap G between the ring plates 24 constituting the filter medium 20 will be further described.

In this embodiment, the main reciprocating cylinder 3
When the output shaft 36a of No. 6 is positioned at the most advanced position, the disc spring 28 is moved against the spring force (elastic force) of the disc spring 28 arranged between the ring plates 24. The disc spring 28 is most compressed in the thickness direction, and the disc spring 28 is housed in the housing recess 43 provided in the ring plate 24, and the two ring plates 24 adjacent to each other can be brought into close contact with each other. FIG. 9 shows a state where the two ring plates 24 adjacent to each other are in close contact with each other.

The output shaft 36 of the main reciprocating cylinder 36
When a is not positioned at the forward end, the gap forming member 27
By the spring force of the disc spring 28 as described above, a gap GC (G = DC) of an arbitrary size having a substantially uniform size can be formed between the two ring plates 24. The maximum value of the gap G between the two ring plates 24 is determined by the height of the disc spring 28 in the free state, and the adjustment range of the gap G is determined by the spring force of the disc spring 28 and the disc spring. It is determined by the amount of expansion and contraction (deformation amount) of the spring 28 in the axial direction. FIG. 10 shows a closed state in which the two ring plates 24 are separated from each other.

That is, according to the rear filter cylinder 6B of the dehydrator 1 of this embodiment, the output shaft 3 of the main reciprocating cylinder 36 which constitutes a part of the filter medium opening / closing means 37 and the interval adjusting means 38.
By controlling the position of 6a, the two rings adjacent to each other in the closed state of the ring plates 24 constituting the filter medium 20 are made to correspond to the size of the solid contained in the object S to be filtered. Since the gap G between the plates 24 can be adjusted (variable), dehydration of the object S to be filtered can be optimized, and one filter medium 20 can be applied to a wide variety of objects S to be filtered. You can

The adjustment of the gap G between the ring plates 24 in the closed state by the main reciprocating cylinder 36, which constitutes a part of the space adjusting means 38, is adjusted in advance in accordance with the body S to be filtered. Alternatively, it may be adjusted while the dehydrator 1 is in operation, and it can be selected depending on the usage situation.

Next, the dehydration of the body S to be filtered by the dehydrator 1 of this embodiment will be described.

When the dehydrator 1 of this embodiment is operated, the driving force of the drive motor 17 is transmitted to the spiral conveyor 12 via the speed reducer 15, and the spiral conveyor 12 starts rotating at a desired rotation speed. Then, a desired object S to be filtered is supplied from the charging device 1 arranged above the charging hopper 10 shown on the right side in FIG. Then, the object to be filtered S is gradually filled with the spiral conveyor 12 along the surface of the spiral conveyor 12 while being transferred from the right side to the left side in the inside of the filtration cylinder 6 in FIGS. 4 and 5. It is pressed (moves under pressure) and passes through. And
The object to be filtered S passes through the front filter cylinder 6A having the filter material 7 located on the supply side IS, and the filter material 7 of the front filter cylinder 6A is passed through.
The solution is gravity filtered through a sieve surface (not shown) of the above and concentrated.

Then, the concentrated substance S to be filtered is closed by the filter medium opening / closing means 37 and the gap adjusting means 38 of the rear filtration cylinder 6B located on the discharge side OS in accordance with the solid size of the substance S to be filtered. Filter medium 2 having a distance G adjusted at
While passing through the inside of each ring plate 24 forming 0 toward the discharge side OS while being gradually pressurized, the liquid content is dehydrated due to a change in volume, and a dehydrated filter cake K called a dehydrated cake is obtained. After being guided to the discharge position by the guide ring 31, it falls toward the upper surface of the gantry 2 by the inclined surface 41b of the discharge ring 41, and then is stored in the storage container 9.

The filtrate E, which is the liquid component separated from the object S to be filtered by the filtration cylinder 6, passes from the inside of the filtration cylinder 6 toward the surface, and then from the outer peripheral surface of the filtration cylinder 6 to the upper surface of the gantry 2. It is designed to be dropped onto a filtrate receiver 5 arranged in the above, and then delivered to a recovery tank (not shown) or the like via a filtrate discharge port 8.

Next, cleaning of the filter cylinder 6 in the dehydrator 1 of this embodiment will be described with reference to FIG. The front filter cylinder 6A, which constitutes a part of the filter cylinder 6 of the dehydrator 1 of the present embodiment, is used for gravity filtration of the body S to be filtered, and the filter material 7 of the front filter cylinder 6A is clogged. Since the filter material 7 can be easily washed, there is almost no
The cleaning of the filter medium 7 of 1 is omitted, and only the cleaning of the rear filter cylinder 6B filter medium 20 will be described.

FIG. 11 is a view similar to FIG. 6 for explaining the cleaning state of the filter material of the rear filter cylinder.

As shown in FIG. 11, the dehydrator 1 of this embodiment
In the cleaning state in which the filter medium 20 of the rear filter cylinder 6B can be cleaned, the output shaft 32a of the auxiliary reciprocating cylinder 32 which constitutes a part of the filter medium opening / closing means 37 and the interval adjusting means 38.
Is locked in the forward position, which is located in the forward position,
The front movable plate 29 to which the tip of the output shaft 32a of the auxiliary reciprocating cylinder 32 is attached is in close contact with the attachment member 22 to which the flange member 21 located on the discharge side OS of the front filtration cylinder 6A is attached. Is abutted against.

The output shaft 36a of the main reciprocating cylinder 36, which constitutes a part of the filter medium opening / closing means 37 and the interval adjusting means 38, is locked in the retracted state in the retracted position, and the main reciprocating cylinder 36 is locked. The rear movable plate 30 that operates in conjunction with the output shaft 36a is moved so as to be largely separated from the front movable plate 29 (L = Lmax), and the front movable plate 29 is moved.
The ring plates 24 and the disc springs 28 constituting the filter medium 20 disposed between the rear movable plate 30 and the rear movable plate 30 are separated from each other to open the filter medium 20. Further, the guide ring 31 and the discharge ring 41 are interlocked with the output shaft 36a of the main reciprocating cylinder 36, and the spiral conveyor 12
Is located on the discharge side OS from the left end.

That is, in the cleaning state in which the filter medium 20 of the rear filter cylinder 6B of the dehydrator 1 of this embodiment can be cleaned,
By operating the filter medium opening / closing means 37 to increase the separation distance L between the front movable plate 29 and the rear movable plate 30, the filter medium 20 of the rear filter cylinder 6B is configured without disassembling the rear filter cylinder 6B. Ring plate 24 and each disc spring 2
Since it is possible to disassemble the filter 8 in a state of being axially movable while being supported by the fixed rods 26, it is possible to easily wash the filter member 20 of the rear filter cylinder 6B when it is clogged. Therefore, it is possible to surely improve the workability of the cleaning and surely reduce the labor and time required for the cleaning work.

Further, according to the dehydrator 1 of the present embodiment, the output shaft 32a of the auxiliary reciprocating cylinder 32, which constitutes a part of the filter medium opening / closing means 37 and the interval adjusting means 38, is locked in the retracted position in the retracted position. In addition, by locking the output shaft 36a of the main reciprocating cylinder 36 in the retracted position located at the retracted position, only the filter medium 20 of the rear filter cylinder 6B is kept in the state where the closed state of the filter medium 20 of the rear filter cylinder 6B is maintained. Can be moved to the discharge side OS to expose a part of the spiral conveyor 12 surrounded by the rear filter cylinder 6B to the outside, and the spiral conveyor 12 can be easily washed. FIG. 12 shows a screw cleaning state in which the spiral conveyor 12 can be cleaned.

Furthermore, according to the dehydrator 1 of this embodiment, the output shafts 32a of the auxiliary reciprocating cylinder 32 and the main reciprocating cylinder 36, which constitute a part of the filter medium opening / closing means 37 and the interval adjusting means 38, By operating 36a so as to alternately repeat the cleaning state shown in FIG. 11 and the screw cleaning state shown in FIG. 12, the filter cake K that is firmly solidified at the end of the discharge side OS of the spiral conveyor 12 is easily loosened. You can also

Therefore, in the dehydrator 1 of this embodiment, washing can be easily performed without disassembling,
A great amount of labor and time required for cleaning can be surely reduced, and the gaps G between the ring plates 24 constituting the filter medium 20 of the rear filter cylinder 6B in the closed state are adjustable (variable). Therefore, one filter medium 20 can be optimized for a wide variety of objects S to be filtered.

FIGS. 13 to 15 show a second embodiment of the dehydrator, FIG. 13 is a plan view showing a ring plate which constitutes the filter medium of the rear filter cylinder, and FIG. 14 is an arrangement of the ring plate. It is explanatory drawing which looked at the state from the axial direction, and FIG. 15 is a longitudinal cross-sectional view taken along the line AA of FIG.

In this embodiment, no storage recess 43 is formed in each ring plate 24A constituting the filter medium 20A. As shown in FIG. The mounting hole 25a is the ring plate 24.
They are arranged at equal distances from the axis of A at equal angles. In this ring plate 24A, as shown in FIGS. 14 and 15, the phase of the mounting holes 25a of each two ring plates 24A adjacent to each other with respect to the six fixing rods 26 is changed by 60 degrees. The plate springs 28 are arranged so as to be alternately laminated, and the disc springs 28 as elastic members that form the gap forming member 27 are arranged between the two adjacent ring plates 24A in the same phase. This allows
Each two ring plates 24A that are adjacent to each other are formed so as to be in close contact with each other. Other configurations are the same as those of the dehydrator 1 of the first embodiment described above.

With such a structure, the dehydrator of this embodiment can achieve the same effects as those of the first embodiment described above.

The feeding device 50 according to the present invention is not limited to the dehydrator 1 called the screw press described above,
It can be used for various dehydrators and various solid-liquid separation devices not shown.

Further, the present invention is not limited to the above-mentioned embodiment, but can be modified as necessary.

[0096]

As described above, according to the dehydrator of the present invention, it is possible to easily wash the filter medium,
It has an extremely excellent effect that one filter medium can be used for a wide variety of objects to be filtered.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a main part of an embodiment of a charging device according to the present invention.

FIG. 2 is a partially cut side view of a main part of an embodiment of a charging device according to the present invention.

FIG. 3 is a plan view of a main part of an embodiment of a charging device according to the present invention.

FIG. 4 is a front view showing a main part in a standby state of the entire configuration of a first embodiment of a dehydrator using the charging device according to the present invention.

FIG. 5 is a partially cutaway plan view showing a main part in a standby state of the entire configuration of a first embodiment of a dehydrator using the charging device according to the present invention.

FIG. 6 is a partially cutaway enlarged view showing the vicinity of a rear filter cylinder in a standby state of a first embodiment of a dehydrator using a charging device according to the present invention.

FIG. 7 is a plan view showing a ring plate constituting the filter medium of the rear filter cylinder in the standby state of the first embodiment of the dehydrator using the charging device according to the present invention.

FIG. 8 is an explanatory diagram showing a configuration of a rear filter cylinder in a standby state of a first embodiment of a dehydrator using the charging device according to the present invention.

FIG. 9 is an explanatory view showing a state in which the ring plates are in close contact with each other when the filter medium of the rear filter cylinder of the first embodiment of the dehydrator using the charging device according to the present invention is closed.

FIG. 10 shows a first dehydrator using the charging device according to the present invention.
Explanatory drawing which shows the closed state of the filter medium in which the gap of each ring plate in the closed state of the filter medium of the rear filter cylinder of the example is controlled.

FIG. 11 is a first dehydrator using the charging device according to the present invention.
The figure similar to FIG. 3 explaining the washing | cleaning state of the rear filter cylinder of an Example.

FIG. 12 is a first dehydrator using the charging device according to the present invention.
The figure similar to FIG. 3 explaining the screw washing state of the rear filter cylinder of an Example.

FIG. 13 is a second dehydrator using the charging device according to the present invention.
The top view which shows the ring plate which comprises the filter material of the rear filter cylinder of an Example.

FIG. 14 is a second dehydrator using the charging device according to the present invention.
Explanatory drawing which looked at the arrangement | positioning state of the ring plate which comprises the filter material of the rear filtration cylinder of an Example from the axial direction.

15 is a vertical sectional view taken along the line AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dehydrator 50 Feeding device 51 Case body 56 Perforated cylinder 57 Press-fitting screw 60 Feeding hole 61 Window 62 Drive motor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeharu Era 13-5 7 Nishi-Shinjuku, Shinjuku-ku, Tokyo Inside Conti Inc. (72) Inventor Takao Shibata 14-5-5 Shinjuku, Shinjuku-ku, Tokyo Within Co-Plant Co., Ltd.

Claims (2)

[Claims] 1. A case body, which is formed into a tubular shape and into which a body to be filtered which is a mixture of liquid and solid is supplied, and a case body which is arranged inside the case body and which is rotated by a driving force of a drive motor. An injection device which is drivable and has a press-in screw capable of pushing the object to be filtered into a dehydrator under atmospheric pressure. 2. The porous body capable of self-weight dehydration of the object to be filtered is provided inside the case body, and the press-fitting screw is provided inside the porous body. The described dosing device.