JP3343597B2 - Mud dewatering machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sludge, architectural sludge and mud containing fine particles having good hydrophilicity (hereinafter referred to simply as mud) which accumulate on the seabed, rivers, lakes and ponds, etc. It relates to a dehydrator for forced dehydration as it is, volume reduction and sedimentation.

[0002]

2. Description of the Related Art Conventionally, as a machine for forcibly dewatering a muddy material, a filter press, a belt press,
Although there are a screw press, a centrifugal separation method and the like, these have the following problems.

[0003] If the sludge contains small objects such as nails, glass pieces, empty cans, and stones, dehydration cannot be performed, and pretreatment equipment for the small objects is indispensable.

[0004] b. Fine particles or a mud having a high fluidity cannot be dehydrated, and requires a solidification treatment as a pretreatment.

[0005] c Due to the increase in viscosity due to the solidification treatment, the dewatering efficiency is extremely reduced, which takes time and increases the treatment cost. In addition, troubles such as clogging are likely to occur.

D The conventional apparatus generally has a complicated structure and a large number of peripheral devices, and its dewatering ability is not very good in spite of the high equipment cost.

An object of the present invention is to eliminate the above-mentioned conventional problems.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a dewatering case having a cylindrical shape whose axis extends horizontally and a peripheral wall formed of a metal screen capable of draining water, and a lid on one end surface of the cylindrical dewatering case. And a drive unit for reciprocating the press member in the case. Te, the opening of the screen constituting the peripheral wall of the dewatering case is composed of a large number of slots extending axially, the upper surface of the dewatering case, closing
It is freely configured and provides a charging section for charging mud.
Further, the present invention relates to a mud-like dewatering machine characterized in that an openable discharge part for discharging dehydration residues is provided on the other end face of the cylindrical dewatering case. In the dehydrator, the
The input section on the upper surface of the dehydration case is a guide for the dehydration case.
The two ends are fitted into the groove in a rubbing manner,
It shall be slidable in the axial direction.
Can be. Further, the present invention is a double-type dehydrator in which a plurality of the dehydrators are arranged in parallel in a direction orthogonal to the axial direction, wherein each of the dehydrators includes the driving device.
The present invention also relates to a double-type dehydrator characterized by comprising a common hopper capable of supplying a muddy substance to each of the input sections of the plurality of dehydrators.

[0009]

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

The dehydrator of the present invention includes a single type and a double type. One example of the single type is schematically shown in plan, side and rear views in FIGS.

As is apparent from FIGS. 1 to 3, the dewatering case 1 is cylindrical and is installed horizontally, and is disposed on the upper, lower, left and right side surfaces and the rear surface, and has screen panels 1a, 1b, 1c, 1d,
From 1e, it is assembled in a cylindrical shape having a short sectional shape. The cross-sectional shape of the dewatering case 1 is arbitrary such as a polygonal circle, an oval (including an ellipse).

The dewatering case 1 has an open front surface, and a press member 2 reciprocally movable in the front-rear direction is slidably fitted into the case 1 through this front opening, and is stored and installed in a watertight manner. I have. The press member 2 functions as a lid member that closes the front surface of the dewatering case 1 when located on the front surface of the case as shown in FIGS. Case 1 above
A drive device for reciprocating the press member 2, for example, a hydraulic cylinder 3 is provided in front of the front surface of the press member 2.

In order to allow the sludge to be treated to be put into the dewatering case 1, the screen panel 1a on the upper surface of the case 1 is moved from the closed position shown in FIG. 1 (plan view) to the open position shown in FIG. In the meantime, the drive device (shown in a double form to be described later) can be operated to slide. FIG. 4 is a view for explaining the principle of the sliding movement of the panel 1a.
Screen panel 1c of the right side, on the 1d crosspiece 1c _1, 1
d ₁ are fitted into the guide grooves 4 and 4 in a sliding manner,
Based on this sliding fit, it is possible to slide along the guide grooves 4, 4 while maintaining water tightness. Further, the sliding fit can sufficiently withstand the pressurized dehydration pressure.

In order to discharge the dewatered residue from the dewatering case 1, the rear screen panel 1e is slidable upward from the closed position in FIG. 2 (side view). The application of the driving means and the sliding movement principle
There is no substantial difference from the screen panel 1a on the upper surface. Incidentally, as the driving device, a telescopic type cylinder can be used as shown in the case of the double type described later.

As a means for opening and closing the upper surface and the rear surface of the dewatering case 1, a rotary type may be adopted instead of the slide system shown in the figure. In the case of a rotary type, an appropriate restraining means for restraining in a closed state is applied.

FIGS. 5 and 6 show details of the screen section 5 of the screen panels 1a to 1e. Screen part 5
Is composed of a number of metal wires 7 arranged in parallel via a slot 6 and a metal support rod 8 which connects and integrates these wires 7 on the outer surface side in a parallel state, The rod 8 is fixed to the wire 7 by applying a welding means in a state of being arranged in a direction crossing the wire 7 group. Usually, a plurality of the rods 8 are used, and a wide interval is provided between the rods 8 so as not to lower the drainage function of the screen.

A slot 6 formed between the wires 7, 7
In order to prevent clogging, it is desirable that the shape of the opening gradually increases from the inside to the outside of the panel as shown in FIG. 6, and the slot 6 having such a shape is It can be formed by using a wire 7 having a cross-sectional shape such as a triangular cross-section or other trapezoidal shape as shown in the figure.

The opening width D ₁ (see FIG. 6) of the slot 6 is usually appropriately selected from the range of about 0.025 to 1 mm depending on the properties of the mud to be treated. Opening width D ₁ is 0.
If it does not reach 025 mm, the dehydration performance will be significantly reduced, and if it exceeds 1 mm, it will be difficult to separate solid components, especially earth and sand, from the muddy material, which is not preferable. On the other hand, the width D _{2 of the} wire 7 (see FIG. 6) is 1 to
It is appropriately selected and determined depending from the range of about 4mm to such opening width D ₁ of the slot 6. If it does not reach 1 mm, there is an anxiety in strength, and if it exceeds 4 mm, the aperture ratio of the screen decreases and the dewatering performance deteriorates.

The screen panel includes such a screen portion 5, and a frame (not shown) made of the same material or a different material is usually fixed around the screen portion 5. By providing the frame, the dewatering case 1 can be easily assembled, and can be assembled and dismantled freely.

The screen panels 1a to 1d constituting the upper, lower, left and right sides of the dewatering case 1 are provided with slots 6 (FIG. 5).
6) must be extended in the front-rear direction, that is, the direction in which the press member 2 reciprocates. For example, when the slot 6 extends in the left-right direction, that is, in the direction crossing the reciprocating direction of the press member 2, the wire 7 forming the slot 6 includes the solid component ( (E.g., earth and sand), hinders movement, causes clogging, and causes solids to flow out of the dewatering case. Such a problem can be eliminated by extending the slot 6 in the moving direction of the press member 2.

When dewatering mud using the dewatering machine of the present invention, first, a screen panel 1a is actuated by a driving device (not shown) on the upper surface of the dewatering case 1.
Sliding from the closed position in FIG. 1 to the open position in FIG.
Then, through the upper surface of the dewatering case 1 opened by this movement, the mud 9 to be treated is thrown into the inside thereof by applying a known appropriate throwing means, and after throwing, the panel 1a is moved from the open position to the closed position. It is returned and the mud is ready for dewatering.

In this state, the driving device 3 is operated to move the press member 2 toward the rear side at first slowly and thereafter gradually increasing the speed. The situation at the time of this movement is shown in FIG. 8 (the screen panel 1a on the upper surface is omitted), and the mud 9 in the dewatering case 1 is pressurized as the press member 2 moves. The water in the object 9 is quickly and vigorously discharged to the outside through the slots 6 of the screen panels 1a to 1e constituting the case 1. On the other hand, the solid component in the mud 9 is pressed and moved in the front-rear direction in the dewatering case 1, and the upper, lower, left and right screen panels 1 a to 1 b are arranged so that the pressing movement direction and the extending direction of the slot 6 are the same. Since 1d is installed, the solid component moves smoothly along the slot 6, so that clogging is less likely to occur, the drainage performance can be maintained stably and reliably for a long time, and the pressure dehydration of mud is efficiently performed. Can be done The dewatering case 1 is formed of a metal screen panel and is of a pressure dehydration type using a pressing member 2, so that nails, glass fragments,
Even in the case where small objects such as empty cans and stones are included, the pressure dehydration treatment can be performed without any trouble without the need for pretreatment.

After the pressurized dewatering operation is completed as indicated by the phantom line in FIG. 8, the residual stress is preferably removed from the dewatered residue by slightly retreating the press member 2, and then the screen on the rear surface of the dewatering case 1 is removed. The panel 1e is slid upward as shown by a virtual line in FIG. 2, and the rear surface of the dewatering case 1 is opened. In this state, the driving device 3 is operated to press the pressing member 2.
Is further advanced, and in this advance, the dewatered residue in the case is extruded and discharged to the outside.

After the dewatered residue is extruded and discharged out of the case 1, the rear screen panel 1e is returned to the initial closed position, and the press member 2 is returned to the original front position. Can be prepared.

FIG. 9 shows an embodiment of the present invention of a double type. A single type of dehydrator of the present invention is used by being assembled in parallel. They are interconnected and integrated via an I-beam 10.

[0026] The left and top portions of the outer dewatering casing 1 at the right end, the driving device for example, a hydraulic cylinder 11, 11 for top screen panel 1a closing operations of dewatering casing 1 is installed, the piston rod of the cylinder 11, 11 of the looped around a support bar between the tip, the front end of the top screen panel 1a of the dewatering case 1 is attached and fixed. Therefore, by operating the hydraulic cylinders 11, 11, the upper screen panel 1a of each dehydrating case 1 can be simultaneously opened and closed simultaneously.

A drive installation for opening and closing the rear screen panel 1e, for example, hydraulic cylinders 12, 12 is installed vertically at the rear end outside the dewatering cases 1, 1 at the left end and the right end. 12 piston rods 12
a, the support bar 13 bridged between the tips of the 12a,
The upper end of the rear screen panel 1e of each dewatering case 1 is mounted and fixed, and the hydraulic cylinders 12, 12 are shown as telescopic type in the figure. The opening and closing operations of the rear screen panel 1e of each dewatering case 1 can be performed simultaneously by operating the hydraulic cylinders 12, 12.

The other structure is substantially the same as the single type shown in FIGS. 1 to 3, and the same effects as those of the single type can be obtained in the case of the double type. Of course, the double type can provide a greater processing capacity than the single type.

As shown in FIG. 10, when the common type hoppers 13 are installed above the dewatering cases 1,... 9 can be provided with a guide portion 14 having a triangular cross section.

[0030]

According to the present invention, the following effects can be obtained.

Dehydration treatment is possible even when the sludge contains contaminants such as nails, glass pieces, empty cans, stones, etc. Installation of equipment for performing such pretreatment can be omitted.

(2) Dewatering treatment is possible even for fine particles or mud having a high fluidity, so that the solidification treatment as a pretreatment can be omitted, and problems associated with an increase in viscosity due to the solidification treatment can be eliminated.

(C) Since the structure is simple and there is no need to install peripheral equipment such as pretreatment equipment, the equipment cost is low, and the processing capacity can be reduced since the equipment cost is low, but the processing cost can be reduced. D Since the top of the dewatering case can be opened, press
Keep the components in their original position and
Can be loaded, and after loading, remove the top of the dewatering case.
Once closed, you are ready for dehydration. E The upper surface of the dehydration case is a guide for the dehydration case.
The two ends are fitted into the groove in a rubbing manner,
Because it is configured to be slidable in the axial direction,
It can be sufficiently resistant to water pressure.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view schematically showing a simple embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a diagram illustrating the principle of sliding movement of the upper screen panel.

FIG. 5 is a detailed view of a screen portion of the screen panel.

FIG. 6 is a detailed view of a slot portion of the screen unit.

FIG. 7 is a plan view showing a state where an upper screen panel is opened.

FIG. 8 is a plan view showing the state of the muddy material under pressure dehydration treatment, omitting the upper screen panel.

FIG. 9 is a perspective view showing an example of a multiple-type embodiment of the present invention.

FIG. 10 is an explanatory diagram showing a state of supplying mud to the dewatering case in a double type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dehydration case 2 Press member 3 Hydraulic cylinder 4 Concave groove 5 Screen part 6 Slot 7 Metal wire 8 Support rod 9 Muddy material 10 I-shaped steel 11 Hydraulic cylinder 12 Hydraulic cylinder 13 Hopper 14 Guide part

Claims (3)

(57) [Claims] 1. A dewatering case having a tubular shape whose axis extends horizontally and a peripheral wall surface of which is formed of a metal screen capable of being drained, and a lid portion on one end surface of the cylindrical dewatering case. And a driving device for reciprocating the press member in the case, comprising: a press member capable of reciprocating in the axial direction; and a driving device for reciprocating the press member in the case. The opening of the screen is composed of a number of slots extending in the axial direction, and the upper surface of the dehydration case is configured to be openable and closable to throw mud.
A mud-like dewatering machine characterized by comprising an input section for inputting, and an openable discharge section for discharging dehydration residues on the other end face of the cylindrical dehydrating case. 2. The charging section on the upper surface of the dewatering case,
Both ends are rubbed into the guide groove of the dewatering case.
Is configured to be slidable in the axial direction by
The dewatering of the mud according to claim 1, wherein
Machine. 3. A double-type dehydrator in which a plurality of the dehydrators according to claim 1 or 2 are arranged in parallel in a direction orthogonal to the axial direction, wherein each of the dehydrators includes the driving device. And a shared hopper capable of introducing muddy material into each of the input sections of the plurality of dehydrators.