JPH0910800A - Dehydration apparatus of muddy substrate - Google Patents

Abstract

PURPOSE: To effectively and almost continuously perform the dehydration treatment of a muddy substance. CONSTITUTION: Dehydration process parts A, B consisting of a dehydration case 1 capable of being filled with a muddy substance X, a filling device 2 sending the muddy substance X by a piston pump 14 to allow the same to flow in the dehydration case 1, the emitting part 26 of the filling device 2, a compression device, a discharge device and a vibrator are provided and a moving mechanism 6 capable of relatively moving the dehydration case 1 so as to circulate the same in the dehydration process parts A, B is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dewatering device for sludge.

[0002]

2. Description of the Related Art For example, in an iron mill or the like, mud matter that has flowed out of a storage yard for iron ore, coke, etc. due to rainfall, etc. From the viewpoint of, it is being reused as a raw material.

[0003] Conventionally, the above-mentioned mud made of fine powder such as iron ore and coke is taken out of the gutter or sedimentation tank by construction equipment such as a power shovel, a backhoe or the like and put on a site for sun drying. It was sprayed and dried in the sun until the water content could be reused as a raw material.

[0004]

[Problems to be Solved by the Invention] In the conventional method for dehydrating mud made of fine powder such as iron ore and coke, which has been introduced above, a large amount of labor and a vast site for sun drying are required. A method and apparatus for mechanical dewatering and drying are required because they are necessary and have disadvantages such as that the processing time is considerably long.

On the other hand, as a technique for dehydrating mud in other industrial fields, a method for dehydrating mud using a machine such as a filter press, a belt press, a screw press or a centrifuge is generally used. Known to. However, with these techniques, it is difficult to dehydrate the sludge-like muddy material containing impurities such as pebbles and containing several tens of percent of water to a desired water content (about 10% or less).

Further, the prior art applying a dehydration method by squeezing a mud-like substance put in a container having a screen (metal rods having a substantially triangular cross section arranged in parallel with a slight gap) It is disclosed in Kaihei 6-254600. This dehydration method can be applied to dehydration of mud having the above-mentioned properties, but a) a complicated mechanism is required for supply and dehydration of mud, b) constant mud It is not suitable for treating a large amount of mud because it is supplied to the device in units of amount and dehydrated, and c) clogging of filters and screens occurs, and labor and cost such as cleaning are required. Inconvenience occurs.

The present invention has been made in order to solve the above-mentioned conventional inconvenience, and an object thereof is to provide a mud matter dehydrator capable of effectively and substantially continuously dehydrating mud matter.

[0008]

In order to achieve the above object, a method and apparatus for dehydrating mud matter according to the present invention include a screen capable of separating water from the mud matter around the screen (necessarily equipped with a screen on the entire circumference). The same shall apply to the following), a dewatering case equipped with a dewatering case, a piston pump for pressure-feeding the mud, and an inflow means for guiding the mud into the dewatering case. A pressing device equipped with a hydraulic cylinder that can press the filled mud, an extruded body that is provided at a position where the mud can be pushed out of the dehydration case, and a movement that enables the extruded body to reciprocate in the dehydration case direction. A discharging device having a means, a vibrating device having a vibration mechanism capable of vibrating the dehydration case, and the dehydration case,
The filling device, the squeezing device, the discharging device, and the vibrating device are equipped with a moving mechanism capable of causing relative movement so as to engage in this order.

According to a second aspect of the present invention, the dehydrating case has a substantially frustoconical inner cylinder whose side surface is formed by the above-mentioned screen and whose upper end portion has a large diameter and whose lower end portion has a small diameter. And a cylindrical outer cylinder constituted by, the inner cylinder is inside the outer cylinder, the central axis is common, and
It is preferable to use a structure in which the structure is supported so as to be reciprocally movable in the central axis direction.

According to a third aspect of the present invention, the dehydration case is equipped with four units at equal intervals on the same circumference, and the filling device,
The squeezing device, the discharging device, and the vibrating device are equipped at equal intervals so that the engaging portions with the dehydration case are located on the circumference, and the moving mechanism further includes the dehydration case on the circumference. It is preferable that the rotating means is configured to be rotatable about the central axis.

[0011]

The mud matter dehydrator of the present invention having the above-described structure has the following functions.

(1) According to the mud matter dewatering device of the first aspect, the dewatering case, the filling device, the pressing device, the discharging device,
Equipped with a vibrating device and a moving mechanism, the dehydrating case is moved by the moving mechanism, and the filling device, the squeezing device, the discharging device, and the vibrating device are engaged in this order to perform each process, thereby effectively dewatering mud. Processing becomes possible.

That is, by engaging the dewatering case having the screen capable of separating water from the mud with the filling device, the mud can be filled in the dewatering case, and further, the pressure of the piston pump of the filling device can be filled. As a result, the mud matter in the dehydration case is pressurized, so that a considerable amount of dehydration treatment can be performed with such a filling device. Next, by engaging the dehydrating case and the squeezing device in this state, and pressing the mud-like substance filled in the dehydrating case with a hydraulic cylinder, the mud-like substance in the dehydrating case can be further dehydrated, The efficiency can be increased. Further, next, by engaging with the discharging device and moving the extruded body in the direction of the sludge in the dehydration case, the sludge after the dehydration can be pushed out of the dehydration case. With the above operation, the mud can be dehydrated and taken out. Further, the dewatering case from which the dewatered mud is taken out is engaged with the vibrating device and vibrated, so that the mud stuck to and left on the solid-liquid separation screen can be taken out. This can prevent clogging of the screen.

Further, if a plurality of dehydrating cases are provided, the processing in each device can be performed simultaneously by circulatingly engaging so that the next one can be processed immediately after the processing in each device is completed. A substantially continuous dehydration process becomes possible.

The mud matter can be dehydrated without a vibration device. However, such a solid-liquid separation screen is apt to be clogged, and when the screen of the dehydration case is clogged, it is necessary to stop the above-mentioned substantially continuous operation operation and clean the screen for a long time. I can't drive. By providing a vibrating device like this device, such inconvenience can be reduced.

According to a second aspect of the present invention, there is provided a dewatering device for dewatering mud, wherein the dewatering case has a substantially frustoconical inner cylinder whose side faces are the screen and a cylindrical side face is the screen. Because it has a structure that overlaps the outer cylinder of the shape,
By filling the space between the outer cylinder and the inner cylinder with mud and squeezing it, water can be filtered to the outside of the outer cylinder and the inside of the inner cylinder to dehydrate the mud. Further, since the dehydration case is cylindrical and conical, the pressure of the mud matter is substantially evenly applied to the side surface of the dehydration case, and the internal pressure can be made relatively high.

Further, since the inner cylinder has a tapered shape with a large upper end and a small lower end, it can be moved upward, and the upward movement of the inner cylinder can release the compaction of the mud-like matter. After that, the extruded body of the discharge device pushes the dewatered mud material downward, so that it can be easily discharged.
Usually, when dewatering is performed by squeezing and filtering a mud material packed in a case with a certain volume, the mud material is compacted in the case, and it tends to be difficult to remove the mud material from the case. However, this dewatering apparatus reduces the adverse effect.

Further, as described above, since the space filled with the mud is a substantially hollow cylindrical shape, and the outer surface and the inner surface thereof are constituted by the solid-liquid separation screen, each part of the mud is To the screen can be relatively short,
It is easy to fit within a certain drainage distance. Here, the drainage distance means the distance from the screen that can be dehydrated to a predetermined water content within a predetermined time.

(3) According to the mud matter dewatering device of the third aspect, the dewatering cases are four units installed at equal intervals on the same circumference, and the filling device and the squeezing device are used. The device, the discharging device, and the vibrating device are provided at equal intervals so that the engaging portions with the dehydration case are located on the circumference, and the moving mechanism further includes a central axis of the circumference. Since the group of dewatering cases is rotatable around the center, the dewatering process can be performed substantially continuously by a relatively simple mechanism without interrupting the operation of each device. That is, the four dehydration cases are engaged with the respective devices to perform the respective processes at the same time, and after the time for completing all the processes elapses, the dehydration cases are rotated by 90 ° by the moving mechanism to move to the next device. To perform each processing. By performing such an operation continuously, it becomes possible to dehydrate the mud substance substantially continuously.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment embodying the dewatering device of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing the present embodiment. As shown in FIG. 1, the present apparatus is mainly composed of four (not shown) dehydrating cases 1, a filling device 2 for pumping and filling mud X in the dehydrating cases 1, and dehydrating process sections A and B. , And the moving mechanism 6 for moving the dehydration case 1 in the dehydration process sections A and B. Although the dehydration process units A and B are not shown in FIG. 1,
The filling unit 2 includes a discharge unit 26, a squeezing device 3, a discharging device 4, and a vibrating device 5. In addition, the dehydration process sections A and B are arranged in parallel in two
I provided the base. Hereinafter, each part will be described.

As shown in FIG. 1, the filling device 2 gives a reciprocating motion to the piston pump 14 by the hydraulic control of the hydraulic device 12, and the reciprocating motion causes the mud X in the hopper 15.
Can be pressure-fed to the dehydration case 1 via the pipe line 18 or the like.
The hydraulic device 12 includes a pump 10, a motor 11 that drives the pump 10, and the like, and includes a piston pump 14 and a pipeline 13.
Linked. The hopper 15 is for storing the mud X, and is provided with a motor 16 for stirring the mud X inside. Further, the pipe line 18 is branched into a pipe line 19 and a pipe line 20 via a valve 25 to supply the mud matter X to the dehydration process sections A and B of the two dehydrating apparatuses.

On the other hand, the dewatered mud X'is carried to a predetermined position by a conveyor 21 driven by a motor 22. In addition, the water separated by the dehydration process is the saucer 23
Are collected by and are drained via the conduit 24.

In order to facilitate understanding of the dehydration process units A and B of the present apparatus, a schematic plan view of the dehydration process units is shown in FIG. As shown in FIG. 2, the dewatering process units A and B are provided in the discharging unit 26 and the dewatering case 1 of the filling device 2 that pressure-feeds the mud X in the clockwise direction when viewed from above to fill and pressurize the dewatering case 1. A squeezing device 3 that presses the filled mud material X, a discharge device 4 that takes out the mud material X after the dehydration processing from the dehydration case 1, and a vibration device 5 that applies vibration to the dehydration case 1 are provided. One circle Z
When the dehydrating case 1 rotating above is at the H position, the discharging unit 26 and
The squeezing device 3 at the I position, the discharging device 4 at the J position, and the K
It became possible to engage with the vibration device 5 at the position of (H, I, J, K
Are located at 90 degree intervals). Therefore, the dehydration case 1 makes one turn around each of the devices 26, 3, 4, and 5 in the clockwise direction, so that the primary dehydration by filling and pressurizing the mud X at the position H and the mud at the position I. Secondary dewatering by pressing the material X is performed at the position J to discharge the mud material X ′ after the completion of dewatering, and at the position K, a treatment for removing the residue remaining on the screen of the dewatering case 1. A shaking operation is performed, and a certain amount of mud X can be dehydrated.

Therefore, in the present apparatus, four dehydration cases 1 are provided on the circumference Z at 90 degree intervals, and the moving mechanism 6 rotates the dehydration case 1 located on the circumference Z around the center Y. It is provided so that it can rotate as a shaft and can be stopped at a predetermined position. Therefore, the four dehydration cases 1 are engaged with the respective devices 26, 3, 4, 5 to perform the respective processes at the same time, and after the time for completing all the processes elapses, the dehydration cases 1 are moved by the moving mechanism 6. Is rotated by 90 ° and engaged with the next device to perform respective processing. By performing such an operation continuously,
The substantially continuous dehydration of the mud X can be achieved.

In this apparatus, in order to increase the amount of dehydration treatment, as shown in FIG. 3, two similar dehydration process sections A and B were installed in parallel. In FIG. 3, the main body 30 is
It is a rectangular frame for accommodating and supporting each of the devices 1, 2, 3, 4, 5, 6, and the conveyor 21 includes a discharging device 4
Also, the dewatered mud X ′ taken out from the vibration device 5 is conveyed to a predetermined position. Further, the respective devices 26, 3, 4, 5 may be arranged in the reverse order to the above, and in this case, the dehydration case needs to be rotated and processed in the opposite direction to the above.

Next, the dehydration case 1, the devices 2, 3, 4, 5 of the dehydration process sections A and B and the moving mechanism 6 will be described in detail. To show each of these devices 2 and the like, cross-sectional views taken along the lines CC and DD of FIG. 3 are shown in FIGS. 4 and 5, respectively. Hereinafter, description will be made based on these drawings.

As shown in FIG. 4, four dehydration cases 1 are provided on a case support 31 in which two discs each having a rotatable size inside a main body 30 are horizontally held at predetermined intervals. Also,
The dehydration case 1 includes an outer cylinder 32 and an inner cylinder 3 provided therein.
It was composed of 3. The outer cylinder 32 has a cylindrical screen that can separate water from the mud X, and
Are provided so as to penetrate vertically. On the other hand, the inner cylinder 33 is formed with a screen similar to that described above on the side surface thereof in the shape of a truncated cone whose lower end has a smaller diameter than its upper end. Therefore, the dehydration case 1 has a hollow cylindrical space E having a smaller thickness as it goes downward, and the space E can be filled with the mud matter X. Further, the inner cylinder 33 is provided with a support member 34 therein to maintain the shape of the truncated cone. Furthermore, since the central axis of the inner cylinder 33 is held in common inside the outer cylinder 32, the bracket 3 is attached so as to come into contact with the side surface of the inner cylinder 33 from several places of the outer cylinder 32.
5 was projected. Therefore, the outer cylinder 32 to the inner cylinder 33 cannot move downward, but can move upward.
These dehydration cases 1 and 4 are arranged on the same circumference and 90 times.
It was incorporated into the case support 31 so as to be positioned at intervals. Therefore, each dehydration case 1 can be engaged with each of the devices 26, 3, 4, and 5 by aligning their positions.

As shown in FIG. 4, the discharge part 26 of the filling device 2 comprises a discharge port 36 which is connected to the pipe 20 above the dehydration case 1 and which can be moved up and down, and a screen 37 which is in contact with the bottom of the dehydration case 1. . The discharge port 36 has a trumpet shape, and the inner diameter of the tip is matched with the diameter of the outer cylinder 32 of the dehydration case 1. In addition, a conical adjustment member 38 is provided inside the discharge port 36.
The diameter of the bottom surface of the adjusting portion 38 and the outer diameter of the upper end portion of the inner cylinder 33 of the dehydration case 1 are made to coincide with each other. For this reason, the shape of the tip of the discharge port 36 and the shape of the upper end of the space E in the dehydration case 1 that is filled with the mud X are matched, and the discharge port 36 is lowered into the dehydration case 1 and brought into close contact therewith, thereby smoothing the operation. The mud X can be made to flow into. The screen 37 at the bottom of the dehydration case 1 is similar to the screens on the side surfaces of the outer cylinder 32 and the inner cylinder 33, but is reinforced by ribs or the like to hold the dehydration case 1. Discharge unit 2 having such a structure
According to 6, the discharge port 36 is first lowered and brought into contact with the upper end portion of the dehydration case 1, and then the mud X is pumped toward the discharge port 36 by the piston pump 14, whereby the mud is put into the dehydration case 1. State X can be filled. Also, a considerable amount (about 80% to 90% of the dehydration treatment in this embodiment) can be dehydrated by the supply pressure of the piston pump 14.

As shown in FIG. 4, the squeezing device 3 comprises a hydraulic cylinder 40 above the dewatering case 1 and a screen 41 that abuts on the bottom of the dewatering case 1. This hydraulic cylinder 40 was fixed to the main body 30, and a compression member 42 attached to the tip was provided so as to be able to reciprocate downward. The squeezing member 42 has a hollow columnar shape, and the shape of the tip end surface thereof is matched with the shape of the upper end portion of the space E of the dehydration case 1, and the squeezing member 42 is formed.
The tip of the can be inserted into the dehydration case 1. On the other hand, the screen 41 is similar to the screen 37 of the ejection unit 26. Therefore, the pressing member 42 is lowered into the dehydrating case 1 by the hydraulic cylinder 40 and the mud X is pressed, whereby the mud X filled in the dehydrating case 1 is further dehydrated, and the dewatering ability is increased. Can be improved. After the pressing is completed, the pressing member 42 is pulled up.

As shown in FIG. 5, the discharging device 4 is a discharging cylinder 4 fixed to the main body 30 above the dehydration case 1.
5 and an inner cylinder pushing cylinder 46 fixed to the main body 30 below the dehydration case 1. This discharge cylinder 45
Pushes down the pressing body 47 at the tip thereof, and the dehydration case 1
It is possible to move back and forth until it gets inside. In addition, a plurality of discharge cylinders 45 are provided at equal intervals in order to uniformly press the sludge X ′ according to the shape of the upper end of the dehydration case 1. On the other hand, the inner cylinder pushing cylinder 46 allows the pressing body 48 to move upward and downward from below the dehydration case 1,
The inner cylinder 33 can be pushed upward. As a result, by pushing up the inner cylinder 33 by the inner cylinder pushing cylinder 46, the compacted state of the dewatered mud X'can be alleviated, and the discharge cylinder 45 can further remove the dewatered mud X '. By pressing downward, the compacted mud matter X'can be easily discharged. The mud X'extruded downward is carried out by the conveyor 21 provided below the main body 30.

Although not shown, the vibrating device 5 applies vibration (up and down, rotation, etc.) to the dehydrated case 1 after discharging, and the mud-like matter remaining or adhering to the screens of the outer cylinder 32 and the inner cylinder 33. This is a device for sieving X '. This reduces clogging of the screen and enables continuous operation.

By the above-mentioned devices 26, 3, 4, 5, 4
Each treatment is performed simultaneously on the dehydration case 1 of the base. After all the respective processes are completed, the moving mechanism 6 is operated to rotate the case support 31 by 90 degrees when viewed from above, and each dehydrating case 1 is subjected to the next process. By repeating this operation, the dewatering process of the mud X can be performed substantially continuously.

[0033]

As is apparent from the above description,
The mud matter dehydrator according to the present invention has the following effects.

(1) According to the mud dewatering device of claim 1, the mud dewatering is more effective and quicker than the prior art without the pretreatment such as addition of chemicals. You can That is, the effect of dehydration can be enhanced by providing the secondary dehydration by the pressing device in addition to the primary dehydration by the high pressure supply of the filling device.

Further, by providing a plurality of dehydrating cases and engaging them in a circulating manner so that the next processing can be carried out immediately after the processing in each apparatus is completed, the processing in each apparatus can be carried out at the same time, and the processing can be carried out substantially continuously. Dewatering process becomes possible.

Furthermore, since the screen is prevented from being clogged by the vibrating device, there is no interruption for cleaning or the like, and the substantially continuous dehydration process can be promoted.

(2) According to the mud matter dehydrator of the second aspect, since the dehydration case has a cylindrical shape and a conical shape, the internal pressure is applied to the side surface of the dehydration case substantially uniformly.
This structure has a relatively high internal pressure. Therefore, it is possible to deal with high-pressure pressure dehydration and compression dehydration of a mud-like substance having a high water content.

Further, the tapered inner cylinder having a large upper end is moved upward, and the mud matter after the dehydration treatment is pressed downward by the pressing body of the discharging device, whereby the filled mud matter is squeezed,
It is possible to easily discharge the mud-like matter that is compacted in the case by filtration and is difficult to take out.

Further, since the distance from each part of the mud to the screen can be made relatively short and a certain drainage distance can be easily secured, it is possible to uniformly dehydrate up to a predetermined water content,
It can exert a high dehydrating ability.

(3) According to the mud matter dehydrator of the third aspect, the relatively simple mechanism of rotating the dehydration case allows the dehydration case to be sequentially filled, squeezed, discharged and vibrated. Processing can be performed.

Also, the number of each device for performing each process (4 steps)
Since four dehydration cases are provided corresponding to the above, each device can simultaneously perform each processing. Therefore, the dehydration process can be performed substantially continuously without interrupting the operation of each device.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a dewatering device for a muddy material according to an embodiment of the present invention.

FIG. 2 is a schematic plan view showing the concept of a dehydration process in the mud matter dehydrator of FIG.

FIG. 3 is a schematic plan view showing a dehydration process section equipped in the mud matter dehydrator of FIG. 1.

4 is a cross-sectional view taken along the line C-C of FIG. 3, showing the dehydration step.

5 is a cross-sectional view taken along the line D-D showing the dehydration step of FIG.

[Explanation of symbols]

 1 Dehydration Case 2 Filling Device 3 Squeezing Device 4 Discharging Device 5 Vibration Device 6 Moving Mechanism 12 Hydraulic Device 14 Piston Pump 15 Hopper 21 Conveyor 30 Main Body 31 Case Support 32 Outer Cylinder 33 Inner Cylinder 36 Discharge Port 37/41 Screen 40 Hydraulic Cylinder 45 Cylinder for discharge A / B Dewatering process part XX 'Mud

Claims (3)

[Claims] 1. A dewatering case having a screen capable of separating water from the mud, the piston pump for feeding the mud under pressure, and an inflow means for guiding the mud into the dewatering case. A filling device, a squeezing device equipped with a hydraulic cylinder capable of pressing the mud-like substance filled in the dehydration case, an extruded body provided at a position where the mud-like substance can be extruded from the dehydration case, and an extruded body thereof A discharging device including a moving unit that can reciprocate in the direction of the dehydration case, a vibrating device including a vibration mechanism that can vibrate the dehydration case, the dehydration case, the filling device, and a squeezing device, A device for dehydrating mud, characterized in that a discharging device and a vibrating device are equipped with a moving mechanism capable of causing relative movement so as to engage in this order. 2. The dehydration case has a substantially frustoconical inner cylinder whose side surface is formed by the screen and whose upper end portion is large and whose lower end portion is small, and a cylindrical outer surface whose side surface is formed by the screen. The mud dewatering device according to claim 1, wherein the mud is constituted by a cylinder, and the inner cylinder is supported inside the outer cylinder so that the central axis is common and is reciprocally movable in the central axis direction. . 3. The dehydrating case is equipped with four units at equal intervals on the same circumference, and the filling device, the squeezing device, the discharging device, and the vibrating device each have an engaging portion with the dehydrating case of the circular shape. The mud-like object according to claim 1 or 2, wherein the mud-like objects are equidistantly arranged on the circumference, and the moving mechanism is rotation means that allows the dewatering case to rotate about a central axis of the circumference. Dehydrator.