JPS62204899A - Method and apparatus for dehydration treatment of water-containing solid - Google Patents

Abstract

PURPOSE:To obtain a uniform dehydration state, by charging a material to be treated such as a fine aggregate having moisture adhered thereto or sludge in a cylinder formed of a net material and removing moisture contained by centrifugal force action. CONSTITUTION:Water-containing sludge is charged in a cylinder 1 while the cylinder 1 is rotated by a rotary roller 10. The cylinder 1 is rotated along with the shaft cylinder 16 and bottom body 6 supported by a rotary joint part 7 having a bearing and centrifugal force is acted to remove adhered moisture to the circumferential direction of the cylinder 1. A rising and falling operation means 15 raises the bottom body 6 to close the bottom surface of the cylinder 1. Further, the suspension force acted on the cylinder 1 and the material to be treated can reduce not only the load acting on the rotary roller 10 but also kinetic energy and dehydration can be performed at low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to a method and an apparatus for dewatering water-containing solids, and the present invention relates to a method and an apparatus for dewatering water-containing solids, including slurry, sludge, and sludge of fine aggregate, other particulate materials, and other inorganic or organic solids. An object of the present invention is to provide a processing method and apparatus capable of dehydrating a large amount of water contained in a water-containing solid content such as water, using only a small amount of processing energy, and achieving uniform dehydration results within a short period of time. It is something.

Industrial application field Dewatering treatment technology for water-containing solids such as sand and other fine aggregates and other organic or inorganic solids and sludge.

Conventional technology With the development and spread of the concrete industry in the civil engineering and construction industries, there has been a large demand for various types of sand and other fine aggregates, and the supply has gradually decreased. As we all know, as it becomes increasingly difficult to obtain river sand, we have no choice but to use river sand or mountain sand mixed with mud, and we are also forced to use sea sand that is resistant to salt, etc. It is. In other words, it is necessary to wash sand with mud and salt adhering to it to remove the adhering components, but as a treatment mechanism to remove a large amount of water after such washing, Since there is a large amount of fine aggregate, there is no suitable method to use it, so it is best to pile it up in piles and let it naturally dehydrate by gravity.

As mentioned above, even if sand does not have mud or salt attached to it, it is preferable to cool it as much as possible in dam construction, etc., where a large amount of sand is used due to the heat of the water use reaction of cement. Put it in the water,
Furthermore, this is carried out in water using ice cubes, etc., and the sand after such cooling treatment also needs to be dehydrated in the same manner as described above.

Furthermore, in the double mixing method when preparing this type of mortar or concrete developed by the present inventors, the moisture attached to the sand is brought to a substantially constant and uniform state on the particle surface prior to mixing with the first cement powder. is important, and in order to keep the amount of adhering moisture constant and uniform, it is necessary to first attach a large amount of moisture to sand, etc., and then dehydrate it to reach the desired state.

Furthermore, when processing sludge deposited on the bottom of water, slurry of dust obtained during wet dust collection, slurry of coal powder and other mineral powder, etc., it is not enough to simply dispose of it. However, it is necessary to dehydrate the product, and if the product still contains a large amount of water, the cost of transporting it by truck or the like will increase, and sewage and the like will stick and scatter, causing significant stains on transportation roads and equipment.

However, it is well known that dehydration from such water-containing solids is extremely difficult and takes a long time.
The methods conventionally used for these dehydration treatments include:
Among these methods, instead of the above-mentioned method of piling the material in sand or the like, which is relatively easy to dehydrate, there is a method using vibration or ventilation, or in any case, if it is in agglomerated form, it takes a long time to dehydrate. For example, as in Japanese Patent Publication No. 53-29325, an attempt has been made to dehydrate water by using vibration, ventilation, etc. in addition to the action of gravity while being spread and transferred in a thin layer on a belt conveyor.

Problems to be Solved by the Invention The above-described conventional method of simply piling up sand and the like to dehydrate it requires a considerable amount of time to achieve the desired dehydration state. Moreover, it is the surface layer that is dehydrated, and the amount of adhering water increases on the inside or the bottom. Particularly when removing mud and salt, the mud and salt will accumulate and increase again in areas where moisture increases after being piled up.

Even when vibration or ventilation is used, the processing equipment becomes larger due to the large volume, and the cost of operating the equipment increases. Moreover, moisture is concentrated at the bottom, and considerable variation in moisture resistance after treatment is unavoidable. Ventilation rarely passes through the sand layer (and it is not easy to achieve desirable dehydration even if a vacuum or high pressure is used.

In order to avoid these disadvantages, products developed on a belt conveyor require special belt conveyor equipment and equipment to sequentially supply sand, etc. onto the belt conveyor, and in particular, it is necessary to maintain appropriate dewatering conditions on the belt conveyor. The processing time required to obtain this is quite long, and even if ventilation or vibration is used in combination, the processing time will be long, and the equipment and operational costs will inevitably increase. It is inevitable that there will be some variation in the amount of formation water resistance after treatment.

In particular, when dealing with sludge and sludge slurry, even if the equipment described above is used, it takes an extremely long time, the operating energy and costs are high, and the equipment becomes extremely dirty, requiring a huge amount of man-hours to clean it. In fact, it cannot be adopted because it is necessary and has many disadvantages such as severe wear of parts.In other words, in dewatering treatment using this equipment, it is impossible to develop and handle the water-containing solids in any case. However, in the case of sludge and sludge slurry, it is clear that such a development will cause the cargo to stick to equipment and become extremely difficult work, and furthermore, the dewatering efficiency is extremely low, so it is not recommended to use it in the event of a disaster. It is almost a waste of effort.Therefore, even if the pile method is used, it will cover a wide area of the ground due to the fluidity of the water content, require a vast area, and will not reach the desired dehydration state until a long period of time. As is well known.

It is conceivable to use a filter press to dehydrate such sludge, but this filter press is quite expensive and requires pressing after being rolled out into a certain thin layer. For such a large amount of material to be processed, it is necessary to divide it into many pieces and process each piece in sequence, and because the material is spread out in thin layers as described above, the equipment has to become larger. Moreover, the time required for each pressing process is considerably long. Moreover, the pressing force is generally 5 short roots or high (even if it is not more than 1 oυ), and the dehydration effect is not necessarily sufficient. etc. requires a significant amount of man-hours.

"Structure of the Invention" A material to be treated, which is a water-containing solid content such as fine aggregate, sludge, or sludge, is charged into a cylinder, and the material is passed through a bottom body that closes the bottom opening of the cylinder. The cylindrical body and the material to be treated are suspended, and under the suspended condition, the cylindrical body and the material to be treated are rotated to remove moisture contained in the material to be treated, and then the bottom body is opened. A water-containing solid content dehydration treatment method characterized by discharging split end filling material, a cylinder body formed by a net material or perforated material and a door material, a rotating means for rotating the cylinder body, and a rotation means for rotating the cylinder body. Lifting and lowering operation means having a bottom body that closes a bottom opening, and lifting and lowering the bottom body and maintaining the cylinder and the material to be treated stored in the cylinder in a suspended state via the bottom body. A water-containing solid matter dehydration treatment apparatus, characterized in that a means for carrying in a material to be treated is provided at the top of the cylindrical body, and a drainage means for discharging separated water is provided on the outer surface of the cylindrical body.

When the material to be treated is charged into the working cylinder whose bottom opening is closed by the bottom body, and the material is suspended and rotated, the centrifugal force caused by the rotation releases the water contained in the material to the net material or perforated material. and is discharged and removed to the outside through a cylindrical body formed of F material.

By raising the bottom body and suspending the cylinder and the material to be processed, the rotational driving force for the cylinder and the material to be processed, which have considerable weight, is significantly reduced.

After the treatment, the dehydrated material is discharged by separating and opening the bottom body from the cylindrical body. This discharge is carried out under conditions where rotation is continued due to at least the inertia of the rotational centrifugal force used in the dehydration treatment, so that the discharge operation also utilizes the rotational centrifugal force, and efficient discharge can be accomplished within a short period of time.

Therefore, under the continuous rotation conditions as described above, after the material to be treated is discharged, the bottom surface of the cylinder is closed again with the bottom body, a new material to be treated is loaded, and the next dehydration treatment can be performed under the continuous rotation conditions. By repeating the dehydration process under continuous rotation conditions in this way, it is not necessary to stop the heavy rotating parts by braking (because of the technical difficulty of stopping this braking and restarting after stopping the braking). No significant driving energy is required.

The moisture released outside the cylinder is discharged outside the equipment by the drainage means.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention as described above are illustrated in the accompanying drawings. One example of the device according to the present invention is shown in FIG. A cylindrical body 1 is formed of a net material or a perforated material 8 and a door material attached to the inner surface thereof, and a flange 11 is provided protruding from the top or middle part of the cylindrical body 1. ,
A ring-shaped rail 2 is attached to the lower surface of the flange 11, and the rail 2 is supported on a rotating roller 1°. A plurality of rotary rollers 210 are disposed to support the rail 2, and at least one of the rotary rollers 10 is a driving roller, that is, it is driven by the motor 12 in the case 4, and is rotated vertically. The cylindrical body 1 is arranged so that the swaying cylinder 1 can be rotated about its axis.

The cylindrical body 1 has an open bottom, and in this embodiment, a bottom body 6 having a conical top surface is attached to the bottom of the cylindrical body 1. A shaft cylinder 16 is vertically formed in the center of the bottom body 6, and this shaft cylinder 16 is rotatably connected to a joint part I having a bearing through a connecting shaft 17, and the bearing joint part T is It is attached to the lifting/lowering operation means 15. The elevating and lowering operation means 15 in this illustration is a hydraulic cylinder, the piston rod of which is connected to the joint part T, and the tail end of such elevating and lowering operation means is connected to the frame 20. It is fixed downward, and the frame 20 receives the reaction force during operation. The lifting/lowering operating means 15 may be a cylinder mechanism using hydraulic pressure, such as water pressure (or pneumatic pressure), but in some cases, mechanical lifting/lowering operating means using a worm or rack may also be used. good.

In any case, when the bottom body 6 is pulled up by the lifting operation means 15, it fits and closes the bottom surface of the cylinder body 1, and as a result of the further application of a pulling force, a suspension force is exerted on the cylinder body 1 and the contents therein. It's designed to be done.

According to the present invention, as an example, a fourth
As shown in the figure, an elastic material 14 such as a spring or outer plate is interposed to reduce the gravity applied to the rotating roller 10 under the lifting action conditions of the lifting operation means j5), and the elastic material 14
The ring-shaped rail 2 may be formed so as to be brought into pressure contact with the rotary roller 10 by a rolling blade and driven by the motor 12. Incidentally, an inclined branch 3 is provided between the above-mentioned shaft cylinder 16 and the connecting shaft 1T, and the branch 3 unfolds the materials to be processed loaded by the input chute 13 or the belt conveyor 18, and also performs lifting and lowering operations. When the paper body 6 is rolled down by the means 15, it contributes to extrusion of the ff1U which has become in a bridge state after the dehydration treatment inside the cylinder body 1.

In the one shown in FIG. 4, the symmetrical composite outer plate 14 interposed between the piston rod of the lifting/lowering operation means and the bearing joint part 7 is connected to the piston rod and the bearing joint part 7, respectively.
The two composite bullet plates are fixed to each other by rivets or other means and are connected at both ends, and both the lifting force and the pressing force by the piston rod are transmitted to the bottom body 6, but when it is pulled up, connects the bottom body 6 to the fourth
As shown by the imaginary line in the figure, after the lower opening end of the cylindrical body 1 is joined and closed, the elevating and lowering operation means 15 is attached to the composite outer plate 14.
The pulling force is stored. That is, the lifting force accumulated in this manner acts as a load reducing force on the cylinder 1 and the material to be treated loaded therein through the bottom body 6, and contributes to reducing the rotational driving force thereof. However, even if the elastic member 14 is not used as shown in FIG. , detects the descent of the cylindrical body 1 and applies a pulling force to the operating means 15 to reduce the load in the same manner as described above. The tlI force can be reduced. If it is pressed down on the contrary, the bottom body 6
It is clear that the material descends to the solid line position and discharges the processed material to the lower part of the cylinder 1, but the conical surface having a slope greater than the angle of repose of the material to be processed effectively achieves such ejection.

As shown in Fig. 1.4, there is a auxiliary circular rail 1 on the flange 11.
1 & is provided, and the side surface of an auxiliary drive roller 10e is pressed against the auxiliary circular rail 11a, and the auxiliary drive roller 10c holds the collar 11 and the cylinder 1 in a predetermined position. The driving roller 10, which provides a drive to the time cylinder 1, and in particular lifts up the bottom body 6, the cylinder 1, and the entire material to be treated therein by the lifting operation means 15, and the flange 11 is provided with the axial direction horizontal, moves to the rail 2. The aim is to achieve preferable driving even under conditions where the robot floats slightly upward. That is, the driving force by the auxiliary drive roller 10c is relatively low, but when the bottom body 6, the cylinder 1, and the material to be processed in general are floating as described above, the acting force for driving them may be relatively low, so the auxiliary drive roller 10c is not required. It is possible to continue rotational drive using only the drive roller 10c.

Note that a load cell or other direction detection means 5 is interposed between the drive row 210 portion and the seat 28 of the structure frame 20 as shown in FIG.
Detects the pressure receiving state of the operating means 15 based on the detection result.
to achieve preferable rotational drive.

The above-mentioned furnace material 9 is intended to prevent sand grains, etc. from passing through the mesh or perforations in the cylinder body 1, and is intended for sand grains, etc., which are made of woven or knitted fabric or non-woven fabric. Therefore, even if the technology is related to acid-radical concrete, it is possible to use the furnace material 9 made of any material, unlike, for example, a cement paste that targets cement powder on the μm order. In addition, a furnace material 9 with excellent strength can be used.As for the cylinder 1, it is not necessary to ensure that the side walls are parallel as shown in the figure, but in some cases, the bottom may be made gradually wider or the bottom may be made narrower. can be adopted.

A cover 21 is provided on the outside of the cylindrical body 1 to catch water scattered by rotation, and the water caught by the cover 21 is discharged to the outside by a receiving gutter 23 attached to the bottom of the frame 20. The cover 21 is provided with a cleaning fluid supply vibrator or nozzle 22, which discharges air or cleaning water to perform a cleaning operation when the above-mentioned cloth becomes clogged. Tsuzu is here.

Figures 2 and 3 show a structure in which the cylindrical body 1 and the bottom body 6 are slightly modified from those in Figures 1 and 4 as described above, so that the dehydration process is carried out continuously. There is. In other words, in the one in Figure 1.4, reinforcement 1 is reinforcement material 2
6 are provided vertically and horizontally so that the cylinder 1 does not deform, whereas in the case of Fig. 2.3, the cylinder 1 having a truncated conical shape has its top end pivoted at N19. The lower ends of the furnace material 9 and net material 8 are formed so that they can be opened and closed by vertical rods 24, as shown by dotted lines and solid lines in FIG. At the lower edges of the net material 8 and the furnace material 9, as shown in FIG. 3, a flexible strip 25 having a reinforcing function like a rope is provided. Further, the bottom body 6 is provided with an appropriate umbrella-shaped sending piece 21 on the upper surface, and a connecting member 29 is attached between the sending piece 27 and the vertical rod 24, as described above. The bottom body 6 is lifted up from the solid line position in FIG. 2 to the imaginary line position by the lifting operation means 15.
On the lower end side, push the lower ends of the net material 8 and the furnace material 9 open from the hidden line position to the imaginary line position in Fig. 2.3, and pull the vertical rod 24 to close the open end of the cylinder body 1. It is designed to ensure an airtight seal relationship.

In addition, in this figure 8g2 and 3, the rail 2 and rotating roller 1 are connected to the collar 11 provided at the upper end of the cylinder 1.
The arrangement of the driving means using the zero, the means for loading the material to be treated into the cylinder body 1, the lifting and lowering operation means for the bottom body 6, etc. are the same as those shown in FIG. 1 described above.

FIG. 5.6 shows another embodiment that is further modified from the one shown in FIG. 2.3. That is, while the one in Fig. 2.3 is configured such that the bottom of the cylinder 1 is expanded by the rise of the bottom body 6, in the one in Fig. 5.6, the bottom part is expanded. When body 6 rises, cylindrical body 1
The bottom part of the vertical rod 34 is pulled inward by a connecting rod 29 that is linked with the lifting operation means 15, and therefore the flexible cylindrical member located between the valley vertical rods 34 is The 4N curved unevenness formed on the outer surface of the cylindrical body 1, that is, on the circumferential surface of the cylindrical material accommodated in the cylindrical body 1 due to the material to be treated such as sand charged in the cylindrical body 1, has a temporary area. This ensures a sufficient dehydration effect due to the centrifugal force under the rotational conditions described above. In other words, when the bottom body 6 is raised and closed, the diameter of the vertical rod 34 is reduced to a certain extent, which reduces the amount of material to be treated stored in the cylinder 1, but the filtration area itself is - It is the same as that shown in Fig. 4, and therefore the dehydration effect during rotation can be said to be the same.

However, in the case shown in Fig. 5.6, the preferable percentage quality is exhibited during the discharge operation of the treated material after the dehydration treatment.

That is, if the bottom surface is closed with the bottom body 6 in the glazed state as described above, and the bottom body 6 descends as shown in FIG. Rod 3
4 is pushed out to the outside, and therefore, the surface of the material to be treated, which had been in contact with the inner surface of the cylinder 1 and was dehydrated, and the cylinder 1
The flexible member forming the is separated. In other words, granular materials that have been dehydrated generally lose their fluidity or shape followability, and their bondability to the housing body is increased. The material to be treated, which has been formed according to the folds shown in FIG. The material to be treated can be easily discharged.

Furthermore, the invention shown in FIG. When the body 1 and the bottom body 6 are rotated, a distance of 1 m is ensured at the bottom.Also, as mentioned above, the mesh material forming the cylinder body 1 has a distance of 1 m from the perforated material 8 and the f material 9. A cleaning water spray means 33 is provided on the outside, and the spray water 8 is spouted out while rotating at a slow speed as appropriate to clean and eliminate clogging.
□ To make an additional comment about the one in Fig. 6, the rotating means f is replaced by the rail 2 of the collar 11 and the rotating roller 10, and in some cases, the driving force is applied to the shaft 31t shown in ^11. It's fine.

Also, regarding the cleaning of the filter, use ultrasonic waves,
Alternatively, ultrasound can be used in combination. In place of the shaft rod 31 and bearing body 32, the circumference of the bottom body 6 is 0IIIt.
Three or more rollers may be provided to prevent the bottom body 6 and the cylinder body 1 from swinging during rotation.

In any of the above-described embodiments, the peripheral side of the bottom body 6 and the inner surface of the lower end of the cylindrical body 1 are provided with protrusions that engage with each other to ensure accurate rotational drive, Or rubber fi
It would be extremely significant to similarly achieve accurate rotational drive using a nose material such as T.

Furthermore, although the bottom body is flat in the fc embodiment described above, it can be substituted (as shown in FIG. In order to obtain rotational inertia, it is advantageous to form a so-called flywheel shape in order to utilize the inertia.

Further embodying the present invention, as shown in FIG. 7.8, Cζ
ζ Using the cylindrical body 1 made of rigid nail material, the vertical rod 34 is closed by the connecting rod 2g which is interlocked with the lifting and lowering of the bottom body 6 or its shaft cylinder 16 which is raised and lowered as shown in the front dpi. When the diameter is reduced, one end of the cylindrical body 1 is overlapped as shown by the imaginary line and the solid line in FIG. 7, so that such an operation can be carried out smoothly.

The cylindrical unit member 113 has a long hole 3 as shown in FIG.
It is clear that if the guide piece 36 having the shape 6a is provided, its operation will be performed smoothly.

Further, as shown in FIG. 9, the present invention uses a flexible member 1e on the inner surface of a rigid member 1dL,
The P material 1e may be moved up and down by the bottom body 6 or the shaft cylinder 16 to be separated from the inner surface of the P material 1d.

Furthermore, as shown in FIG. 10, the present invention further includes:
A flexible inner P is attached to the inner surface of the rigid outer P material 1d.
The outside P material 1d is formed into a cylindrical shape, and a plurality of intervening ring members 4 are provided between the shutter materials 1d and 10.
1 is interposed and the bottom body 6 as described above rises to close the bottom opening of the cylindrical body 1, as shown by the solid line, the inner F material 1e is moderately loosened and bent. When the dewatering process as described above is carried out and the bottom body 6 is lowered as shown in the imaginary line during discharge after such dewatering process, the inner p-material 1e as described above is removed together with the intervening link material 41. It expands downward to form the state shown by the imaginary line in Fig. 10, that is, the outer Vt++ P material 1d.
It is spaced apart from * and has a straight shape, thereby facilitating the discharge of the internal processed material.

In addition, in this case I of FIG. 10, the rigid external F member 1d has a thick link portion 42 at its lower end as described above.
When the link portion 42 is rotated as described above, it acts as a flywheel and effectively obtains rotational inertia. Such a rotational inertia force can stably obtain the centrifugal force effect due to the rotation as described above, and the stabilization of the rotational inertia force prevents vibrations during rotation operation,
Particularly when this rotation (or centrifugal force) is also used to discharge the material after treatment, it is more effective than the one provided on the bottom member (which separates from the cylinder body 1 during this discharge) as described above. It is clear that it is.

-' 0 0 To explain the operation method of the product according to the present invention as described above, sand with adhering mud such as clay, or sea sand with adhering salt etc., is used to remove the adhering components. Immediately after washing or sand mining from the bottom of the water, or in case of a rain, other adhering moisture-rich sand, water-containing sludge, sludge, etc. are removed under conditions where the bottom surface of the cylinder 1 is closed with the bottom body 6 as shown in the figure. Then, it is inserted into the cylindrical body 1, and in this state, the rotary unit 210 is driven to rotate the cylindrical body 1. The cylinder body 1 rotates together with the shaft cylinder 16 and the bottom body 6, which are supported by a rotary joint part I having a bearing, so that a centrifugal force is applied to the powder solids and water contained in the cylinder body 1. . The degree of centrifugal force is set to be at least 5G or more, preferably LOG or more, and 50G or more, and rotation is applied to the extent that such centrifugal force can be obtained.

Since the above-mentioned centrifugal force acts on the sand filled in the cylinder, the adhering water will move in the direction of the centrifugal force,
That is, the sand is removed in the circumferential direction of the cylindrical body 1, and as the γ component is removed, air is allowed to replenish and enter into the sand grain layer. Specifically, the moisture in the outer part of the cylinder 1 that is in contact with the P material 9 is first drained, and the moisture in the middle or inner layer is sequentially sent to this part and drained. Air enters and pushes moisture away.

As shown in the figure, the conical bottom body 5 immediately responds to the flow direction of water dehydrated by centrifugal force and Kyoto force as described above, and f
Effective dewatering can be achieved with uniform odor throughout the entire area of the material 4 and the cylindrical body 1. The cylindrical portion 6 is a central portion where there is little centrifugal force due to the rotational movement as described above, and the fine aggregate such as sand filled on the outside of the cylindrical tube 6 can be dewatered in a preferable manner in its entirety.

Cylindrical body 1 containing sand of at least 1 m' or more
It is clear that rotating a material requires a certain amount of energy, but once the rotation has started, it is natural that the rotation will continue due to inertia, and therefore a considerable amount of material to be processed is required. This means that relatively little operating energy is required even for processing.

In particular, in the case of the present invention, by raising the bottom body 6 by the lifting operation means 15, not only the bottom surface of the cylinder body 1 is closed, but also the entire amount of the cylinder body 1 itself and the material to be treated contained therein is closed. As mentioned above, it is also possible to suspend the R
It is clear that the suspension force acting on the rotating cylinder 1 and the material to be processed reduces the load acting on the rotating row 210, and can even be brought to a zero load state. The pressure contact load required for rotational drive is applied to rail 2.
It is only necessary to act between the rotary roller 10 and the rotary roller 10.

This is equally effective in terms of operation, and it is possible to sufficiently obtain the desired rotational drive with extremely less driving energy than under the load of the cylinder 1 and the entire amount of the material to be processed. is possible. In order to detect the state of action of the load 1 between the rail 2 and the rotating roller 10, the strain gauge 5 may be installed at a required position or the operating means 1 may be
As mentioned above, detecting and operating the sensor 5 at a fixed point can accurately achieve the above objective.

After processing fJJA, by lowering the bottom body 5 together with the shaft cylinder 6 using the operation cylinder 15, the entire amount inside the cylinder body 1 can be easily discharged and the next process can be carried out. Regarding such a discharge operation, in the present invention, the inertial force obtained along with the rotation imparted during the dehydration process or the centrifugal force effect thereof can be effectively utilized. That is, during dehydration processing, it rotates at a fairly high speed, and it is not easy to stop it by braking because it is heavy as described above, but in the present invention, the desired dehydration process can be carried out without stopping by braking. When this condition is reached, the bottom body 6 is lowered appropriately to form a gap with the cylinder 1, and the material to be treated can be discharged from the gap by centrifugal force due to continued rotation. However, by discharging the material in the cylinder 1 in this way, the weight is sufficiently reduced and the inertial energy is reduced, making it easier to stop by braking, but in some cases there is no need to stop the material and the rotation can be stopped. In this state, after the discharge of the material to be treated is completed, the bottom body 6 is raised, new material to be treated can be accepted, and the next dehydration process can begin.

Therefore, the process is similar to continuous operation. If the F material 9 becomes clogged, it can be easily solved by blowing high-pressure air into the cover 19 of the cylinder body 1.

In Fig. 2.3, the above-mentioned operational relationships are the same, but regarding the discharge after the dehydration process, by lowering the bottom body 6 a little, there is a gap between the lower end of the cylinder 1 and the upper surface of the bottom body 6. When a gap is generated, the material to be treated can be discharged under the rotation centrifugal force condition of the cylinder body 1 and the bottom body 6. That is, the lower end side of the cylinder 1 made of a flexible material is flexibly deformed as appropriate within the range between the solid line and the imaginary line shown in Fig. 3, and the dehydrated material to be treated is discharged under continuous rotation conditions. This shows that this device can be operated continuously. That is, as described above, with most of the processed material being discharged, a new material to be processed is charged, and when most of the processed material has been discharged, the bottom body 6 is raised.

Continuous operation is possible if the bottom opening of the cylinder 1 is closed and rotation is continued. In other words, it is natural that the cylinder 1 loaded with the material to be processed weighs over 1 ton, and it takes a considerable amount of energy to rotate this object to a speed that produces the centrifugal force mentioned above. It is clear that the braking force required to stop something that has been rotated and dehydrated is also large, and it takes several minutes to start and stop the rotation. Repeated operation every time is energy disadvantageous.

However, the second method that made continuous operation possible as described above
．． In the case shown in Fig. 3, the disadvantage of repeating starting and braking as shown on the left is precisely eliminated.

Fly ash is adopted as a typical material to be treated for the dehydration treatment of the present invention performed using the above-mentioned equipment,
The cylindrical body 1 was a test facility with a radius of 170 m, and 300 tons of hydrated fly ash mixed and adjusted to a fly ash to water ratio (W/F) of 60 cm was charged.
Rotate at 40 rpm (the centrifugal force at that time is approximately 150 rpm)
The results of the treatment are summarized in Table 1 below.

Table 1: In this case, the specific processing conditions are to reach the above-mentioned speed of 615 rpm 30 seconds after startup, and after reaching this predetermined speed, maintain this speed for the operating time shown in Table 1. It continued to rotate and then stopped after undergoing inertial rotation for 150 seconds.

In the case where river sand, crushed sand, etc. are stored in the cylinder as the material to be treated, a load detection means 5 such as a load cell is used.
When the lifting operation means 15 compresses the elastic material 14 and applies a lifting force to the cylinder and the material to be treated, the load detected by the load detection means 5 is at least 1/2.
It is preferably about 1/10 or less. It is clear that by doing this K, the rotational driving force can be significantly reduced.

An example of the operation of the method of the present invention carried out using the above-mentioned apparatus is as follows.

Operation example 1 A device as shown in Fig. 1 was adopted in which the diameter of the cylinder 1 was 1.00 m at the top end, 1.5 m at the bottom end, and 1 m in height. 1 tt of river sand with 12.2% of attached coral water bond in 1? It was charged and dehydrated.

After setting the speed of the cylindrical body 1 to 336 times/4 and applying a centrifugal force of around 75 G for 2 minutes, the bottom body was opened and the treated sand was taken out using a JIP. As a result, the amount of water landed was 7. It was 7%, and was evenly dehydrated throughout.

The above-mentioned work is carried out continuously, that is, after the dewatering treatment is performed by a predetermined centrifugal force for 2 minutes, the bottom body is opened and the material to be treated is discharged, and immediately after that, the bottom body is closed again and the clay ``shield'' is closed. The result of continuous operation in which the material to be treated is charged and the next dehydration treatment is sped up without stopping the rotation of the cylindrical body and the bottom body is 23φr, and such a throughput is the same as that described above. Judging from the fact that the equipment is compact, being a cube with a side of 1.5 m or less, including the entire frame, it can be said that the amount of equipment was unimaginable in the prior art.

It has been confirmed that the operating energy is significantly reduced due to the combination of favorable conditions such as compactness of the equipment, use of rotational force, and treatment in a suspended state.

That is, the river sand thus obtained is suitable as sand for the primary crosstalk in the double mixing method (SEC method) proposed by the present inventors, and the cement to sand ratio is 1:2. The properties of the mortar obtained by primary mixing with a water-cement ratio (W/C) of 22% and secondary kneading with a W/C of 41% from °C had a breathing rate of 0.46%. The sinking resistance value (α10) according to the method of JP-A-57-108637 developed by et al. is 0.34 Kfz-.However, the compressive strength after 7 days of a product molded using such mortar is 437% on average and 528% on average after 28 days, the variation range is narrow, and after 7 days the product was added and kneaded at 1:00 with the same cement-to-sand ratio and water-cement ratio as described above using simply piled sand. The average compressive strength was 365 yen, and after 28 days it was confirmed to be an excellent product with a strength of nearly 100 υ (higher than that of 437).

Operation example 2゜ Sea sand with a water content of 6.2% A and a salt content of 0.25% is washed with a sand grain cleaning machine (a cylinder with a semicircular cross section is set at an appropriate angle of inclination, and a screw is inserted into the semicircular cylinder). At the same time, water is stored in the lower area, and 111 m of sand is charged into the stored lower area, and the screw is rotated to transfer the sand from the water to the upper area while stirring it, and discharge it while cleaning it. While continuously replenishing about 40% of clean water to the sand lid in the sand lid, the above-mentioned agitation washing was performed, and the water content of the sand that was sequentially discharged from the top was 22%. The sand layer washed in this way was charged into the same equipment as in operation example 1, and the cylinder 1 was dehydrated for 3 minutes by applying about 300 cycles/centrifugal force (59G & degree centrifugal force), and its water content and salinity were determined. The result of measuring the content was that the moisture content was 7.6%.
Purified sand with a salt content of 0.021%, a constant moisture content, and sufficient desalination was obtained. In other words, when using such sea sand as mortar or concrete, the salinity standard is 0.1% or less for civil engineering and 0 for construction.
．． 04% or less, which satisfies all of these criteria.

Operation Example 3: In order to cool the crushed sand with a water content of 3.2% and a temperature of 34℃, the same sand washer as in Operation Example 2 was heated at 8℃.
About 25% of the amount of sand that was sequentially charged was continuously supplied with cold water, and the sand was stirred and pumped by a screw while being overflowed to cool the sand. The moisture content of the sand discharged from the upper part was 21 cm, but this sand was
IF+ for the dehydration equipment shown in the figure? Charging 300 times/-” (approximately 59
When the dehydration treatment was carried out for 3 minutes under the operating conditions of G), the water content was 7.9% and the sand temperature was 17°C, and cooling sand with stable and uniform water-containing blades and temperature conditions was obtained. Ta. In other words, the sand obtained in this way contains coarse aggregate and cement powder at a temperature of 30°C.
Even if the temperature is above 30°C, the mixed concrete can be accurately kept at a temperature of 30°C or lower, making it possible to obtain concrete suitable for dam construction and the like.

Operation Example 4 In a ready-mixed concrete factory - (In order to dehydrate the sludge water, which is the cleaning wastewater from the cleaning mechanism, using the same equipment as in Operation Example 1, the shaft cylinder 16 provided at the center of the bottom body 6 was made of a large diameter. , the operation was carried out with a distance of 10c!n between the cylinder body 1 and the shaft cylinder 16.

That is, the sludge water having a solid content ratio of 10.8% is placed between the cylinder and the shaft cylinder 16 as described above at a rate of 0.45%.
such a cylinder 1 at 478 rpm (approximately 15
After processing for 5 minutes by rotating at a speed of 0 G (centrifugal force), the treated cake was discharged, and the moisture content of the cake was measured. As a result, a treated product of 72.7% was obtained.

``Effects of the Invention'' Since the water-containing powder and granular material to be treated as described above can be dehydrated in the cylinder while remaining in an aggregated state (without being spread out and dispersed), the equipment can be extremely compact, making it easy to use. In such a compact facility, processing takes advantage of rotational inertia, and since it can be rotated while being lifted up by the lifting/lowering operation means, it can be rotated with very little energy even when processing a large amount. The purpose of dehydration can be achieved at low cost, and since the dehydration is carried out under centrifugal force conditions, a substantially uniform dehydration state can be formed throughout the entire dehydration state even if the dehydration remains in the aggregated state as described above. Even with fine aggregate, the entire surface of each particle can be adjusted to have a uniform surface water state, and a stable shell state can be formed through the primary kneading of double mixing, making it possible to create rational and high-quality mortar or This invention has effects such as being able to manufacture concrete products, and is a highly effective invention industrially.

[Brief explanation of drawings]

The drawings show the technical contents of the present invention, and FIG. 1 is a partially cutaway side view showing one example of the device according to the invention, and FIG. 2 is a cylindrical body and bottom body portion showing a modified example thereof. Fig. 3 is a partially cutaway side view, Fig. 3 is a plan view of the part, Fig. 4
The figure is a partially cutaway side view of another embodiment, and the WIs figure is another one.
FIG. 6 is a partially cutaway side view of one embodiment, FIG. 6 is a partially cutaway side view thereof, FIG. 7 is a partially cutaway side view of yet another embodiment, and FIG. 8 is a plan view thereof. However, in these drawings, 1 is a cylinder, 2 is a rail,
3 is a branch, 4 is a case, 5 is a load detecting means, 6 is a bottom body, 7 is a joint portion having a bearing, 8 is a mesh material or a perforated material, 9 is a P material, 10 is a rotating roller, 11 is a flange portion , 12 is a motor, 13 is a charging chute, 14 is a chute, 15 is a lifting operation means, 16 is a shaft cylinder, 11 is a connecting shaft, 1B is a belt conveyor, 19 is a pivot joint, 20 is a frame, 21 is a cover, 22 is a supply vibrator or a nozzle, 23 is a receiving gutter, 24 is a vertical rod, 25 is a potable strip, 26 is a reinforcing material, 2T is a feeding piece, 28 is a catch, and 29 is a connecting member.

Claims (1)

[Claims] 1. A material to be treated that is a water-containing solid content such as fine aggregate, sludge, or sludge with moisture adhering inside a cylinder formed by one or both of a mesh material, a perforated material, and a filter material. A centrifugal force action condition in which the cylinder and the material to be treated are suspended through a bottom body that closes the bottom opening of the cylinder, and the cylinder and the material to be treated are rotated under this suspension condition. A water-containing solid content dehydration treatment method, characterized in that moisture contained in the material to be treated is removed under the bottom body, and then the bottom body is opened and the material to be treated is discharged. 2. Remove the moisture contained in the material under centrifugal force by rotating the cylinder and the material to be treated, and after removing the moisture, open the bottom body and discharge the material under continuous rotation. After that, the bottom body is closed again and a new material to be treated is charged into the cylinder, and the new material to be treated is dehydrated without substantially stopping the cylinder and the bottom body. A method for dehydrating a water-containing solid content according to claim 1. 3. Discharging the dehydrated material to be treated under conditions of continuous rotation of the cylindrical body and the bottom body, charging a new material to be treated, and starting the dewatering process on the new material. A method for dehydrating hydrated solids. 4. The cylindrical body is rotated while applying a lifting force corresponding to the weight of the material to be treated through the bottom body to the cylindrical body to dewater the material under centrifugal force. The method for dehydrating a water-containing solid content according to any one of Items 3 to 3. 5. A cylindrical body formed of a mesh material or a perforated material and a filter medium, a rotating means for rotating the cylindrical body, and a bottom body that closes the bottom opening of the cylindrical body, and the cylinder body can be lifted up and down from the bottom body. Lifting and lowering operation means are provided for operating and maintaining the cylindrical body and the material to be treated stored in the cylindrical body in a suspended state via the bottom body, and means for carrying in the material to be treated is provided at the top of the cylindrical body, 1. A water-containing solid content dehydration treatment apparatus, characterized in that a drainage means for discharging separated water is provided on the outer surface of a cylindrical body. 6. The water-containing solid matter dehydration treatment apparatus according to claim 5, wherein the cylindrical body is formed of a flexible material and a connecting member is provided between the cylindrical body and the bottom member. 7. The water-containing solid content dehydration treatment apparatus according to claim 5, wherein the cylindrical body is folded in the axial direction. 8. A vertical rod is arranged in the axial direction of the cylinder, and the vertical rod and the bottom body are connected by a connecting member, so that the cylinder can also be opened and closed by operating the lifting and lowering operation means for the bottom body. A water-containing solid content dehydration treatment apparatus according to any one of claims 5 to 7. 9. The water-containing solid matter dewatering device according to claim 8, wherein the bottom part of the cylindrical body is expanded by raising the bottom body. 10. Water-containing solid matter dehydration according to claim 8, wherein the diameter of the bottom of the cylinder is reduced by raising the bottom body, and expanding the bottom of the cylinder by lowering the bottom body. Device. 11. According to any one of claims 5 to 10, wherein a shaft rod is provided vertically on the bottom surface of the bottom body, and the shaft rod is slidably and rotatably supported in the axial direction by the bearing body. The water-containing solid matter dehydration apparatus described above. 12. A weight detection means such as a load cell or a spring deflection amount detection mechanism is provided for detecting the weight action conditions on the cylinder body and the bottom body, and the detected value by the weight detection means is sent to the hydraulic pressure adjustment mechanism, and the hydraulic pressure adjustment mechanism 12. The water-containing solid matter dewatering device according to any one of claims 5 to 11, wherein a hydraulic cylinder serving as the lifting/lowering operation means is operated by the lifting/lowering operation means. 13. The device according to any one of claims 5 to 12, wherein the lifting force exerted by the lifting/lowering operation means on the bottom body and the cylinder housing the material to be treated is absorbed by the elastic material. Water-containing solid content dehydration equipment. 14. Claim 5, wherein a fixed point is set at a constant distance in the height direction between the operation head and the cylinder body in the lifting operation means, and the lifting operation means is operated depending on the deviation from the fixed point. 14. The water-containing solid matter dehydrator according to any one of Items 1 to 13. 15. The water-containing solid content dewatering device according to any one of claims 5 to 14, in which a weight part is arranged around the circumferential side of the bottom body to form a flywheel shape.