JPH06182185A - Method and apparatus for control of solid particle outflowing - Google Patents

Abstract

PURPOSE:To contrive the improvement of operating efficiency and the curtailment of expenses, labor and power and the maintenance of an equipment adapted for separation of muddy water, foul water and liquid or purification thereof and treatment of the resulting solid particles by preventing the blockage of the equipment which has been a hindrance to the improved operation and the automation of the equipment and removing blocking material therefrom. CONSTITUTION:In the equipment adapted for separation of muddy water, foul water and liquid or the purification thereof and treatment of the resulting solid particles, a valve 5 or damper capable of opening an outlet 2 of a cyclone 31 to the outer side is used and actuated by power operation or an automatic system in response to output from a volmetric or floating type specific gravity balancing vessel 8 to form bypass passages 3 and 4, thereby, despite a temporary stopping of the water flow during operation, the main stream is maintained and easily adjustable and, thereby, the flow can be excited into vibration and fluid can be supplied to the bypass passages to remove blocking material therefrom. Also, the concn., dewatering and discharge of the liquid are made easy by the cyclone 31 or a settling tank. This apparatus permits the improvement of the operating efficiency, the curtailment of expenses, labor and power and the maintenance of the equipment and a combination with the conventional cyclone, settling device, etc., in series or parallel relation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a settling tank, a liquid cyclone device and a method of using the same, including construction mud or bentonite mud, mud generated from construction, sediment, sludge, water and sewage, contaminated soil, rivers and lakes. The present invention relates to a method and a device suitable for purification, dewatering or waste treatment, mineral treatment, etc. in the treatment of dredged soil or sludge in harbors, drainage.

[0002]

2. Description of the Related Art A centrifugal decanter can be used for dewatering and classifying muddy water, which can be easily changed in separation conditions by changing the rotation speed of the rotor, but is expensive. Although the settling tank has a simple structure, the separation operation can be adjusted by selecting the depth and the residence time, and the efficiency can be improved by using the inclined plate together, but it is restricted by various conditions and there is some kind of gelation or buffered settling phenomenon. Separation by spontaneous sedimentation of mud becomes impossible. Further, it does not have a scraping mechanism, and it takes a lot of time to take out the sediment, and sometimes there is a problem that it solidifies with time. The conventional dehydration with filter cloth is inefficient because of obstruction, and there is a problem that conditions cannot be selected during operation. Although there have been methods of operating the valve by extracting the pressure to control the operating conditions of the liquid cyclone or using an apex valve, etc., the operating range is limited, and the valve itself is often complicated in structure, obstruction, wear, etc. Had not solved the obstacle. The separation mechanism of the cyclone was considered to be the same as the settling tank in principle, so
The gelled substance in the sedimentation tank was discarded because it could not be separated. There has been no low-cost, simple and reliable method for controlling the extraction, classification and dehydration of concentrated powder or slurry. In particular, it was difficult to control the liquid cyclone removal and the specific gravity of the slurry in terms of cost due to irregular and abrupt fluctuations of the muddy water state and obstruction obstacles. Poor valve performance and automatic control mechanisms were difficult and expensive to handle in such cases. A normal control valve is apt to be clogged, and if clogged, it takes time and labor to wear the compound.
Therefore, sedimentation of mud on-site during excavation work is mainly done by a sedimentation tank, and sometimes only a single-stage cyclone is used.Muddy water that does not meet the drilling condition standards or stabilized mud is discharged from the tank and discarded. It was the cause of a large amount of sludge and waste soil. Thus, there was no low-cost and simple treatment method for dehydrating or recycling a large amount of earth and sand discharged from excavation work and dredging work. There is a method of using a dehydration screen with a cyclone for the treatment of drilling mud, stabilized bentonite mud, etc., but the equipment was expensive, the effect was not stable, and the cause was unknown. The settling tank is simple,
Removal of the sediment was a problem. In a gas phase cyclone, a valve device that uses fluid pressure to open and close by itself is used for powder that has good fluidity, but it could not be used for powder that contains moisture or sand. The powder silo or supply container usually has an inverted cone shape at the bottom, and there were many problems due to the crosslinking phenomenon.

[0003]

[Problems to be Solved by the Invention] When sediment is separated from water or muddy water from a settling tank or a liquid cyclone and concentrated to prevent clogging of the outlet of the effluent in an intended or unintended concentrated state, a stock solution, Even if there is a sudden change in the flow rate, concentration, particle size, composition, or viscosity of the sediment, a wide range of measures should be taken to maintain processing capacity, concentration, or separation performance. In order to properly cope with the nature, amount of treatment, content, clogging, etc. of sediment, it has been conventionally difficult to use it at a work site where it is contaminated, because it requires manpower, expensive control equipment, and a special valve. This has soil or fine particles of stickiness and thixotropy, but if a strong vibration force is applied to a container or the like in order to remove these obstacles by vibration, impact, etc., the measurement and control mechanism will be damaged. In addition, when using conventional dewatering sieve, the entire cyclone treatment including heavy soil was carried out through the settling tank, so the separation performance deteriorated and cyclone wear was severe. The treatment capacity declined when the separation was improved and the sand content on the purified water side was reduced. Cyclone, simplification of settling tank control, usage conditions, installation position,
Configure a settling tank and cyclone system that can be easily changed in use process,
It was necessary to improve efficiency and save pump power. Also mud,
When treating mud water, the dehydration process has also been an obstacle to cost savings. The construction sludge was never recycled. Separation of landfill waste, washing of soil, and simple dehydration were necessary for landfill use and recovery of contaminated land.
For mud, powder discharge, dust collection, water treatment waste sludge treatment by microorganisms, atmospheric air, water treatment sludge, solving the functional and cost difficulties of the conventional method, difficult to block, and easy to remove when blocking Therefore, there has been a demand for an efficient, low-cost device or component that self-detects a blockage and automatically eliminates it if possible.

[0004]

[Means for Solving the Problem] In the case of separating sand or silt from a clogging fluid, a liquid-containing system exhibiting thixotropy, or organic sludge, the flow rate control or the control of taking out the separated substance is not occlusive or non-self-controlling. Therefore, it was difficult, and I learned the necessity of countermeasures because the concentration changed irregularly during processing. At the inlet high concentration of liquid cyclones and sedimentation tanks, the amount of soil and silt that accompanies the product side increases, which easily clogs, which makes recycling unsuitable or causes obstacles to sediment dewatering. Research also found out. The present invention has been made as a result of research on a particle system, particularly a mud particle processing apparatus. From the viewpoints of flow control and leakage control, in the valve device, the use of a valve device that allows leaks enables conversely smooth flow control, and a valve structure that minimizes the internal dead angle when the flow is reduced. By vibrating the mud slurry as needed to prevent or eliminate the blockage, and by vibrating the flow ensuring during specific gravity measurement, stable specific gravity measurement is possible. Automatically or automatically control the particle slurry concentration or specific gravity, maintain stable high particle concentration in the concentration stage in this way, reduce the water content of mud or sediment, and save power. The particle-containing system can be treated while eliminating obstacles by a selective combination of the above. These operations can be performed by detecting the inlet side or outlet specific gravity and performing self-power control or self-power control if blockage is prevented. On the contrary, if the control reliability is increased with an appropriate valve structure, blockage can be prevented, and the dehydration rate and separation efficiency can be increased. Dehydration or concentrated cyclone downstream extraction control is a self-controlled or self-controlled control in which a predetermined amount of the suspension or slurry that has flowed out flows into the measuring container, is passed through the overflow, and the weight that changes depending on the specific gravity of the constant volume is output. Is. If the concentration of the separated slurry is increased, valve clogging is likely to occur. For this reason, in a valve structure having a fixed valve opening degree or dead space, control is unstable and control is apt to occur, and separation or concentration becomes difficult. Therefore, in addition to the main flow path, an auxiliary flow path is provided near the valve body or the outlet to prevent accumulation of mud due to retention. This is a new finding. The container measures the weight of a substantially constant volume of liquid or slurry to obtain an output that depends on the specific gravity. The valve element, gate, damper, etc. are controlled by elastic deformation of various structures such as spiral springs, leaf springs, torsion springs, etc., or by the principle of a balance using levers, arms, etc.
The container is to prevent sedimentation and retention of sediment on the bottom of the container,
Besides the overflow, it is preferable to provide an outlet near the bottom.
It is preferable to give vibration to the slurry because it may be stationary after the thixotrophic flow and lose fluidity and solidify and block in the container. A funnel type or inclined plate bottom is suitable for preventing retention. Retain less to improve response,
Moreover, in order to obtain an appropriate output, the mode in which the principle of leverage works as in the first embodiment is particularly suitable. Like the scale, the output can be changed depending on the position of the weight, and the specific gravity of the slurry can be controlled freely. An elastic balance such as a coil spring or a leaf spring balance, or a principle such as torsion balance can also be used. Outflow velocity from the bottom outlet of the measuring container is high with low viscosity and acts on the valve closing side where the container water level falls and is larger than the specific gravity difference, but due to stagnation even in the valve fully closed position due to the valve short circuit opening or another communication passage It is preferable to maintain the required flow rate so that the plugging of the slurry does not occur. When the container is filled with the high concentration and high specific gravity liquid, the output in the opening direction becomes large.

[0005]

[Liquid Cyclone or Settling Tank] The cyclone may be a combination of a plurality of cyclones, and may include those having different diameters. In order to control the particle content and maintain the specific gravity at a predetermined value, it is necessary to use a clay and a cyclone having a relatively small diameter for silt separation together from the viewpoint of drilling mud control. A pump and a small-diameter cyclone are provided separately from the mainstream and used constantly or when necessary. It can be used all the time or as needed. A large number of small-diameter cyclones are required to obtain the same throughput, but the power cost is low. However, the small-diameter cyclone group was expensive and the downstream outlet control was complicated and expensive, so it was not used for mud treatment. The control method of the present invention is easy to simplify, the outflow port and the control valve can be provided outside, and even if the valve drive source is the same, the flow rate characteristics of each port can be easily adjusted by adjusting the valve position. In this way, it is possible to control not only a small number of outlets but also a large number of cyclones with one set or a small number of sets or an individual device, and the flow rate can be set for each outlet. In the past, since the distribution of the flow rate was complicated and expensive, such a thing was not used and the necessity was not recognized.

[0006]

[Stable control] If the concentration of slurry is increased by following the fluctuation of mud concentration and the number of cyclone stages is increased, the sand separation efficiency of the dewatering sieve had a problem that the collection efficiency would decrease due to the supply of dilute mud. Will rise and the quality of the pile driven into the excavation site will be improved. If the cyclone diameter is different, it is appropriate to control downstream extraction separately, and depending on the discharge particle size, even lower discharge mud can be reused for the production of drilling mud.
In the outflow control of the settling tank, a plate-shaped, curved, rod-shaped, or convex valve body along the gap outlet can be used. The balance or lever fulcrum is used as a support selected from hooks, points, blades, or bare links, and if necessary, it can be covered or sealed to prevent the influence of dust and mud. Also, by installing springs at fulcrums or key points and adjusting their strength, length, etc., it becomes easy to respond to various changes in properties such as mud, sediment content, specific gravity and viscosity.
In addition, it improves vibration resistance during use and transportation. It is preferable to attach a vibration mechanism to the measurement container or the measurement unit. This facilitates the flow promotion by thixotropy to prevent clogging of the outlet, retention and clogging of the measuring part. The above operation showed that thixotropy was exhibited in the specific gravity of soil and mud slurry that tended to gel, and those that lost fluidity when left to stand were sometimes difficult to process. In this case, the present invention blows carbon dioxide gas to adjust the pH.
To ensure fluidity by adjusting or vibrating the container itself or inserted into the inside or a vibrating flat, three-dimensional or trapezoidal wire mesh of any shape, lattice-like object, spring-like vibrating insert, Specific gravity control or smooth outflow control becomes easy. The feature is that no additive is required,
You may use together and may improve workability. Sedimentation tank, near the outlet from the bottom of the granule silo, or in addition to this, insert or spread a vibrating body inside the sedimentation tank, measurement tank, or the bottom of the granule silo. The vibration effect can be enhanced by reducing the pressure of the volume by arranging at the position. This protector can supply water or air to aid fluidity. The vibrating body penetrates the outlet to remove or prevent the clogging of the outlet and to reduce the resistance of vibration transmission, so it is most effective with small power, but even with an independent wall penetrating structure Good. The vibrating body that crawls on the bottom is exemplified by various shapes of wire, rod, net, lattice, multi-hole plate, expanded metal, etc., as well as valves, dampers and peripheral materials, a rigid or elastic material that is wear resistant is suitable. There is. Steel, non-ferrous, plastic, rubber, ceramic materials can be used and composites thereof. Sediments, powder particles, etc. half solidified by vibration flow thixotropically in the vicinity of the vibrating body, or the bridge collapses and flows down along the vibrating body. The solids fall into the subsequent cavities and flow further, thus flowing one after another and being discharged from the outlet. Therefore, the obstruction obstacle is eliminated and smooth outflow is guaranteed. If a small amount of water or air is supplied as necessary, fluid lubrication or fluidization further facilitates the flow. Multiple vibrators can be used together to save the number. It has been difficult to dehydrate a large amount of soil. However, according to the present invention, particle size separation or purification, dehydration can be performed easily and at low cost, and after the treatment, the sediment components are mixed again in a desired ratio to increase the dehydration efficiency and to return to the original sediment after the treatment and wash at a relatively low cost. Alternatively, dehydration or blending treatment becomes possible.

[0007]

[Embodiment 1] FIG. 1 shows a system of a cyclone 31 and a cyclone control system 35, a specific gravity detection tank 8, a settling tank 29, and a dewatering sieve 28 suitable for treating mud, sludge, muddy water and the like according to the present invention. The cyclone 31 may be another settling tank or the like,
You may use together. Bentonite fine particles in the ground drilling method for cast-in-place cement piles, CMC which is a viscous component
It is possible to treat stabilized mud including soil and sand from excavated ground. It can also handle ordinary muddy water. Muddy water or relatively dilute slurry is sent from the cyclone inlet 1,
After the sediment and silt are separated, they enter the storage tank or the reprocessing settling tank through the outlet 32. Separated sediment, silt, etc. descend while swirling the cyclone wall, and measure specific gravity from slit 2 or hole 3 of valve 5 provided in the side wall of the lower outlet, etc. The part that enters the tank 8 and overflows exits from the overflow port 26, the other exits from the tank bottom outlet 24, enters the dehydration screen 28, drains water, and deposits on 33.
Furthermore, it dehydrates naturally. The separated muddy water enters tank 29 and is refluxed or is subjected to a second cyclone. The specific gravity measuring tank 8 is supported by a fulcrum 20 and a fulcrum 9 suspended by a rod balance structure. The specific gravity measuring tank 8 descends due to the weight of the concentrated slurry retained in the tank 8 at a constant volume, and a valve or damper 5 connected to this is opened. Enlarge the lower opening of the cyclone. When the diluted muddy water enters 8, the valve 5 rises in conjunction, closes the gap, reduces the flow rate, only flows out from the bypass openings 3 and 4, and is controlled to the concentration side. It is preferable that the bypass opening is in a blind spot, and a small amount of the bypass opening constantly flows out to prevent the blockage. The vibrator 7 inserted from the bypass port 3 to the bottom of the cyclone is driven by the vibrator 6 to prevent clogging and restore the flow path when clogging. It was found that it is effective to operate at all times, but it is also effective to drive only at the time of blockage. The vibrator 22 prevents the slurry in the tank 8 from freezing (stopping the flow). The vibrator 21 is for preventing the bottom portion from being deposited, and is connected to the outlet vibrator 23 while being prevented from being blocked by a drive shaft penetrating the lower outlet 24. In either case, power can be saved if vibration is applied only when necessary. These vibrators prevent clogging due to the vibration when the power is stopped, but the clogging can be detected depending on the condition of the vibration, the vibrator driving source can be inserted, and the clogging can be eliminated. Reference numeral 10 is a fulcrum of the balance, and a bearing or a blade can be used. Specific gravity can be adjusted by adjusting the opening degree of the valve 3 with the movable weight 11 or the adjustable spring 34. Instead of the dewatering sieve 8, other known dewatering machines such as vacuum dewatering can be used. Alternatively, it is advantageous to use a dehydrator suitable for dehydrating mud and earth and sand having poor fluidity, as in Japanese Patent Application No. 4-75115. In such a case, switching batch type work can be performed by the switching distributor using the chute, and the dehydration efficiency is improved. FIG. 2 is a side view of FIG. Although the valve 25 and the vibrator are omitted, a known valve or the outflow control device according to the present invention can be connected in series to increase the effect. Further, an intermediate closed or open tank may be provided below the cyclone, and then a valve device may be added.

[0008]

Second Embodiment FIG. 3 shows an example of a valve structure. The notch 2 prevents obstruction by constantly creating a flow by bypass when the valve is closed. Reference numeral 36 is a vibrator, and 37 is each wall having less vibration resistance than the bottom plate 8. Reference numerals 39 and 40 are lock nuts, 41 is a support bolt, and 42 is a spring that gives tension to the vibrator 21. 43 is a bottom deposit particle to be made to flow.

[0009]

Third Embodiment FIG. 4 shows a case where the specific gravity measuring tank is a spring balance using a spring 34. Reference numeral 46 is a material that prevents wear of the valve 5, such as rubber. The slurry 47 concentrated in the cyclone or the sedimentation tank flows out from the notch 2 or the bypass hole 3 and overflows from the bypass hole 26 even when the valve 5 is closed. The valve 25 is a known valve or orifice to prevent sedimentation and retention at the bottom. When the specific gravity becomes large, 8 descends to open the large opening 4 between the valve 5 and the outflow port 45 and discharge the surplus downward. 22 is a vibrator for ensuring fluidity, 48 is a supply port for water or standard solution for specific gravity correction, and 50 is a hanging tool for a calibration weight.

[0010]

Fourth Embodiment FIG. 5 is a sectional view of a vibrator 36 having a bypass port closing valve 25 and a static pressure open / close type outflow control valve 5. The outflow is controlled by the static pressure of the slurry. By inserting a blockage prevention oscillator into the flow path, it is possible to guarantee blockage prevention at a small flow rate or at the time of closing and recovery of fluidity at opening.

[0011]

[Embodiment 5] FIG. 6 is a diagram of a flat type vibrator for flat bottom flow. It is a two-way oscillator composed of a lattice 52 and wire mesh, expanded metal, or strings stretched almost in parallel. It can be shaped according to the settling tank and silo bottom.

[0012]

Sixth Embodiment FIG. 7 shows a combination of a butterfly damper 54 with a specific gravity measuring tank 8 and a weighing system. Although the bending of the outlet is easily blocked, it is solved by using a vibrator. Reference numerals 55 and 56 are vibration detection ends, which stop the vibrator when unnecessary, detect the stop of vibration due to the outflow stop due to blockage, and operate the vibrator to remove the blockage. The valve 54 closes when the water level decreases with low viscosity mud water, and opens when filled with heavy slurry.

[0013]

[Embodiment 7] FIG. 8 shows a method of taking out from the bottom of a sedimentation tank or a silo to increase the internal volume by lowering the height and easing the inclination of the bottom plate. Discharge. Reference numeral 60 is an up-and-down mechanism of the valve 25.

[0014]

[Embodiment 8] FIG. 9 is an explanatory view of a combination of the bottom plate, vibrator and conveyor of FIG. A long outlet is provided, and the discharged product is taken out by the belt conveyor 62.

[0015]

[Embodiment 9] FIG. 10 shows a specific gravity measuring tank having a slit outlet 24 from the bottom plate 8, a sedimentation tank or a silo.
A fluid distribution / supply mechanism 73 is provided near the bottom. If a solidified sediment is generated by leaving it to stand, supply a small amount of water to the oscillator 2
The fluidity can be recovered and taken out by applying vibration at 1, 36. A dispersing agent such as a surfactant may be added to water. In the powdery silo, the weak vibration and the small amount of air, which are not effective by themselves, can be introduced and the take-out can be smoothly performed by the synergistic effect. Further, by inserting the vibrator into the tank from the outlet or its vicinity, the vibration power is small and the influence of the vibration of other device parts can be kept small. This is preferable for a specific gravity measuring device or the like. The distributor has the effect of making the drop of slurry, powder, etc. in the tank uniform over the tank cross section. Without this, a short-circuit port is likely to be formed in the vicinity of the take-out port, and a stagnant portion is likely to occur at the bottom. It also reduces the deposition pressure, prevents the bridging phenomenon and aids in vibration. Distributor itself is the vibrator 21 or 5
It may be 2.

[0016]

[Embodiment 10] FIG. 11 shows a mechanism for opening the outflow 24 when the heavy slurry is deposited, the bottom 8 of the settling tank presses and sinks the spring 69 due to its specific gravity to cause a deviation from the substantially fixed valve 5. Show. It can be used for specific gravity measurement tank or sedimentation tank. 6
Reference numerals 3 and 64 are pressing springs or tension springs.
It is preferable to also use a guide for regulating the position.

[0017]

[Embodiment 11] FIG. 12 shows that the outlet has a cross section expanded in the flow direction to prevent clogging due to the formation of lumps of soil, clay, silt, etc. 7 shows a combination of an outlet structure and a valve that prevents blockage. At the same time, a cover or case 5 to prevent the spillage from scattering
It shows 3. The cover 53 may be fixed to 45 or may be loose. Further, the flow path may be placed open on the valve plate or fixed. It may be a curtain-shaped one that can be easily removed and inspected. 45 can be easily formed by attaching a modified joint to the end. The specific gravity measurement control system has a small overflow section to improve accuracy. The control is a float type and the opening degree of the valve 5 is adjusted by the buoyancy of the float 78. It is easy to control the position of the float when the float is exposed above the liquid surface. To increase the average specific gravity detection accuracy, it is preferable that the float has a depth dimension or the container be shallow. The vibrators 22 and 23 are equipped to prevent the slurry from freezing. Reference numeral 76 is a spring adjusting lever, and 77 is a fixed holed plate. 75 is a baffle plate, 70 is a through-hole of the operating rod 74, and the vibrator 23 vibrates both 5 and 78 to prevent the mud from sticking or freezing, thereby improving the accuracy of measurement and control. The float may be a float-lever transfer type, such as a conventional water level control valve. A water level transmitter may be attached to control the automatic valve.

[0018]

Twelfth Embodiment FIGS. 13 and 17 show an example of the cross section of the outlet and the arrangement of the valve element and the bypass holes 2 and 3. Reference numeral 80 in FIGS. 17 and 18 is a spacer attached to the outlet or the valve, which may be a radial arrangement.

[0019]

[Embodiment 13] FIG. 14 is a diagram showing the relationship between a slide valve body or damper plate usable for various outlets and a cross section of the outlet 45. The main outlet 24 allows the passage to be fully opened by moving the valve, but cannot be fully closed. For full closing, another known valve or damper device may be connected in series.

[0020]

[Embodiment 14] FIG. 15 is a longitudinal sectional view showing a tank plate or a connecting flange or screw 78, an outlet 45, and a plug type valve 5. It is an opening / closing type with a fulcrum 20 or a moving opening / closing type in the flow direction. FIG. 16 is a cross section taken along line AA of FIG.

[0021]

INDUSTRIAL APPLICABILITY The present invention is to improve the efficiency in separating or purifying muddy water, sewage, and liquid, and improving the efficiency by improving the efficiency and preventing obstruction and obstruction of obstructions, which are obstacles to automation.
Manpower, power, and equipment costs can be saved. Conventional cyclone,
It can also be combined in series or in parallel with a sedimentation device or the like.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of a liquid cyclone of sediment or muddy water or stabilized muddy water and a downstream outlet control device thereof.

FIG. 2 is a side view of FIG.

FIG. 3 is an explanatory cross-sectional view of an outlet and a valve portion of FIG.

FIG. 4 is a sectional view of a small specific gravity measuring container. .

FIG. 5 is a cross-sectional view of the oscillator 36 having the bypass port closing valve 25 and the outflow control valve 5 of pressure suppression opening / closing type.

FIG. 6 is an explanatory view of a flat type vibrator for flat bottom flow.

FIG. 7 is a sectional explanatory view of an opening / closing damper outlet.

FIG. 8: Device for taking out sediment, powder particles, and sediment silo from the bottom of the sedimentation tank.

9 is an explanatory view of a combination of the bottom plate, the vibrator, and the conveyor of FIG.

FIG. 10:

FIG. 11 is a sectional explanatory view.

FIG. 12 is an explanatory view of a valve structure having a cover and its control system.

FIG. 13 is a sectional view of the outlet and a plan view of the valve body.

FIG. 14 is a plan view of a slight type damper.

FIG. 15:

FIG. 17 is a vertical sectional view.

FIG. 16:

18 is a cross-sectional view taken along the line AA of FIG. Or a plan view.

[Explanation of symbols]

 1 Muddy water inlet 2, 3 Bypass port or notch 5 Valve, or damper 6, 22, 23, 72 Vibrator that may also be used 7 Transmission rod to oscillator 10 Support point of rod scale structure 13 Cyclone 15 Control hole 18 Sediment discharge Means, air or hydraulic cylinder 20 Specific gravity measuring container fixed fulcrum 21 Tank bottom vibrator 24 Bottom outlet 25 Valve, perforated plate, slit plate, gallery, etc. 26 Overflow port 28 Dewatering sieve 33 Sedimentation or accumulated sediment 34 Lifting spring mechanism 53 Valve cover 78 Float 80 Flow path holding piece or spacer

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location C02F 11/00 ZAB A 7824-4D E21D 9/06 301 U 9021-2D

Claims (17)

[Claims] 1. When a suspension, a water-containing mud or powder is discharged from an outlet of an apparatus or a container, a valve or a valve body that acts like a lid is provided at the outlet, and the valve or the side wall of the outlet is provided. A particle-based outflow control method in which an auxiliary opening is opened or a spacer for securing a leak passage is provided to change the valve opening degree to control the outflow amount. 2. In a settling device for supplying a suspension, hydrous mud or powder to a liquid cyclone or a settling device having a bottom outlet and removing the sediment from the bottom outlet, a lid or a valve is provided at the bottom outlet. A valve is provided with an auxiliary opening on the side wall of the valve or the outlet, or a spacer for securing a leak channel is provided, and opening / closing of the valve is linked to the weight of the tank located upstream or downstream of the outlet, or inserted into the tank. Particle-based outflow control method that controls the outflow rate by changing the valve opening in conjunction with the buoyancy of the float that detects the sediment interface. 3. A valve body provided at a lower outlet of a liquid cyclone or a lower outlet of a lower cyclone of a liquid cyclone when a muddy water or a water-containing sludge is treated by a liquid cyclone, and a valve located downstream of the outlet. In the control device consisting of the specific gravity measuring container of the effluent, the valve opening is caused by the displacement of the valve body which is linked to the weight obtained by flowing the effluent into the measuring container or linked to the buoyancy of the float inserted in the measuring container. Flow cyclone outflow control method that changes flow rate to control outflow rate. 4. When treating muddy water or water-containing sludge in a sedimentation tank, a valve element provided at the lower outlet of the sedimentation tank or the lower outlet of the lower outflow from the sedimentation tank and a position downstream of the outlet. In the control device consisting of the specific gravity measuring container of the effluent, the valve opening is caused by the displacement of the valve body which is linked to the weight obtained by flowing the effluent into the measuring container or linked to the buoyancy of the float inserted in the measuring container. Flow control method of settling tank by changing flow rate to control flow rate. 5. The settling tank or liquid cyclone control device according to claim 3 or 4, wherein the outlet opening is changed by interlocking with the valve body by displacement of a measuring container or a float supported by a movable arm or a spring. 6. A valve opening is provided in the vicinity of the take-out port or in the valve body by providing a gap or hole that is not closed by valve displacement, and the valve opening degree is changed by a change in specific gravity of effluent or a change in viscosity.
The particle-based outflow control device described. 7. A device for changing a take-out opening by transmitting a displacement of a measuring container or a float, which varies depending on the specific gravity or viscosity of the effluent to the valve body by an arm or a spring, to change screw opening, guide movement, pin movement, and fulcrum of a control system. 5. The outflow rate is controlled by adjusting the reference position, adjustment position or opening of the valve by one or a combination of means selected from movement, movement of weight, adjustment of weight or adjustment of spring strength. Particle system outflow control device. 8. The particle-based outflow control device according to claim 1, wherein an auxiliary outflow hole is provided near the bottom of the specific gravity measuring container. 9. A support structure in which the movement of the valve is one of a vertical movement, a swing movement and a slide movement or a combination movement thereof, and a component for restraining an undesired displacement of the valve is provided and a passage is opened substantially downstream. 5. The particle-based outflow control method according to claim 1. 10. The particle-based outflow control device according to claim 1, wherein the bottom of the sieve that has passed through a vibrating sieve that removes particles having a particle size that blocks the auxiliary outflow holes is supplied to a sedimentation tank or a liquid cyclone. 11. The particle system controller according to claim 2, further comprising an indicator for converting the displacement of the specific gravity measuring container or the float provided separately from the valve driving source or the valve driving source into a specific gravity scale. 12. A flow control device comprising a valve body having a flow passage or an auxiliary flow passage and a vibrator inserted through the flow passage. 13. The particle-based outflow control device according to claim 1, wherein a vibrator is inserted into the bottom or flow path of the supply container to the outflow port through the auxiliary flow path or the insertion port. 14. The liquid cyclone control device according to claim 3, comprising a liquid cyclone, a movable valve mechanism, a specific gravity measuring mechanism and a vibrating mechanism. 15. The particle-based outflow control device according to claim 1, wherein a cover or a case for preventing scattering is attached to the outflow port and the valve. 16. The particle system outflow control device according to claim 1, wherein an outflow port having an enlarged cross-sectional area is provided toward the outlet side. 17. The muddy water or hydrated mud is selected from mud particles used for ground excavation, bentonite suspension, sludge, dredging mud, and soil contaminated with harmful substances.
5. The settling tank or liquid cyclone control method as described in 4 above.