JP3827589B2 - Mud reforming equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, mud generated in construction work such as propulsion work, shield work, foundation work, dredging work, gravel and crushed stone is mixed with additives to granulate or solidify the mud. The present invention relates to a mud reforming processing apparatus such as a mud granulation processing apparatus or a mud solidification processing apparatus that performs continuous reforming processing.
[0002]
[Prior art]
Mud soil, which is soft soil with high water content, is generated by construction work such as propulsion work by pipe propulsion machine, shield work by shield excavator, foundation work by vertical hole excavator, construction work such as dredging work, gravel and crushed stone. After being dehydrated as industrial waste, it is disposed of in landfills at the final disposal site. Such mud treatment is extremely uneconomical because dewatering is expensive and the dewatered mud must be discarded without being reused as industrial waste. Even if the mud is treated and disposed of in this way, recently the difficulty of locating the final disposal site for industrial waste has become serious.
[0003]
Against this background, there is an increasing need to recycle mud generated from construction work. In response to these requests, various mud reforming treatment equipment that modifies so that the mud can be reused by adding an appropriate additive for modifying the mud and mixing it with mud that had not been used before. Development is underway. In this type of mud reforming treatment equipment, conventionally, cement-based or lime-based solidification materials are mixed with mud at the mud generation site and solidified, and the mud is converted into soil equivalent to high-strength general construction residual soil. A mud solidification processing apparatus for reforming is generally known. When the mud is reformed by such a mud solidification processing device, the mud can be reused for various purposes such as roadbed materials, backfill soil, residential land preparation soil, bank embankment and the like.
[0004]
In recent years, an attempt has been made to develop a mud granulation processing apparatus that uses an agglomerate as an additive and mixes the agglomerate with the mud at the site where the mud is generated to granulate the mud. When such a granulation process is performed on the mud, the granular mud product generated by the granulation process can be reused as a roadbed material. Moreover, in that case, if the strength of the granular mud product is increased, the added value of the treated mud can be increased, such as being reusable as a roadbed material, and further, its application can be expanded. Until now, this type of mud granulation has been carried out in a batch system, but the applicant has been developing mud granulation equipment that can continuously process mud in response to the large amount of mud generated during construction work. ing.
[0005]
Any of the mud reforming treatment apparatuses that continuously modify the mud by mixing the mud with an additive such as an agglomerated material and a solidifying material as described above, a multi-shaft agitator that mixes the mud and the additive, A mixing device such as a rotating drum, a quantitative supply pump that supplies mud into the mixing device, a mud supply device such as a screw conveyor, and an additive supply device such as a quantitative supply pump that supplies additive material into the mixing device And. By the way, various impurities are mixed in the mud depending on the type of mud to be modified. For example, mud generated in propulsion construction includes gravel and gravel as impurities. The mud generated from dredging is not only gravel and clay blocks, but also daily garbage. When processing mud continuously, remove such impurities with a separating device such as a vibrating screen, then store the mud in a mud storage device such as a mud tank or mud hopper, and supply the mud into the mixing device using the mud supply device. To do.
[0006]
[Problems to be solved by the invention]
However, even if the impurities in the mud are removed by the separation device in this way, they may not be completely removed. Then, the mud stays in the mud supply channel by holding the mud in the mud intake port or the bent portion in the mud supply channel for supplying the mud into the mixing device, and is supplied to the mixing device as a result. The amount of supplied mud is significantly reduced, and the amount of mud treated by the mud reforming apparatus is reduced. In particular, mud generated in construction work needs to be processed in large quantities and quickly, so the occurrence of such a situation must be detected and dealt with promptly. Moreover, if the occurrence of such a situation is overlooked, a large amount of additive will be supplied by the additive supply device compared to the amount of mud actually processed, and expensive additive will be used wastefully. It is extremely uneconomical.
[0007]
The present invention is intended to solve such problems of the conventional technique, and its technical problem is to prevent a decrease in the processing amount and wasteful use of additives when the mud is reformed. An object of the present invention is to provide a mud reforming apparatus that can perform the above-described process.
[0008]
[Means for Solving the Problems]
  In order to achieve these technical problems, the present invention
  A mixing device for mixing the mud and the additive, a mud supply device for supplying the mud into the mixing device, and an additive supply device for supplying the additive into the mixing device were supplied by the mud supply device. In the mud reforming processing apparatus that mixes the mud with the additive supplied by the additive supplying apparatus and mixes the mud with the mixing apparatus to process the mud,
  A flow rate detector for detecting the flow rate of mud in the mud supply channel is installed in the mud supply channel for supplying mud into the mixing device by the mud supply device.And a control device for stopping the operation of the mud supply device and the additive supply device when the detection value at the flow rate detector is not more than the set value. The control device was configured to reverse the mud supply device after the operation was stopped..
[0009]
  The mud reforming apparatus of the present invention is provided with a flow rate detector for detecting the flow rate of mud in the mud supply channel.And a control device that stops the operation of the mud supply device and the additive supply device when the detection value at the flow rate detector falls below the set value.Because,mudThe mud flow rate in the soil supply channelMore than the allowable limitWhen it fallsThe operation of the mud supply device and the additive supply device is automatically stopped by the control device. As a result, it is possible to quickly restore the mud supply channel where the mud has stagnated, and it is possible to clearly communicate to the operator that the mud supply channel needs to be repaired, and the additive material is meaningless. Supply can be stopped reliably.
[0010]
  After the operation of the mud supply device and the additive supply device was stopped by the control device in this way, the control device was configured so as to reversely rotate the mud supply device. It can be removed mechanically by driving the mud supply device without manual intervention, and can be easily removed.Also,As described above, since the operation of the mud supply device and the additive supply device is automatically stopped, it is clearly communicated to the operator that the mud supply path needs to be repaired. When the contaminants cannot be removed by the reverse rotation method, the muddy soil supply path can be repaired quickly by another method. As described above, according to the mud reforming apparatus of the present invention,Reduce the amount of processing and wasteful use of additives when modifying mudIt can be surely prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be clarified below by describing specific examples showing how the present invention is actually embodied based on FIGS. 1 to 10. Here, a specific example of the present invention will be described by taking as an example the case where the present invention is embodied in a mud granulation processing apparatus under development by the applicant, which is a kind of mud reforming processing apparatus. FIG. 1 is a plan view showing a mud granulation apparatus according to an embodiment of the present invention in a partially broken view, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 1, FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 1, FIG. 6 is a diagram showing a modification of the III part of FIG. FIG. 8 is a block diagram of a control apparatus provided in the mud granulation processing apparatus of FIG. 1, FIG. 8 is a flowchart showing a first control method implemented by the control apparatus of FIG. 7, and FIG. 9 is implemented by the control apparatus of FIG. FIG. 10 is a diagram for explaining the second control method implemented by the control device of FIG. 7.
[0012]
In the present embodiment, the mud granulation processing device represented by reference numeral 1 is a multi-shaft stirrer 70 which will be described in detail later, and on the multi-shaft stirrer 70 from the rear to the front as shown in FIGS. The mud supply means 30, the first agglomerated material supply means 40, the second agglomerated material supply means 50, and the solidified material supply means 60, which are sequentially arranged, are provided, and the operation control panel 2 is provided as an attachment. Yes. When using this mud granulation processing apparatus 1, the mud storage tank 3 and the belt conveyor 4 are arranged as ancillary facilities. In the mud granulation processing apparatus 1 of this embodiment, in order to achieve the above technical problem, the flow rate detector 10 and the control device 20 are specially provided. The basic technical contents related to the incidental facilities will be described in detail below. In the present specification, the technical contents are described with the side into which mud is introduced being “rear” and the side from which the granulated mud is discharged is “front”.
[0013]
In FIG. 1 to FIG. 6, 1 is a mud granulation processing apparatus as a mud reforming processing apparatus described in detail below, and 2 is a pushing process in which the agglomerate is mixed with the mud to granulate the mud. An operation operation panel that is provided with operation means such as buttons to drive and control the mud granulation processing apparatus 1 and various drive units of the belt conveyor 4 by operating the mud granulation processing apparatus 1, and 3 is a mud storage apparatus that stores mud generated in construction work or the like. The mud storage tank 4 is a belt conveyor for transferring the granular mud product granulated by the multi-shaft agitator 70 and discharged from the mud discharge port 70c to a transport device such as a truck in front.
[0014]
The mud storage tank 3 may be a hopper provided with a screen for removing impurities on the mud inlet. As shown in FIG. 2, the belt conveyor 4 is installed such that the chute 4 a is positioned below the mud discharge port 70 c of the multi-shaft agitator 70, and is inclined upwards forward by being supported by the feet 4 b. is doing. When the belt conveyor 4 is installed in such a manner, after receiving the granular mud product, which is a product of the mud granulated by the multi-shaft agitator 70, from the mud discharge port 70c, it is received by the chute 4a, It is transferred by the belt conveyor 4 so that it can be automatically carried out to a loading platform such as a truck.
[0015]
30 is a mud supply means for supplying the mud in the mud storage tank 3 into the multi-shaft stirrer 70, 31 is a mud by a fixed feed pump capable of quantitatively supplying the mud into the multi-shaft stirrer 70 with a desired supply amount. The supply device 32 is a mud suction pipe for sending the mud in the mud storage tank 3 to the suction side of the mud supply device 31, and 33 is a mud supply unit 70b of the multi-shaft agitator 70 for discharging mud discharged from the mud supply device 31. A mud discharge pipe 34 for sending to the muffler 34 is a mount for supporting the mud supply device 31.
[0016]
The mud supply means 30 includes a mud supply device 31, a mud suction pipe 32, and a mud discharge pipe 33, and mud in the mud storage tank 3 is sucked through the mud suction pipe 32 by the mud supply apparatus 31. It supplies into the mud supply part 70b of the multi-axis stirrer 70 through the discharge piping 33. When a fixed amount supply pump is used for the mud supply device 31 constituting the mud supply means 30, a desired amount of mud corresponding to the amount of mud to be granulated by the multi-shaft stirrer 70 is converted into the multi-shaft stirrer. A fixed amount can be supplied into the 70 mud supply section 70b.
[0017]
When the mud to be treated is limited to mud-like mud having a remarkably high water content ratio, a fixed amount supply pump such as a tube pump (squeeze pump) may be used for the mud supply device 31. Here, although the fixed amount supply pump is used for the mud supply device 31, a screw conveyor having the same structure as that of the solidifying material supply device 62 shown in FIG. 4 described later can also be used. Even when a screw conveyor is used, a desired amount of mud corresponding to the amount of mud can be quantitatively supplied into the multi-shaft agitator 70 by controlling the rotational speed of the screw blades.
[0018]
40 is a first aggregating material supply means for supplying a first agglomerated material in the multi-shaft stirrer 70 for conjugating the free water in the mud between the soil particles, and 41 is for storing the first agglomerated material. The first agglomerated material storage tank 42 is a first agglomerated material that can quantitatively supply the first agglomerated material in the first agglomerated material storage tank 41 to the multi-shaft agitator 70 at a desired supply amount. A supply device 43 is connected to the first agglomerate storage tank 41 and the first agglomerate supply device 42. A first agglomerate suction pipe 44 is connected to the first agglomerate supply device 42 and is multiaxially stirred. This is a first aggregate discharge pipe introduced into the first aggregate supply section 70d of the machine 70.
[0019]
The first agglomerated material supply means 40 includes a first agglomerated material storage tank 41, a first agglomerated material supply device 42, a first agglomerated material suction pipe 43, and a first agglomerated material discharge pipe 44. Has been. The first agglomerated material supply means 40 sucks the solution-like first agglomerated material in the first agglomerated material storage tank 41 through the first agglomerated material suction pipe 43 by the first agglomerated material supply device 42. After that, the first aggregated material supply pipe 70 d of the multi-shaft stirrer 70 is supplied through the first aggregated material discharge pipe 44.
[0020]
50 is a second agglomerate supplying means for supplying a second agglomerated material for granulating the mud mixed with the first agglomerated material into the multi-axial agitator 70, and 51 is a reservoir for the second agglomerated material. A second agglomerated material storage tank 52 for supplying the second agglomerated material in the agglomerated material storage tank 51 to the multi-shaft stirrer 70 with a desired supply amount. An apparatus 53 is a second agglomerated material suction pipe for connecting the second agglomerated material storage tank 51 and the second agglomerated material supply device 52, and 54 is connected to the second agglomerated material supply device 52, and is a multiaxial agitator. This is a second agglomerated material discharge pipe introduced into the second agglomerated material supply unit 70e.
[0021]
The second agglomerated material supply means 50 includes a second agglomerated material storage tank 51, a second agglomerated material supply device 52, a second agglomerated material suction pipe 53, and a second agglomerated material discharge pipe 54. Has been. The second agglomerated material supply means 50 sucks the solution-like second agglomerated material in the second agglomerated material storage tank 51 through the second agglomerated material suction pipe 53 by the second agglomerated material supply device 52. After that, it is supplied into the second aggregated material supply part 70e of the multi-axis stirrer 70 through the second aggregated material discharge pipe 54.
[0022]
In the example shown here, as the first and second agglomerates, a solution-like agglomerate mixed with water is used to supply a fixed amount into the multi-shaft agitator 70. The devices 42 and 52 use positive displacement pumps that can appropriately adjust the discharge capacity in accordance with the rotational speed. When such a volumetric pump capable of quantitative supply is used for the aggregate supply devices 42 and 52, an appropriate amount of aggregate is supplied in accordance with the type of aggregate used, the water content of the mud, the soil quality, and the like. In addition, the mixing ratio of the aggregate to the mud can always be maintained at an appropriate value. Here, a solution-like aggregate material is used for the first aggregate material and the second aggregate material. However, a solid aggregate material is used, and the same as the solidifying material supply device 62 shown in FIG. A fixed amount may be supplied into the multi-axis stirrer 70 by a screw conveyor having a structure.
[0023]
The first agglomerate and the second agglomerate supplied into the multi-axis stirrer 70 function to agglomerate the mud to be treated and granulate the mud, that is, to granulate the mud. The first agglomerate is used as an indispensable component when granulating the mud, and the second agglomerate can be omitted depending on the soil quality of the mud to be treated. When the water content ratio of the mud is not as high as about 150% or less (the weight of water is 150 with respect to the weight of dry earth and sand of 100), the amount of the first agglomerate added to the mud is 0.2 to 0.3. A very small amount of about% by weight is sufficient. The second aggregate may not be added in some cases, but even if it is added, a small amount is sufficient. The aggregating material will be described in detail later.
[0024]
  60 is a solidifying material supply means for supplying a solidified material for solidifying the granulated mud into the multi-shaft stirrer 70, 61 is a solidifying material hopper for storing the solidified material, and 62 is a solidifying material hopper in the solidifying material hopper 61. A solidifying material supply device 62e by a screw conveyor capable of quantitatively supplying the solidified material to the multi-shaft stirrer 70, for discharging the solidified material carried by the solidifying material supply device 62 and supplying it to the multi-shaft stirrer 70. The solidification material discharge unit 63 of the solidification material supply device 62, the solidification material hopper 61 can be installed on the groundTo doIt is a support frame for.
[0025]
The solidifying material supply means 60 is configured by providing a solidifying material hopper 61 and a solidifying material supply device 62. This solidifying material supply means 60 sends the solidified solid material in the solidifying material hopper 61 to the solidifying material discharge unit 62e by the solidifying material supply device 62 and supplies it to the solidifying material supply unit 70f of the multi-shaft agitator 70. . Since a solid material is used as the solidifying material, a screw conveyor as shown in FIG. 4 is used as the solidifying material supply device 62. The solidified material supply device 62 by the screw conveyor is configured by covering the periphery of the screw blades 62c with a casing 62b and fixing a rotation driving device 62a for rotationally driving the screw blades 62c to one end of the casing 62b. Further, a solidification material supply port 62d is provided below the solidification material hopper 61 on one end side of the casing 62b, and a solidification material discharge portion 62e is provided on the other end side of the casing 62b.
[0026]
The solidifying material supply device 62 quantitatively supplies an appropriate amount of the solidified material according to the required quality of the granular mud product so that the mixing ratio of the solidified material to the mud can be maintained at an appropriate value. The solidifying material supplied into the multi-shaft stirrer 70 serves to modify the mud so as to increase the strength of the granular mud product, and for example, a cement-based or lime-based solidifying material performs such a function.
[0027]
When such solidified material is added to the mud and mixed, digestion and absorption reaction (hydration reaction) and exothermic reaction occur due to the quicklime in the solidified material, and moisture in the mud is absorbed into the quicklime and evaporated by heat. Reduce water content. Sediment with a reduced water content is not just dehydrated, but also agglomeration of soil and pozzolanic reaction by calcium ions in quicklime, and carbonation by residual quicklime that was not involved in this reaction. As a result, the strength is increased and solidified, and it is reformed so that it does not re-sludge even if it is reused where water enters.
[0028]
The supply of the solidified material into the multi-shaft stirrer 70 is performed mainly for the purpose of increasing the strength of the granular mud product by utilizing such a reaction, and is performed as necessary. For example, when using a granular mud product as a roadbed material or roadbed material on the road surface where strength is required, a solidifying material should be added to improve the strength and used as planting soil that does not require strength. When doing so, it is not always necessary to add a solidifying material. Moreover, when using for the use which dislikes alkalinity, it is made not to add a solidification material. In this manner, whether or not the solidifying material is added and the amount thereof are selected according to the quality of the granular mud product required by the orderer and the purpose of use.
[0029]
Here, the agglomerated material supplied to the multi-shaft stirrer 70 will be mentioned. Agglomerates are agents that help make it easier to aggregate the soil particles in the mud. This agglomerated material can be broadly classified into inorganic agglomerated materials and organic polymer agglomerated materials. Among these, representative examples of inorganic agglomerates include iron such as ferric sulfate, ferric chloride, aluminum sulfate (sulfate band), polyferric chloride (PFC), polyaluminum chloride (PAC), or the like. Mention may be made of aluminum compounds. This inorganic aggregate is mainly used in combination with an organic polymer aggregate as a coagulation aid or coagulation aid.
[0030]
As the organic polymer aggregate, a synthetic polymer aggregate is mainly used, and the synthetic polymer aggregate can be classified into nonionic, anionic and cationic ones. Among these, nonionic ones are water-soluble polymers having almost no dissociating group in the molecule, and have an amide group, a hydroxyl group, an ether group or the like as a hydrophilic group. An anionic one is a water-soluble polymer having a negative charge in water, and has a carboxyl group, a sulfone group or the like as a dissociating group. The cationic one has an amino group in the molecule, and gives a positive charge to the polymer in water by dissociation of the amino group. Nonionic and anionic synthetic polymer aggregates usually have a higher cohesive force as the molecular weight is higher. Typical examples of nonionic and anionic synthetic polymer aggregates include polyacrylamide and hydrolysates thereof. A representative example of the cationic synthetic polymer aggregate is polyaminoalkyl (meth) acrylate.
[0031]
When the agglomerated material is properly mixed with the mud, the agglomerates aggregate the soil particles in the mud and entangle them so that free water between the soil particles is wrapped between the aggregated soil particles. Therefore, unless the water content ratio of the mud is remarkably high, the soil particles are gathered in an apparently dry state with less moisture on the surface side, and a mud granule in a non-sticky state is generated.
[0032]
In general, soil particles have an electric double layer composed of a fixed layer surrounding the outside and a diffusion layer (counter ion portion) surrounding the outside and having a high hydrogen ion concentration. When two soil particles having such an electric double layer come close to each other and the two diffusion layers overlap each other, the ion concentration of the overlapping diffusion layers increases, and as a result, the soil particles repel each other and the soil is repelled. Inhibits particle assembly. Therefore, many soil particles are dispersed to form a mud. In short, mud is composed of a large number of fine soil particles and free water between the soil particles. However, since the surface of the soil particles is generally negatively charged, the soil particles repel each other and are stable. As a result, it keeps the muddy mud without getting hardened. Therefore, in order to facilitate the assembly of soil particles in the mud, suppression of the total electric charge of the electric double layer and the compression of the electric double layer (thinning the electric double layer thinning), which is an impediment to the aggregation ), And mud can be agglomerated by suppressing or compressing the total electric charge of the electric double layer.
[0033]
Of these, in order to suppress the total charge of the electric double layer, it is effective to neutralize the charge so as to reduce the total charge amount as much as possible. It can be selected from synthetic polymer aggregates and inorganic aggregates. Moreover, the aggregating material useful for compression of the electric double layer can be selected from inorganic aggregating materials. Further, the aggregation mechanism includes cross-linking condensation having a principle different from that of the above aggregation mechanism. This cross-linking condensation aggregates soil particles by adsorption cross-linking (ionic bonds, hydrogen bonds) to the soil particles by polymer functional groups, far exceeding the suppression of total electric charge of the electric double layer and aggregation by compression. Demonstrate cohesion. As the aggregating material for carrying out the cross-linking condensation, an appropriate material is selected from nonionic, anionic and cationic aggregating materials.
[0034]
The agglomerates described above are used for the first agglomerated material or the second agglomerated material, the purpose of the agglomerated material, the kind of mud, whether the mud is organic or inorganic, the mud is clay, silt Depending on the properties of the mud, such as the soil particle diameter of the mud, the water content ratio of the mud, etc. For example, ordinary mud can be agglomerated with anionic or nonionic agglomerates, but some mud generated in construction work has bentonite added during construction, and such mud Can not be granulated only with an anionic or nonionic agglomerated material, an anionic or nonionic material is used as the first aggregating material B, and a cationic material is used as the second aggregating material C. By adding things, the mud is granulated. In addition, the performance of the polymer agglomerates is highly dependent on PH, so that when mud is acidic, it is cationic or nonionic, and when it is alkaline, anionic or nonionic is used. Consider using nonionic ones.
[0035]
The first aggregating material and the second aggregating material both act to agglomerate mud, but the first agglomerated material mainly serves to conjugated free water in the mud between the soil particles and treats it. Depending on the soil quality of the mud, an appropriate material is selected from the aggregates as exemplified above. As described above, the first agglomerate functions to aggregate the soil particles in the mud and conjugated the free water in the mud between the soil particles. Therefore, depending on the soil quality of the mud, the agglomerate may be appropriately selected. For example, the mud can be granulated without using the second aggregate. The second agglomerated material works together to promote the granulation of the mud when the mud is not sufficiently granulated just by stirring and mixing the mud with the first agglomerated material. Select in relation to. Here, an example in which the second agglomerate is used in combination with the first agglomerated material assuming that the mud soil is difficult to be granulated depending on the single use of the first agglomerated material is shown below.
[0036]
According to the experiment, when an anionic acrylic synthetic polymer compound is used as the first aggregating material and a cationic basic polyinorganic salt is used as the second aggregating material, depending on the single use of the aggregating material, Mud that could not be granulated could also be granulated. The acrylic synthetic polymer compound as the first aggregating agent has a carboxyl group as a dissociating group (functional group), and this hydrophilic dissociating group is markedly adsorbed by cross-linking and adsorbing many soil particles in the mud. Demonstrate cohesive effect.
[0037]
Further, some mud soil can be granulated even if the first aggregate is used alone without using the second aggregate. An example is mud called cleaning sludge. Gravel and crushed stone are produced by classifying rock fragments and soil cut out from a mountain with a classifier such as a vibrating screen to adjust the sediment particle size to a predetermined size and then washing with water. Is a mud with a large amount of uniform soil particles, which is a concentrated mud produced at this time.
[0038]
Next, the technical content of the multi-shaft stirrer 70 that adds such agglomerated material and solidified material to the mud and stirs and mixes will be described.
[0039]
70 is a multi-shaft stirrer in which a plurality of agitators 71 are arranged in parallel in the casing 70a so that the mud and agglomerate can be stirred and mixed while being sheared and crushed by the stirring blades 71b. A fixed casing for accommodating the stirrer 71, 70 b is provided on the rear end side of the multi-shaft stirrer 70 and supplied with mud for granulation treatment, and 70 c is provided on the front end side of the multi-shaft stirrer 70. A mud discharge port for discharging the mud granulated by the multi-shaft agitator 70, 70d is provided with a first agglomerated material supply unit 70e provided at a front position of the mud supply unit 70b, and 70e A second agglomerated material supply unit 70f is provided at a position in front of one agglomerated material supply unit 70d and supplied with a second agglomerated material, and 70f is provided at a position in front of the second agglomerated material supply unit 70e. Supplied through the solidification material discharge part 62e. A solidifying material supply section.
[0040]
The multi-shaft stirrer 70 is also referred to as a paddle mixer, and a plurality of stirrers 71 described later are provided side by side as shown in FIG. It is configured to be able to stir and mix with the aggregate. As shown in FIG. 1, the multi-shaft stirrer 70 includes a first agglomerated material supplying unit 40, a second agglomerated material supplying unit 50, and a rear side of the mud discharge port 70c from the front of the mud supply unit 70b. The solidifying material supply means 60 is sequentially provided to communicate with the inside of the casing 70a through the one aggregate material supplying section 70d, the second aggregate material supplying section 70e, and the solidifying material supply section 70f. The mud supplied inside is granulated and discharged to the mud discharge port 70c.
[0041]
Reference numeral 71 denotes a stirrer which is configured by fixing a plurality of independent stirring blades 71b inclined downward toward the front to the rotating shaft 71a, and a plurality of the stirrers 71a are rotated by a rotation driving device 71c. A rotating shaft, 71b is a stirring blade provided in large numbers at a predetermined interval on the rotating shaft 71a, 71c is a rotary drive device installed at the rear end portion in the casing 70a of the stirrer 71 and drives each stirrer 71, and 71d is a casing 70a. It is a bearing of the front-end part side of the rotating shaft 71a fixed to the front-end part.
[0042]
The rotating shaft 71a of each stirrer 71 is supported by a rotation driving device 71c and a bearing 71d, and is rotated by the rotation driving device 71c. Unlike the screw blades formed continuously in a spiral shape, the stirring blades 71b of each stirrer 71 are formed independently. The stirrer 71 is configured by fixing a large number of such independent stirring blades 71b to the rotating shaft 71a. As shown in FIG. 1, a large number of stirring blades 71 b are provided so as to incline downward toward the front and are arranged in parallel to each other. Since the numerous stirring blades 71b are inclined downward toward the front in this way, each time the mud taken in the casing 70a passes through each stirring blade 71b, the mud can be gradually moved forward. it can. The rotation drive device 71c is configured to be able to variably control the number of rotations, so that the number of rotations of the rotation shaft 71a of each stirrer 71 can be adjusted as appropriate.
[0043]
Therefore, the multi-shaft agitator 70 can transport the mud in the casing 70a with a transport amount corresponding to the rotational speed of the rotation drive device 71c, and further, rotationally driven according to the amount of mud generated at the construction site. By controlling the rotation speed of the device 71c, the amount of mud to be granulated can be adjusted as appropriate. In this mud granulation processing apparatus, the first aggregated material and the second aggregated material are related to the fact that the rotational speed of the rotation drive device 71c can be variably controlled to adjust the amount of mud processing. Since the agglomerated material supply devices 42 and 52 and the solidified material supply device 62 for quantitatively supplying the solidified material are provided, the agglomerated material supply devices 42 and 52 and the solidified material supply according to the amount of mud supplied by the mud supply device 31 are provided. By controlling the number of revolutions of the device 62, the first agglomerated material, the second agglomerated material, and the solidified material corresponding to the amount of mud supplied are quantitatively supplied, and the mixing ratio of the mud and these materials is set appropriately. Can be adjusted to a value.
[0044]
The multi-shaft stirrer 70 is configured by arranging a desired number of two or more stirrers 71 so that the rotating shafts 71a are parallel to each other. In that case, it arrange | positions so that many stirring blades 71b of each stirrer 71 may enter between the stirring blades 71b of the adjacent stirrer 71. FIG. That is, the stirrer blades 71b of each stirrer 71 wrap in the radial direction between adjacent ones, and the stirrer blades 71b of each stirrer 71 are phased in the rotational axis direction with the stirrer blades 71b of the adjacent stirrer 71. Align so that they do not interfere with each other. As described above, the stirring blades 71b of the pair of adjacent stirrers 71 are provided so that each stirring blade 71b is inclined, and even when rotating in any direction of the same direction and the opposite direction, The mud can be taken up and sheared by the stirring blade 71b.
[0045]
Each stirring blade 71b stirs the mud when shearing and crushing the mud in this way. Moreover, each stirring blade 71b moves the mud forward as described above, but also stirs the mud at this time. That is, the mud moves with deformation when being moved forward by the stirring blade 71b, and when the mud is deformed, relative movement occurs between the soil particles in the mud. Therefore, even when the mud is transported by the multi-shaft stirrer 70, the soil particles are constantly stirred, and as a result, the mud is stirred and mixed with the first agglomerated material, the second agglomerated material, and the solidified material. The Rukoto.
[0046]
By the way, comparing the multi-shaft stirrer 70 having such a positive stirring function with a screw conveyor that is often used for transporting mud, the screw conveyor has a function of moving mud exclusively and has a function of shearing and crushing mud. Of course, it does not have a positive stirring function. That is, when the mud is transported, the screw conveyor moves the mud forward in parallel with the screw blades and casing without being deformed. However, it does not have a positive stirring function.
[0047]
In this mud granulation processing apparatus, the mud is not shattered by such a screw conveyor, and the aggregate is supplied into the multi-shaft stirrer 70 while being transported by the multi-shaft stirrer 70. While being subdivided, the agitation blade 71b can be actively agitated with the operation of both shearing and crushing the mud, and this can dramatically increase the number of times the mud touches the agglomerated material, Agglomerated material can be uniformly mixed with mud. Therefore, the mud is reliably aggregated when discharged to the mud discharge port 70c. The agglomerated mud is in the form of a granule having a dry surface with apparently little moisture, although free water is conjugated between the agglomerated soil particles. Also, for the solidified material, the mud is actively stirred by the same mechanism as described above, so that the number of times of contact of the mud with the solidified material can be dramatically increased. Can be mixed uniformly.
[0048]
The mud in the mud storage tank 3 supplied by the mud supply means is granulated by the mud granulation apparatus using the multi-shaft stirrer 70. The operation when the granulation is performed will be described. In explaining the operation, for convenience of explanation, it is first assumed that only the first aggregated material and the second aggregated material are supplied without supplying the solidified material from the solidified material supply means 60. I will explain.
[0049]
First, the mud supply device 31 is driven while the multi-shaft stirrer 70 is rotationally driven to supply the mud into the multi-shaft stirrer 70 from the mud supply section 70b. Further, the first agglomerated material supply device 42 is driven to supply the first agglomerated material from the first agglomerated material supply unit 70 d into the multi-axis stirrer 70, and the solidifying material supply device 62 is stopped. Then, the multi-shaft stirrer 70 wraps the mud together with the first agglomerate in the stirring blade 70b, and conveys it to the mud discharge port 70c side while shearing and crushing. At this time, in addition to shearing and crushing the mud with the stirring blade 70b, the mud is actively stirred with the operations of both the shearing and crushing of the mud with the stirring blade 70b and the conveyance. The number of times of contact of the mud with the aggregate can be dramatically increased, and the first aggregate can be uniformly mixed with the mud. Therefore, the mud is surely aggregated, and free water can be evenly conjugated between the countless number of aggregated soil particles.
[0050]
  When the mud cannot be granulated by such agglomeration treatment, in parallel with supplying the first agglomerated material,Second aggregate supply device 52The second agglomerated material is supplied into the multi-shaft stirrer 70 from the second agglomerated material supply unit 70e by driving. Then, in the multi-axis stirrer 70, the second agglomerate is mixed with the mud with less moisture, which is agglomerated with the first agglomerate and conjugated with free water. That is, since the mud is actively stirred by the same mechanism as when the first agglomerated material is mixed with the mud, the number of times the mud touches the second agglomerated material can be dramatically increased. Similar to the agglomerated material, the second agglomerated material can be uniformly mixed with the mud. Therefore, the mud agglomerated by the first agglomerate is granulated by the second agglomerate when discharged to the mud discharge port 70c, and the granular mud product is discharged to the mud discharge port 70c by the belt conveyor 4. It is transferred to a transport device such as a truck.
[0051]
Thus, in this mud granulation processing apparatus, in both cases where the mud is granulated by the single use of the first agglomerate and the mud is granulated by the combined use of the second agglomerate, Since the granulation treatment can be performed continuously and effectively by the multi-axis stirrer 70, the mud can be granulated in a large amount. As a result, the added value of the treated mud can be increased and its application can be expanded.
[0052]
As mentioned above, although it demonstrated as what does not supply a solidification material to the multi-axial stirrer 70, when it is necessary to raise the intensity | strength of a granular mud product, when performing the above granulation processes, it is 1st aggregation. In parallel with the supply of the material and the second agglomerated material, the solidification material is supplied from the solidification material supply unit 70 f into the multi-axis stirrer 70 by driving the solidification supply device 62. Then, since the multi-shaft agitator 70 agitates the mud actively by the same mechanism as when the first agglomerated material is mixed with the mud, the number of times the mud touches the solidified material can be dramatically increased. As with the first agglomerated material, the solidified material can be uniformly mixed with the mud. As a result, the digestion and absorption reaction of the quicklime component in the solidified material proceeds while effectively utilizing a part of the free water in the mud in the closed heat insulating space in the casing 70a of the multi-shaft stirrer 70, The mud granulated with the agglomerate can be solidified, thereby increasing the strength of the granular mud product.
[0053]
In the case where the multi-axis stirrer 70 is configured by arranging a plurality of stirrers 71 in parallel, the figure shows an example in which two stirrers 71 are arranged in parallel, but three or more stirrers 71 are arranged in parallel. Even when installed, only the amount of mud treated changes, and the essential function of the multi-shaft agitator 70 itself is basically the same as when two are installed in parallel. Therefore, the description about the arrangement | positioning etc. of the aggregate supply port of each aggregate supply port 43,53 can be applied also when three or more stirrers 71 are arranged in parallel. Here, an example in which the first agglomerated material supply means 40, the second agglomerated material supply means 50, and the solidified material supply means 60 are provided in the multi-shaft stirrer 70, but depending on the soil quality of the mud such as washing sludge, Since the mud may be granulated by using the first agglomerated material alone, the second agglomerated material supplying means 50 and the solidified material supplying means 60 can be omitted as appropriate. In that case, the second agglomerated material supply means 50 and the solidified material supply means 60 are provided separately or together in an agitation apparatus separately provided as an attachment, and mud aggregated with the first agglomerated material is used as the second agglomerated material or The mud can also be sent to the attachment for processing only when it is desired to process with a solidifying material.
[0054]
In such a mud reforming treatment apparatus, when the mud stays in the mud supply path extending from the suction port of the mud suction pipe 32 to the discharge port of the mud discharge pipe 33, the amount of mud processing is reduced, and particularly in the case of construction work. When a large amount of mud must be treated, it is necessary to treat a large amount within a predetermined period, which hinders the construction and work. In addition, if such a decrease in the amount of treated mud is overlooked, a large amount of an additive such as an agglomerated material or a solidified material is supplied in comparison with the actual amount of treated mud, so that an expensive additive is wasted. Is extremely uneconomical. In this mud reforming processing apparatus, in order to prevent the occurrence of such a situation, a flow rate detector 11 is specially provided in the mud supply path, and a control device 20 and a setting device 12 are provided in association therewith. Therefore, details of these technical contents will be described below.
[0055]
11 is a flow rate detector for detecting the flow rate of mud in the mud supply channel provided in the mud supply channel for supplying mud into the multi-shaft agitator 70 by the mud supply device 31, and 12 is mud in the mud supply channel. A setter for setting a set value Ni or the like relating to a mud flow rate or the like as a reference for determining stagnation of the mud, 13 is an electromagnetic switch for opening and closing a power circuit of an electric motor for driving the mud supply device 31, and 14 is an addition An electromagnetic switch that opens and closes the power supply circuit of each motor for driving the material supply devices 42, 52, and 62. Mud supply when the detected value N at the flow rate detector 11 is equal to or lower than the set value Ni. This is a control device that stops the operation of the apparatus 31 and the first agglomerated material supply device 42, the second agglomerated material supply device 52, and the solidified material supply device 62 as the additive material supply device.
[0056]
When the mud collected at the mud generation site is stored in the mud storage tank 3, it can be stored after removing impurities in the mud with a screen, but it cannot be completely removed. As shown in the figure, the contaminant M may be used in the mud supply path, and in particular, the contaminant M is introduced into the bent portion 32b of the mud suction pipe 32 and the bent portion 33b of the mud discharge pipe 33, including the suction port 32a of the mud suction pipe 32. Is easy to use. Then, the mud stagnates in the mud supply path, resulting in a decrease in the amount of mud processing. However, the processing amount does not decrease remarkably immediately, so the operator cannot detect the malfunction of the processing at an early stage. The flow rate detector 11 is provided in response to such a problem, and is used to quickly detect the stagnation of the mud in the mud supply channel and prevent the decrease in the amount of mud processing and the waste of additives. is there.
[0057]
The flow rate detector 11 may be of any type as long as it can detect the moving speed of the mud in the mud suction pipe 32 and the mud discharge pipe 33. In the example shown here, the flow rate of the mud is detected using an electromagnetic flow meter for the flow rate detector 11, and the flow rate of the mud flowing in the pipes 32 and 33 is calculated from the detected flow rate and the cross-sectional area of the pipes 32 and 33. I want to ask. As shown in FIG. 3, such a flow rate detector 11 can be provided at an intermediate portion of a vertically disposed mud suction pipe 32, and as shown in FIG. 6, a vertically disposed mud discharge pipe. It can also be provided in the middle part of 33. In short, if it is a place filled with mud when detecting the flow rate, it can be provided at a desired place in the mud supply path.
[0058]
In the example shown here, the control device 20 is provided in association with the flow rate detector 11, and the detection value N related to the mud flow rate at the flow rate detector 11 is equal to or less than the set value Ni set by the setting device 12. Sometimes, the operation of the mud supply device 31 and the additive supply devices 42, 52, 62 is automatically stopped, and the detection result of the flow rate detector 11 is input to the control device 20. The setting device 12 assumes the mud flow rate in the mud supply path, which can be regarded as mud staying in the mud supply path, and sets the upper limit value as the set value Ni. For example, a flow rate value of about 30 to 50% of the prescribed mud supply amount is set as the set value Ni.
[0059]
When the mud stays in the mud supply path, sometimes the mud is recovered only by temporarily stagnation. In such a case, the operation of the mud supply unit 31 and the additive supply units 42, 52, 62 is intentionally stopped. There is no need to let them. For this reason, when the detection value at the flow rate detector 11 is equal to or lower than the set value Ni due to stagnation of the mud in the mud supply channel, the time when this state continues to such an extent that it can be regarded as not temporary is assumed. Then, the lower limit value is set as the set value Ti. For example, a time of about 1 to 5 seconds is set as the set value Ti, and this set value Ti is set as necessary. The set values Ni and Ti related to the flow rate and time are preferably changed according to the conditions of the mud generation site, such as the properties of the mud and the types of impurities in the mud, so that the user can set the desired set values with the setting device 12. Make it configurable. The setting values Ni and Ti set by the setting device 12 are input to the control device 20.
[0060]
The control device 20 includes a CPU (Central Processing Unit) 21, a memory (storage device) 22, and an input / output interface 23. Although not shown, the control device 20 includes a timer. The control device 20 receives the detection value N detected by the flow rate detector 11 and the set value Ni related to the flow rate of the setting device 12 through the interface 23 by the operation of the setting device 12 and is temporarily stored in the memory 22. Further, depending on the control method, the set value Ti related to the time is similarly input by the setting device 12 and stored in the memory 22.
[0061]
The CPU 21 determines whether or not the detected value N is equal to or lower than the set value Ni by comparing the detected value N related to the mud flow rate in the flow rate detector 11 with the set value Ni related to the mud flow rate, and based on the determination result. Thus, an electrical signal for opening and closing the electromagnetic switches 13 and 14 is output through the interface 23. Further, when the set value Ti relating to the time is input, the time during which the state in which the detected value N at the flow rate detector 11 is equal to or lower than the set value Ni is continued is measured by the timer of the control device 20. It is also determined whether or not the state has continued for the set value Ti, and the electric signal is output in consideration of the determination result. In the example shown here, the setting device 12 and the control device 20 described above are operated together with other operation means for operating the mud granulation processing device 1 and the belt conveyor 4 so as to be convenient for maintenance and operation thereof. It is provided centrally on the panel 2 so that the set values Ni and Ti can be appropriately set by the operating means of the setting device 12.
[0062]
A first control method and a second control method implemented by the control device 20 will be described with reference to FIGS. 8 and 9, respectively.
[0063]
First, the first control method will be described based on FIG. This first control method is a method for controlling the mud granulation apparatus by inputting only the set value Ni relating to the mud flow rate among the set values Ni and Ti to the control device 20. When the setting value Ni is input to the control device 20 by operating the setting device 12, the setting value Ni is stored in the memory 22. Next, when the operation of the mud granulation processing apparatus is started, the flow rate of the mud in the mud supply path is detected by the flow rate detector 11, and the detected value N is sequentially input to the control device 20. Then, the CPU 21 of the control device 20 determines whether or not the detection value N detected by the flow rate detector 11 has decreased below the set value Ni related to the flow rate.
[0064]
As a result, when it is determined that the detected value N is lower than the set value Ni related to the flow rate, that is, when it is determined “YES”, the control device 20 issues a command to open the electromagnetic switches 13 and 14. The mud pump as the mud supply device 31, the first agglomerated material pump as the first agglomerated material supply device 42, the second agglomerated material pump and the solidified material supply device 62 as the second agglomerated material supply device 52. The solidifying material screw conveyor is stopped, and the operation of the mud granulating apparatus is stopped. If it is determined as “NO” otherwise, the operation of the mud granulating apparatus is continued by issuing a command to close the electromagnetic switches 13 and 14.
[0065]
The second control method will be described with reference to FIG. 9. This second control method inputs both the set value Ni related to the flow rate of mud and the set value Ti related to time to the control device 20, and the mud granulation processing device. It is a method to control. When the set values Ni and Ti are input to the control device 20 by operating the setting device 12, the set values Ni and Ti are stored in the memory 22. Next, when the operation of the mud granulation processing apparatus is started, the flow rate of the mud in the mud supply path is detected by the flow rate detector 11 and input to the control device 20. Then, the CPU 21 of the control device 20 determines whether or not the detection value N detected by the flow rate detector 11 has decreased below the set value Ni related to the flow rate, as in the example of FIG. It is also determined whether or not the state where the value has decreased below the set value Ni continues for the set value Ti.
[0066]
As a result, when it is determined that such a state continues for the set value Ti, that is, when it is determined “YES”, the control device 20 performs the mud pump, the first, similarly to the example of FIG. The agglomerated material pump, the second agglomerated material pump, and the solidified material screw conveyor are stopped, and the operation of the mud granulating apparatus is stopped. If it is determined as “NO” otherwise, the operation of the mud granulation apparatus is continued. FIG. 10 shows a state in which the detected value N relating to the mud flow rate at the flow rate detector 11 drops below the set value Ni with the vertical axis representing the mud flow rate and the horizontal axis representing time. This is an example of a graph that continues beyond. FIG. 10 shows a state where the operation of the mud granulation apparatus is stopped by the control device 20 when such a state continues for the set value Ti.
[0067]
  After the mud stagnation in the mud supply channel is detected by the first control method and the second control method as described above and the operation of the mud granulation processing apparatus is stopped, the mud supply channel in which the mud has stagnated. Repair work. Mud supply device to make the repair work simple.31The control device 20 is configured so that the mud pump is rotated in the reverse direction for a predetermined time, for example, about 20 to 30 seconds, and is driven to rotate in the direction to return the mud in the mud supply path to the mud storage tank 3.To do.When the control device 20 is configured in this manner, the mud supply device is not manually operated unless the foreign matter M is firmly held in the pipes 32 and 33 of the mud supply passage.31Can be removed mechanically by driving, and can be easily removed. Next, mud supply device31When the motor rotates forward under the control of the control device 20, the detected value N of the flow rate detector 11 eventually becomes larger than the set value Ni, and the operation of the mud granulation processing device is automatically restarted.
[0068]
When the foreign matter M can be used in the mud supply path, it is very often used in the vicinity of the suction port 32a of the mud supply path. In such a case, the foreign matter M can be easily made by stirring the vicinity of the suction port 32a. Can be removed. Further, when the foreign matter M is caught in the bent portions 32b and 33b of the mud supply path, when the foreign matter M cannot be removed by the above-described method of rotating the mud supply apparatus 32 in reverse, the mud supply path is formed. The pipes 32 and 33 are disassembled and removed.
[0069]
  As mentioned above, according to this mud granulation processing apparatus, the stagnation of the mud in a mud supply path is detected immediately, and the mud supply apparatus 31 and the additive supply apparatus 42,52, 62 can be stopped, so that it is possible to quickly repair the mud supply path in which the mud has stagnated, preventing a decrease in the amount of mud treated, and additives such as agglomerates and solidifying materials. Can be prevented in advance. As a result, when performing construction or work that requires treatment of a huge amount of mud, the amount of mud treatment is not reduced and the work or work is not hindered, and expensive additives are wasted. It can be used without cost and can be used for economical mud reforming.
[0070]
In addition to exhibiting these effects, not only when mud has stagnated in the mud supply channel, but also when mud is not supplied to the mud storage tank 3 and the amount of mud stored in the mud storage tank 3 is extremely reduced, The operation of the mud granulation processing apparatus will be stopped, and thereby the mud granulation processing apparatus can be idled to prevent waste of additives and electric power. Further, when the pipes 32 and 33 are blocked by mud and the mud no longer flows, the operation of the mud supply apparatus 31 is stopped, so that the mud supply apparatus 31 and the pipes 32 and 33 are damaged. It can also be prevented. In particular, when the control device 20 is configured to be able to implement the second control method, when the mud stagnation in the mud supply channel is a transient one that can be recovered immediately, the mud supply device 31 or Since the operation of the additive supply devices 42, 52, and 62 is not stopped, it is possible to limit the stop of these operations more than necessary.
[0073]
The technical contents of the present invention have been described above by taking the case where the present invention is embodied in the mud granulation processing apparatus under development by the applicant as an example, but the present invention describes a “mixing apparatus for mixing mud and solidified material. And a mud supply device for supplying mud into the mixing device and a solidifying material supply device for supplying the solidifying material into the mixing device, and the mud supplied by the mud supply device is supplied by the solidifying material supply device. The present invention can also be applied to a “mud solidification processing device that continuously modifies so as to solidify mud by mixing with a material and a mixing device”. As an example of such a mud solidification processing apparatus, the apparatus which remove | eliminated the 1st aggregate supply means 40 and the 2nd aggregate supply means 50 from the mud granulation processing apparatus as mentioned above can be mentioned. Also, a rotating drum that solidifies so that it is hard to re-mud by moving it to the front end side with the conveying blade while crushing and mixing the mud and solidified material by lifting and dropping with crushing blade by rotating it The mud solidification processing apparatus provided as is conventionally used. Here, although the embodiment of the present invention has been described by taking the mud granulation processing device placed on the ground as an example, the present invention can be configured such that the mud granulation processing device and the mud solidification processing device are installed in the crawler type traveling device. The present invention can also be applied to a mud granulation reforming device that can be loaded and unloaded on a transport vehicle.
[0074]
【The invention's effect】
  As is apparent from the above description, the mud reforming apparatus of the present invention detects the flow rate of the mud in the mud supply path to the mud supply path for supplying the mud into the mixing device by the mud supply apparatus. Flow detector for mud supplyAnd providing a control device that stops the operation of the mud supply device and the additive supply device when the detection value at the flow rate detector is below the set value.SoWhen the mud stays in the mud supply path, the operation of the mud supply device and the additive supply device is automatically stopped by the control device. As a result, it is possible to quickly restore the mud supply channel, and to clearly notify the operator that the restoration work is necessary, and to reliably stop meaningless supply of additives. Can do. In addition, since the control device was configured to reversely rotate the mud supply device after the operation of the mud supply device and the additive supply device was stopped by the control device, the contaminants held in the piping of the mud supply channel Can be removed mechanically by driving the mud supply device without human intervention, and can be easily removed. Therefore, according to the mud reforming apparatus of the present invention,Reduce the amount of processing and wasteful use of additives when modifying mudcertainlyCan be prevented. As a result, when performing construction or work that requires treatment of a huge amount of mud, the amount of mud treatment is not reduced and the work or work is not hindered, and expensive additives are wasted. It can be used without cost and can be used for economical mud reforming.
[0075]
In addition to exhibiting these effects, the mud granulation processing equipment will be shut down not only when the mud stays in the mud supply channel, but also when the amount of mud stored in the mud storage device is extremely low. Thus, the mud granulation apparatus can be idled to prevent wasteful consumption of additives and electric power. In addition, when the mud supply channel is blocked by mud and mud stops flowing, the mud supply device will stop operating, so it is possible to prevent damage to the mud supply device and piping of the mud supply channel. It can also be prevented.
[0077]
  When embodying the invention, in particular, the claimsClaim 2If it is embodied as described in, when the mud stagnation in the mud supply channel is a transient one that can be recovered immediately, the operation of the mud supply device and the additive supply device will not be stopped, Can limit these operations from being stopped more than necessary.
[Brief description of the drawings]
FIG. 1 is a plan view showing a mud granulation apparatus of a specific example of the present invention with a part thereof broken.
2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is an enlarged view of a part III in FIG. 2;
4 is a cross-sectional view taken along line IV-IV in FIG.
5 is a cross-sectional view taken along line VV in FIG.
6 is a view showing a modification of the III part of FIG. 2. FIG.
7 is a block diagram of a control device provided in the mud granulation processing apparatus of FIG. 1. FIG.
FIG. 8 is a flowchart showing a first control method implemented by the control device of FIG. 7;
FIG. 9 is a flowchart showing a second control method performed by the control device of FIG. 7;
10 is a diagram for explaining a second control method performed by the control device of FIG. 7; FIG.
[Explanation of symbols]
1 Mud granulation processing equipment
2 Operation panel
3 Mud storage tank
11 Flow rate detector
12 Setting device
13, 14 Electromagnetic switch
20 Control device
21 CPU
22 memory
23 Interface
30 Mud supply means
31 Mud fixed amount supply pump
32 Mud suction pipe
33 Mud discharge pipe
40 First agglomerate supply means
41 First aggregate storage tank
42 1st aggregate supply apparatus
43 First flocculant suction pipe
44 1st aggregate discharge pipe
50 Second aggregate supply means
51 Second aggregate storage tank
52 Second Aggregate Supply Device
53 Second aggregate suction pipe
54 Second aggregate discharge pipe
60 Solidifying material supply means
61 Solidifying material hopper
62 Solidifying material supply device
70 Multi-axis agitator
70a casing
70b Mud supply section
70c mud discharge port
70d 1st aggregate supply part
70e 2nd aggregate supply part
70f Solidification material supply section
71 Stirrer
71a Rotating shaft
71b stirring blade
71c Rotation drive device
Detected value for N mud flow
Setting value for flow rate of Ni mud
Ti Time setting value

Claims (2)

A mixing device for mixing the mud and the additive, a mud supply device for supplying the mud into the mixing device, and an additive supplying device for supplying the additive into the mixing device were supplied by the mud supply device. A mud for supplying mud into the mixing device by the mud supply device in the mud reforming processing device for processing the mud to be mixed with the additive supplied by the additive supplying device and the mixing device to modify the mud. the supply channel, the mud provided the flow rate detector for detecting the flow rate of the mud in the supply path Rutotomoni, flow detector in the detection value mud supply device and the additive material supply unit when it is below the set value The control device is configured to stop the operation of the mud supply device, and after the operation of the mud supply device and the additive supply device is stopped by the control device, the control device is configured to reversely rotate the mud supply device. Mud break Processing apparatus. When the operation of the mud supply device and additive supply device is stopped when the detection value at the flow rate detector is lower than the set value, the operation is stopped when the state lower than the set value continues for a preset time. The mud reforming processing apparatus according to claim 1 , wherein the control apparatus is configured so as to perform the control.

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