JP4702665B2 - Material kneading pump - Google Patents

Description

  The present invention relates to a material kneading and pumping device, and is a material kneading and pumping in which repair materials such as early high-strength concrete used for repairing concrete structures and the like are efficiently kneaded and further reliably transported to a repair location. Relates to the device.

  Generally, when repairing a concrete road pavement surface that has been depressed or repairing a covered part of a reinforced concrete structure that has deteriorated, an additive such as a quick-setting agent or a rapid strength agent that can provide a specified strength in a short time as a repair material. In many cases, concrete or mortar using an ultra-early strong cement or the like that has a very short hardening time is used. Also, in tunnel construction that progresses by excavating soft ground, use countermeasures to prevent the face from collapsing by constructing shotcrete using quick setting agent or ultra-early cement on the face (mirror) immediately after excavation. It has been.

  Since these concrete and mortar harden in a short time after the start of kneading after addition, cement mortar adhering to the inside of the mixer body or the stirring blade is hardened early in a conventional concrete mixer or the like. For this reason, cleaning such as washing away the cement mortar in the mixer must be performed immediately. However, the use of these ultra-high-strength concrete is often used for emergency repair work, etc., so the equipment used in parallel with the on-site emergency repair work must be cleaned. It was complicated and the burden on the workers was heavy.

  In order to improve these situations, an omni mixer (trade name) is known as a mixer (kneading apparatus) that is relatively easy to clean and capable of efficiently kneading concrete (see Non-Patent Document 1). . This omni-mixer is a rocking device in which the lower half of the barrel part into which the material is charged and kneaded is composed of a flexible rubber bowl, there is no stirring blade in the barrel part, and the rubber bowl part is installed on the lower base The concrete material is deformed upward periodically by the swiveling motion of the concrete, and the concrete material such as cement, aggregate, water, etc. accommodated in the rubber bowl is swung in a random direction along with the deformation of the rubber bowl. Kneading is performed. Since the kneaded concrete material is accommodated in the flexible rubber bowl without stirring the material with a stirring blade, there is an advantage that cleaning after discharging the concrete material can be performed relatively easily. Therefore, when early high-strength cement is used in repair work or the like, it is also a proposal to use this type of concrete mixer.

Chiyoda Giken Co., Ltd., Product Introduction Website, [online], [Search May 26, 2005], Internet <http://www.chiyoda-giken.co.jp/omni/>

  On the other hand, since the concrete material kneaded by the concrete mixer as described above is cured in a short time, it is not easy to pump the concrete material using the pipe, and particularly, the restoration of the pipe due to the blockage trouble of the pumping pipe, There is also a problem that when the concrete is adhered in the pipes and these are hardened, these pumping pipes cannot be reused. Therefore, the object of the present invention is to solve the problems of the conventional techniques described above, and to efficiently knead materials that harden early in concrete repair work using early high-strength cement, etc. It is an object of the present invention to provide a material kneading and pumping apparatus that can supply concrete that hardens early to a concrete placement site such as a repair site via a directly connected placement tube.

  In order to achieve the above object, the present invention has a pressure-resistant container having a lid capable of sealing a main body container, equipped with stirring means inside, and an upper opening supported by the opening edge of the main body container. An elastic diaphragm that can be deformed by operation, and a material bag-like body that is provided between the elastic diaphragm and the lid and that can knead a plurality of types of materials accommodated therein as the elastic diaphragm is deformed. A discharge pipe connected to the mouth of the material bag-like body and led out from the lid; and a pressurized fluid supply means capable of introducing a pressurized fluid of a predetermined pressure into the pressure-resistant container, the stirring means Kneading the material contained inside through the deformation of the elastic diaphragm by the operation of the above, and the kneaded material from the discharge pipe by pressurization in the pressure vessel by the pressurized fluid supply means It is characterized by being pumped to the outside.

  It is preferable that a communication hole is provided in a support portion of the partition wall in the pressure vessel so that the pressurized fluid introduced from the pressurized fluid supply means is in an isobaric state throughout the pressure vessel.

  The material in the material bag-like body is discharged from the discharge pipe to the outside of the pressure-resistant container by the external pressure acting on the material bag-like body by increasing the pressure fluid introduced from the pressurized fluid supply means, preferable.

  The material bag-like body is accommodated in a pressurized fluid bag-like body, pressurized fluid is introduced from the pressurized fluid supply means into the pressurized fluid bag-like body, and the pressurized fluid bag-like body is pressurized. It is preferable that the material in the material bag-like body is discharged from the discharge pipe to the outside of the pressure-resistant container by an external pressure acting on the material bag-like body, and is pumped.

  A pressurized fluid bag-like body is accommodated between the material bag-like body and the diaphragm, and a pressurized fluid is introduced into the pressurized fluid bag-like body from the pressurized fluid supply means. It is preferable that the material in the material bag-like body is discharged from the discharge pipe to the outside of the pressure-resistant container by an external pressure acting on the material bag-like body by expanding the shape body.

  As described above, according to the present invention, since the kneaded concrete material can be directly pumped from the kneading pumping device to the concrete placement site, members other than pipes can be contaminated with hardened cement mortar and the like. There is no effect. In addition, it is possible to efficiently knead and transport repair materials made of cement mortar that develops in a short time or increases in viscosity and may be difficult to handle at repair sites. Cleaning becomes easier in later cleaning, etc., and by using an inexpensive disposable product (disposal material) as a material for storing the material, the number of cleaning parts of the kneading and pumping device can be greatly reduced. The effect can also be expected.

  Hereinafter, as the best mode for carrying out the material kneading and pumping apparatus of the present invention, the following embodiments will be described with reference to the accompanying drawings.

  FIG. 1 shows a pressure vessel 1 commonly used as the main structure of the kneading and pressure feeding device 10 in each embodiment of the kneading and pressure feeding device 10 of the present invention described with reference to FIG. Kneading in a pressure-resistant container 1 and a bag-like body 20 (described later) accommodated in the inside, an external pressure source P as a pressure fluid supply source for supplying a pressure fluid F supplied to the bag-like body 20, and It is an apparatus block diagram which showed a part of concrete discharge pipe 11 which supplies the made concrete material M to concrete placement locations, such as a repair site | part.

  The configuration of the pressure vessel 1 will be briefly described. As shown in FIG. 1, the pressure vessel 1 commonly used in the following Examples 1 to 4 is a main body vessel 2 made of stainless steel having a predetermined plate thickness with a bottom portion having a convex curved shape, The lid 3 is in close contact with the upper opening of the main body container 2 and functions as the pressure vessel 1. In the present embodiment, the flat conical lid 3 can be brought into close contact with the upper opening of the main body container 2 by bolting via the respective connecting flanges 2a and 3a.

  The bottom of the main body container 2 is equipped with a stirrer. The stirrer 4 includes a rotation drive unit 5, a stirring arm 6 connected to a rotation shaft 5 a of the rotation drive unit 5, and a pressing plate 7 at the tip of the stirring arm 6. When the stirring arm 6 of the stirrer 4 turns, the pressing plate 7 functions to press the lower surface of the elastic diaphragm 8.

  The elastic diaphragm 8 is accommodated in the main body container 2 so as to be supported by the upper opening edge of the main body container 2 via the mounting flange 9. The elastic diaphragm 8 is a synthetic rubber bag-like member having a shallow U-shaped cross section. In this embodiment, the rotating stirring arm 6 is continuously worn and does not wear even if the lower surface of the elastic partition wall is pressed. Synthetic rubber moldings having a certain thickness and strength are used.

  As described above, the material stirring mechanism of the present invention is shown in FIGS. 1A and 1B in which the stirring arm 6 by the external operation control unit (not shown) is centered on the rotating shaft 5a of the rotation driving unit 5. As described above, the material contained in the bag-like body 20 (described later) installed in the elastic diaphragm 8 that is swung and pressed so that the pressing plate 7 pushes up the lower surface of the elastic diaphragm 8 is deformed. Operated on the principle of kneading.

  On the other hand, a concrete discharge pipe 11 is connected to the upper end portion of the lid 3, and the concrete material M kneaded in the pressure vessel 1 as a kneading pressure feeding device is discharged to the outside through the concrete discharge pipe 11. . The volume and shape of the pressure vessel 1 may be a volume that takes into account the volume of the concrete material M that can be kneaded. If the shape does not deform with respect to the internal pressure due to the pressure fluid F, for example, a cylindrical shape or the like It is good.

  FIG. 1A shows an example in which a pressure fluid supply pipe 12 for introducing the pressure fluid F supplied from the external pressure source P into the pressure resistant container 1 is connected to the lid 3, and FIG. An example in which a pressure fluid supply pipe 12 is attached to the side surface of the main body container 2 is shown.

  Further, a bag-like body 20 in which the concrete material M is accommodated is disposed above the elastic diaphragm 8 partitioned by the elastic diaphragm 8 attached in the main body container 2. The pressure fluid F is supplied into the pressure-resistant container 1 so that the entire bag-shaped body 20 is covered, and the external pressure due to the pressure fluid F is applied to the outer surface of the bag-shaped body 20 to be accommodated in the bag-shaped body 20. The concrete material M sufficiently kneaded in this state is discharged to the outside from the concrete discharge pipe 11 connected to the lid 3.

  Hereinafter, the structure of the bag-like body 20 located above the elastic diaphragm 8 in the main body container 2, the kneaded state of the concrete material M by the bag-like body 20, and the kneaded concrete material M as a kneading apparatus are used. A mechanism for pumping from the pressure vessel 1 will be described with reference to the drawings based on a plurality of embodiments. In this specification, the term “concrete material” is used as a general term for materials that can be kneaded by this kneading apparatus. For example, cement milk as a filler, mortar using only fine aggregate, resin Needless to say, the present invention can be applied to the production of various kneaded materials such as repair materials mainly composed of.

  In FIG. 2 (a), a bag-like body 20 that contains a kneaded material in a portion where an elastic diaphragm 8 is fixed to a connecting flange of the pressure vessel 1 via a mounting flange 9 and is covered with a lid 3 on the upper part thereof. (Hereinafter simply referred to as a material bag 20) is shown. In addition, a flexible hose-like concrete discharge pipe 11 is connected to the center of the cap-shaped lid 3, and a pressure fluid supply pipe 12 is connected to an intermediate position of the lid 3.

  In the present embodiment, the material bag-like body 20 is made of a high-density polyethylene bag having a thickness of several millimeters, and as shown in the figure, to match the inner diameter of the mouth portion 3a of the lid 3 of the pressure-resistant container 1, The mouth has a narrow neck shape. The material bag-like body 20 is supplied as an inexpensive resin molded product, and can be used as a disposable product (disposable product) that is kneaded and removed and replaced for each material supply operation. In this material bag-like body 20, a hydraulic hardening material (hereinafter simply referred to as cement), an aggregate, and kneaded water such as a fast-strength cement and a quick setting additive are accommodated in a predetermined composition, and a part of the concrete discharge pipe 11 is stored. In the state in which the container is sealed, the stirring arm 6 is swung in the direction of the arrow (see FIGS. 1A and 1B), and the bottom surface of the elastic diaphragm 8 is pushed up so that the material bag shape is located above the elastic diaphragm 8 The cement, aggregate, and kneaded water contained in the body 20 can be stirred (kneaded) so as to knead softly.

  At this time, in order to efficiently transmit the deformation energy of the elastic diaphragm 8 due to the rotation of the stirring arm 6 of the stirrer 4 equipped at the bottom of the pressure vessel 1 to the material bag-like body 20, a predetermined pressure is applied in the pressure vessel 1. The pressure fluid F is introduced. At this time, since the communication hole 13 is formed in a part of the mounting flange 9 that supports the elastic diaphragm 8 in the pressure-resistant container 1, the entire inside of the container with the elastic diaphragm 8 in the pressure-resistant container 1 as a boundary is equal pressure. Is in a state.

  At the time of kneading, since the pressure fluid F having a low fluid compressibility is introduced into the pressure resistant container 1 at a predetermined pressure, the deformation state of the elastic diaphragm 8 is reliably transmitted as the deformation energy of the material bag-like body 20, and the bag shape As the body 20 is deformed, each material accommodated in the bag-like body 20 is reliably stirred. As described above, the pressure fluid F is preferably an incompressible fluid, and liquid such as water and hydraulic oil is preferable, but water that is easy to handle is preferably used. Gas may be used by introducing a certain pressure. At this time, in addition to normal compressed air, nitrogen gas or the like that is easy to supply and safe to handle can be used.

  When the kneading is completed, when the sealed state of the mouth portion of the material bag-like body 20 is released and the pressure of the pressure fluid F is increased, as shown in FIG. An external pressure acts on the entire body 20, and the kneaded concrete material M in the bag is discharged to the outside through the concrete discharge pipe 11. When the concrete material M in the material bag-like body 20 is completely discharged, the pressure is released through the step of collecting the pressure fluid F, the lid 3 is removed, and the empty material bag in the main body container 2 is removed. The shaped body 20 is removed and replaced with a new one. In addition, when the concrete material M is discharged, the pressure-resistant container 1 is in an equal pressure state through the communication hole 13, so that the elastic diaphragm 8 is not deformed or displaced.

  In Example 2 shown in FIG. 3 (a), a material bag-like body 20 having a U-shaped wide mouth shape and a double O-ring-like edge formed on the edge of the wide mouth is used. Has been. The material bag-like body 20 has an edge portion 20a sandwiched between connecting flanges 2a and 3a between the main body container 2 and the lid 3 of the pressure vessel 1 as shown in FIG. Set to

  At this time, the pressure fluid supply pipe 12 is connected to the side surface of the main body container 2 as shown in FIG. A communication hole 13 is formed in a part of the flange 9 that supports the elastic diaphragm 8 set in the main body container. In the second embodiment, the elastic diaphragm 8 in the pressure-resistant container 1 is attached as in the first embodiment. The entire interior as a boundary is in an isobaric state. Therefore, the deformation state of the elastic diaphragm 8 is reliably transmitted as the deformation energy of the material bag-like body 20, and the material accommodated in the bag-like body 20 is reliably stirred as the bag-like body 20 is deformed. Therefore, as in Example 1, cement, aggregate, and kneaded water are stirred (kneaded) in the material bag 20 so as to knead softly.

  In the present embodiment, since the material bag-like body 20 has a wide mouth shape, it is easy to input the material, but the kneaded material directly touches the inner surface of the lid 3. Therefore, by applying a release material or the like to the inner surface of the lid 3 or attaching and covering a resin cover (not shown) made of an adhesive seal or the like, the processing such as cleaning after kneading is facilitated. It is preferable to keep it.

  When the kneading is completed, as shown in FIG. 3 (b), when the concrete discharge pipe 11 is released and the pressure of the pressure fluid F is increased, the bag-like body 20 in the pressure vessel 1 is entirely The external pressure acts on the material bag-like body 20 and the kneaded concrete material M inside the material bag-like body 20 is discharged to the outside through the concrete discharge pipe 11.

  In Example 3 shown in FIG. 4A, the material bag-like body 20 used in Example 1 is configured to be accommodated in the pressurized bag-like body 15. The pressure bag 15 is attached to the mouth portion 3 a of the lid 3 so as to completely cover the material bag 20, while the pressure bag 15 is applied to the pressure bag 15 through the pressure fluid inlet 3 b of the lid 3. In order to introduce F, it is set in the main body of the pressure-resistant vessel 1 with the mouth portion 15a protruding outside. In the present embodiment, the pressurized bag-like body 15 is formed of a synthetic resin molded product having a small tensile deformation property and pressure resistance, and when a pressurized fluid F having a predetermined pressure is injected therein, Does not deform and acts to shrink the volume of the internal material bag-like body 20 by the working internal pressure. As a result, the kneaded concrete material M in the material bag-like body 20 passes through the concrete discharge pipe 11. It is discharged outside.

  In Example 4 shown in FIG. 5A, the pressure bag 16 was accommodated in the space defined by the elastic diaphragm 8 so as to be adjacent to the material bag 20 used in Example 1. It consists of a configuration. In the pressure bag-like body 16, in the kneading process of the concrete material M by the material bag-like body 20, as shown in FIG. It is accommodated so as to be positioned in the gap between the material bag-like body 20 filled with each material and the elastic diaphragm 8 in a state of projecting outside through the pressurized fluid inlet 3b. At the time of discharging the kneaded concrete material M, the pressurized fluid F is injected into the pressurized bag-like body 16 so that the pressurized bag-like body 16 expands between the elastic diaphragm 8 and the material bag-like body 20. The material bag-like body 20 is crushed. At this time, since the mouth portion 10a of the material bag-like body 20 is unsealed, the kneaded concrete material M inside is externally passed through the concrete discharge pipe 11. Discharged.

  By making each material bag-like body 20 and the concrete discharge pipe 11 described above as disposable parts, it becomes almost unnecessary to clean the kneading apparatus. The additive can be added and the material can be kneaded. In addition, a plurality of material bag-like bodies pre-filled with measured materials (premix material) other than kneaded water were prepared, and this premix material-containing material bag-like body was set in the kneading pressure feeding device. In the stage, after kneading as necessary, kneading water is added, predetermined kneading is performed, and, as described above, the kneaded concrete material M is placed in a repairing place, etc. The same new kneading operation can be continuously performed by setting the next new material bag-like body containing premix material. Thereby, even at the time of emergency repair, a necessary amount of quick-set repair material can be continuously supplied.

Explanatory drawing which showed a part inside and the whole schematic structure of the material kneading | mixing pressure feeding apparatus of this invention. The apparatus sectional view showing the example of composition of Example 1 of the material kneading pressure feed apparatus of the present invention. The apparatus sectional view showing the example of composition of Example 2 of the material kneading pressure feeding apparatus of the present invention. The apparatus sectional view showing the example of composition of Example 3 of the material kneading pressure feeding apparatus of the present invention. The apparatus sectional view showing the example of composition of Example 4 of the material kneading pressure feeding apparatus of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pressure-resistant container 2 Main body container 3 Lid 4 Stirrer 8 Elastic diaphragm 10 Kneading pressure feeding apparatus 11 Concrete discharge pipe 13 Communication hole 15, 16 Pressurized bag-like body 20 Material bag-like body F Pressurized fluid M Concrete material P External pressure source

Claims (5)

A pressure-resistant container having a lid capable of sealing the main body container and equipped with stirring means inside,
An upper opening is supported on the opening edge of the main body container, and an elastic diaphragm that can be deformed by the operation of the stirring means,
A material bag-like body provided between the elastic diaphragm and the lid, and capable of kneading a plurality of types of materials housed inside the elastic diaphragm with deformation of the elastic diaphragm;
A discharge pipe connected to the mouth of the material bag-like body and led out from the lid;
A pressurized fluid supply means capable of introducing a pressurized fluid of a predetermined pressure into the pressure vessel,
The material contained therein is kneaded through the deformation of the elastic diaphragm by the operation of the stirring means, and the kneaded from the discharge pipe by the pressurization in the pressure vessel by the pressurized fluid supply means. A material kneading and pumping device characterized in that the material is pumped outside.   2. A communication hole is provided in a support portion of a partition wall in the pressure vessel, and the pressurized fluid introduced from the pressurized fluid supply means is in an isobaric state throughout the pressure vessel. The material kneading pressure feeding apparatus described.   The pressurized fluid introduced from the pressurized fluid supply means is pressurized to discharge the material in the material bag-like body out of the pressure-resistant container by the external pressure that acts on the material bag-like body, and cause the material to be pumped. The material kneading and feeding apparatus according to claim 1, wherein   The material bag-like body is accommodated in a pressurized fluid bag-like body, pressurized fluid is introduced from the pressurized fluid supply means into the pressurized fluid bag-like body, and the pressurized fluid bag-like body is pressurized. 2. The material kneading and feeding device according to claim 1, wherein the material in the material bag-like body is discharged from the discharge pipe to the outside of the pressure-resistant container by an external pressure acting on the material bag-like body, and is pumped.   A pressurized fluid bag-like body is accommodated between the material bag-like body and the diaphragm, and a pressurized fluid is introduced into the pressurized fluid bag-like body from the pressurized fluid supply means. 2. The material kneading and feeding device according to claim 1, wherein the material is inflated to discharge the material in the material bag-like body from the discharge pipe to the outside of the pressure-resistant container and pressure-feed.

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