JPH0733175B2 - Method and apparatus for pumping materials to be pumped such as concrete, mortar, and soil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is applied, for example, when concrete, mortar, seed-filling soil, etc. is sprayed onto an inclined surface, a vertical surface or the like to construct a retaining wall. Or, when placing concrete or mortar to construct a concrete structure, concrete, mortar, seed soil and other suitable materials to be pumped can be reliably and stably transferred from a low place to a high place. TECHNICAL FIELD The present invention relates to a method and a device for feeding a material to be fed, such as concrete, mortar, and soil, which can be fed to the material.

(Prior Art) Conventionally, for example, Japanese Patent Laid-Open No. 54-
There is a squeezing pump as disclosed in Japanese Patent Publication No. 208. This is due to the pressing action by which the roller of the rotary pressing body presses and rolls the elastic tubular body provided in the case main body in a substantially lateral U-shape along with the restoring force of the elastic tubular body. The object to be pressure-fed such as concrete in the elastic cylinder is pressure-fed. (Note that a method and an apparatus for transferring a solid-liquid mixture by a tube roller pump as disclosed in JP-A-56-145027 is also disclosed).

In addition, a method for transporting a ground improvement material as disclosed in Japanese Patent Application Laid-Open No. 63-35914 and Japanese Utility Model Application No. 62-110583 (Japanese Utility Model Application Laid-Open No.
There are long-distance transportation devices such as soft mud as shown in No. 19655).

(Problems to be Solved by the Invention) However, when an object to be pressure-fed, such as concrete, mortar, and soil for greening seeds, is to be pressure-fed in a feed hose by a pressure-feeding device, it changes depending on, for example, the water content. When the kneading hardness of the object to be pumped is low (when the fluidity is high), the friction resistance in the pipe is small, and even if the pumping pressure is relatively low, it can be smoothly pumped to a high place. When the kneading hardness is high (when the fluidity is low),
There was a problem that the frictional resistance in the pipe became large, and even if the pumping pressure was increased, it could not be smoothly pumped to a high place. Moreover,
The pumping device has a limit in the pumping capability of the device itself, and the object to be pumped cannot be pumped beyond this limit.

And when constructing a relatively high and large retaining wall, if the object to be pumped such as concrete, mortar, and seed-filling soil with low kneading hardness is sprayed onto the spray surface, There is a problem that it is not suitable for constructing a retaining wall because the fixability on the attachment surface is very poor and the object to be pressured flows.
In constructing a retaining wall or the like, it was necessary to use an object to be pumped having a relatively high kneading hardness. However, when an object to be pumped with a high kneading hardness is used, there is a problem that the object to be pumped such as concrete, mortar, and seed-filling soil cannot be sprayed onto the upper part of a relatively high and large retaining wall. Further, even if it can be sprayed to the upper portion, it is difficult to quickly and stably pump the object to be pumped, and the pumping of the object to be pumped at the limit height is performed by each of the constituent materials constituting the object to be pumped. There is also a problem that a mixed state of biased constituent materials is likely to occur due to a difference in specific gravity.

For this reason, it is possible to pump the object to be pumped with a relatively high kneading hardness, which increases the frictional resistance in the pipe, to a high place with a surplus force, and to send the object to be pumped quickly and efficiently and stably. A method and pumping apparatus were desired.

(Means for Solving the Problems) Therefore, the present invention was created in order to achieve the above-mentioned problems, and in the method of pumping an object to be pumped, concrete, mortar, soil Such as
The compressed air from the main air compression device E is fed into the mixing and stirring device C, and the mixture is stirred and kneaded. At the same time, the object to be pressure-fed is fed through the feeding hose 5 to the main pressure feeding device A. In this main pressure feeding device A, the roller 33 and the pressure piece
With 37 etc., any part of the elastic cylindrical body 30 or 35 having a restoring force is always pinched to be in a closed state, and the elastic cylinder is moved by the movement of the closed part due to this clamping pressure.
The object to be pressured within 30,35 is pressure-fed in one direction to continuously feed the object to be pressured into the main feeding hose 1, while the compressed air from the auxiliary air compression device D is passed through the hose 7. It is fed to the sub-pressure feeding device B, and in the sub-pressure feeding device A, a state in which one of the elastic tubular bodies 30 and 35 having a restoring force is always pinched by the roller 33, the flaking piece 37, etc. At the same time, the elastic cylinders 30, 3 are moved by the movement of the closed part due to this pressure.
The compressed air in 5 is fed in one direction to continuously supply the compressed air into the pressure-feeding hose 6, and the compressed air in the pressure-feeding hose 6 is provided at an appropriate position in the main feeding hose 1 for pressurization. Two
The main feed hose 1 is fed into the main feed hose 1 via
A means for forcibly pressure-feeding the object to be pressured therein toward the nozzle 3 mounted on the tip portion of the main feeding hose 1 is adopted.

Further, in the pressure-feeding device for the object to be pressure-fed, the roller 33, the pressure-relieving piece 37, or the like always keeps any part of the elastic cylindrical body 30 or 35 having a restoring force in a closed state. Yes, by the movement of the part that is pressed and blocked, the material is sent to the inlet 10 of the main pumping device A that is configured to pump the object to be pressured in the elastic cylinders 30 and 35 in one direction. Hose 5
The mixing and stirring apparatus C is connected via
Is connected to a main air compressor E for forcibly supplying compressed air, and the main feed hose 1 is connected to the outlet 11 of the main pressure feed A, while the roller 33, the pressure piece 37, etc. Always has a state in which any part of the elastic cylindrical body 30, 35 having a restoring force is in a closed state by being pinched, and by the movement of the part in which the elastic cylinder body 30, 35 is put in by being pinched and blocked, the elastic cylindrical body 30, The auxiliary air compressor D for forcibly supplying the compressed air through the hose 7 is connected to the inlet 20 of the auxiliary compressor B configured to pump the compressed air in one direction. A pressure-feeding hose 6 is connected to the outlet 21 of the pressure-feeding device B.
Is connected to a pressurizing joint 2 provided at an appropriate position of the main feeding hose 1, and the main feeding hose 1 is pressurized by the pressure from the auxiliary pressure feeding device B using compressed air. The means for configuring the above is adopted.

(Operation) However, in the method of pumping the object to be pumped, the object to be pumped such as concrete, mortar, and soil is put into the mixing and stirring device C, stirred and kneaded, and then the main air compression device E is used. The compressed air fed into the mixing and stirring apparatus C is fed to the main pressure feeding apparatus A via the feeding hose 5. Then, in the main pressure feeding device A, the roller 33, the pressing piece 37, etc. are always in a state where any part of the elastic cylindrical body 30, 35 having a restoring force is pressed and closed, and The closed portion due to this constriction moves, and the object to be pressure-fed that has been fed into the elastic cylinders 30 and 35 is pressure-fed in the elastic cylinders 30 and 35 in one direction. Further, the object to be pressure-fed is fed into the main feed hose 1 and is forcibly fed toward the nozzle 3 mounted on the tip portion of the main feed hose 1.

On the other hand, the compressed air from the sub air compressor D is sent to the sub pressure feeder B via the hose 7. Then, the auxiliary pressure feeding device B
In that case, by the roller 33, the pressure piece 37, etc.,
While either part of the elastic cylinders 30, 35 having a restoring force is pinched and put into a closed state, the part blocked by this pinch moves and is fed into the elastic cylinders 30, 35. The compressed air thus generated is pressure-fed in the elastic cylinders 30 and 35 in one direction. Further, the compressed air is fed from the auxiliary pressure feeding device B to the pressure feeding hose 6, is fed from the pressure feeding hose 6 into the main feeding hose 1 via the pressurizing joint 2, and the compressed air inside the main feeding hose 1 is fed. The material to be pumped is forcibly fed toward the nozzle 3. That is, the material to be pressure-fed is pressure-fed by the total pressure of the pressure feed pressure from the main pressure feed device A and the pressure feed pressure from the auxiliary pressure feed device B, and is fed from the nozzle 3 at the tip of the main feed hose 1. Moreover, at this time, the compressed air is mixed in a state in which the compressed air is appropriately dispersed, and the compressed matter is smoothly fed without being clogged in the main feed hose 1.

In the case of the pressure-feeding device for the pressure-feeding object, the main pressure-feeding device A
Is always in a state in which any part of the elastic cylindrical body 30, 35 having a restoring force is blocked by the roller 33, the pressing piece 37, etc., and is blocked by the pressing. By moving the parts, the object to be pressure-fed in the elastic cylindrical bodies 30, 35 is pressure-fed in one direction. Moreover, the mixing and stirring device C is connected to the inlet 10 of the main pressure feeding device A via the feeding hose 5,
A main air compressor E for forcibly feeding compressed air is connected to the mixing and stirring device C. And the main pumping device A
The main feed hose 1 is connected to the delivery port 11 of the. That is, the material to be pressure-fed in the mixing and stirring apparatus C is fed into the main pressure-feeding apparatus A by the compressed air from the main air compression apparatus E,
It is forcibly fed into the main feeding hose 1 by the main feeding device A.

On the other hand, the sub-pressure feeding device B is always in a state in which any part of the elastic cylindrical body 30, 35 having a restoring force is pinched and blocked by the roller 33, the pinching piece 37, etc. Due to the movement of the closed portion, the elastic cylindrical body 3
Compressed air in 0, 35 is pumped in one direction. Moreover, the auxiliary air compressor D for forcibly supplying the compressed air through the hose 7 is connected to the inlet 20 of the auxiliary compressor B. A pressure feed hose 6 is connected to the outlet 21 of the auxiliary pressure feed device B, and a tip end portion of the pressure feed hose 6 is connected to a pressurizing joint 2 provided at an appropriate position of the main feed hose 1. That is, the compressed air from the sub air compression device D is fed into the sub pressure feeding device B, and is forcibly fed into the main feeding hose 1 via the pressure feeding hose 6 by the sub pressure feeding device B, and the main feeding The pressure in the hose 1 is increased.

(Example) Hereinafter, the present invention will be described with reference to illustrated examples.

The device of the present invention comprises, for example, a squeezing pump described later, which is configured so as to be capable of continuously pumping an object to be pumped, such as concrete, mortar, and seed soil greening soil A main pressure-feeding device A, a sub-pressure-feeding device B including a squeezing-type pump, which will be described later, which is configured to be capable of continuously pressure-feeding a pressure using compressed air, and an object to be pressure-fed. A mixing and stirring device C that stirs and kneads the object to be pressure-mixed so that the mixed state of the constituent materials that make up the component are uniform, and a sub-air compression device D that compulsorily supplies compressed air to the sub-pressure feeding device B. A main air compressor E provided so as to forcibly supply compressed air to the mixing / stirring apparatus C and smoothly send the object to be pressured in the mixing / stirring apparatus C to the main pressure feeding apparatus A. It is a thing. Moreover, the base end portion of the main feed hose 1 is connected to the delivery port 11 of the main feed device A, and the nozzle 3 is attached to the tip end portion of the main feed hose 1 at an appropriate position of the main feed hose 1. Is equipped with a pressurizing joint 2, and the feed port 10 of the main pressure feeding device A and the mixing and stirring device C are connected via a feeding hose 5. Further, the inlet 20 of the auxiliary pressure feeding device B and the auxiliary air compression device D are connected via a hose 7, and the outlet 21 of the auxiliary pressure feeding device B and the pressurizing joint 2 are connected via a pressure feeding hose 6. ing.

That is, the material to be pressure-mixed which is uniformly stirred and kneaded by the mixing and stirring device C reaches the inlet 10 of the main pressure-feeding device A through the feeding hose 5 by the pressure (compressed air) from the main air-compressing device E. , Is fed under pressure into the main feed hose 1 by the main feed device A. On the other hand, the pressure (compressed air) from the sub air compression device D is fed to the sub pressure feeding device B via the hose 7, and the sub pressure feeding device B feeds the pressure (compressed air) into the pressure feeding hose 6 as well as the pressurizing joint 2 It is configured to be pressure fed into the main feeding hose 1 via.

By the way, as shown in FIG. 1, the main pumping device A and the sub pumping device B are provided with an elastic tubular body 30 in a substantially U-shape along the inner wall surface of the case body 34 of the main and sub pumping devices A and B. Then, the plurality of rollers 33 attached to the rotating body 32 of the rotary pressing body 31, the elastic cylinder 30 is pressed against the inner wall surface of the case body 34 and is rolled,
It is configured such that by the throttling motion of the elastic cylindrical body 30 having a restoring force, the object to be compressed and the compressed air in the elastic cylindrical body 30 can be continuously pumped in one direction toward the outlets 11 and 21 without returning. Alternatively, as shown in FIG. 2, a pair of left and right pair of constriction pieces 37 capable of sequentially constricting the elastic cylindrical body 35 on both sides of the substantially straight elastic cylindrical body 35. By the squeezing movement of the elastic cylindrical body 35 having a restoring force by a plurality of sets of pressing pieces 37, the object to be compressed and the compressed air in the elastic cylindrical body 35 do not return toward the outlets 11 and 21. It is possible to employ one configured so as to be capable of sequentially pressure-feeding in one direction, a combination of these, or another appropriately configured one. That is, by the roller 33, the constricting piece 37, etc., any part of the elastic cylindrical body 30, 35 having a restoring force is always confined and blocked, and the part blocked by the confining pressure is The object to be compressed or the compressed air that has moved and is fed into the elastic cylinders 30 and 35 may be configured to be pressure-fed in one direction without returning in the elastic cylinders 30 and 35. Good.

Further, as shown in FIGS. 3 and 4, the main pumping device A and the sub pumping device B are provided in one main body case 34 so that the entire pumping device is compact, and the main pumping device is driven by one driving force. It is also possible to employ a device configured to drive both A and the auxiliary pressure feeding device B. That is, this pumping device has two substantially U-shaped walls along the inner wall surface of the case body 34.
Pressing bodies 31, 31 having roller-shaped rollers 30 arranged by arranging the character-shaped elastic tubular bodies 30, 30 respectively on the left and right sides and rolling the elastic tubular bodies 30, 30 against the inner wall surface of the case main body 34, respectively. 34
It is arranged on the left and right, and is configured so that the rotational force of one prime mover can be appropriately transmitted to the pressing bodies 31, 31 via a gear train. Moreover, an appropriate clutch mechanism capable of interrupting the transmission of the driving force to the auxiliary pressure feeding device B may be incorporated in the gear train so that only the main pressure feeding device A can be operated according to the working conditions. .

Further, the structure of the mixing and stirring device C itself may be any as long as it has a stirring blade body that can be driven and rotated in the stirring case,
In addition, the setting is not limited to the illustrated example, and can be set freely as appropriate.

By the way, a mixing and stirring device C1 may be appropriately interposed between the auxiliary air compression device D forcibly supplying the compressed air and the auxiliary pressure supply device B. That is, the compressed air is forcibly fed to the auxiliary pressure feeding device B, and at the same time, the one related to the substance to be pressurized in the mixing and stirring device C1 is fed at the same time, and this is fed to the sub feeding device h It becomes possible to mix it in the pumped product. Further, the configuration of the mixing and stirring device C1 itself can be freely set as appropriate.

The specific configuration of the main pressure feeding device A, the pressure feeding capability, the specific configuration of the auxiliary pressure feeding device B, the pressure feeding capability, the specific configuration of the mixing and stirring device C, the specific configuration of the sub air compression device D, the main air compression device E.
The specific configuration of the above, the specific configuration of the pressurizing joint 2, the disposition position of the pressurizing joint 2 in the main feed hose 1, and the like can be freely set as appropriate.

The pressure-feeding device of the present invention is configured as described above. Next, the pressure-feeding method using this device will be described. First, the material to be pressure-fed such as concrete, mortar, and soil is put into the mixing and stirring device C. Then stir and knead. Then, the compressed air from the main air compression device E is fed into the mixing and stirring device C, and at the same time, the object to be pressure fed is fed to the main pressure feeding device A via the feeding hose 5. Then, the object to be pressure-fed is continuously pressure-fed into the main feeding hose 1 through the main pressure-feeding device A. On the other hand, the compressed air from the sub air compression device D is sent to the sub pressure feeding device B via the hose 7, the compressed air is continuously fed to the pressure feeding hose 6 via the sub pressure feeding device B, and the compression air is compressed. Air is pressure-fed into the main feeding hose 1 through the pressurizing joint 2,
The object to be pressured in the main feed hose 1 is forcibly fed toward the nozzle 3 mounted on the tip of the main feed hose 1.

In the main feed device A, the roller 33, the pressing piece 37, or the like constantly presses any part of the elastic cylindrical body 30, 35 having a restoring force to be in a closed state, and Due to the movement of the closed portion, the object to be pressure-fed in the elastic cylinders 30 and 35 is pressure-fed in one direction so that it cannot return, and the object to be pressure-fed is continuously fed into the main feed hose 1. Also,
In the auxiliary pressure feeding device A, by the roller 33, the pressing piece 37, etc.,
At any time, either part of the elastic cylindrical body 30, 35 having a restoring force is pinched to be in a closed state, and the compressed air in the elastic cylindrical body 30, 35 is moved by the movement of the closed part due to this pinching pressure. Is unidirectionally pressure-fed so that compressed air is continuously fed into the pressure-feeding hose 6.

By the way, the auxiliary pressure-feeding device B not only pressure-feeds only the compressed air into the main feed hose 1, but also a part of the constituent material of the pressure-fed object to be fed into the mixing / stirring device C1 having a relatively small specific gravity, or Items related to the object to be pressure-fed or those having other appropriate properties may be pressure-fed at the same time.

(Effects of the Invention) Therefore, in the method for pumping the object to be pumped according to the present invention, the object to be pumped such as concrete, mortar, and soil is put into the mixing and stirring device C, and the mixture is stirred and kneaded. The compressed air from the main air compressor E is sent to the main air compressor E, and the object to be pressure-fed is sent to the main pressure feeder A through the feeding hose 5. In the main pressure feeder A, the roller 33 and the pressure piece 37 are used. As a result, any part of the elastic cylinders 30, 35 with resilience is always pinched to be in a closed state, and the inside of the elastic cylinders 30, 35 is moved by the movement of the blocked part due to this pinching pressure. To be fed in one direction and continuously fed into the main feeding hose 1, while compressed air from the sub air compressor D via the hose 7 to the sub pressure feeding device B. In this auxiliary pressure feeding device A, by the roller 33, the pressing piece 37, etc.,
While compressing any part of the elastic cylinders 30, 35 having a restoring force to be in a closed state, the compressed air in the elastic cylinders 30, 35 is removed by moving the closed part due to this compression. Direction, the compressed air is continuously fed into the pressure-feeding hose 6, and the compressed air of the pressure-feeding hose 6 is mainly fed through the pressurizing joint 2 provided at an appropriate position of the main-feeding hose 1. Since it is sent into the supply hose 1 and the object to be pressured in the main supply hose 1 is forcibly forced toward the nozzle 3 attached to the tip of the main supply hose 1, it is sprayed appropriately on an inclined surface or a vertical surface. It becomes possible to pressure-feed an object to be pressed with a relatively high kneading hardness that is relatively high on the surface to a higher place with a reserve capacity, for example, even when building a relatively high and large retaining wall. It is possible to easily and easily carry the objects to be pumped up such as concrete, mortar, and seed-filling soil. You can surely spray. In addition, it becomes possible to quickly and efficiently press the object to be pressured, and it becomes possible to easily obtain a stable pressure-feeding state, shorten the working time, and improve the working safety and the like.

Further, by the main pressure feeding device A and the auxiliary pressure feeding device B, there is no possibility that the object to be pressured will flow back in the main feeding hose 1 or the pressure feeding hose 6, and the object to be pressured can be moved to a high place with a surplus power. It will be possible to quickly pump.

In particular, the compressed air from the main air compression device E is fed into the mixing and stirring device C, while the compressed air is fed from the sub air compression device D to the sub pressure feeding device B, and via this sub pressure feeding device B. Since compressed air is sent into the main feed hose 1 via the pressurizing joint 2, the pressure-feed object can be fed by the total pressure of the feed pressure from the main feed device A and the feed pressure from the auxiliary feed device B. become. In addition, compressed air can be appropriately mixed in the pressure-delivered object in a dispersed state, and pressure-feeding can be performed without causing a biased component material mixture state or the like due to a difference in specific gravity of each component material forming the pressure-delivered object. In addition, it is possible to reduce the frictional resistance in the pipe between the object to be pumped and the inner wall surface of the main feeding hose 1 without lowering the kneading hardness of the object to be pumped, and to smoothly force the object to be pumped. The main feed hose 1 will not be clogged with the object to be pressure-fed.

Further, the pressure-feeding device of the present invention, by the roller 33, the pressing piece 37, etc., is always in a state in which any part of the elastic cylindrical body 30, 35 having a restoring force is pressed and blocked. Yes, by the movement of the part that is pressed and blocked, the material is sent to the inlet 10 of the main pumping device A that is configured to pump the object to be pressured in the elastic cylinders 30 and 35 in one direction. Hose 5
The mixing and stirring apparatus C is connected via
Is connected to a main air compressor E for forcibly supplying compressed air, and the main feed hose 1 is connected to the outlet 11 of the main pressure feed A, while the roller 33, the pressure piece 37, etc. Always has a state in which any part of the elastic cylindrical body 30, 35 having a restoring force is in a closed state by being pinched, and by the movement of the part in which the elastic cylinder body 30, 35 is put in by being pinched and blocked, the elastic cylindrical body 30, The auxiliary air compressor D for forcibly supplying the compressed air through the hose 7 is connected to the inlet 20 of the auxiliary compressor B configured to pump the compressed air in one direction. A pressure-feeding hose 6 is connected to the outlet 21 of the pressure-feeding device B.
Is connected to a pressurizing joint 2 provided at an appropriate position of the main feeding hose 1, and the main feeding hose 1 is pressurized by the pressure from the auxiliary pressure feeding device B using compressed air. Since it is configured as described above, the pressure using the compressed air from the sub air compression device D is applied to the object to be pressure-fed in the main feeding hose 1 that is pressure-fed by the main pressure feeding device A, and the sub-pressure feeding device B and the pressure feeding hose 6 ,
It becomes possible to reliably pressurize through the pressurizing joint 2, and it becomes a device having a more excellent pumping capability (pressure), and it is possible to swiftly pump the object to be pumped to a higher place with a surplus capacity.
Moreover, the pumping device has a relatively simple structure, excellent durability, and is easy to handle.

Further, the main pressure feeding device A and the sub pressure feeding device B are always provided with elastic cylinders 30 and 35 having a restoring force by the rollers 33, the pressing pieces 37 and the like.
One of the parts is pinched and blocked, and the movement of the part that is pinched and blocked causes the object to be compressed and compressed air in the elastic cylinders 30, 35 to move in one direction. Since it is configured to perform pressure feeding, there is no possibility that the object to be pressure-returned will return in the main feeding hose 1 or the pressure feeding hose 6, and the pressure feeding pressure from the main pressure feeding device A to the pressure feeding pressure from the auxiliary pressure feeding device B will not occur. Is reliably applied, and this pressure can be reliably applied to the object to be pressurized in the main feed hose 1.

Particularly, since the mixing and stirring apparatus C is connected to the auxiliary air compression apparatus E for forcibly feeding compressed air, and the auxiliary pressure feeding apparatus B is connected to the main air compression apparatus D, the compressed air is fed into the object to be pressurized. It becomes possible to mix in a dispersed state as appropriate, and it becomes possible to perform pressure-feeding without causing a biased state of mixing of constituent materials due to differences in the specific gravity of the constituent materials that make up the material to be pressured, and to knead the material to be pressured. Without lowering the hardness, it is possible to reduce the frictional resistance in the pipe that occurs between the object to be pressure-fed and the inner wall surface of the main feeding hose 1, and the object to be pressure-fed can be smoothly and smoothly fed. The pressure-feeding device does not cause the object to be pressure-fed in the main feeding hose 1.

[Brief description of drawings]

The drawings illustrate the invention, FIG. 1 is a schematic diagram showing the method and apparatus, FIG. 2 is a schematic diagram showing the method and apparatus in another embodiment, and FIGS. 3 and 4 are pumping. FIG. 3 is a partially cutaway front view, and FIG. 4 is a partially cutaway side view for illustrating the device. A ... Main pressure feeding device, B ... Sub pressure feeding device, C ... Mixing stirring device, C1 ... Mixing stirring device, D ... Sub air compression device, E
...... Main air compressor, 1 ... Main feed hose, 2 ... Pressure fitting, 3 ... Nozzle, 5 ... Feed hose, 6 ... Pressure feed hose, 7 ... Hose, 10 ... Feed Mouth, 11 ... Outlet, 20 ... Inlet, 21 ...
… Sending port, 30 …… Elastic cylinder, 31 …… Pressing body, 32 …… Rotating body, 33 ……
Roller, 34 …… Case body, 35 …… Elastic cylinder, 36 ……
Pressing body, 37 ... Clamping piece.

Continuation of the front page (56) Reference JP-A 52-51680 (JP, A) JP-A 63-267614 (JP, A) JP-A 63-35914 (JP, A) JP-A 54-208 (JP , A) Japanese Unexamined Patent Publication No. 56-145027 (JP, A) Actual development No. 64-19655 (JP, U)

Claims (2)

[Claims] 1. A material to be fed such as concrete, mortar, and soil is put into a mixing and stirring apparatus to stir and knead, and compressed air from a main air compression apparatus is fed into the mixing and stirring apparatus. The object to be pressure-fed is fed to the main pressure feeding device via the feeding hose, and in this main pressure feeding device, any part of the elastic cylindrical body having a restoring force is always pinched by the roller or the pressure piece to be closed. In addition, the pressure-fed object in the elastic cylinder is pressure-fed in one direction by the movement of the closed part due to this pressure, and the pressure-fed object is continuously fed into the main feeding hose. On the other hand, compressed air is fed from the sub air compression device to the sub pressure feeding device via a hose, and in this sub pressure feeding device, at least one part of the elastic cylindrical body having a restoring force is always provided by a roller or a pressing piece. The pressure is applied to create a closed state, and Due to the movement of the closed portion, the compressed air in the elastic cylinder is pressure-fed in one direction to continuously feed the compressed air into the pressure-feeding hose. It is characterized in that it is sent into the main feeding hose through a pressurizing joint provided at a position and the object to be pressured in the main feeding hose is forcibly fed toward the nozzle attached to the tip of the main feeding hose. Method of pumping concrete, mortar, soil, etc. 2. A roller, a constricting piece or the like always keeps any part of the elastic cylindrical body having a restoring force in a closed state, and the part of the elastically closed body is in a closed state. A mixing / stirring device is connected via a feeding hose to the inlet of the main pumping device configured to pump the object to be pumped in one direction by the movement. Connect the main air compressor that forcibly supplies air, connect the main feed hose to the outlet of the main pressure feed device,
On the other hand, by a roller, a constricting piece, etc., there is always a state in which any part of the elastic cylindrical body having a restoring force is confined and blocked, and by the movement of the part that is confined by the constriction, An auxiliary air compression device for forcibly supplying compressed air through a hose is connected to the inlet of the auxiliary pressure supply device that is configured to pressure-feed the compressed air in the elastic cylinder, Connect a pressure hose to the delivery port, connect the tip of this pressure hose to a pressurizing joint provided at an appropriate position of the main feed hose, and use compressed air in the main feed hose. Concrete, mortar, characterized by being configured to pressurize the pressure from the auxiliary pressure feeding device,
A pumping device for objects to be pumped such as soil.