CN217055199U - Automatic grouting device for pseudoplastic fluid - Google Patents

Abstract

The utility model relates to the technical field of shield tunnel grouting, and discloses a pseudoplastic fluid automatic grouting device, which comprises a liquid pool A, a liquid pool B and a mixer; the mixer is of a cylindrical double-layer structure, the outer layer of the mixer is a liquid B cabin, the outer wall of the liquid B cabin is provided with a liquid B injection port, a liquid B pool is communicated with the liquid B cabin through a liquid B pipeline, the inner layer of the mixer is a mixing cabin, the bottom of the mixing cabin is provided with a liquid A injection port, and the liquid A pool is communicated with the mixing cabin through a liquid A pipeline; nozzles are uniformly arranged on the wall surface of the mixer where the liquid B bin is connected with the mixing bin along the circumferential direction and the longitudinal direction; the bottom of the side wall of the mixing bin is provided with a discharge port, and valves are arranged at the positions of the liquid A pipeline, the liquid B pipeline and the discharge port. Compared with the traditional double-slurry grouting device, the utility model has the advantages that the mixing nozzle is reformed into the mixer, so that a better mixing effect is achieved; when mixing, liquid B pours into liquid A along all directions into, guarantees liquid B evenly distributed when pouring into liquid A into, avoids concentrating and produces the caking phenomenon.

Description

Automatic grouting device for pseudoplastic fluid

Technical Field

The utility model relates to a shield tunnel slip casting technical field, concretely relates to pseudoplastic fluid automatic grouting device.

Background

With the development of cities, underground rail traffic of various big cities develops rapidly in recent years, and most urban subway tunnels are constructed by adopting a shield method. Because the radius of the shield cutter head is larger than that of the shield shell, when the shield machine passes through the excavated stratum, an annular gap exists between the middle shield and the stratum, which is also a big reason for surface subsidence caused by shield excavation. The method of filling a filling material into the annular gap is usually adopted for processing, the commonly used annular gap grouting material is a double-slurry mixed material, most of the double-slurry mixed material is a pseudoplastic non-Newtonian fluid, the fluidity of the double-slurry mixed material is obviously influenced by the stirring time, the stirring speed and the AB-liquid ratio, and the construction quality of the double-slurry grouting performed by adopting the traditional mixed nozzle is greatly reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model provides a pseudoplastic fluid automatic grouting device, which aims to solve the problem of the shield construction annular gap double-slurry grouting process; the method can provide better mixing effect and grouting efficiency for most of pseudoplastic double-slurry grouting materials.

In order to realize the technical purpose, the utility model discloses a technical scheme is:

an automatic grouting device for pseudoplastic fluid comprises a liquid A tank, a liquid B tank and a mixer; the mixer is of a cylindrical double-layer structure, the outer layer of the mixer is a liquid B cabin, the outer wall of the liquid B cabin is provided with a liquid B injection port, a liquid B pool is communicated with the liquid B cabin through a liquid B pipeline, the inner layer of the mixer is a mixing cabin, the bottom of the mixing cabin is provided with a liquid A injection port, and the liquid A pool is communicated with the mixing cabin through a liquid A pipeline; nozzles are uniformly arranged on the wall surface of the mixer, which is connected with the liquid bin B and the mixing bin, along the circumferential direction and the longitudinal direction; mixing bin lateral wall bottom is provided with the discharge gate, liquid A pipeline, liquid B pipeline, discharge gate department all are provided with the valve.

Further, a second stirring device is connected to the mixer through a second motor.

Further, the second stirring device comprises at least two stirring rods which are arranged in parallel with the rotating shaft of the second motor.

Further, the stirring rod is connected with a third motor.

Furthermore, a pressurizing opening is formed in the middle upper part of the side wall of the mixing bin; and a mixing grouting pump is arranged outside the pressurizing port.

Further, the nozzle is a one-way nozzle.

Preferably, a control ball is arranged at the nozzle opening of the nozzle, and the rear end of the control ball is connected with a spring arranged in the accommodating cavity.

Further, a first stirring device is arranged in the liquid pool A or/and the liquid pool B and connected with a first motor.

Further, be provided with A liquid pipeline pump, A flow valve on the A liquid pipeline, be equipped with B liquid pipeline pump, B flow valve on the B liquid pipeline, B liquid pipeline both ends all are equipped with the valve.

Further, still include PLC control terminal, PLC control terminal is connected with first motor, second motor, third motor, A liquid pipeline pump, A flow valve, B liquid pipeline pump, B flow valve, mixing grouting pump, valve electricity.

Compared with the prior art, the beneficial effects of the utility model are that:

1) compared with the traditional double-slurry grouting device, the pseudoplastic fluid automatic grouting device of the utility model reforms the mixing nozzle into a mixer to achieve better mixing effect; the wall surface of the liquid B cabin in the mixer, which is connected with the mixing cabin, is uniformly provided with nozzles along the circumferential direction and the longitudinal direction, and the liquid B is sprayed in all directions during stirring, so that the liquid B is ensured to be uniformly distributed during the injection of the liquid A, and the phenomenon of centralized agglomeration is avoided;

2) the utility model discloses a blender adopts double helix planet mixer among the automatic slip casting device of pseudoplastic fluid, "pole-climbing effect" when can avoiding the stirring of pseudoplastic fluid;

3) the utility model can adjust the stirring time, the stirring speed and the AB liquid ratio of the double-slurry mixing according to different stratum requirements;

4) the utility model discloses an automatic slip casting device of pseudo-plastic fluid can realize slip casting process automation, practices thrift the human cost, improves efficiency of construction, construction quality.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the mixer in the embodiment shown in FIG. 1;

fig. 3 is an enlarged schematic view of the nozzle.

Reference numerals are as follows: 1. a liquid B injection port; 2. a stirring rod; 3. b, a liquid bin; 3-1, a nozzle; 3-2, controlling the ball; 3-3, a spring; 4. a liquid injection port A; 5. a discharge port; 6. a mixing bin; 7. a pressurizing port; 8. a liquid B pool; 9. a liquid pool A; 10. a mixer; 11. a, a flow valve; 12. b, a flow valve; 20-a PLC control terminal;

liquid pipeline pumps P1 and B; p2, liquid A pipeline pump; p3, blend grouting pump; m1, a first motor; m3, a second motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

As shown in fig. 1 and fig. 2, the automatic grouting device for pseudoplastic fluid comprises a liquid A tank 9, a liquid B tank 8 and a mixer 10; the mixer 10 is of a cylindrical double-layer structure, the outer layer of the mixer is a liquid B bin 3, the outer wall of the liquid B bin 3 is provided with a liquid B injection port 1, a liquid B pool 8 is communicated with the liquid B bin 3 through a liquid B pipeline, the inner layer of the mixer is a mixing bin 6, the bottom of the mixing bin 6 is provided with a liquid A injection port, and a liquid A pool 9 is communicated with the mixing bin 6 through a liquid A pipeline; the wall surface of the mixer 10, which is connected with the liquid B bin 3 and the mixing bin 6, is uniformly provided with liquid B nozzles 3-1 along the circumferential direction and the longitudinal direction; a discharge port 5 is formed in the bottom of the side wall of the mixing bin 6, and valves are arranged at the liquid A pipeline, the liquid B pipeline and the discharge port 5; the upper portion is equipped with pressure port 7 in the 6 lateral walls of mixing bin, pressure port 7 outside is provided with mixing grouting pump P3.

A first stirring device is arranged in the liquid A pool 9 or/and the liquid B pool 8 and is connected with a first motor M1; be provided with A liquid pipeline pump P2, A flow valve 11 on the A liquid pipeline, A liquid pipeline both ends all are equipped with the valve, be equipped with B liquid pipeline pump P1, flow B flow valve 12 on the B liquid pipeline, B liquid pipeline both ends all are equipped with the valve.

A second stirring device 2 is connected in the mixer 10 through a second motor M3, in a preferred embodiment, the second stirring device 2 comprises at least two stirring rods arranged in parallel with the rotating shaft of the second motor, and the stirring rods can revolve along the rotating shaft of the second motor; furthermore, the stirring rod is connected with a third motor, and the third motor drives the stirring rod to rotate along the central shaft of the stirring rod; the double-helix planetary mixer is formed, and the pole climbing effect during mixing of the pseudoplastic fluid can be avoided.

The nozzle 3-1 is a one-way nozzle, specifically, as shown in fig. 3, a control ball 3-2 is arranged at a nozzle opening of the nozzle, the rear end of the control ball 3-2 is connected with a spring 3-3 arranged in the accommodating cavity, the control ball 3-2 is extruded under the action of external pressure, and then the spring 3-3 is compressed, the nozzle opening is opened, and the liquid B flows in; after the external pressure is lost, the control ball 3-2 returns to the original position under the resilience force of the spring 3-3 to block the nozzle opening.

Still include PLC control terminal 20, PLC control terminal 20 is connected with first motor M1, second motor M3, A liquid pipeline pump P2, A flow valve 11, B liquid pipeline pump P1, B flow valve 12, mixed grouting pump P3, valve electricity.

With reference to fig. 1, fig. 2 and fig. 3, the present invention has the following steps:

s1, adding the water glass liquid into the liquid B pool, adding the mud-killing powder and water into the liquid A pool, and controlling the rotating speed and time of the M1 motor through a PLC terminal to stir the liquid A;

s2, after the liquid A is stirred, controlling a valve of a liquid A pipeline and a liquid A pipeline pump to be opened through a PLC terminal, directly injecting the liquid A into a mixing bin of a mixer after the liquid A passes through the liquid A pipeline pump and a flow valve A, and closing the valve at a liquid A injection inlet after a preset amount is reached;

s3, injecting the liquid B into a liquid B bin of the mixer through a liquid B pipeline pump P1 and a flow valve B;

s4, closing a valve at a liquid B pool through a PLC terminal, starting a second motor M3 and a third motor of a second stirring device in the mixer, continuously pressurizing the liquid B bin through a liquid B pipeline pump P1 to enable the pressure in the liquid B bin to be larger than that in the mixing bin, and spraying the liquid B into the mixing bin along all directions through nozzles uniformly arranged on the wall surface;

and S5, after the mixture is fully mixed in the mixing bin, closing a valve at a liquid B injection port through a PLC terminal, opening a pump P3 at a pressure outlet of the mixing bin, pressurizing the mixing bin, and pumping the mixture out of a discharge port of the mixing bin to perform wall postgrouting.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims (10)

1. An automatic grouting device for pseudoplastic fluid comprises a liquid A tank (9), a liquid B tank (8) and a mixer (10); the method is characterized in that: the mixer (10) is of a cylindrical double-layer structure, the outer layer of the mixer is a liquid B bin (3), the outer wall of the liquid B bin (3) is provided with a liquid B injection port (1), a liquid B pool (8) is communicated with the liquid B bin (3) through a liquid B pipeline, the inner layer of the mixer is a mixing bin (6), the bottom of the mixing bin (6) is provided with a liquid A injection port (4), and a liquid A pool (9) is communicated with the mixing bin (6) through a liquid A pipeline; the wall surface of the mixer (10) where the liquid bin (3) B is connected with the mixing bin (6) is uniformly provided with nozzles (3-1) along the circumferential direction and the longitudinal direction; mix storehouse (6) lateral wall bottom and be provided with discharge gate (5), liquid pipeline A, liquid pipeline B, discharge gate (5) department all are provided with the valve.

2. The automated pseudoplastic fluid grouting device of claim 1, wherein: the mixer (10) is internally connected with a second stirring device (2) through a second motor (M3).

3. The automated pseudoplastic fluid grouting device of claim 2, characterized in that: the second stirring device (2) comprises at least two stirring rods which are arranged in parallel with the rotating shaft of a second motor (M3), and the second motor drives the stirring rods to revolve along the rotating shaft of the second motor.

4. The automated pseudoplastic fluid grouting device of claim 3, wherein: the stirring rod is connected with a third motor, and the third motor drives the stirring rod to rotate.

5. The automated pseudoplastic fluid grouting device of claim 1, characterized in that: a pressurizing opening (7) is formed in the middle upper part of the side wall of the mixing bin (6); and a mixing grouting pump (P3) is arranged outside the pressurizing port (7).

6. The automated pseudoplastic fluid grouting device of claim 1, wherein: the nozzle (3-1) is a one-way nozzle.

7. The automated pseudoplastic fluid grouting device of claim 6, wherein: a control ball (3-2) is arranged at the nozzle opening of the nozzle (3-1), and the rear end of the control ball (3-2) is connected with a spring (3-3) arranged in the accommodating cavity.

8. The automated pseudoplastic fluid grouting device of claim 1, characterized in that: a first stirring device is arranged in the liquid pool A (9) or/and the liquid pool B (8) and is connected with a first motor (M1).

9. The automated pseudoplastic fluid grouting device of claim 1, wherein: be provided with A liquid pipeline pump (P2), A flow valve (11) on the A liquid pipeline, be equipped with B liquid pipeline pump (P1), B flow valve (12) on the B liquid pipeline.

10. The automated pseudoplastic fluid grouting device of claim 1, wherein: still include PLC control terminal (20), PLC control terminal (20) are connected with first motor (M1), second motor (M3), third motor, A liquid pipeline pump (P2), A flow valve (11), B liquid pipeline pump (P1), B flow valve (12), mixed grouting pump (P3), valve electricity.

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