CN205438877U - Muddy water agitating unit - Google Patents

Abstract

The utility model discloses a muddy water mixing device, which comprises a cylinder body, a fixed flange, a connecting shaft, a stirring shaft, a mud outlet, a high-pressure water injection port and a driving motor; the fixing flange is arranged on the side of the cylinder body, and the driving motor is arranged on a fixed On the blue, the connecting shaft is fixed on the output shaft of the drive motor, and the stirring shaft is fixed at the end of the connecting shaft; the mud outlet is set on the side of the cylinder, and the high-pressure water injection port is located on the upper part of the cylinder; the stirring shaft is located in the center of the cylinder. There are two groups of stirring pieces arranged on it. The muddy water mixing device provided by the utility model is suitable for the field of underground pipeline laying construction. It has a reasonable structure and is used in conjunction with the earth pressure balance pipe jacking machine. It adopts the form of muddy water excavation, which improves the excavation efficiency behind the pipe jacking machine and effectively controls water and soil. The pressure is balanced to prevent the ground from rising or settling, and to ensure the construction efficiency and construction quality of the pipe jacking machine.

Description

Mud water mixing device

technical field

The utility model relates to the technical field of underground pipeline laying construction, in particular to a muddy water mixing device.

Background technique

With the advancement of urbanization, the laying of bottom line pipelines has become the basic project of urban construction. At present, the pipe jacking construction method is widely used in urban pipeline laying.

Pipe jacking construction is a non-excavation construction method for laying underground pipelines, which is an environmentally friendly, safe and efficient construction process. Its working process is as follows: with the help of the thrust of the main jacking cylinder, the pipe jacking machine is pushed from the working well through the soil layer to the receiving well; at the same time, the pipeline following the pipe jacking machine is buried between the two wells .

There are two types of pipe jacking machines: mud-water balance type and earth pressure balance type

In order to keep the excavation surface stable, the mud-water balanced pipe jacking machine must fill the mud water tank with a certain pressure of mud water. The mud water can form a layer of impermeable mud film on the excavation face, and the mud film can prevent the mud water from seeping into the excavation face. Due to the mud-water balanced pipe jacking machine, the cutterhead opening rate is small, so it cannot be applied to the stratum containing sand and pebbles. It is only applicable to the soil layer, and the scope of use is limited.

In order to keep the excavation surface stable, the earth pressure balance pipe jacking machine must be filled with a certain pressure of soil in the soil pressure chamber to balance the soil pressure ahead. It can be used in various construction conditions. With its construction, it is difficult to unearth behind the pipeline. Regardless of manual transportation or mechanical trolley transportation, the efficiency of rear unearthed is not high, which affects the construction jacking.

In view of the great differences in geological conditions in my country, different cities are located in different strata, pipelines are buried at different depths, and strata are complex. Earth pressure balance pipe jacking machines have been widely used. Therefore, it is urgent to solve the problem of low excavation efficiency behind the pipe jacking machine.

Contents of the invention

The purpose of this utility model is to solve the above technical problems, to provide a muddy water mixing device with a reasonable structure, which is used in conjunction with an earth pressure balance pipe jacking machine, adopts the muddy water excavation form, improves the excavation efficiency behind the pipe jacking machine, and effectively controls water. , Earth pressure balance, prevent ground uplift or subsidence, and ensure the construction efficiency and construction quality of the pipe jacking machine.

Technical scheme of the utility model:

In order to solve the above technical problems, the utility model provides a muddy water mixing device, which includes a cylinder body, a fixed flange, a connecting shaft, a stirring shaft and a driving motor. The fixed flange is arranged on the side of the cylinder body, and the driving motor is arranged on the fixed flange. , the connecting shaft is fixed on the output shaft of the driving motor, and the stirring shaft is fixed at the end of the connecting shaft.

The slurry mixing device also includes a mud outlet and a high-pressure water injection port. The mud outlet is arranged on the side of the cylinder, and the high-pressure water injection port is located on the upper part of the cylinder; the stirring shaft is located in the center of the cylinder, and two sets of stirring blades are arranged on it.

Further, the agitating shaft is a seamless steel pipe, and a plug is provided at the end thereof to prevent mud from entering the agitating shaft and ensure the agitating effect of the agitating shaft.

Further, each group of stirring pieces is provided with three pieces, and the stirring pieces are evenly distributed on the stirring shaft in the circumferential direction.

Further, the length of the stirring piece is set in cooperation with the inner diameter of the cylinder, so as to maximize the stirring range and improve the stirring effect.

Further, the mud outlet is connected to the mud discharge pump, the high-pressure water injection port is connected to the water inlet pump, and the drainage pump and the mud discharge pump work together to control the balance of water and soil pressure inside the cylinder.

Further, the muddy water mixing device also includes an inspection port, which is arranged at the lower part of the cylinder, so that maintenance personnel can inspect and maintain the stirring shaft conveniently.

Further, the shape of the inspection opening is square, which is sealed by a blind plate.

Beneficial effects of the utility model:

The muddy water mixing device provided by the utility model is suitable for the field of underground pipeline laying construction. Its structure is reasonable, and it is used in conjunction with the earth pressure balance pipe jacking machine. It adopts the form of muddy water excavation, which improves the excavation efficiency behind the pipe jacking machine, and effectively controls water, The soil pressure is balanced to prevent the ground from rising or settling, and to ensure the construction efficiency and construction quality of the pipe jacking machine.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the structural representation of the stirring shaft of the utility model;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is the A direction view of Fig. 1;

Fig. 6 is a schematic diagram of the installation of the utility model on an earth pressure balance pipe jacking machine.

in:

1. Cylinder body; 2. Fixed flange; 3. Drive motor; 4. Connecting shaft; 5. Mud outlet; Nozzle; 11. Earth pressure balance pipe jacking machine; 12. Spiral excavator.

detailed description

Below in conjunction with specific embodiment and accompanying drawing, the muddy water stirring device of the present utility model is described in detail:

Fig. 1 is the structure schematic diagram of the muddy water stirring device of the present utility model, and it comprises cylinder body 1, fixed flange 2, connecting shaft 4, stirring shaft 7 and driving motor 3, and fixing flange 2 is arranged on the side of cylinder body 1, and driving motor 3 is arranged on the fixed flange 2, the connecting shaft 4 is fixed on the output shaft of the driving motor 3, and the stirring shaft 7 is fixed on the end of the connecting shaft 4.

The slurry mixing device also includes a mud outlet 5 and a high-pressure water injection port 10. The mud outlet 5 is arranged on the side of the cylinder 1, and the high-pressure water injection port 10 is located on the upper part of the cylinder 1. FIG. 2 is a left side view of FIG. 1.

The stirring shaft 7 is located in the center of the cylinder body 1, on which two groups of stirring blades 9 are arranged; Fig. 3 is a structural schematic diagram of the stirring shaft of the present utility model, which is connected to the end of the connecting shaft 4 by welding; the stirring shaft 7 is a seamless steel pipe, the end of which is provided with a plug to prevent mud from entering the stirring shaft 7 and ensure the stirring effect of the stirring shaft.

Fig. 4 is the left side view of Fig. 3, and each group of stirring blades 9 is provided with three pieces, and the stirring blades 9 are circumferentially evenly distributed on the stirring shaft 7; Stirring range, improve the effect of stirring.

The mud outlet 5 is connected to the mud discharge pump, the high-pressure water injection port 10 is connected to the water inlet pump, and the drainage pump and the mud discharge pump work together to control the balance of water and earth pressure inside the barrel 1 .

Fig. 5 is the A-direction view of Fig. 1, and described slurry mixing device also includes inspection port 6, and it is arranged on the bottom of cylinder body 1; The shape of described inspection port 6 is square, and it is sealed by blind plate, to facilitate Maintenance personnel inspect and repair the stirring shaft.

Fig. 6 is a schematic diagram of the installation of the utility model on the earth pressure balance pipe jacking machine. The earthwork inlet 8 on the muddy water mixing device is connected with the end of the screw excavator 12 on the earth pressure balance pipe jacking machine 11.

When the earth pressure balance pipe jacking machine 11 is working, the cutterhead at the front part will cut the earthwork and transport it to the cylinder body 1 of the muddy water mixing device through the screw excavator 12. The driving motor 3 drives the stirring shaft 7 to rotate, and the stirring shaft 7. Stirring plate 9 stirs the mud and water evenly, and then the mud is transported to the mud pool by the mud discharge pump through the mud outlet 5.

The muddy water mixing device provided by the utility model is suitable for the field of underground pipeline laying construction. Its structure is reasonable, and it is used in conjunction with the earth pressure balance pipe jacking machine. It adopts the form of muddy water excavation, which improves the excavation efficiency behind the pipe jacking machine, and effectively controls water, The soil pressure is balanced to prevent the ground from rising or settling, and to ensure the construction efficiency and construction quality of the pipe jacking machine.

Claims (7)

1. Muddy water mixing device, including cylinder body (1), fixed flange (2), connecting shaft (4), stirring shaft (7) and drive motor (3), fixed flange (2) is set on the cylinder body (1 ), the driving motor (3) is set on the fixed flange (2), the connecting shaft (4) is fixed on the output shaft of the driving motor (3), and the stirring shaft (7) is fixed on the end of the connecting shaft (4) It is characterized in that it also includes a mud outlet (5), a high-pressure water injection port (10), the mud outlet (5) is arranged on the side of the cylinder (1), and the high-pressure water injection port (10) is located at the side of the cylinder (1) The upper part; the stirring shaft (7) is located in the center of the cylinder (1), on which two sets of stirring pieces (9) are arranged. 2. The muddy water stirring device according to claim 1, characterized in that, the stirring shaft (7) is a seamless steel pipe, and a plug is provided at the end thereof. 3. The muddy water mixing device according to claim 1, characterized in that each group of stirring pieces (9) is provided with three pieces, and the stirring pieces (9) are evenly distributed on the stirring shaft (7) in the circumferential direction. 4. The muddy water stirring device according to claim 1, characterized in that the length of the stirring piece (9) is arranged in cooperation with the inner diameter of the cylinder (1). 5. The muddy water mixing device according to claim 1, characterized in that, the mud outlet (5) is connected to a mud discharge pump, and the high-pressure water injection port (10) is connected to a water inlet pump. 6. The muddy water stirring device according to claim 1, characterized in that, the muddy water stirring device further comprises an inspection port (6), which is arranged at the lower part of the cylinder body (1). 7. The slurry mixing device according to claim 6, characterized in that, the shape of the inspection opening (6) is square, which is sealed by a blind plate.