CN219137634U

CN219137634U - In-situ solidification stirring device

Info

Publication number: CN219137634U
Application number: CN202222911957.4U
Authority: CN
Inventors: 王成福; 胡晓武; 韩晓明; 张光伟; 马加志; 叶志坤; 夏晓喻; 吴迪; 王飞
Original assignee: Cccc Nanjing Construction Co ltd; CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
Current assignee: Cccc Nanjing Construction Co ltd; CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-06-06
Anticipated expiration: 2032-11-02

Abstract

The utility model provides an in-situ solidification stirring device, wherein a stirring head is arranged at the bottom of a stirring arm, a rotatable stirring rotary drum is arranged on the stirring head, T-shaped spiral blades are arranged on the outer wall of the stirring rotary drum, and the T-shaped spiral blades are intermittently distributed along a spiral line on the outer wall of the stirring rotary drum; the structure of the T-shaped helical blade is as follows: one end of the vertical blade is welded with the outer wall of the stirring rotary drum, the other end of the vertical blade is connected with the middle part of the annular blade, the cross section of the T-shaped spiral blade is in a T shape, and the T-shaped spiral blade is used for pulling the soil body; the edge of the end of the stirring rotary drum is provided with a helical blade which is used for enabling the soil body to move towards the T-shaped helical blade. Through the combination of the T-shaped helical blade and the helical blade, the curing agent can be well mixed with soil, and particularly, the mixing effect of the curing agent slurry is better.

Description

In-situ solidification stirring device

Technical Field

The utility model relates to the field of sludge curing devices, in particular to an in-situ curing stirring device.

Background

The lithology of a certain silt curing construction site is complex, and the layer sequence is mixed filled with soil, plain filled soil, clay, block stone mixed clay, silt powder clay, powder clay sandwiched gravel, powder clay mixed fine sand and the like. The poor geological conditions mainly comprise filling, loose structure, anisotropic mechanical properties and poor engineering properties. Soft soil is mainly composed of flowing plastic and soft plastic silt powdery clay, and has low strength and poor self-stability. The thickness of the sludge is 1-4 meters, and the average thickness is 2 meters. The surrounding environment of the project is complex, the construction period is compact, and the construction difficulty is high. The curing stirring device in the existing construction equipment generally adopts a conveying mode of compressed air powder conveying to convey powder curing agent to sludge, firstly, a large number of bubbles are generated, the particle size distribution of the bubbles is uneven, more holes are formed, and the bearing strength after curing is affected. Stirring blades in the prior art are unreasonably arranged, so that the curing agent is unevenly mixed. For example, a structure described in chinese patent document CN 208292829U, CN 204475310U.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an in-situ curing stirring device which can improve the mixing uniformity of curing agents.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the in-situ solidification stirring device is characterized in that a stirring head is arranged at the bottom of a stirring arm, a rotatable stirring rotary drum is arranged on the stirring head, T-shaped spiral blades are arranged on the outer wall of the stirring rotary drum, and the T-shaped spiral blades are intermittently distributed along a spiral line on the outer wall of the stirring rotary drum;

the structure of the T-shaped helical blade is as follows: one end of the vertical blade is welded with the outer wall of the stirring rotary drum, the other end of the vertical blade is connected with the middle part of the annular blade, the cross section of the T-shaped spiral blade is in a T shape, and the T-shaped spiral blade is used for pulling the soil body;

the edge of the end of the stirring rotary drum is provided with a helical blade which is used for enabling the soil body to move towards the T-shaped helical blade.

In the preferred scheme, be equipped with arc helical blade in the one end that the stirring rotary drum is close to the stirring arm, arc helical blade is along the circumference intermittent type distribution of stirring rotary drum outer wall, and arc helical blade is used for pushing the soil body to T type helical blade.

In the preferred scheme, be equipped with upset helical blade at the free end of stirring rotary drum, upset helical blade is along the circumference intermittent type distribution of stirring rotary drum outer wall, and upset helical blade surface is equipped with the shape of indent, and upset helical blade is used for pushing away the soil body from the stirring rotary drum.

In the preferred scheme, the bottom of the stirring arm is provided with a rotating shaft extending to two sides, and the two stirring drums are connected with the rotating shafts at two sides respectively;

and a curing agent pipeline is arranged on the stirring arm, the curing agent pipeline is connected with a curing agent branch pipeline at a position close to the stirring rotary drum, and a curing agent pipeline outlet of the curing agent branch pipeline is positioned at a position close to the stirring rotary drum.

In the preferred scheme, the curing agent pipeline is connected with a batching and conveying device, and the batching and conveying device is connected with a batching tank.

In a preferred scheme, the batching and conveying device is provided with a stirring device and a conveying device, the stirring device is used for stirring raw materials from a batching tank into curing agent slurry, and the conveying device comprises a slurry pump and is used for conveying the curing agent slurry to the vicinity of the stirring head.

In a preferred embodiment, the agitator arm is connected to an excavator.

According to the in-situ solidification stirring device provided by the utility model, the combination of the T-shaped spiral blade and the spiral blade can ensure that the solidifying agent is well mixed with the soil body, and especially the solidification agent slurry mixing effect is better.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic view of a stirring arm according to the present utility model.

FIG. 2 is a schematic view of the structure of the stirring drum according to the present utility model.

Fig. 3 is a schematic overall structure of the present utility model.

In the figure: arc helical blade 1, T helical blade 2, annular blade 21, perpendicular blade 22, upset helical blade 3, stirring rotary drum 4, curing agent branch line 5, curing agent pipeline export 51, stirring arm 6, curing agent pipeline 7, batching jar 8, batching and conveyor 9, excavator 10, stirring head 11.

Detailed Description

Example 1:

in the in-situ solidification stirring device shown in fig. 1-2, a stirring head 11 is arranged at the bottom of a stirring arm 6, a rotatable stirring rotary drum 4 is arranged on the stirring head 11, T-shaped helical blades 2 are arranged on the outer wall of the stirring rotary drum 4, and the T-shaped helical blades 2 are intermittently distributed along a spiral line on the outer wall of the stirring rotary drum 4;

the structure of the T-shaped helical blade 2 is as follows: one end of the vertical blade 22 is welded with the outer wall of the stirring drum 4, the other end of the vertical blade 22 is connected with the middle part of the annular blade 21, the cross section of the T-shaped helical blade 2 is in a T shape, and the T-shaped helical blade 2 is used for pulling the soil body and mixing along the axial direction;

at the edge of the end of the stirring drum 4, helical blades are provided for moving the soil body towards the T-shaped helical blades 2.

In the preferred scheme, as shown in fig. 2, an arc-shaped helical blade 1 is arranged at one end of a stirring drum 4, which is close to a stirring arm 6, the arc-shaped helical blade 1 is intermittently distributed along the circumference of the outer wall of the stirring drum 4, and the arc-shaped helical blade 1 is used for pushing soil to a T-shaped helical blade 2;

in the preferred scheme, as shown in fig. 2, a turnover helical blade 3 is arranged at the free end of the stirring rotary drum 4, the turnover helical blade 3 is intermittently distributed along the circumference of the outer wall of the stirring rotary drum 4, the surface of the turnover helical blade 3 is provided with a concave shape, and the turnover helical blade 3 is used for pushing soil away from the stirring rotary drum 4.

In the preferred scheme, the bottom of the stirring arm 6 is provided with rotating shafts extending to two sides, and the two stirring drums 4 are connected with the rotating shafts at two sides respectively; the rotation shaft is inclined by 3-5 degrees towards the bottom of the stirring arm 6.

As shown in fig. 1, the stirring arm 6 is provided with a curing agent line 7, the curing agent line 7 is connected to the curing agent branch line 5 at a position near the stirring drum 4, and the curing agent line outlet 51 of the curing agent branch line 5 is located near the stirring drum 4.

In the preferred embodiment, as shown in fig. 3, the curing agent line 7 is connected to a dosing and delivery device 9, and the dosing and delivery device 9 is connected to a dosing tank 8.

In a preferred embodiment, as shown in fig. 3, the batching and transporting device 9 is provided with a stirring device for stirring the raw materials from the batching tank 8 into a curing agent slurry, and a transporting device comprising a slurry pump for transporting the curing agent slurry to the vicinity of the stirring head 11.

In a preferred embodiment, the agitator arm 6 is connected to the excavator 10. The agitator arm 6 is placed by the excavator 10 in the sludge at the location where solidification is desired.

When the mixing drum is used, the mixing tank 8 is used for mixing the ingredients according to the design components, the ingredients are conveyed to the mixing and conveying device 9 through a conveying device, such as a belt conveyor and a lifting machine, the mixing device in the mixing and conveying device 9 is used for mixing the ingredients into curing agent slurry, a slurry pump is used for conveying the curing agent slurry to the position of the stirring head 11 through the curing agent pipeline 7, the curing agent branch pipeline 5 and the curing agent pipeline outlet 51, a hydraulic motor is arranged on the stirring head 11, the stirring drum 4 is driven to rotate by the hydraulic motor, the arc-shaped helical blade 1 rotates to push the soil and the curing agent slurry to the T-shaped helical blade 2, the T-shaped helical blade 2 enables the soil and the curing agent slurry to be fully mixed and axially move, and the mixed soil leaves the stirring drum 4 at the position of the turning helical blade 3, so that the soil and the curing agent slurry are fully mixed. The mixing efficiency of the present utility model was found to be superior to the prior art constructions. In a certain sludge construction curing site, sludge at the bottom of a lake needs to be treated, the surface of the sludge is a sludge layer, the average thickness is 2.3m, the average water content is 61.4%, the average weight is 15.4KN/m, the lower part of the sludge layer is a clay layer, and the thickness range is 0.5-2 m. The mixing amount of the sludge curing agent is 12 percent after test. By adopting the scheme of the utility model for solidification treatment, the bearing capacity fak of the 7d foundation of the reinforced soil body is more than or equal to 100kpa, the bearing capacity fak of the 28d foundation is more than or equal to 120kpa, and the solidified soil body meets the requirement that the stability is not reduced along with the age without lateral limit strength under the condition of in-situ underground water on site.

The foregoing embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. An in-situ solidification stirring device is characterized in that: the bottom of the stirring arm (6) is provided with a stirring head (11), the stirring head (11) is provided with a rotatable stirring rotary drum (4), the outer wall of the stirring rotary drum (4) is provided with T-shaped helical blades (2), and the T-shaped helical blades (2) are intermittently distributed along a spiral line on the outer wall of the stirring rotary drum (4);

the structure of the T-shaped helical blade (2) is as follows: one end of the vertical blade (22) is welded with the outer wall of the stirring rotary drum (4), the other end of the vertical blade (22) is connected with the middle part of the annular blade (21), the cross section of the T-shaped helical blade (2) is in a T shape, and the T-shaped helical blade (2) is used for pulling the soil body;

the edge of the end of the stirring drum (4) is provided with a helical blade which is used for enabling the soil body to move towards the T-shaped helical blade (2).

2. The in-situ solidification stirring device of claim 1, wherein: one end of the stirring rotary drum (4) close to the stirring arm (6) is provided with an arc-shaped helical blade (1), the arc-shaped helical blade (1) is intermittently distributed along the circumference of the outer wall of the stirring rotary drum (4), and the arc-shaped helical blade (1) is used for pushing soil bodies to the T-shaped helical blade (2).

3. The in-situ curing stirring device according to claim 1 or 2, characterized in that: the free end of the stirring rotary drum (4) is provided with turning spiral blades (3), the turning spiral blades (3) are intermittently distributed along the circumference of the outer wall of the stirring rotary drum (4), the surface of the turning spiral blades (3) is provided with a concave shape, and the turning spiral blades (3) are used for pushing soil away from the stirring rotary drum (4).

4. A cure in place stirring apparatus as set forth in claim 3 wherein: the bottom of the stirring arm (6) is provided with a rotating shaft extending to two sides, and the two stirring drums (4) are connected with the rotating shafts at two sides respectively;

the stirring arm (6) is provided with a curing agent pipeline (7), the curing agent pipeline (7) is connected with the curing agent branch pipeline (5) at a position close to the stirring rotary drum (4), and a curing agent pipeline outlet (51) of the curing agent branch pipeline (5) is positioned at a position close to the stirring rotary drum (4).

5. The in-situ solidification stirring device of claim 4, wherein: the curing agent pipeline (7) is connected with the batching and conveying device (9), and the batching and conveying device (9) is connected with the batching tank (8).

6. The in-situ solidification stirring device of claim 5, wherein: the batching and conveying device (9) is provided with a stirring device and a conveying device, the stirring device is used for stirring raw materials from the batching tank (8) into curing agent slurry, and the conveying device comprises a slurry pump and is used for conveying the curing agent slurry to the vicinity of the stirring head (11).

7. The in-situ solidification stirring device of claim 6, wherein: the stirring arm (6) is connected with the excavator (10).