In-situ curing stirring head for plastic flow sludge

Abstract

The utility model relates to an in-situ solidification stirring head for sludge, which belongs to the technical field of sludge solidification and comprises a stirring arm, a stirring drill rod, an outer slurry outlet pipe and an inner slurry outlet, the stirring drill rod is mechanically connected to the bottom end of the stirring arm and distributed on two sides of the stirring arm, and the stirring drill rod comprises a stirring rotating shaft, a stirring rotating head and stirring blades. And the outer slurry outlet pipe is fixedly connected to the stirring arm. According to the in-situ curing stirring head for the sludge, more stirring blades are arranged on the in-situ curing stirring head, so that the stirring uniformity of the curing stirring head is higher, the size of the stirring blades can be adjusted according to the state of the sludge, the curing effect is higher, and the overall size of the stirring head can be adjusted by increasing or decreasing the number of stirring rotating shafts; the in-situ curing stirring head can meet the requirement of higher construction efficiency, so that the advantage of good stirring effect is achieved, and the problems that a conventional in-situ curing stirring head is not suitable for plastic flow sludge, and slurry return of a curing material is serious and the stirring uniformity is poor in plastic flow sludge curing construction are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge solidification, in particular to an in-situ solidification stirring head for sludge. Background Technique

[0002] In recent years, due to the large site area and sparse population, the coastal fringe areas have become an important land source for production-oriented industrial and mining enterprises. However, the foundations of these coastal areas are mainly composed of marine sludge, with poor natural bearing capacity, and it is necessary to reinforce these large areas of soft foundations. Chemical in-situ solidification can well solve the problem of poor bearing capacity of these soft foundations due to its low cost, short construction period, and simple construction.

[0003] For some coastal areas composed of sludge dredged and reclaimed from the sea, due to the short reclamation time, these sludges have high water content and strong fluidity. For the solidification of such marine sludges, the solidification effect of the conventional forced stirring head used in in-situ solidification is poor, and there are mainly the following problems: (1) The slurry outlet of the conventional in-situ solidification stirring head is generally located in the middle of the stirring rod, and the distance between the slurry outlet and the stirring blade is far. During the stirring construction of fluid sludge, it is particularly easy to have slurry return, resulting in a low retention amount of the solidification material in the target solidification area, insufficient admixture amount, and poor solidification effect; (2) The viscosity of the conventional soft foundation sludge is large, the water content is low, and the stirring rate is high, resulting in a large stirring resistance. The number of stirring blades on the conventional stirring head is small, and the length of the stirring blades is short, so the stirring uniformity per unit time is poor; (3) The overall size of the conventional in-situ solidification stirring head is small, and the construction efficiency is low.

[0004] To sum up, since the conventional in-situ solidification stirring head is not suitable for fluid sludge, during the in-situ solidification construction of fluid sludge, it is extremely easy to have serious slurry return of the solidification material, poor stirring uniformity, and low solidification efficiency. Therefore, it is necessary to develop a new type of in-situ solidification stirring head to be suitable for the construction of fluid sludge in coastal areas, so an in-situ solidification stirring head for sludge is proposed to solve the problems raised above. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an in-situ solidification stirring head for sludge, which has the advantages of good stirring effect, etc., and solves the problems that the conventional in-situ solidification stirring head is not suitable for fluid sludge, and it is extremely easy to have serious slurry return of the solidification material and poor stirring uniformity during the in-situ solidification construction of fluid sludge.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An in-situ solidification stirring head for silt, comprising a stirring arm, a stirring drill rod, an external slurry outlet pipe, and an internal slurry outlet. The stirring drill rod is mechanically connected to the bottom end of the stirring arm and is distributed on both sides of the stirring arm. The stirring drill rod includes a stirring rotating shaft, a stirring head, and stirring blades. The external slurry outlet pipe is fixedly connected to the stirring arm, and the internal slurry outlet is located at the center of the stirring head.

[0007] Further, the included angle between the central axis of the stirring drill rod and the stirring arm is 50 - 80 degrees, and the diameter of the stirring drill rod is 0.8 - 1.5 m.

[0008] Further, the number of stirring drill rods on each side of the stirring arm is respectively 1 - 3 stirring rotating shafts and 1 stirring head, and each stirring rotating shaft is provided with 3 - 5 stirring blades, and each stirring head is provided with 5 - 10 stirring blades.

[0009] Further, the stirring blades are long spiral-shaped, and are biased towards the central axis of the stirring arm, and are fixed to the stirring drill rod by bolts. The length of the stirring blades is 30 - 80 cm.

[0010] Further, the external slurry outlet pipe includes 2 slurry outlets, the slurry outlets are located at the bottom end of the stirring blades, and the slurry outlets face the stirring rotating shafts on both sides of the stirring arm.

[0011] Compared with the prior art, the present utility model provides an in-situ solidification stirring head for silt, having the following beneficial effects:

[0012] 1. For the in-situ solidification stirring head for silt, by providing more stirring blades on the in-situ solidification stirring head, the stirring uniformity of the solidification stirring head is stronger, and the size of the stirring blades can be adjusted according to the state of the silt, the solidification effect is stronger. Moreover, the overall size of the stirring head can be adjusted by increasing or decreasing the stirring rotating shafts to meet the needs of greater construction efficiency, thus achieving the advantage of good stirring effect, and solving the problems that the conventional in-situ solidification stirring head is not applicable to flowing silt, and it is extremely easy to have serious backflow of the solidification material and poor stirring uniformity during the solidification construction of flowing silt.

[0013] 2. For the in-situ solidification stirring head for silt, by using 4 curing agent outlets, 2 outer internal slurry outlets, and 2 middle external slurry outlets, the spatial uniform distribution of the curing agent is realized, and each curing agent outlet is located near the bottom of the stirring blades. The curing agent can be quickly and evenly dispersed in the silt by the stirring blades after being transported from the outlet to the silt, preventing backflow and ensuring that the curing agent material is evenly incorporated into the silt. Description of the Drawings

[0014] Figure 1 It is a structural schematic diagram of the present utility model.

[0015] In the figure: 1, stirring arm; 2, stirring drill pipe; 21, stirring rotating shaft; 22, stirring head; 23, stirring blade; 3, external slurry outlet pipe; 4, internal slurry outlet. Specific implementation mode

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0017] Please refer to Figure 1 , an in-situ solidification stirring head for silt, including a stirring arm 1, a stirring drill pipe 2, an external slurry outlet pipe 3 and an internal slurry outlet 4. The stirring drill pipe 2 is mechanically connected to the bottom end of the stirring arm 1 and is distributed on both sides of the stirring arm 1. The stirring drill pipe 2 includes a stirring rotating shaft 21, a stirring head 22 and a stirring blade 23. The external slurry outlet pipe 3 is fixedly connected to the stirring arm 1, and the internal slurry outlet 4 is located at the center of the stirring head 22.

[0018] Specifically, the included angle between the central axis of the stirring drill pipe 2 and the stirring arm 1 is 50-80 degrees, and the diameter of the stirring drill pipe 2 is 0.8-1.5 m. There are 1-3 stirring rotating shafts 21 and 1 stirring head 22 on each side of the stirring arm 1, and each stirring rotating shaft 21 is provided with 3-5 stirring blades 23, and each stirring head 22 is provided with 5-10 stirring blades 23. By arranging more stirring blades on the in-situ solidification stirring head, the stirring uniformity of the solidification stirring head is stronger, and the size of the stirring blade 23 can be adjusted according to the state of the silt, and the solidification effect is stronger. Moreover, the overall size of the stirring head can be adjusted by increasing or decreasing the stirring rotating shaft 21 to meet the needs of higher construction efficiency, so as to achieve the advantage of good stirring effect, effectively solving the problem that the conventional in-situ solidification stirring head is not suitable for flowing silt, and it is easy to have serious backflow of solidification materials and poor stirring uniformity during the solidification construction of flowing silt.

[0019] Further specifically, the stirring blade 23 is in a long spiral shape, and is biased towards the central axis of the stirring arm 1, and is fixed to the stirring drill pipe 2 by bolts. The length of the stirring blade 23 is 30-80 cm.

[0020] It can be understood that the size of the stirring blade 23 can be adjusted according to the state of the silt, and the overall size of the stirring head can be adjusted by increasing or decreasing the stirring rotating shaft 21 to meet the needs of higher construction efficiency, so as to have a good solidification effect on the silt, especially for flowing silt, and the solidification efficiency can be greatly improved.

[0021] During use, the stirring power is hydraulically driven. During in-situ solidification construction, first, the stirring head 22 digs downward for construction. The stirring head 22 is relatively short, breaking the dried surface silt. As the stirring depth increases, the rapid and uniform stirring of the silt is achieved by the stirring blades 23 on the stirring drill rod 2. The number of stirring drill rods 2 can be increased or decreased according to the silt state. When the silt has strong fluidity, the number of stirring drill rods 2 is increased; conversely, it is appropriately reduced. Through the long stirring blades 23 on the stirring drill rod 2, the single-construction efficiency is high, and with 4 slurry outlets, it ensures the uniform mixing of the curing agent slurry and stirring, achieving the efficient stirring and solidification of marine silt.

[0022] In this embodiment, the external slurry pipe 3 includes 2 slurry outlets, which are located at the bottom end of the stirring blade 23, and the slurry outlets face the stirring rotating shafts 21 on both sides of the stirring arm 1.

[0023] The working principle of the above embodiment is as follows:

[0024] During in-situ solidification construction, first, the stirring head 22 digs downward for construction. The stirring head 22 is relatively short, breaking the dried surface silt. As the stirring depth increases, the rapid and uniform stirring of the silt is achieved by the stirring blades 23 on the stirring drill rod 2. The number of stirring drill rods 2 can be increased or decreased according to the silt state. When the silt has strong fluidity, the number of stirring drill rods 2 is increased; conversely, it is appropriately reduced. Through the long stirring blades 23 on the stirring drill rod 2, the single-construction efficiency is high, and with 4 slurry outlets, it ensures the uniform mixing of the curing agent slurry and stirring, achieving the efficient stirring and solidification of marine silt.

[0025] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can realize the control of the electrical components through simple programming, and the existing publicly disclosed power connection technology also belongs to the common knowledge in this field. Therefore, the specific structural composition and working principle are not elaborated too much in this embodiment.

[0026]

[0027] ​It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-situ solidification stirring head for silt, characterized in that: It includes a stirring arm (1), a stirring drill pipe (2), an external slurry outlet pipe (3) and an internal slurry outlet (4). The stirring drill pipe (2) is mechanically connected to the bottom end of the stirring arm (1) and is distributed on both sides of the stirring arm (1). The stirring drill pipe (2) includes a stirring rotating shaft (21), a stirring head (22) and stirring blades (23). The external slurry outlet pipe (3) is fixedly connected to the stirring arm (1), and the internal slurry outlet (4) is located at the center of the stirring head (22).

2. The in-situ solidification stirring head for silt according to claim 1, wherein: The included angle between the central axis of the stirring drill pipe (2) and the stirring arm (1) is 50 - 80 degrees, and the diameter of the stirring drill pipe (2) is 0.8 - 1.5 m.

3. The in-situ solidification stirring head for silt according to claim 1, characterized in that: On each side of the stirring arm (1), the number of stirring drill pipes (2) is respectively 1 - 3 stirring rotating shafts (21) and 1 stirring head (22), and each stirring rotating shaft (21) is provided with 3 - 5 stirring blades (23), and each stirring head (22) is provided with 5 - 10 stirring blades (23).

4. The in-situ solidification stirring head for silt according to claim 1, characterized in that: The stirring blades (23) are long spiral-shaped, and are biased towards the central axis direction of the stirring arm (1), and are fixed to the stirring drill pipe (2) by bolts. The length of the stirring blades (23) is 30 - 80 cm.

5. The in-situ solidification stirring head for silt according to claim 1, characterized in that: The external slurry outlet pipe (3) includes 2 slurry outlets. The slurry outlets are located at the bottom end of the stirring blades (23), and the slurry outlets face the stirring rotating shafts (21) on both sides of the stirring arm (1).

Images