Assembly type spraying and stirring drill bit

Abstract

The utility model discloses an assembly type spraying and stirring drill bit which comprises a hollow drill rod, a conical spraying head, a first stirring assembly and a second stirring assembly, the first stirring assembly and the second stirring assembly are arranged in a crossed mode, and the first stirring assembly comprises a first fixing piece and a first blade of a linear structure. One short side of each first blade is obliquely fixed on the corresponding first fixing piece, so that the two long sides of each first blade are arranged in a high-low staggered manner, and the inclination directions of the two first blades are opposite; the second stirring assembly comprises a second fixing piece and a second blade of an L-shaped structure. One short edge of the first section of the second blade is obliquely fixed to the second fixing piece, so that the two long edges of the second blade are arranged in a high-low staggered mode. The spraying and stirring drill bit is of an assembled structure and is flexible to install, reliable in connection and convenient to maintain and replace; the utility model has two kinds of blades, can be flexibly assembled, ensures the crushing and stirring effects of the undisturbed soil body, further ensures the continuity and uniformity of the diaphragm wall, and improves the construction quality.

Description

Technical Field

[0001] The utility model relates to the field of anti-seepage wall construction, in particular to an assembled jet-mixing drill bit. Background Art

[0002] The anti-seepage wall is a commonly used underground anti-seepage structure in water conservancy and hydropower projects, which plays an important role in ensuring the safety of the project and reliable operation. However, under complex geological conditions, the traditional anti-seepage wall construction technology of mixing piles often encounters problems such as drilling difficulties, poor overlap, and uneven slurry in actual projects, which affects the overall quality and performance of the anti-seepage wall. To this end, existing studies have reported a variety of innovative anti-seepage wall construction technologies, among which the high-jet mixing anti-seepage wall technology combines the advantages of high-pressure jet grouting and mechanical mixing piles, and is currently widely used in anti-seepage projects under complex geological conditions. For high-pressure jet grouting technology, high-jet mixing equipment is the key to affecting the construction progress and project quality. It includes a drill rod and a mixing blade installed on the drill rod. The existing blades and drill rods are generally welded, which are easy to break and fall off during the mixing process, and the drill rod is easy to be damaged during the installation process, affecting the injection pipe, resulting in poor spraying and water spraying, and thus affecting the quality of the anti-seepage wall. In addition, the existing blade structure is relatively simple, which affects the crushing effect and further affects the density of the anti-seepage wall. Summary of the invention

[0003] In view of this, the utility model proposes an assembled jet-mixing drill bit, which is easy to install and has reliable quality, effectively improves the construction efficiency and quality of the anti-seepage wall, and is particularly suitable for complex geological conditions.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The assembled jet-mixing drill bit of the utility model comprises a hollow drill rod and a conical nozzle arranged at the bottom of the hollow drill rod, and also comprises at least one group of first stirring components and at least one group of second stirring components, wherein the first stirring components and the second stirring components are arranged crosswise, and the first stirring component comprises a pair of first fixing members fixed to the lower part of the hollow drill rod by bolts and first blades in a straight-line structure fixed to each of the first fixing members, wherein one short side of the first blade is obliquely fixed to the first fixing member so that the two long sides of the first blade are arranged in a staggered manner, one high and one low, and the inclination directions of the two first blades are opposite;

[0006] The second stirring assembly includes a pair of second fixing members fixed to the lower part of the hollow drill rod by bolts and a second blade in an L-shaped structure fixed to each of the second fixing members, the second blade having a first section and a second section vertically connected to the end of the first section, a short side of the first section is obliquely fixed to the second fixing member so that its two long sides are staggered one high and one low, the second section is obliquely arranged downward, and the first sections of the two second blades are inclined in opposite directions;

[0007] The horizontal plane projections of the first blade and the second blade are staggered.

[0008] The beneficial effects are as follows: the jet-mixing drill bit of the utility model is an assembled structure, which is flexible to install and reliable to connect, and is convenient to repair and replace; the utility model has two blades, which ensure the crushing and mixing effect of the original soil, thereby ensuring the continuity and uniformity of the anti-seepage wall and improving the construction quality;

[0009] During actual installation, the utility model can flexibly assemble the first stirring component and the second stirring component according to the on-site conditions, so as to further ensure the crushing effect and the stirring effect.

[0010] Preferably, the stirring radius of the first blade is 0.3 m to 0.5 m; the stirring radius of the second blade is 0.3 m to 0.5 m, and the specific stirring radius can be determined according to the requirements of the anti-seepage wall.

[0011] Preferably, the first fixing member and the second fixing member both have a positioning groove that matches the lower part of the hollow drill rod, each groove wall of the first fixing member has a first fixing edge with an outward turn, and the first fixing edges of the two first fixing members are arranged opposite to each other and fixedly connected by bolts; each groove wall of the second fixing member has a second fixing edge with an outward turn, and the second fixing edges of the two second fixing members are arranged opposite to each other and fixedly connected by bolts. The beneficial effect is that the two first fixing members of the utility model are connected by bolts, and the two second fixing members are connected by bolts, the connection is reliable, and the disassembly is simple and convenient, which is convenient for later maintenance and replacement.

[0012] Preferably, the lower part of the hollow drill rod has a rectangular section, the first stirring assembly and the second stirring assembly are both fixed on the rectangular section, and the upper and lower parts of the rectangular section both have a limiting table for limiting. More preferably, a rectangular groove that matches the rectangular section is formed between the two second fixing members and the two first fixing members, effectively ensuring the reliable connection between the first stirring assembly and the rectangular section, and the reliable connection between the second stirring assembly and the rectangular section, and the limiting table can limit the first stirring assembly and the second stirring assembly, effectively avoiding up and down displacement.

[0013] Preferably, the assembled jet agitator drill bit of the utility model further includes a positioning assembly, which includes a pair of positioning plates with slots, each slot wall of the positioning plates has an outward-turned mounting edge, the two positioning plates are relatively mounted on the rectangular section, and the mounting edges of the two positioning plates are fixedly connected by bolts. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2is an exploded view of the first stirring assembly.

[0016] Figure 3 is an exploded view of the second stirring assembly.

[0017] Figure 4 It is a schematic diagram of a hollow drill rod.

[0018] Figure 5 is an exploded view of the positioning assembly.

[0019] Figure 6 It is another schematic diagram of the utility model. DETAILED DESCRIPTION

[0020] The following is a detailed description of an embodiment of the utility model in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0021] It should be noted that, in the description of the present utility model, relational terms such as "first" and "second" are merely 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.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] like Figure 1-3 As shown, the assembled jet-mixing drill bit of the utility model comprises a hollow drill rod 1, a conical nozzle 6 arranged at the bottom of the hollow drill rod 1, at least one group of first mixing components 2 and at least one group of second mixing components 3, the first mixing components 2 and the second mixing components 3 are arranged crosswise, the first mixing component 2 comprises a pair of first fixing members (i.e., first fixing plates 2.1) fixed to the lower part of the hollow drill rod 1 by bolts and first blades 2.2 in a straight-line structure fixed to each first fixing member (first fixing plate 2.1), one short side of the first blade 2.2 is tilted and fixed to the first fixing plate 2.1 so that the two long sides of the first blade 2.2 are staggered one high and one low, and the inclination directions of the two first blades 2.2 are opposite, and the two long sides of the first blade 2.2 are staggered one high and one low, so as to further ensure the crushing effect and mixing effect of the original soil;

[0024] The second stirring assembly 3 comprises a pair of second fixing members (i.e., second fixing plates 3.1) fixed to the lower part of the hollow drill rod 1 by bolts and second blades 3.2 of L-shaped structure fixed to each second fixing plate 3.1, the projections of the first blade 2.2 and the second blade 3.2 on the horizontal plane are staggered, preferably cross-staggered; the second blade 3.2 comprises a first section 3.2a and a second section 3.2b vertically connected to the end of the first section 3.2a, one short side of the first section 3.2a is tilted and fixed to the second fixing member so that its two long sides are staggered, one high and one low, and the second section 3.2b is tilted downward, the first sections 3.2a of the two second blades 3.2 are tilted in opposite directions, so that the second sections 3.2b of the two second blades 3.2 are also tilted in opposite directions; the second blade 3.2 is L-shaped (i.e., plow-shaped), and the second section 3.2b of the second blade 3.2 is arranged clockwise.

[0025] The utility model has two kinds of blades, which effectively guarantee the crushing and stirring effect of the original soil, thereby ensuring the continuity and uniformity of the anti-seepage wall and improving the construction quality; each group of first blades 2.2 is fixedly connected to the hollow drill rod 1 through a group of first fixing plates 2.1, and the first fixing plates 2.1 are connected by bolts, and each group of second blades 3.2 is fixedly connected to the hollow drill rod 1 through a group of second fixing plates 3.1, and the second fixing plates 3.1 are connected by bolts, which is simple and convenient to install, and convenient to repair and replace.

[0026] Combination Figure 1-4 It can be seen that the lower part of the hollow drill rod 1 has a rectangular section (i.e., the installation section), the first stirring assembly 2 and the second stirring assembly 3 are both fixed on the rectangular section, and the upper and lower parts of the rectangular section are both provided with a limiting table 4 for limiting the first stirring assembly 2 and the second stirring assembly 3; the first fixing plate 2.1 and the second fixing plate 3.1 both have a positioning groove that matches the lower part of the hollow drill rod 1, and the two first fixing plates 2.1 are arranged relative to each other to form a rectangular groove that matches the hollow drill rod 1;

[0027] Each groove wall of the first fixing plate 2.1 has a first fixing edge 2.3 with an outer flange, and the first fixing edges 2.3 of the two first fixing plates 2.1 are arranged relative to each other and are fixedly connected by bolts, thereby realizing the fixed connection between the first stirring component 2 and the drill rod, which is convenient for disassembly; the two second fixing plates 3.1 are arranged relative to each other to form a rectangular groove that matches the hollow drill rod 1, and each groove wall of the second fixing plate 3.1 has a second fixing edge 3.3 with an outer flange, and the second fixing edges 3.3 of the two second fixing plates 3.1 are arranged relative to each other and are fixedly connected by bolts. Among them, the first stirring component 2 and the second stirring component 3 are detachably connected to the hollow drill rod 1, which is convenient for replacement and has no effect on the drill rod.

[0028] In actual processing, the stirring radius of the first blade 2.2 is 0.3 m to 0.5 m; the stirring radius of the second blade 3.2 is 0.3 m to 0.5 m, which can be specifically determined according to the requirements of the anti-seepage wall.

[0029] When the first stirring component 2 and the second stirring component 3 are both a group, the positioning component 5 is required to limit the vertical position of the first stirring component 2 and the second stirring component 3. Figure 1 and Figure 5 It can be seen that the positioning assembly 5 includes a pair of positioning plates 5.1 with slots, each slot wall of the positioning plates 5.1 has an outward-turned mounting edge 5.2, the two positioning plates 5.1 are relatively mounted on the rectangular section, and the mounting edges 5.2 of the two positioning plates 5.1 are fixedly connected by bolts. The sum of the heights of the positioning plate 5.1, the first fixed plate 2.1 and the second fixed plate 3.1 is consistent with the rectangular section, thereby limiting the first stirring assembly 2 and the second stirring assembly 3 to avoid up and down movement during operation. Among them, the two first blades 2.2 and the two second blades 3.2 are arranged in a cross. During actual installation, the two second fixed plates 3.1 can be placed on both sides of the hollow drill rod 1 relative to each other, and then fixed together with bolts to achieve the connection between the second stirring assembly 3 and the hollow drill rod 1; similarly, the first stirring assembly 2 and the positioning assembly 5 can be installed in sequence on the rectangular section above the second stirring assembly 3, and the installation is simple and quick.

[0030] When the first stirring assembly 2 is one group and the second stirring assembly 3 is two groups, Figure 6 The installation method shown is that the first stirring component 2 is located in the middle, and the second stirring components 3 are installed above and below the first stirring component 2 respectively. The second blades 3.2 of the two second stirring components 3 correspond to each other up and down, and the first blades 2.2 and the second blades 3.2 are cross-shaped.

[0031] Of course, two groups of first stirring components 2 and one group of second stirring components 3 may also be used, that is, the second stirring component 3 is installed in the middle, and one group of first stirring components 2 is installed above and below the second stirring component 3. Of course, the first stirring component 2 and the second stirring component 3 may also be two or more groups, and it is only necessary to change the height of the first fixing plate and the second fixing plate.

[0032] In actual construction, the first stirring assembly 2 and the second stirring assembly 3 can be selected according to site requirements.

[0033] Finally, it should be emphasized that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An assembled jet drilling head, comprising a hollow drill rod and a conical nozzle arranged at the bottom of the hollow drill rod, characterized in that: It also includes at least one group of first stirring components and at least one group of second stirring components, wherein the first stirring components and the second stirring components are arranged crosswise, and the first stirring components include a pair of first fixing members fixed to the lower part of the hollow drill rod by bolts and first blades in a straight line structure fixed to each of the first fixing members, wherein one short side of the first blade is obliquely fixed to the first fixing member so that the two long sides of the first blade are arranged in a staggered manner, one high and one low, and the inclination directions of the two first blades are opposite; The second stirring assembly includes a pair of second fixing members fixed to the lower part of the hollow drill rod by bolts and a second blade in an L-shaped structure fixed to each of the second fixing members, the second blade having a first section and a second section vertically connected to the end of the first section, a short side of the first section is obliquely fixed to the second fixing member so that its two long sides are staggered one high and one low, the second section is obliquely arranged downward, and the first sections of the two second blades are inclined in opposite directions; The horizontal plane projections of the first blade and the second blade are staggered.

2. The assembled jet drilling bit according to claim 1, characterized in that: The stirring radius of the first blade is 0.3 m to 0.5 m; The stirring radius of the second blade is 0.3m to 0.5m.

3. The assembled jet drilling bit according to claim 1, characterized in that: The first fixing member and the second fixing member both have a positioning groove that cooperates with the lower part of the hollow drill rod, each groove wall of the first fixing member has a first fixing edge with an outward turnup, and the first fixing edges of the two first fixing members are arranged opposite to each other and fixedly connected by bolts; each groove wall of the second fixing member has a second fixing edge with an outward turnup, and the second fixing edges of the two second fixing members are arranged opposite to each other and fixedly connected by bolts.

4. The assembled jet drilling bit according to claim 3 is characterized in that: The lower part of the hollow drill rod has a rectangular section, the first stirring assembly and the second stirring assembly are both fixed on the rectangular section, and the upper and lower parts of the rectangular section both have limiting tables for limiting.

5. The assembled jet drilling bit according to claim 4, characterized in that: A rectangular groove matching with the rectangular segment is formed between the two second fixing members and between the two first fixing members.

6. The assembled jet drilling bit according to claim 4, characterized in that: It also includes a positioning component, which includes a pair of positioning plates with slots, each slot wall of the positioning plates has an outward-turned installation edge, the two positioning plates are relatively clamped on the rectangular section, and the installation edges of the two positioning plates are fixedly connected by bolts.

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