Slurry overflow prevention deep mixing pile drill bit for multi-point distributed grouting

Abstract

The utility model provides a multi-point distributed grouting anti-overflow deep mixing pile drill bit, which belongs to the technical field of deep mixing pile drill bits and structurally comprises a drill rod, a drill bit is communicated with the bottom surface of the drill rod, and two multi-point grouting pipe groups are transversely communicated with the left side and the right side of the lower end of the drill bit. A plurality of downward-pressing stirring blades are transversely arranged on the left side and the right side of the upper end of the drill bit, the drill rod body is sleeved with a grout-overflow-preventing cover plate set, and the grout-overflow-preventing deep stirring pile drill bit for multipoint distributed grouting is formed. The downward-pressing stirring blades are used for stirring and pressing the primary slurry to reduce upward surging of the primary slurry, in addition, the anti-slurry-overflowing cover plate set is used for pressing and covering the opening edge of the deep pile when rotary grouting reaches the top of the deep pile and preventing the primary slurry from overflowing, and the situation that the primary slurry flows all around and pollutes the environment is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-overflowing slurry deep mixing pile drill bits of multi-point distributed grouting, belong to deep mixing pile drill bit technical field. BACKGROUND

[0002] At present, the existing deep mixing method is mainly constructed by using deep mixer, using cement, lime and other materials as solidifying agent, and using low-pressure slurry pump to pump solidified slurry to the ground deep, and directly mixing soft soil and solidifying agent by stirring blade to form high-strength reinforced body.

[0003] The existing deep mixing pile drill bit, when in use, because the mixing pile drill bit will adopt rotary mixing grouting, the original slurry is easy to overflow, which can cause the original slurry to flow everywhere, and there is a problem of waste of original slurry and pollution of the environment, the utility model provides a kind of anti-overflowing slurry deep mixing pile drill bit of multi-point distributed grouting. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model aims to provide an anti-overflowing slurry deep mixing pile drill bit of multi-point distributed grouting to solve the existing problems.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: an anti-overflowing slurry deep mixing pile drill bit of multi-point distributed grouting, which comprises a drill rod, and the drill rod bottom surface is connected with a drill bit, and two multi-point grouting pipe groups are horizontally connected on the left and right sides of the lower end of the drill bit, a plurality of downward stirring paddles are horizontally arranged on the left and right sides of the upper end of the drill bit, and an anti-overflowing slurry cover plate group is sleeved on the drill rod body.

[0006] The anti-overflowing slurry cover plate group comprises a rotating seat group, and a first extender and a second extender are vertically arranged on the left and right sides of the rotating seat group, a pressure cover plate group is horizontally connected between the first extender and the second extender, the rotating seat group is fixedly sleeved on the drill rod body, and the pressure cover plate group is movably sleeved on the drill rod body.

[0007] Further improvement is that each multi-point grouting pipe group comprises a grouting horizontal pipe, a plurality of grouting ports are spaced apart and connected on the bottom surface of the grouting horizontal pipe, a resistance-preventing triangular cross section is formed on the front side of the grouting horizontal pipe, a side stirring head is arranged on the right side of the tail of the grouting horizontal pipe, and the side stirring head is triangular.

[0008] Further improvement is that the rotating seat group comprises an annular fixed seat, a bearing lower sleeve groove is formed on the top surface of the annular fixed seat, a bearing is embedded in the bearing lower sleeve groove, and a horizontal frame is embedded on the upper end of the bearing.

[0009] A first through hole is formed in the middle of the horizontal frame, and a bearing upper sleeve groove is formed on the bottom surface of the first through hole.

[0010] Further improvement is that the cover plate set comprises a cover plate body, a second through hole is formed in the middle of the top surface of the cover plate body, and a rotary sealing ring nest groove is formed in the middle of the hole wall of the second through hole.

[0011] Further improvement is that the drill rod, drill bit and grouting cross pipe are all middle structures, and the drill rod, drill bit and grouting cross pipe are connected with each other.

[0012] Further improvement is that the drill rod has a plurality of drill rods, and an anti-overflow cover plate set is additionally arranged on the uppermost end drill rod.

[0013] Further improvement is that the upper end of the drill rod is connected with a rotary driving end.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model provides a kind of anti-overflow deep mixing pile drill bit of multi-point distributed grouting, through the structural combination design of drill rod, drill bit, multi-point grouting pipe group, lower stirring paddle, anti-overflow cover plate set, it constitutes a kind of anti-overflow deep mixing pile drill bit of multi-point distributed grouting, and the multi-point grouting pipe group has multi-point distributed grouting function, so that grouting to deep pile is more uniform, and lower stirring paddle acts on the stirring lower pressure of original slurry, reduces the upward surge of original slurry, and the anti-resistance triangular section design on grouting cross pipe reduces the resistance when rotating grouting, and the design of side stirring head has the function of uniform stirring of original slurry in the cavity side of deep pile, in addition, anti-overflow cover plate set acts on the pressure cover of the rotation grouting to reach deep pile top, prevents the function of original slurry overflow, effectively reduces the pollution of environment of original slurry cross flow. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a kind of anti-overflow deep mixing pile drill bit of multi-point distributed grouting structure schematic view of the utility model;

[0017] Figure 2 It is multi-point grouting pipe group structure schematic view of the utility model;

[0018] Figure 3 It is anti-overflow cover plate set structure schematic view of the utility model;

[0019] Figure 4 It is rotary seat group structure schematic view of the utility model;

[0020] Figure 5 It is cover plate set structure schematic view of the utility model. DETAILED DESCRIPTION

[0021] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0022] Please refer to Figures 1-5 The utility model discloses a kind of multi-point distributed grouting's anti-overflow slurry deep mixing pile drill bit technical scheme: its structure includes drill rod 1, and drill rod 1 bottom surface is connectedly provided with drill bit 2, and two multi-point grouting pipes 3 are transversely connected in the left and right sides of the lower end of drill bit 2, a plurality of lower pressure stirring paddles 4 are transversely provided in the left and right sides of the upper end of drill bit 2, anti-overflow slurry cover plate set 5 is sleeved on the rod body of drill rod 1, and anti-overflow slurry cover plate set 5 includes rotating seat set 51, and first telescopic device 52 and second telescopic device 53 are vertically provided in the left and right sides of rotating seat set 51, and the bottom surface of first telescopic device 52 and second telescopic device 53 is horizontally connected with pressure cover plate set 54, rotating seat set 51 is fixedly sleeved on the rod body of drill rod 1, and pressure cover plate set 54 is movably sleeved on the rod body of drill rod 1 with softness.

[0023] Each of the multi-point grouting pipe set 3 includes grouting horizontal pipe 31, and a plurality of grouting ports 32 are spaced apart and distributed on the bottom surface of grouting horizontal pipe 31, and anti-resistance triangular cross section 33 is formed in the front side of grouting horizontal pipe 31, and side stirring head 34 is arranged at the tail of the right side of grouting horizontal pipe 31, and side stirring head 34 is in triangular shape.

[0024] Rotating seat set 51 includes annular fixed seat 511, and bearing lower sleeve groove 512 is formed in the top surface of annular fixed seat 511, and bearing 513 is embedded in bearing lower sleeve groove 512, horizontal frame 514 is embedded on the upper end of bearing 513, first through hole 515 is formed in the middle of horizontal frame 514, and bearing upper sleeve groove 516 is formed in the bottom surface of first through hole 515.

[0025] Pressure cover plate set 54 includes pressure cover plate body 541, and second through hole 542 is formed in the middle of the top surface of pressure cover plate body 541, and rotating sealing ring sleeve groove 543 is formed in the middle of the wall of second through hole 542, and rotating sealing ring 544 is embedded in rotating sealing ring sleeve groove 543, and rotating sealing ring 544 is movably and abutted with the rod body of drill rod 1 with softness.

[0026] Working principle:

[0027] In use, multiple drill rods 1 and drill bits 2 are first connected and then lowered vertically to the bottom of the deep pile cavity. Then, the rotating drive end drives the drill rods 1, drill bits 2, multi-point grouting pipe group 3, and downward mixing blades 4 to rotate and perform grouting. The raw grout flows into the multi-point distributed grouting ports 32 through the connection between the drill rods 1, drill bits 2, and grouting horizontal pipe 31. During this process, the anti-resistance triangular section 33 reduces the resistance when the grouting horizontal pipe 31 rotates, while the side mixing head 34 uniformly mixes the raw grout on the side of the deep pile cavity. The downward mixing blades 4 have a mixing and downward pressing effect on the raw grout, reducing the upward surge of the raw grout.

[0028] When grouting reaches the top of the deep pile cavity, the drill rod 1 with the anti-overflow cover plate assembly 5 is connected to the drill bit 2. Then, the first expansion joint 52 and the second expansion joint 53 on the anti-overflow cover plate assembly 5 are lowered, so that the pressure plate assembly 54 slides down against the drill rod 1 and presses down on the edge of the deep pile to prevent grout overflow. This prevents the original grout from overflowing and flowing around due to stirring when grouting reaches the edge area of ​​the deep pile cavity.

[0029] It should be noted that when the drill rod 1 rotates, the annular fixed seat 511 will rotate along with the bearing 513, while the cross frame 514 will not. In addition, under the action of the rotating sealing ring groove 543, the pressure plate body 541 can stably press and cover the edge of the deep pile and will not rotate along with it.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-point distributed grouting anti-overflow slurry deep mixing pile bit, characterized in that: Its structure includes a drill rod (1), and a drill bit (2) is connected to the bottom surface of the drill rod (1). Two multi-point grouting pipe groups (3) are connected to the left and right sides of the lower end of the drill bit (2). Multiple downward stirring blades (4) are connected to the left and right sides of the upper end of the drill bit (2). An anti-overflow grouting cover plate group (5) is sleeved on the body of the drill rod (1). The anti-overflow slurry cover plate assembly (5) includes a rotating seat assembly (51), and a first expansion joint (52) and a second expansion joint (53) are vertically arranged on the left and right sides of the rotating seat assembly (51). A pressure plate assembly (54) is horizontally connected between the bottom surfaces of the first expansion joint (52) and the second expansion joint (53). The rotating seat assembly (51) is fixedly fitted onto the drill rod (1) body, and the pressure plate assembly (54) is flexibly fitted onto the drill rod (1) body.

2. A multi-point distributed grouting anti-overflow slurry depth mixing pile bit according to claim 1, characterized in that: Each of the multi-point grouting pipe groups (3) includes a grouting horizontal pipe (31), and the bottom surface of the grouting horizontal pipe (31) is connected with multiple grouting ports (32) at intervals. The front side of the grouting horizontal pipe (31) is provided with a resistance-resistant triangular section (33). The right tail of the grouting horizontal pipe (31) is provided with a side mixing head (34), which is triangular in shape.

3. A multi-point distributed grouting anti-overflow depth mixing pile bit according to claim 2, characterized in that: The rotating seat assembly (51) includes an annular fixed seat (511), and the top surface of the annular fixed seat (511) is provided with a bearing lower sleeve groove (512), and a bearing (513) is embedded in the bearing lower sleeve groove (512), and a cross frame (514) is embedded at the upper end of the bearing (513). The cross frame (514) has a first through opening (515) in the middle, and a bearing upper sleeve groove (516) is provided on the bottom side of the first through opening (515).

4. A multi-point distributed grouting anti-overflow depth mixing pile bit according to claim 3, characterized in that: The pressure plate assembly (54) includes a pressure plate body (541), and a second opening (542) is provided through the middle of the top surface of the pressure plate body (541), and a rotating sealing ring groove (543) is provided in the middle of the opening wall of the second opening (542). A rotating sealing ring (544) is embedded in the groove (543) to resist the soft sealing movement of the drill rod (1).

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