A device for preventing the plugging of a cement mixing pile jetting port

Abstract

The utility model discloses a prevent cement mixing pile spouts plugging device relates to cement mixing pile technical field, including positioning frame, the bottom of positioning frame is provided with the outer drill cylinder, still include: prevent blocking subassembly, prevent blocking subassembly including fixedly connected with the bearing station of outer drill cylinder bottom, the outer surface fixedly connected with spring of bearing station, the one end fixedly connected with the closing plate of spring away from bearing station, is seted up spouts on the outer drill cylinder, this device can when the outer drill cylinder is not grouting rotary drilling into silt, by spring cooperation bearing station to the support of closing plate, make closing plate carry out the plugging of spouts, still can when the outer drill cylinder grouting, utilize the impact of cement paste, make spring force and contract, make closing plate separate the plugging of spouts, by spouts and cement paste spouts, can effectively prevent silt and block spouts.

Description

Technical Field

[0001] This utility model relates to the field of cement mixing pile technology, specifically to a device for preventing clogging of the grouting nozzle of cement mixing piles. Background Technology

[0002] Cement mixing pile construction can improve soft soil foundation. The construction process is as follows: First, prepare cement slurry binder with a mixer, then drill holes into the soft soil foundation with a drill rod. After the drill rod reaches the design depth, the cement slurry is filled into the hole through the hose and drill rod by a pressurization device. The drill rod rises while filling the cement slurry and rotating and stirring to mix the cement slurry binder with the cement.

[0003] Currently, a common problem encountered in cement mixing pile construction is that during the drilling process, the silt around the drill rod is squeezed and enters the drill rod through the grouting hole. This not only causes the grouting hole to be blocked, making subsequent grouting impossible, but also causes the silt to mix with the cement slurry, reducing the strength of the cement.

[0004] Therefore, in view of this, the present invention proposes a device to prevent clogging of the grouting nozzle of cement mixing piles in order to make up for and improve the deficiencies of the prior art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a device for preventing clogging of the grouting nozzle of cement mixing piles, including a positioning frame, an outer drilling cylinder at the bottom end of the positioning frame, and further comprising:

[0006] The anti-clogging component includes a support platform fixedly connected to the bottom end of the outer drill barrel, a spring fixedly connected to the outer surface of the support platform, a sealing plate fixedly connected to the end of the spring away from the support platform, and a spray hole opened on the outer drill barrel.

[0007] When the sealing plate is not subjected to external force, the spring supports the sealing plate to block the grouting hole. When the sealing plate is impacted by cement, the spring is compressed and contracts to release the seal on the grouting hole.

[0008] Preferably, the anti-clogging component also includes a grouting pipe connected to the outer drill barrel, and the grouting pipe is located above the sealing plate.

[0009] Preferably, an anti-slurry spillage component is provided between the positioning frame and the outer drill barrel. The anti-slurry spillage component includes a motor fixedly installed on the positioning frame, an inner drill rod fixedly connected to the output end of the motor, and a drill tip fixedly connected to the end of the inner drill rod away from the motor.

[0010] Preferably, the anti-slurry spillage assembly also includes a semi-toothed platform rotatably connected to the positioning frame, a semi-toothed disc fixedly connected to the center of the semi-toothed platform, and a gear column rotatably connected to the semi-toothed platform.

[0011] Preferably, the anti-slurry component also includes a gear ring rotatably connected to the bottom of the positioning frame, and the gear ring meshes with the gear post.

[0012] Preferably, the anti-slurry spillage assembly also includes an outer cutting edge fixedly connected to the outer surface of the outer drill barrel, and an inner cutting edge fixedly connected to the outer surface of the drill tip.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model, through the setting of anti-clogging components, can block the grouting hole by using the spring and the support platform to support the sealing plate when the outer drill barrel is rotating and drilling into the silt without grouting. It can also block the grouting hole by using the impact of cement grout when the outer drill barrel is grouting. It can also block the grouting hole by using the impact of cement grout to compress the spring and release the sealing plate from the grouting hole, so that the cement grout can be sprayed out through the grouting hole. This can effectively prevent the silt from blocking the grouting hole.

[0015] This invention, through its anti-grout leakage component, utilizes the continuous rotation of the inner drill rod carrying the inner blade, positioning the gear column between the half-tooth platform and the half-tooth disc. Repeated clockwise and counterclockwise rotation causes the outer drill cylinder to rotate along with the gear ring, resulting in more uniform mixing between the outer and inner blades. Furthermore, the shear force generated by the blade mixing is offset and weakened, reducing disturbance to the surrounding soil. This not only prevents excessive disturbance and grout leakage but also reduces siltation near the grouting hole. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 As shown in this utility model Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This is a schematic diagram of the connection structure between the semi-tooth disk and the gear column shown in this utility model.

[0020] The numbers on the map are:

[0021] 1. Positioning frame; 2. Outer drill barrel; 3. Anti-clogging component; 31. Grouting pipe; 32. Support platform; 33. Spring; 34. Sealing plate; 35. Grouting hole; 4. Anti-grouting component; 41. Motor; 42. Inner drill rod; 43. Half-tooth platform; 44. Half-tooth disc; 45. Gear column; 46. Gear ring; 47. Outer cutting edge; 48. Drill tip; 49. Inner cutting edge. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Embodiments of this utility model

[0024] Please refer to Figures 1 to 4 As shown, a device for preventing clogging of the grouting nozzle of a cement mixing pile includes a positioning frame 1, an outer drilling cylinder 2 at the bottom end of the positioning frame 1, and further includes:

[0025] The anti-blocking component 3 includes a support platform 32 fixedly connected to the bottom end of the outer drill cylinder 2. A spring 33 is fixedly connected to the outer surface of the support platform 32. A sealing plate 34 is fixedly connected to the end of the spring 33 away from the support platform 32. The spring 33 is in an extended state and is used to support the sealing plate 34 and the grouting hole 35 to be on the same plane. A grouting hole 35 is opened on the outer drill cylinder 2. The thickness of the sealing plate 34 is greater than the diameter of the grouting hole 35. Multiple grouting holes 35 are provided and the multiple grouting holes 35 are arranged in a circumferential array on the outer drill cylinder 2 to discharge the cement slurry that enters the inner cavity of the outer drill cylinder 2.

[0026] When the sealing plate 34 is not subjected to external force, the spring 33 supports the sealing plate 34 to block the spray hole 35. When the sealing plate 34 is impacted by cement, it compresses the spring 33 to contract and release the seal on the spray hole 35.

[0027] The anti-blocking component 3 also includes a grouting pipe 31 connected to the outer drill barrel 2. The end of the grouting pipe 31 away from the outer drill barrel 2 is connected to a grouting pump for injecting external cement slurry into the sealing plate 34, and the grouting pipe 31 is located above the sealing plate 34.

[0028] The above solution is adopted: by setting the anti-blocking component 3, when the outer drill barrel 2 is rotating and drilling into the silt without grouting, the spring 33 and the bearing platform 32 support the sealing plate 34, so that the sealing plate 34 blocks the grouting hole 35. When the outer drill barrel 2 is grouting, the impact of the cement slurry will cause the spring 33 to be stressed and contracted, so that the sealing plate 34 will be released from the blockage of the grouting hole 35, and the cement slurry will be sprayed out through the grouting hole 35, which can effectively prevent the silt from blocking the grouting hole 35.

[0029] Please refer to Figures 2 to 4As shown, an anti-slurry spillage component 4 is provided between the positioning frame 1 and the outer drill barrel 2. The anti-slurry spillage component 4 includes a motor 41 fixedly installed on the positioning frame 1. The output end of the motor 41 is fixedly connected to an inner drill rod 42. The end of the inner drill rod 42 away from the motor 41 is fixedly connected to a drill tip 48. The drill tip 48 can follow the rotation of the inner drill rod 42 and break up the hard material that comes into contact with during the drilling process.

[0030] The anti-slurry spillage component 4 also includes a semi-toothed platform 43 rotatably connected to the positioning frame 1, a semi-toothed disc 44 fixedly connected to the center of the semi-toothed platform 43, and a gear column 45 rotatably connected to the semi-toothed platform 43; the anti-slurry spillage component 4 also includes a gear ring 46 rotatably connected to the bottom end of the positioning frame 1, and the gear ring 46 meshes with the gear column 45. The cooperation between the semi-toothed platform 43 and the semi-toothed disc 44 enables the gear column 45 to be located between the semi-toothed platform 43 and the semi-toothed disc 44, and to rotate clockwise and counterclockwise repeatedly, thereby driving the gear ring 46 to carry the outer drill barrel 2 to rotate accordingly;

[0031] The anti-grouting component 4 also includes an outer blade 47 fixedly connected to the outer surface of the outer drill barrel 2, and an inner blade 49 fixedly connected to the outer surface of the drill tip 48. The inner blade 49 rotates continuously with the inner drill rod 42, while the outer blade 47 rotates clockwise and counterclockwise with the outer drill barrel 2, so that the outer blade 47 and the inner blade 49 cooperate to make the mixing more uniform. Moreover, the shear force generated by the blade mixing is offset and weakened, which can reduce the disturbance to the surrounding soil.

[0032] The above scheme is adopted: by setting the anti-grouting component 4, the inner drill rod 42 can carry the inner blade 49 to rotate continuously, so that the gear column 45 is located between the half-tooth platform 43 and the half-tooth disc 44, and rotates clockwise and counterclockwise repeatedly. In this way, the outer drill cylinder 2 is carried to rotate through the gear ring 46, so that the outer blade 47 and the inner blade 49 are mixed more evenly. Moreover, the shear force generated by the blade mixing is offset and weakened, which can reduce the disturbance to the surrounding soil. This not only prevents excessive disturbance from causing grouting, but also reduces the silt near the grouting hole 35.

[0033] Working principle and usage process of this utility model:

[0034] The operator first remotely starts the motor 41, causing the inner drill rod 42, carrying the drill tip 48 and inner cutting edge 49, to rotate continuously. At the same time, the inner drill rod 42, carrying the half-tooth platform 43, rotates on the positioning frame 1. With the circumferential rotation of the half-tooth platform 43 and the half-tooth disc 44, the gear column 45 intermittently meshes with the half-tooth platform 43 and the half-tooth disc 44, thus positioning the gear column 45 between the half-tooth platform 43 and the half-tooth disc 44. This repeated clockwise and counterclockwise rotation causes the gear ring 46 to rotate along with the outer drill cylinder 2, making the outer cutting edge 47 and the inner cutting edge 49 mix more evenly. Moreover, the shearing force generated by the blade mixing is offset and weakened, which can reduce the disturbance to the surrounding soil. When grouting is required, cement grout is injected into the outer drill cylinder 2 through the grouting pipe 31. The cement grout presses against the sealing plate 34, causing the spring 33 to contract and avoid it. At this time, the sealing plate 34 is released from the seal of the grouting hole 35, and the cement grout is sprayed out through the grouting hole 35.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing clogging of the grouting nozzle of a cement mixing pile, comprising a positioning frame (1), wherein an outer drill cylinder (2) is provided at the bottom end of the positioning frame (1), characterized in that, It also includes: The anti-blocking component (3) includes a support platform (32) fixedly connected to the bottom end of the outer drill barrel (2), a spring (33) fixedly connected to the outer surface of the support platform (32), a sealing plate (34) fixedly connected to the end of the spring (33) away from the support platform (32), and a spraying hole (35) opened on the outer drill barrel (2). When the sealing plate (34) is not subjected to external force, the spring (33) supports the sealing plate (34) to block the grouting hole (35). When the sealing plate (34) is subjected to cement impact, the spring (33) is squeezed to contract and release the blockage of the grouting hole (35).

2. The device for preventing clogging of the grouting nozzle in cement mixing piles according to claim 1, characterized in that, The anti-blocking component (3) also includes a grouting pipe (31) connected to the outer drill barrel (2), and the grouting pipe (31) is located above the sealing plate (34).

3. The device for preventing clogging of the grouting nozzle in cement mixing piles according to claim 1, characterized in that, An anti-slurry spillage component (4) is provided between the positioning frame (1) and the outer drill barrel (2). The anti-slurry spillage component (4) includes a motor (41) fixedly installed on the positioning frame (1). An inner drill rod (42) is fixedly connected to the output end of the motor (41). A drill tip (48) is fixedly connected to the end of the inner drill rod (42) away from the motor (41).

4. The device for preventing clogging of the grouting nozzle in cement mixing piles according to claim 3, characterized in that, The anti-slurry component (4) also includes a semi-tooth platform (43) rotatably connected to the positioning frame (1), a semi-tooth disc (44) is fixedly connected to the center of the semi-tooth platform (43), and a gear column (45) is rotatably connected to the semi-tooth platform (43).

5. The device for preventing clogging of the grouting nozzle in cement mixing piles according to claim 4, characterized in that, The anti-slurry component (4) also includes a gear ring (46) rotatably connected to the bottom of the positioning frame (1), and the gear ring (46) meshes with the gear column (45).

6. The device for preventing clogging of the grouting nozzle in cement mixing piles according to claim 3, characterized in that, The anti-slurry component (4) also includes an outer cutting edge (47) fixedly connected to the outer surface of the outer drill barrel (2), and an inner cutting edge (49) fixedly connected to the outer surface of the drill tip (48).

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