Cast-in-place pile pore-forming slurry circulating device

Abstract

The utility model discloses a cast-in-place pile pore-forming slurry circulating device, and relates to the technical field of cast-in-place pile construction. The cast-in-place pile pore-forming slurry circulating device comprises a flow guide cover installed on the upper side of a pile casing, a sedimentation tank, a slurry tank and a suction pump. The flow guide cover is in a big-end-up flaring shape, one side edge of the flow guide cover is provided with a laterally-inclined overflow nozzle, the sedimentation tank and the mud tank are arranged on the ground, the overflow nozzle of the flow guide cover faces the sedimentation tank, the sedimentation tank is communicated with the mud tank through a communicating groove, the communicating groove is formed in the upper portion between the sedimentation tank and the mud tank, and the mud tank is communicated with the sedimentation tank. And the suction pump is arranged in the mud pit. Through the arrangement of the flow guide cover, slurry overflowing from the pile casing is collected, and the slurry is guided into the sedimentation tank through the overflow nozzle of the flow guide cover, so that the suction mode of an existing suction pump is avoided, and the cost is saved. Due to the uniform arrangement of the plurality of communicating grooves, the upper layer of the mud subjected to sedimentation treatment can uniformly flow into the mud pool.

Description

Technical Field

[0001] The utility model relates to the technical field of cast-in-place pile construction, in particular to a cast-in-place pile hole-forming mud circulation device. Background Art

[0002] A bored pile is a pile made by drilling a hole in place and pouring concrete or reinforced concrete. Commonly used bored piles are made by drilling a hole in place and pouring concrete using a screw drill, a submersible drill, etc.

[0003] The construction process requires burying casing at the construction location. The function of the casing is to prevent surface water or some impurities from entering the borehole and affecting the formation of the bored pile. Then, drilling is carried out downward inside the casing to form a hole. The steel cage is lowered into the hole in turn, and a pouring conduit is inserted into the inner side of the steel cage. The pouring conduit is formed by a combination of fixed-length pipes connected in sections, and concrete is injected into the lower side of the pouring conduit inside the lower side of the steel cage.

[0004] In the process of drilling holes in sandy soil, the prepared mud should be injected for drilling. The mud circulation is used to remove the soil debris under the drilling. After drilling to the required depth, the hole should be cleaned to remove the soil debris at the bottom of the hole and reduce the settlement of the pile.

[0005] The mud is usually reused, the hole is cleaned by circulating the mud, and the mud is filtered to ensure the quality of the mud. After the mud is injected into the borehole, the mud overflows from the upper end of the casing, and it is not easy to gather the mud and enter the circulation stage. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a bored pile hole forming mud circulation device, which solves the above-mentioned problem that it is not easy to gather the overflowed mud.

[0008] (II) Technical solution

[0009] To achieve the above purpose, the utility model is implemented through the following technical solutions: a bored pile hole slurry circulation device, comprising:

[0010] A flow guide cover installed on the upper side of the casing, the flow guide cover is in an expanded shape with a larger upper portion and a smaller lower portion, and a side edge of the flow guide cover is provided with a tilted overflow nozzle;

[0011] A sedimentation tank and a mud pool, wherein the sedimentation tank and the mud pool are arranged on the ground, the overflow nozzle of the guide cover faces the sedimentation tank, the sedimentation tank and the mud pool are connected through a connecting groove, and the connecting groove is arranged at the upper part between the sedimentation tank and the mud pool;

[0012] A suction pump is arranged in the mud pool, and a circulation output pipe is connected to the liquid outlet of the suction pump.

[0013] Preferably, a plurality of the connecting grooves are provided, and the plurality of connecting grooves are evenly opened at the upper part between the sedimentation tank and the mud tank.

[0014] Preferably, a primary filter screen is longitudinally inserted on one side of the sedimentation tank close to the connecting groove.

[0015] Preferably, a guide slot is provided on the side of the sedimentation tank, and the guide slot is located directly below the overflow nozzle of the guide cover.

[0016] Preferably, a supporting protrusion is provided on the upper side of the interior of the mud pool, a secondary filter screen plate supported on the upper side of the supporting protrusion is provided on the interior of the mud pool, and the circulation output pipe passes through the secondary filter screen plate.

[0017] Preferably, a scraper bar is provided on the upper inner side of the mud pool, a rubber scraper is provided at one end of the scraper bar, the rubber scraper is located at one end of the scraper bar close to the circulation output pipe, and a driving mechanism for driving the scraper bar is provided in the mud pool.

[0018] Preferably, the driving mechanism includes a threaded ring arranged on the lower surface of the scraper strip, a screw rod is connected to the inner thread of the threaded ring, a driving motor is installed on one side of the interior of the mud pool, the output shaft of the driving motor is connected to one end of the screw rod, the driving motor is a waterproof motor, a support bar is connected to the interior of the mud pool, and the scraper strip is slidably supported on the support bar.

[0019] (III) Beneficial effects

[0020] The utility model provides a bored pile hole slurry circulation device, which has at least the following beneficial effects compared with the prior art:

[0021] By setting the guide cover, the mud overflowing from the casing is collected, and the mud is guided into the sedimentation tank through the overflow nozzle of the guide cover, avoiding the existing suction pump suction method and saving costs.

[0022] The multiple connecting grooves are evenly arranged so that the upper layer of the mud after sedimentation treatment can flow evenly into the mud pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model after removing the secondary filter screen plate;

[0025] Figure 3 It is a schematic diagram of the structure of the scraper bar, rubber scraper, threaded ring, screw rod, drive motor and support bar of the utility model.

[0026] In the figure: 1. casing; 2. deflector; 3. guide notch; 4. sedimentation tank; 5. mud tank; 6. connecting groove; 7. primary filter screen; 8. suction pump; 9. circulation output pipe; 10. supporting protrusion; 11. secondary filter screen; 12. scraper; 13. rubber scraper; 14. threaded ring; 15. screw; 16. drive motor; 17. support bar. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1:

[0029] See also Figure 1-3 The utility model provides a technical solution: a bored pile drilling mud circulation device, comprising: a guide cover 2 installed on the upper side of a casing 1, a sedimentation tank 4, a mud pool 5, and a suction pump 8;

[0030] The deflector 2 is in a flared shape with a larger upper portion and a smaller lower portion, and a tilted overflow nozzle is provided on one side of the deflector 2. The sedimentation tank 4 and the mud tank 5 are arranged on the ground, and the overflow nozzle of the deflector 2 faces the sedimentation tank 4. The sedimentation tank 4 and the mud tank 5 are connected through a connecting groove 6, and the connecting groove 6 is arranged at the upper part between the sedimentation tank 4 and the mud tank 5. The suction pump 8 is arranged in the mud tank 5, and a circulation output pipe 9 is connected to the liquid outlet of the suction pump 8.

[0031] Analysis of the above content: When in use, the outlet of the circulation output pipe 9 is connected to the drill pipe (the drill pipe is hollow and is used to transport mud. It is a prior art and will not be described in detail here). The circulation output pipe 9 outputs the mud into the drill pipe and outputs it from the bottom end of the drill pipe to empty the inside of the borehole. The mud in the borehole carries the soil debris that needs to be cleaned up from the periphery of the drill pipe and overflows from the guide cover 2 at the upper end of the casing 1. The overflowed mud enters the sedimentation tank 4. In the sedimentation tank 4, the soil debris in the mud settles. The mud enters the mud pool 5 and is refluxed and circulated under the suction action of the suction pump 8.

[0032] Embodiment 2:

[0033] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: a plurality of the connecting grooves 6 are provided, and the plurality of connecting grooves 6 are evenly opened at the upper part between the sedimentation tank 4 and the mud tank 5 .

[0034] Analysis of the above content: Through the provision of multiple connecting grooves 6, the upper layer of settled mud is evenly dispersed from the multiple connecting grooves 6 into the mud pool 5.

[0035] Embodiment three:

[0036] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: a primary filter screen plate 7 is longitudinally inserted on one side of the sedimentation tank 4 close to the connecting groove 6 .

[0037] Analysis of the above content: The setting of the primary filter screen plate 7 prevents the soil debris settled in the sedimentation tank 4 from floating into the mud tank 5.

[0038] Embodiment 4:

[0039] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: a guide slot 3 is provided on the side of the sedimentation tank 4 , and the guide slot 3 is located directly below the overflow nozzle of the guide cover 2 .

[0040] Analysis of the above contents: The setting of the guide slot 3 is to receive and guide the mud falling from the overflow nozzle just below the deflector 2.

[0041] Embodiment 4:

[0042] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: a support protrusion 10 is provided on the upper side of the interior of the mud pool 5, a secondary filter screen plate 11 supported on the upper side of the support protrusion 10 is provided on the interior of the mud pool 5, and the circulation output pipe 9 passes through the secondary filter screen plate 11. A scraper bar 12 is provided on the upper side of the interior of the mud pool 5, a rubber scraper 13 is provided at one end of the scraper bar 12, and the rubber scraper 13 is located at one end of the scraper bar 12 close to the circulation output pipe 9, and a driving mechanism for driving the scraper bar 12 is provided in the mud pool 5. The driving mechanism includes a threaded ring 14 provided on the lower surface of the scraper bar 12, and a screw 15 is connected to the inner thread of the threaded ring 14. A driving motor 16 is installed on one side of the interior of the mud pool 5, and the output shaft of the driving motor 16 is connected to one end of the screw 15. The driving motor 16 is a waterproof motor. A support bar 17 is connected to the interior of the mud pool 5, and the scraper bar 12 is slidably supported on the support bar 17.

[0043] Analysis of the above content: The supporting protrusion 10 supports the secondary filter screen plate 11. Since the construction environment is relatively poor, the secondary filter screen plate 11 is provided to isolate objects falling from the upper side.

[0044] In this way, the suction pump 8 sucks the mud on the lower side of the secondary filter screen plate 11 to ensure the quality of the output mud.

[0045] The screw 15 is driven to rotate by the driving motor 16, and the rotation of the screw 15 pushes the threaded ring 14, the scraper bar 12, and the rubber scraper 13 to move, so that the scraper bar 12 pushes the impurities on the secondary filter screen 11 to concentrate, and when the rubber scraper 13 contacts the circulation output pipe 9, the rubber scraper 13 bends and deforms, thereby scraping off the impurities and protecting the circulation output pipe 9 at the same time.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slurry circulation device for bored piles, characterized in that: include: A flow guide cover (2) is installed on the upper side of the casing (1), the flow guide cover (2) is in a flared shape with a larger top and a smaller bottom, and a side edge of the flow guide cover (2) is provided with a tilted overflow nozzle; A sedimentation tank (4) and a mud tank (5), wherein the sedimentation tank (4) and the mud tank (5) are arranged on the ground, the overflow nozzle of the guide cover (2) faces the sedimentation tank (4), the sedimentation tank (4) and the mud tank (5) are connected through a connecting groove (6), and the connecting groove (6) is arranged at the upper part between the sedimentation tank (4) and the mud tank (5); A suction pump (8), wherein the suction pump (8) is arranged in the mud pool (5), and a circulation output pipe (9) is connected to the liquid outlet of the suction pump (8).

2. A bored pile drilling mud circulation device according to claim 1, characterized in that: A plurality of the connecting grooves (6) are provided, and the plurality of connecting grooves (6) are evenly opened at the upper part between the sedimentation tank (4) and the mud tank (5).

3. A bored pile drilling mud circulation device according to claim 1, characterized in that: A primary filter screen plate (7) is longitudinally inserted into one side of the sedimentation tank (4) close to the connecting groove (6).

4. A bored pile drilling mud circulation device according to claim 1, characterized in that: A guide slot (3) is provided on the side of the sedimentation tank (4), and the guide slot (3) is located directly below the overflow nozzle of the guide cover (2).

5. The bored pile drilling mud circulation device according to claim 1, characterized in that: A supporting protrusion (10) is arranged on the upper side of the interior of the mud pool (5), a secondary filter screen plate (11) supported on the upper side of the supporting protrusion (10) is arranged on the interior of the mud pool (5), and the circulation output pipe (9) passes through the secondary filter screen plate (11).

6. A bored pile drilling mud circulation device according to claim 5, characterized in that: A scraper bar (12) is arranged on the upper inner side of the mud pool (5), a rubber scraper plate (13) is arranged at one end of the scraper bar (12), and the rubber scraper plate (13) is located at one end of the scraper bar (12) close to the circulation output pipe (9). A driving mechanism for driving the scraper bar (12) is arranged in the mud pool (5).

7. A bored pile drilling mud circulation device according to claim 6, characterized in that: The driving mechanism comprises a threaded ring (14) arranged on the lower surface of the scraper bar (12), the threaded ring (14) is internally threadedly connected to a screw rod (15), a driving motor (16) is installed on one side of the interior of the mud pool (5), the output shaft of the driving motor (16) is connected to one end of the screw rod (15), the driving motor (16) is a waterproof motor, a support bar (17) is connected to the interior of the mud pool (5), and the scraper bar (12) is slidably supported on the support bar (17).

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