A secondary cleaning system for cast-in-place piles

Abstract

This utility model discloses a secondary cleaning system for cast-in-place piles, designed to prevent blockage of the grouting conduit. It includes a pile hole, a sedimentation tank, a mud pump, a hydrocyclone, a filter, and a grouting conduit. The top of the pile hole has an overflow trough. A baffle extends upwards from the bottom of the sedimentation tank, dividing it into a sedimentation zone and a storage zone. The top of the baffle is lower than the top of the sedimentation tank. The overflow trough communicates with the sedimentation zone. The input end of the mud pump is connected to the storage zone, and the output end is connected to the inlet end of the hydrocyclone. The outlet end of the hydrocyclone is connected to the filter via a first pipe. The bottom of the hydrocyclone has a slag discharge port. The filter is connected to the top of the grouting conduit via a second pipe and is used to filter gravel from the mud. The grouting conduit extends to the bottom of the pile hole. This invention belongs to the field of cast-in-place pile technology.

Description

Technical Field

[0001] This utility model belongs to the field of cast-in-place pile technology, and more specifically, relates to a secondary hole cleaning system for cast-in-place piles. Background Technology

[0002] During the construction of cast-in-place piles, a large amount of sediment will appear in the pile hole. This sediment will settle at the bottom of the pile hole, which will hinder the construction of the cast-in-place pile and the quality of the cast-in-place pile. In actual construction, a hole cleaning system is generally used to perform a secondary hole cleaning operation on the pile hole of the cast-in-place pile to remove the sediment at the bottom of the pile hole.

[0003] The existing secondary cleaning system extracts mud from the sedimentation tank and injects it into the bottom of the pile hole through a grouting pipe. The mud, carrying sediment, flows back to the sedimentation tank, and this cycle continues until the sediment settles in the sedimentation tank. However, it is inevitable that some gravel will be discharged from the sedimentation tank along with the mud. The gravel can cause blockage of the grouting pipe, which often requires manual unblocking. Since the grouting pipe goes deep into the pile hole, unblocking is quite troublesome. Utility Model Content

[0004] The main purpose of this utility model is to provide a secondary cleaning system for cast-in-place piles, which aims to prevent blockage of the grouting conduit.

[0005] According to a first aspect of the present invention, a secondary cleaning system for cast-in-place piles is provided, comprising a pile hole, a sedimentation tank, a mud pump, a hydrocyclone, a filter, and a grouting conduit;

[0006] An overflow trough is provided at the top of the pile hole. A baffle extends upward from the bottom of the sedimentation tank, dividing the sedimentation tank into a sedimentation zone and a storage zone. The top of the baffle is lower than the top of the sedimentation tank. The overflow trough is connected to the sedimentation zone. The input end of the mud pump is connected to the storage zone, and the output end of the mud pump is connected to the inlet end of the hydrocyclone. The outlet end of the hydrocyclone is connected to the filter through a first pipe. A slag discharge port is provided at the bottom of the hydrocyclone. The filter is connected to the top of the injection conduit through a second pipe. The filter is used to filter gravel in the mud. The injection conduit extends to the bottom of the pile hole.

[0007] In the above-mentioned secondary cleaning system for cast-in-place piles, the filter includes a cylinder with a chamber. The top of the cylinder is provided with a first pipe and a second pipe. Both the first pipe and the second pipe are connected to the chamber. The first pipe is connected to the first pipeline, and the second pipe is connected to the second pipeline. A filter screen is provided in the second pipe.

[0008] In the above-mentioned secondary cleaning system for cast-in-place piles, the cylinder is lower than the liquid outlet end of the hydrocyclone, and the grouting conduit is lower than the cylinder.

[0009] In the above-mentioned secondary cleaning system for cast-in-place piles, both the first pipe and the second pipe are arranged at an angle.

[0010] In the above-mentioned secondary cleaning system for cast-in-place piles, the inner wall of the chamber is an annular slope that is narrower at the top and wider at the bottom.

[0011] In the above-mentioned secondary cleaning system for cast-in-place piles, the bottom of the cylinder is an open end, and a cover is detachably installed on the cylinder to seal the open end.

[0012] In the above-mentioned secondary cleaning system for cast-in-place piles, a sealing ring is provided on the cover, which is used to contact the cylinder to achieve a seal.

[0013] In the above-mentioned secondary cleaning system for cast-in-place piles, the mud pump is connected to the inlet end of the hydrocyclone via a connecting pipe.

[0014] In the above-mentioned secondary cleaning system for cast-in-place piles, the first pipe, the second pipe, and the connecting pipe are all rubber hoses.

[0015] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0016] In this invention, the mud pump output passes through a hydrocyclone, which removes the sediment carried in the mud from the discharge port. The mud is then output from the liquid outlet and then filtered twice to remove gravel from the mud, thereby preventing blockage of the injection conduit. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the first embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the filter according to the first embodiment of this utility model.

[0020] The figure labels for each figure are as follows:

[0021] 1. Pile hole; 2. Sedimentation tank; 21. Baffle; 22. Sedimentation zone; 23. Storage zone; 3. Mud pump; 4. Hydrocyclone; 5. Filter; 51. Cylinder; 52. Chamber; 53. First pipe; 54. Second pipe; 55. Filter screen; 56. Cover; 6. Injection conduit; 7. Overflow trough; 8. First pipeline; 9. Second pipeline; 10. Connecting pipe. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0024] Reference Figures 1 to 2 As shown, a secondary cleaning system for cast-in-place piles includes a pile hole 1, a sedimentation tank 2, a mud pump 3, a hydrocyclone 4, a filter 5, and a grouting conduit 6.

[0025] An overflow trough 7 is provided at the top of the pile hole 1. A baffle 21 extends upward from the bottom of the sedimentation tank 2, dividing the sedimentation tank 2 into a sedimentation zone 22 and a storage zone 23. The top of the baffle 21 is lower than the top of the sedimentation tank 2. The overflow trough 7 is connected to the sedimentation zone 22. The input end of the mud pump 3 is connected to the storage zone 23, and the output end of the mud pump 3 is connected to the liquid inlet of the hydrocyclone 4. The liquid outlet of the hydrocyclone 4 is connected to the filter 5 through the first pipe 8. The bottom of the hydrocyclone 4 is provided with a slag discharge port. The filter 5 is connected to the top of the injection conduit 6 through the second pipe 9. The filter 5 is used to filter gravel in the mud. The injection conduit 6 extends to the bottom of the pile hole 1.

[0026] The mud pump 3 draws mud from the storage area 23. The mud is input from the inlet end of the hydrocyclone 4. Under the action of the hydrocyclone 4, the sediment in the mud will be discharged from the slag discharge port, and the mud will be output through the outlet end of the hydrocyclone 4. It enters the filter 5 through the first pipe 8. The filter 5 performs secondary filtration to intercept the gravel. Then the mud is input from the second pipe 9 into the injection pipe 6. The injection pipe 6 inputs the mud to the bottom of the pile hole 1. From bottom to top, it flushes out the sediment at the bottom of the pile hole 1. It enters the sedimentation area 22 through the overflow trough 7. Under the action of gravity, the sediment will settle at the bottom of the sedimentation area 22, and the mud can flow into the storage area 23. In this way, the blockage of the injection pipe 6 can be prevented.

[0027] In this embodiment, the filter 5 includes a cylindrical body 51, the cylindrical body 51 has a chamber 52, the top of the cylindrical body 51 is provided with a first tube 53 and a second tube 54, both the first tube 53 and the second tube 54 are connected to the chamber 52, the first tube 53 is connected to the first pipe 8, the second tube 54 is connected to the second pipe 9, and a filter screen 55 is provided in the second tube 54.

[0028] The mud input through the first pipe 8 enters the chamber 52 through the first pipe body 53. If there are any stones, they will settle in the chamber 52. Then the mud is output from the second pipe body 54. If there are still stones, they will be intercepted by the filter screen 55 to ensure that the stones do not enter the infusion conduit 6.

[0029] In this embodiment, both the first tube 53 and the second tube 54 are arranged at an angle to facilitate the falling of gravel into the chamber 52.

[0030] In this embodiment, the inner wall of the chamber 52 is an annular slope that is narrow at the top and wide at the bottom. In this way, the gravel that falls into the chamber 52 is less likely to be impacted and flow back into the pipe, allowing the mud to flow more smoothly.

[0031] Preferably, the cylinder 51 can be designed as a frustum, and the interior of the cylinder 51 naturally forms an annular slope that is narrow at the top and wide at the bottom.

[0032] In this embodiment, the bottom of the cylinder 51 is an open end, and a cover 56 is detachably installed on the cylinder 51. The cover 56 is used to seal the open end so that the gravel and mud will not leak from the open end. When it is necessary to remove the gravel, the cover 56 can be opened.

[0033] Specifically, the cover 56 is connected to the cylinder 51 by bolts. The cover 56 is provided with a sealing ring, which is used to contact the bottom end face of the cylinder 51. By means of bolts, the cover 56 can be pressed against the bottom end face of the cylinder 51, thereby squeezing the sealing ring and achieving a seal. When the cover 56 needs to be removed, the bolts can be unscrewed.

[0034] In some other embodiments, one side of the cover 56 is hinged to the cylinder 51, and the other side of the cover 56 is connected to the cylinder 51 by a latch. When locked, the cover 56 can be pressed against the bottom end face of the cylinder 51. When unlocked, the cover 56 can be rotated to expose the open end.

[0035] In this embodiment, the first tube 53 and the second tube 54 are fixed to the cylinder 51 by welding.

[0036] In this embodiment, the mud pump 3 is connected to the inlet end of the hydrocyclone 4 through the connecting pipe 10. The first pipe 8, the second pipe 9 and the connecting pipe 10 are all rubber hoses, which are easy to connect and not easy to get blocked. Even if they are blocked, they are easy to clear since these pipes are exposed.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A secondary borehole cleaning system for cast-in-place piles, characterized in that, This includes pile holes, sedimentation tanks, mud pumps, hydrocyclones, filters, and injection pipes; An overflow trough is provided at the top of the pile hole. A baffle extends upward from the bottom of the sedimentation tank, dividing the sedimentation tank into a sedimentation zone and a storage zone. The top of the baffle is lower than the top of the sedimentation tank. The overflow trough is connected to the sedimentation zone. The input end of the mud pump is connected to the storage zone, and the output end of the mud pump is connected to the inlet end of the hydrocyclone. The outlet end of the hydrocyclone is connected to the filter through a first pipe. A slag discharge port is provided at the bottom of the hydrocyclone. The filter is connected to the top of the injection conduit through a second pipe. The filter is used to filter gravel in the mud. The injection conduit extends to the bottom of the pile hole.

2. The secondary cleaning system for cast-in-place piles according to claim 1, characterized in that, The filter includes a cylindrical body with a chamber. A first tube and a second tube are provided at the top of the cylindrical body. Both the first tube and the second tube are connected to the chamber. The first tube is connected to the first pipe, and the second tube is connected to the second pipe. A filter screen is provided in the second tube.

3. The secondary borehole cleaning system for cast-in-place piles according to claim 2, characterized in that, The cylinder is lower than the liquid outlet end of the hydrocyclone, and the infusion conduit is lower than the cylinder.

4. The secondary cleaning system for cast-in-place piles according to claim 2, characterized in that, Both the first and second pipes are arranged at an angle.

5. The secondary cleaning system for cast-in-place piles according to claim 2, characterized in that, The inner wall of the chamber is a ring-shaped slope that is narrower at the top and wider at the bottom.

6. The secondary cleaning system for cast-in-place piles according to claim 5, characterized in that, The bottom of the cylinder is an open end, and a cover is detachably installed on the cylinder to seal the open end.

7. The secondary cleaning system for cast-in-place piles according to claim 6, characterized in that, The cover is provided with a sealing ring, which is used to contact the cylinder to achieve a seal.

8. The secondary cleaning system for cast-in-place piles according to claim 1, characterized in that, The mud pump is connected to the inlet end of the hydrocyclone via a connecting pipe.

9. The secondary cleaning system for cast-in-place piles according to claim 8, characterized in that, The first pipe, the second pipe, and the connecting pipe are all rubber hoses.

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