CN212249908U - Sand filtering system for bored pile - Google Patents

Abstract

The utility model discloses a bored pile sand filtering system, which comprises a slurry temporary storage pool excavated on one side of a bored pile, a slurry suction pump arranged in the slurry temporary storage pool, and a sand filter arranged outside the slurry temporary storage pool; the sand filter comprises a sealing cylinder body with a support frame, and the lower part of the cylinder body is of a conical structure with a large upper part and a small lower part; the bottom of the barrel is provided with a slag discharging part, the side wall of the upper part of the barrel is communicated with a slurry inlet pipe which inclines upwards, the liquid inlet end of the slurry inlet pipe is communicated with the liquid outlet end of the slurry suction pump through a connecting hose, an annular guide plate which is vertically fixed on the top wall of the barrel is arranged in the barrel, the lower edge of the annular guide plate is positioned below the communicating port of the slurry inlet pipe and the barrel, the top wall of the barrel on the inner side of the annular guide plate is communicated with a slurry outlet pipe, and the slurry outlet pipe is communicated with a liquid return hose, the liquid outlet end of which extends. The utility model discloses the advantage lies in simple structure, and processing and simple installation do not receive the place restriction, can realize the spot facing homemade.

Description

Sand filtering system for bored pile

Technical Field

The utility model belongs to the technical field of engineering construction drilling bored concrete pile technique and specifically relates to a sand system is considered to drilling pile convenient to processing self-control.

Background

The construction of the cast-in-situ bored pile is often involved in engineering construction, and the last procedure of the cast-in-situ bored pile construction is hole cleaning. The existing hole cleaning process generally introduces slurry containing gravel impurities in a drilled pile into a slurry pool, and then removes slurry slag by a manual sand-pumping method; the method has the advantages of long use time, unsatisfactory hole cleaning effect, extremely low manual sand bailing efficiency when the sand layer is thick, large manpower consumption, greatly prolonged hole cleaning time and easy delay of construction period.

Disclosure of Invention

The utility model aims to provide a bored pile worrys sand system convenient to field processing self-control and installation.

In order to achieve the above purpose, the utility model can adopt the following technical proposal:

the utility model discloses a bored pile sand filtering system, which comprises a slurry temporary storage pool excavated on one side of a bored pile for draining slurry, a slurry suction pump arranged in the slurry temporary storage pool, and a sand filter arranged outside the slurry temporary storage pool; the sand filter comprises a sealing cylinder body with a support frame, and the lower part of the cylinder body is of a conical structure with a large upper part and a small lower part; the bottom of barrel is provided with the sediment portion of slagging tap that is arranged in discharging the thick liquid gravel impurity, and the intercommunication is provided with the ascending thick liquid pipe that advances of slope on being located the lateral wall on barrel upper portion, the feed liquor end that advances thick liquid pipe pass through coupling hose with the play liquid end of mud suction pump communicates, is provided with the annular guide plate that is used for check to keep off the thick liquid on its roof of vertical fixation in the barrel, the lower border of annular guide plate is located advance thick liquid pipe with the intercommunication mouth below of barrel, the intercommunication is provided with out the thick liquid pipe on being located the inboard barrel roof of annular guide plate, it is provided with out the liquid end and extends to go out the intercommunication on the thick liquid pipe the liquid hose.

The slag discharging part comprises a slag discharging pipe vertically communicated with the bottom of the barrel body, the slag discharging pipe comprises an upper vertical section and a lower conical section, a first ball valve is arranged on the vertical section of the slag discharging pipe, and a second ball valve is arranged on the conical section of the slag discharging pipe.

The inclination angle of the slurry inlet pipe is 5-10 degrees.

The utility model discloses the advantage lies in simple structure, and processing and simple installation do not receive the place restriction, can realize the spot facing homemade. Through the mud suction pump with the mud of containing grit impurity that accumulates in the mud pond of keeping in the pond in the mud suction sand filter, and under the conical structure effect of annular guide plate and sand filter self barrel lower part in the sand filter inner chamber, make mud be high-speed rotatory vortex form and flow in, thereby accomplish the separation of grit impurity in the mud under gravity and centrifugal force's dual function, grit impurity can sink to the barrel bottom and discharge through the scum pipe, and the mud up to standard after the separation can impress the drilling pile bottom once more through play thick liquid pipe and return liquid hose, the separation effect is obvious, need not artifical sand bailing, lighten intensity of labour, reduce the manpower, shorten the clear hole time, improve clear hole efficiency and clear hole effect greatly, avoid delaying construction period because of clear hole.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of the sand screen of fig. 1.

Detailed Description

As shown in fig. 1, the system for filtering sand by using the bored pile of the present invention comprises a slurry temporary storage tank 2 excavated at one side of the bored pile 1, wherein the slurry temporary storage tank 2 is communicated with the opening of the pile top of the bored pile 1 through a drainage channel for draining and storing slurry in the bored pile 1; in addition, the device also comprises a slurry suction pump 3 arranged in the slurry temporary storage tank 2 and a sand filter arranged outside the slurry temporary storage tank 2.

As shown in fig. 2, the sand filter comprises a cylinder body 5 with a sealing structure of a support frame 4, wherein the lower part of the cylinder body 5 is in a conical structure with a large upper part and a small lower part; the bottom of the cylinder body 5 is provided with a slag discharging part for discharging gravel impurities in slurry, the slag discharging part comprises a slag discharging pipe 11 vertically communicated with the bottom of the cylinder body 5, the slag discharging pipe 11 consists of an upper vertical section and a lower conical section, the vertical section of the slag discharging pipe 11 is provided with a first ball valve 12, the conical section of the slag discharging pipe 11 is provided with a second ball valve 13, and the effective discharge of the gravel impurities can be realized by matching the vertical section and the necking conical section with the first ball valve 12 and the second ball valve 13; first ball valve 12 sets up on the vertical section of scum pipe 11, and its purpose can effectively clear away large granule gravel impurity for the difficult discharged gravel impurity of the convenience of buffering, and second ball valve 13 sets up on the 11 toper sections of scum pipe in first ball valve 12 below, and its purpose can better control the scum volume when being convenient for arrange the sediment, effectively prevents that mud from losing in a large number.

The side wall at the upper part of the barrel 5 is communicated with a pulp inlet pipe 6 inclining upwards, the inclination angle of the pulp inlet pipe 6 is 5-10 degrees, the liquid inlet end of the pulp inlet pipe 6 is communicated with the liquid outlet end of the slurry suction pump 3 through a connecting hose 7, an annular guide plate 8 which is vertically fixed on the top wall of the barrel 5 and used for blocking slurry is arranged in the barrel 5, an annular cavity is formed between the annular guide plate 8 and the inner wall of the barrel 5, and the lower edge of the annular guide plate 8 is positioned below the communicating port of the pulp inlet pipe 6 and the barrel 5; the top wall of the cylinder 5 positioned at the inner side of the annular guide plate 8 is communicated with a slurry outlet pipe 9, and the slurry outlet pipe 9 is communicated with a liquid return hose 10 of which the liquid outlet end extends to the bottom of the drilled pile 1. The purpose of the slurry inlet pipe 6 inclining upwards by 5-10 degrees is to enable slurry to downwards impact an annular guide plate 8 in the cylinder 5 with an angle through power generated by the slurry suction pump 3 when the slurry is injected into the cylinder 5, so that high-speed vortexes are generated, and gravel impurities in the slurry can be separated more quickly under the dual action of gravity and centrifugal force.

When the slurry temporary storage tank 2 is used, the slurry suction pump 3 is only needed to be started to pump the slurry in the slurry temporary storage tank 2 into the sand filter, when the slurry pumped into the sand filter by the slurry suction pump 3 enters the barrel body 5 through the slurry inlet pipe 6, the slurry flows into the annular chamber between the annular guide plate 8 and the inner wall of the barrel body 5 in a rotating manner along one direction through the grid of the annular guide plate 8, and is matched with the conical structure at the lower part of the barrel body 5 to form vortex-shaped slurry rotating at high speed, so that gravel impurities in the slurry are separated under the double actions of gravity and centrifugal force, the sand content of the slurry can be effectively reduced to be below 1%, the consistency and the specific gravity of the slurry can be optimized, and the performance of the separated slurry can completely meet the standard requirement; and finally, the standard-reaching slurry is accumulated and ascended in the cylinder 5 until the slurry is pressed into the bottom of the drilled pile 1 again through the slurry outlet pipe 9 and the liquid return hose 10 to form circulation.

Claims (3)

1. The utility model provides a bored pile considers sand system, includes that excavation is used for mud of drainage mud to keep in pond (2), its characterized in that in bored pile (1) one side: the device also comprises a slurry suction pump (3) arranged in the slurry temporary storage tank (2) and a sand filter arranged outside the slurry temporary storage tank (2); the sand filter comprises a sealing cylinder body (5) with a support frame (4), and the lower part of the cylinder body (5) is of a conical structure with a large upper part and a small lower part; the bottom of barrel (5) is provided with the sediment portion of slagging tap that is arranged in discharging the thick liquid gravel impurity, and the lateral wall that is located barrel (5) upper portion communicates and is provided with the ascending thick liquid pipe (6) that advances of slope, the feed liquor end of advancing thick liquid pipe (6) pass through coupling hose (7) with the play liquid end of mud suction pump (3) communicates mutually, is provided with annular guide plate (8) that are used for the check to keep off the thick liquid on its roof of vertical fixation in barrel (5), the lower border of annular guide plate (8) is located advance thick liquid pipe (6) with the intercommunication mouth below of barrel (5), the intercommunication is provided with out thick liquid pipe (9) on barrel (5) roof that is located annular guide plate (8) inboard, it is provided with out the liquid end and extends to go out liquid hose (10) of drilling pile (1) bottom to go up the intercommunication.

2. The bored pile sand filtration system according to claim 1, wherein: the slag discharging part comprises a slag discharging pipe (11) which is vertically communicated with the bottom of the barrel body (5), the slag discharging pipe (11) is composed of an upper vertical section and a lower conical section, a first ball valve (12) is arranged on the vertical section of the slag discharging pipe (11), and a second ball valve (13) is arranged on the conical section of the slag discharging pipe (11).

3. The bored pile sand filtration system according to claim 1 or 2, wherein: the inclination angle of the pulp inlet pipe (6) is 5-10 degrees.

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