CN113882380A - Air bag type slag removing device and method for sucking sand and stone at bottom of pile - Google Patents

Abstract

The invention provides an air bag type slag removing device and a slag removing method for absorbing sand stones at the bottom of a pile, belonging to the technical field of building construction equipment. The invention can prevent fine sand stones suspended in water or fine sand stones in slurry from floating upwards all the time through the air bag and the partition plate with the hole, so that the situation that the fine sand stones are not cleaned cleanly can be prevented.

Description

Air bag type slag removing device and method for sucking sand and stone at bottom of pile

Technical Field

The invention belongs to the technical field of building construction equipment, relates to the technology of drilling and piling equipment, and particularly relates to an air bag type slag removing device and a slag removing method for sucking sand and stones at the bottom of a pile.

Background

The positive circulation pile hole slag removal method is widely adopted in construction due to the advantages of large slurry consistency and good wall protection effect. The working principle of pile hole slag removal by the positive circulation method is as follows: the mud is pressed to the bottom of the hole by positive circulation of a mud pump, sediment is flushed by upward turning power of the mud, then negative pressure is formed by suction when a sand pump works, pressure difference is formed between the inside and the outside of the pipe due to continuous balanced slag suction, liquid flow is generated, and mud sand and drilling slag at the bottom of the hole reach the ground along with the liquid flow when the flow rate reaches a rated value. The bottom layer of the pile hole slag cleaning adaptation of the positive circulation method is a sand-free pebble layer and a soil layer, the pile hole is drilled by carrying drilling slag through slurry, and mud, sand and stones in the pile hole are carried and cleaned through the slurry, but the positive circulation method slag cleaning device used in actual drilling construction has the following defects:

1. tiny gravels are light and easy to suspend above slurry, and cannot be gathered at the bottom of the pile for centralized suction, so that the slag removal of the pile hole is incomplete.

2. The existing mechanical sand and stone pressure sinking device is easy to damage the wall of a pile hole.

Disclosure of Invention

The invention provides an air bag type slag removal device and a slag removal method for absorbing sand at the bottom of a pile, aiming at the problem that when the pile hole is cleaned by adopting a forward circulation method in the prior art, fine sand is easy to suspend above slurry and cannot be gathered at the bottom of the pile for centralized suction, so that the slag removal of the pile hole is not complete.

The invention leads fine sand particles to be concentrated under the air bag, namely the bottom of the pile hole, by charging air into the air bag, and sucks the fine sand particles accumulated at the bottom of the pile hole along with mud through the mud suction pipe, and the specific technical proposal is as follows:

the invention relates to an air bag type slag removal device for absorbing gravel at the bottom of a pile, which comprises a drilling mechanism, a slurry absorbing mechanism, a perforated partition plate, an air bag fixing mechanism and an air bag inflating mechanism, wherein the drilling mechanism is communicated with the slurry absorbing mechanism, the air bag is connected with the slurry absorbing mechanism through the air bag fixing mechanism, the perforated partition plate is connected with the air bag fixing mechanism, and the air bag inflating mechanism is communicated with the air bag.

Further limiting, the air bag fixing mechanism comprises an annular fixing plate and a connecting rib plate, the air bag surrounds a circle along the periphery of the annular fixing plate, the annular fixing plate is connected with the slurry suction mechanism through the connecting rib plate, the perforated partition plate is connected with the connecting rib plate, and the perforated partition plate and the connecting rib plate are arranged along the radial direction of the annular fixing plate.

Further inject, inhale thick liquid mechanism including inhaling thick liquid pipe and inhaling the stuff pump, be provided with on the drilling mechanism and inhale the thick liquid hole, inhale thick liquid pipe and creep into the thick liquid hole intercommunication of inhaling on the mechanism, inhale stuff pump and inhale thick liquid pipe intercommunication, inhale the thick liquid pipe and be connected with the annular fixed plate through connecting the gusset.

Further inject, gasbag inflation mechanism includes inflator and air duct, an end of air duct and inflator intercommunication, be provided with the air duct perforation on the annular fixed plate, the air duct is fixed on thick liquid suction pipe and connection gusset and is passed the air duct perforation on the annular fixed plate and communicate with the gasbag.

Further limiting, the air guide pipes and the connecting rib plates are multiple, the number of the air guide pipes is the same as that of the connecting rib plates, and the connecting rib plates are evenly distributed along the circumferential direction of the annular fixing plate.

Further limiting, the airbag inflation mechanism comprises a cylinder barrel, a hydraulic plate, a push rod, an elastic piece, an adjusting plate, a movable plate, a prick and a plurality of inflation bags, the cylinder barrel is fixedly connected to an annular fixing plate, one end of the cylinder barrel is sealed through the hydraulic plate, the hydraulic plate can slide along the axial direction of the cylinder barrel, the other end of the cylinder barrel is arranged in an inflation cavity of the airbag, two adjusting holes are arranged on the wall of the cylinder barrel and are arranged oppositely, the adjusting plate penetrates through the two adjusting holes to be movably connected with the cylinder barrel, the adjusting plate, the cylinder barrel and the hydraulic plate jointly form an elastic cavity, the elastic piece is arranged in the elastic cavity, two ends of the elastic piece are respectively and fixedly connected with the adjusting plate and the hydraulic plate, one end of the push rod is fixedly connected with the hydraulic plate, the other end of the push rod sequentially penetrates through the bottom walls of the elastic piece, the adjusting plate and the cylinder barrel to extend into the inflation cavity of the airbag and is connected with the movable plate, a plurality of stabs are arranged on one side, opposite to the push rod, of the moving plate, the stabs are arranged opposite to the inflatable bags, and the inflatable bags are arranged in the inflatable cavity of the air bag.

Further inject, the mechanism is aerifyd to the gasbag still includes fixing support and locating part, fixing support fixed connection is on the outer wall of cylinder, the last spacing hole that is provided with of fixing support, the locating part passes spacing hole and is connected with the regulating plate, the locating part sets up with the hookup location of regulating plate and the hookup location of elastic component and regulating plate relatively.

Further limited, the airbag inflating mechanism further comprises a protective film, the protective film is arranged in an inflating cavity of the airbag, the inflating bags are arranged in the protective film, and the other end of the push rod sequentially penetrates through the elastic piece, the adjusting plate and the bottom wall of the cylinder barrel, extends into the protective film and is connected with the moving plate.

The slag removing method based on the air bag type slag removing device for sucking the sand at the bottom of the pile comprises the following steps:

1) when the pile hole is drilled to the depth of the slag to be removed, water or slurry is continuously poured into the pile hole, the inflator inflates the air bag through the air guide pipe, the gap between the hole wall of the pile hole and the annular fixing plate is filled through the air bag, and then the air guide pipe is closed; the air bag and the perforated partition plate press down the fine sand stone suspended in the water or the fine sand stone in the slurry, so that the fine sand stone suspended in the water or the fine sand stone in the slurry are gathered at the bottom of the pile, the holes in the perforated partition plate play a role in balancing the pressure at the bottom of the pile hole, and the mud, the sand and the stones gathered at the bottom of the pile are intensively and upwards extracted along the slurry suction hole and the slurry suction pipe on the drilling mechanism through the slurry suction pump;

2) when drilling needs to be continued after extracting mud, sand and stones at the bottom of the pile, the grouting pipe drives the air bag to slide downwards along the hole wall of the pile hole, so that fine sand stones in water or fine sand stones in slurry are pressed downwards while sliding, and simultaneously the mud, the sand and the stones gathered at the bottom of the pile are intensively extracted upwards along a slurry suction hole and a slurry suction pipe on the drilling mechanism by a slurry suction pump; and drilling to the required depth of the pile hole and thoroughly cleaning mud, sand and stones at the bottom of the pile.

The slag removing method based on the air bag type slag removing device for sucking the sand at the bottom of the pile comprises the following steps:

1) when the pile hole is drilled to the depth of the slag to be removed, water or slurry is continuously poured into the pile hole; before drilling, the position of the movable plate is adjusted through the limiting piece, so that when the whole air bag type slag removing device is placed to a position needing slag removal, the water pressure can push the hydraulic plate to move along the axial direction of the cylinder barrel, the water pressure plate drives the push rod, the moving plate and the prick to puncture the inflation bag along the axial movement of the cylinder barrel, the gas released by the inflation bag explodes the protective film and inflates the air bag, the air bag fills the gap between the hole wall of the pile hole and the annular fixed plate, the air bag and the clapboard with the hole press down the tiny sand stones or the tiny sand stones suspended in the water, so that the fine sand and stone suspended in the water or the fine sand and stone in the slurry are gathered at the bottom of the pile, the holes on the partition plate with the holes play a role in balancing the pressure at the bottom of the pile hole, and the mud, the sand and the stone gathered at the bottom of the pile are intensively and upwards extracted along the slurry suction hole and the slurry suction pipe on the drilling mechanism by the slurry suction pump;

2) when drilling needs to be continued after extracting mud, sand and stones at the bottom of the pile, the grouting pipe drives the air bag to slide downwards along the wall of the pile hole, so that fine sand stones in water or fine sand stones in slurry are pressed downwards while sliding, and simultaneously the mud, the sand and the stones gathered at the bottom of the pile are intensively extracted upwards along a slurry suction hole and a slurry suction pipe on the drilling mechanism by a slurry suction pump; and drilling to the required depth of the pile hole and thoroughly cleaning mud, sand and stones at the bottom of the pile.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention relates to an air bag type slag removal device for absorbing sand and stones at the bottom of a pile, which comprises a drilling mechanism, a slurry absorbing mechanism, a clapboard with holes, an air bag fixing mechanism and an air bag inflating mechanism, wherein the air bag fixing mechanism is arranged on the bottom of the pile; when the hole is drilled to a certain depth, water or slurry is injected into the drilled hole, the mud, sand and stones deposited at the bottom of the pile are impacted through the water or slurry, the mud, sand and stones deposited at the bottom of the pile are suspended in the water or slurry, the air bag is inflated firstly through the air bag inflating mechanism, gaps between the hole wall of the pile hole and the air bag fixing mechanism are filled through the air bag, the air bag and the partition plate with the holes can press down fine sand stones or fine sand stones in the slurry suspended in the water, so that the fine sand stones or fine sand stones in the slurry suspended in the water are gathered at the bottom of the pile, and the mud, sand and stones at the bottom of the pile are cleaned through the centralized suction mechanism; the air bag and the partition plate with the holes can prevent tiny gravels suspended in water or tiny gravels in slurry from floating upwards all the time, so that the situation that the tiny gravels are not cleaned completely can be avoided, and the air bag is suitable for being used in a positive circulation pile hole slag removal method.

2. When needs continue to creep into, drive the gasbag through inhaling thick liquid mechanism and slide down along stake hole pore wall, the gasbag itself has good sliding property, and water or mud can also play and carry out lubricated effect to the gasbag, has further strengthened the sliding property of gasbag, can effectively avoid the gasbag to the scraping and the destruction of stake hole pore wall.

3. The air duct all has a plurality ofly with the connection gusset, and the air duct is the same with the quantity of connecting the gusset, and a plurality ofly connect the gusset along the circumference evenly distributed of annular fixed plate, corresponds an air duct of connection on every connection gusset promptly for the air duct can make the gasbag expand uniformly along the even part of circumference of gasbag when aerifing for the gasbag, can prevent effectively that the gasbag from leading to the condition of rupture to take place owing to aerify the inequality.

4. The invention skillfully utilizes water or slurry at the bottom of the pile to apply force to the water pressure plate, so that the water pressure on the water pressure plate overcomes the elasticity applied by the elastic part to sequentially push the push rod, the moving plate and the prick to move forwards, the inflatable bag is pricked, sodium azide is filled in the inflatable bag, sodium azide molecules are impacted in the process of pricking the inflatable bag by the prick to generate chemical reaction, and the reaction formula is as follows: 2NaN3 (impingement) ═ 2Na +3N2 (gas); a large amount of nitrogen is generated, and the nitrogen can explode the protective film and fill the air bag; meanwhile, the protective film can limit the inflation bag in a limited narrow space, and the impact effect among sodium azide molecules can be enhanced in the process of puncturing the inflation bag by a cone, so that the generated nitrogen amount is more; the whole working principle and the construction process are very simple and easy to operate.

5. The outer wall of the cylinder barrel is fixedly connected with a fixed support, a limiting hole is formed in the fixed support, the limiting part penetrates through the limiting hole to be connected with the adjusting plate, the position of the moving plate can be flexibly adjusted through the limiting part, the elastic force of the elastic part can be adjusted through the moving plate, and the hydraulic plate can be suitable for depth construction operation of different water or slurry.

Drawings

FIG. 1 is a schematic structural view of an air bag type slag removal device for sucking sand at the bottom of a pile;

FIG. 2 is an isometric view of the balloon in a deflated state;

FIG. 3 is an isometric view of the airbag in an open condition;

FIG. 4 is a schematic structural view of an inflation mechanism;

FIG. 5 is a schematic view showing the structure of the air-filled bag in a burst state;

the device comprises a pile breaking hammer, a slurry suction pipe, a ring-shaped fixing plate, a connecting rib plate, a pile hole, a partition plate with holes, a 7-air bag, a cylinder barrel, a water pressing plate, a push rod, a spring, a 12-adjusting hole, an adjusting plate, a fixed support, a threaded rod, a screw rod, a moving plate, a conical thorn, an inflation bag and a protection film, wherein the pile breaking hammer is 1-part, the slurry suction pipe is 2-part, the ring-shaped fixing plate is 3-part, the connecting rib plate is 4-part, the pile hole is 5-part, the partition plate with holes is 6-part, the air bag is 7-part, the cylinder barrel is 8-part, the water pressing plate is 9-part, the push rod is 10-part, the spring is 11-part, the adjusting hole is 12-part, the adjusting plate is 13-part, the fixed support is 14-part, the threaded rod is 15-part, the moving plate is 16-part, the conical thorn is 18-part of the inflation bag, and the protection film is 19-part.

Detailed Description

The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.

Example 1

Referring to fig. 1-3, the air bag type slag removing device for sucking sand at the bottom of a pile in the embodiment comprises a drilling mechanism, a slurry sucking mechanism, apartition plate 6 with holes, anair bag 7, an air bag fixing mechanism and an air bag inflating mechanism; the drilling mechanism is apile breaking hammer 1, and a slurry suction hole is formed in the axial central position of thepile breaking hammer 1; the slurry suction mechanism comprises aslurry suction pipe 2 and a slurry suction pump, the slurry suction pump is arranged at the slurry outlet of theslurry suction pipe 2, the slurry suction pump is communicated with theslurry suction pipe 2, and theslurry suction pipe 2 is also communicated with a slurry suction hole on thepile breaking hammer 1; the air bag fixing mechanism comprises anannular fixing plate 3 and connectingrib plates 4, the number of the connectingrib plates 4 is 6, each connectingrib plate 4 is arranged along the radial direction of theannular fixing plate 3, the 6 connectingrib plates 4 are uniformly distributed along the circumferential direction of theannular fixing plate 3, the included angle between the central line axes of the two adjacent connectingrib plates 4 is 60 degrees, theannular fixing plate 3 is fixedly connected with theslurry suction pipe 2 through the 6 connectingrib plates 4, theair bag 7 surrounds a circle along the periphery of theannular fixing plate 3, theperforated partition plate 6 is fixedly connected to the lower end faces of the 6 connectingrib plates 4, theperforated partition plate 6 is arranged along the radial direction of theannular fixing plate 3, and the peripheral edge of theperforated partition plate 6 is fixedly connected with theannular fixing plate 3; gasbag inflation mechanism includes inflator and air duct, the air duct has 6, be provided with 6 air duct mounting grooves on inhaling the inner wall of thickliquid pipe 2, all be provided with the air duct mounting groove on connectinggusset 4, it perforates to be provided with 6 air ducts on annularfixed plate 3, and inhale the air duct mounting groove on the thickliquid pipe 2, connect the air duct mounting groove ongusset 4 and the fenestrate position one-to-one of air duct on the annularfixed plate 3, the inflator is arranged in on the ground plane of stake hole upper end, a tip and the inflator intercommunication of gas tube, another tip of gas tube passes in proper order and inhales thickliquid pipe 2, connectgusset 4 and air duct perforation andgasbag 7 intercommunication, and the gas tube joint is in the air duct mounting groove on inhaling thickliquid pipe 2 and the air duct mounting groove on connectinggusset 4, correspond an air duct in every air duct mounting groove and the air duct perforation.

The slag removing method of the air bag type slag removing device for sucking sand at the bottom of the pile comprises the following steps:

1) when thepile hole 5 is drilled to the depth of 20 m and slag removal is needed, water is filled into thepile hole 5, the inflator is opened, the inflator inflates theair bag 7 through the 6 air guide tubes, along with continuous expansion of the air bag, a gap between the hole wall of the pile hole and theannular fixing plate 3 is filled through theair bag 7, and after theair bag 7 is filled, the air guide tubes are connected to one end of the inflator to be closed; the fine sand and stone suspended in the water are pressed downwards through theair bag 7 and thepartition plate 6 with holes, so that the fine sand and stone suspended in the water are gathered at the bottom of the pile hole, the holes in thepartition plate 6 with holes play roles in balancing the pressure at the bottom of the pile hole and preventing the bottom of the pile hole from deforming, mud, sand and stone gathered at the bottom of the pile are discharged outwards into a mud pit along a slurry suction hole in thepile breaking hammer 1 and aslurry suction pipe 2 under the suction of a slurry suction pump, the mud, sand and stone are precipitated in the mud pit, and the supernatant of the precipitated mud is continuously poured into the pile hole in a circulating manner;

2) when the mud, sand and stones at the bottom of the pile hole are cleaned and need to be drilled continuously, theair bag 7 is driven by pressing thegrouting pipe 2 downwards to slide downwards along the hole wall of thepile hole 5, the fine sand stones in the water or the fine sand stones in the slurry are pressed downwards while sliding, and the mud, sand and stones gathered at the bottom of the pile enter the slurry pool through a slurry suction pump, and are recycled after being intensively extracted upwards along a slurry suction hole in the drilling mechanism and theslurry suction pipe 2 and deposited in the slurry pool; and drilling to the required depth of the pile hole and thoroughly cleaning mud, sand and stones at the bottom of the pile hole.

Example 2

The embodiment of the air bag type slag removing device for sucking the sand and stone at the bottom of the pile comprises a drilling mechanism, a slurry sucking mechanism, aclapboard 6 with holes, anair bag 7, an air bag fixing mechanism and an air bag inflating mechanism; the drilling mechanism is a rotary drilling bucket, and a slurry suction hole is formed in the rotary drilling bucket along the axial central position; the slurry suction mechanism comprises aslurry suction pipe 2 and a slurry suction pump, the slurry suction pump is arranged at the slurry outlet of theslurry suction pipe 2, the slurry suction pump is communicated with theslurry suction pipe 2, and theslurry suction pipe 2 is also communicated with a slurry suction hole on the rotary drilling bucket; the air bag fixing mechanism comprises anannular fixing plate 3 and 8 connectingrib plates 4, wherein the number of the connectingrib plates 4 is 8, each connectingrib plate 4 is arranged along the radial direction of theannular fixing plate 3, the 8 connectingrib plates 4 are uniformly distributed along the circumferential direction of theannular fixing plate 3, an included angle between the central line axes of the two adjacent connectingrib plates 4 is 45 degrees, theannular fixing plate 3 is fixedly connected with theslurry suction pipe 2 through the 8 connectingrib plates 4, theair bag 7 surrounds a circle along the periphery of theannular fixing plate 3, theperforated partition plate 6 is fixedly connected to the lower end face of the 8 connectingrib plates 4, theperforated partition plate 6 is arranged along the radial direction of theannular fixing plate 3, and the peripheral edge of theperforated partition plate 6 is fixedly connected with theannular fixing plate 3; 8 air bag inflating mechanisms are arranged, and one air bag inflating mechanism is arranged between every two adjacent connectingrib plates 4; referring to fig. 4-5, the airbaginflation mechanism cylinder 8, thewater pressure plate 9, thepush rod 10, the elastic member, the adjustingplate 13, thefixed support 14, the limiting member, themoving plate 16, theawl 17, the plurality ofinflation bags 18 and theprotective film 19, wherein the elastic member is aspring 11, and the limiting member is a threadedrod 15; the outer wall of thecylinder barrel 8 is fixedly connected with theannular fixing plate 3, one end of thecylinder barrel 8 is sealed by thewater pressure plate 9, thewater pressure plate 9 can slide back and forth along the axial direction of thecylinder barrel 8, the inner wall of thecylinder barrel 8 is provided with a positioning clamping table, the positioning clamping table is arranged on the outer side of thewater pressure plate 9, thewater pressure plate 9 is limited by the positioning clamping table, thewater pressure plate 9 is prevented from slipping from thecylinder barrel 8, the other end of thecylinder barrel 8 penetrates through the bag wall of theair bag 7 and is arranged in the inner cavity of theprotective film 19, theprotective film 19 is fixedly connected with thecylinder barrel 8 and is arranged in the inner cavity of theair bag 7, a plurality ofair inflation bags 18 are arranged in theprotective film 19, and sodium azide particles are arranged in theair inflation bags 18; two adjustingholes 12 are formed in the wall of thecylinder barrel 7, the two adjustingholes 12 are arranged oppositely, an adjustingplate 13 penetrates through the two adjustingholes 12 and is movably connected with thecylinder barrel 8, the adjustingplate 13 can slide back and forth along the axial direction of thecylinder barrel 8, an elastic cavity is defined by the adjustingplate 13, thecylinder barrel 8 and thewater pressing plate 9 together, thespring 11 is arranged in the elastic cavity, two end portions of thespring 11 are fixedly connected with the inner side of thewater pressing plate 9 and the adjustingplate 13 respectively, one end portion of apush rod 18 is fixedly connected with the inner side of thebook pressing plate 9, the other end of thepush rod 10 penetrates through the middle portion of thespring 11, theadjusting plate 13 and the bottom of thecylinder barrel 8 in sequence to extend into an inner cavity of aprotective film 19 and is fixedly connected with a movingplate 16, 4conical spines 17 are arranged on one side, opposite to thepush rod 10, of theconical spines 17 are arranged opposite to the plurality ofinflation bags 18; the lower ends of the positions corresponding to the two adjustingholes 12 are respectively provided with afixed support 14, thefixed supports 14 are fixedly connected to the outer wall of thecylinder barrel 8, thefixed supports 14 are provided with limit holes along the axial direction of thecylinder barrel 8, the limit holes are threaded holes, one end part of a threadedrod 15 penetrates through the limit holes and abuts against the adjustingplate 13, the other end part of the threadedrod 15 is fixed through a nut, and the connecting position of the threadedrod 15 and the adjustingplate 13 is opposite to the connecting position of thespring 11 and the adjustingplate 13; .

The slag removing method of the air bag type slag removing device for sucking sand at the bottom of the pile comprises the following steps:

1) when thepile hole 5 is drilled to the depth of 20 m and slag is required to be removed, filling water into thepile hole 5;

2) before drilling, the position of the movingplate 16 is adjusted by rotating the threadedrod 15, so that when the whole air bag type slag removal device is lowered to the depth of 20 m, water pressure with the height of 20 m can push thewater pressure plate 9 to move forwards by about 1 cm along the axial direction of thecylinder 8, thewater pressure plate 9 drives thepush rod 10, the movingrod 16 and theconical spine 17 to move forwards by about 1 cm along the axial direction of thecylinder 8, theair inflation bag 18 is punctured by theconical spine 17, sodium azide molecules of theair inflation bag 18 can instantly react under puncturing and bumping of the conical spine, and the reaction formula is 2NaN3 (bumping) which is 2Na +3N2 (gas); a large amount of nitrogen is generated, theprotective film 19 is exploded through the nitrogen and theair bag 7 is filled, and theair bag 7 filled with the nitrogen fills the gap between the hole wall of thepile hole 5 and theannular fixing plate 3; the tiny gravels suspended in the water are pressed downwards through theair bag 7 and thepartition plate 6 with holes, so that the tiny gravels suspended in the water are gathered at the bottom of the pile hole, the holes on thepartition plate 6 with holes play roles in balancing the pressure at the bottom of the pile hole and preventing the bottom of the pile hole from deforming, mud, sand and stones gathered at the bottom of the pile are discharged outwards into a mud pit along a slurry suction hole and aslurry suction pipe 2 on a rotary drilling bucket under the suction of a slurry suction pump, the mud, the sand and the stones are settled in the mud pit, and supernatant of the settled mud is continuously poured into the pile hole in a circulating manner;

3) when the mud, sand and stones at the bottom of the pile hole are cleaned and need to be drilled continuously, theair bag 7 is driven by pressing thegrouting pipe 2 downwards to slide downwards along the hole wall of thepile hole 5, the fine sand stones in the water or the fine sand stones in the slurry are pressed downwards while sliding, and the mud, sand and stones gathered at the bottom of the pile enter the slurry pool through a slurry suction pump, and are recycled after being intensively extracted upwards along a slurry suction hole in the drilling mechanism and theslurry suction pipe 2 and deposited in the slurry pool; and drilling to the required depth of the pile hole and thoroughly cleaning mud, sand and stones at the bottom of the pile hole.

The elastic member inembodiment 2 may also be an elastic rubber block or an elastic plastic block, and the limiting member may also be a threaded rod, a pin, or other structural members.

Claims (10)

1. A gasbag formula scarfing cinder device for absorbing sand and stone at bottom of stake, its characterized in that, including drilling mechanism, inhale thick liquid mechanism, foraminiferous baffle (6), gasbag (7), gasbag fixed establishment and gasbag aeration mechanism, drilling mechanism with inhale thick liquid mechanism intercommunication, gasbag (7) are connected with inhaling thick liquid mechanism through gasbag fixed establishment, foraminiferous baffle (6) are connected with gasbag fixed establishment, gasbag aeration mechanism and gasbag (7) intercommunication.

2. The air bag type slag removal device for absorbing sand at the bottom of the pile according to claim 1, wherein the air bag fixing mechanism comprises an annular fixing plate (3) and a connecting rib plate (4), the air bag (7) surrounds the annular fixing plate (3) for one circle, the annular fixing plate (3) is connected with the slurry absorbing mechanism through the connecting rib plate (4), the partition plate (6) with holes is connected with the connecting rib plate (4), and the partition plate (6) with holes and the connecting rib plate (4) are arranged along the radial direction of the annular fixing plate (3).

3. The air bag type slag removal device for absorbing gravels at the bottom of the pile according to claim 2, wherein the slurry absorbing mechanism comprises a slurry absorbing pipe (2) and a slurry absorbing pump, the drilling mechanism is provided with slurry absorbing holes, the slurry absorbing pipe (2) is communicated with the slurry absorbing holes on the drilling mechanism, the slurry absorbing pump is communicated with the slurry absorbing pipe (2), and the slurry absorbing pipe (2) is connected with the annular fixing plate (3) through a connecting rib plate (4).

4. An air bag type slag removal device for absorbing gravel at the bottom of a pile according to claim 3, wherein the air bag inflation mechanism comprises an inflator and an air guide pipe, one end part of the air guide pipe is communicated with the inflator, an air guide pipe through hole is arranged on the annular fixing plate (3), and the air guide pipe is fixed on the slurry absorbing pipe (2) and the connecting rib plate (4) and passes through the air guide pipe through hole on the annular fixing plate (3) to be communicated with the air bag (7).

5. The air bag type slag removing device for absorbing sand at the bottom of the pile according to claim 4, wherein the number of the air guide pipes and the connecting rib plates (4) is the same, and the connecting rib plates (4) are uniformly distributed along the circumferential direction of the annular fixing plate (3).

6. The air bag type slag removal device for absorbing sand and stones at the bottom of the pile as claimed in claim 3, wherein the air bag inflation mechanism comprises a cylinder (8), a hydraulic plate (9), a push rod (10), an elastic member, an adjusting plate (13), a moving plate (16), a pricker (17) and a plurality of inflation bags (18), the cylinder (8) is fixedly connected to the annular fixing plate (3), one end of the cylinder (8) is sealed by the hydraulic plate (9), the hydraulic plate (9) can slide along the axial direction of the cylinder (8), the other end of the cylinder (8) is arranged in the inflation cavity of the air bag (7), two adjusting holes (12) are arranged on the wall of the cylinder (8), the two adjusting holes (12) are arranged oppositely, the adjusting plate (13) penetrates through the two adjusting holes (12) to be movably connected with the cylinder (8), and the adjusting plate (13), Cylinder (8) and water clamp plate (9) enclose into the elasticity chamber jointly, the elasticity intracavity is arranged in to the elastic component, just the both ends of elastic component respectively with regulating plate (13) and water clamp plate (9) fixed connection, a tip and water clamp plate (9) fixed connection of catch bar (10), another tip of catch bar (10) passes the diapire of elastic component, regulating plate (13) and cylinder (8) in proper order and extends to the inflation intracavity of gasbag (7) and is connected with movable plate (16), one side relative with catch bar (10) on movable plate (16) is provided with a plurality of pricks (17), prick (17) and a plurality of air bags (18) are just to setting up, and the inflation intracavity of gasbag (7) is arranged in to a plurality of air bags (18).

7. The air bag type slag removal device for sucking sand at the bottom of a pile as claimed in claim 6, wherein the air bag inflation mechanism further comprises a fixed support (14) and a limiting piece, the fixed support (14) is fixedly connected to the outer wall of the cylinder barrel (8), a limiting hole is formed in the fixed support (14), the limiting piece penetrates through the limiting hole to be connected with the adjusting plate (13), and the connecting position of the limiting piece and the adjusting plate (13) and the connecting position of the elastic piece and the adjusting plate (13) are arranged oppositely.

8. The air bag type slag removing device for absorbing sand at the bottom of a pile as claimed in claim 7, wherein the air bag inflating mechanism further comprises a protective film (19), the protective film (19) is arranged in the inflating cavity of the air bag (7), a plurality of inflating bags (18) are arranged in the protective film (19), and the other end of the push rod (10) sequentially penetrates through the elastic part, the adjusting plate (13) and the bottom wall of the cylinder barrel (8) to extend into the protective film (19) and is connected with the moving plate (16).

9. The slag removal method of the air bag type slag removal device for sucking the sand at the bottom of the pile according to claim 5, which is characterized by comprising the following steps of:

1) when the pile hole (5) is drilled to the depth of the slag to be removed, water or slurry is continuously poured into the pile hole (5), the inflator inflates the air bag (7) through the air duct, the gap between the hole wall of the pile hole (5) and the annular fixing plate (3) is filled through the air bag (7), and then the air duct is closed; the air bag (7) and the perforated partition plate (6) press down the fine sand stone suspended in the water or the fine sand stone in the slurry, so that the fine sand stone suspended in the water or the fine sand stone in the slurry are gathered at the bottom of the pile, the holes in the perforated partition plate (6) play a role in balancing the pressure at the bottom of the pile hole, and the mud, the sand and the stones gathered at the bottom of the pile are intensively and upwards extracted along the slurry suction hole and the slurry suction pipe (2) in the drilling mechanism through the slurry suction pump;

2) when drilling needs to be continued after extracting mud, sand and stones at the bottom of the pile, the grouting pipe (2) drives the air bag (7) to slide downwards along the hole wall of the pile hole (5), the fine sand stones in water or the fine sand stones in slurry are pressed downwards while sliding, and simultaneously the mud, sand and stones gathered at the bottom of the pile are intensively extracted upwards along a slurry suction hole and a slurry suction pipe (2) on the drilling mechanism through a slurry suction pump; and drilling to the required depth of the pile hole and thoroughly cleaning mud, sand and stones at the bottom of the pile.

10. The slag removal method of the air bag type slag removal device for sucking sand at the bottom of the pile according to claim 8, which is characterized by comprising the following steps:

1) when the pile hole (5) is drilled to the depth of the slag to be removed, water or slurry is continuously poured into the pile hole (5); before drilling, the position of the movable plate (16) is adjusted through the limiting piece, so that when the whole air bag type slag removing device is placed to a position needing slag removal, water pressure can push the hydraulic plate (9) to move axially along the cylinder barrel (8), the push rod (10), the movable plate (16) and the conical prick (17) are driven by the hydraulic plate (9) to move axially along the cylinder barrel (8) to puncture the air inflation bag (18), gas released by the air inflation bag (18) explodes the protective film (19) and inflates the air bag (7), the air bag (7) fills a gap between the hole wall of the pile hole (5) and the annular fixed plate (3), the air bag (7) and the perforated partition plate (6) downwards press fine sand stones or fine sand stones suspended in water, so that the fine sand stones or fine sand stones suspended in water are gathered at the bottom of the pile, holes in the perforated partition plate (6) play a role in balancing the pressure at the bottom of the pile hole, the mud, sand and stones gathered at the bottom of the pile are intensively and upwards extracted along a slurry suction hole and a slurry suction pipe (2) on the drilling mechanism by a slurry suction pump;

2) when drilling needs to be continued after extracting mud, sand and stones at the bottom of the pile, the grouting pipe (2) drives the air bag (7) to slide downwards along the wall of the pile hole (5), the small sand stones in the water or the small sand stones in the slurry are pressed downwards while sliding, and simultaneously the mud, the sand and the stones gathered at the bottom of the pile are intensively extracted upwards along a slurry suction hole and a slurry suction pipe (2) on a drilling mechanism through a slurry suction pump; and drilling to the required depth of the pile hole and thoroughly cleaning mud, sand and stones at the bottom of the pile.

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