CN218474948U - Slurry circulating device of non-excavation horizontal directional drilling - Google Patents

Abstract

The utility model relates to a mud circulating device of directional brill of non-excavation level, belong to the technical field of non-excavation construction equipment, it is including handling the pond, be equipped with the division board in the processing pond, the division board divide into mud circulation pond and rubble collection room with the circulation pond, be equipped with the filter in the mud circulation pond, the filter is divided into the separation chamber on upper strata and the circulation chamber of lower floor with mud circulation pond, be equipped with into thick liquid mouth and grout outlet on the circulation pond, advance thick liquid mouth and separation chamber intercommunication, grout outlet and circulation chamber intercommunication, the filter is from keeping away from the one end of rubble collection room to the one end downward sloping gradually that is close to the rubble collection room, be equipped with the rubble calandria that supplies the rubble on the division board to pass through on the division board, the rubble calandria is worn out to the filter bottom, be equipped with the shutoff mechanism who is used for sealing the rubble calandria on the division board. This application filters through the rubble to in the mud, has and reduces the underpass and takes place to block up and then influence the effect that the possibility of mud was irritated.

Description

Slurry circulating device of non-excavation horizontal directional drilling

Technical Field

The application relates to the field of trenchless construction equipment, in particular to a slurry circulating device of a trenchless horizontal directional drill.

Background

The horizontal directional drilling machine is a construction machine for laying various underground utilities (pipelines, cables and the like) under the condition of not excavating the ground surface, and is widely used for passing through roads, railways, buildings and rivers, and laying pipelines such as water supply, gas, electric power, telecommunication, natural gas, petroleum and the like under the condition of not easily excavating the ground surface such as downtown areas, cultural relic protection areas, crop protection areas and vegetation protection areas.

At present, in the process of excavating and reaming underground passages of a horizontal directional drilling machine, mud and water are needed to lubricate and cool a drill bit so as to improve the tunneling efficiency of the drill bit and prolong the service life of the drill bit. In general, in order to save water resources, when lubricating a drill bit, slurry generated in a tunneling process is mostly adopted for recycling, and a small amount of water is matched to lubricate the drill bit together.

At the drill bit tunnelling in-process, can carry out the breakage to underground rock etc. and rock after the breakage is together discharged along with mud, carries out centralized processing on ground, and mud is mingled with the together entering circulation of rubble, because the rubble texture is hard and the dead weight is great, deposits the jam in underground passage easily, influences the efficiency in the mud irrigation passageway, influences the lubrication and the cooling effect of drill bit then, consequently need often carry out the mediation of pipeline, influences the efficiency of construction very much.

SUMMERY OF THE UTILITY MODEL

In order to improve the technical problem, the application provides a mud circulating device of directional brill of trenchless level.

The application provides a mud circulating device of directional brill of non-excavation level adopts following technical scheme:

the utility model provides a mud circulating device of non-excavation horizontal directional drilling, includes handles the pond, be equipped with the division board in handling the pond, the division board divide into mud circulation pond and rubble collection room with the circulation pond, be equipped with the filter in the mud circulation pond, the filter divide into the separation chamber on upper strata and the circulation chamber of lower floor with mud circulation pond, be equipped with into thick liquid mouth and grout outlet on the mud circulation pond, advance thick liquid mouth and separation chamber intercommunication, grout outlet and circulation chamber intercommunication, the filter is from keeping away from the one end of rubble collection chamber to the one end of being close to rubble collection chamber downward sloping gradually, be equipped with the rubble calandria that supplies the rubble on the filter to pass through on the division board, the rubble calandria is worn out to the filter bottom, be equipped with the shutoff mechanism who is used for sealing the rubble calandria on the division board.

Through adopting above-mentioned technical scheme, to be thoughtlessly having the mud of rubble from advancing the thick liquid mouth injection treatment pond in, the rubble calandria is closed this moment, filters the back through the rubble of filter in to mud, and the rubble is stayed on the filter, and mud sees through the filter and flows into in the circulation chamber, finally discharges from a thick liquid mouth. Through the filtering action of filter, filter out the rubble from mud, reduced the content of the rubble in the mud that flows from the grout outlet, and then caused the underground passage when reducing mud cyclic utilization and take place the deposit possibility of blockking up to improve the efficiency of construction.

Optionally, the plugging mechanism comprises a plugging plate, the plugging plate is arranged on one side, close to the gravel collecting chamber, of the partition plate in a sliding mode along the vertical direction, the bottom end of the plugging plate is abutted to the top face of the filter plate, and a driving piece for driving the plugging plate to lift is arranged on the partition plate.

Through adopting above-mentioned technical scheme, the driving piece drives the shutoff board and goes up and down to the realization is to opening and close of rubble escape, simple structure, the operation of being convenient for.

Optionally, a collecting box used for collecting the crushed stones falling from the filtering plate is arranged in the crushed stone collecting chamber, a lifting handle is arranged in the center of the top end of the collecting box, a pull rope is arranged on the lifting handle, and a winding mechanism used for winding the pull rope is arranged on the treatment tank.

Through adopting above-mentioned technical scheme, when the rubble quantity in the collecting box is more, rolling mechanism carries out the rolling to the stay cord, and the stay cord drives and carries handle upward movement to can mention the top of rubble collection room with the collecting box, make things convenient for constructor to take out the rubble in the collecting box, so that the collecting box continues to collect the rubble.

Optionally, the winding mechanism comprises a winding frame fixed on the treatment tank, a winding roller for winding the pull rope is rotatably arranged on the winding frame, one end of the pull rope, far away from the lifting handle, is fixed on the winding roller, and a rotating handle is coaxially fixed on the winding roller.

Through adopting above-mentioned technical scheme, when rotating the twist grip, the twist grip drives the wind-up roll and rotates, and the wind-up roll rotates can realize the rolling or unreeling to the stay cord, simple structure, the realization of being convenient for.

Optionally, a first chute and a second chute are symmetrically arranged in the gravel collecting chamber, the first chute is arranged in an inclined manner, the bottom end of the first chute is arranged close to the partition plate, the top end of the first chute is communicated with the bottom end of the second chute and is in smooth transition, the second chute is arranged vertically, when the lifting handle is positioned at the bottom end of the first chute, the bottom of the collecting box is abutted against the bottom wall of the gravel collecting chamber, and the bottom end of the filter plate is positioned above the collecting box; when the lifting handle is positioned at the top end of the first sliding groove, the bottom end of the filter plate is positioned at one side of the collecting box close to the partition plate.

Through adopting above-mentioned technical scheme, through the setting of first spout and second spout, reduced the possibility that collecting box and rubble collect the inner wall of room and bump, and then the life of extension collecting box.

Optionally, the top of separation chamber is sealed, be equipped with a plurality of shower nozzle that is used for spraying high-pressure rivers in the separation chamber, the shower nozzle sets up towards the filter.

By adopting the technical scheme, the high-pressure water flow is sprayed towards the filter plate through the spray head, and on one hand, the high-pressure water flow can elutriate the broken stones, so that the content of slurry attached to the surfaces of the broken stones is reduced, and the recycling efficiency of the slurry is improved; on the other hand, can erode the punchhole on the filter, reduce the punchhole of filter and blockked up the possibility by mud, guarantee the filter effect of filter.

Optionally, be equipped with in the circulation chamber and be used for preventing that muddy water layering from appearing in the inside mud of self prevents subsiding the mechanism, prevent subsiding the mechanism and include that a plurality of rotations set up the (mixing) shaft in the circulation chamber, the (mixing) shaft sets up along the length direction who handles the pond, be equipped with a plurality of stirring vane on the (mixing) shaft, be equipped with a plurality of (mixing) shaft pivoted drive assembly of drive on the mud circulation pond.

Through adopting above-mentioned technical scheme, through the rotation of a plurality of (mixing) shafts, drive corresponding stirring vane and rotate, stirring vane rotates the disturbance effect that has strengthened mud in the circulation room, reduces the inside mud of circulation room and the phenomenon that muddy water layering appears, and then reduces the earth in the mud and appear the possibility of subsiding, improves the discharge efficiency of mud from the grout outlet.

Optionally, the driving assembly includes driving motor and driving pulley, driving motor is fixed in on the mud circulation pond, driving pulley and driving motor's the coaxial fixed of output, one of them the (mixing) shaft is worn out the lateral wall in mud circulation pond and is coaxially fixed with driven pulley, driven pulley passes through the belt with driving pulley and is connected, all the (mixing) shaft is worn out one side that mud circulation pond kept away from driven pulley and all is coaxially fixed with drive gear, all drive gear passes through the hold-in range and connects.

Through adopting above-mentioned technical scheme, driving motor rotates, drives driving pulley and rotates, and driving pulley drives driven pulley and rotates, and driven pulley drives one of them (mixing) shaft and rotates, and then drives the drive gear rotation that corresponds with this (mixing) shaft, and drive gear drives the hold-in range and rotates, and the hold-in range drives other (mixing) shafts and rotates, realizes that driving motor drives a plurality of (mixing) shaft pivoted purposes.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the broken stones are filtered out of the slurry through the filtering action of the filter plate, so that the content of the broken stones in the slurry flowing out of the slurry outlet is reduced, the possibility of deposition and blockage of an underground passage caused by cyclic utilization of the slurry is further reduced, and the construction efficiency is improved;

2. through the setting of first spout and second spout, reduced the possibility that collecting box and rubble collect the inner wall of room and bump, and then the life of extension collecting box.

3. Through the arrangement of the spray head, the high-pressure water flow is sprayed towards the filter plate through the spray head, on one hand, the high-pressure water flow can elutriate the broken stones, the content of slurry attached to the surfaces of the broken stones is reduced, and the recycling efficiency of the slurry is improved; on the other hand, can erode the punchhole on the filter, reduce the punchhole of filter and blockked up the possibility by mud, guarantee the filter effect of filter.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

FIG. 2 is a sectional view showing the internal structure of a treatment tank in the example of the present application.

Fig. 3 is a schematic structural diagram of an occlusion mechanism embodying an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a winding mechanism in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a settlement prevention mechanism in an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a drive assembly embodying an embodiment of the present application.

Description of reference numerals: 1. a treatment tank; 11. a partition plate; 111. removing broken stones; 12. a slurry circulation tank; 121. a filter plate; 122. a separation chamber; 1221. a pulp inlet; 1222. a spray head; 123. a circulation chamber; 1231. a pulp outlet; 13. a crushed stone collection chamber; 131. a collection box; 1311. lifting a handle; 1312. pulling a rope; 132. a first chute; 133. a second chute; 134. a sewage draining outlet; 2. a plugging mechanism; 21. a plugging plate; 22. a drive member; 3. a winding mechanism; 31. a winding frame; 32. a wind-up roll; 321. rotating the handle; 4. an anti-settling mechanism; 41. a stirring shaft; 411. a driven pulley; 412. a transmission gear; 4121. a synchronous belt; 42. a stirring blade; 43. a drive assembly; 431. a drive motor; 432. a drive pulley; 4321. a belt.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses mud circulating device of directional brill of non-excavation level. Referring to fig. 1 and 2, the slurry circulating device for trenchless horizontal directional drilling comprises a treatment tank 1, wherein a partition plate 11 is fixed on the inner wall of the treatment tank 1, and the treatment tank 1 is divided into a slurry circulating tank 12 and a broken stone collecting chamber 13 by the partition plate 11. The mud circulation tank 12 is internally and fixedly provided with a filter plate 121, and the filter plate 121 divides the mud circulation tank 12 into an upper separation chamber 122 and a lower circulation chamber 123. The slurry circulation tank 12 is provided with a slurry inlet 1221 and a slurry outlet 1231, the slurry inlet 1221 is communicated with the separation chamber 122, and the slurry outlet 1231 is communicated with the circulation chamber 123. The one end of room 13 is collected to being close to the rubble from keeping away from the rubble to filter 121 inclines down gradually to the one end that is close to rubble collection room 13, sets up the rubble escape way 111 that supplies the rubble on the filter 121 to pass through on the division board 11, and rubble escape way 111 is worn out to filter 121 bottom, is equipped with the shutoff mechanism 2 that is used for sealing rubble escape way 111 on the division board 11, and drain 134 that is used for the blowdown is seted up to the bottom of rubble collection room 13.

The slurry mixed with the crushed stone is injected into the treatment tank 1 from the slurry inlet 1221, at the moment, the crushed stone discharge passage 111 is closed, the crushed stone in the slurry is filtered by the filter plate 121, the crushed stone is left on the filter plate 121, and the slurry flows into the circulation chamber 123 through the filter plate 121 and is finally discharged from the slurry outlet 1231. When the rubble on the filter 121 is more, open plugging mechanism 2, the rubble on the filter 121 falls into rubble collection room 13 through rubble escape way 111, and after the rubble on the filter 121 was arranged completely, closed rubble escape way 111, continue to let in the mud of thoughtlessly having the rubble, can continue to filter mud. Through the filtering action of the filter plate 121, the broken stones are filtered out from the slurry, the content of the broken stones in the slurry flowing out from the slurry outlet 1231 is reduced, the possibility that the underground passage is deposited and blocked during the cyclic utilization of the slurry is further reduced, and therefore the construction efficiency is improved.

Referring to fig. 2 and 3, the plugging mechanism 2 includes a plugging plate 21 adapted to the crushed stone discharge passage 111, the plugging plate 21 is slidably disposed on one side of the partition plate 11 close to the crushed stone collecting chamber 13 along the vertical direction, the bottom end of the plugging plate 21 abuts against the top surface of the filter plate 121, a driving member 22 for driving the plugging plate 21 to ascend and descend is fixed on one side of the partition plate 11 close to the crushed stone collecting chamber 13, and the output end of the driving member 22 is fixed to the top end of the plugging plate 21. In this embodiment, the driving member 22 is a pneumatic push rod. The driving piece 22 drives the plugging plate 21 to lift, thereby realizing the opening and closing of the gravel discharge passage 111.

Referring to fig. 2, a collection tank 131 for collecting crushed stones falling from the filter plate 121 is provided in the crushed stone collection chamber 13. A lifting handle 1311 is fixedly mounted at the center of the top end of the collecting box 131, the lifting handle 1311 is arranged along the width direction of the treatment tank 1, a pull rope 1312 is connected to the center of the lifting handle 1311 in the length direction, and a winding mechanism 3 for winding the pull rope 1312 is arranged on the treatment tank 1.

Referring to fig. 4, the winding mechanism 3 includes a winding frame 31, the winding frame 31 is fixed on the top of the crushed stone collecting chamber 13, a winding roller 32 for winding a pulling rope 1312 is rotatably connected to the winding frame 31, one end of the pulling rope 1312 far from the lifting handle 1311 is fixed on the winding roller 32, and a rotating handle 321 is coaxially fixed on the winding roller 32.

When the rotating handle 321 is rotated, the rotating handle 321 drives the winding roller 32 to rotate, and the winding roller 32 rotates to wind or unwind the pull rope 1312. When the quantity of the broken stones in the collection box 131 is large, the rotating handle 321 is rotated to drive the winding roller 32 to wind the pull rope 1312, and the pull rope 1312 drives the lifting handle 1311 to move upwards, so that the collection box 131 can be lifted above the broken stone collection chamber 13, the broken stones in the collection box 131 can be conveniently taken out by constructors, and the collection box 131 can be conveniently collected continuously.

Referring to fig. 2, the inner wall of the crushed stone collecting chamber 13 is symmetrically provided with a first chute 132 and a second chute 133 for sliding at two ends of the lifting handle 1311, the first chute 132 is inclined, the bottom end of the first chute 132 is close to the partition plate 11, the top end of the first chute 132 is communicated with and smoothly transits to the bottom end of the second chute 133, the second chute 133 is vertically arranged, and the second chute 133 is communicated with the top end of the crushed stone collecting chamber 13. When the lifting handle 1311 is located at the bottom end of the first chute 132, the bottom of the collection box 131 abuts against the bottom wall of the crushed stone collection chamber 13, and the bottom end of the filter plate 121 is located above the collection box 131; when the lifting handle 1311 is located at the top end of the first chute 132, the bottom end of the filter plate 121 is located at the side of the collection box 131 close to the partition plate 11. Thus, the possibility of collision of the collection box 131 with the inner wall of the crushed stone collection chamber 13 is reduced by the arrangement of the first chute 132 and the second chute 133, and the service life of the collection box 131 is further prolonged. Furthermore, the lifting handle 1311 can be taken out of the second chute 133, which facilitates taking out the collection box 131 from the crushed stone collection chamber 13, and facilitates dumping out the crushed stones in the collection box 131.

Referring to fig. 2, the separation chamber 122 is closed at the top end, and a plurality of nozzles 1222 for spraying high pressure water are installed in the separation chamber 122, and the nozzles 1222 are disposed toward the filter plate 121. Therefore, the high-pressure water flow is sprayed towards the filter plate 121 through the spray head 1222, on one hand, the high-pressure water flow can wash the broken stones, the content of the slurry attached to the surfaces of the broken stones is reduced, and the recycling efficiency of the slurry is improved; on the other hand, can wash the eyelet on the filter 121, reduce the possibility that the eyelet of filter 121 is blockked up by mud, guarantee the filter effect of filter 121.

Referring to fig. 2 and 5, the circulation chamber 123 is provided with an anti-settling mechanism 4 for preventing mud and water from layering inside the circulation chamber, the anti-settling mechanism 4 includes a plurality of stirring shafts 41 arranged side by side along the length direction of the treatment tank 1, the stirring shafts 41 are rotatably connected with the side wall of the circulation chamber 123, the stirring shafts 41 are arranged along the length direction of the treatment tank 1, a plurality of stirring blades 42 are fixed on the stirring shafts 41, and the mud circulation tank 12 is provided with a driving assembly 43 for driving the stirring shafts 41 to rotate.

Referring to fig. 2, 5 and 6, the driving assembly 43 includes a driving motor 431 and a driving pulley 432, the driving motor 431 is fixed on the sidewall of the mud circulation tank 12, and the driving pulley 432 is coaxially fixed with the output end of the driving motor 431. One of the stirring shafts 41 penetrates through the side wall of the slurry circulation tank 12 and is coaxially fixed with a driven pulley 411, and the driven pulley 411 is connected with the driving pulley 432 through a belt 4321. All the stirring shafts 41 penetrate out of one side of the slurry circulation tank 12 far away from the driven belt wheel 411 and are coaxially fixed with transmission gears 412, and all the transmission gears 412 are connected through the same synchronous belt 4121.

When the driving motor 431 rotates, the driving pulley 432 is driven to rotate, the driving pulley 432 drives the driven pulley 411 to rotate, the driven pulley 411 drives one of the stirring shafts 41 to rotate, and further drives the transmission gear 412 corresponding to the stirring shaft 41 to rotate, the transmission gear 412 drives the synchronous belt 4121 to rotate, the synchronous belt 4121 drives the other stirring shafts 41 to rotate, and the purpose that the driving motor 431 drives the plurality of stirring shafts 41 to rotate is achieved. Through the rotation of a plurality of (mixing) shafts 41, drive corresponding stirring vane 42 and rotate, stirring vane 42 rotates and has strengthened the disturbance effect to mud in the circulation room 123, reduces the inside mud of circulation room 123 and appears the phenomenon of muddy water layering, and then reduces the earth in the mud and appear the possibility of subsiding, improves the discharge efficiency of mud from mud outlet 1231.

The implementation principle of the slurry circulating device for trenchless horizontal directional drilling in the embodiment of the application is as follows: when the device is used, slurry mixed with crushed stones is injected into the treatment tank 1 from the slurry inlet 1221, at the moment, the crushed stone discharge passage 111 is closed, the crushed stones in the slurry are filtered by the filter plate 121, the crushed stones are left on the filter plate 121, the slurry flows into the circulation chamber 123 through the filter plate 121, and finally is discharged from the slurry outlet 1231. When the rubble on the filter 121 is more, open stifled board 21, the rubble on the filter 121 falls into the collecting box 131 in rubble collection room 13 through rubble escape way 111 in, and the back is arranged to the rubble on the filter 121, seals rubble escape way 111, continues to let in the mud of thoughtlessly having the rubble, can continue to filter mud.

Through the filtering effect of the filtering plate 121, the broken stones are filtered out from the slurry, the content of the broken stones in the slurry flowing out from the slurry outlet 1231 is reduced, the possibility that the underground passage is deposited and blocked when the slurry is recycled is further reduced, and therefore the construction efficiency is improved.

When the quantity of the broken stones in the collection box 131 is large, the rotating handle 321 is rotated to drive the winding roller 32 to wind the pull rope 1312, and the pull rope 1312 drives the lifting handle 1311 to move upwards, so that the collection box 131 can be lifted above the broken stone collection chamber 13, the broken stones in the collection box 131 can be conveniently taken out by constructors, and the collection box 131 can be conveniently collected continuously.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a mud circulating device of directional brill of non-excavation level which characterized in that: including handling pond (1), be equipped with division board (11) in handling pond (1), division board (11) divide into mud circulation pond (12) and rubble collection room (13) with the circulation pond, be equipped with filter (121) in mud circulation pond (12), filter (121) divide into separating chamber (122) on upper strata and circulation room (123) of lower floor with mud circulation pond (12), be equipped with into thick liquid mouth (1221) and play thick liquid mouth (1231) on mud circulation pond (12), it communicates with separating chamber (122) to advance thick liquid mouth (1221), go out thick liquid mouth (1221) and circulation room (123) intercommunication, filter (121) from keeping away from the one end of collecting rubble room (13) to the one end that is close to rubble collection room (13) downward sloping gradually, be equipped with rubble calandria (111) that supplies the rubble on filter (121) on division board (11) to pass through, rubble calandria (111) is worn out to the bottom of filter (121), be equipped with shutoff mechanism (2) that are used for sealing in the rubble calandria (111) on division board (11).

2. The mud circulation device for trenchless horizontal directional drilling of claim 1 wherein: plugging mechanism (2) are including plugging plate (21), plugging plate (21) slide along vertical direction and set up in division board (11) and be close to one side of rubble collection room (13), the bottom of plugging plate (21) and the top surface butt of filter (121), be equipped with driving piece (22) that drive plugging plate (21) go up and down on division board (11).

3. The mud circulation device for trenchless horizontal directional drilling of claim 1, wherein: the gravel collecting chamber (13) is internally provided with a collecting box (131) used for collecting gravel falling from the filtering plates (121), the center of the top end of the collecting box (131) is provided with a lifting handle (1311), the lifting handle (1311) is provided with a pull rope (1312), and the treatment pool (1) is provided with a winding mechanism (3) used for winding the pull rope (1312).

4. The mud circulation device for trenchless horizontal directional drilling of claim 3, wherein: the winding mechanism (3) comprises a winding frame (31) fixed on the treatment pool (1), a winding roller (32) used for winding the pull rope (1312) is rotatably arranged on the winding frame (31), one end, far away from the lifting handle (1311), of the pull rope (1312) is fixed on the winding roller (32), and a rotating handle (321) is coaxially fixed on the winding roller (32).

5. The mud circulation device for trenchless horizontal directional drilling of claim 4 wherein: a first sliding groove (132) and a second sliding groove (133) which can be used for sliding at two ends of a lifting handle (1311) are symmetrically arranged in the gravel collecting chamber (13), the first sliding groove (132) is obliquely arranged, the bottom end of the first sliding groove (132) is arranged close to the partition plate (11), the top end of the first sliding groove (132) is communicated with the bottom end of the second sliding groove (133) and is in smooth transition, the second sliding groove (133) is vertically arranged, when the lifting handle (1311) is positioned at the bottom end of the first sliding groove (132), the bottom of the collecting box (131) is abutted against the bottom wall of the gravel collecting chamber (13), and the bottom end of the filter plate (121) is positioned above the collecting box (131); when the lifting handle (1311) is positioned at the top end of the first sliding chute (132), the bottom end of the filter plate (121) is positioned at one side of the collecting box (131) close to the partition plate (11).

6. The mud circulation device for trenchless horizontal directional drilling of claim 1, wherein: the top end of the separation chamber (122) is closed, a plurality of spray heads (1222) used for spraying high-pressure water flow are arranged in the separation chamber (122), and the spray heads (1222) are arranged towards the filter plate (121).

7. The mud circulation device for trenchless horizontal directional drilling of claim 1 wherein: be equipped with in circulation room (123) and be used for preventing that muddy water layering from preventing from subsiding mechanism (4) appear in the inside mud of self, prevent subsiding mechanism (4) and set up (mixing) shaft (41) in circulation room (123) including a plurality of rotations, the length direction setting of processing pond (1) is followed in (mixing) shaft (41), be equipped with a plurality of stirring vane (42) on (mixing) shaft (41), be equipped with on mud circulation pond (12) and drive a plurality of (mixing) shaft (41) pivoted drive assembly (43).

8. The mud circulation device for trenchless horizontal directional drilling of claim 7 wherein: the driving assembly (43) comprises a driving motor (431) and a driving belt wheel (432), the driving motor (431) is fixed on the slurry circulation tank (12), the driving belt wheel (432) is coaxially fixed with the output end of the driving motor (431), one stirring shaft (41) penetrates through the side wall of the slurry circulation tank (12) and is coaxially fixed with a driven belt wheel (411), the driven belt wheel (411) is connected with the driving belt wheel (432) through a belt (4321), all the stirring shafts (41) penetrate through one side, away from the driven belt wheel (411), of the slurry circulation tank (12) and are coaxially fixed with transmission gears (412), and all the transmission gears (412) are connected through a synchronous belt (4121).

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