CN218235072U - Casing milling device and casing milling system - Google Patents

Abstract

The utility model discloses a cover mills device and cover and mills system, the cover mills the device and includes that sleeve, cover mill piece, mud motor and drilling rod. The sleeve is provided with a first through hole penetrating through the two opposite end parts, and the first through hole is used for allowing the pipe body to penetrate through the sleeve; the milling part is rotatably arranged at one end part of the sleeve; the mud motor is used for driving the milling part to rotate; the drill rod is arranged at the other end of the sleeve and provided with a liquid conveying channel, and the liquid conveying channel can convey liquid to the mud motor so as to drive the mud motor to drive the milling sleeve to rotate. The utility model has the advantages of, at the body in the removal in-process of soil body, the infusion passageway can be to the mud motor transport liquid in the sleeve, and drive mud motor drives the cover and mills a rotation to the completion is lax to the cutting of the soil body around the body, prevents the phenomenon of the body of soil body locking.

Description

Casing milling device and casing milling system

Technical Field

The utility model relates to a non-excavation construction technical field especially relates to a cover mills device and cover and mills system.

Background

With the wide application of the trenchless horizontal directional drilling construction technology in water supply, drainage, electric power, telecommunication, natural gas, petroleum and other flexible pipe body laying, in the pipe body back dragging process, because of reasons such as overlong distance, pore collapse, unqualified slurry, incomplete hole cleaning, quicksand geology and the like, an event that the pipe body is locked by the surrounding soil body is inevitably generated, and great economic loss is caused. Meanwhile, with the continuous development of cities, underground pipe bodies are increasingly arranged and complicated, so that underground space is reduced, new pipe bodies are difficult to arrange, and the old abandoned pipe bodies can damage the underground ecological environment.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art an at least defect, the utility model provides a shell mills device and shell mills device for it is lax to cut the soil body around the body, prevents that the phenomenon of locking body from appearing in the soil body.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a casing milling apparatus comprising:

the sleeve is provided with a first through hole penetrating through the two opposite end parts, and the first through hole is used for allowing the pipe body to penetrate through the sleeve;

the sleeve milling part is rotatably arranged at one end part of the sleeve;

the mud motor is used for driving the milling part to rotate;

the drilling rod is arranged at the other end of the sleeve and provided with a liquid conveying channel, and the liquid conveying channel can convey liquid to the slurry motor to drive the milling sleeve to rotate.

Further, the sleeve is provided with a liquid outlet channel, an outlet of the liquid outlet channel is arranged at one end of the sleeve, and the liquid outlet channel is used for allowing liquid flowing through the mud motor to flow out of the sleeve.

Furthermore, the number of the mud motors is more than two, and the more than two mud motors are circumferentially arranged on the sleeve at intervals.

Further, the number of drill rods corresponds to the number of mud motors, each drill rod being capable of driving a corresponding mud motor.

Furthermore, the milling device also comprises fasteners, and the fasteners are arranged on the drill rods so as to relatively fix the drill rods; and the number of the fasteners is multiple, and the fasteners are arranged at intervals along the axial direction of the drill rod.

Further, the mud motor comprises a stator and a rotor, the stator is arranged in the sleeve, the rotor is rotatably arranged in the stator, a gap is formed between the rotor and the stator, the liquid conveying channel can convey liquid to the gap, and the rotor can be driven to rotate by liquid flowing.

Furthermore, the milling part extends towards one side of the sleeve to form an annular clamping block, the sleeve is provided with a clamping groove and a connecting hole, the clamping groove and the connecting hole are matched with the clamping block, the clamping block is rotatably sleeved on the clamping groove, and the connecting hole enables the rotor to be exposed out of the clamping groove and connected with the clamping block so as to drive the clamping block to rotate.

Furthermore, the milling device further comprises a first gear and a second gear, the first gear is arranged on the rotor, the second gear is arranged on the fixture block, and the first gear is meshed with the second gear.

Further, the milling part comprises a drill bit, the drill bit is provided with a second through hole, the second through hole and the first through hole are coaxially arranged, and the circumference of the second through hole is larger than or equal to that of the first through hole.

The utility model also provides a system is milled to cover:

the shell milling device comprises the shell milling device according to any one of the embodiments: and (c) a second step of,

the booster pump is arranged on one side, far away from the sleeve, of the drill rod and used for conveying liquid in the liquid conveying channel to the mud motor to provide power.

To sum up, the utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model discloses a cover mills device cup joints the body through the sleeve, and telescopic one of which tip is provided with the cover and mills the piece, and another tip of telescopic still is equipped with the drilling rod, and the drilling rod can order about sleeve and cover and mill the axial displacement of piece along the body. The inner side of the drill rod is provided with a liquid conveying channel, the liquid conveying channel can convey liquid to the mud motor in the moving process of the pipe body in the soil body, the mud motor is driven to drive the milling part to rotate, so that cutting of the soil body around the pipe body is completed, and the phenomenon of soil body locking is prevented.

Drawings

Fig. 1 is an assembly schematic view of a milling device according to an embodiment of the present invention;

FIG. 2 isbase:Sub>A schematic cross-sectional view of the over-milling apparatus of FIG. 1 taken along section line A-A;

FIG. 3 is a schematic view of the assembly of the shell milling member of the shell milling apparatus of FIG. 1 as a saw blade;

fig. 4 is an exploded view of the shell milling apparatus of fig. 1.

Wherein the reference numerals have the following meanings:

10-a milling device; 100-a sleeve; 110-a first via; 120-liquid outlet channel; 130-card slot; 140-connecting hole; 200-milling a part; 210-a drill bit; 211 — a first via; 220-a saw blade; 230-a fixture block; 231-a second gear; 300-a mud motor; 310-a stator; 320-a rotor; 321-a first gear; 321-a profile structure; 330-gap; 400-drill pipes; 410-an infusion channel; 420-a fastener; 421-anchor ear.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The utility model provides a cover mills system, this cover mills system can cut lax to the soil body around the underground pipe body under the condition of not digging ground to realize the body in the removal in-process of the soil body, prevent that the body from being locked by the soil body, lead to the body to be difficult to the condition of removing in the soil body.

The present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the casing milling system comprises a casing milling device 10 and a booster pump (not shown), wherein the casing milling device 10 can convert hydraulic energy of liquid into mechanical energy and can cut soil around a pipe body by using the converted mechanical energy; the booster pump is a power source of the shell milling system and is used for providing power for the flow of liquid in the shell milling device 10. It is noted that the fluid within the casing milling system may be, but is not limited to, clear water, mud, clay-free flushing fluid, emulsions, foams, and the like.

Specifically, the casing milling apparatus 10 includes a casing 100, a casing mill 200, a mud motor 300, and a drill pipe 400. The sleeve 100 is provided with a first through hole 110 penetrating through the two opposite end portions, the first through hole 110 is used for allowing a pipe body to penetrate through the sleeve 100, that is, the sleeve 100 can be sleeved on the pipe body with the size matched with that of the first through hole 110; the milling part 200 is rotatably arranged at one end of the sleeve 100; the mud motor 300 is used for driving the milling sleeve 200 to rotate; the drill rod 400 is arranged at the other end of the sleeve 100, and the drill rod 400 can push the sleeve 100 and the milling part 200 to move along the axial direction of the pipe body; the drill pipe 400 is provided with a fluid feed channel 410, and the fluid feed channel 410 can feed fluid to the mud motor 300 to drive the mud motor 300 to rotate the milling set 200.

In one embodiment, an elastic gasket (not shown) is disposed on an inner wall of the first through hole 110, and the elastic gasket is capable of being pressed and deformed by a force. Through setting up the elastic gasket to make first through-hole 110 can supply the body of multiple size to wear to establish, and wear to locate the body wherein and can receive the support of elastic gasket, thereby keep first through-hole 110 and body coaxial setting.

In one embodiment, the milling unit 200 includes a drill bit 210, the drill bit 210 is provided with a second through hole 211, the second through hole 211 is coaxially arranged with the first through hole 210, and the circumference of the second through hole 211 is greater than or equal to the first through hole 110; i.e., the drill 210 is hollow, the drill 210 is disposed around the first through hole 110. During withdrawal of the tubular body from the ground, the drill bit 210 is mounted on the tubular body as is the sleeve 100, and the drill bit 210 can be driven by the mud motor 300 to rotate around the tubular body and cut loose the earth ahead of the tubular body. It should be noted that the drill 210 may not be a hollow drill, but may be a normal drill, the number of the drill 210 is plural, the plural drills 210 are circumferentially spaced on the sleeve 100 and are arranged around the first through hole 110, and in the process of loosening the soil mass, the plural drills 210 rotate simultaneously to cut the soil mass. In other embodiments, the milling unit 200 may include a saw blade 220 (as shown in fig. 3), the saw blade 220 is also disposed around the first through hole 110, during the process of pulling the tubular body from the ground, the saw blade 220 is sleeved on the tubular body like the sleeve 100, the saw blade 220 can be driven by the mud motor 300 to rotate around the tubular body and cut and loosen the soil on the side of the tubular body; alternatively, the milling unit 200 may include both the drill bit 210 and the saw blade 220.

With continued reference to fig. 2, in an embodiment, the mud motor 300 includes a stator 310 and a rotor 320, the stator 310 is disposed on the sleeve 100, a cavity is disposed in the sleeve 100 to serve as the stator 310, that is, the stator 310 is integrally formed with the sleeve 100, or the stator 310 is disposed on an outer wall of the sleeve 100; the rotor 320 is rotatably disposed in the stator 310, and a gap 330 is disposed between the rotor 320 and the stator 310, the liquid feeding channel 410 can feed liquid to the gap 330, and the rotor 320 can be driven to rotate by the liquid flow. Specifically, the outer surface of the rotor 320 has a profile 321, the liquid flowing through the profile 321 can drive the rotor 320 to rotate, so as to convert the hydraulic energy of the liquid into mechanical energy for rotating the rotor 320, and the hub 321 may be a spiral structure.

In one embodiment, the sleeve 100 is provided with a fluid outlet channel 120, the outlet of the fluid outlet channel 120 being provided at one end of the sleeve 100 (i.e. the end near the milling unit 200), the fluid outlet channel 120 being used for the fluid flowing through the mud motor 300 to flow out of the sleeve 100. The liquid in the liquid conveying channel 120 enters the gap 330 to drive the rotor 320, then leaves the sleeve 100 through the liquid outlet channel 120, and after the liquid leaves from the sleeve 100, the liquid is mainly sprayed to the sleeve milling part 200 accessory to perform hydraulic cutting and washing on the soil around the pipe body, so that the loosening effect of the sleeve milling device 10 on the soil body is improved; meanwhile, the milling part 200 is lubricated and cooled, so that the milling part 200 is prevented from being damaged due to overhigh temperature or overlarge resistance of the milling part 200 in the soil body cutting process. In addition, the sprayed liquid can also reduce the frictional resistance between the pipe body and the surrounding soil body, and has a wall protection effect on the cavity formed by cutting, so that hole wall collapse is prevented. In other embodiments, the outlet of the liquid outlet channel 120 may be provided at a side surface (not shown) of the sleeve 100, and the jetted liquid can perform hydraulic cutting and washing on the soil mass at the side surface of the sleeve 100, or the side surface of the sleeve 100 and the end portion near the milling part 200 are provided with the outlet of the liquid outlet channel 120; the liquid outlet channel 120 can also be provided with no outlet on the sleeve 100, and the liquid outlet through hole 120 directly flows back to the booster pump for pressurization through the drill rod 400.

Referring to fig. 4, in an embodiment, an annular fixture block 230 is extended from one side of the milling cutter 200 facing the sleeve 100, the sleeve 100 is provided with a fixture slot 130 and a connection hole 140 that are matched with the fixture block 230, the fixture block 230 is rotatably sleeved on the fixture slot 130, the connection hole 140 is disposed on a slot wall on a side surface of the fixture slot 130, the rotor 320 is exposed out of the fixture slot 130 through the connection hole 140, and the rotor 320 can drive the fixture block 230 to rotate, so that the milling cutter 200 rotates.

For example, in an embodiment, the milling device 10 further includes a first gear 321 and a second gear 231, the first gear 321 is disposed on the rotor 320, the second gear 231 is disposed on the fixture block 230, and the first gear 321 is engaged with the second gear 231. The rotor 320 and the latch 230 are driven by the gear, the rotor 320 can drive the first gear 321 to rotate after rotating, and the first gear 321 drives the second gear 231 to drive, so that the latch 230 rotates in the slot 130. In other embodiments, the transmission mode may be belt transmission (not shown), specifically, the rotor 320 is provided with a transmission wheel, the fixture block 230 is provided with a transmission belt, the transmission wheel abuts against the transmission belt, and the rotor 320 rotates to drive the transmission belt to rotate through the transmission wheel, so that the fixture block 230 rotates in the fixture groove 130; alternatively, the transmission may be a chain transmission (not shown).

In one embodiment, the number of mud motors 300 can be two or more, with two or more mud motors 300 circumferentially spaced about the sleeve 100. By arranging a plurality of mud motors 300, the milling sleeve 200 has a plurality of driving force sources in the circumferential direction, so that the driving effect of the mud motors 300 on the milling sleeve 200 can be improved, the stress points of the mud motors 300 and the milling sleeve 200 can be prevented from being concentrated at one position, and the connecting part between the mud motors 300 and the milling sleeve 200 is easily damaged.

In one embodiment, the number of drill rods 400 corresponds to the number of mud motors 300, and each drill rod 400 is capable of driving a corresponding mud motor 300. It is understood that the number of the drill rods 400 may be one, in which case the drill rods 400 are hollow and can be penetrated by a pipe body, and a plurality of fluid conveying channels 410 are provided in one drill rod 400 and can simultaneously convey fluid to a plurality of mud motors 300 to drive the mud motors 300 to operate. The number of drill rods 400 is one compared to the number of drill rods 400, which allows the overall size of drill rods 400 to be reduced, while the fluid feed channels 410 in drill rods 400 can be more easily and directly provided, and even if one of the fluid feed channels 410 of one drill rod 400 becomes clogged, another drill rod 400 can continue to feed fluid to mud motor 300.

In one embodiment, the casing milling device 10 further includes a fastener 420, the fastener 420 is disposed on the plurality of drill rods 400 to fix the plurality of drill rods 400 relative to each other; and the number of the fastening members 420 is plural, and the plural fastening members 420 are provided at intervals in the axial direction of the drill rod 400. The fastener 420 can be an annular hoop 421, the hoop 421 can be made of, but not limited to, steel, and one hoop 421 can be arranged every five meters in the axial direction of the drill rod 400 to limit the drill rods 400, so that the drill rod 400 is prevented from being twisted due to overlong length in the using process, and the overall rigidity is enhanced.

The utility model discloses a cover mills device 10, cup joints the body through sleeve 100, and one of them tip of sleeve 100 is provided with the cover and mills a 200, and another tip of sleeve 100 still is equipped with drilling rod 400, and drilling rod 400 can order about the body and the axial displacement that the body was followed to cover and mill a 200. The infusion channel 410 is arranged in the drill rod 400, and in the moving process of the pipe body in the soil body, the infusion channel 410 can convey liquid to the mud motor 300 in the sleeve 100 to drive the mud motor 300 to drive the milling sleeve 200 to rotate, so that cutting and loosening of the soil body around the pipe body are completed, and the phenomenon that the pipe body is locked by the soil body is prevented.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by combining the above technical features at will. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides a shell mills device which characterized in that: the method comprises the following steps:

the sleeve is provided with a first through hole penetrating through the two opposite end parts, and the first through hole is used for allowing the pipe body to penetrate through the sleeve;

the milling part is rotatably arranged at one end part of the sleeve;

the mud motor is used for driving the milling part to rotate;

the drilling rod is arranged at the other end of the sleeve and provided with a liquid conveying channel, and the liquid conveying channel can convey liquid to the slurry motor so as to drive the slurry motor to drive the milling part to rotate.

2. The shell milling apparatus of claim 1, wherein: the sleeve is provided with a liquid outlet channel, an outlet of the liquid outlet channel is arranged at one end of the sleeve, and the liquid outlet channel is used for allowing liquid flowing through the mud motor to flow out of the sleeve.

3. The shell milling apparatus of claim 1, wherein: the number of the mud motors is more than two, and the mud motors are circumferentially arranged on the sleeve at intervals.

4. The shell milling apparatus of claim 3, wherein: the number of drill rods is the same as the number of mud motors, and each drill rod can drive the corresponding mud motor.

5. The shell milling apparatus of claim 4, wherein: the sleeve milling device further comprises fasteners, and the fasteners are arranged on the drill rods so as to relatively fix the drill rods; and the number of the fasteners is multiple, and the fasteners are arranged at intervals along the axial direction of the drill rod.

6. The shell milling apparatus of claim 1, wherein: the mud motor comprises a stator and a rotor, the stator is arranged in the sleeve, the rotor is rotatably arranged in the stator, a gap is formed between the rotor and the stator, the liquid conveying channel can convey liquid to the gap, and the rotor can be driven to rotate by liquid flowing.

7. The shell milling apparatus of claim 6, wherein: the milling part extends towards one side of the sleeve to form an annular clamping block, the sleeve is provided with a clamping groove and a connecting hole, the clamping groove and the connecting hole are matched with the clamping block, the clamping block is rotatably sleeved on the clamping groove, and the connecting hole enables the rotor to be exposed out of the clamping groove and connected with the clamping block so as to drive the clamping block to rotate.

8. The shell milling apparatus of claim 7, wherein: the sleeve milling device further comprises a first gear and a second gear, the first gear is arranged on the rotor, the second gear is arranged on the clamping block, and the first gear is meshed with the second gear.

9. The shell milling apparatus of claim 1, wherein: the sleeve milling part comprises a drill bit, the drill bit is provided with a second through hole, the second through hole and the first through hole are coaxially arranged, and the circumference of the second through hole is larger than or equal to that of the first through hole.

10. A shell milling system is characterized in that: the method comprises the following steps:

the shell milling apparatus of any one of claims 1 to 9; and the number of the first and second groups,

the booster pump is arranged on one side, far away from the sleeve, of the drill rod and used for conveying liquid in the liquid conveying channel to the mud motor to provide power.

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