CN110847339A - A directional dredging device for drainage pipes - Google Patents

Abstract

The invention discloses a directional dredging device for a drainage pipeline, and belongs to the technical field of pipeline dredging devices. The directional dredging device comprises a drill rod, and one end of the drill rod is connected with the directional drilling machine in a sliding mode. The drilling rod includes connecting rod, front end pole and rear end pole, and the inside of connecting rod is provided with the cavity that runs through the connecting rod, fixed connection and intercommunication between the adjacent connecting rod, the inside cavity open end of front end pole and rear end pole and adjacent connecting rod fixed connection to the inside cavity of front end pole and rear end pole and the inside cavity intercommunication of connecting rod. A drill bit is fixed on the outer surface of the front end head rod, a water outlet hole which is inclined towards the drill bit is formed in one end, close to the drill bit, of the front end head rod, and the water outlet hole is communicated with the water cavity. The inner cavity of the rear end rod is communicated with the high-pressure pump through a connecting pipe. The directional dredging device for the drainage pipeline with the structure can solve the problems of high dredging cost and low efficiency of the large-diameter drainage pipeline.

Description

A directional dredging device for drainage pipes

technical field

The invention belongs to the technical field of pipeline dredging devices, and in particular relates to a directional dredging device for large-diameter drainage pipelines.

Background technique

The urban drainage pipeline system is an indispensable and important municipal infrastructure of a modern city, and it is also a backbone project for urban water pollution prevention and urban water drainage, drainage and flood control. The drainage pipeline system is responsible for collecting and conveying the domestic sewage, industrial wastewater and atmospheric precipitation produced by urban production and living, and timely and reliably removing the collected domestic sewage, industrial wastewater and atmospheric precipitation, so as to prevent the urban area from being harmed by sewage and wastewater. , to avoid flood disasters in the road area during heavy rain, so as to provide people with a safe and comfortable production and living environment. In addition, the urban drainage pipeline system also enables the material circulation and energy flow of the urban ecosystem to proceed normally, thereby maintaining the ecological balance and ensuring the sustainable development of the city. However, with the economic development and the continuous expansion of the city scale, the deficiencies and problems of the urban drainage pipeline system are also emerging. For example, the poor drainage caused by siltation and blockage of pipelines will not only affect the daily life of residents, but also disrupt the normal rhythm of the entire city in severe cases, making it impossible for urban production and life to proceed normally.

Sedimentation problems in drainage pipes are mostly caused by sedimentation of sediment and suspended solids in the pipe system. After the sewage in the drainage pipe flows from the drainage branch pipe with a large slope into the drainage main pipe with a small slope, its flow rate decreases, and the sediment and suspended solids carried in the sewage are easily deposited in the main pipe with a small slope and a large diameter. , resulting in siltation of drainage pipes.

But at present, the main methods of dredging municipal drainage pipelines at home and abroad include high-pressure water jet dredging method, winch mechanical dredging method, water scouring dredging method, channel machine dredging method, dredging ball and impounding flushing door and other methods. Most of these methods are designed for the dredging of small-diameter drainage pipelines, and the dredging efficiency of large-scale drainage pipes and culverts is not high. When some technologies are applied to large-diameter drainage pipelines, there are high operating costs, insufficient dredging capacity, and secondary pollution. And can not adapt to the limitations of complex terrain conditions.

Therefore, the prior art requires manual downhole or other means to work, which has a problem of low efficiency, and it is necessary to study a directional dredging device for drainage pipelines.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a directional dredging device for drainage pipelines, which solves the problems of high cost and low efficiency of dredging large-diameter drainage pipelines.

In order to achieve the above object, the present invention provides a directional dredging device for drainage pipelines, which includes a drill pipe, one end of the drill pipe is slidably connected to a directional drilling machine, and the other end of the drill pipe is fixed with a drill bit; the drill pipe includes several connections in the middle. The rod, the front end rod and the rear end rod, the interior of the connecting rod is provided with a cavity passing through the connecting rod, the adjacent connecting rods are fixedly connected and communicated, and the front end rod and the rear end rod are provided with blind holes. The cavity of the structure, the open end of the inner cavity of the front end rod and the rear end rod is fixedly connected with the adjacent connecting rod, and the cavity inside the front end rod and the rear end rod communicates with the cavity inside the connecting rod A water cavity for accommodating high-pressure water is formed, a drill bit is fixed on the outer surface of the front end of the front end rod, and a water outlet hole inclined toward the drill bit is provided on the end of the front end rod, which is close to the drill bit, and the water outlet hole is communicated with the water cavity; The inner cavity is communicated with the high-pressure pump through the connecting pipe; the drill pipe is located on the central axis of the drainage pipe.

Further, the front end rod is provided with 2-3 water discharge holes, and the distance between each discharge water hole is 10-20cm; each row includes 3-4 water outlet holes, and the water outlet holes of each row are along the front end head. The cross-sections of the rods are evenly distributed.

Further, the distance between the first water discharge hole on the front end rod and the drill bit is 10-20 cm.

Further, the included angle between the drainage hole and the central axis of the front end rod is 110-150°.

Further, the lengths of the connecting rod, the front end rod and the rear end rod are not greater than the inner diameter of the drainage pipe.

Further, the directional drilling rig is located in a manhole upstream of the blocked drainage pipe section.

Further, an image sensor is provided on the drill pipe.

Further, the front end of the drill rod is provided with a positioning and guiding mechanism.

The beneficial effects of the present invention are:

(1) The dredging device of the present invention includes a drill pipe, the interior of the drill pipe is filled with high-pressure water, and the high-pressure water shoots high-pressure water flow through the water outlet hole at the top of the drill pipe, which is not only simple in structure, but also can clean the heavy, heavy and Bulk and sticky debris.

(2) The drill pipe and drill bit rotate at high speed under the action of the horizontal directional drilling rig, which drives the water flow in the pipeline to disturb, avoids the deposition of silt, and improves the dredging effect.

(3) The dredging device of the present invention is completed by machinery, which not only saves labor, but also improves the dredging efficiency.

The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of a directional dredging device for drainage pipelines according to the present invention.

reference number

1. Directional drilling rig; 2. Inspection well; 3. Drill pipe; 4. Drainage pipe; 5. Drill bit; 6. Drainage hole; 7. Front end rod; 8. Connecting rod; 9. Rear end rod; 10, Connecting pipe; 11. High pressure pump; 12. Water cavity.

Detailed ways

Example

The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the present embodiment takes the technical solution as the premise, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.

FIG. 1 is a schematic structural diagram of an embodiment of a directional dredging device for drainage pipelines according to the present invention. A directional dredging device for drainage pipelines includes a drill pipe 3, one end of the drill pipe 3 is slidably connected to a miniature horizontal directional drilling rig 1 through a sliding mechanism, and the sliding mechanism is the same as the structure on the existing drilling rig. A drill bit 5 is fixed to the other end of the drill rod 3 . The rotation of the horizontal directional drilling rig 1 drives the drill pipe 3 and the drill bit 5 to rotate synchronously. The rotation of the drill pipe 3 and the drill bit 5 makes the water in the drainage pipe 4 violently agitate, which can effectively avoid the sludge deposition and improve the dredging effect.

The drill rod 3 includes several connecting rods 8 in the middle, a front end rod 7 and a rear end rod 9 . The connecting rods 8 are connected by a detachable structure, such as a threaded connection, which is convenient for carrying and transporting the drill rod 3 , and the length of the drill rod 3 can be adjusted by adjusting the number of the connecting rods 8 . The interior of the connecting rod 8 is provided with a cavity for accommodating high-pressure water, and the internal cavities of adjacent connecting rods 8 are communicated with each other. The front end rod 7 and the rear end rod 9 are provided with a cavity with a blind hole structure, and the open end of the inner cavity of the front end rod 7 and the rear end rod 9 is detachably connected to the adjacent connecting rod 8 through threads. . The cavities in the front end rod 7 and the rear end rod 9 communicate with the cavity in the connecting rod 8 to form a water cavity 12 for accommodating high-pressure water. A drill bit 5 is detachably fixed on the outer surface of the front end of the front end rod 7 through screws, and the drill bit 5 is a solid drill bit 5 . One end of the front end rod 7 close to the drill bit 5 is provided with a water outlet hole inclined toward the drill bit 5 , and the water outlet hole communicates with the water cavity 12 . There are 2-3 rows of water outlet holes, and the distance between each outlet water hole is 10-20cm. Each row includes 3-4 water outlet holes, and the water outlet holes of each row are evenly distributed along the cross section of the front end rod 7 . The distance between the first water discharge hole on the front end rod 7 and the drill bit 5 is 10-20 cm, and the included angle between the drainage hole 6 and the central axis of the front end rod 7 is 110-150°.

The inner cavity of the rear end rod 9 is communicated with the high pressure pump 11 through the connecting pipe 10, the high pressure pump 11 is located above the inspection well 2, and the water inlet of the high pressure pump 11 is communicated with the water outlet of the waterwheel. The high-pressure pump 11 pressurizes the water in the waterwheel, enters the water cavity 12 inside the drill pipe 3 through the connecting pipe 10, and then shoots out through the water outlet hole at the end of the drill pipe 3 to clean the sludge in the drainage pipe 4 . The silt in the drainage pipe 4 is a weak silt, which has low requirements on the strength and rigidity of the drill pipe 3. Therefore, the connecting rod 8, the front end rod 7 and the rear end rod 9 that constitute the drill pipe 3 are made of light-weight materials. and the pipe wall of the connecting rod 8 is not easy to be too thick, so as to avoid the downward inclination of the drill rod 3 under the action of gravity. The front end of the drill pipe 3 is provided with a positioning and guiding mechanism, and the positioning and guiding mechanism is the probe rod used on the existing drill pipe 3 to ensure that the drill pipe 3 and the drill bit 5 are located on the central axis of the drainage pipe 4, so as to avoid the drill bit 5 to the drainage pipe. 4 cause damage.

The lengths of the connecting rod 8 , the front end rod 7 and the rear end rod 9 are not greater than the inner diameter of the drainage pipe 4 , which facilitates the disassembly of the drill rod 3 . In this embodiment, in order to facilitate mass production, the lengths of the connecting rod 8 , the front end rod 7 and the rear end rod 9 are 500 mm. When dredging, the directional drilling rig 1 must be placed in the inspection well 2 upstream of the blocked drainage pipe 4, so that the washed sludge can be drained away with the water in time to avoid secondary blockage.

As required, an image sensor can also be installed on the drill pipe 3, and the image sensor transmits the situation in the pipeline to the display device on the ground, so that the cleaning situation of the sludge inside the pipeline can be clearly grasped.

The operation process of the directional dredging device for drainage pipelines of the present invention is as follows: first, a miniature horizontal directional drilling rig is placed in the inspection well upstream of the blocked pipeline, the drill bit is installed at the front end of the drill pipe, and then the drilling rig is started to drill the drill pipe into the drainage pipeline. In the mud of the drilling rig, when the drill bit passes through the mud, the drilling is stopped; the high-pressure water pump is placed above the inspection well, and is connected to the internal water cavity of the drilling rig through the connecting pipe, the water wheel is connected to the water inlet of the high-pressure pump, and the water enters the high-pressure pump. After that, it is pressurized by a high-pressure pump, enters the drill pipe, and then shoots out through the inclined water outlet on the drill pipe. Then start the drilling rig, drive the drill pipe to rotate, and withdraw the drill pipe while rotating. Repeat the above process of drilling and withdrawing until the sludge in the pipeline is removed.

Therefore, the present invention adopts the drainage pipeline directional dredging device of the above structure, which can solve the problems of high cost and low efficiency of dredging large-diameter drainage pipelines.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still The technical solutions of the present invention may be modified or equivalently replaced, and these modifications or equivalent replacements cannot make the modified technical solutions depart from the spirit and scope of the technical solutions of the present invention.

Claims (8)

1. a drainage pipeline directional dredging device is characterized in that: comprise a drill pipe, one end of the drill pipe is slidably connected with the directional drilling machine, and the other end of the drill pipe is fixed with a drill bit; The end rod and the rear end rod, the interior of the connecting rod is provided with a cavity passing through the connecting rod, the adjacent connecting rods are fixedly connected and communicated, and the interior of the front end rod and the rear end rod is provided with a cavity with a blind hole structure. The open ends of the inner cavities of the front end rod and the rear end rod are fixedly connected with the adjacent connecting rods, and the cavities inside the front end rods and the rear end rods are communicated with the cavities inside the connecting rods to accommodate high pressure In the water cavity of the water, a drill bit is fixed on the outer surface of the front end of the front end rod, and the end of the front end rod close to the drill bit is provided with a water outlet hole inclined toward the drill bit, and the water outlet hole is communicated with the water cavity; the interior of the rear end rod is empty The cavity is communicated with the high-pressure pump through the connecting pipe; the drill pipe is located on the central axis of the drainage pipe. 2. A drainage pipeline directional dredging device according to claim 1, characterized in that: the front end rod is provided with 2-3 water discharge holes, and the distance between each discharge water hole is 10-20cm; The row includes 3-4 water outlet holes, and the water outlet holes of each row are evenly distributed along the cross section of the front end rod. 3 . The directional dredging device for drainage pipelines according to claim 2 , wherein the distance between the first drainage hole on the front end rod and the drill bit is 10-20 cm. 4 . 4 . The directional dredging device for drainage pipelines according to claim 1 , wherein the angle between the drainage hole and the central axis of the front end rod is 110-150°. 5 . 5 . The directional dredging device for a drainage pipeline according to claim 1 , wherein the length of the connecting rod, the front end rod and the rear end rod is not greater than the inner diameter of the drainage pipe. 6 . 6 . The directional dredging device for drainage pipelines according to claim 1 , wherein the directional drilling machine is located in the upstream inspection well of the blocked drainage pipeline section. 7 . 7 . The directional dredging device for drainage pipelines according to claim 1 , wherein an image sensor is arranged on the drill pipe. 8 . 8 . The directional dredging device for drainage pipelines according to claim 1 , wherein a positioning and guiding mechanism is provided at the front end of the drill pipe. 9 .

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