CN109610629B - Dredging device and dredging method for sewage pipe network - Google Patents
Dredging device and dredging method for sewage pipe network Download PDFInfo
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- CN109610629B CN109610629B CN201811612998.5A CN201811612998A CN109610629B CN 109610629 B CN109610629 B CN 109610629B CN 201811612998 A CN201811612998 A CN 201811612998A CN 109610629 B CN109610629 B CN 109610629B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
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Abstract
A method for dredging a sewage pipe network by using a sewage pipe network dredging device comprises the steps that a high-pressure flushing vehicle is butted with a water inlet pipe through a hose, then the dredging device is placed into a sewage pipe, a water pump of the high-pressure flushing vehicle is started, water enters the dredging device, the whole conveying device is driven by a rotary water spraying mechanism to move in the sewage pipe, meanwhile, a drilling mechanism is driven by the water through a hydraulic motor to rotate, and blockage in the sewage pipe is damaged by the rotary drilling mechanism; when the blockage is too tight, the blockage limits the rotation of the drilling mechanism, the high-pressure washing vehicle is closed, the dredging device is pulled out for a certain distance backwards by the hose, then the high-pressure washing vehicle is opened again, the blockage is impacted by the moving and rotating drilling mechanism, and the operation is repeated for many times. The invention can dredge and clean the pipeline efficiently and clean the blockage.
Description
Technical Field
The invention relates to a dredging device and a dredging method for a sewage pipe network.
Background
The sewage pipe is the important component in city, collect sewage through the sewage pipe network, reach emission standard after the processing, but along with the long-time use of sewage pipe, some blockages can be deposited in the sewage pipe, these blockages greatly influence sewage discharge amount, current clear stifled mode of sewage pipe network is mainly that the workman goes down in the well, handheld hose, the high pressure water that utilizes the high pressure flushing car to transport to come washes the pipeline, this kind of washing mode is not only high in labor strength, and the flushing effect is general, in addition when seriously blockking up the position in the pipeline, the flushing pipe is difficult to pass the jam department, generally use the glass steel cable to poke repeatedly or draw the blockage, this kind of mediation mode strength is less, the mediation effect is not very good.
Disclosure of Invention
The invention aims to provide a dredging device and a dredging method for a sewage pipe network, which can dredge and clean pipelines efficiently and clean blockages.
In order to solve the above problems, the technical solution to be solved by the present invention is:
the sewage pipe network dredging device comprises a pipe shell, wherein two ends of the pipe shell are respectively connected with a rotary water spraying mechanism and a hydraulic motor, the outer wall of the pipe shell is provided with at least four groups of supporting mechanisms, the supporting mechanisms of each group are uniformly distributed around the axis of the pipe shell, and one end of the hydraulic motor is connected with a drilling mechanism;
the rotary water spraying mechanism comprises: the water-saving device comprises a central shaft connected to one end of a pipe shell, wherein a water inlet pipe and a water drain hole are arranged in the central shaft, the two ends of the water inlet pipe are respectively communicated with a water inlet of a hydraulic motor and a hose, a water outlet of the hydraulic motor is communicated with the pipe shell, a rotating sleeve is sleeved outside the central shaft and is connected with the central shaft through a plurality of bearings, a circle of cutting groove is arranged in the rotating sleeve, one end of the water drain hole is communicated with the cutting groove, the other end of the water drain hole is communicated with the pipe shell, a ring pipe is sleeved outside the rotating sleeve and is fixedly connected with the rotating sleeve through a plurality of water outlet pipes, the two ends of each water outlet pipe are respectively communicated;
a support mechanism: the device comprises a plurality of cylinder sleeves fixedly connected to a tube shell, wherein each cylinder sleeve is internally provided with a piston and a piston rod, one end of each piston rod is fixedly connected with a top plate, a plurality of rollers are arranged on the top plate, and the bottoms of the cylinder sleeves are communicated with the tube shell;
drilling and taking mechanism: the conical rotating shaft is connected to one end of an output shaft of the hydraulic motor, and the conical rotating shaft is fixedly connected with a helical blade.
The drilling mechanism further comprises a counterweight plate fixedly connected to one end of the output shaft of the hydraulic motor, and the conical rotating shaft is connected to the counterweight plate.
Be connected with many on the weight plate and get rid of the pole, each gets rid of when pole round weight plate axis evenly distributed, is equipped with a plurality of hemispheric archs on getting rid of the pole.
A method for dredging a sewage pipe network by using a sewage pipe network dredging device comprises the steps that a high-pressure flushing vehicle is butted with a water inlet pipe through a hose, then the dredging device is placed into a sewage pipe, a water pump of the high-pressure flushing vehicle is started, water enters the dredging device, the whole conveying device is driven by a rotary water spraying mechanism to move in the sewage pipe, meanwhile, a drilling mechanism is driven by the water through a hydraulic motor to rotate, and blockage in the sewage pipe is damaged by the rotary drilling mechanism; when the blockage is too tight, the blockage limits the rotation of the drilling mechanism, the high-pressure washing vehicle is closed, the dredging device is pulled out for a certain distance backwards by the hose, then the high-pressure washing vehicle is opened again, the blockage is impacted by the moving and rotating drilling mechanism, and the operation is repeated for many times.
The invention has the technical effects that:
1. after the high-pressure flushing vehicle pumps high-pressure water into the dredging device through the hose, water utilizes the whole conveying device of rotatory water spray mechanism drive to remove in the sewage pipe to the drive bores and gets the mechanism rotatory, and rotatory brill gets the mechanism and bores to get the destruction to the plug in the sewage pipe, can evenly wash the sewage pipe inner wall by rotatory rivers of rotatory water spray mechanism spun simultaneously, and not only the dredging efficiency is high, and it is effectual to dredge moreover.
2. Because the supporting mechanism can stretch out and draw back, the workman can be without going into the well, just can be very light put into the sewage pipe with pull throughs, the high-pressure bath car fills into high-pressure water, and the supporting mechanism independently hugs closely the sewage pipe inner wall, reduces the friction between supporting device and the sewage pipe, realizes the quick travel of pull throughs in the sewage pipe, improves mediation efficiency, can let rotatory water spray mechanism be located the sewage pipe center simultaneously, makes sewage pipe inner wall wash by water even, improves the sewage pipe cleaning performance.
3. The spiral cone formed by the conical rotating shaft and the spiral blades is adopted in the drilling mechanism, so that the whole dredging device can drill into a blockage of a sewage pipe under the traction of the spiral force by utilizing the spiral force generated by the rotary spiral shaft, and meanwhile, the rotary water spraying mechanism is assisted to drive the dredging device to move forwards, so that the blockage clearing effect is improved.
4. When the dredging device is used for repeatedly impacting the blockage, the rotary balancing weight and the throwing rod generate inertia force to stir the blockage, so that the blockage is rapidly refined in a large area.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic front view of the present invention,
FIG. 2 is a schematic cross-sectional view of the present invention,
figure 3 is a front view of the drilling mechanism of the present invention,
FIG. 4 is a schematic perspective view of the rotary water spraying mechanism of the present invention,
FIG. 5 is a partial enlarged structural view of the rotary water spraying mechanism of the present invention,
fig. 6 is a schematic structural view of the present invention in practice.
In the figure: the device comprises a pipe shell 1, a hydraulic motor 2, a rotary water spraying mechanism 3, a supporting mechanism 4, a drilling mechanism 5, a sewage pipe 6, a plug 7, a pipe coiling disc 8, a rotary sleeve 31, a central shaft 32, a ring pipe 33, a water spraying pipe 34, a water inlet pipe 35, a cutting groove 36, a water outlet pipe 38, a water discharging hole 37, a bearing 39, a cylinder sleeve 41, a piston rod 42, a top plate 43, a roller 44, a piston 45, a conical rotating shaft 51, a spiral blade 52, a balance weight disc 53, a swinging rod 54, a protrusion 55, a conical hole 71 and a hose 81.
Detailed Description
As shown in fig. 1 to 5, the dredging device for sewage pipe network comprises a pipe shell 1, wherein two ends of the pipe shell 1 are respectively connected with a rotary water spraying mechanism 3 and a hydraulic motor 2, at least four groups of supporting mechanisms 4 are arranged on the outer wall of the pipe shell 1, each group of supporting mechanisms 4 are uniformly distributed around the axis of the pipe shell 1, and one end of the hydraulic motor 2 is connected with a drilling mechanism 5;
the rotary water spraying mechanism 3: the water supply device comprises a central shaft 32 connected to one end of a pipe shell 1, wherein a water inlet pipe 35 and a water discharge hole 37 are arranged in the central shaft 32, two ends of the water inlet pipe 35 are respectively communicated with a water inlet and a hose of a hydraulic motor 2, a water discharge hole of the hydraulic motor 2 is communicated with the pipe shell 1, a rotating sleeve 31 is sleeved outside the central shaft 32, the rotating sleeve 31 is connected with the central shaft 32 through a plurality of bearings 39, a circle of cutting groove 36 is arranged in the rotating sleeve 31, one end of the water discharge hole 37 is communicated with the cutting groove 36, the other end of the water discharge hole is communicated with the pipe shell 1, a ring pipe 33 is sleeved outside the rotating sleeve 31, the ring pipe 33 is fixedly connected with the rotating sleeve 31 through a plurality of water outlet pipes 38, two ends of each water outlet pipe 38 are respectively communicated with the cutting groove 36;
the supporting mechanism 4: the device comprises a plurality of cylinder sleeves 41 fixedly connected to a pipe shell 1, wherein a piston 45 and a piston rod 42 are arranged in each cylinder sleeve 41, one end of each piston rod 42 is fixedly connected with a top plate 43, a plurality of rollers 44 are arranged on the top plate 43, and the bottoms of the cylinder sleeves 41 are communicated with the pipe shell 1;
the drilling mechanism 5: the conical rotating shaft 51 is connected to one end of the output shaft of the hydraulic motor 2, the helical blade 52 is fixedly connected to the conical rotating shaft 51, and the conical rotating shaft 51 and the helical blade 52 form a helical cone.
The working process and the working principle of the invention are as follows:
as shown in fig. 6, a water pipe of a high-pressure flushing vehicle (not shown in the figure of the high-pressure flushing vehicle) is communicated with one end of the pipe coiling disc 8, a hose 81 wound on the pipe coiling disc 8 is communicated with the water inlet pipe 35, then a worker lifts the dredging device from the sewage well into the sewage pipe 6 through a rope, and then the water pump is started, water in the water pump enters the hydraulic motor 2 from the water inlet pipe 35, the hydraulic motor 2 drives the spiral cone to rotate, water discharged by the hydraulic motor 2 enters the pipe shell 1, water in the pipe shell 1 enters each cylinder sleeve 41, each piston 45 is pushed to move, each roller 44 is attached to the inner wall of the sewage pipe 6, and the rotary water spraying mechanism 3 is ensured to be positioned at the center of the sewage pipe 6; then the water in the shell 1 enters the cutting groove 36 of the rotary sleeve 31 through the water discharge hole 37, and then passes through the water outlet pipe 38 and the circular pipe 33, and is sprayed out from each spray pipe 34, as shown in fig. 4, because each spray pipe 34 inclines towards the direction far away from the axis of the circular pipe 33 and is uniformly distributed around the axis of the circular pipe 33 in a spiral shaft manner, the reaction force generated by the spraying water can drive the rotary sleeve 31 to rotate on the central shaft 32, meanwhile, the water sprayed out from each spray pipe 34 tangentially impacts the inner wall of the sewage pipe 6 in a spiral horn shape, the pushing device moves in the sewage pipe 6 and cleans the inner wall of the sewage pipe 6, when the dredging device meets the blockage 7, the rotating spiral cone digs into the blockage 7 to crush and decompose the blockage 7, and the dredging device is pulled to move forwards.
The drilling mechanism 5 further comprises a weight plate 53 fixedly connected to one end of the output shaft of the hydraulic motor 2, and the conical rotating shaft 51 is connected to the weight plate 53. When a tight blockage 7 is met, when the spiral cone cannot drill into the blockage 7, the water pump of the high-pressure flushing vehicle can be closed, the dredging device is pulled out for a certain distance by using the hose 81, then the high-pressure flushing vehicle is opened again, the dredging device is made to move forwards again, the dredging device impacts the blockage 7 by using inertial force, and the repeated impact is carried out until the blockage 7 is thoroughly dredged. The counterweight plate 53 functions as: when the spiral cone impacts the plug 7, the kinetic energy of the spiral cone can be improved by utilizing the flywheel effect generated by the counterweight plate 53, so that the spiral cone has enough kinetic energy to drill the plug 7, and the crushing effect on the plug 7 is improved.
The weight plate 53 is connected with a plurality of swing rods 54, the swing rods 54 are uniformly distributed around the axis of the weight plate 53, and the swing rods 54 are provided with a plurality of hemispherical protrusions 55. As shown in fig. 5, when the plug 7 is large in size, after the dredging device impacts the plug 7 for the first time, the spiral cone leaves a tapered hole 71 on the plug 7, the plug 7 around the tapered hole 71 still exists, and when the plug 7 is impacted for the second time, the dredging device is obstructed by the plug 7 around the tapered hole to affect the secondary impact, so that a plurality of swinging rods 54 are arranged, the rotating swinging rods 54 and the protrusions 55 are used for grinding and crushing the plug 7 around the tapered hole, the crushing area is increased, and the crushing effect is improved.
Claims (2)
1. Sewer pipe network pull throughs, its characterized in that: the device comprises a pipe shell (1), wherein two ends of the pipe shell (1) are respectively connected with a rotary water spraying mechanism (3) and a hydraulic motor (2), the outer wall of the pipe shell (1) is at least provided with four groups of supporting mechanisms (4), each group of supporting mechanisms (4) are uniformly distributed around the axis of the pipe shell (1), and one end of the hydraulic motor (2) is connected with a drilling mechanism (5);
rotary water spraying mechanism (3): comprises a central shaft (32) connected with one end of a pipe shell (1), a water inlet pipe (35) and a drain hole (37) are arranged in the central shaft (32), two ends of the water inlet pipe (35) are respectively communicated with a water inlet and a hose of a hydraulic motor (2), a drain hole of the hydraulic motor (2) is communicated with the pipe shell (1), a rotary sleeve (31) is sleeved outside the central shaft (32), the rotary sleeve (31) is connected with the central shaft (32) through a plurality of bearings (39), a circle of cutting groove (36) is arranged in the rotary sleeve (31), one end of the drain hole (37) is communicated with the cutting groove (36), the other end of the drain hole is communicated with the pipe shell (1), a ring pipe (33) is sleeved outside the rotary sleeve (31), the ring pipe (33) is fixedly connected with the rotary sleeve (31) through a plurality of water outlet pipes (38), two ends of each water outlet pipe (38) are, the water spray pipes (34) are inclined to the direction far away from the axis of the ring pipe (33) and are uniformly distributed around the axis of the ring pipe (33) in a spiral shaft manner;
support mechanism (4): the device comprises a plurality of cylinder sleeves (41) fixedly connected to a pipe shell (1), wherein a piston (45) and a piston rod (42) are arranged in each cylinder sleeve (41), one end of each piston rod (42) is fixedly connected with a top plate (43), a plurality of rollers (44) are arranged on the top plate (43), and the bottoms of the cylinder sleeves (41) are communicated with the pipe shell (1);
drilling mechanism (5): a conical rotating shaft (51) connected to one end of an output shaft of the hydraulic motor (2), wherein a helical blade (52) is fixedly connected to the conical rotating shaft (51); the drilling mechanism (5) further comprises a counterweight plate (53) fixedly connected to one end of an output shaft of the hydraulic motor (2), and the conical rotating shaft (51) is connected to the counterweight plate (53); a plurality of throwing rods (54) are connected to the balance weight disc (53), the throwing rods (54) are evenly distributed around the axis of the balance weight disc (53), and a plurality of hemispherical bulges (55) are arranged on the throwing rods (54).
2. A method of dredging sewer pipes using the sewer network dredging device of claim 1, wherein: the high-pressure flushing vehicle is butted with a water inlet pipe (35) through a hose, then the dredging device is placed into a sewage pipe, a water pump of the high-pressure flushing vehicle is started, water enters the dredging device, the whole conveying device is driven by the water through a rotary water spraying mechanism (3) to move in the sewage pipe, meanwhile, the drilling mechanism (5) is driven by the water through a hydraulic motor (2) to rotate, and the blockage in the sewage pipe is damaged by the rotary drilling mechanism (5); when the blockage is too tight, the blockage limits the rotation of the drilling mechanism (5), the high-pressure washing vehicle is closed, the dredging device is pulled out for a distance backwards by the hose, then the high-pressure washing vehicle is opened again, the blockage is impacted by the moving and rotating drilling mechanism (5), and the process is repeated for multiple times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612998.5A CN109610629B (en) | 2018-12-27 | 2018-12-27 | Dredging device and dredging method for sewage pipe network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612998.5A CN109610629B (en) | 2018-12-27 | 2018-12-27 | Dredging device and dredging method for sewage pipe network |
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| Publication Number | Publication Date |
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| CN109610629A CN109610629A (en) | 2019-04-12 |
| CN109610629B true CN109610629B (en) | 2020-10-30 |
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| CN201811612998.5A Active CN109610629B (en) | 2018-12-27 | 2018-12-27 | Dredging device and dredging method for sewage pipe network |
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| CN113931292A (en) * | 2021-09-27 | 2022-01-14 | 宁波绿沁生态科技有限公司 | Sewage pipe network dredging device and using method thereof |
| CN114618842A (en) * | 2022-02-15 | 2022-06-14 | 安徽众联建设工程有限公司 | Municipal pipeline dredging mechanism with pipeline protection effect |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3427371A1 (en) * | 1984-07-25 | 1986-02-06 | Klaus Dieter 6456 Langenselbold Wendler | Process and device for cleaning straight domestic sewer pipes of approximately 100-150 mm diameter, in particular with penetrated roots and residues of sealing compositions |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002119934A (en) * | 2000-10-12 | 2002-04-23 | Yutaka Kiko Kk | Wall surface cleaning method |
| CN201901939U (en) * | 2010-11-19 | 2011-07-20 | 无锡职业技术学院 | Spray head for dredging sewer with impeller |
| CN203096919U (en) * | 2012-12-28 | 2013-07-31 | 武汉新光专用汽车制造有限公司 | Waterpower rotary cutting sprayer |
| CN106049659B (en) * | 2016-08-01 | 2018-07-03 | 黄河科技学院 | High-pressure water jet spiral advance and retreat formula pipe dredging device |
| CN206396878U (en) * | 2016-09-06 | 2017-08-11 | 黄河科技学院 | Urban discharging pipeline blocking Dredge drill bit |
-
2018
- 2018-12-27 CN CN201811612998.5A patent/CN109610629B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3427371A1 (en) * | 1984-07-25 | 1986-02-06 | Klaus Dieter 6456 Langenselbold Wendler | Process and device for cleaning straight domestic sewer pipes of approximately 100-150 mm diameter, in particular with penetrated roots and residues of sealing compositions |
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