CN111962479B

CN111962479B - Sweeping dredging type anti-blocking farmland irrigation channel

Info

Publication number: CN111962479B
Application number: CN202010745237.8A
Authority: CN
Inventors: 钱进; 刘寅; 陆卞和; 陈圆圆
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2022-03-22
Anticipated expiration: 2040-07-29
Also published as: CN111962479A

Abstract

The invention relates to a sweeping and dredging type anti-blocking farmland irrigation channel, which particularly comprises an impermeable layer arranged on the inner side of the channel, a sweeping and dredging system consisting of a fan and a compound sweeping pipeline, a mud storage surface connected with a vertical mud conveying pipe, a mud discharge tail pipe, an automatic intermittent mud discharge pump, a rotary drum type grid connected with a mud discharge groove pipe and a real-time monitoring system consisting of a force sensor and a flow velocity monitoring panel. The automatic dredging device has the advantages of using full-mechanized design, saving manpower, having high dredging efficiency, effectively intercepting sundries which are difficult to settle, having a real-time monitoring system and being convenient for workers to adjust the operation mode.

Description

Sweeping dredging type anti-blocking farmland irrigation channel

Technical Field

The invention relates to a blowing dredging type anti-blocking farmland irrigation channel, belonging to the technical field of farmland water supply and drainage and channel dredging.

Background

The farmland irrigation channel is the key point of agricultural hydraulic engineering facility construction, and the adoption of the scientific and suitable farmland irrigation channel is beneficial to improving the engineering efficiency and saving water. In the past, with the continuous development of agricultural water conservancy projects, a farmland irrigation channel is an important building in agricultural water conservancy construction, and the main water delivery mode of farmland irrigation in China is gradually changed into channel delivery. The normal water delivery and irrigation benefits of the farmland are influenced to a certain extent by the quality of the farmland irrigation channel. The reasonable planning and design of the irrigation channel is one of the important links for ensuring the irrigation benefits of the hydraulic engineering.

At present, irrigation district channels in most agricultural irrigation systems are earth ditches, and the phenomena of unstable canal dikes, channel collapse and channel leakage sometimes occur on the premise of not effectively lining the irrigation district channels. Even the irrigation channels in some rural areas are built for a long time, and the sludge blockage is serious. If the irrigation channel is seriously silted and blocked by silt, the contradiction of water use between upstream and downstream users is often caused, which is particularly shown in upstream flood irrigation and downstream farmland irrigation without water, and the irrigation efficiency is greatly reduced. However, most of the existing solutions for solving the problem of sludge blockage in farmland irrigation channels in China adopt manual dredging, and the solutions consume a large amount of manpower and time and cannot guarantee normal dredging in the channels for a long time, so that channel blockage is difficult to fundamentally solve. In a word, the problem of sludge blockage of the existing farmland irrigation channel is serious, and no ideal solution is provided.

In the prior art, few complete devices or designs which can automatically and fully mechanically treat the sludge without manpower are available. The invention discloses a channel dredging device for agricultural hydraulic engineering, which has the advantages that the water filtering speed is improved by utilizing the absorption action of a pump machine, the dredging efficiency is increased, and meanwhile, the water filtering looped network is fixed through two fixing clamp rings, so that the device is higher in stability during operation. However, the patent still needs to manually install, place and operate the dredging device and needs to timely collect and clean the sludge in the dredging ship in the using process. In the actual application process, the device for replacing manual dredging with mechanical dredging needs to adjust the operation process according to the actual conditions as far as possible, reduce the operation power in a more reasonable mode or select an intermittent operation mode and other energy-saving modes. Current equipment has less can realize energy-conserving purpose according to actual conditions adjustment operating power, like the utility model patent of patent publication No. CN210177471U discloses a cleaning device of field irrigation channel, its advantage can salvage the operation and carry debris to the case that gathers materials through the conveyer belt to the pasture and water, harmful object and rubbish that cut off, and the worker of being convenient for concentrates the clearance. However, the patent cannot adjust the operation mode, and is difficult to adjust channels with different sizes. The technical scheme can not monitor the dredging condition in the channel in real time and is difficult to adjust the running mode of the dredging device without manual condition. Therefore, in the technical aspect of dredging of farmland channels, workers need a fully-mechanized, real-time-monitoring and timely-operation-mode-adjusting efficient dredging device.

Disclosure of Invention

The invention aims to make up the defects in the prior art and provides a sweeping dredging type anti-blocking farmland irrigation channel. The invention aims to solve the problem of blockage caused by silt deposition of the traditional irrigation channel, overcomes the difficulties of time consumption, labor consumption and low efficiency caused by manual dredging on the technical level, monitors the dredging condition in the channel in real time through the monitoring system arranged on the channel, and can provide workers to adjust the operation mode of the channel in time. The full-mechanized dredging machine has the advantages of full mechanization, manpower-free, high dredging efficiency, science, energy conservation, convenience in management and the like.

The technical solution of the invention is as follows: a sweeping and dredging type anti-blocking farmland irrigation channel structurally comprises an impermeable layer 1, a fan 2, a compound sweeping pipeline 3, a mud storage surface 4, a vertical mud conveying pipe 5, a mud discharging tail pipe 6, an automatic intermittent mud discharging pump 7, a slag discharging groove pipe 8, a rotary drum type grid 9, a force sensor 10 and a flow velocity monitoring panel 11. The fan 2 is connected with the compound blowing pipeline 3 through a ventilation pipeline, the vertical mud conveying pipe 5 is communicated with a mud storage surface 4 and then connected with a mud discharge tail pipe 6, and the rotary drum type grid 9 is connected with a slag discharge groove pipe 8.

The impermeable layer 1 is arranged on the inner side of the channel and is arranged in a U shape along the channel, and the material is a high molecular compound (such as a polyethylene film with the thickness of 0.4 mm) or a common impermeable geomembrane with the thickness of 3 mm.

The fan 2 is arranged on the lower side of the U-shaped channel, and the rotating speed or power of the fan is selected according to the specific channel scale.

The compound purging pipelines 3 are arranged on the upper side and the lower side of the channel, and the compound purging pipelines 3 are communicated with the fan 2 to supply air and purge the surface of the channel, so that sludge is gathered on the sludge storage surface 4.

Hold mud face 4 and arranged and hold mud ditch 41, hold and arrange in the mud ditch 41 and receive mud hole 42, receive mud hole 42 diameter and set up to 100mm, receive mud hole 42 intercommunication vertical mud pipe 5, play and receive mud discharging effect. Automatic intermittent type formula sludge pump 7 general operating time is 15mins, and the down time interval sets up to 40mins, and such running mode is favorable to this kind of channel to possess enough time to subside the silt of storing irrigation water and in time discharge, improves the operating efficiency. The staff can adjust the length of work or downtime according to the actual application.

The rotary drum type grating 9 adopts a curved surface grating, a motor, a drum barrel, a flushing water pipe and the like are arranged in the rotary drum type grating, and sundries which are difficult to settle, such as aquatic weeds and the like in irrigation water in a channel, are treated.

The force sensor 10 is arranged on the wall of the channel, and the line is communicated with a flow rate monitoring panel 11 to monitor the flow rate of water in the channel and the aeration purging condition in real time.

The invention has the beneficial effects that:

firstly, the invention does not need manpower and adopts a fully-mechanized operation mode. The channel integrates the sweeping, silting, discharging and monitoring processes of sediment in irrigation water, and meanwhile, the overall design layout of the channel can be adjusted and changed according to the field conditions, so that the manpower and financial resources are saved.

Compared with the traditional earth canal or mortar canal, the canal of the invention is lined by cast-in-place concrete in consideration of the integral seepage-proofing performance and stability of the canal. The traditional earth canal is easy to collapse or leak in a large area, and the mortar joint treatment is difficult and easy to leak. In order to solve the seepage-proofing problem, the seepage-proofing layer is arranged on the inner side of the channel, and the material is the seepage-proofing geomembrane or a high molecular compound (such as polyethylene), so that the high seepage-proofing performance of the whole channel can be ensured, and the risk of leakage or collapse of the channel is avoided.

The operation mode of the invention is adjustable, the scale of the fan, the working time of the automatic intermittent mud pump and the shutdown interval or the selection of the rotary drum type grating at the tail end of the channel are freely variable, and the maximization of the energy utilization efficiency can be realized on the premise of ensuring the dredging efficiency of the channel.

And fourthly, the invention is provided with a monitoring module. Specifically, a force sensor is arranged on the channel arm to monitor the water flow condition in the channel, and information can be transmitted to the flow velocity monitoring panel through a single chip microcomputer and the like. The staff can conveniently monitor and record the water flow condition in the channel in real time.

Aiming at the sundries (such as waterweeds, garbage bags and the like) which are difficult to settle in the irrigation water, the invention adopts the mode of arranging the rotary drum type grating at the tail end of the channel for treatment, thereby avoiding the later manual work of salvaging and cleaning the floating objects in the irrigation water, and the channel has higher treatment effect on the easily settled silt and the sundries which are difficult to settle.

The invention is convenient to operate and manage, and because the design of the farmland irrigation channel is improved, other devices are not required to be added for dredging.

Drawings

Fig. 1 is a front view of the present invention.

FIG. 2 is a schematic structural view of a mud storage surface of the present invention.

In the figure, 1 is an impermeable layer, 2 is a fan, 3 is a compound purging pipeline, 4 is a mud storage surface, 5 is an upright mud conveying pipe, 6 is a mud discharging tail pipe, 7 is an automatic intermittent mud discharging pump, 8 is a slag discharging groove pipe, 9 is a rotary drum type grid, 10 is a force sensor, 11 is a flow rate monitoring panel, 41 is a mud storage groove and 42 is a mud receiving hole.

Detailed Description

The following describes the technical solution of the present invention with reference to the accompanying drawings.

As shown in figure 1, the sweeping dredging type anti-blocking farmland irrigation channel is arranged in a U-shaped mode, the mud storage surface 4 is arranged at the bottom of the U-shaped channel, and the whole layout aims at facilitating silt deposition in irrigation water. A blowing and dredging type anti-blocking farmland irrigation channel inner side arrangement impervious layer 1 is characterized in that a higher anti-seepage performance is guaranteed, and a impervious geomembrane with the thickness of 3mm or a macromolecular compound material is selected as a material of the impervious layer 1 for anti-seepage treatment (such as a polyethylene film with the thickness of 0.4 mm). And when the impermeable layer is constructed and laid, carrying out water pressure leakage inspection and seam leakage inspection. A fan 2 is arranged below the channel for air supply, and the fan 2 selects a corresponding scale according to the actual situation of field use or the requirement of blowing intensity. The compound purging pipeline 3 is provided with dense vent holes which are arranged at the upper layer and the lower layer of the inner side of the channel, the blower supplies air to purge and desilt the channel, and a worker can adjust the purging angle of the compound purging pipeline 3 according to the design requirement or the field condition.

As shown in fig. 2, a mud storage trench 41 is arranged on the mud storage surface 4, the swept mud or the easily settled impurities are accumulated in the mud storage trench 41, a mud receiving hole 42 is arranged in the mud storage trench 41, and the diameter of the mud receiving hole 42 is set to be 100 mm. The aperture of the mud containing hole 42 is set to be large enough to avoid the blockage of the mud containing hole 42 by the earth and sand, and meanwhile, the cleaning work of workers is convenient when special conditions occur.

During specific construction design, the vertical mud conveying pipe 5 is connected with the mud containing hole 42, silt deposited in the mud containing hole 42 is conveyed by utilizing the pressure difference between the upper pressure and the lower pressure, and mud water is conveyed to the mud discharging tail pipe 6. The mud discharging tail pipe 6 is horizontally laid, and the mud discharging tail pipe 6 is connected with an automatic intermittent mud discharging pump 7. The automatic intermittent sludge pump 7 adopts an intermittent operation mode. The water flow in the sludge discharge tail pipe 6 is static in the shutdown mode of 40mins, a large amount of silt is deposited in the sludge storage surface 4, then the automatic intermittent sludge discharge pump 7 has a working mode of 15mins, and the vertical sludge conveying pipe 5 connected with the sludge discharge tail pipe 6 can absorb and discharge the sediment deposited in the sludge storage ditch 41 and the sludge receiving hole 42.

The final treatment process of the channel is designed as grid sewage interception, the rotary drum type grid 9 is adopted to intercept and treat sundries which are difficult to settle in irrigation water, the rotary drum type grid 9 is connected with a slag discharge groove pipe 8, and a proper grid bar interval is selected according to the principle that the slag discharge groove pipe cannot be blocked. The slag discharge groove pipe 8 is connected with the mud discharge tail pipe 6 to discharge impurities. The pipe diameters of the slag discharging groove pipe 8 and the mud discharging tail pipe 6 can be 200mm, so that the blockage in the pipeline is prevented.

The force sensors 10 are arranged on the inner wall of the channel, and the specific installation positions and the installation number can be arranged according to actual design requirements. In order to realize real-time monitoring and timely adjust dredging work of the channel, a flow velocity monitoring panel 11 is arranged to monitor irrigation water in the channel.

Although the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and persons skilled in the art may make changes to the appearance of the present invention based on the overall layout of the present invention without departing from the spirit of the present invention, and these changes are within the scope of the present invention.

Claims

1. A sweeping and dredging type anti-blocking farmland irrigation channel is characterized by structurally comprising an impermeable layer (1), a fan (2), a compound sweeping pipeline (3), a sludge storage surface (4), a vertical sludge conveying pipe (5), a sludge discharge tail pipe (6), an automatic intermittent sludge discharge pump (7), a residue discharge groove pipe (8) and a rotary drum type grid (9); the integral form of the channel is U-shaped, an impermeable layer (1) is arranged on the inner side of the channel, a fan (2) is arranged below the channel, a compound purging pipeline (3) is connected through a ventilation pipeline for air supply, a sludge storage surface (4) is arranged at the bottom of the U-shaped channel, a vertical sludge conveying pipe (5) is communicated with the sludge storage surface (4) and is connected with a sludge discharge tail pipe (6) below, the sludge discharge tail pipe (6) is connected with a sludge discharge pump (7), the sludge discharge tail pipe (6) is connected with a sludge discharge groove pipe (8), and the sludge discharge groove pipe (8) is connected with a rotary drum type grid (9);

the compound purging pipeline (3) is provided with dense vent holes and is arranged at the upper end and the lower end of the inner side of the channel, and the compound purging pipeline (3) is communicated with the fan (2) to supply air and purge the surface of the channel, so that sludge is gathered on the sludge storage surface (4); the blowing angle of the compound blowing pipeline (3) is adjustable.

2. A sweeping and dredging type anti-blocking farmland irrigation channel as claimed in claim 1, characterized in that the impermeable layer (1) is arranged inside the channel, is U-shaped along the channel, and is made of a polyethylene film with a thickness of 0.4mm or an impermeable geomembrane with a thickness of 3 mm.

3. A sweeping and dredging type anti-blocking farmland irrigation channel as claimed in claim 1, wherein the blower (2) is arranged at the lower side of the U-shaped channel.

4. A sweeping and dredging type anti-blocking farmland irrigation channel as claimed in claim 1, wherein the sludge storage surface (4) is provided with a sludge storage ditch (4-1), a sludge receiving hole (4-2) is arranged in the sludge storage ditch (4-1), the diameter of the sludge receiving hole (4-2) is set to be 100mm, and the sludge receiving hole (4-2) is communicated with a vertical sludge conveying pipe (5) to play a role in receiving and discharging sludge.

5. A sweeping dredging type anti-blocking farm irrigation channel as claimed in claim 1, wherein the dredge pump (7) is an automatic intermittent dredge pump (7) which operates in an intermittent mode with an operating time of 15mins and a shutdown time interval set to 40 mins.

6. A sweeping and dredging type anti-blocking farmland irrigation channel as claimed in claim 1, characterized in that the rotary drum type grating (9) adopts a curved grating, and a motor, a drum and a flushing water pipe are arranged in the curved grating to treat the impurities which are difficult to settle in the irrigation water in the channel.

7. A sweeping and dredging type anti-blocking farmland irrigation channel as claimed in claim 1, further comprising a plurality of force sensors (10) and flow rate monitoring panels (11), wherein the force sensors (10) are arranged on the channel wall, and the lines are communicated with the flow rate monitoring panels (11) to monitor the water flow rate and aeration sweeping conditions in the channel in real time.