A device and method for cleaning weed sludge

Abstract

The application discloses a kind of weed sludge cleaning device and cleaning method, weed sludge cleaning device includes suction pipe, filter chamber, sludge compression chamber, the bottom of the suction pipe is equipped with ring cutter for cutting weeds, promote the mixing of sludge water, the suction pipe is communicated with one side of weed cleaning chamber, the other side of weed cleaning chamber is communicated with filter chamber, the other side of filter chamber is communicated with sludge compression chamber;Rotatable grass filter ring is provided in the weed cleaning chamber, the inner wall of the grass filter ring is provided with processing rake, the inside of the grass filter ring is provided with grass returning plate for sending weeds into grass storage bin.The application can simultaneously process weeds and sludge, improve dredging efficiency, reduce equipment damage risk and have fewer moving parts, more fixed parts, greatly reduce equipment operation and maintenance cost.

Description

Technical Field

[0001] This invention relates to a dredging device, and more particularly to a device and method for cleaning weeds and silt from lakebeds. Background Technology

[0002] Due to the low water flow rate at the bottom of lakes, silt removal is extremely difficult compared to the higher flow rates of rivers. Current methods for lake silt removal generally employ dredgers, such as the self-propelled cutter suction dredger for lakes and seas disclosed in Chinese Patent Publication No. CN115126031A. While these methods can achieve silt removal, the silt at the bottom of lakes is often mixed with weeds. Single-function dredgers often lack the ability to handle these weeds, leading to blockages and damage to the slurry conveying mechanism. Furthermore, the operation and discharge of large dredgers themselves cause serious pollution to the underwater environment. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a weed and silt removal device and method to solve the above-mentioned technical problems.

[0004] Technical Solution: The present invention provides a weed and silt cleaning device, comprising a suction pipe, a water filtration chamber, and a silt compression chamber. The bottom of the suction pipe is provided with a ring cutter for cutting weeds and promoting mud-water mixing. The suction pipe is connected to one side of the weed cleaning chamber, the other side of the weed cleaning chamber is connected to the water filtration chamber, and the other side of the water filtration chamber is connected to the silt compression chamber. The weed cleaning chamber is provided with a rotatable filter ring, the inner wall of the filter ring is provided with a processing rake, and the inside of the filter ring is provided with a weed discharge plate for sending weeds into the storage bin.

[0005] Furthermore, the filter chamber is provided with a first filter plate for separating mud and water, and a drainage device is provided on the upper part of the first filter plate.

[0006] Furthermore, the first filter plate is inclined, and its height gradually decreases as the mud and water travel a certain distance.

[0007] Furthermore, the sludge compression chamber is equipped with a sludge feeding plate, and the top of the sludge feeding plate is equipped with a second water filter plate for secondary separation of sludge and water. The distance between the sludge feeding plate and the second water filter plate gradually decreases as the sludge and water travel distance.

[0008] Furthermore, a mud baffle is also provided at the bottom of the suction pipe.

[0009] Furthermore, the rear part of the ring cutter is provided with a filter screen for isolating large particulate impurities.

[0010] Furthermore, a dosing chamber is provided at the entrance of the weed clearing chamber, which contains a flocculant for promoting mud-water separation.

[0011] Furthermore, the processing rake is set perpendicular to the inside of the filter ring, with uniform spacing between the rake teeth and a gap of 0.2-0.3cm.

[0012] Furthermore, the outer wall of the filter ring is provided with through holes, and the size of the through holes does not affect the normal flow of the mud-water mixture.

[0013] The present invention provides a method for clearing weeds and silt using the aforementioned weed and silt removal device, comprising the following steps:

[0014] S1: Preparation work: Move the underwater weed and silt removal device to the location to be treated, and then debug the underwater weed and silt removal device.

[0015] S2: Device pretreatment, start the weeding ring in the weed cleaning chamber to make it rotate fully, and open the weed removal plate conveyor device;

[0016] S3: Weed and silt removal. Start the weed and silt collection unit. The ring cutter at the bottom of the suction pipe is used to remove weeds and stir up the silt, so that the silt mixes with the lake water to form a flowable mud-water mixture.

[0017] S4: Separation of weeds and silt. The weeds mixed in with the silt can be hooked out by the treatment rake in the weed cleaning chamber and sent to the silt storage bin through the silt return board. The silt will enter the water filtration chamber for the next step of processing.

[0018] S5: Sludge conveying, the processed and compressed sludge is conveyed out through the sludge conveying plate in the sludge compression chamber.

[0019] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0020] (1) The present invention can simultaneously treat weeds and silt, improve dredging efficiency, and reduce the risk of equipment damage;

[0021] (2) The present invention further drains and compresses the sludge in the sludge compression chamber, effectively reducing the weight of the sludge and increasing the storage space of the sludge.

[0022] (3) The present invention sets up a filter screen to effectively filter out impurities with larger particle sizes such as stones, prevent stones from entering the lower suction pipe and causing blockage, and protect the sludge pump.

[0023] (4) The present invention has fewer moving parts and more fixed parts, which greatly reduces the equipment operation and maintenance costs. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the weed-clearing chamber structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the sludge compression chamber structure of the present invention. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] The present invention provides a weed and silt cleaning device, as shown in the figure, comprising a suction pipe 1, a water filtration chamber 3, and a silt compression chamber 4. The bottom of the suction pipe 1 is provided with a ring cutter 102 for cutting weeds and promoting mud-water mixing. The suction pipe 1 is connected to one side of the weed cleaning chamber 2, and the other side of the weed cleaning chamber 2 is connected to the water filtration chamber 3. The other side of the water filtration chamber 3 is connected to the silt compression chamber 4. The weed cleaning chamber 2 is provided with a rotatable filter ring 201. The filter ring 201 is connected to the inner wall of the weed cleaning chamber 2 through a fixing frame 207. The inner wall of the filter ring 201 is provided with a processing rake 202. The filter ring 201 is provided with a weed removal plate 204 for sending weeds into the grass storage bin 203. The filtration chamber 3 contains a first filter plate 301 for separating mud and water. The first filter plate 301 has drainage holes with a diameter of 0.2-0.3 cm. A drainage device is located above the first filter plate 301, comprising a suction pipe 302, a pump 303, and a drain pipe 304. The first filter plate 301 is inclined, and its height gradually decreases as the mud and water travel. The sludge compression chamber 4 contains a sludge feeding plate 401. A second filter plate 402 for secondary mud-water separation is located at the top of the sludge feeding plate 401. The distance between the sludge feeding plate 401 and the second filter plate 402 gradually decreases as the mud and water travel. A baffle plate 101 is also located at the bottom of the suction pipe 1. A filter screen 103 for isolating large particles of impurities is located behind the ring cutter 102. The filter screen has a mesh diameter of 0.5-0.6 cm. The inlet of the weed removal chamber 2 is also equipped with a dosing chamber 205, which contains a flocculant to promote mud-water separation. The treatment rake 202 is installed perpendicular to the inside of the filter ring 201, with uniformly spaced teeth and a gap of 0.2-0.3 cm. The outer wall of the filter ring 201 has through holes, the size of which does not affect the normal flow of the mud-water mixture.

[0030] The weed and silt removal method using the above-mentioned weed and silt removal device includes the following steps: S1: Preparation: Move the underwater weed and silt removal device to the location to be treated, and then debug the underwater weed and silt removal device; S2: Device pretreatment: Start the weeding ring in the weed cleaning chamber to make it rotate fully, and open the weed removal plate conveying device; S3: Weed and silt removal: Start the weed and silt collection unit, use the ring cutter at the bottom of the suction pipe to remove weeds and stir up the silt, so that the silt mixes with the lake water to form a flowable mud-water mixture; S4: Weed and silt separation: The processing rake in the weed cleaning chamber can hook out the weeds mixed in with the silt and send them to the storage bin through the weed removal plate. The silt will enter the filtration chamber for further treatment; S5: Silt conveying: The processed and compressed silt is sent out through the silt conveying plate in the silt compression chamber.

[0031] Working Principle: Based on the thickness of the silt and weeds in the lake, the device is transported to the appropriate location. First, the motor 208 of the filter ring 201 in the weed cleaning chamber 2 is turned on to ensure full operation, and the dosing chamber 205 is opened to allow the flocculant to flow smoothly into the weed cleaning chamber. The weed and silt collection unit is then activated. Due to the rotation of the ring cutter 102, the weeds it contacts are cut off, and the silt is also dispersed, forming a mud-water mixture to a certain extent. This mixture flows into the weed treatment chamber 2 through the suction pipe 1. The mud-water-weed mixture flowing into the weed cleaning chamber 2 is thoroughly mixed with the flocculant, achieving complete separation of mud and water. Due to the action of the rotating treatment rake 202 inside the filter ring, the weeds in the mixture are hooked up and removed from the mixture. As the treatment rake rises, the weeds fall into the weed removal plate 204 due to gravity. With the conveyor belt of the weed removal plate 204, the weeds fall into the weed storage chamber 203. The remaining mud-water mixture enters the water filtration chamber 3. The filtration chamber is equipped with an inclined first filter plate 301. Under forward and downward pressure, the mud-water mixture, which is fully mixed with flocculant, is squeezed and separated. Water passes through the filter plate 301 and is drawn into the suction pipe 303 by a water pump 303 placed on the filter plate, and discharged to the outside of the device through the drain pipe 304. The initially dewatered sludge flows into the sludge compression chamber 4 and falls into the sludge feeding plate 401. Under the action of the sludge feeding plate conveyor belt, it moves upward. An inclined second filter plate 402 is set above the sludge feeding plate to further filter the water from the sludge. At the same time, it can also compact the loose sludge to reduce its volume and facilitate storage.

Claims

1. A weed and silt cleaning device, comprising a sludge suction pipe (1), a water filtration chamber (3), and a silt compression chamber (4), characterized in that, It also includes a weed cleaning chamber (2), the bottom of the suction pipe (1) is provided with a ring cutter (102) for cutting weeds and promoting mud-water mixing, the suction pipe (1) is connected to one side of the weed cleaning chamber (2), the other side of the weed cleaning chamber (2) is connected to the water filtration chamber (3), the other side of the water filtration chamber (3) is connected to the sludge compression chamber (4); the inlet of the weed cleaning chamber (2) is also provided with a dosing chamber (205), the dosing chamber contains a flocculant for promoting mud-water separation; the weed cleaning chamber (2) is provided with a rotatable filter ring (201), the inner wall of the filter ring (201) is provided with a treatment rake (202), the inside of the filter ring (201) is provided with a weed removal plate (204) for sending weeds into the grass storage chamber (203); the outer wall of the filter ring (201) is provided with a through hole, the size of the through hole does not affect the normal flow of mud-water mixture; The filter chamber (3) is equipped with a first filter plate (301) for separating mud and water, and a pumping device is provided on the upper part of the first filter plate (301); The first filter plate (301) is inclined, and its height gradually decreases as the mud and water travel distance; The sludge compression chamber (4) is equipped with a sludge feeding plate (401), and a second filter plate (402) for secondary separation of sludge and water is provided on the top of the sludge feeding plate (401). The distance between the sludge feeding plate (401) and the second filter plate (402) gradually decreases as the sludge and water travel distance.

2. The weed and silt removal device according to claim 1, characterized in that, The bottom of the suction pipe (1) is also provided with a mud baffle (101).

3. The weed and silt removal device according to claim 1, characterized in that, The rear of the ring cutter (102) is provided with a filter screen (103) for isolating large particulate impurities.

4. The weed and silt removal device according to claim 1, characterized in that, The processing rake (202) is set perpendicular to the inside of the filter ring (201), with uniform spacing between the rake teeth and a gap of 0.2-0.3cm.

5. A method for clearing weeds and silt, characterized in that, Using a weed and silt removal device as described in any one of claims 1-4 includes the following steps: S1: Preparation work: Move the underwater weed and silt removal device to the location to be treated, and then debug the underwater weed and silt removal device. S2: Device pretreatment, start the weeding ring in the weed cleaning chamber to make it rotate fully, and open the weed removal plate conveyor device; S3: Weed and silt removal. Start the weed and silt collection unit. The ring cutter at the bottom of the suction pipe is used to remove weeds and stir up the silt, so that the silt mixes with the lake water to form a flowable mud-water mixture. S4: Weed and silt separation. The weeds mixed in with the silt can be hooked out by the treatment rake in the weed cleaning room and sent to the silt storage bin through the weed return board. The silt will enter the water filtration chamber for the next step of processing. S5: Sludge conveying, the processed and compressed sludge is conveyed out through the sludge conveying plate in the sludge compression chamber.

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