A dredging head with separation function and use method thereof

Abstract

The invention relates to the technical field of water conservancy engineering, and discloses a dredging head with a separation function for water conservancy engineering, comprising a separation box with a walking structure, a sludge suction hood and an output head connected to a dredging pump, wherein a separation chamber and a sedimentation chamber are arranged in the separation box. The components in the sludge are separated by utilizing the principle that the larger the mass, the greater the inertia, and the stones with larger mass sink directly to the bottom, and since there are large differences in density, mass and sedimentation rate between organic components and inorganic components, further sedimentation separation is achieved in the sedimentation chamber, and simple separation and classification are achieved, which provides convenience for subsequent manual cleaning and reduces workload. Secondly, since separation is performed directly on the bottom of the water, the mass actually lifted to the water surface is greatly reduced, which reduces the power requirement for the dredging pump and reduces the equipment cost. At the same time, large mass and hard objects are left underwater, and the impact force on the conveying pipeline is greatly reduced, thereby increasing the service life of the conveying pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, in particular to a dredging head with a separation function and a use method thereof. Background Art

[0002] Siltation has affected the normal performance of various functions such as flood control, drainage, irrigation, water supply, and navigation. In order to restore the normal functions of the water areas and promote the rapid and sustainable development of the economy and society, it is necessary to carry out dredging operations on the water areas on a regular basis. Dredging operations generally include silt suction, cleaning of debris (including garbage and stones), and transportation.

[0003] For large waters, transport ships and large dredging equipment are generally required, and the materials to be dredged at the bottom of the water are usually simply dredged out, and then the dredged materials are transported to a predetermined place to complete the dredging operation. However, there is usually no device to separate or classify the materials dredged out by the dredging device, or simply classify them according to their weight. In general, the sludge composition is complex, some components have recycling value, and some components do not need to be transported away. Therefore, further separation operations are very useful and necessary.

[0004] Secondly, sucking the silt from the bottom of the water into the cabin requires a high-power silt suction pump, which has a high cost. In addition, since the silt contains many stones, it will cause great damage to the pipeline when flowing in the conveying pipeline, reducing its service life. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned background technology, the present invention provides a technical solution of a dredging head with separation function and a method of using the same, which has the advantages of good separation and classification effect, low power and little damage to pipelines, and solves the problems raised by the background technology.

[0006] The present invention provides the following technical solutions: a dredging head with a separation function, comprising a separation box with a walking structure, a sludge suction hood connected to a dredging pump, and an output head, wherein a separation chamber and a sedimentation chamber are arranged in the separation box, wherein the sedimentation chamber is connected to the output head, wherein the separation chamber is trumpet-shaped, wherein the sedimentation chamber wraps the separation chamber, wherein the sedimentation chamber and the separation chamber are connected through a plurality of suction ports, wherein the height of the suction ports is gradually reduced, and wherein the assembly angles corresponding to two adjacent suction ports are different, wherein the top of the separation chamber is connected to the sludge suction hood through an acceleration tube, wherein a deceleration chamber is arranged between the acceleration tube and the separation chamber, wherein a sewage suction head is arranged at the bottom of the sedimentation chamber, wherein the sewage suction head is connected to a sewage suction pump on the water surface, and wherein a collecting chamber is arranged at the bottom of the separation chamber.

[0007] Preferably, the bottom of the separation chamber is connected with a jet nozzle, the jet nozzle is provided with a sludge suction cover, a jet pump is provided between the jet nozzle and the separation chamber, and the suction port is distributed downward in a spiral.

[0008] Preferably, the precipitator box includes a bottom cover, which is adapted to the flow outlet of the separation chamber to achieve closure, and the bottom of the separation chamber is provided with a semicircular groove and a vertical limit groove, and the two sides of the separation chamber are connected with a rotating shaft through an elastic telescopic rod, and the rotating shaft is fixedly connected to the bottom cover, and the rotating shaft is fixedly connected with a rotating block matching the semicircular groove, and the rotating block is provided with a limit plate adapted to the limit groove, and an outflow hole is provided at the upper part of the collection chamber.

[0009] Preferably, the inner wall of the separation chamber is provided with a vertical arc groove, the arc groove is provided with a slide plate along one side of the swirl flow, and the suction port is provided on one side of the slide plate.

[0010] Preferably, the suction port is arranged at the junction of the slide plate and the arc-shaped groove, and the entrance of the arc-shaped groove is inclined toward the inner wall of the arc-shaped groove.

[0011] A method for using any of the above-mentioned dredging heads with separation function comprises the steps of:

[0012] S1: Determine the dredging range and moving path, and place the dredging head into the water bottom;

[0013] S2: Turn on the jet pump and the dredging pump connected to the output head at the same time to load the sucked sludge into the cabin;

[0014] S3: Timely start the sewage suction pump connected to the sewage suction head to suck the sludge deposited in the sedimentation chamber into another chamber, and control the dredging head to move along a predetermined route;

[0015] S4: After the pre-extraction is completed, the sludge is transported to the designated location, and steps S1-S3 are repeated until the dredging of the water area is completed.

[0016] The present invention has the following beneficial effects:

[0017] 1. The dredging head with separation function and its use method use the principle that the greater the mass, the greater the inertia to separate the components in the sludge. The stones with larger mass sink directly to the bottom, and due to the large difference in density, mass and sedimentation rate between the organic and inorganic components, further sedimentation separation is achieved in the sedimentation chamber, achieving simple separation and classification, providing convenience for subsequent manual cleaning and reducing workload.

[0018] 2. The dredging head with separation function and the method of using the same can separate directly on the bottom of the water. On the one hand, the mass actually lifted to the water surface is greatly reduced, which reduces the power requirement for the dredging pump and reduces the equipment cost. On the other hand, large mass and hard objects are left underwater, which greatly reduces the impact force on the conveying pipeline and increases the service life of the conveying pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the bottom sinking box in the present invention;

[0021] Figure 3 A top view of the separation chamber of the present invention;

[0022] Figure 4 It is a partial schematic diagram of the separation chamber in the present invention.

[0023] In the figure: 1, separation box; 2, sludge suction hood; 3, output head; 4, acceleration tube; 5, separation chamber; 6, sedimentation chamber; 7, suction port; 8, deceleration chamber; 9, collection chamber; 10, jet pump; 11, jet nozzle; 12, sludge suction head; 13, bottom box; 131, bottom cover; 132, semicircular groove; 133, rotating block; 134, rotating shaft; 135, limiting plate; 136, limiting groove; 137, elastic telescopic rod; 14, arc groove; 15, slide plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1A silt removal head with a separation function comprises a separation box 1 with a walking structure, a silt suction hood 2 connected to a silt removal pump, and an output head 3. A separation chamber 5 and a sedimentation chamber 6 are arranged in the separation box 1. The sedimentation chamber 6 is connected with the output head 3. The separation chamber 5 is trumpet-shaped. The sedimentation chamber 6 wraps the separation chamber 5. The sedimentation chamber 6 and the separation chamber 5 are connected through a plurality of suction ports 7. The height of the suction ports 7 is gradually reduced. The assembly angles of two adjacent suction ports 7 are different. The suction force of the output head 3 is dispersed to each suction port 7, so that the suction force of each suction port 7 is small. The top of the separation chamber 5 is connected with the silt suction hood 2 through an acceleration tube 4. The suction force of the suction port 7 is collected in the separation chamber 5 and transmitted to the silt suction hood 2 through the acceleration tube 4 to absorb the sludge. A deceleration chamber 8 is arranged between the acceleration tube 4 and the separation chamber 5. The silt cover 2 generates a lot of suction to suck up the silt and gradually accelerate it. The water flow decelerates less than the silt speed when passing through the deceleration chamber 8, which will produce resistance to the silt mixture. The heavier ones will sink directly to the bottom, while the lighter ones will be affected by the water flow, change direction, and flow out along the water flow to the suction port 7 to achieve light and heavy separation. The heavier substances with a lower sedimentation rate will be sucked out by the suction port 7 into the sedimentation chamber 6. Since the bottom cross-section of the sedimentation chamber 6 is further enlarged and the water flow is further slowed down, these heavier substances with a lower sedimentation rate are precipitated in the sedimentation chamber 6. A sewage suction head 12 is provided at the bottom of the sedimentation chamber 6. The sewage suction head 12 is connected to the sewage suction pump on the water surface. The sewage suction pump is started from time to time to suck away the debris accumulated in the sedimentation chamber 6. A collecting chamber 9 is provided at the bottom of the separation chamber 5 for collecting heavy debris.

[0026] The bottom of the separation chamber 5 is connected with a jet nozzle 11, which is provided on a sludge suction cover 2. A jet pump 10 is provided between the jet nozzle 11 and the separation chamber 5. The flow rate of the jet pump 10 is appropriately adjusted, and the flow rate ratio of the flow rate in the output head 3 to the flow rate of the jet pump 10 is not greater than 8, so that a vortex of appropriate size is generated in the separation chamber 5. The centrifugal force of the vortex can drive and extend the sedimentation time of the debris, leaving enough time for the debris to be sucked away by the suction port 7. The suction port 7 is distributed downward in a spiral, and at the same time, for heavier debris, the sedimentation rate is large. The objects are less affected by the vortex and sink directly to the bottom. As the vortex speed gradually accelerates upward and downward, the lighter objects are sucked away by the upper part, while the heavier objects with a lower sedimentation rate are sucked away by the lower part. The debris at the lower part enters the sedimentation chamber 6 and suddenly slows down and sinks to the bottom quickly. At the same time, the high-pressure jet generated by the jet nozzle 11 is injected into the silt layer to fluidize the silt for easy absorption. A filter is provided at the connection between the jet nozzle 11 and the separation chamber 5 to prevent excessively large debris from being sucked in, while fine sand particles can amplify the ability to impact the silt.

[0027] See also Figure 2The bottom box 13 includes a bottom cover 131, which is adapted to the outflow port of the separation chamber 5 to achieve closure. A semicircular groove 132 and a vertical limit groove 136 are provided at the bottom of the separation chamber 5. The limit groove 136 is connected to the semicircular groove 132. The two sides of the separation chamber 5 are connected with a rotating shaft 134 through an elastic telescopic rod 137. The rotating shaft 134 is fixedly connected to the bottom cover 131. The rotating shaft 134 is fixedly connected to a rotating block 133 matching the semicircular groove 132. The rotating block 133 is provided with There is a limiting plate 135 adapted to the limiting groove 136. As the material accumulated at the bottom of the separation chamber 5 increases and the mass increases, the elastic telescopic rod 137 is extended. When the limiting plate 135 is completely moved out of the limiting groove 136, the bottom cover 131 rotates under the weight, the rotating shaft 134 is staggered from the limiting groove 136, and the rotating block 133 rotates against the semicircular groove 132. The collected material is completely poured into the collecting chamber 9 for storage. An outflow hole is provided at the upper part of the collecting chamber 9, so that the organisms that are mistakenly sucked in can swim out from the overflow hole.

[0028] See also Figure 3 Among them, the inner wall of the separation chamber 5 is provided with a vertical arc groove 14, and the arc groove 14 is provided with a slide plate 15 along one side of the vortex, and the suction port 7 is arranged on one side of the slide plate 15. When the vortex flows through, objects with large weight have large inertia and are less affected, and fall on the slide plate 15 and are discharged, while objects with small mass are greatly affected by the suction force, and will fall into the arc groove 14 and be further sucked away.

[0029] See also Figure 4 The suction port 7 is arranged at the junction of the slide plate 15 and the arc groove 14, and the entrance of the arc groove 14 is inclined toward the inner wall of the arc groove 14. On the one hand, the flow caused by the suction force has a larger angle with the swirl direction, which can affect the objects in the swirl to a greater extent. On the other hand, anything that falls below the junction can flow into the suction port 7 along the arc groove 14.

[0030] A method for using a dredging head with a separation function comprises the following steps:

[0031] S1: Determine the dredging scope and moving path, and place the dredging head into the water. The dredging scope of a single time should be limited to the loading capacity of the dredging ship and other transport equipment;

[0032] S2: Turn on the jet pump 10, and at the same time turn on the silt removal pump connected to the output head 3, and fill the sucked sludge into the cabin; the jet of the jet pump 10 impacts the sludge, fluidizes the sludge, and makes it easy for the suction force of the sludge suction hood 2 to suck the sludge. The suction forces of the jet pump 10 and the output head 3 are gathered in the separation chamber 5, and objects with larger mass can be sucked, while the materials sucked by the separate suction forces of the jet pump 10 and the output head 3 are lighter;

[0033] S3: Timely start the sewage suction pump connected to the sewage suction head 12 to suck the sludge deposited in the sedimentation chamber 6 into another chamber, and control the dredging head to move along a predetermined route; the large mass objects deposited in the collection chamber 9 can be sucked by a high-power sewage suction pump, or they can be scooped up and discharged as a whole, or directly poured into the bottom of the water;

[0034] S4: After the pre-extraction is completed, the sludge is transported to the designated location, and steps S1-S3 are repeated until the dredging of the water area is completed.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dredging head with a separation function, comprising a separation box (1) with a walking structure and a sludge suction hood (2) and an output head (3) connected to a dredging pump, characterized in that: The separation box (1) is provided with a separation chamber (5) and a sedimentation chamber (6), the sedimentation chamber (6) is connected to the output head (3), the separation chamber (5) is trumpet-shaped, the sedimentation chamber (6) wraps the separation chamber (5), the sedimentation chamber (6) and the separation chamber (5) are connected through a plurality of suction ports (7), the height of the suction ports (7) gradually decreases, and the assembly angles corresponding to two adjacent suction ports (7) are different, the top of the separation chamber (5) is connected to the sludge suction cover (2) through an acceleration tube (4), a deceleration chamber (8) is provided between the acceleration tube (4) and the separation chamber (5), a sewage suction head (12) is provided at the bottom of the sedimentation chamber (6), the sewage suction head (12) is connected to a sewage suction pump on the water surface, and a collection chamber (9) is provided at the bottom of the separation chamber (5).

2. A dredging head with separation function according to claim 1, characterized in that: The bottom of the separation chamber (5) is connected to a jet nozzle (11), the jet nozzle (11) is provided with a sludge suction cover (2), a jet pump (10) is provided between the jet nozzle (11) and the separation chamber (5), and the suction port (7) is distributed downward in a spiral shape.

3. The dredging head with separation function according to claim 1, characterized in that: The bottom sink box (13) comprises a bottom cover (131), the bottom cover (131) is adapted to be closed with the outflow outlet of the separation chamber (5), the bottom of the separation chamber (5) is provided with a semicircular groove (132) and a vertical limit groove (136), the two sides of the separation chamber (5) are connected with a rotating shaft (134) via an elastic telescopic rod (137), the rotating shaft (134) is fixedly connected with the bottom cover (131), the rotating shaft (134) is fixedly connected with a rotating block (133) matching with the semicircular groove (132), the rotating block (133) is provided with a limit plate (135) matching with the limit groove (136), and the upper part of the collection chamber (9) is provided with an outflow hole.

4. The dredging head with separation function according to claim 1, characterized in that: The inner wall of the separation chamber (5) is provided with a vertical arc groove (14), and a slide plate (15) is provided on one side of the arc groove (14) along the swirl flow, and the suction port (7) is provided on one side of the slide plate (15).

5. A dredging head with separation function according to claim 4, characterized in that: The suction port (7) is arranged at the junction of the slide plate (15) and the arc-shaped groove (14), and the entrance of the arc-shaped groove (14) is inclined toward the inner wall of the arc-shaped groove (14).

6. A method for using the dredging head with separation function according to any one of claims 1 to 5, characterized in that: Includes steps: S1: Determine the dredging range and moving path, and place the dredging head into the water bottom; S2: Turn on the jet pump (10) and at the same time turn on the silt removal pump connected to the output head (3) to load the sucked silt into the cabin; S3: timingly starting the sewage suction pump connected to the sewage suction head (12) to suck the sludge deposited in the sedimentation chamber (6) into another chamber, and controlling the dredging head to move along a predetermined route; S4: After the pre-extraction is completed, the sludge is transported to the designated location, and steps S1-S3 are repeated until the dredging of the water area is completed.

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