A spiral net type intercepting and salvaging device for intercepting algae at a channel diversion outlet
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-20
- Publication Date
- 2026-07-21
Smart Images
Figure CN122428623A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to water conservancy and environmental protection equipment technology, specifically to a rotary net-type interception and dredging device for blocking algae at channel branch outlets. Background Technology
[0002] Large-scale water conveyance channels are core infrastructure for agricultural irrigation, urban and rural water supply, and watershed ecological water replenishment projects. They play a crucial role in cross-regional water resource allocation and precise water demand distribution. The water distribution point, as the connecting node between the main water conveyance channel and downstream branch channels and water pipelines, is the core hub for controlling water distribution and ensuring water use scheduling within the channel water conveyance system. During long-term operation of the channel, the enrichment of nutrients such as nitrogen and phosphorus in the water body can easily trigger the explosive reproduction of phytoplankton such as cyanobacteria, green algae, and diatoms. At the water distribution point, due to the narrowing of the channel cross-section and the throttling effect of the gates, the water flow pattern changes abruptly, and the flow velocity drops sharply, making it a core area for the accumulation, settling, and deposition of phytoplankton. The continuous accumulation of phytoplankton at the water distribution point can cause a series of engineering and water quality problems: large amounts of algae accumulation can directly block the gate slots, water conveyance channels, and water metering systems at the water distribution point. Measuring equipment, reducing the cross-sectional area of the channel, and decreasing the flow capacity and water distribution accuracy at the water distribution point directly affect the stability and accuracy of downstream irrigation and water supply scheduling. The massive death and decomposition of algae rapidly consumes dissolved oxygen in the water, creating an anaerobic environment that leads to water quality deterioration and odor generation, seriously threatening the safety of urban and rural water supply and the quality of irrigation water. Simultaneously, the acidic substances and biofilm produced by algal metabolism exacerbate corrosion and scaling of gates and steel structures at the water distribution point, significantly shortening equipment lifespan and increasing the operation and maintenance costs and management difficulty of the channel project. Therefore, in current water conservancy engineering practice, algae-blocking devices are commonly installed at the channel water distribution point to physically prevent planktonic algae from entering downstream branch canals with the water flow. This is the most direct and commonly used technical means for algae control at the water distribution point and ensuring downstream water safety.
[0003] However, existing algae control devices at channel branch inlets cannot meet the long-term, stable algae control requirements of branch inlet applications. Most existing algae control devices use fixed planar mesh structures, which lack overall structural strength and are ill-suited to the complex hydraulic conditions at large water conveyance channel branch inlets, characterized by large water level fluctuations, strong water flow impacts, and easy collisions with debris. Over long-term use, these devices are prone to mesh deformation, frame damage, and even complete collapse, failing to achieve long-term stable operation. Furthermore, existing mesh devices have poor corrosion resistance. With the mesh body constantly immersed in water, it is susceptible to erosion from water salinity, microorganisms, and algal metabolites, leading to mesh wire corrosion and material aging and cracking. This not only rapidly reduces the interception effect but also necessitates frequent shutdowns for replacement. This significantly increases the cost of engineering operation and maintenance. In addition, existing algae interception devices can only passively intercept algae and cannot simultaneously complete the automated harvesting and cleaning of intercepted algae. The intercepted algae will continue to accumulate on the water-facing side of the barrier, which not only easily causes the mesh to become clogged and the flow area to be reduced, directly affecting the normal water conveyance scheduling of the water distribution point, but also requires maintenance personnel to go into the water regularly to carry out manual cleaning operations, which has low cleaning efficiency and high operational safety risks. In particular, it is difficult to adapt to the operation scenario of wide cross-section and deep water in the water distribution point of large water conveyance channels. More importantly, the existing devices have limited interception efficiency for planktonic algae and cannot adapt to the dynamic algae interception needs under the complex flow conditions of the water distribution point, making it difficult to achieve efficient interception and routine control of planktonic algae at the water distribution point of large water conveyance channels. Summary of the Invention
[0004] The purpose of this invention is to provide a vortex net-type interception and retrieval device for blocking algae at channel branch outlets, in order to solve the problems of insufficient structural strength, poor corrosion resistance, inability to simultaneously intercept and retrieval algae, easy clogging, high maintenance difficulty, and inability to operate stably for a long time in the existing algae blocking devices.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a vortex net interception and retrieval device for blocking algae at a channel diversion point, comprising a diversion point gate chamber maintenance door slot installed in the main body of the channel, wherein a vortex net support mechanism, a machine head drive mechanism, an algae collection mechanism and an algae blocking mechanism are provided in the diversion point gate chamber maintenance door slot.
[0006] The vortex net support mechanism includes a vortex net bracket, which is vertically embedded in the maintenance door slot of the water diversion gate chamber. A preset distance is reserved between the bottom of the vortex net bracket and the bottom of the maintenance door slot of the water diversion gate chamber. Several upstream support slides are fixedly installed on the upstream side of the vortex net bracket, and a lower bracket is fixedly installed on the downstream side of the vortex net bracket. Several downstream support slides are provided on one side of the lower bracket. Side rails are fixedly installed on both the left and right sides of the vortex net bracket, and side wheels are movably installed in the side rails.
[0007] The head drive mechanism includes a frame, which is fixedly installed on the top of the rotating screen support and extends to the top of the maintenance gate slot of the water distribution gate chamber. A head drive device is fixedly installed on the frame. A drive shaft is provided at the top of the frame near the head drive device. A sprocket is provided at one end of the drive shaft and the output end of the head drive device. A chain is meshed between the sprockets. Support shafts are installed inside the frame and at the bottom of the rotating screen support.
[0008] The algae-blocking mechanism includes an algae-blocking vortex net, which is a stainless steel wire woven mesh. The algae-blocking vortex net is sleeved on the outer surface of the drive shaft and the support shaft. The lower half of the algae-blocking vortex net is submerged in the main water body of the channel, and the upper half extends above the water surface.
[0009] The algae collection mechanism includes a water tank, which is fixedly installed on the frame and located downstream of the algae-blocking vortex net. A filter plate is fixedly installed inside the water tank, which divides the interior of the water tank into upper and lower layers. The upper layer is an algae collection chamber, and the lower layer is a return water chamber. The return water chamber is connected to the interior of the channel body through a return pipe.
[0010] Furthermore, the rotating mesh support is a split-type stacked structure, comprising multiple standard mesh frame units, with adjacent standard mesh frame units being fixedly connected by high-strength bolts; the standard mesh frame unit is welded from stainless steel rectangular tubes and stainless steel square tubes, and the length of a single standard mesh frame unit is 1.6m.
[0011] Furthermore, the vortex net support includes three net frame units and one lower support unit, and the four net frame units are assembled vertically. The preset distance between the bottom of the vortex net support and the bottom of the maintenance gate slot of the water diversion gate chamber is 0.5m.
[0012] Furthermore, the main frame of the rotating mesh support is formed by welding stainless steel rectangular tubes with specifications of 120×80×5mm and stainless steel square tubes with specifications of 80×60×5mm. The overall structure meets the design requirements for rigidity, strength and stability.
[0013] Furthermore, the upstream support slide is a full-body high-molecular-weight polyethylene slide, with a total of three slides evenly distributed along the height direction of the rotating mesh support. The downstream support slide is 1.6m long and is fixedly installed in the lower middle part of the downstream side of the rotating mesh support.
[0014] Furthermore, the head drive device includes a drive motor and a reduction gearbox. The drive motor drives the transmission shaft and sprocket to rotate clockwise through the reduction gearbox, thereby driving the chain mesh structure to circulate along the spinning mesh support.
[0015] Furthermore, the surface of the algae-blocking vortex net slides in contact with the surfaces of the upstream and downstream support slides. The upstream and downstream support slides are used to support and limit the algae-blocking vortex net, preventing friction damage between the net and the support structure or building.
[0016] Furthermore, the tank body is made of stainless steel, the filter plate is made of stainless steel with a perforated structure, the surface of the filter plate is inclined to the running direction of the algae-blocking vortex net, and the bottom surface of the inner wall of the tank is also an inclined surface structure.
[0017] Compared with the prior art, the rotary net-type algae interception and retrieval device for channel water diversion outlets provided by the present invention has the following beneficial effects:
[0018] 1. This invention uses a stainless steel swirl net support and a stainless steel wire woven algae-blocking swirl net. The overall structure has excellent corrosion resistance. At the same time, the swirl net support is formed by welding stainless steel rectangular tubes and square tubes, which has high structural strength and can adapt to the complex hydraulic conditions of large water level fluctuations and strong water flow impact at the water outlet of large water conveyance channels. It is not easy to rust, age or structural damage when immersed in water for a long time. Compared with the existing technology, it improves the operational stability of the device and can achieve long-term stable operation.
[0019] 2. This invention adopts a spiral-type circulating algae-blocking structure. The drive mechanism of the machine head drives the sprocket and chain transmission, thereby driving the algae-blocking spiral net to continuously circulate. It can efficiently intercept phytoplankton in the water while simultaneously automatically lifting algae attached to the net surface to the water surface, completing the harvesting and collection of algae. There is no need for manual underwater cleaning. Compared with the existing technology, it improves the efficiency of algae interception and harvesting, while avoiding the problem of mesh blockage caused by algae accumulation, and ensuring the normal water supply scheduling of the water distribution point.
[0020] 3. The algae-blocking vortex net of the present invention adopts a stainless steel wire woven mesh structure, which has the characteristics of rust resistance, good toughness and easy cleaning. Combined with the filter plate and inclined bottom structure in the water tank, it can quickly complete the collection of algae and algae-water separation. The net surface can quickly restore the interception performance after rinsing. Compared with the existing technology, it improves the operation and maintenance efficiency of the device and is suitable for the long-term algae control needs of the water distribution point of large water conveyance channels.
[0021] 4. The vortex net support of the present invention adopts a split and stacked design, which can be directly embedded in the maintenance door slot of the existing water diversion gate chamber without the need for additional civil engineering foundation excavation, making installation convenient. At the same time, the upstream and downstream support slides form a stable support for the algae blocking vortex net, avoiding frictional damage to the net body, support and structure caused by water flow impact. Compared with the prior art, the installation efficiency and operational reliability of the device are improved.
[0022] 5. This invention, through its vortex-type circulating interception structure, can adapt to the dynamic interception needs of algae under complex flow conditions at the water distribution point, achieving continuous and efficient interception and removal of planktonic algae in the water. Compared with existing technologies, it improves the algae control efficiency at the water distribution point and is suitable for routine algae control at the water distribution point of large water conveyance channels.
[0023] 6. The water tank of the present invention adopts a double-layer separation structure. The upper layer achieves centralized collection of algae through the filter plate, and the lower layer return water chamber can return the rinsing wastewater to the channel to avoid water waste. At the same time, the inclined filter plate and the inclined bottom surface of the inner wall of the water tank can prevent the accumulation of algae and wastewater. Compared with the prior art, the algae-water separation efficiency and operation convenience of the device are improved. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0025] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;
[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the maintenance gate slot of the water diversion gate chamber provided in an embodiment of the present invention;
[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the rotary mesh provided in an embodiment of the present invention;
[0028] Figure 4 This is a schematic diagram of the rotating mesh support structure provided in an embodiment of the present invention;
[0029] Figure 5 This is a schematic diagram of the front structure of the spiral mesh provided in an embodiment of the present invention;
[0030] Figure 6 This is a schematic diagram of the side structure of the spiral mesh provided in an embodiment of the present invention.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Main channel; 2. Inspection gate slot of the water distribution gate chamber; 3. Frame; 4. Head drive device; 5. Drive shaft; 6. Support shaft; 7. Rotary screen; 8. Sprocket; 9. Chain; 10. Water tank; 11. Filter plate; 12. Rotary screen support; 13. Side wheel; 14. Upstream support slide; 15. Lower support; 16. Downstream support slide. Detailed Implementation
[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0034] As attached Figure 1 To be continued Figure 6 As shown:
[0035] Example 1:
[0036] This invention provides a rotary net interception and retrieval device for blocking algae at the channel diversion point, including a diversion gate chamber inspection door slot 2 installed on the channel body 1, and a rotary net support mechanism, a machine head drive mechanism, an algae collection mechanism and an algae blocking mechanism are provided in the diversion gate chamber inspection door slot 2.
[0037] The vortex net support mechanism includes a vortex net bracket 12, which is vertically embedded in the maintenance door slot 2 of the water diversion gate chamber. A preset distance is reserved between the bottom of the vortex net bracket 12 and the bottom of the maintenance door slot 2 of the water diversion gate chamber. Several upstream support slides 14 are fixedly installed on the upstream side of the vortex net bracket 12, and a lower bracket 15 is fixedly installed on the downstream side of the vortex net bracket 12. Several downstream support slides 16 are provided on one side of the lower bracket 15. Side rails are fixedly installed on both the left and right sides of the vortex net bracket 12, and side wheels 13 are movably installed in the side rails.
[0038] The upstream support slide 14 is a full-body high-molecular polyethylene slide, with three slides in total, evenly distributed along the height direction of the rotating mesh support 12; the downstream support slide 16 is 1.6m long and is fixedly installed in the lower middle part of the downstream side of the rotating mesh support 12.
[0039] The surface of the algae-blocking vortex net 7 slides and fits against the surfaces of the upstream support slide 14 and the downstream support slide 16. The upstream support slide 14 and the downstream support slide 16 are used to support and limit the algae-blocking vortex net 7, so as to avoid friction damage between the net and the support or building.
[0040] The head drive mechanism includes a frame 3, which is fixedly installed on the top of the vortex screen support 12 and extends to the top of the maintenance gate slot 2 of the water diversion gate chamber. A head drive device 4 is fixedly installed on the frame 3. A drive shaft 5 is provided at the top of the frame 3 near the head drive device 4. A sprocket 8 is provided at one end of the drive shaft 5 and the output end of the head drive device 4. A chain 9 is meshed and connected between the sprockets 8. A support shaft 6 is installed inside the frame 3 and at the bottom of the vortex screen support 12.
[0041] The head drive device 4 includes a drive motor and a gearbox. The drive motor drives the transmission shaft 5 and the sprocket 8 to rotate clockwise through the gearbox, thereby driving the chain mesh structure to circulate along the spinning mesh support 12.
[0042] The algae-blocking mechanism includes an algae-blocking vortex net 7, which is a stainless steel wire woven mesh. The algae-blocking vortex net 7 is fitted onto the outer surface of the drive shaft 5 and the support shaft 6. The lower half of the algae-blocking vortex net 7 is submerged in the water of the channel body 1, and the upper half extends above the water surface.
[0043] The algae collection mechanism includes a water tank 10, which is fixedly installed on the frame 3 and located downstream of the algae-blocking vortex net 7. A filter plate 11 is fixedly installed inside the water tank 10, which divides the interior of the water tank 10 into upper and lower layers. The upper layer is the algae collection chamber, and the lower layer is the return water chamber. The return water chamber is connected to the interior of the channel body 1 through a return pipe.
[0044] The tank body of the water tank 10 is made of stainless steel, and the filter plate 11 is made of stainless steel with a perforated structure. The surface of the filter plate 11 is inclined to the running direction of the algae blocking vortex net 7, and the bottom surface of the inner wall of the water tank 10 is also an inclined surface structure.
[0045] Working principle: First, the staff will carry out preparatory work for the on-site installation of the device. First, the maintenance gate slot 2 of the water distribution gate chamber of the main channel 1 will be thoroughly cleaned to remove silt, scale, debris and obstacles in the gate slot, ensuring that the inner wall of the gate slot is flat and smooth, without any protrusions or jamming points, so as to provide a flat installation foundation for the installation of the vortex screen support 12. Then, the staff will check whether each component of the vortex screen support mechanism, the head drive mechanism, the algae blocking mechanism and the algae collection mechanism is intact, and confirm that there are no deformation, damage or corrosion problems in each component, thus completing all the pre-installation inspection work.
[0046] Next, the staff hoisted the entire vortex screen support 12 to the top of the maintenance gate slot 2 of the diversion gate chamber, adjusted the hoisting posture to ensure that the vortex screen support 12 and the maintenance gate slot 2 of the diversion gate chamber were coaxially aligned, and then slowly lowered the vortex screen support 12 and vertically embedded it into the maintenance gate slot 2 of the diversion gate chamber. The staff adjusted the vertical installation position of the vortex screen support 12 to leave a preset gap between the bottom of the vortex screen support 12 and the bottom of the maintenance gate slot 2 of the diversion gate chamber. Then, the staff fixed and limited the vortex screen support 12 to the side wall of the maintenance gate slot 2 of the diversion gate chamber to prevent the support from shifting or shaking during the operation of the device, thus completing the installation and fixing of the vortex screen support mechanism.
[0047] Then, the workers fixedly installed the frame 3 at the top of the rotating screen support 12, extending the frame 3 to the position above the maintenance gate slot 2 of the water diversion gate chamber. The head drive device 4 was then fixedly installed on the frame 3. Simultaneously, a drive shaft 5 was installed at the top of the frame 3 near the head drive device 4. A sprocket 8 was installed at one end of the drive shaft 5, corresponding to the output end of the head drive device 4. A drive chain 9 was meshed between the two sprockets 8, completing the first-stage transmission assembly of the head drive mechanism. Subsequently, the workers... Support shafts 6 are installed inside the frame 3 and at the bottom of the vortex net support 12 respectively. The algae-blocking vortex net 7 is fitted onto the outer surfaces of the drive shaft 5 and the support shaft 6. The tension of the algae-blocking vortex net 7 is adjusted to ensure that the lower half of the algae-blocking vortex net 7 is completely submerged in the water of the channel body 1 and the upper half extends above the water surface. At the same time, it is ensured that the net surface of the algae-blocking vortex net 7 is completely slidably attached to the surface of the upstream support slide 14 on the upstream side of the vortex net support 12 and the downstream support slide 16 on the downstream lower support 15, thus completing the installation of the algae-blocking mechanism.
[0048] Subsequently, the workers fixedly installed a water tank 10 on the downstream side of the algae-blocking vortex net 7 on the frame 3. Inside the water tank 10, an inclined filter plate 11 was fixedly installed, dividing the interior of the water tank 10 into an upper algae collection chamber and a lower return water chamber. Simultaneously, the surface of the filter plate 11 was inclined to the running direction of the algae-blocking vortex net 7 to accommodate its rinsing operation. The workers then connected the return water chamber to the interior of the channel body 1 via a return pipe, completing the installation of the algae collection mechanism. Finally, the workers completed the electrical wiring of the head drive device 4, connecting the drive to the power supply. After the machine is electrically connected to the field control box and the overall electrical assembly of the device is completed, the device is tested under no-load: the machine head drive device 4 is started, the reduction gearbox of the machine head drive device 4 drives the sprocket 8 at the output end to rotate, and drives the sprocket 8 at the end of the transmission shaft 5 to rotate synchronously through the chain 9, thereby driving the transmission shaft 5 to rotate clockwise. The transmission shaft 5 and the support shaft 6 cooperate to drive the algae blocking vortex net 7 to circulate along the vortex net support 12. It is confirmed that there is no abnormal noise, no jamming, and no chain derailment during the operation of the device. The algae blocking vortex net 7 operates smoothly, and all the debugging work before the device is put into use is completed.
[0049] After the device enters the formal algae-blocking operation state, the head drive device 4 drives the transmission shaft 5 and sprocket 8 to rotate continuously clockwise through the reduction gearbox. Through the cooperation of the transmission shaft 5 and the support shaft 6, the algae-blocking vortex net 7 is driven to continuously circulate along the vortex net support 12. The lower half of the algae-blocking vortex net 7 is continuously submerged in the water body of the channel body 1. When the channel water flows towards the water distribution port and passes through the mesh of the algae-blocking vortex net 7, the planktonic algae in the water body are physically intercepted and attached to the water-facing surface of the algae-blocking vortex net 7, achieving efficient interception of planktonic algae. The algae-blocking vortex net 7 with attached algae is continuously lifted upward under the driving force of the circulation, and the intercepted algae are simultaneously scooped from the water body to the surface of the water, realizing the simultaneous operation of algae interception and scooping.
[0050] During the operation of the device, the three through-type upstream support slides 14 on the upstream side of the vortex net support 12 and the downstream support slides 16 on the downstream side continuously provide stable support and limit the net surface of the algae-blocking vortex net 7, preventing the net from deforming or shifting due to the impact of the channel water flow. At the same time, it prevents the algae-blocking vortex net 7 from being damaged by friction with the vortex net support 12 and the channel structure during operation, effectively extending the service life of the algae-blocking vortex net 7. The side wheels 13 in the side rails on the left and right sides of the vortex net support 12 provide lateral limit on the left and right sides of the algae-blocking vortex net 7, preventing the algae-blocking vortex net 7 from shifting left and right or derailing during operation, further ensuring the stability of the device operation.
[0051] When the algae-blocking vortex net 7, covered with algae, rotates to the position above the water tank 10, the staff uses a high-pressure washing device to wash the surface of the algae-blocking vortex net 7, washing the algae attached to the net surface into the water tank 10 below. The algae fall onto the filter plate 11 on the upper layer of the water tank 10, achieving centralized collection of algae. The wastewater generated by washing flows through the holes of the filter plate 11 into the lower return water chamber. Because the bottom surface of the inner wall of the water tank 10 is an inclined structure, the wastewater can quickly collect to the return water inlet and return to the main channel 1 through the return pipe, avoiding water waste and achieving efficient separation of algae and water. After being washed and cleaned, the algae-blocking vortex net 7 re-enters the water body of the main channel 1 with the circulation operation, continuously carrying out algae interception operations, realizing continuous cycle operation of algae interception, dredging, net cleaning, and collection.
[0052] When the device needs to be shut down for maintenance, the staff first shuts down the head drive device 4 to stop the algae-blocking vortex screen 7 from circulating. Then, the algae-blocking vortex screen 7 is thoroughly rinsed and cleaned. The algae collected on the filter plate 11 is collected, cleaned, and transported away. At the same time, the transmission components such as the chain 9, sprocket 8, support shaft 6, and drive shaft 5 are inspected and lubricated. Damaged mesh wires are repaired. The wear of the upstream support slide 14 and the downstream support slide 16 is inspected and replaced to complete the maintenance of the device. The entire device is made of stainless steel, which has excellent corrosion resistance and does not require personnel to go into the water, greatly reducing the difficulty of operation and maintenance and the risk of operation safety.
[0053] Example 2:
[0054] This embodiment is basically the same as the previous embodiment, except that the rotating mesh support 12 is a split-type stacked structure, including multiple standard mesh units. Adjacent standard mesh units are fixedly connected by high-strength bolts. The standard mesh unit is welded from stainless steel rectangular tubes and stainless steel square tubes, and the length of a single standard mesh unit is 1.6m.
[0055] The vortex net support 12 includes three net frame units and one lower support 15. The four net frame units are stacked vertically and assembled together. The preset distance between the bottom of the vortex net support 12 and the bottom of the maintenance gate slot 2 of the water diversion gate chamber is 0.5m.
[0056] The main frame of the rotating mesh support 12 is formed by welding stainless steel rectangular tubes with specifications of 120×80×5mm and stainless steel square tubes with specifications of 80×60×5mm. The overall structure meets the design requirements for rigidity, strength and stability.
[0057] Working principle: First, based on the actual depth of the maintenance gate slot 2 of the target channel's water diversion gate chamber, the staff prefabricates and assembles the vortex mesh support 12. The vortex mesh support 12 adopts a split-type stacked structure, with a single standard mesh frame unit having a length of 1.6m. The staff selects three upper mesh frame units and one lower support 15, and uses high-strength bolts to stack and assemble the four mesh frame units vertically. During the assembly process, it is ensured that each mesh frame unit is coaxially aligned, the connecting surfaces are tightly fitted, and the tightening torque of the high-strength bolts meets the design requirements. After assembly, the overall height of the vortex mesh support 12 is compatible with the depth of the gate slot, while ensuring that a preset distance of 0.5m is reserved between the bottom of the vortex mesh support 12 and the bottom of the maintenance gate slot 2 of the water diversion gate chamber after installation. The main frame of the vortex mesh support 12 is formed by welding 120×80×5mm stainless steel rectangular tubes and 80×60×5mm stainless steel square tubes. The overall structure meets the design requirements for rigidity, strength, and stability, and can adapt to the complex hydraulic impact conditions of the water diversion gate.
[0058] Next, the staff hoisted the assembled spiral screen support 12 into the maintenance door slot 2 of the water distribution gate chamber, adjusted the installation position and completed the fixed limit. Then, following the installation process of Example 1, the installation and electrical wiring of the head drive mechanism, algae blocking mechanism and algae collection mechanism were completed in sequence. After the overall assembly of the device was completed, the device was tested under no-load to confirm that the split spiral screen support 12 was not loose or deformed, the algae blocking spiral screen 7 was running smoothly, and all transmission components were operating normally. The debugging work before the device was put into use was completed.
[0059] During operation, the split-type stacked spiral mesh support 12 can flexibly adjust the number of mesh frame units to fit the depth of the maintenance gate slot 2 of the water distribution gate chamber of different specifications. It does not require on-site cutting and processing, and has strong adaptability to different scenarios. At the same time, the modular assembly structure greatly reduces the difficulty of on-site installation, disassembly and transportation, and improves the installation and maintenance efficiency of the device compared with the integral support. The stainless steel support body has excellent corrosion resistance and is not prone to rusting or aging when immersed in water for a long time. The structural strength can withstand the continuous impact of channel water flow, ensuring the long-term stable operation of the device.
[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A rotary net-type interception and retrieval device for blocking algae at a channel diversion point, characterized in that, Includes a water distribution gate chamber maintenance door slot (2) installed on the main body of the channel (1), wherein the water distribution gate chamber maintenance door slot (2) is provided with a vortex net support mechanism, a machine head drive mechanism, an algae collection mechanism and an algae blocking mechanism; The vortex net support mechanism includes a vortex net bracket (12), which is vertically embedded in the maintenance door slot (2) of the water diversion gate chamber. A preset distance is reserved between the bottom of the vortex net bracket (12) and the bottom of the maintenance door slot (2) of the water diversion gate chamber. Several upstream support slides (14) are fixedly installed on the upstream side of the vortex net bracket (12), and a lower bracket (15) is fixedly installed on the downstream side of the vortex net bracket (12). Several downstream support slides (16) are provided on one side of the lower bracket (15). Side rails are fixedly installed on both the left and right sides of the vortex net bracket (12), and side wheels (13) are movably installed in the side rails. The head drive mechanism includes a frame (3), which is fixedly installed on the top of the swirl screen support (12) and extends to the top of the maintenance gate slot (2) of the water distribution gate chamber. A head drive device (4) is fixedly installed on the frame (3). A drive shaft (5) is provided at the top of the frame (3) near the head drive device (4). A sprocket (8) is provided at one end of the drive shaft (5) and the output end of the head drive device (4). A chain (9) is meshed between the sprockets (8). A support shaft (6) is installed inside the frame (3) and at the bottom of the swirl screen support (12). The algae-blocking mechanism includes an algae-blocking vortex net (7), which is a stainless steel wire woven mesh. The algae-blocking vortex net (7) is sleeved on the outer surface of the drive shaft (5) and the support shaft (6). The lower half of the algae-blocking vortex net (7) is submerged in the water of the channel body (1), and the upper half extends above the water surface. The algae collection mechanism includes a water tank (10), which is fixedly installed on the frame (3) and located downstream of the algae-blocking vortex net (7). A filter plate (11) is fixedly installed inside the water tank (10). The filter plate (11) divides the interior of the water tank (10) into upper and lower layers. The upper layer is the algae collection chamber, and the lower layer is the return water chamber. The return water chamber is connected to the interior of the channel body (1) through the return pipe.
2. The rotary net-type interception and retrieval device for algae interception at a channel branching point according to claim 1, characterized in that, The rotating mesh support (12) is a split-type superimposed structure, including multiple standard mesh units. Adjacent standard mesh units are fixedly connected by high-strength bolts. The standard mesh unit is welded from stainless steel rectangular tubes and stainless steel square tubes, and the length of a single standard mesh unit is 1.6m.
3. A rotary net-type interception and retrieval device for blocking algae at a channel diversion point according to claim 2, characterized in that, The spiral net support (12) includes three net frame units and one lower support (15). The four net frame units are stacked and assembled vertically. The preset distance between the bottom of the spiral net support (12) and the bottom of the maintenance gate slot (2) of the water diversion gate chamber is 0.5m.
4. A rotary net-type interception and retrieval device for blocking algae at a channel diversion point according to claim 3, characterized in that, The main frame of the rotating mesh support (12) is formed by welding a stainless steel rectangular tube with a specification of 120×80×5mm and a stainless steel square tube with a specification of 80×60×5mm. The overall structure meets the design requirements for stiffness, strength and stability.
5. A rotary net-type interception and retrieval device for blocking algae at a channel diversion point according to claim 1, characterized in that, The upstream support slide (14) is a full-body high molecular weight polyethylene slide, with a total of three slides, which are evenly distributed along the height direction of the rotating mesh support (12). The downstream support slide (16) is 1.6m long and is fixedly installed in the lower middle part of the downstream side of the rotating mesh support (12).
6. A rotary net-type interception and retrieval device for blocking algae at a channel diversion point according to claim 1, characterized in that, The head drive device (4) includes a drive motor and a gearbox. The drive motor drives the transmission shaft (5) and the sprocket (8) to rotate clockwise through the gearbox, thereby driving the chain mesh structure to circulate along the spinning mesh support (12).
7. A rotary net-type interception and retrieval device for blocking algae at a channel diversion point according to claim 1, characterized in that, The surface of the algae-blocking vortex net (7) slides and fits against the surfaces of the upstream support slide (14) and the downstream support slide (16). The upstream support slide (14) and the downstream support slide (16) are used to support and limit the algae-blocking vortex net (7) to avoid friction damage between the net and the support or building.
8. A rotary net-type interception and retrieval device for blocking algae at a channel diversion point according to claim 1, characterized in that, The tank (10) is made of stainless steel, the filter plate (11) is made of stainless steel with a perforated structure, the surface of the filter plate (11) is inclined to the running direction of the algae blocking net (7), and the bottom surface of the inner wall of the tank (10) is also an inclined surface structure.