Algae blocking net liftable algae blocking machine

Abstract

A kind of algae blocking net liftable algae blocking machine, including structural system, it includes pier support structure, steel platform and steel column and guide groove fixedly arranged on pier support structure, for forming integral frame;Algae blocking system, it includes support frame, net spinning that is pasted on support frame, drive head arranged on the upper portion of support frame and algae net separation system;It is used to intercept and remove algae;Algae-water separation system, it includes vibrating screen, conveying belt and collection box, for separating algae and water;It can realize continuous algae blocking, full water section algae blocking.The efficiency of algae blocking is high.The body beam is supported on steel support, so that the whole algae blocking equipment runs smoothly and reliably.Working reliably.Algae is impacted and attached to the net chain by water flow, and the algae attached to the net chain is brought to the top of the algae blocking equipment, and the turning and unloading action is completed.

Description

Technical Field

[0001] This utility model relates to the field of algae-blocking machine technology, and more specifically to an algae-blocking machine with a liftable algae-blocking net. Background Technology

[0002] The South-to-North Water Diversion Project includes a massive gravity-flow artificial canal connecting to a pumping station with culverts across multiple climate zones and river basins. Water transport primarily utilizes open channels, with concrete linings used for the canal slopes and bottom. Currently, the main canal's water transport ecosystem is in its early stages of development; ecosystem balance has not yet been established, and system stability is insufficient, posing a risk of abnormal algal proliferation. Abnormal proliferation and shedding of resident algae (mainly Cladophora) have occurred on the slopes of the main canal in the Nanyang section of the South-to-North Water Diversion Middle Route, posing a potential risk to water-receiving units and water plants along the route. This algal outbreak emergency response... In the process of dealing with algae outbreaks, the Central Route Company comprehensively adopted equipment and facilities such as multi-functional slope algae removal vehicles, algae blocking devices, netting, and diversion channel interception devices, which played an important role in emergency response. However, faced with the new working conditions and trends of abnormal large-scale growth and outbreak of algae in the main canal of the Central Route, especially the situation in 2022 where algae proliferated abnormally and then detached and entered the water body, the physical interception equipment currently deployed in the main canal, such as multi-functional slope algae removal vehicles, algae blocking devices, and diversion channel interception devices, proved insufficient in controlling the new working conditions of large-scale abnormal algae proliferation. Utility Model Content

[0003] One advantage of this invention is that it provides an algae-blocking machine with a liftable algae-blocking net, enabling continuous algae blocking across the entire water flow section. It boasts high algae-blocking efficiency. The machine's side beams are supported by a steel frame, ensuring stable and reliable operation. Water flow is used to impact and adhere algae to the net chain, carrying the algae to the top of the algae-blocking equipment for a flipping and unloading action.

[0004] To achieve at least one of the above advantages of this utility model, this utility model provides an algae-blocking machine with a liftable algae-blocking net, including... The structural system includes a gate pier support structure, a steel platform and steel columns and guide channels fixedly installed on the gate pier support structure, which are used to form an overall frame. The interception and removal system includes a support frame, a rotating net flatly attached to the support frame, a drive head set on the upper part of the support frame, and an algae net separation system; it is used to intercept and remove algae. An algae-water separation system, comprising a vibrating screen, a conveyor belt, and a collection box, is used to separate algae and water; An automatic adjustment and emergency lifting system, including a hoist and a drive unit, is used to lift the fishing barrier system; Electrical and control equipment, including control cabinets and power supply equipment electrically connected to the algae-water separation system, automatic regulation and emergency lifting system.

[0005] According to one embodiment of the present invention, the guide channel and the steel platform are fixedly installed on the gate pier. A steel column is provided on the upper part of the steel platform. The top of the guide channel and the steel column are connected to the hoist platform. The hoist platform is provided with a lifting mechanism. The lifting mechanism includes a screw and is connected to the support frame through the screw. The hoist drives the support frame to slide up and down in the guide channel through the lifting mechanism.

[0006] According to one embodiment of the present invention, the guide groove includes an upper guide groove and a lower guide groove, the upper guide groove being located above the steel platform and the lower guide groove being located below the steel platform.

[0007] According to one embodiment of the present utility model, a spinning net support is also provided on the support frame, and gears are provided at both the upper and lower ends of the spinning net support, and the spinning net is wound on several gears. The drive unit is mounted on a steel platform and connected to a main shaft system. An upper steering sprocket set and a lower steering sprocket set are also installed on the steel platform. The spinning net extends toward the steel platform and passes over the upper steering sprocket set, the main shaft system, and the lower steering sprocket set.

[0008] According to one embodiment of the present invention, a nozzle is also provided on the steel platform, with the nozzle of the nozzle being arranged obliquely downward and facing the rotating mesh.

[0009] According to one embodiment of the present invention, a water conveying trough is provided at the lower part of the steel platform. The water conveying trough is connected to the algae-water separation system and is located below the nozzle. Attached Figure Description

[0010] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a schematic diagram illustrating the working principle of this utility model; Figure 3 This is a plan view of the structure of this utility model; Figure 4 This is a schematic diagram of the rotating screen head structure of this utility model; Figure 5 This is a layout diagram of the interception and lifting system of this utility model; Figure 6 This is a layout diagram of the dredging system and power system of this utility model; In the attached diagram: 1. Hoist platform, 2. Lifting mechanism, 3. Screw, 4. Guide channel, 5. Algae-water separation system, 6. Barrier system, 7. Steel platform, 8. Gear, 9. Nozzle, 10. Algae-water collection device, 11. Rotary net, 12. Rotary net support, 13. Equipment platform, 14. Drive device, 15. Pedestrian platform, 16. Support frame, 17. Steel column. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix of this utility model. Figure 1 ~Appendix Figure 6 The present invention will be described in more detail below.

[0012] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0013] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0014] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0015] This utility model provides an algae-blocking machine with a liftable algae-blocking net, including a structural system comprising a gate pier support structure, a steel platform 7 and steel columns 17 fixedly mounted on the gate pier support structure, and a guide channel 4 to form an overall frame; a dredging system 6 comprising a support frame 16, a rotating net 11 flatly attached to the support frame 16, a drive head and an algae-net separation system mounted on the upper part of the support frame 16, used to intercept and remove algae; an algae-water separation system 10 comprising a vibrating screen, a conveyor belt and a collection box, used to separate algae and water; an automatic adjustment and emergency lifting system comprising a gate hoist and a drive device 14, used to lift the dredging system 6; and electrical and control equipment comprising a control cabinet and power supply equipment electrically connected to the algae-water separation system 10 and the automatic adjustment and emergency lifting system; the guide channel 4 and the steel platform 7 are fixedly mounted on the gate pier, with the steel column 17 mounted on the upper part of the steel platform 7, and the top of the guide channel 4 and the steel column 17 connected to the gate hoist platform 1. The hoist platform 1 is equipped with a lifting mechanism 2, which includes a screw 3 and is connected to the support frame 16. The hoist drives the support frame 16 to slide up and down in the guide groove 4 through the lifting mechanism 2. The guide groove 4 includes an upper guide groove and a lower guide groove. The upper guide groove is located above the steel platform 7, and the lower guide groove is located below the steel platform 7. The support frame 16 is also equipped with a rotating mesh support 12. Gears 8 are provided at both the upper and lower ends of the rotating mesh support 12, and the rotating mesh 11 is wound around several gears 8. The drive unit 14 is mounted on the steel platform 7 and is connected to the main shaft system. The steel platform 7 is also equipped with an upper steering sprocket set and a lower steering sprocket set. The rotating net 11 extends toward the steel platform 7 and passes over the upper steering sprocket set, the main shaft system, and the lower steering sprocket set. The steel platform 7 is also equipped with a nozzle, and the nozzle 9 of the nozzle is set obliquely downward and toward the rotating net 11. A water conveying tank is provided at the lower part of the steel platform 7. The water conveying tank is connected to the algae water separation system 5 and is located below the nozzle.

[0016] The first embodiment of this utility model is as follows: The steel platform 7 refers to a full-span steel platform 7 spanning the channel, arranged on the gate pier. The drive unit 14 and conveying unit are both arranged on the steel platform 7. The steel platform 7 also serves as a passage for personnel inspection and maintenance. The ends of the steel platform 7 are fixed to the gate pier by anchor bolts. Steel columns 17 are also arranged on the gate pier. The bottom of the steel columns 17 is fixed to concrete by anchor bolts, and the top is connected to the hoist platform 1 by bolts 3. The hoist platform 1 is also connected to the upper guide channel by bolts. The steel columns 17 and the upper guide channel together serve as the support for the hoist platform 1. A lifting mechanism 2 is arranged inside the hoist platform 1. Each hoist mechanism 2 is connected to the rotating mesh 11 and the support frame 16 by two bolts 3, thereby lifting the rotating mesh 11 and the support frame 16.

[0017] The lifting mechanism 2 is arranged on the top hoist platform 1. The two ends of the support frame 16 are provided with screws 3 connected to the lifting mechanism 2. When the algae blocking device is under maintenance, the support frame 16 can be completely lifted out of the water surface through the guide channel 4. When working, the support frame 16 is lowered to 300mm from the bottom of the channel.

[0018] The support frame 16 is arranged at both ends within the grooves of the guide channel 4 structure, and is supported on the flanges of the guide channel 4 by guide rails, thereby transmitting water pressure. The algae-blocking vortex net 11 is arranged inside the grooves of the support frame 16, and is supported on the guide channel 4 by two guide rails at the front and rear ends, respectively. The algae-blocking vortex net 11 and the end of the support frame 16 are connected to the lifting device of the screw 3 by adaptive nuts, which can realize the automatic lifting of the height of the vortex net 11, thereby adjusting the water depth of the vortex net 11 or for maintenance and replacement of the vortex net 11. A vortex net bracket 12 is provided on the support frame 16 to maintain the shape of the vortex net 11. A drive mechanism is arranged on the downstream side of the vortex net 11 above the water surface, and the drive mechanism is installed above the equipment platform 13. The vortex net 11 is driven to rotate by the gear 8 and rack. The algae-blocking vortex net 11 has a protrusion on the downstream side, which is a high-pressure water spray device inside. The nozzle 9 directly sprays the vortex net 11, and the algae is washed off and falls onto the conveying device and collected to the shore. An algae-water separation device is arranged on the shore to dehydrate the transported algae. The spinning net 11 is connected to the machine head drive device via a sprocket, which drives the spinning net to rotate.

[0019] The guide channel 4 is vertically arranged in front of the gate. Each algae-blocking device requires one guide channel 4 on each side, and algae-blocking devices at adjacent orifices share one guide channel 4, which is divided into an upper guide channel and a lower guide channel. A baffle plate in the middle of the guide channel 4 divides the "U"-shaped guide channel 4 into two, turning it into a "3"-shaped structure. The guide channel 4 is mainly used for the sliding guidance of the vortex net 11 and the support frame 16. The upper guide channel also serves as the support for the platform of the lifting mechanism 2. The guide channel 4 is the supporting structure for the algae-blocking vortex net 11 and the support frame 16. When the algae-blocking vortex net 11 is working, the water pressure on the algae-blocking net is transmitted to the gate pier through the guide channel 4; when not working, the algae-blocking vortex net 11 and the frame can slide within the guide channel 4.

[0020] To increase the distance between the gate pier support and the steel column 17 and improve structural stability, the steel column 17 is positioned behind the gate pier, at the intersection of the traffic bridge and the gate pier. The center of the steel column 17 is approximately 2.5m from the front edge of the gate pier. Its bottom is anchored to the gate pier concrete via reinforcing bars, and its top is bolted to the hoist platform 1. The steel column 17 is 13.1m high. A truss structure connects the column to the upper guide channel, forming an integrated frame structure for the algae-blocking device and enhancing structural stability. An anchoring support is installed at the bottom of the gate pier support, secured by anchor bars embedded in the gate pier concrete. The distance from the end of the support to the front edge of the gate pier concrete is 2m, and the center of the steel column 17 is 0.5m from the end of the gate pier support.

[0021] This design occupies approximately 0.9m of the traffic bridge area and facilitates the arrangement of cable conduits for the algae-blocking device. The 0.9m space also allows for easy operation by staff during algae-blocking activities. Under locked conditions, the structure experiences its most unfavorable stress under wind loads. The upstream side of the gate pier support is under pressure of 126.7t, and the bottom anchor bars of steel column 17 exhibit tensile strength of 45.7t. To meet the tensile strength requirements of the anchor bars in steel column 17, with a bearing capacity of 12.0t and a non-uniform bearing coefficient of 0.5, at least 8 anchor rods are required, arranged on the gate pier within a 3.0m radius of the front end. This provides a large bearing area and favorable stress conditions. The total weight of steel column 17 is approximately 23.0t.

[0022] The algae caught by the vortex net 11 needs to be detached from the net surface; otherwise, the circulating vortex net 11 will carry the algae back into the dry channel and be washed away by the water flow. On the upstream side of the main shaft of the machine head, spray pipes are arranged inside the circulating vortex net 11 to rinse the vortex net 11 from the opposite side where algae are attached. Once the algae attached to the surface of the vortex net 11 reaches the spray pipes and is washed out, it is impacted by the water flow and falls into the conveying tank, forming an algae-water mixture. The conveying tank is made of stainless steel with unequal heights at both ends. Relying on the flow characteristics of the algae-water mixture, it flows out from the lower end of the tank and enters the algae-water separation system 5. The algae-water separation process uses vibration separation. The vibration separation equipment uses a vibrating motor as the vibration source, causing the material to be thrown up on the screen while simultaneously moving forward in a straight line, achieving both separation and conveying functions. After algae and water separation, the moisture content of the wet algae is greatly reduced. A belt elevator is used to connect to the discharge port of the vibrating separation equipment to transport and collect the wet algae into a collection bucket, and the on-site algae treatment process can be completed.

[0023] The algae-blocking device guide channel 4 includes an upper guide channel and a lower guide channel. The main function of the lower guide channel is to support the rotating net 11 and the supporting frame 16. The upper guide channel extends along the cross-section of the lower guide channel to the top hoist platform 1, and is used for guiding and supporting the rotating net 11 and the frame.

[0024] The lower guide channel is a crucial component supporting the hydrocyclone 11 and the support frame 16. The water pressure on the hydrocyclone 11 is transmitted to the support frame 16 via a slide rail, then through the frame to the lower guide channel, and finally to the gate pier via the lower guide channel. The lower guide channel is located in front of the gate pier, with its top end welded to the gate pier support and its bottom end 300mm from the channel bottom. The lower guide channel and the gate pier are connected by three anchor supports. Each anchor support consists of an anchor bar and an arc-shaped steel plate. The anchor bar is inserted into the concrete to a depth of approximately 600mm along the vertical arc direction, and the other end is threaded. Bolts are used to secure the anchor steel plate to the guide channel 4. Welded reinforcing plates on the web of the guide channel 4 structure enhance its load-bearing capacity.

[0025] The lower guide channel structure adopts an anchored gate slot form, welded from Q355B steel plates, and is vertically arranged in front of the gate pier and on the side walls. There are a total of 5 lower guide channels for the algae blocking device, with three different specifications depending on their placement, and the width of the guide channel 4 varies for each specification. The lower guide channel of the gate pier is a double-web box girder structure, with two widths of 1400mm and 2700mm. There are two 1400mm guide channels 4 and one 2700mm guide channel 4. The 2700mm lower guide channel is composed of two symmetrical parts connected by bolts. The lower guide channel of the side wall is a single-web I-beam structure, with the guide channels 4 on the left and right side walls being symmetrical structures. The lower guide channel is 10.5m long and the beam height is about 1m. Each algae blocking device requires one guide channel 4 on each side, and algae blocking devices with adjacent orifices share one guide channel 4. The flanges and webs of the I-beam in guide channel 4 combine to form a groove structure with a groove width of approximately 900 mm. A sliding track is installed inside the groove to support the sliding of frame 16 within guide channel 4. A guide plate is installed at the front end of guide channel 4 to improve the flow pattern at the gate pier and minimize head loss at the flow cross-section.

[0026] The main function of the upper guide channel is to serve as a slide for the spiral net 11 and the supporting frame 16 to be lifted out of the water, and also as a support for the upper hoist platform 1. The upper guide channel is located in front of the gate pier, stretched along the cross-section of the lower guide channel. The bottom of the upper guide channel is welded to the lower guide channel and the gate pier support, and the top is hinged to the hoist platform 1 by bolts. The upper guide channel is a double-web box girder structure welded from Q355B steel plates, and comes in four specifications depending on its location. The upper guide channel is 12.53m long, with a groove width of 900mm and a beam height of 932mm. Depending on the installation location, the width of the guide channel 4 varies, with three specifications: 1330mm, 1400mm, and 2700mm.

[0027] The gate pier support is the foundation of the algae-blocking device and bears the main load of the device. The gate pier support is an outward-extending cantilever beam structure, with the front end extending outward to accommodate the pedestrian platform 15. The guide groove 4 is embedded in both sides of the outward-extending beam. The support column of the lifting mechanism 2 is located on top of the gate pier support. Anchor bolts are installed at the bottom of the gate pier support where it contacts the gate pier concrete for fixation. There are five gate pier supports in total, welded from Q355B steel plates, and there are three structural types depending on their placement. All three types of gate pier supports have similar cross-sections: a beam height of 550mm, a length of 4000mm, an outward extension length of 2000mm, and a beam height that decreases to 196mm at the outward-extending end.

[0028] The steel platform 7 includes two types: equipment platform 13 and pedestrian platform 15. The algae blocking net 11 and the support frame 16 can be locked onto the equipment platform 13 and pedestrian platform 15.

[0029] Equipment platform 13 is mainly used to install the machine head drive mechanism and conveying mechanism, and as a maintenance platform. Equipment platform 13 is installed downstream of the rotating screen 11 system. Both ends of the platform are supported on the top of the gate piers, and the bottom is fixed by anchor bolts and embedded plates. A bracket is welded onto the platform to connect the machine head mechanism. Equipment platform 13 is a simply supported beam structure, available in two span sizes: 7850mm and 8360mm, depending on its location. There are four spans in total, two of each size. Equipment platform 13 is welded from Q355B steel plates, with its upper surface flush with the gate pier supports, a height of 500mm, and a width of 1700mm.

[0030] Pedestrian platform 15 is installed on the upstream side of the spiral mesh 11 system, serving as a maintenance platform for cleaning and upkeep of the spiral mesh 11 system. Pedestrian platform 15 is a simple beam structure welded from Q355B steel plates. Both ends of the platform are bolted to the front end of the gate pier supports. Depending on the installation location, it has two spans: 8905mm and 9895mm, with a total of four spans, two of each type. The platform beam is 294mm high and 880mm wide.

[0031] The algae interception system 6 consists of a vortex net 11, a vortex net support 12, a support frame 16, a drive mechanism for the vortex net 11, and a spraying device. The vortex net 11 surrounds the vortex net 11 frame and the drive mechanism. The vortex net 11 frame is arranged vertically, and the support frame 16 is arranged downstream of the vortex net 11 frame to provide support for the entire interception system 6. The drive mechanism drives the vortex net 11 and the algae and other debris attached to its surface to the spraying device, where backwashing washes the algae off the net surface, and the algae are collected below the head of the sprayer.

[0032] The spiral net 11 is a key component of the algae-catching equipment, used to collect algae. It features chains on both sides with support shafts at the chain links to ensure overall strength. The central mesh is made of stainless steel wire and is interconnected with the support shafts. The chains on both sides are used for transmission, while the wire mesh is used to intercept algae.

[0033] Specifically, the spiral mesh 11 can be one of the following: diamond-shaped mesh, double spiral mesh 11, type B mesh, or spectacle mesh: The diamond-shaped mesh belt is made by interlocking 11 spiral wires to form a mesh belt, with chains on both sides connected by support shafts that pass through the mesh openings to form a unified structure. The mesh openings are in a regular diamond shape. Its advantages include good flexibility, smooth operation, large mesh openings, and ease of installation and disassembly. For maintenance, single spiral wires are used for rotation and connection.

[0034] The double-spiral mesh 11 is similar in structure to the diamond mesh, using spiral mesh 11 wires woven into a mesh belt with triangular mesh openings. Depending on the application environment, appropriate pitch and shear ratio are selected, and the mesh belt edges are generally welded or bent.

[0035] Type B mesh is woven using an automatic spiral machine, resulting in a lightweight single-layer structure driven by a sprocket. It features a large aperture ratio, uses an 8-gear drive, ensures smooth transport, is easy to clean, has a flat and smooth surface, and lacks chain drive structures on both sides. While capable of handling light loads, it is not suitable for heavy loads.

[0036] Spectacular mesh uses a structure with chains on both sides and connecting rods on the supports. The stainless steel wire is bent into an eye shape with two loops. Adjacent supports pass through the two loops, interlacing to form the mesh belt. Spectacular mesh is made by shaping the mesh wire into the shape of eyeglasses and stringing them together with supports to form a mesh belt. Spectacular mesh has a high aperture ratio, making it easy to clean, assemble, and disassemble. The mesh belt runs smoothly, the mesh surface is flat, it can be used for transporting unstable items, can withstand high loads and tensile strength, and has a long service life.

[0037] The vortex net 11 frame is installed in the slot of the support frame 16. It is the main supporting component for the running trajectory of the vortex net 11 and also the moving part for adjusting the water entry depth of the vortex net 11. According to the principle of algae blocking technology, in order to ensure that the vortex net 11 enters the water to the maximum extent, the steering sprocket on the upper part of the vortex net 11 frame must be higher than the head frame in order to maintain the running trajectory of the vortex net 11.

[0038] The frame of the spiral net 11 is made of stainless steel. The side beams use 350×350×12mm rectangular tubing as the frame, while the middle section uses 140×80×6mm rectangular tubing as both longitudinal and transverse beams, connecting the side beams into a single unit. The lifting and lowering of the spiral net 11 frame to adjust its water depth is achieved using a double-point screw-type hoist, with the lifting points located at the top of the side beams. A truss is designed on the upper part of the spiral net 11 frame as the main supporting beam, improving the frame's support strength and structural rigidity.

[0039] The slide rail utilizes a groove-embedded design, with the rail made of ultra-high molecular weight polyethylene (UHMWPE), which boasts excellent self-lubricating properties and a low coefficient of friction. It also exhibits superior wear resistance, corrosion resistance, impact resistance, and low-temperature resistance. The base employs a C-shaped stainless steel groove, with grooves machined along the length of both sides of the slide rail to accommodate two ear plates that fit into the stainless steel groove. This design ensures the slide rail is securely fixed and difficult to dislodge.

[0040] Support frame 16 is placed on the downstream side of the spiral net 11 frame and installed within the embedded door slot track. It is the load-bearing component of the spiral net 11 frame. According to the structural form of the spiral net 11 frame, the side beams are made of welded steel plate box beams, and then several longitudinal and transverse trusses are designed inside the side beams to form a whole. The truss frame is made of 100×100×5mm square tubing, and the web members are made of 80×80×5mm square tubing. Two spiral net 11 running support rails are arranged within the operating area of ​​each spiral net 11 section to help the spiral net 11 resist the impact of water flow and maintain its operating trajectory.

[0041] The machine head sits on steel platform 7 and mainly consists of the machine head frame, main shaft system, steering sprocket assembly system, and motor reducer. The machine head frame is the foundation for mounting equipment and shafts on the machine head, and must have a certain load-bearing capacity to ensure its rigidity and stability. The main body of the machine head frame is welded from 100×100×6mm square tubing, and the interior uses 80×80×5mm square tubing to form a truss structure, saving materials and providing high strength. The frame weighs approximately 1.3t.

[0042] The spinning net 11 sequentially circles the upper steering sprocket assembly, the main shaft system, and the lower steering sprocket assembly, forming an approximate greater than sign (>) running trajectory inside the head frame. The motor and reducer are symmetrically distributed and fixed above the head, simultaneously driving the main shaft system to move the spinning net 11. The steering sprocket assembly is designed as a rotatable cantilever structure, engaging the steering sprockets with the upper and lower steering mechanisms of the spinning net 11 frame along a vertical tangent. When the spinning net 11 is running, the steering sprockets are in the extended state and remain locked. When the support frame 16 needs emergency lifting, the spinning net 11 is first released, then the steering sprocket assembly is unlocked and rotated downwards to avoid the upward space of the support frame 16.

[0043] The algae separation system consists of a spray device and a water pump, and its main function is to separate algae from the spiral net 11.

[0044] A row of nozzles 9 is arranged on the back of the vortex net 11. Clean water is sprayed from the nozzles 9 in a fan shape. The spray areas overlap and form a line like a waterfall. The water flow washes the algae off the surface of the vortex net 11, achieving the purpose of removing algae. The clean water spraying is directly taken from the channel, and the source of the working medium is convenient. The spraying method is relatively conventional, with low technical difficulty and easy adjustment of spray distance, angle and range.

[0045] The algae-water separation system 10 consists of a conveying trough, a vibrating separation device, a belt elevator, and a collection tank. The conveying trough is installed below the spray device at the machine head, parallel to the main shaft, and runs through the heads of the two algae-blocking devices. The conveying trough has a certain slope, with the lower end near the bank. The algae-water mixture flows out from the lower end along the slope and enters the vibrating separation device. The vibrating separation device has separation and conveying functions, separating the algae and water. After separation, the water is discharged back into the channel, and the algae fall from the discharge port to the belt elevator, which then transports the algae to the collection tank.

[0046] The algae-blocking system is distributed across the four orifices of the inlet maintenance gate. Each orifice is equipped with a vortex net 11 mechanism and a support frame mechanism arranged according to the water flow direction. Two sets of automatic adjustment and emergency lifting systems are installed above the orifices: one is the automatic water depth adjustment system for the vortex net 11, and the other is the support frame lifting system for the vortex net 11. The automatic water depth adjustment system for the vortex net 11 has a capacity of 2×160kN, a working stroke of 9.8m, and a centralized dual-point drive. Both ends are driven synchronously via a transmission shaft. Due to the orifice structure, the distance between the lifting points of the two middle orifices is 7800mm, and the distance between the lifting points of the two side orifices is 6680mm. The maximum lifting speed of the vortex net 11 is 0.26 meters per minute, the motor power is 7.5kW, the screw 3 is 11140mm long, and the screw 3 has a diameter of Tr95×18. Its function is to automatically raise the outlet height of the vortex net 11 when the vortex net 11 mechanism's rotation system jams or is overloaded, causing the upstream water level to rise, and then lock it in its current position using the self-locking property of the screw 3.

[0047] The automatic water depth adjustment system of the spiral net 11 consists of a variable frequency motor, an intermediate planetary gear 8 reducer, an intermediate bevel gear 8 right angle reducer, an intermediate frame, a drive shaft, two end bevel gear 8 right angle reducers, self-aligning cylindrical roller bearings and bearing housings, trapezoidal screw 3, two end frames, self-aligning trapezoidal nuts, a stroke control system, an upper limit switch, a power cabinet, a control cabinet, a display system, and a control system.

[0048] The variable frequency motor is assembled on the intermediate planetary gear 8 reducer. The intermediate planetary gear 8 reducer is installed perpendicularly to the intermediate bevel gear 8 right-angle reducer. The intermediate bevel gear 8 right-angle reducer is connected to the two end bevel gear 8 right-angle reducers by a drive shaft. The upper end of the trapezoidal screw 3 is mounted on a self-aligning cylindrical roller bearing, and the lower end of the trapezoidal screw 3 is screwed into a self-aligning trapezoidal nut. The self-aligning trapezoidal nut is fixedly installed on the spindle frame 11. The variable frequency motor, planetary gear 8 reducer, intermediate bevel gear 8 right-angle reducer, and two end bevel gear 8 right-angle reducers are assembled in the factory and subjected to load tests. The drive shaft, trapezoidal screw 3, self-aligning cylindrical roller bearing and bearing housing, self-aligning trapezoidal nut, and frame are installed on-site. The drive shaft is made of 35# steel and tempered, and the transmitted torque meets the lifting force requirement of 160kN. The length meets two specifications of lifting point spacing: 3340mm and 3900mm. Trapezoidal screw 3, specification Tr95×18, pitch 18mm, made of 45# steel, integral forging, surface tempered, can withstand 160kN lifting force.

[0049] The self-aligning trapezoidal nut consists of a Q355B outer shell, a nut seat, a copper-based inlaid self-lubricating plate, a nut, a wave spring, a bottom plate, and bolt connectors. The nut seat and nut can withstand a lifting force of 160kN with a safety margin. The wave spring has an outer diameter of less than 240mm, an inner diameter of more than 120mm, a free height of more than 300mm, a compression of not less than 200mm, and an initial installation pressure of 20-50kg.

[0050] Operating principle: When the slewing system of the vortex net 11 mechanism is jammed or overloaded, causing the upstream water level to rise, the current of the slewing motor of the vortex net 11 gradually increases. When it increases to a certain value, the reduction motor of the automatic adjustment and emergency lifting system is energized to drive the trapezoidal screw 3 to rotate. The trapezoidal nut moves upward on the trapezoidal screw 3, thereby driving the vortex net 11 to move upward, lift it out of the water, and reduce water resistance.

[0051] Control System: An automatic adjustment and emergency lifting system control cabinet is installed outdoors and operates continuously from May to August each year. It features PLC process control; a touchscreen and display screen are not mandatory. Control components include a variable frequency motor, a travel controller, and an upper limit switch. The control cabinet housing is made of stainless steel and designed for outdoor waterproofing. Electrical components use internationally recognized standard parts that are replaceable, ensuring good performance and strong versatility and interchangeability. Control and Protection: The full-stroke vertical movement of the nut on the trapezoidal screw 3 is monitored by the travel control system. The travel and position are displayed on the control cabinet. When the nut rises to the upper limit switch, or the motor current increases to the set value, the motor is powered off and a fault alarm is triggered. Data related to monitoring and display requires a relevant RS485 communication address for signal acquisition.

[0052] Self-repair system: When the spiral net 11 is lowered to its lower limit and is still descending, the trapezoidal nut disengages from the engaging section of the trapezoidal screw 3 and enters the optical shaft section, causing the reduction motor to idle. Only when the reduction motor of the automatic adjustment and emergency lifting system rotates in the opposite direction (lifting state) will the trapezoidal nut move upward and enter the engaging section of the trapezoidal screw 3, achieving self-repair. The capacity and configuration of the spiral net 11 support frame lifting system are the same as those of the spiral net 11 lifting system. Its function is to lower the spiral net 11 support frame during algae prevention; after algae prevention is completed, it raises the spiral net 11 support frame above the water surface and locks it above the orifice.

[0053] The composition, operating principle, and fault self-repair system of the spiral net 11 support frame lifting system are the same as those of the spiral net 11 water depth automatic adjustment system.

[0054] Communication requirements for automatic adjustment and emergency lifting control system: Automatic adjustment and emergency lifting mechanism 2 shall provide a reliable control system. Its electrical control cabinet shall be an outdoor rainproof double-door cabinet with necessary local indicator lights and control buttons, but touch screen and its screen display are not required.

[0055] To ensure the driving capability of the algae blocking equipment, the selection of motor and reducer needs to be designed according to the load. The selected motor is an 11kW 8-pole three-phase asynchronous frequency conversion motor, and the speed is reduced by a reducer. A cycloidal pinwheel reducer with a reduction ratio of 59 is proposed to be selected.

[0056] Based on the calculation and analysis of the algae interception device's interception capacity, when the algae-intercepting vortex net 11 operates continuously at an average speed of 0.12 m / s, and the algae attached to the vortex net 11 maintains an average thickness of 3 mm and a uniform distribution ratio of 40%, the interception capacity can reach the rated value of 235 t / d. Combined with the analysis results of the algae interception device's impact on water backflow, the water head difference between upstream and downstream areas caused by the algae interception device during normal operation should not exceed 30 cm.

[0057] When the amount of algae coming from the upstream of the main canal is less than 235t / d and the head difference of the backwater in the device is less than 20cm, the device can be put into water and operated, and the operating speed of the vortex screen 11 is kept at 0.05m / s.

[0058] When the algae inflow from the upstream of the main canal exceeds 235 t / d or the head difference of the backwater reaches 20 cm, the rotation speed of the rotary screen 11 is gradually increased to 0.12 m / s using a multi-stage speed control method, maintaining operation during this period to ensure that the head difference does not exceed 20 cm. When the rotation speed of the rotary screen 11 is increased to 0.12 m / s and maintained in operation, if the head difference still exceeds 20 cm, the lifting equipment immediately lifts the rotary screen 11 at a speed of 0.1 m / min (at which point the rotary screen 11 stops operating), reducing the water depth of the rotary screen 11 by 0.5 m. The rotary screen 11 is then restarted at a rotation speed of 0.12 m / s to ensure that the head difference does not exceed 20 cm. After the first lift, the vortex net 11 runs at a speed of 0.12 m / s. If the water head difference still exceeds 20 cm, a second lift is performed (the lift height is tentatively set at 0.5 m). The vortex net 11 is restarted and kept running at a speed of 0.12 m / s. If the water head difference still exceeds 20 cm, a third lift is performed, and the cycle is repeated.

[0059] After 10 lifts (reducing the water depth to approximately 5m), maintain the rotating screen 11 at a speed of 0.12m / s to ensure the backwater head difference does not exceed 30cm. When the backwater head difference reaches 30cm, immediately lift the rotating screen 11 at a speed of 0.1m / min (at which point the rotating screen 11 stops operating), reducing the water depth of the rotating screen 11 by 0.5m. Start the rotating screen 11 at a speed of 0.12m / s, ensuring the head difference does not exceed 30cm. If the backwater head difference still reaches 30cm, repeat the lifting and operation cycle.

[0060] If, during normal operation of the algae blocking device, the water head difference exceeds 30cm or the spiral screen 11 cannot rotate, the emergency lifting procedure should be initiated immediately. The lifting equipment should immediately lift the spiral screen 11 to above the water surface at a speed of 0.26m / min. After inspection and repair, it can be put back into the water for operation.

[0061] During non-algae interception periods, the lifting equipment raises the algae-blocking vortex net 11 and support frame 16 to a height of 0.4m above the water surface and locks them in place. During the locking period, the net type can be changed or cleaned, and the equipment can be inspected and maintained.

[0062] It should be noted that the terms "first, second, and third" used in this utility model are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0063] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any modifications or variations.

Claims

1. An algae-blocking machine with a liftable algae-blocking net, characterized in that: include The structural system includes a gate pier support structure, a steel platform and steel columns and guide channels fixedly installed on the gate pier support structure, which are used to form an overall frame. The interception and removal system includes a support frame, a rotating net flatly attached to the support frame, a drive head set on the upper part of the support frame, and an algae net separation system; it is used to intercept and remove algae. An algae-water separation system, comprising a vibrating screen, a conveyor belt, and a collection box, is used to separate algae and water; An automatic adjustment and emergency lifting system, including a hoist and a drive unit, is used to lift the fishing barrier system; Electrical and control equipment, including control cabinets and power supply equipment electrically connected to the algae-water separation system and the automatic regulation and emergency lifting system.

2. The algae-blocking machine with a liftable algae-blocking net according to claim 1, characterized in that: The guide channel and steel platform are fixedly installed on the gate pier. A steel column is provided on the upper part of the steel platform. A hoisting platform is connected to the top of the guide channel and the steel column. A lifting mechanism is provided inside the hoisting platform. The lifting mechanism includes a screw and is connected to the support frame through the screw. The hoisting mechanism drives the support frame to slide up and down in the guide channel.

3. The algae-blocking machine with a liftable algae-blocking net according to claim 2, characterized in that: The guide channel includes an upper guide channel and a lower guide channel. The upper guide channel is located above the steel platform, and the lower guide channel is located below the steel platform.

4. The algae-blocking machine with a liftable algae-blocking net according to claim 1, characterized in that: The support frame is also provided with a spinning net support, and gears are provided at both the upper and lower ends of the spinning net support, and the spinning net is wound on several gears. The drive device is mounted on a steel platform and is connected to a main shaft system. An upper steering sprocket set and a lower steering sprocket set are also provided on the steel platform. The spinning net extends toward the steel platform and passes over the upper steering sprocket set, the main shaft system, and the lower steering sprocket set.

5. The algae-blocking machine with a liftable algae-blocking net according to claim 4, characterized in that: The steel platform is also equipped with a nozzle, the nozzle of which is positioned diagonally downwards and toward the rotating mesh.

6. The algae-blocking machine with a liftable algae-blocking net according to claim 5, characterized in that: A water conveying trough is provided at the bottom of the steel platform. The water conveying trough is connected to the algae-water separation system and is located below the nozzle.

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