System for shoveling and scraping algae sediments on surfaces of ditches
By designing a ditch surface algae deposit scraping system, which uses a negative pressure box and telescopic scraper to automatically clean algae deposits, the problems of reduced water flow and filter plate clogging caused by algae deposits are solved, water flow capacity and water quality are improved, and cleaning costs are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
- Filing Date
- 2024-10-15
- Publication Date
- 2026-04-17
AI Technical Summary
Algae deposits in ditches reduce water flow, clog filter plates, and deteriorate water quality. Traditional cleaning methods are inefficient and consume a lot of manpower and resources.
Design a system for scraping algae deposits on the surface of ditches, including a negative pressure box, a telescopic scraper device and a water pumping device. Through the cooperation of the filter screen in the negative pressure box and the telescopic scraper device, the automatic scraping and collection of algae deposits can be achieved.
It achieves efficient cleaning of algal deposits, avoids filter plate clogging, improves water flow capacity and water quality, and reduces manpower and material consumption.
Smart Images

Figure CN121875326A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of water area cleaning, and in particular to a system for scraping algae deposits from the surface of ditches. Background Technology
[0002] The water flow in ditches is usually slow, especially in some branch ditches or small ditches. The slow water flow is not conducive to the diffusion and washing away of algae and sediments, making it easy for algal deposits to gradually accumulate on the surface of the ditch.
[0003] These algal deposits pose numerous problems for the normal operation of ditches. First, they reduce the effective cross-sectional area of the ditches, decreasing water flow capacity and affecting irrigation and drainage efficiency. Second, algal deposits breed various bacteria and microorganisms, deteriorating water quality and negatively impacting the surrounding environment and ecosystem. Cleaning these algal deposits requires significant manpower, resources, and time. Traditional filtration devices rely primarily on water pumps, and as algal deposits are continuously drawn in, a large amount of impurities gradually accumulates on the filter plates. Algae themselves are sticky and easily adhere to the filter screen surface; combined with the accumulation of other solid particles, this quickly leads to clogging of the filter plate pores. Once clogged, the equipment needs to be shut down for cleaning, and the more polluted the water, the more frequently the equipment needs to be cleaned, resulting in low operating efficiency. Summary of the Invention
[0004] The purpose of this invention is to solve the above-mentioned problems and provide a system for scraping algae deposits on the surface of ditches.
[0005] The technical solution of the present invention is: a ditch surface algae deposit scraping system, including a negative pressure box and a telescopic scraper device installed inside the negative pressure box. The negative pressure box has a water inlet at the center of the front and a water inlet at the upper left corner. The negative pressure box has a filter screen and a groove for fixing the filter screen, which is fitted into the groove. The filter screen is arranged parallel to the side where the water outlet is located. The telescopic scraper device includes guide rails, a telescopic scraper, and a drive motor; two guide rails are arranged in parallel; a slider is provided at the end of the telescopic scraper, which cooperates with the guide rail; the drive motor is connected to a telescopic push rod, which is connected to the telescopic scraper; the telescopic push rod is arranged parallel to the guide rails. After the drive motor is started, the telescopic push rod connected to it moves the telescopic scraper along the guide rails in parallel, scraping the algae deposits on the filter screen to the bottom of the negative pressure box.
[0006] Preferably, the outlet is connected to an external pumping device. The pumping device drains the water from the negative pressure tank, providing a low-pressure environment inside the negative pressure tank.
[0007] Preferably, the telescopic scraper includes a scraper, a telescopic sleeve, a telescopic plate, a lifting plate, and a telescopic push rod; the telescopic scraper structure is formed by connecting them in sequence to form a telescopic scraper device.
[0008] The telescopic scraper device features a hollow structure for both the telescopic plate and the lifting plate, which are connected to a traction rope. The device also includes two spring push rods. The traction rope passes between the telescopic plate and the lifting plate and is connected to the telescopic sleeve. By starting the winding machine, the telescopic scraper device pushes the algae deposits to the cleaning port. After the winding machine stops, the two spring push rods push the telescopic scraper device back to its position before the winding machine started.
[0009] The device also includes guide rollers positioned along the path of the traction rope. The traction rope's path is controlled by the guide rollers to prevent it from causing wear and tear on other components.
[0010] The negative pressure box is equipped with a cleaning port at the bottom. By opening the discharge port cover, algae deposits can be removed from the negative pressure box.
[0011] The telescopic scraper has two guide rails on its telescopic sleeve, telescopic plate, and bottom surface; the hollow interior bottom side of the telescopic plate and lifting plate has two grooves; the grooves are parallel to the guide rails and cooperate with each other. The cooperation between the guide rails and grooves makes the telescopic scraper structure smoother and more stable.
[0012] Preferably, three guide rollers are provided, which are respectively fixed to the tail of the lifting plate, the inner side of the negative pressure box, and the outer side. The guide rollers are used to control the path of the traction rope.
[0013] The beneficial effects of this invention are as follows: The ditch surface algae deposit scraping system of this invention is connected to a pumping system at the outlet to provide a low-pressure environment inside the negative pressure box. After the water in the ditch enters the negative pressure box from the inlet, the algae and its deposits in the water remain on the filter screen plate, and the filtered water is discharged from the outlet. The drive motor drives the telescopic plate structure of the telescopic scraper device to move on a movable guide rail, scraping the algae deposits to the bottom of the negative pressure box. The traction rope is pulled by the winding machine, and the scraper of the telescopic scraper structure brings the algae deposits to the deposit outlet at the bottom of the negative pressure box. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the ditch surface algae deposit scraping system of the present invention. Figure 1 ; Figure 2 yes Figure 1 Top view; Figure 3 yes Figure 1 The front view; Figure 4 This is a top view of the telescopic device; Figure 5 yes Figure 4 AA section view; Figure 6 This is a structural diagram of the telescopic device; Figure 7 yes Figure 6 Enlarged view of section I; Figure 8 This is a structural diagram of the lifting device; Figure 9 This is a schematic diagram of the structure of the ditch surface algae deposit scraping system of the present invention. Figure 2 (Remove the negative pressure box).
[0015] In the diagram: 101. Outlet, 102. Inlet, 103. Drive motor, 104. Telescopic push rod, 105. Discharge port cover, 201. Winding machine, 301. Filter screen, 400. Guide roller A, 401. Guide roller B, 402. Guide roller C, 403. Traction rope, 501. Moving guide rail, 601. Telescopic sleeve, 602. Telescopic plate, 603. Lifting plate, 604. Spring push rod, 701. Scraper. Detailed Implementation
[0016] Example 1: See Figure 1-9 An algal sediment collection system for channel slopes; A system for scraping algae deposits on the surface of ditches includes a negative pressure box 100 and a telescopic scraper device disposed inside the negative pressure box 100. The negative pressure box 100 has an inlet 102 located at the center of the front and an inlet 102 located at the upper left corner. The negative pressure box 100 has a filter screen 301 and a groove for fixing the filter screen 301 inside. The filter screen 301 is fitted into the groove and is arranged parallel to the side where the outlet 101 is located. The telescopic scraper device includes a moving guide rail 501, a retractable scraper device, a winding machine 201, a drive motor 103, and a guide roller; two moving guide rails 501 are arranged in parallel; a slider is provided at the end of the retractable scraper device, which cooperates with the moving guide rail 501; the drive motor 103 is connected to a telescopic rod, which is connected to the retractable scraper device; the telescopic rod 104 is arranged parallel to the moving guide rail 501. After the drive motor 103 is started, the telescopic rod 104 connected to it moves the retractable scraper device parallel to the moving guide rail 501, scraping the algae deposits on the filter screen 301 to the bottom of the negative pressure box 100.
[0017] The outlet 101 is connected to an external pumping device. The pumping device discharges water from the negative pressure tank 100, providing a low-pressure environment inside the negative pressure tank 100.
[0018] The telescopic sleeve 601, telescopic plate 602, and bottom surface of the described scraper device are provided with two moving guide rails 501; the hollow inner bottom sides of the telescopic plate 602 and lifting plate 603 have two grooves; the grooves are parallel to and cooperate with the moving guide rails 501. The scraper device moves along them, and the cooperation between the moving guide rails 501 and the grooves makes the scraper device structure more stable.
[0019] The telescopic scraper device 600 includes 701, a telescopic sleeve 601, a telescopic plate 602, a lifting plate 603, and a telescopic push rod device; these are connected in sequence to form the telescopic scraper device structure.
[0020] In the telescopic scraper device, the telescopic plate 602 and the lifting plate 603 are hollow structures and connected to the traction rope 403. The telescopic scraper device is equipped with two spring push rods 604. The traction rope 403 passes between the telescopic plate 602 and the lifting plate 603 and is connected to the telescopic sleeve 601. By starting the winding machine 201, the traction rope 403 pulls the telescopic sleeve 601 through guide rollers A 400, B 401, and C 402, causing the telescopic sleeve 601 and the telescopic plate 602 to retract into the hollow interior of the lifting plate 603. At this time, the hanging plate 701 of the telescopic scraper device pushes the algae deposits to the cleaning port. Afterwards, when the winding machine 201 stops and is no longer under force, the two spring push rods 604 push the telescopic scraper device back to the state before the winding machine 201 started.
[0021] The negative pressure chamber 100 has a cleaning port at the bottom. After a scraper cleaning is completed, the discharge port cover 105 on the bottom side can be opened to remove the algae deposits from the negative pressure chamber 100. This quickly completes the previous filtration work after cleaning the algae deposits inside the negative pressure chamber 100.
[0022] The working process of this embodiment includes the following steps: ① The pumping device is connected to the outlet 101 of the negative pressure box 100, and the inlet 102 is connected to the water area that needs to be cleaned.
[0023] ② Start the pumping device, and the water flows into the negative pressure box 100. The device starts filtering, and the telescopic scraper device is in the retracted state.
[0024] ③ The water is continuously filtered. During the filtration process, algae deposits adhere to the filter screen.
[0025] ④ After filtration for a period of time, the water flow decreases, and the filter screen 301 is cleaned. The winding machine 201 slowly rotates in the opposite direction, and the telescopic scraper device gradually extends until the front scraper is in contact with the filter screen. The drive motor 103 starts, and the telescopic push rod 104 drives the telescopic scraper device to move along the moving guide rail 501. The scraper 701 of the telescopic scraper device will scrape off the algae deposits on the filter screen 301. The algae deposits will eventually remain at the bottom of the negative pressure box 100.
[0026] ⑤ The winding machine 301 starts, the traction rope 201 retracts, pulling the telescopic scraper device, the telescopic sleeve 601 enters the telescopic plate 602, the telescopic plate 602 enters the lifting plate 603, and the scraper 701 pushes the algae deposit scraped off along the bottom of the negative pressure box 100 to the discharge port.
[0027] ⑥ Open the discharge port cover 105 at the bottom of the negative pressure box to collect algal deposits.
[0028] ⑦ Close the discharge port cover 105, reverse the drive motor 103, and the telescopic push rod 104 pulls the telescopic scraper device above the negative pressure box 100, and the telescopic scraper device returns to its initial position.
[0029] ⑧ Continue filtering algae deposits. When the water flow decreases, repeat steps ④-⑦ above.
[0030] ⑨ After the water to be filtered is finished, turn off the pumping device and repeat steps ④-⑦ to complete the filtration process.
[0031] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that the drive motor 103 and the telescopic rod 104 are replaced with a hydraulic pump and a hydraulic cylinder. The replaced equipment has strong sealing performance, is not easy to get water in the humid environment, has strong corrosion resistance, and the hydraulic equipment is more stable and durable than the motor equipment.
Claims
1. A system for scraping algae deposits on the surface of ditches; characterized in that: it includes a negative pressure box and a telescopic scraper device disposed inside the negative pressure box, wherein a water inlet is disposed at the center of the front of the negative pressure box and a water inlet is disposed at the upper left corner of the top; a filter screen plate and a groove for fixing the filter screen plate are disposed inside the negative pressure box, the filter screen plate being fitted into the groove, and the filter screen plate being disposed parallel to the side where the water outlet is located; The telescopic scraper device includes a guide rail, a telescopic scraper, and a drive motor; two guide rails are arranged in parallel; a slider is provided at the end of the telescopic scraper, which cooperates with the guide rail; the drive motor is connected to a telescopic push rod, which is connected to the telescopic scraper; the telescopic push rod is arranged in parallel with the guide rail.
2. The ditch surface algae deposit scraping system according to claim 1, characterized in that: The outlet is connected to an external pumping device.
3. The ditch surface algae deposit scraping system according to claim 1, characterized in that: The telescopic scraper includes a scraper, a telescopic sleeve, a telescopic plate, a lifting plate, and a telescopic push rod; the telescopic plate and the lifting plate in the telescopic scraper device are hollow structures and connected to a traction rope; the telescopic scraper device is equipped with two spring push rods.
4. The ditch surface algae deposit scraping system according to claim 1, characterized in that: The device also includes a guide roller, which is positioned along the path of the traction rope.
5. The ditch surface algae deposit scraping system according to claim 1 is characterized in that: a discharge port is provided at the bottom of the negative pressure box.
6. The ditch surface algae deposit scraping system according to claim 3, characterized in that: The telescopic scraper has two guide rails on its telescopic sleeve, telescopic plate, and bottom surface; the telescopic plate and lifting plate have two grooves on their hollow inner bottom sides; the grooves are parallel to the guide rails and cooperate with each other.
7. The ditch surface algae deposit scraping system according to claim 4, characterized in that: The guide rods are provided in three parts, which are respectively fixed to the tail of the lifting plate, the inner side and the outer side of the negative pressure box.