A center rotating mud scraping mechanism suitable for non-centrally symmetric pool
By designing a central rotating sludge scraping mechanism and utilizing the cooperation of a drive motor and scraper arm, the problem of dead angles in sludge scraping in non-centrally symmetrical water tanks has been solved, achieving efficient sludge removal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PENYAO ENVIRONMENTAL PROTECTION
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional mobile scraper assemblies cannot effectively remove sludge in non-centrally symmetrical pools, especially in the inner corner areas where they create dead zones for sludge removal, thus affecting the sludge removal effect.
Design a centrally rotating sludge scraping mechanism, including a drive motor, a drive frame, a scraper arm, and a scraper assembly. The drive motor drives the scraper arm to rotate, and in conjunction with the slider and the linkage arm, the scraper arm can freely extend and retract to adapt to the shape of a non-centrally symmetrical pool and complete the scraping of sludge.
It achieves effective sludge removal from non-centrally symmetrical water tanks, avoids dead zones in sludge removal, and improves the sludge removal effect.
Smart Images

Figure CN224524043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sludge scraping, specifically a central rotating sludge scraping mechanism suitable for non-centrally symmetrical water tanks. Background Technology
[0002] After prolonged use, a large amount of sludge will settle at the bottom of the pool. For rectangular or cubic pools, simply use a movable scraper to scrape the sludge into the sludge collection tank.
[0003] However, for non-centrally symmetrical pools, such as pentagons, heptagons, and nonagons, since each side has an included angle, the traditional movable scraper assembly will have the scraper blade facing the inner corner when scraping sludge in pentagonal, heptagonal, and nonagonal pools. The inner corner area and the scraper blade can easily form a dead angle area for scraping sludge, which affects the scraping effect.
[0004] Clearly, the movable scraper is not suitable for non-centrosymmetric pools, so a new scraping mechanism needs to be designed to adapt to non-centrosymmetric pools. Utility Model Content
[0005] Purpose of the utility model: To provide a central rotating sludge scraping mechanism suitable for non-centrally symmetrical water tanks, so as to solve the above-mentioned problems existing in the prior art.
[0006] Technical solution: A centrally rotating sludge scraping mechanism suitable for non-centrosymmetric water tanks, comprising:
[0007] A sludge collection tank located in a non-centrally symmetrical pool (located at a position close to the center of the non-centrally symmetrical pool), a drive mechanism mounted on the sludge collection tank, and a sludge scraping assembly connected to the drive mechanism and located in the non-centrally symmetrical pool.
[0008] The drive mechanism includes:
[0009] A drive motor, wherein the output end of the drive motor is provided with a drive frame;
[0010] The sludge scraping assembly includes two sets of sludge scraping units hinged to the drive frame. The two sets of sludge scraping units are arranged in a rotationally symmetrical manner. Each set of sludge scraping units includes:
[0011] The scraper arm is equipped with a scraper assembly, and a slider is slidably fitted at one end of the scraper arm. A rod is provided on the slider.
[0012] A linkage arm, the middle of which is hinged to one end of the drive frame, has an elongated hole at one end that is adapted to the rod body, and the end of the linkage arm with the elongated hole is sleeved on the rod body.
[0013] The other end of the linkage arm of one set of sludge scraping units is hinged to the scraping arm of another set of sludge scraping units;
[0014] This invention utilizes two sets of rotationally symmetrically arranged scrapers to scrape sludge from a non-centrally symmetrical water tank. During scraping, a drive motor rotates the drive frame, causing the scraper arms to rotate. The scraper assembly then picks up the sludge from the non-centrally symmetrical water tank. Due to the special shape of the non-centrally symmetrical water tank, the two scraper arms move within the tank. Through the sliding of the slider, the sliding and rotation of the rod body via the elongated hole at one end of the linkage arm, and the hinged rotation at the other end, each scraper arm can freely extend and retract independently, thus completing the scraping of sludge from the non-centrally symmetrical water tank.
[0015] In a further embodiment, the sludge collection tank is provided with a mounting frame, and the drive motor is mounted on the mounting frame.
[0016] In a further embodiment, a roller frame is hinged to the end of the scraper arm away from the slider, and a movable roller is provided on the roller frame. The movable roller abuts against the pool arm of the non-centrally symmetrical pool.
[0017] By designing a roller at one end and a hinged roller frame, the roller frame can be adapted to fit the pool wall.
[0018] In a further embodiment, the scraper assembly includes:
[0019] Multiple sets of scraper blades are designed and connected to the scraper arm, with a predetermined angle between the scraper blades and the scraper arm;
[0020] A guide scraper is connected to the scraper arm, with one end extending into the sludge collection tank;
[0021] By designing scraper blades and guide scraper blades, the sludge can be scraped into the sludge collection tank as the scraper arm rotates continuously. Each time the scraper arm rotates, the previous scraper blade pushes the sludge to the tail end, and the next scraper blade captures it in the next rotation. This cycle continues until the sludge is pushed to the guide scraper blade, which finally scrapes the sludge into the central sludge collection tank, completing the scraping work.
[0022] Beneficial Effects: This utility model discloses a central rotating sludge scraping mechanism suitable for non-centrally symmetrical water tanks. This utility model uses two sets of sludge scrapers arranged in a rotationally symmetrical manner to scrape the sludge in the non-centrally symmetrical water tank. During scraping, the drive motor drives the drive frame to rotate, which in turn drives the scraper arms to rotate. The scraper assembly then completes the sludge scraping work in the non-centrally symmetrical water tank. Due to the special shape of the non-centrally symmetrical water tank, when the two scraper arms move in the non-centrally symmetrical water tank, the sliding of the slider, the sliding and rotation of the rod body through the elongated hole at one end of the linkage arm, and the hinge rotation at the other end allow each scraper arm to extend and retract freely and independently, thereby completing the sludge scraping work in the non-centrally symmetrical water tank. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of this utility model.
[0024] Figure 2 This is a schematic diagram of the mud scraping component structure of this utility model.
[0025] Figure 3 This is a schematic diagram of the state of this utility model in a non-centrally symmetrical water tank.
[0026] Figure 4 This is a schematic diagram of a non-centrally symmetrical water tank using existing technology with a movable scraper.
[0027] The attached figures are labeled as follows:
[0028] 1. Sludge collection pit;
[0029] 2. Scraper assembly; 21. Scraper arm; 22. Scraper blade; 23. Guide scraper; 24. Slider; 25. Linkage arm; 26. Roller frame; 27. Moving roller;
[0030] 3. Drive mechanism; 31. Drive frame. Detailed Implementation
[0031] This application relates to a central rotating sludge scraping mechanism suitable for non-centrally symmetrical water tanks, which will be explained in detail below through specific embodiments.
[0032] A centrally rotating sludge scraping mechanism suitable for non-centrosymmetric water tanks, as shown in the attached figure. Figure 1 As shown, it includes:
[0033] A sludge collection tank 1 located in a non-centrally symmetrical pool (located at a position close to the center of the non-centrally symmetrical pool), a drive mechanism 3 mounted on the sludge collection tank 1, and a sludge scraping assembly connected to the drive mechanism 3 and located in the non-centrally symmetrical pool.
[0034] Non-centrally symmetrical water tanks are prefabricated water tanks, which are water tanks of various structural forms assembled from various corrugated plates through methods such as splicing, welding, splicing or riveting.
[0035] The corrugated panels of the prefabricated water tank wall are made of various continuously formed waveforms, such as trapezoidal waves, arc waves, sine waves, etc., which are particularly suitable for prefabricated water tank structures with arc steel plates. The sludge is removed from the prefabricated water tank through the sludge scraping mechanism.
[0036] The drive mechanism 3 includes:
[0037] A drive motor, wherein the output end of the drive motor is provided with a drive frame 31;
[0038] As attached Figure 2As shown, the sludge scraping assembly includes two sets of sludge scraping units hinged to the drive frame 31. The two sets of sludge scraping units are arranged in a rotationally symmetrical manner, and each set of sludge scraping units includes:
[0039] Scraper arm 21, on which scraper assembly 2 is provided, and a slider 24 is slidably engaged at one end of scraper arm 21, and a rod is provided on slider 24;
[0040] Linkage arm 25, the middle part of which is hinged to one end of the drive frame 31, and one end of the linkage arm 25 has an elongated hole adapted to the rod body. The end of the linkage arm 25 with the elongated hole is sleeved on the rod body.
[0041] The other end of the linkage arm 25 of one set of sludge scraping units is hinged to the scraping arm 21 of another set of sludge scraping units.
[0042] This invention utilizes two sets of rotationally symmetrically arranged scrapers to scrape sludge from a non-centrally symmetrical water tank. During scraping, a drive motor rotates the drive frame 31, causing the scraper arm 21 to rotate. This, in turn, allows the scraper assembly 2 to collect the sludge from the non-centrally symmetrical water tank. Due to the special shape of the non-centrally symmetrical water tank, the two scraper arms 21 move within the tank. Through the sliding of the slider 24, the sliding and rotation of the rod body via the elongated hole at one end of the linkage arm 25, and the hinged rotation at the other end, each scraper arm 21 can freely extend and retract independently, thus completing the scraping of sludge from the non-centrally symmetrical water tank.
[0043] The sludge collection tank 1 is equipped with a mounting frame, and the drive motor is mounted on the mounting frame.
[0044] The scraper arm 21 is hinged to a roller frame 26 at the end away from the slider 24. The roller frame 26 is equipped with a movable roller 27, which abuts against the pool arm of the non-centrally symmetrical pool.
[0045] By designing a roller at one end and a hinged roller frame 26, the roller frame 26 can be adapted to the pool wall.
[0046] The scraper assembly 2 includes:
[0047] Multiple sets of scraper blades 22 are designed and connected to the scraper arm 21. There is a predetermined angle between the scraper blades 22 and the scraper arm 21.
[0048] The guide scraper 23 is connected to the scraper arm 21, with one end extending into the sludge collection tank 1;
[0049] The angle between the scraper blade 22 and the scraper arm 21 is 45°, and the multiple scraper blades 22 have overlapping areas;
[0050] By designing the scraper blade 22 and the guide scraper blade 23, the sludge can be scraped into the sludge collection tank 1 as the scraper arm 21 rotates continuously. Each time the scraper arm 21 rotates, the previous scraper blade 22 pushes the sludge to the tail end, and the next scraper blade 22 captures it in the next rotation. This cycle continues until the sludge is pushed to the guide scraper blade, which finally scrapes the sludge into the central sludge collection tank 1, thus completing the sludge scraping work.
[0051] The appendix Figure 3 The diagram shows the two sets of scraper arms 21 in different states.
[0052] Working principle description: During operation, the drive motor drives the drive frame 31 to rotate, which in turn drives the linkage arm 25 to rotate, and then drives the scraper arm 21 to rotate. During rotation, the guide wheel is in contact with the centrally symmetrical water tank. When the scraper arm 21 moves, and the tank wall changes, the slider 24 slides on the scraper arm 21. Simultaneously, the elongated hole at one end of the linkage arm 25 engages with the hinge at the other end of the linkage arm 25, allowing each scraper arm 21 to extend and retract freely and independently. (For specific operation details, see attached diagram.) Figure 2 Taking the above set of sludge scraping units as an example, when the scraper arm 21 retracts due to contact with the pool wall, the scraper arm 21 moves along the slider 24, and at the same time drives the linkage arm 25 to move (to adapt), forming an adaptive operation to the changes in the pool wall. As the scraper arm 21 continues to rotate, each time the scraper arm 21 rotates, the previous scraper plate 22 pushes the sludge to the tail end, and the next scraper plate 22 captures it in the next rotation. This cycle continues until the sludge is pushed to the guide scraper. The guide scraper finally scrapes the sludge to the central sludge collection tank 1, completing the sludge scraping work.
[0053] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.
Claims
1. A centrally rotating sludge scraping mechanism suitable for non-centrosymmetric water tanks, comprising: A sludge collection tank (1) located in a non-centrally symmetrical water tank, a drive mechanism (3) installed on the sludge collection tank (1), and a sludge scraping assembly connected to the drive mechanism (3) and located in the non-centrally symmetrical water tank; The characteristic feature is that the driving mechanism (3) comprises: A drive motor, wherein the output end of the drive motor is provided with a drive frame (31); The sludge scraping assembly includes two sets of sludge scraping units hinged to the drive frame (31). The two sets of sludge scraping units are arranged in a rotationally symmetrical manner. Each set of sludge scraping units includes: Scraper arm (21), on which a scraper assembly (2) is provided, and a slider (24) is slidably fitted at one end of the scraper arm (21), and a rod is provided on the slider (24); Linkage arm (25), the middle part of the linkage arm (25) is hinged to one end of the drive frame (31), one end of the linkage arm (25) has an elongated hole adapted to the rod body, and the end of the linkage arm (25) with the elongated hole is sleeved on the rod body. The other end of the linkage arm (25) of one set of sludge scraping units is hinged to the scraper arm (21) of another set of sludge scraping units.
2. The central rotating sludge scraping mechanism suitable for non-centrosymmetric water tanks according to claim 1, characterized in that: The sludge collection tank (1) is equipped with an installation frame, and the drive motor is mounted on the installation frame.
3. The central rotating sludge scraping mechanism suitable for non-centrosymmetric water tanks according to claim 1, characterized in that: The scraper arm (21) is hinged to a roller frame (26) at the end away from the slider (24). The roller frame (26) is provided with a movable roller (27), which abuts against the pool arm of the non-centrally symmetrical pool.
4. A central rotating sludge scraping mechanism suitable for non-centrosymmetric water tanks according to claim 1, characterized in that: The scraper assembly (2) includes: Multiple sets of scraper blades (22) are designed and connected to the scraper arm (21). The scraper blades (22) and the scraper arm (21) have a predetermined angle. The guide scraper (23) is connected to the scraper arm (21) and extends one end into the sludge collection tank (1).