A device for removing sludge at the end of an inlet channel of a rectangular circular-feed and circular-discharge two-sedimentation-tank

Abstract

The utility model discloses a kind of water inlet channel end of rectangular week in and week out two sedimentation tanks, driving motor is set in water inlet channel end, and it is fixed in pool top by motor support;The output shaft of driving motor is connected with driving sprocket, and the driving sprocket is connected with driven sprocket by second chain;The driven sprocket is coaxially arranged with main shaft sprocket, and the main shaft sprocket is connected with angle shaft sprocket by first chain, and a plurality of scrapers are arranged on the first chain;First chain and scraper are arranged above water inlet channel.Utilize the application by driving motor driving sprocket, chain transmission, realize that scraper continuous circulation operation, replace traditional manual cleaning mode, greatly improve the efficiency of slag scraping;While reducing manpower investment, reduce long-term operation and maintenance labor cost, solve the problem of time-consuming and laborious, low efficiency of manual cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of sewage treatment technology, and in particular relates to a sludge scraping device at the end of the inlet channel of a rectangular perimeter-inlet and perimeter-outlet secondary sedimentation tank. Background Technology

[0002] In the wastewater treatment process system of a wastewater treatment plant, the rectangular circumferential inlet and outlet secondary sedimentation tank is the core facility for achieving sludge-water separation, and its operating status directly affects the stability of the effluent quality. This type of sedimentation tank receives treated water from the preceding process stage through an inlet channel and completes the solid-liquid separation process based on its circumferential inlet and outlet structure design, which is a key link in ensuring that wastewater treatment meets discharge standards. However, rectangular perimeter-inlet and perimeter-outlet sedimentation tanks face a significant problem of scum accumulation during actual operation. Specifically, due to multiple factors, including residual pollutants from previous processes, algae growth caused by sunlight, and microbial metabolism triggered by seasonal temperature changes, a large amount of scum continuously accumulates in the inlet channel. As the water flows towards the middle and later sections of the inlet channel, the flow velocity gradually decreases, and the scum, lacking sufficient kinetic energy, cannot be smoothly discharged through the scum weir, thus accumulating continuously in the inlet channel. After long-term operation, the undischarged scum forms a sludge buildup above the water surface, not only damaging the visual cleanliness of the sedimentation tank but also causing serious functional problems: when the scum accumulation exceeds a critical value, it will overflow the partition wall between the inlet and outlet channels and enter the outlet channel, directly polluting the effluent and failing to meet the preset water quality treatment standards. Currently, the main method for dealing with the aforementioned scum problem is manual cleaning, which has significant limitations: manual cleaning consumes a large amount of manpower and time, and the processing efficiency is low. Therefore, there is an urgent need to develop a technical solution that can efficiently solve the scum problem in the inlet channel of a rectangular perimeter-inlet and perimeter-outlet secondary sedimentation tank. Utility Model Content

[0003] In view of the technical problems mentioned in the background art, the purpose of this application is to provide a slag scraping device at the end of the inlet channel for a rectangular circumferential inlet and outlet secondary sedimentation tank.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: A slag scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank includes a drive motor, a drive sprocket, a second chain, a driven sprocket, a main shaft sprocket, an angle shaft sprocket, a first chain, and a scraper. The drive motor is located at the end of the water inlet channel and is fixed to the top of the pool by a motor bracket. The output shaft of the drive motor is connected to a drive sprocket, which is connected to a driven sprocket via a second chain. The driven sprocket is coaxial with the main shaft sprocket, which is connected to an angle shaft sprocket via a first chain. The first chain is equipped with multiple scrapers. The first chain and scraper are positioned above the water inlet channel.

[0005] The driven sprocket and the main shaft sprocket are mounted on the partition wall of the inlet and outlet water channel via a shaft fixing bracket.

[0006] The angular shaft sprocket is mounted on the partition wall of the inlet and outlet water channel via an angular shaft sprocket bracket.

[0007] The driving sprocket and the driven sprocket are located above the water outlet channel.

[0008] It also includes a scraper monitoring sensor installed on the pool body and a PLC controller for monitoring the scraper, wherein the PLC controller is connected to the scraper monitoring sensor and the drive motor.

[0009] The scraper is installed on half the length of the first chain. When it moves to the lower part of the first chain, it enters the water surface to scrape off the sludge. When the machine stops, it is completely on the upper part of the first chain.

[0010] This also includes a tensioning wheel installed on the partition wall of the inlet and outlet water channel, used to support and tension the first chain, and mounted via a tensioning sprocket bracket.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. Improve slag scraping efficiency and reduce labor costs. By driving a motor to drive sprockets and chains, the scraper can operate continuously in a cycle, replacing the traditional manual cleaning method and greatly improving the efficiency of slag removal. At the same time, it reduces manpower input, lowers the labor costs of long-term operation and maintenance, and solves the problems of time-consuming, labor-intensive and inefficient manual cleaning. 2. Precisely remove scum from the end of the inlet channel to block the path of pollution spread. By using this application, the first chain and scraper are precisely positioned above the inlet channel, and the scraper directly penetrates the water surface to scrape off scum when it moves to the lower part of the chain. This can specifically remove the scum that accumulates at the end of the inlet channel due to the slowing of the water flow, blocking the scum from the source from climbing over the partition wall and entering the outlet channel. This effectively avoids the scum from polluting the effluent and ensures that the sewage treatment meets the discharge standards. 3. Optimize the scraper operation mode to extend equipment lifespan without affecting the water flow pattern in the canal. The scraper is installed on only half the length of the first chain, and when the machine is stopped, it is entirely on the upper part of the chain, which reduces the contact time with water when not in operation. This does not affect the flow pattern of the inlet channel and reduces the rate of corrosion and aging of the scraper caused by long-term immersion. Combined with the smoothness of the chain drive, this further extends the service life of the scraper and transmission components and reduces the frequency of equipment replacement. 4. Stable transmission design ensures operational reliability. Through the multi-stage transmission of the drive sprocket, second chain, driven sprocket, main shaft sprocket, and angle shaft sprocket, combined with the support and tension of the first chain by two tensioning wheels, problems such as chain loosening and deviation are effectively avoided, ensuring stable scraper running trajectory, uniform slag scraping effect, and improving the long-term reliability of the device. 5. Automated and intelligent control enables precise operation and maintenance. Equipped with scraper monitoring sensors and a PLC controller, it can monitor the scraper's operating status in real time and automatically control the start and stop of the drive motor through the PLC, realizing intelligent control of the slag scraping process. It can automatically adjust the operating frequency according to the amount of slag and provide timely warnings of equipment failures, reducing manual intervention and improving the accuracy of operation and maintenance. 6. Modular installation design, highly adaptable and easy to maintain. The drive motor, sprockets, and other components are fixed to the top of the tank and the partition walls of the inlet and outlet channels via brackets, eliminating the need to modify the main structure of the secondary sedimentation tank. This makes installation convenient and adaptable to rectangular circumferential inlet and outlet secondary sedimentation tanks of different sizes. The modular design also facilitates the inspection and replacement of individual components, reducing maintenance difficulty and costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the sludge scraping device at the end of the water inlet channel provided in an embodiment of this application; In the diagram, 1 is the drive motor; 2 is the motor bracket; 3 is the shaft fixing bracket; 4 is the scraper monitoring sensor; 5 is the first chain; 6 is the scraper; 7 is the angle shaft sprocket; 8 is the angle shaft sprocket bracket; 9 is the tension sprocket bracket; 10 is the main shaft sprocket; 11 is the driven sprocket; 12 is the second chain; and 13 is the driving sprocket. Figure 2 This is a side view of the sludge scraping device at the end of the water inlet channel provided in an embodiment of this application. Figure 3 for Figure 2 Schematic diagram of the structure in cross section along direction A; Figure 4 This is a first schematic diagram of the scraper structure in an embodiment of this application; Figure 5 This is a second schematic diagram of the scraper structure in an embodiment of this application; In the diagram, 61 is the scraper connecting block, 62 is the scraper body, and 63 is the rubber scraper blade. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0016] like Figure 1-5 The diagram shows the structure of an embodiment of this application.

[0017] This embodiment provides a slag scraping device at the end of the inlet channel for a rectangular circumferential inlet and outlet secondary sedimentation tank, including a drive motor 1, a drive sprocket 13, a second chain 12, a driven sprocket 11, a main shaft sprocket 10, an angle shaft sprocket 7, a first chain 5, and a scraper 6; The drive motor 1 is located at the end of the water inlet channel and is fixed to the top of the pool by the motor bracket 2; The output shaft of the drive motor 1 is connected to a drive sprocket 13, which is connected to a driven sprocket 11 via a second chain 12. The driven sprocket 11 is coaxially arranged with the main shaft sprocket 10, which is connected to an angle shaft sprocket 7 via a first chain 5. The first chain 5 is provided with a plurality of scrapers 6. The first chain 5 and scraper 6 are positioned above the water inlet channel.

[0018] In use, the drive motor 1 drives the active sprocket 13 to rotate, and the active sprocket 13 drives the driven sprocket 11 to rotate through the second chain 12. The driven sprocket 11, the shaft fixing frame 3, and the main shaft sprocket 10 are installed as a whole, and the driven sprocket 11 and the main shaft sprocket 10 rotate synchronously. The main shaft sprocket 10 drives the first chain 5 to perform cyclical motion. Several scrapers 6 are installed on the first chain 5. When the scrapers 6 pass over the water surface, they can scrape the scum on the water surface to the end of the inlet channel and discharge it through the scum weir gate.

[0019] It should be noted that this application is easy to install, does not require emptying the secondary sedimentation tank, does not affect the normal operation of the water plant, and can be used for installation in newly built plants and renovation of existing plants.

[0020] Preferably, the driven sprocket 11 and the main shaft sprocket 10 are mounted on the partition wall of the inlet and outlet water channel via the shaft fixing bracket 3.

[0021] Preferably, the angular shaft sprocket 7 is mounted on the partition wall of the inlet and outlet water channel via the angular shaft sprocket bracket 8.

[0022] Preferably, the driving sprocket 13 and the driven sprocket 11 are located above the water outlet channel.

[0023] It should be noted that, since the inlet channel is relatively narrow, with a width of only 300-500mm at the end, placing the drive sprocket 13 and driven sprocket 11 on the outlet channel side provides ample space for disassembly and assembly, and will not affect the equipment layout of the inlet channel.

[0024] Preferably, it also includes a scraper 6 for monitoring, a scraper monitoring sensor 4 installed in the pool body, and a PLC controller, wherein the PLC controller is connected to the scraper monitoring sensor 4 and the drive motor 1.

[0025] It should be noted that the slag scraping device can be started on a timer via a PLC controller and can be automatically stopped by detecting the position of the scraper or the number of times the scraper passes the sensor, without requiring manual operation. Furthermore, it should be noted that the PLC controller and sensors used in this application were purchased externally, and their implementation principles utilize well-known technologies, which will not be elaborated upon here.

[0026] Preferably, the scraper 6 is mounted on half the length of the first chain 5, and when it moves to the lower part of the first chain 5 in a cyclical motion, it penetrates the water surface to scrape off the sludge, and when the machine stops, it is entirely on the upper part of the first chain 5.

[0027] Preferably, it also includes a tensioning wheel installed on the partition wall of the inlet and outlet water channel for supporting and tensioning the first chain 5, and mounted via a tensioning sprocket bracket 9 to prevent the first chain 5 from sag excessively.

[0028] In addition, this application provides a novel scraper structure, wherein the scraper 6 is equipped with a rubber scraper blade. The rubber scraper blade attached to the scraper can be customized in size according to the channel width and water depth, allowing for thorough scraping of scum on the liquid surface and walls, achieving the same effect on hardened scum. The scraper 6 includes a scraper connecting block 61, a scraper body 62, and a rubber scraper blade 63. The scraper body 62 is L-shaped, with its upper end connected to the first chain 5 via the scraper connecting block 61. The scraper body 62 and the square rubber scraper blade 63 are connected by bolts.

[0029] It should be noted that all solutions not detailed in this application employ publicly known technologies.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sludge scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank, characterized in that, It includes a drive motor (1), a drive sprocket (13), a second chain (12), a driven sprocket (11), a main shaft sprocket (10), an angle shaft sprocket (7), a first chain (5), and a scraper (6); The drive motor (1) is located at the end of the water inlet channel and is fixed to the top of the pool by a motor bracket (2); the output shaft of the drive motor (1) is connected to a drive sprocket (13), which is connected to a driven sprocket (11) via a second chain (12); the driven sprocket (11) is coaxially arranged with the main shaft sprocket (10), which is connected to an angle shaft sprocket (7) via a first chain (5), and multiple scrapers (6) are provided on the first chain (5); The first chain (5) and scraper (6) are positioned above the water inlet channel.

2. The sludge scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank according to claim 1, characterized in that, The driven sprocket (11) and the main shaft sprocket (10) are mounted on the partition wall of the inlet and outlet water channel via the shaft fixing bracket (3).

3. A sludge scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank according to claim 2, characterized in that, The sprocket (7) is mounted on the partition wall of the inlet and outlet water channel via the sprocket bracket (8).

4. A sludge scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank according to claim 3, characterized in that, The driving sprocket (13) and driven sprocket (11) are located above the outlet channel.

5. A sludge scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank according to claim 1, characterized in that, It also includes a scraper (6), a scraper monitoring sensor (4) installed in the pool body, and a PLC controller, wherein the PLC controller is connected to the scraper monitoring sensor (4) and the drive motor (1).

6. A sludge scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank according to claim 5, characterized in that, The scraper (6) is installed on half the length of the first chain (5). When it moves to the lower part of the first chain (5) in a cycle, it enters the water surface to scrape off the slag. When the machine stops, it is all on the upper part of the first chain (5).

7. A sludge scraping device at the end of the inlet channel of a rectangular circumferential inlet and outlet secondary sedimentation tank according to claim 1, characterized in that, It also includes a tensioning wheel installed on the partition wall of the inlet and outlet water channel for supporting and tensioning the first chain (5) and mounted via a tensioning sprocket bracket (9).

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