Filter pressing water collecting tank cleaning device for water sludge dewatering and volume reduction platform

Abstract

A filter pressing water collecting tank cleaning device for an overwater sludge dewatering and volume reduction platform is mounted on a drain pipe side of a plate-and-frame filter press and is characterized in that a water collecting tank is used for gathering and collecting filter pressing water flowing out of a water outlet of each plate frame of the filter press, and the water collecting tank is fixedly mounted on a side frame of the filter press through a support; a movable scraping plate is arranged in the water collecting tank, and the scraping plate is connected with a driving unit for driving the scraping plate to reciprocate along the direction of the water collecting tank. Compared with the prior art, the utility model has the characteristics of flexible driving mode, optimized scraper design, integrated structural design, enhanced structural strength and convenient maintenance and protection, the operation efficiency, the processing capacity and the service life of the equipment are jointly improved, the cost and the safety risk of manual cleaning are reduced, and remarkable technical advantages and application values are shown.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredging, and in particular relates to a filter press water collecting tank cleaning device for an above-water sludge dehydration and volume reduction platform. Background Art

[0002] Ecological dredging is a key technical means to solve the pollution problem of rivers, lakes and reservoirs. Its core advantage lies in its ability to effectively remove polluted sediments, thereby reducing the release of endogenous pollutants and further improving the water ecological environment. However, in actual application, due to the high water content of sludge and the high transportation cost, the large amount of sludge generated during dredging operations can only be dumped in the form of abandoned soil in the area around the dredging area for natural or artificial dehydration. This practice not only occupies a large amount of land resources for a long time, but also may cause secondary pollution during the long-distance transportation of sludge, bringing additional burden to the environment.

[0003] With the increasing and recurring demand for dredging, the land resources required for local sludge treatment are becoming increasingly scarce. This problem has become more and more urgent and has become an environmental problem that needs to be solved urgently. In order to meet this challenge, an innovative equipment platform came into being, and its publication number is CN117509945A. The equipment platform integrates a suction dredger, a sludge conditioning ship, a filter press and volume reduction ship, and a residual water treatment ship, realizing an integrated process of water operations, greatly improving the efficiency and processing capacity of dredging operations.

[0004] Specifically, the suction dredger is responsible for collecting and transporting sludge, while the sludge conditioning ship removes impurities and regulates the sludge through advanced impurity removal and conditioning systems. Subsequently, the sludge is transported to the filter press volume reduction ship for further screening, impurity removal and dehydration and volume reduction. The filtered mud cake can be transported out through mud barges, effectively avoiding the pollution of water bodies by sludge and solving the problem of land occupation in sludge treatment.

[0005] However, in actual operation, the equipment platform faces a significant technical challenge: the plate and frame filter press used in the water sludge dewatering and volume reduction platform will carry a certain amount of impurities in the produced water. In the early stage of filtration, due to the large water flow, the silt smaller than the filter cloth of the filter press will flow into the tailwater collection tank with the water flow. As the filtration time goes by, the water flow of the produced water gradually decreases, which causes the silt to settle at the bottom of the sump, especially when dealing with the bottom mud of rivers, lakes and reservoirs, the deposition phenomenon is more serious. Frequent deposition not only affects the normal operation of the equipment, but may also have an adverse effect on the water quality of the tailwater.

[0006] Due to the special nature of water operations, the equipment layout needs to be compact, and the space between adjacent plate and frame filter press units is limited, making it impossible to build a walking platform. Therefore, at present, the on-site cleaning of the collection tank is usually carried out one by one by climbing, which is not only time-consuming and laborious but also poses a risk of safety accidents. To solve this technical problem, it is particularly urgent and important to design a cleaning device for the filter press water collection tank applicable to the water-based sludge dewatering and volume reduction platform. The device should be able to clean the sediment regularly and automatically to ensure that the tail water smoothly enters the tail water collection tank, thereby improving the operating efficiency and treatment capacity of the entire equipment platform. Summary of the Invention

[0007] Aiming at the problems existing in the prior art, the present invention provides a cleaning device for a filter press water collection tank used in a water-based sludge dewatering and volume reduction platform, which can automatically clean the sediment, ensure that the tail water smoothly enters the tail water collection tank, and thereby improve the operating efficiency and treatment capacity of the entire equipment platform.

[0008] The present invention is implemented as follows. A cleaning device for a filter press water collection tank used in a water-based sludge dewatering and volume reduction platform is installed on the side of the drain pipe of the plate and frame filter press. It is characterized in that: a collection tank for aggregating and collecting the filter press water flowing out of the water outlet of each plate and frame of the filter press, and the collection tank is fixedly installed on the side frame of the filter press through a bracket;

[0009] A movable scraper is provided in the collection tank, and the scraper is connected to a driving unit that drives the scraper to reciprocate along the direction of the collection tank.

[0010] Preferably, the driving unit includes a motor, the motor is installed on a motor bracket, a driving gear is installed on the output shaft of the motor, a rack is installed on the side wall of the collection tank on the side of the driving gear, the driving gear meshes with the rack, a walking guide groove is installed on the side wall of the collection tank opposite to the rack, a walking wheel is provided in the walking guide groove, and the walking wheel is installed on the motor bracket through a support shaft.

[0011] Preferably, guide wheels are installed on at least two opposite side edges of the motor bracket in the collection tank, and the guide wheels are in contact with the side wall of the collection tank.

[0012] Preferably, the motor is a coaxial double-output motor.

[0013] Preferably, four guide wheels are provided, which are respectively located at the four corners of the motor bracket.

[0014] Preferably, an angle of 15° to 45° is provided between the scraper and the bottom of the collection tank.

[0015] Preferably, the shape of the scraper is an arc structure.

[0016] Preferably, the upper part of the water collecting tank is integrally bent outward to form a rack mounting bracket and a walking guide groove bracket.

[0017] Preferably, reinforcing ribs are provided between the rack mounting bracket and the walking guide groove bracket and the side wall of the water collecting tank.

[0018] Preferably, a protective cover is installed on the rack mounting bracket.

[0019] The advantages and technical effects of the present utility model are as follows: By adopting the above technical solution, an efficient and automated cleaning process is achieved. Through the innovative design of the driving unit, the scraper can move stably back and forth in the water collecting tank, effectively scraping the sediment at the bottom of the tank, avoiding the accumulation of sediments and the impact on the quality of the tail water. At the same time, the device is driven by a motor, combined with the meshing mechanism of the rack and the driving gear and the design of the walking guide groove and the walking wheel, ensuring the stability and directionality of the scraper movement. In addition, its flexible driving method, optimized scraper design, integrated structure design, enhanced structural strength, and convenient maintenance and protection characteristics together improve the operating efficiency, processing capacity, and service life of the equipment, reduce the cost and safety risks of manual cleaning, and demonstrate significant technical advantages and application values. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the present utility model;

[0021] Figure 2 is a structural diagram of the installation position of the cleaning device;

[0022] Figure 3 is a schematic perspective view.

[0023] In the figure, 1. water collecting tank; 1-1. rack mounting bracket; 1-2. walking guide groove bracket; 1-3. reinforcing rib; 2. filter press; 3. scraper; 4. driving unit; 4-1. motor; 4-2. motor bracket; 4-3. driving gear; 4-4. rack; 4-5. walking guide groove; 4-6. walking wheel; 4-7. support shaft; 4-8. guide wheel; 5. protective cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following further describes the present utility model in detail with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the face of the above challenges, especially the problem of frequent sedimentation in the water collection tank caused by impurities produced by the plate-frame filter press in the water sludge dehydration and volume reduction platform, an efficient and safe cleaning device is urgently needed. To this end, the utility model proposes a filter press water collection tank cleaning device specially used for the water sludge dehydration and volume reduction platform. The device is cleverly installed on the drainage pipe side of the plate-frame filter press, aiming to achieve regular automatic cleaning of sediments and ensure that the tail water enters the tail water collection tank smoothly.

[0026] See also Figures 1 to 3 , a filter press water collection tank cleaning device for an aquatic sludge dehydration and volume reduction platform, comprising a water collection tank 1, which is used to collect the filter press water flowing out of each plate frame water outlet of the filter press 2, and the water collection tank is fixedly installed on the side frame of the filter press through a bracket; a movable scraper 3 is provided in the water collection tank, and this scraper is connected to the drive unit 4 and can reciprocate along the direction of the water collection tank, thereby effectively scraping off the silt deposited at the bottom of the tank, avoiding the accumulation of sediments and the impact on the water quality of the tail water. In actual operation, the staff only needs to stand on the existing operating platform and control the drive unit to complete the dredging work. This ingenious design not only improves the cleaning efficiency, but also greatly reduces the safety risks of manual climbing cleaning, and provides a strong technical guarantee for the operation of the aquatic sludge dehydration and volume reduction platform.

[0027] The driving unit 4 includes a motor 4-1, which is mounted on a motor bracket 4-2. A driving gear 4-3 is installed on the output shaft of the motor. A rack 4-4 is installed on the side wall of the water collecting trough on the driving gear side. The driving gear is meshed with the rack. A walking guide groove 4-5 is installed on the side wall on the opposite side of the water collecting trough from the rack. A walking wheel 4-6 is provided in the walking guide groove. The walking wheel is installed on the motor bracket 4-2 through a supporting shaft 4-7.

[0028] The above features constitute an efficient and automated cleaning device for filter press water collection tank as a whole. Specifically, the design of the drive unit 4 realizes the core function of the cleaning device, that is, the scraper 3 is driven to reciprocate in the water collection tank 1 by the rotation of the motor, so as to effectively scrape off the silt deposited at the bottom of the tank. The motor 4-1 is installed on the motor bracket 4-2 as a power source to ensure its stable operation. The output shaft of the motor is equipped with a driving gear 4-3, which is meshed with the rack 4-4 on the side wall of the water collection tank. This design realizes the conversion from motor rotation to linear motion of the scraper, so that the scraper can reciprocate and clean along the direction of the water collection tank. At the same time, the setting of the walking guide groove 4-5 and the walking wheel 4-6 further ensures the stability and guidance of the scraper during movement, and prevents the scraper from deflecting or jamming during the cleaning process. On the whole, these features together constitute a stable and efficient cleaning system, which greatly improves the operating efficiency and processing capacity of the water sludge dehydration and volume reduction platform, and reduces the cost and safety risks of manual cleaning.

[0029] In addition to the above motor drive method, the drive unit can also adopt the way of wire rope traction to realize the reciprocating movement of the scraper along the water collecting tank. Principle: Use wire ropes instead of chains, bypass the pulleys or drums at both ends of the water collecting tank, fix one end, and connect the other end to the scraper. By driving the rotation of the pulley or drum, the wire rope drives the scraper to reciprocate.

[0030] Preferably, guide wheels 4-8 are installed on at least two opposite side edges of the motor bracket in the water collecting tank, and the guide wheels are in contact with the side wall of the water collecting tank. The contact between the guide wheels and the side wall of the water collecting tank provides a stable support and guidance for the motor bracket and the entire drive unit. This helps to prevent the motor bracket from shifting or shaking during the reciprocating movement of the scraper, thereby increasing the overall stability of the cleaning device. As rolling elements, the friction between the guide wheels and the side wall of the water collecting tank is much smaller than sliding friction. This helps to reduce the wear between the motor bracket and the side wall of the water collecting tank and extends the service life of the cleaning device. The contact between the guide wheels and the side wall of the water collecting tank can also help the scraper to reciprocate more precisely along the direction of the water collecting tank. This helps to ensure that the scraper can evenly clean the bottom of the entire water collecting tank and improves the cleaning effect. The design of the guide wheels makes the installation and maintenance of the cleaning device simpler. During installation, just align the guide wheels with the side wall of the water collecting tank; during maintenance, it is also convenient to check and replace the guide wheels without large-scale disassembly and reinstallation of the entire cleaning device.

[0031] Preferably, the motor is a coaxial double-output motor. Since the two output shafts of the coaxial double-output motor rotate synchronously, they can drive the scraper to reciprocate at the same speed. This synchronism helps to reduce the vibration and noise during the operation of the cleaning device, improving the stability and comfort of the equipment. At the same time, the synchronous movement also helps to ensure that the scraper can evenly clean the bottom of the water collecting tank and improves the cleaning effect.

[0032] Preferably, there are four guide wheels, which are respectively located at the four corners of the motor bracket. The design with four guide wheels respectively located at the four corners of the motor bracket significantly enhances the stability, guiding accuracy and adaptability of the cleaning device, effectively disperses the load, extends the service life of the equipment, and provides an important guarantee for improving the cleaning efficiency and reliability of the water sludge dewatering and volume reduction platform.

[0033] Preferably, an angle of 15° to 45° is provided between the scraping plate and the bottom of the water collecting tank. The design of the angle between the scraping plate and the bottom of the tank enables the scraping plate to better fit the bottom of the tank during movement, thereby more effectively scraping off the sludge, impurities, etc. attached to the bottom of the tank. This optimized scraping angle reduces the gap between the scraping plate and the bottom of the tank, improving the thoroughness of cleaning. An appropriate angle can also enhance the scraping force of the scraping plate on the bottom of the tank, making it easier to scrape off stubborn sludge and impurities during the reciprocating movement of the scraping plate, thus improving the cleaning efficiency.

[0034] By adjusting the angle between the scraping plate and the bottom of the tank, it is possible to ensure the cleaning effect while reducing wear and damage to the bottom of the tank. An overly small angle may cause excessive pressure on the bottom of the tank by the scraping plate, thereby accelerating the wear of the bottom of the tank; while an overly large angle may affect the cleaning effect. Therefore, an angle of 15° to 45° is a relatively reasonable range that can achieve a balance between the cleaning effect and the protection of the bottom of the tank.

[0035] A reasonable angle design also helps to extend the service life of the scraping plate. During the reciprocating movement of the scraping plate, it will be subject to certain friction and impact. An appropriate angle can reduce the influence of these adverse factors on the scraping plate, thereby reducing the wear rate of the scraping plate.

[0036] The angle range of 15° to 45° has a certain degree of flexibility and can be adjusted according to different working conditions and requirements. For example, when dealing with relatively viscous or large-particle sludge, the angle can be appropriately increased to enhance the scraping force; while when dealing with relatively thin sewage, the angle can be reduced to reduce wear on the bottom of the tank.

[0037] An appropriate angle design helps to reduce the vibration and sway of the scraping plate during movement, thereby improving the overall stability of the equipment. A stable equipment operation state not only helps to improve the cleaning efficiency but also reduces noise and energy consumption.

[0038] Preferably, the shape of the scraping plate is an arc structure. The arc-shaped scraping plate can better fit the bottom of the water collecting tank or other irregular surfaces, reducing dead corners and omitted areas during the cleaning process, thereby improving the cleaning effect. The arc structure enables a certain pressure distribution to be formed during the scraping process, helping to prevent sludge from adhering to the scraping plate.

[0039] Preferably, the upper part of the water collecting tank is integrally bent outward to form a rack mounting bracket 1-1 and a walking guide groove bracket 1-2. By integrally bending outward to form the rack mounting bracket and the walking guide groove bracket, the assembly of additional components is avoided, realizing an integrated design of the structure. This design not only simplifies the production process but also improves the overall compactness of the equipment, reducing space occupation.

[0040] The integrated design of the rack mounting bracket and the walking guide groove bracket enables the water collecting tank to not only have the function of collecting fluid, but also integrate the installation base of the drive system (rack mounting bracket) and the movement guiding structure (walking guide groove bracket), improving the integration and functional diversity of the equipment.

[0041] Preferably, reinforcing ribs 1-3 are provided between the rack mounting bracket and the walking guide groove bracket and the side wall of the water collecting tank. The design of the reinforcing ribs effectively disperses the stress generated when the rack mounting bracket and the walking guide groove bracket are stressed, preventing structural damage caused by local stress concentration. By adding the reinforcing ribs, the load-bearing capacity of the entire water collecting tank structure is significantly improved, and it can better withstand the dynamic loads generated by the scraper or other moving components during operation; the presence of the reinforcing ribs enhances the rigidity of the side wall of the water collecting tank, enabling the rack mounting bracket and the walking guide groove bracket to maintain a stable shape and position during use, reducing operation failures caused by deformation. The stable structure helps to ensure the precise operation of moving components such as the scraper in the walking guide groove, improving the accuracy and efficiency of operations such as cleaning or conveying.

[0042] Preferably, a shield 5 is installed on the rack mounting bracket. The shield has significant technical effects such as preventing mud cakes from falling in, protecting the rack, ensuring smooth walking, and facilitating maintenance.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cleaning device for a pressure filtration water collection tank of an offshore sludge dewatering and volume reduction platform. The cleaning device is installed on the side of the drainage pipe of a plate and frame filter press and is characterized in that: A water collecting tank is used to collect the filtered water flowing out of each plate frame outlet of the filter press, and the water collecting tank is fixedly installed on the side frame of the filter press through a bracket; A movable scraper is arranged in the water collecting tank, and the scraper is connected to a driving unit which drives the scraper to reciprocate along the water collecting tank.

2. The filter press water collection tank cleaning device for the water-based sludge dewatering and volume reduction platform according to claim 1, characterized in that: The driving unit includes a motor, which is mounted on a motor bracket. A driving gear is mounted on the output shaft of the motor. A rack is mounted on the side wall of the water collecting trough on the driving gear side. The driving gear is meshed with the rack. A walking guide groove is mounted on the side wall of the water collecting trough on the opposite side of the rack. A walking wheel is arranged in the walking guide groove. The walking wheel is mounted on the motor bracket through a supporting shaft.

3. The sludge dewatering and volume reduction platform filter press water collection tank cleaning device according to claim 2, characterized in that: Guide wheels are installed on at least two opposite sides of the motor bracket in the water collecting tank, and the guide wheels abut against the side walls of the water collecting tank.

4. The cleaning device for the pressure filtration water collection tank of the waterborne sludge dewatering and volume reduction platform according to claim 2, wherein: The motor is a coaxial dual-output motor.

5. The filter press water collection tank cleaning device for the waterborne sludge dewatering and volume reduction platform according to claim 3, wherein: There are four guide wheels, which are respectively located at the four corners of the motor bracket.

6. The cleaning device for the filter press water collection tank of the water sludge dewatering and volume reduction platform according to claim 1, wherein: An angle of 15 to 45 degrees is provided between the scraper and the bottom of the water collecting tank.

7. The cleaning device for the pressure filtration water collection tank of the water-based sludge dewatering and volume reduction platform according to claim 6, characterized in that: The scraper is in an arc shape.

8. The cleaning device for the filter press water collection tank of the water sludge dewatering and volume reduction platform according to claim 1, wherein: The upper part of the water collecting trough is integrally bent outward to form a rack mounting support plate and a travel guide groove support plate.

9. The cleaning device for the pressure filtration water collection tank of the water sludge dehydration and volume reduction platform according to claim 8, characterized in that: Reinforcing ribs are arranged between the rack mounting support plate and the travel guide groove support plate and the side wall of the water collecting trough.

10. The cleaning device for the filter press water collection tank of the waterborne sludge dewatering and volume reduction platform according to claim 8, characterized in that: A guard is installed on the rack mounting bracket.

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