Water treatment filtering device

Abstract

The utility model relates to a water treatment filtering device which comprises a filtering tank body, a water inlet and a water outlet are formed in the filtering tank body, a filtering piece located between the water inlet and the water outlet is arranged in the filtering tank body, and a cleaning mechanism located on the side, facing the water outlet, of the filtering piece is arranged in the filtering tank body. The cleaning mechanism comprises a foreign matter accumulation box, a lifting mechanism used for controlling the foreign matter accumulation box to move up and down is arranged on the filter tank body, a notch used for containing the foreign matter accumulation box is formed in the tank bottom of the side, facing the water inlet, of the filter part of the filter tank body, and when the foreign matter accumulation box is located in the notch, the foreign matter accumulation box can move up and down. According to the utility model, the cleaning mechanism is arranged in the filter tank body, and a liftable foreign matter accumulation box structure is adopted, so that intercepted solid foreign matters can be lifted to the upper part of the tank body along with the foreign matter accumulation box after sewage is emptied; and an operator can conveniently carry out centralized cleaning at a high position.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a water treatment filtering device. Background Art

[0002] In intermittent sewage treatment systems, sewage is typically collected in a sewage tank and then discharged into subsequent sewage treatment equipment after accumulating to a certain amount. To prevent large particles of impurities, floating objects, or flocculated masses from entering subsequent treatment units, a water treatment filter is typically installed at the front end of the sewage treatment equipment. This filter typically contains a filter element, which is primarily used to intercept larger solid foreign matter and flocculated masses in the sewage.

[0003] Generally, during actual operation, it is necessary to clean the foreign matter intercepted in the water treatment filter device after the sewage in the sewage pool is emptied, so as to prevent excessive accumulation of foreign matter, which will cause the water flow that can pass through the filter element to become smaller when the sewage is treated next time.

[0004] As sewage is discharged, the intercepted foreign matter will gradually accumulate on the water-facing side of the filter element with the impact of the water flow. After the sewage in the water treatment filter device has finished flowing out, the intercepted foreign matter will form a denser sedimentation layer in the bottom area of ​​the filter element, and some of it may stick to the filter element. In this way, when workers clean these foreign matter, they need to use tools to reach to the bottom of the water treatment filter device for a long time of cleaning, which requires more physical strength and time. Therefore, it is necessary to improve the above-mentioned water treatment filter device to facilitate workers to clean the solid foreign matter accumulated in the water treatment filter device. Utility Model Content

[0005] The utility model provides a water treatment and filtering device, which can save workers' physical strength and time for cleaning, and solves the above-mentioned problems existing in the use process of the prior art.

[0006] The technical solution of the present utility model is achieved as follows: a water treatment filter device includes a filter tank body, the filter tank body has a water inlet and a water outlet, the filter tank body is provided with a filter element located between the water inlet and the water outlet, the filter tank body is provided with a cleaning mechanism located on the side of the filter element facing the water outlet, the cleaning mechanism includes a foreign matter accumulation box, the filter tank body is provided with a lifting mechanism for controlling the foreign matter accumulation box to move up and down, the filter tank body is provided with a slot for accommodating the foreign matter accumulation box at the bottom of the filter tank body on the side of the filter element facing the water inlet, and when the foreign matter accumulation box is located in the slot, its upper end face close to the water inlet is flush with the bottom of the filter tank body close to it.

[0007] Preferably, the lifting mechanism is provided on both sides of the foreign matter accumulation box, and the lifting mechanism includes a telescopic cylinder and a connecting rod. The telescopic cylinder is fixed on the outer wall of the filter pool body, the lower end of the connecting rod is fixed on the foreign matter accumulation box, and the upper end of the connecting rod extends out of the filter pool body and is fixedly connected to the piston rod of the telescopic cylinder.

[0008] Preferably, a guide sleeve is fixedly connected to the upper side of the filter tank body corresponding to the two connecting rods, and the connecting rod is slidably fitted on the guide sleeve.

[0009] Preferably, the filter tank body is provided with a cleaning and sewage outlet at the lower side of the slot, and the filter tank body is provided with a second cleaning and sewage outlet on the side of the filter element facing the water outlet.

[0010] Preferably, the filter element includes a fixed frame and a filter grating, the fixed frame is fixed in the filter tank body, the fixed frame is an upper opening structure, a plurality of filter gratings are provided and are vertically fixed in the fixed frame, the filter gratings are a trapezoidal sheet structure with a larger bottom and a smaller top, and there is a water outlet gap between each adjacent filter grating.

[0011] Preferably, the foreign matter accumulation box is fixedly connected to a cleaning tooth corresponding to the water outlet gap on one side close to the filter grille. The cleaning tooth is cooperatively arranged in the water outlet gap, and the cleaning tooth is arranged to be inclined downward toward the foreign matter accumulation box from the filter grille.

[0012] Preferably, the lower side of each cleaning tooth is arranged to be tapered from top to bottom.

[0013] Preferably, the lower side of the foreign matter accumulation box close to the water inlet has a curved chamfer.

[0014] Preferably, a plurality of water filtering holes are provided through the foreign matter accumulation box.

[0015] In summary, the beneficial effects of the present invention are:

[0016] 1. This utility model provides a cleaning mechanism within the filter tank and employs a liftable foreign matter accumulation box structure. This allows the intercepted solid foreign matter to be lifted above the tank along with the foreign matter accumulation box after the sewage is drained, making it easier for operators to perform centralized cleaning at a high location. This allows operators to then clean only the small amount of foreign matter remaining within the filter tank. This significantly reduces labor intensity and improves cleaning efficiency compared to a system where all solid foreign matter is contained within the filter tank. Furthermore, when the foreign matter accumulation box is lowered into the slot, its upper end surface is flush with the tank bottom, ensuring smooth water flow and preventing the formation of eddies or dead corners where foreign matter could be trapped, thus ensuring the patency and hydraulic performance of the filter channel.

[0017] 2. By installing a lifting mechanism consisting of a telescopic cylinder and connecting rods on either side of the foreign matter accumulation box, smooth and synchronous lifting and lowering control of the foreign matter accumulation box is achieved, improving the stability and reliability of the lifting process. In particular, the telescopic cylinder is located on the outer wall of the filter tank, so that its piston rod indirectly drives the foreign matter accumulation box through the connecting rod. This effectively avoids direct exposure of the telescopic components to the sewage environment, preventing transmission failure caused by sewage corrosion and impurity blockage, extending the service life of the lifting mechanism, and improving the durability and maintenance convenience of the equipment.

[0018] 3. The filter element structure, consisting of a fixed frame and multiple vertically arranged trapezoidal filter grates, offers high mechanical strength and impact resistance, effectively intercepting large solid impurities and flocculants. The trapezoidal sheet structure, with a larger bottom and smaller top, not only enhances the rigidity of the individual filter grates but also optimizes the flow path, reducing the risk of clogging. The gaps between the multiple filter grates ensure sufficient water flow area while effectively intercepting impurities of varying particle sizes, resulting in stable and reliable filtration.

[0019] 4. Cleaning teeth are positioned on the debris accumulation box, corresponding to the gaps in the filter grating. These teeth automatically scrape away impurities adhering to the filter grating surface and in the gaps as the debris accumulation box is lifted, achieving a self-cleaning function that "cleans as it lifts." The cleaning teeth are positioned at an angle downward toward the filter grating, guiding scraped debris into the debris accumulation box to prevent secondary scattering. This significantly reduces the workload of manual filter grating cleaning, improving automation and ease of maintenance.

[0020] 5. The lower side of the cleaning teeth is designed to be tapered from top to bottom, so that during the next descending and resetting process, the conical guiding structure helps to smoothly reinsert the gap, ensuring that each lifting action can accurately complete the cleaning task, improving the repeatability and reliability of the cleaning action, and suitable for intermittent operation conditions with frequent start and stop.

[0021] 6. Multiple water filtering holes are set on the foreign matter accumulation box, which can quickly drain the accumulated water in the box during the lifting process, making it easier for workers to clean the foreign matter accumulation box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model after removing the foreign matter accumulation box and the lifting mechanism;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model after removing the filter tank body;

[0026] Figure 4 This is a schematic diagram of the structure explosion of the filter element and the foreign matter accumulation box in the present invention;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure when observed from another angle;

[0028] Figure 6 It is a structural schematic diagram of the foreign matter accumulation box in the utility model.

[0029] In the figure: 1. Filter tank body; 11. Water inlet; 12. Water outlet; 13. Notch; 14. Cleaning outlet; 15. Second cleaning outlet; 2. Foreign matter accumulation box; 21. Cleaning teeth; 22. Chamfer; 23. Water filter hole; 31. Telescopic cylinder; 32. Connecting rod; 33. Guide sleeve; 41. Fixed frame; 42. Filter grille; 43. Water outlet gap; 5. Connecting parts. DETAILED DESCRIPTION

[0030] The following is a combination of the appended examples of the present invention Figure 1-6 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] Example:

[0032] like Figures 1 to 6As shown, the utility model discloses a water treatment filtration device, including a filter tank body 1, the filter tank body 1 has a water inlet 11 connected to the upstream sewage tank and a water outlet 12 leading to a subsequent treatment unit. The device is installed as a whole below the ground, constituting a front-end pretreatment unit in the sewage treatment process. A filter element is provided in the filter tank body 1 between the water inlet 11 and the water outlet 12. In addition, a cleaning mechanism is provided in the filter tank body 1 on the side of the filter element facing the water outlet 12. The cleaning mechanism specifically includes a foreign matter accumulation box 2, and the filter tank body 1 is provided with a lifting mechanism for controlling the up and down movement of the foreign matter accumulation box 2. In addition, a slot 13 for accommodating the foreign matter accumulation box 2 is opened at the bottom of the filter tank body 1 on the side of the filter element facing the water inlet 11. The size of the foreign matter accumulation box 2 matches the preset slot 13 on the bottom of the tank. When the foreign matter accumulation box 2 is located in the slot 13, its upper end face close to the water inlet 11 is flush with the bottom of the adjacent filter tank body 1, ensuring that the water flow and foreign matter pass smoothly without forming obstructions or vortex areas.

[0033] To achieve the lifting function of the foreign object accumulation box 2, a lifting mechanism is provided on both sides of the foreign object accumulation box 2. The lifting mechanism includes a telescopic cylinder 31 and a connecting rod 32. The telescopic cylinder 31 is a pneumatic cylinder or a hydraulic cylinder. It should be noted that in order to ensure that the two telescopic cylinders 31 move synchronously to ensure smooth lifting and lowering of the foreign object accumulation box 2 and avoid tilting or jamming, a synchronous control valve can be used corresponding to the hydraulic or pneumatic system to accurately control the fluid flow entering each telescopic cylinder 31, thereby achieving synchronous extension and retraction of the two. A closed-loop electronic control system can also be used, using a position sensor (such as a linear encoder) to monitor the position of the piston of each telescopic cylinder 31 and feed the data back to a controller. The controller adjusts the drive signal of each telescopic cylinder 31 in real time based on the feedback information to ensure that they remain synchronized. The above methods are common knowledge of those skilled in the art and will not be described in detail here. In the present invention, the telescopic cylinder 31 is fixed to the outer wall of the filter tank body 1 by a screw, and the lower end of the connecting rod 32 is welded and fixed to the foreign matter accumulation box 2. The upper end of the connecting rod 32 extends out of the filter tank body 1 and is fixed to the piston rod of the telescopic cylinder 31 by a screw or welding through a connecting piece 5. The telescopic cylinder 31 is located on the outer wall of the filter tank body 1, and its piston rod is connected to the upper end of the connecting rod 32, so that the telescopic cylinder 31 can be prevented from being affected by sewage. If a screw rod structure is used to extend into the filter tank body 1 to control the lifting of the foreign matter accumulation box 2, the screw rod structure is easily affected by sewage and corroded, and foreign matter causes the threads to get stuck. The present application adopts a reasonable structural setting, so that even the piston rod of the telescopic cylinder 31 does not extend into the sewage, which can protect its service life to the greatest extent.

[0034] Furthermore, a guide sleeve 33 is fixedly connected to the two connecting rods 32 corresponding to the upper side of the filter tank body 1, and the connecting rod 32 is slidably fitted on the guide sleeve 33. The connecting rod 32 slides along the inner wall of the guide sleeve 33 during the lifting process, playing a guiding and stabilizing role. A sealing ring structure can be set at the opening of the position on the guide sleeve 33 that cooperates with the connecting rod 32 to prevent foreign matter on the connecting rod 32 from entering between the guide sleeve 33 and the connecting rod 32. The connecting rod 32 and the guide sleeve 33 are made of corrosion-resistant material and are polished. It should also be noted that each time the present invention is cleaned, the surrounding area of ​​the connecting rod 32 and the guide sleeve 33 will also be processed to maintain smooth cooperation between the connecting rod 32 and the guide sleeve 33. In addition, during use, workers also need to check on site to eliminate hidden dangers in time.

[0035] The filter tank body 1 is provided with a cleaning sewage outlet 14 on the lower side of the groove 13, and the filter tank body 1 is provided with a second cleaning sewage outlet 15 on the side of the filter element facing the water outlet 12. The cleaning sewage outlet 14 and the second cleaning sewage outlet 15 are both provided with control valves, which are opened when the filter tank body 1 needs to be cleaned to discharge the cleaning sewage. The cleaning sewage can be reintroduced into the sewage pool of the sewage treatment system through a special pipe pump mechanism, or a separate wastewater collection system can be set up for the cleaning process. After all the cleaning wastewater is collected, it undergoes specific treatment steps (such as sedimentation, filtration, chemical treatment, etc.) to remove suspended matter and other pollutants therein, and is discharged or recycled after meeting the standards. Since this part is not the content to be protected by this application, it will not be described here.

[0036] In the present invention, the filter element specifically includes a fixed frame 41 and a filter grating 42. The fixed frame 41 is detachably fixed in the filter tank body 1 by a screw, wherein the fixed frame 41 is an upper opening structure, and a plurality of filter gratings 42 are provided and vertically fixed in the fixed frame 41. The filter gratings 42 are a trapezoidal sheet structure with a larger bottom and a smaller top. There is a water outlet gap 43 between each adjacent filter grating 42, which allows water to flow through while intercepting larger solid impurities, fibers, flocculants and other foreign matter.

[0037] In the present invention, a cleaning tooth 21 corresponding to the water outlet gap 43 is fixedly connected to the side of the foreign matter accumulation box 2 close to the filter grille 42. The cleaning tooth 21 is cooperatively arranged in the water outlet gap 43, and the cleaning tooth 21 is arranged to be inclined downward toward the foreign matter accumulation box 2 from the filter grille 42. When the foreign matter accumulation box 2 rises, the cleaning tooth 21 moves upward in the water outlet gap 43, scrapes off the impurities adhered to the surface of the filter grille 42 and in the gap and brings them into the box. The rising of the foreign matter accumulation box 2 can make each cleaning tooth 21 escape from the water outlet gap 43, and the lower side of each cleaning tooth 21 is gradually tapered from top to bottom, that is, the lower edge of each cleaning tooth 21 gradually narrows from top to bottom to form a tapered guiding structure, which facilitates the cleaning tooth 21 to enter the water outlet gap 43 again.

[0038] The lower side of the foreign matter accumulation box 2 near the water inlet 11 has an arc-shaped chamfer 22, which facilitates it to slide smoothly into the slot 13 during the descent process to avoid collision or obstruction.

[0039] A plurality of water filtering holes 23 are provided through the foreign matter accumulation box 2 for draining the accumulated water inside during the lifting process, thereby facilitating the workers to clean the foreign matter accumulation box 2 .

[0040] This utility model is designed specifically for intermittent water treatment scenarios. By integrating a liftable foreign matter accumulation box 2 with automatic cleaning teeth 21, it achieves centralized collection and initial automatic cleaning of intercepted materials in the filter grid, significantly reducing the burden of manual cleaning and improving maintenance efficiency and operational safety. The overall structure is rationally arranged, with key moving parts located away from the sewage environment. It is corrosion-resistant and easy to maintain, making it suitable for the front-end pretreatment stage of various small and medium-sized sewage treatment systems.

[0041] The operating principle of the present invention is as follows: During normal sewage treatment, sewage from the upstream sewage tank flows into the filter tank body 1 through the open water inlet valve. The water flows through the water outlet gap 43 of the filter element and enters the water outlet 12, ultimately flowing to the subsequent treatment unit. During this process, large particles of impurities and flocculants are intercepted by the filter screen 42. Most of them settle with the water flow and fall directly into the foreign matter accumulation box 2 located in the slot 13. A small amount adheres to the surface of the filter screen 42, and a small amount remains in the filter tank body 1.

[0042] Once the sewage tank is drained and the filtration process is complete, the water inlet valve is closed, stopping the water intake. The telescopic cylinders 31 on either side are then activated, and the piston rods extend upward synchronously, driving the foreign matter accumulation box 2 vertically upward along the guide sleeve 33 via the connecting rod 32. During this ascent, the cleaning teeth 21 fixed to the front of the box body move upward within the water outlet gap 43, scraping off impurities adhering to the bars and pushing them into the foreign matter accumulation box 2. Because the cleaning teeth 21 are arranged at an angle downward, most of the scraped foreign matter naturally slides into the box under the influence of gravity and water flow.

[0043] Once the debris accumulation box 2 is fully raised above the tank, the operator can use a shovel, high-pressure water gun, or other tools to centrally clean the accumulated debris from a safe location on the ground. The operator can then proceed to clean any remaining debris in the filter tank 1 or the filter screen 42. This facilitates the operation and significantly reduces labor intensity. Once cleaning is complete, the telescopic cylinder 31 reverses its motion, retracting the piston rod and steadily lowering the debris accumulation box 2. The curved chamfer 22 on its bottom guides it back into position within the notch 13, restoring its upper surface to a flush position with the tank bottom, ready for the next processing cycle.

[0044] During regular deep maintenance, the valves of the first and second cleaning drain outlets can be opened, and a high-pressure water gun can be used to fully flush the inner wall of the pool body, the filter screen 42, the inside and outside of the foreign matter accumulation box 2, and the cleaning teeth 21. The flushing wastewater is discharged through the drain outlet to ensure the cleanliness of the interior of the device and prevent odor and blockage.

[0045] It should also be pointed out that the terms indicated in the present invention, such as: "front", "rear", "vertical", "horizontal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water treatment and filtering device, comprising a filter tank body having a water inlet and a water outlet, characterized in that: The filter pool body is provided with a filter element located between the water inlet and the water outlet, the filter pool body is provided with a cleaning mechanism located on the side of the filter element facing the water outlet, the cleaning mechanism includes a foreign matter accumulation box, the filter pool body is provided with a lifting mechanism for controlling the up and down movement of the foreign matter accumulation box, the filter pool body is provided with a slot for accommodating the foreign matter accumulation box at the bottom of the filter pool body on the side of the filter element facing the water inlet, and when the foreign matter accumulation box is located in the slot, its upper end face close to the water inlet is flush with the bottom of the filter pool body close to it.

2. A water treatment and filtration device according to claim 1, characterized in that: The lifting mechanism is provided on both sides of the foreign matter accumulation box. The lifting mechanism includes a telescopic cylinder and a connecting rod. The telescopic cylinder is fixed on the outer wall of the filter pool body, the lower end of the connecting rod is fixed on the foreign matter accumulation box, and the upper end of the connecting rod extends out of the filter pool body and is fixedly connected to the piston rod of the telescopic cylinder.

3. A water treatment and filtration device according to claim 2, characterized in that: A guide sleeve is fixedly connected to the upper side of the filter tank body corresponding to the two connecting rods, and the connecting rod is slidably fitted on the guide sleeve.

4. A water treatment and filtering device according to claim 1, characterized in that: The filter tank body is provided with a cleaning and sewage outlet at the lower side of the slot, and the filter tank body is provided with a second cleaning and sewage outlet at the side of the filter element facing the water outlet.

5. The water treatment and filtration device according to claim 1, characterized in that: The filter element includes a fixed frame and a filter grid. The fixed frame is fixed in the filter tank body. The fixed frame is an upper open structure. Several filter grids are provided and vertically fixed in the fixed frame. The filter grids are trapezoidal sheet structures with larger bottom and smaller top. There is a water outlet gap between each adjacent filter grid.

6. A water treatment and filtering device according to claim 5, characterized in that: The foreign matter accumulation box is fixedly connected to a cleaning tooth corresponding to the water outlet gap on one side close to the filter grille. The cleaning tooth is cooperatively arranged in the water outlet gap, and the cleaning tooth is arranged to be inclined downward toward the foreign matter accumulation box from the filter grille.

7. A water treatment and filtration device according to claim 6, characterized in that: The lower side of each cleaning tooth is arranged to be gradually reduced from top to bottom.

8. The water treatment and filtration device according to claim 6, characterized in that: The lower side of the foreign matter accumulation box close to the water inlet has a curved chamfer.

9. A water treatment and filtration device according to any one of claims 1 to 8, characterized in that: The foreign matter accumulation box is provided with a plurality of water filtering holes.

Images