A bar filter device with automatic sludge removal

Abstract

This utility model belongs to the field of bar screen filtration technology, specifically disclosing a bar screen filtration device with automatic slag removal. It includes a filter bar and a frame disposed outside the filter bar, with a cleaning mechanism at the top of the frame. The cleaning mechanism includes a cleaning roller disposed on one side of the filter bar. Fixing blocks are correspondingly disposed on both sides of the frame, and fixing rods are slidably disposed on each fixing block. Each fixing rod has multiple positioning holes along its length, and corresponding through holes are provided on the fixing blocks. A screw is disposed inside each through hole, allowing the screw to pass through and selectively engage with any of the positioning holes. Through the cleaning mechanism, the rotatable cleaning roller, using surface bristles or a scraper structure, fully contacts the impurities accumulated on the surface of the filter bar, forcibly scraping away stubborn impurities from the filter bar surface, achieving mechanical slag removal, preventing impurities from clogging the filter bar mesh, and avoiding a decrease in the efficiency of the filtration device.

Description

Technical Field

[0001] This application relates to the field of bar screen filtration technology, and more specifically, to a bar screen filtration device with automatic slag removal. Background Technology

[0002] In many fields such as water treatment, environmental protection engineering, and industrial wastewater treatment, bar screen filters are key pretreatment equipment for solid-liquid separation. Their core function is to intercept suspended solids, solid particles, fibrous materials and other impurities in water to ensure the stable operation of subsequent treatment equipment (such as water pumps, heat exchangers, membrane filters, etc.) and avoid problems such as pipe blockage, equipment wear and tear and reduced treatment efficiency.

[0003] Although filtration devices can trap a significant amount of screenings and contaminants, clogging often occurs when the screen mesh size is less than 0.5mm, especially when the wastewater contains high levels of grease and fiber. This leads to frequent overflows and reduced treatment efficiency in the filtration system. Therefore, effective cleaning devices and methods are needed to address this issue. Utility Model Content

[0004] To address the aforementioned problems, this application provides a bar screen filter with automatic slag removal.

[0005] The bar filter device with automatic slag removal provided in this application adopts the following technical solution: A bar filter device with automatic slag removal includes a filter bar and a frame disposed outside the filter bar, with a cleaning mechanism provided at the top of the frame. The cleaning mechanism includes a cleaning roller, which is located on one side of the filter grid. Fixed blocks are correspondingly provided on both sides of the frame. A fixed rod is slidably provided on each fixed block. Multiple positioning holes are provided on each fixed rod along its length. A through hole is correspondingly provided on the fixed block. A screw is provided inside the through hole. The screw can pass through the through hole and selectively cooperate with any positioning hole to fix the fixed rod to the fixed block.

[0006] Through the above technical solution, the cleaning roller of the cleaning mechanism can rotate and fully contact the impurities accumulated on the surface of the filter grid through the surface bristles or scraper structure, forcibly scraping away the stubborn impurities from the surface of the filter grid, realizing mechanical cleaning, avoiding impurities remaining and clogging the filter grid mesh, and avoiding a decrease in the efficiency of the filtration device.

[0007] Furthermore, a motor is installed on one side of the frame, and the output end of the motor is fixedly connected to the cleaning roller. The cleaning roller is rotatably connected to two fixed rods.

[0008] Furthermore, a connecting frame is fixedly connected to one end of each of the two fixed rods, and a connecting plate is fixedly connected to both ends of the connecting frame.

[0009] Furthermore, a flushing pipe is connected between the two connecting plates, and one end of the flushing pipe is connected to multiple nozzles.

[0010] Through the above technical solution, the impact force of the water flow will thoroughly wash away the impurities remaining on the surface of the cleaning roller, avoiding the problem that the impurities will stick to the cleaning roller after drying and solidifying for a long time, which would lead to incomplete cleaning and scratches on the surface of the filter grid when the cleaning roller comes into contact with the filter grid for cleaning the next start-up.

[0011] Furthermore, two fixing plates are fixedly connected to both ends of the frame, and a collection box is provided at one end of the frame.

[0012] Furthermore, the collection box is connected to the frame via bolts inside the fixing plate.

[0013] Furthermore, an inclined plate is fixedly connected to one end of the collection box, and the inclined plate is located on one side of the filter grid.

[0014] Furthermore, a baffle is fixedly connected to the end of the collection box away from the inclined plate.

[0015] In summary, this application includes at least one of the following beneficial technical effects: (1) By setting up a cleaning mechanism, the rotatable cleaning roller can fully contact the impurities accumulated on the surface of the filter grid through the surface brush or scraper structure, and force the stubborn impurities to be scraped off from the surface of the filter grid, thereby achieving mechanical cleaning and avoiding the blockage of filter grid mesh by impurities and the reduction of the efficiency of the filtration device. (2) This utility model uses the impact force of water flow to thoroughly wash away the impurities remaining on the surface of the cleaning roller, avoiding the impurities from drying and solidifying for a long time and sticking to the cleaning roller, which would cause problems such as incomplete cleaning and scratching of the grid surface when the cleaning roller contacts the filter grid for cleaning during the next start-up. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a partial view of the present invention; Figure 4 This is a schematic diagram of the connection structure between the cleaning roller and the collection box of this utility model; Figure 5 This is a partial plan view of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Filter grid; 2. Frame; 3. Cleaning roller; 4. Fixing block; 5. Screw; 6. Fixing rod; 7. Positioning hole; 8. Motor; 9. Connecting frame; 10. Connecting plate; 11. Flushing pipe; 12. Nozzle; 13. Collection box; 14. Fixing plate; 15. Inclined plate; 16. Baffle. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] Reference Figures 1-5 A bar filter device with automatic slag removal includes a filter bar 1 and a frame 2 disposed on the outside of the filter bar 1, with a cleaning mechanism at the top of the frame 2. The cleaning mechanism includes a cleaning roller 3, which is located on one side of the filter grid 1. Fixing blocks 4 are correspondingly provided on both sides of the frame 2. Fixing rods 6 are slidably provided on each fixing block 4. Multiple positioning holes 7 are provided on each fixing rod 6 along its length. A through hole is correspondingly provided on the fixing block 4. A screw 5 is provided inside the through hole. The screw 5 can pass through the through hole and selectively cooperate with any positioning hole 7 to fix the fixing rod 6 to the fixing block 4.

[0020] During the filtration stage, the filter grid 1, as the core filtration component of the bar screen filter, is vertically or inclinedly installed in the fluid channel inside the frame 2. When the sewage, industrial wastewater, and other fluids to be treated flow through the filter grid 1 along the preset path, the filter grid 1, with its regularly distributed mesh structure, physically intercepts suspended impurities (such as fibers and plastic fragments) and solid particles (such as sand and residue) in the fluid, achieving solid-liquid separation. The clarified fluid that meets the requirements of subsequent treatment passes through the mesh of the filter grid 1 under the action of gravity or pressure and continues to enter the subsequent water treatment process (such as sedimentation, disinfection, etc.). When assembling components such as the cleaning roller 3, first adjust the screws 5 in the fixing blocks 4 on both sides of the frame 2 manually or automatically: unscrew the screws 5 from the positioning holes 7 that the fixing rod 6 is currently engaged with, and push the fixing rod 6 to move horizontally in the sliding groove of the fixing block 4, thereby adjusting the distance between the cleaning roller 3 and the filter grid 1 that are rotatably connected to the fixing rod 6, ensuring that the cleaning roller 3 can fit against the surface of the filter grid 1 without generating excessive friction. After the distance is adjusted to the correct position, re-pass the screws 5 through the through holes of the fixing block 4 and screw them into the corresponding positioning holes 7 to complete the locking of the fixing rod 6 and the fixing block 4, ensuring the operational stability of the cleaning roller 3. When the bar screen filter is running, the motor 8 on one side of the frame 2 is started synchronously. The output shaft of the motor 8 drives the cleaning roller 3, which is fixedly connected to it, to rotate at high speed. The rotating cleaning roller 3, through the surface brush or scraper structure, makes full contact with the impurities accumulated on the surface of the filter bar 1, forcibly scraping away the stubborn impurities from the surface of the filter bar 1, realizing mechanical cleaning and avoiding impurities remaining and clogging the mesh of the filter bar 1.

[0021] Reference Figures 4-5 A motor 8 is provided on one side of the frame 2. The output end of the motor 8 is fixedly connected to the cleaning roller 3. The cleaning roller 3 is rotatably connected to two fixed rods 6. A connecting frame 9 is fixedly connected to one end of the two fixed rods 6. A connecting plate 10 is fixedly connected to both ends of the connecting frame 9. A flushing pipe 11 is connected in front of the two connecting plates 10. A plurality of nozzles 12 are connected to one end of the flushing pipe 11.

[0022] When the cleaning roller 3 has been running for a period of time and the bar screen filter is in a stopped state, after the flushing pipe 11 is connected to a high-pressure water source, multiple nozzles 12 connected to one end spray high-pressure water flow onto the cleaning roller 3. The high-pressure water flow sprayed from the nozzles 12 can act on the bristles on the surface of the cleaning roller 3 (at this time, the motor 8 can drive the cleaning roller 3 to rotate, so that the cleaning roller 3 cleans more thoroughly). The impact force of the water flow thoroughly washes away the impurities remaining on the surface of the cleaning roller 3, preventing the impurities from drying and solidifying for a long time and sticking to the cleaning roller 3, which would cause problems such as incomplete cleaning and scratching of the bar screen surface when the cleaning roller 3 comes into contact with the filter bar screen 1 for cleaning during the next start-up.

[0023] Reference Figures 4-5 Two fixing plates 14 are fixedly connected to both ends of the frame 2. A collection box 13 is provided at one end of the frame 2. The collection box 13 is connected to the frame 2 by bolts inside the fixing plate 14. An inclined plate 15 is fixedly connected to one end of the collection box 13. The inclined plate 15 is located on one side of the filter grid 1. A baffle 16 is fixedly connected to the end of the collection box 13 away from the inclined plate 15.

[0024] Impurities washed away by the high-pressure water flow slide down the surface of the cleaning roller 3 under the influence of the water flow, and then fall onto the inclined plate 15 on one side of the filter grid 1. With the help of the inclined angle of the inclined plate 15, they slide into the collection box 13. The baffle 16 at the end away from the inclined plate 15 can prevent the washed-down impurities from spilling from the end of the collection box 13. After rinsing is completed, the high-pressure water source connected to the rinsing pipe 11 is turned off, and the nozzle 12 stops spraying water. The staff can check the cleanliness of the surface of the cleaning roller 3. If there are still residual impurities, the rinsing process can be repeated. After confirming that the cleaning roller 3 is clean, there is no need to disassemble the cleaning roller 3.

[0025] When the filtration operation is started again, the cleaning roller 3 can be quickly put into the slag removal work in a clean state, ensuring the long-term cleaning efficiency and service life of the bar filter device.

[0026] Working principle: First, adjust the position of the cleaning roller 3, unscrew the screws 5 in the fixing blocks 4 on both sides of the frame 2, push the fixing rod 6 to move horizontally in the sliding groove of the fixing block 4, adjust the distance between the cleaning roller 3 and the filter grid 1 that are rotatably connected to the fixing rod 6, and ensure that the cleaning roller 3 fits the filter grid 1 without excessive friction, then pass the screw 5 through the through hole of the fixing block 4 and screw it into the corresponding positioning hole 7 of the fixing rod 6 to lock the fixing rod 6 to ensure the stability of the cleaning roller 3.

[0027] During the filtration stage, the filter grid 1 is placed vertically or inclined inside the fluid channel of the frame 2. The fluid to be treated flows through the filter grid 1 along a preset path. Its mesh intercepts suspended impurities and solid particles, achieving solid-liquid separation. The clarified fluid passes through the filter mesh and enters the subsequent process. During the operation of the device, the motor 8 on one side of the frame 2 is started simultaneously. The output shaft of the motor 8 drives the cleaning roller 3 to rotate at high speed. The cleaning roller 3 contacts the impurities accumulated on the surface of the filter grid 1 through surface bristles or scrapers, forcibly scraping away the impurities to complete mechanical cleaning and avoid clogging of the mesh.

[0028] After the cleaning roller 3 has been running for a period of time, the device stops. The flushing pipe 11 is connected to a high-pressure water source, and multiple nozzles 12 connected to it spray high-pressure water onto the cleaning roller 3. At the same time, the motor 8 drives the cleaning roller 3 to rotate to ensure thorough cleaning. The impact force of the water flow washes away the residual impurities on the surface of the cleaning roller 3. The washed-away impurities slide down the cleaning roller 3 under the action of the water flow and fall onto the inclined plate 15 on one side of the filter grid 1. They slide down the inclined plate 15 into the collection box 13. The collection box 13 is fixed by bolts on the fixing plates 14 at both ends of the frame 2. The baffle 16 at the end away from the inclined plate 15 prevents impurities from spilling.

[0029] After rinsing, the high-pressure water source is turned off. The staff checks the cleanliness of the cleaning roller 3 and repeats the rinsing if necessary. After confirming that it is clean, the device is put into standby mode. When the filtration operation is started next time, the cleaning roller 3 is quickly put into the cleaning process in a clean state to ensure the long-term operating efficiency and service life of the device.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grid filter device with automatic slag removal, characterized in that, include: A filter grid (1) and a frame (2) disposed outside the filter grid (1), wherein a cleaning mechanism is provided at the top of the frame (2); The cleaning mechanism includes a cleaning roller (3), which is disposed on one side of the filter grid (1). Fixing blocks (4) are disposed on both sides of the frame (2). Fixing rods (6) are slidably disposed on each fixing block (4). Multiple positioning holes (7) are provided on each fixing rod (6) along its length direction. A through hole is disposed on the fixing block (4). A screw (5) is disposed inside the through hole. The screw (5) can pass through the through hole and selectively cooperate with any of the positioning holes (7) to fix the fixing rod (6) on the fixing block (4).

2. The grid filter device with automatic slag removal according to claim 1, characterized in that: A motor (8) is provided on one side of the frame (2). The output end of the motor (8) is fixedly connected to the cleaning roller (3). The cleaning roller (3) is rotatably connected to two fixed rods (6).

3. The grid filter device with automatic slag cleaning according to claim 2, characterized in that: One end of each of the two fixed rods (6) is fixedly connected to a connecting frame (9), and both ends of the connecting frame (9) are fixedly connected to a connecting plate (10).

4. The grid filter device with automatic slag cleaning according to claim 3, characterized in that: A flushing pipe (11) is connected to the two connecting plates (10), and one end of the flushing pipe (11) is connected to a plurality of nozzles (12).

5. A bar filter device with automatic slag removal according to claim 1, characterized in that: Two fixing plates (14) are fixedly connected to both ends of the frame (2), and a collection box (13) is provided at one end of the frame (2).

6. A bar filter device with automatic slag removal according to claim 5, characterized in that: The collection box (13) is connected to the frame (2) by bolts inside the fixing plate (14).

7. A bar filter device with automatic slag removal according to claim 5, characterized in that: An inclined plate (15) is fixedly connected to one end of the collection box (13), and the inclined plate (15) is located on one side of the filter grid (1).

8. A bar filter device with automatic slag removal according to claim 7, characterized in that: A baffle (16) is fixedly connected to the end of the collection box (13) away from the inclined plate (15).

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