A multi-medium filter backwash water recovery device

Abstract

This utility model relates to the field of water treatment technology, specifically a backwash water recovery device for a multi-media filter. It includes a treatment cylinder, a fixed rod at the bottom of the treatment cylinder, a recovery bucket at the end of the fixed rod away from the treatment cylinder, a conveying mechanism, a cleaning mechanism, and filter plates. The conveying mechanism is located at the top of the treatment cylinder; the cleaning mechanism is located inside the treatment cylinder; and the filter plates are slidably located inside the treatment cylinder. Through the cleaning mechanism, a motor drives a pressing frame to rotate, which in turn causes the filter plates to vibrate under the action of a fixing component and a spring. The rotating pressing frame, in conjunction with a scraper, cleans impurities on the filter plates. Vibration cleaning breaks down the adhesion of impurities to the filter plate surface, making them easier for the water flow to wash away. This is more effective than simple water rinsing and can more thoroughly remove impurities from the filter plates. Rotation cleaning ensures that all parts of the filter plates are cleaned evenly, significantly improving backwash efficiency.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a multi-media filter backwash water recovery device. Background Technology

[0002] Multi-media filters require periodic backwashing during operation to remove trapped impurities, but the backwashing process consumes a large amount of water. Backwash water recovery devices are used to collect, treat, and reuse this wastewater to reduce water consumption, minimize sewage discharge, and improve the system's economic and environmental performance.

[0003] Chinese Patent CN205867690U discloses a filter backwash water recovery device, comprising a filter, a dust collection tank, and a backwash recovery tank. The inlet pipe of the recovery tank is connected to the backwash water pipe of the filter, and a valve is installed on the backwash water pipe. The outlet pipe of the recovery tank is connected to the dust collection tank. A filter layer is provided in the recovery tank, and the filter layer is fixed by a filter layer support device. A disc-shaped steel pipe is located at the bottom of the recovery tank, and the disc-shaped steel pipe is connected to a compressed air pipe. The steel pipe has evenly spaced holes for cleaning the filter layer. This device ensures complete recovery of filter backwash water, reducing various system consumptions, and enables stable system water quality operation, meeting user water quality requirements and creating conditions for improving user product quality.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: the existing multi-media filter backwash water recovery device cannot clean the impurities on the filter plate in real time during the processing, which makes the filter plate prone to clogging and affects the subsequent treatment effect. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art where filter plates are easily clogged during backwash water treatment, affecting subsequent use, and to propose a multi-media filter backwash water recovery device.

[0006] The technical solution of this utility model: A multi-media filter backwash water recovery device, comprising a treatment cylinder, a fixing rod disposed at the bottom of the treatment cylinder, and a recovery tank disposed at the end of the fixing rod away from the treatment cylinder; further comprising:

[0007] The conveying mechanism is located at the top of the treatment cylinder and is used to spirally convey the backwash water of the filter into the treatment cylinder.

[0008] The cleaning mechanism is located inside the treatment cylinder and is used to filter the backwash water and continuously clean the impurities after filtration.

[0009] The filter plate is slidably disposed inside the processing cylinder. A fixing member is provided on the top of the filter plate. The fixing member is arc-shaped, with one end being an inclined surface and the other end being a vertical surface. When the cleaning mechanism is working, it rotates continuously, thereby pressing the fixing member down through the inclined surface, and then disengaging from the fixing member when rotating to the vertical surface. This causes the fixing member and the filter plate to rebound under the drive of the cleaning mechanism, thus achieving vibration for cleaning.

[0010] Preferably, a straight slide rail is provided on the outer side of the processing cylinder, and a sealing door is slidably provided on the outer side of the straight slide rail.

[0011] Preferably, the conveying mechanism includes a motor, a rotating shaft, a spur gear, and a gear ring;

[0012] The motor is located at the top of the processing cylinder, the first rotating shaft is located at the top of the motor, the spur gear is located at the top of the first rotating shaft, the gear ring is located on the side of the spur gear, and the spur gear and the gear ring mesh with each other. A conveying pipe is provided inside the gear ring, a spiral conveying plate is provided inside the conveying pipe, and a connecting shaft is provided at the center of the spiral conveying plate.

[0013] Preferably, the cleaning mechanism includes a rotary cleaning component and a vibratory cleaning component;

[0014] The rotating cleaning component is located inside the processing cylinder and is used to circulate and scrape and clean the impurities filtered on the filter plate.

[0015] The vibration cleaning component is located at the bottom of the filter plate and is used to drive the filter plate to vibrate.

[0016] Preferably, the rotating cleaning assembly includes a rotating shaft, a pressing frame, and a fixing frame;

[0017] The second rotating shaft is located at the bottom of the motor, the pressing frame is located at the bottom of the second rotating shaft, the fixed frame is located at the top of the pressing frame, the bottom of the fixed frame is equipped with the second telescopic rod, the outer side of the second telescopic rod is equipped with the second spring, and the bottom of the second telescopic rod is equipped with the scraper.

[0018] Preferably, the vibration cleaning assembly includes a telescopic rod, a spring, and a mounting block;

[0019] One telescopic rod is located at the bottom of the filter plate, one spring is located on the outside of the telescopic rod, and one mounting block is located at the bottom of the telescopic rod. The side of the mounting block is connected to the inside of the treatment cylinder.

[0020] Preferably, a flow guide platform is provided on the inner side of the processing cylinder, and the flow guide platform is configured as a conical platform.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] 1. Through the design of the cleaning mechanism, the motor drives the pressing frame to rotate, which in turn causes the filter plate to vibrate under the action of the fixing parts and springs. When the pressing frame rotates, it works in conjunction with the scraper to clean the impurities on the filter plate. Vibration cleaning can break the adhesion of impurities on the surface of the filter plate, making it easier for impurities to be washed off by the water flow. It is more effective than simple water rinsing and can more thoroughly remove impurities from the filter plate. Rotation cleaning ensures that all parts of the filter plate are cleaned evenly, avoiding cleaning dead corners, which can significantly improve backwashing efficiency. At the same time, it can reduce the friction and wear of impurities on the filter plate and extend the service life of the filter plate.

[0023] 2. Through the setting of the conveying mechanism, the motor drives the spiral conveyor plate to rotate, thereby transporting the backwash water to the treatment cylinder through the conveying pipe. In this way, the solid impurities in the backwash water may gradually settle due to gravity or the pushing action of the spiral blades, achieving preliminary solid-liquid separation and reducing the burden on the subsequent filter plates. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the conveying mechanism;

[0026] Figure 3 This is a structural diagram of the cleaning mechanism;

[0027] Figure 4 A partial structural diagram of the cleaning mechanism;

[0028] Figure 5 for Figure 4 An enlarged diagram of A in the diagram.

[0029] Reference numerals in the attached diagram: 1. Processing cylinder; 2. Straight slide rail; 3. Sealing door; 4. Fixing rod; 5. Recycling bin; 6. Guide platform; 7. Filter plate; 801. Motor; 802. Rotating shaft one; 803. Circular gear; 804. Gear ring; 805. Conveying pipe; 806. Connecting shaft; 807. Spiral conveying plate; 901. Pressing frame; 902. Fixing component; 903. Spring one; 904. Telescopic rod one; 905. Mounting block; 906. Fixing frame; 907. Telescopic rod two; 908. Spring two; 909. Scraper; 910. Rotating shaft two. Detailed Implementation

[0030] Example 1

[0031] like Figures 1-2As shown, the present invention proposes a multi-media filter backwash water recovery device, which includes a treatment cylinder 1, a fixing rod 4 set at the bottom of the treatment cylinder 1, a recovery bucket 5 set at the end of the fixing rod 4 away from the treatment cylinder 1, a conveying mechanism, a cleaning mechanism, and a filter plate 7. Four fixing rods 4 are arranged in a ring around the treatment cylinder 1.

[0032] The conveying mechanism is located at the top of the treatment cylinder 1 and is used to convey the backwash water of the filter into the treatment cylinder 1 by spiral conveying.

[0033] The cleaning mechanism is located inside the treatment cylinder 1 and is used to filter the backwash water and continuously clean the impurities after filtration.

[0034] The filter plate 7 is slidably disposed inside the processing cylinder 1. A fixing member 902 is provided on the top of the filter plate 7. The fixing member 902 is arc-shaped, with one end of the fixing member 902 being an inclined surface and the other end being a vertical surface. When the cleaning mechanism is working, it rotates continuously, thereby pressing the fixing member 902 down through the inclined surface, causing the filter plate 7 to be pressed down. Then, when it rotates to the vertical surface, it disengages from the fixing member 902, so that the fixing member 902 and the filter plate 7 rebound under the drive of the cleaning mechanism to achieve vibration and cleaning.

[0035] A straight slide rail 2 is provided on the outside of the processing cylinder 1, and a sealing door 3 is slidably provided on the outside of the straight slide rail 2. The sealing door 3 is circular and can completely seal the opening of the processing cylinder 1.

[0036] The conveying mechanism includes a motor 801, a rotating shaft 802, a spur gear 803, and a gear ring 804. The motor 801 is located at the top of the processing cylinder 1, the rotating shaft 802 is located at the top of the motor 801, the spur gear 803 is located at the top of the rotating shaft 802, and the gear ring 804 is located on the side of the spur gear 803, with the spur gear 803 and gear ring 804 meshing. A conveying pipe 805 is located inside the gear ring 804, and a spiral conveying plate 807 is located inside the conveying pipe 805. The bottom of the conveying pipe 805 is rotatably connected to the top of the processing cylinder 1. A connecting shaft 806 is provided at the center of the spiral conveyor plate 807. When the motor 801 is started, the motor 801 drives the rotating shaft 802 to rotate, the rotating shaft 802 drives the spur gear 803 to rotate, the spur gear 803 drives the gear ring 804 to rotate, and the gear ring 804 drives the spiral conveyor plate 807 to rotate, thus connecting the top of the conveying pipe 805 to the backwash water output pipe, thereby driving the backwash water transportation through the rotation of the spiral conveyor plate 807.

[0037] A flow guide platform 6 is provided on the inner side of the treatment cylinder 1. The flow guide platform 6 is a conical platform. The flow guide platform 6 is used to guide the treated water into the recycling tank 5 for easy collection. The flow guide platform 6 is located directly below the filter plate 7.

[0038] Example 2

[0039] like Figures 3-5 As shown, this utility model proposes a multi-media filter backwash water recovery device. Compared with Embodiment 1, this embodiment details the structure of the cleaning mechanism.

[0040] The cleaning mechanism includes a rotating cleaning component and a vibrating cleaning component; the rotating cleaning component is located inside the processing cylinder 1 and is used to circulate and scrape away impurities filtered on the filter plate 7; the vibrating cleaning component is located at the bottom of the filter plate 7 and is used to drive the filter plate 7 to vibrate. The rotating cleaning assembly includes a second rotating shaft 910, a pressing frame 901, and a fixing frame 906. The second rotating shaft 910 is located at the bottom of the motor 801, the pressing frame 901 is located at the bottom of the second rotating shaft 910, and the fixing frame 906 is located at the top of the pressing frame 901. The pressing frame 901 has three protruding ends, and the fixing frame 906 is located on the protruding ends of the pressing frame 901. A second telescopic rod 907 is located at the bottom of the fixing frame 906, a second spring 908 is located on the outside of the second telescopic rod 907, and a scraper 909 is located at the bottom of the second telescopic rod 907. The motor 801 drives the pressing frame 901 to rotate through the second rotating shaft 910. When the pressing frame 901 rotates to the inclined surface of the fixing member 902, it presses down on the fixing member 902 and the filter plate 7. At this time, the second spring 908 drives the scraper 909 to press down, so that it always adheres to the top of the filter plate 7, so that the pressing frame 901 can continuously clean the filter plate 7 when rotating. The vibration cleaning assembly includes a telescopic rod 904, a spring 903, and a mounting block 905. The telescopic rod 904 is located at the bottom of the filter plate 7, the spring 903 is located on the outside of the telescopic rod 904, and the mounting block 905 is located at the bottom of the telescopic rod 904. The side of the mounting block 905 is connected to the inside of the treatment cylinder 1. When the pressing frame 901 presses down on the fixing member 902 and drives the filter plate 7 to press down, the spring 903 contracts. When the pressing frame 901 disengages from the fixing member 902, the filter plate 7 rebounds under the action of the spring 903, thereby achieving vibration. Furthermore, the elastic coefficient of the spring 903 is greater than that of the second spring 908, so the second spring 908 cannot affect the position of the filter plate 7.

[0041] In summary, when using this utility model, the top of the conveying pipe 805 is connected to the output pipe of the backwash water. The motor 801 is started, which drives the rotating shaft 802 to rotate. The rotating shaft 802 drives the spur gear 803 to rotate, which in turn drives the gear ring 804 to rotate. The gear ring 804 then drives the spiral conveying plate 807 to rotate, thereby transporting the backwash water into the treatment cylinder 1. The filter plate 7 filters the backwash water, and the treated backwash water flows through the guide platform 6 into the recovery tank 5. Impurities are blocked above by the filter plate 7. Simultaneously, the motor 801... The rotating shaft 910 drives the pressing frame 901 to rotate. When the pressing frame 901 rotates to the inclined surface of the fixing part 902, it presses the fixing part 902 and the filter plate 7 downward. At this time, the spring 908 drives the scraper 909 to press down, so that it always adheres to the top of the filter plate 7. This allows the pressing frame 901 to continuously clean the filter plate 7 when it rotates. The filter plate 7 also achieves cyclic vibration under the action of the pressing frame 901 and the spring, which enhances the cleaning effect. After the backwash water treatment is completed, the sealing door 3 is opened upward, so that the impurities collected on the filter plate 7 can be cleaned.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A multi-media filter backwash water recovery device, comprising a treatment cylinder (1), a fixing rod (4) disposed at the bottom of the treatment cylinder (1), and a recovery tank (5) disposed at the end of the fixing rod (4) away from the treatment cylinder (1); characterized in that, Also includes: The conveying mechanism is located at the top of the treatment cylinder (1) and is used to convey the backwash water of the filter into the treatment cylinder (1) by spiral conveying. The cleaning mechanism is located inside the treatment cylinder (1) and is used to filter the backwash water and continuously clean the impurities after filtration. The filter plate (7) is slidably disposed inside the processing cylinder (1). A fixing member (902) is provided on the top of the filter plate (7). The fixing member (902) is arc-shaped. One end of the fixing member (902) is set as an inclined surface, and the other end is a vertical surface. When the cleaning mechanism is working, it rotates continuously, thereby pressing the fixing member (902) continuously through the inclined surface to make the filter plate (7) press down. Then, when it rotates to the vertical surface, it disengages from the fixing member (902), thereby causing the fixing member (902) and the filter plate (7) to rebound under the drive of the cleaning mechanism to achieve vibration for cleaning.

2. The multi-media filter backwash water recovery apparatus according to claim 1, wherein, A straight slide rail (2) is provided on the outside of the processing cylinder (1), and a sealing door (3) is slidably provided on the outside of the straight slide rail (2).

3. The multi-media filter backwash water recovery device according to claim 1, characterized in that, The conveying mechanism includes a motor (801), a rotating shaft (802), a spur gear (803), and a gear ring (804); The motor (801) is located at the top of the processing cylinder (1), the first rotating shaft (802) is located at the top of the motor (801), the spur gear (803) is located at the top of the first rotating shaft (802), the gear ring (804) is located on the side of the spur gear (803), and the spur gear (803) and the gear ring (804) mesh with each other. The inner side of the gear ring (804) is provided with a conveying pipe (805), the inner side of the conveying pipe (805) is provided with a spiral conveying plate (807), and the axis of the spiral conveying plate (807) is provided with a connecting shaft (806).

4. The multi-media filter backwash water recovery device according to claim 3, characterized in that, The cleaning mechanism includes a rotary cleaning component and a vibratory cleaning component; The rotating cleaning component is located inside the processing cylinder (1) and is used to rotate cyclically to scrape and clean the impurities filtered on the filter plate (7). The vibration cleaning component is located at the bottom of the filter plate (7) and is used to drive the filter plate (7) to vibrate.

5. The multi-media filter backwash water recovery device according to claim 4, characterized in that, The rotating cleaning assembly includes a second rotating shaft (910), a pressing frame (901), and a fixing frame (906); The second rotating shaft (910) is located at the bottom of the motor (801), the pressing frame (901) is located at the bottom of the second rotating shaft (910), the fixing frame (906) is located at the top of the pressing frame (901), the bottom of the fixing frame (906) is provided with the second telescopic rod (907), the outside of the second telescopic rod (907) is provided with the second spring (908), and the bottom of the second telescopic rod (907) is provided with the scraper (909).

6. The multi-media filter backwash water recovery device according to claim 4, characterized in that, The vibration cleaning assembly includes a telescopic rod (904), a spring (903), and a mounting block (905); Telescopic rod 1 (904) is located at the bottom of filter plate (7), spring 1 (903) is located on the outside of telescopic rod 1 (904), mounting block (905) is located at the bottom of telescopic rod 1 (904), and the side of mounting block (905) is connected to the inside of treatment cylinder (1).

7. The multi-media filter backwash water recovery device according to claim 1, characterized in that, A flow guide platform (6) is provided on the inner side of the processing cylinder (1), and the flow guide platform (6) is configured as a conical platform.

Images