A centrifugal vertical backwash filter device

Abstract

The utility model discloses a centrifugal vertical backwash filter device, including filter drum, the bottom of filter drum is fixedly connected with centrifugal sand cover through flange and bolt, the utility model discloses the fixed connection of filter drum and centrifugal sand cover, the position setting of combining inlet pipe and outlet pipe make the water flow form reasonable path in filter drum, improve the filtering efficiency. The water hole on the support disc can evenly distribute water flow, and the communication design of cooperating swivel joint and main blow-off pipe provides the basis for backwash. The filter screen core fixed by the support ring can effectively intercept impurities, the driving motor drives the stirring column, the fixed column and the water stop plate to rotate, utilizes the cooperation of hollow structure and the inlet of dirty water, and can quickly collect and discharge impurities during backwash, and the overall structure is compact, and the device has the advantages of efficient filtration, automatic backwash, compact structure, easy maintenance, strong replaceability of filter core.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, specifically a centrifugal vertical backwashing filtration device. Background Technology

[0002] In the field of agricultural irrigation, filters are key equipment to ensure the stable operation of irrigation systems such as drip irrigation and sprinkler irrigation. They are used to remove silt, impurities, algae and other contaminants from the water to prevent clogging of irrigation equipment.

[0003] However, some existing agricultural irrigation filters with backwashing structures have many drawbacks: First, the devices are large in size and difficult to install flexibly in fields, greenhouses and other spaces with limited space; second, the backwashing effect is poor, impurities are not thoroughly cleaned, and the filter components need to be disassembled frequently, which is cumbersome and affects the filtration efficiency; third, the filter elements are mostly integral, and the whole unit needs to be replaced when damaged, which is not only troublesome and affects the operation, but also wastes resources.

[0004] Therefore, it is necessary to redesign and modify the centrifugal vertical backwashing filter to solve the problems of large size, poor backwashing effect, and high filter element maintenance cost. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a centrifugal vertical backwashing filter device, which has the advantages of high-efficiency filtration, convenient automatic backwashing, compact structure and easy maintenance, and highly replaceable filter element, thus solving the problems of large size, poor backwashing effect and high filter element maintenance cost of existing agricultural irrigation filters.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal vertical backwashing filtration device, comprising a filter cylinder, a centrifugal sedimentation cover fixedly connected to the bottom of the filter cylinder by a flange and bolts, an inlet pipe connected to the bottom right side of the filter cylinder, an outlet pipe connected to the top left side of the filter cylinder, a support plate fixedly connected inside the filter cylinder, a plurality of water permeable holes provided on the top of the support plate, the water permeable holes being evenly distributed in a ring on the top of the support plate, a rotary joint fixedly connected to the top of the support plate, a main drain pipe connected to the bottom of the support plate, the main drain pipe being connected to the rotary joint, a support ring fixedly connected inside the filter cylinder, and the support plate being located at the inlet. Above the pipe, a filter screen core is fixedly connected to the top of the support ring. A top cover is fixedly connected to the top of the filter cylinder via a flange and bolts. A drive motor is fixedly connected to the top of the top cover. The output end of the drive motor passes through the top cover and extends into the interior of the filter cylinder, where a stirring column is fixedly connected. Fixed columns are fixedly connected above and below the surface of the stirring column. An upper water-blocking plate and a lower water-blocking plate are fixedly connected to the end of the fixed column away from the stirring column, respectively. The stirring column, fixed column, upper water-blocking plate, and lower water-blocking plate are all hollow. The stirring column is connected to a rotary joint and a fixed column. The fixed column is connected to the upper water-blocking plate and the lower water-blocking plate, respectively. Both the upper and lower water-blocking plates have inlets.

[0007] The beneficial effects of this utility model are as follows: 1. This utility model employs a fixed connection between the filter cylinder and the centrifugal sedimentation cover, combined with the positioning of the inlet and outlet pipes, to create a reasonable path for water flow within the filter cylinder, thereby improving filtration efficiency. The permeable holes on the support plate evenly distribute the water flow, and the connection design between the rotary joint and the main drain pipe provides a basis for backwashing. The filter core fixed by the support ring effectively intercepts impurities. The drive motor rotates the stirring column, the fixed column, and the water-blocking plate. Utilizing the hollow structure and the inlet, impurities are quickly collected and discharged during backwashing. The overall structure is compact, suitable for farmland scenarios with limited space, and cleaning can be completed without frequent disassembly. Balancing filtration effect and ease of operation, this device boasts advantages such as high-efficiency filtration, convenient automatic backwashing, compact structure for easy maintenance, and highly replaceable filter cores.

[0008] 2. This utility model features a main drain pipe extending to the outside of the filter cartridge and equipped with a solenoid valve, enabling automated control of backwashing and wastewater discharge. Manual operation is eliminated, reducing labor costs and operational complexity. The solenoid valve precisely controls the timing and duration of discharge, ensuring thorough removal of impurities during backwashing while preventing water waste due to excessive discharge. This design allows the device to automatically complete the discharge process during filtration, ensuring continuous filtration, improving overall efficiency, and is particularly suitable for unattended or frequently operating scenarios in agricultural irrigation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the filter cylinder and filter screen core structure of this utility model; Figure 3 This is a schematic diagram of the structure of the stirring column, fixing column, upper water-blocking plate and lower water-blocking plate of this utility model; Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0010] In the diagram: 1. Filter cylinder; 2. Centrifugal sedimentation cover; 3. Inlet pipe; 4. Outlet pipe; 5. Support plate; 6. Water permeable hole; 7. Main drain pipe; 8. Support ring; 9. Filter screen core; 10. Top cover; 11. Drive motor; 12. Stirring column; 13. Fixed column; 14. Upper water baffle plate; 15. Lower water baffle plate; 16. Sewage inlet; 17. Rotary joint; 18. Solenoid valve; 19. Centrifugal drain pipe. Detailed Implementation

[0011] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0012] like Figures 1 to 4As shown, a centrifugal vertical backwashing filtration device includes a filter cylinder 1. A centrifugal sedimentation cover 2 is fixedly connected to the bottom of the filter cylinder 1 via a flange and bolts. An inlet pipe 3 connects to the bottom right side of the filter cylinder 1, and an outlet pipe 4 connects to the top left side of the filter cylinder 1. A support plate 5 is fixedly connected inside the filter cylinder 1. Several permeable holes 6 are provided on the top of the support plate 5, evenly distributed in a ring shape on the top of the support plate 5. A rotary joint 17 is fixedly connected to the top of the support plate 5, and a main drain pipe 7 connects to the bottom of the support plate 5. The main drain pipe 7 is connected to the rotary joint 17. 7. A support ring 8 is fixedly connected inside the filter cylinder 1. The support plate 5 is located above the water inlet pipe 3. The top of the support ring 8 is fixedly connected to the filter screen core 9 by screws. The operator can remove the top cover 10 and then remove the screws fixing the filter screen core 9 to remove the filter screen core 9. The top of the filter cylinder 1 is fixedly connected to the top cover 10 by flanges and bolts. The top of the top cover 10 is fixedly connected to the top of the top cover 10. The output end of the drive motor 11 passes through the top cover 10 and extends to the inside of the filter cylinder 1. A stirring column 12 is fixedly connected inside the filter cylinder 1. The surface of the stirring column 12 is fixedly connected to the top and bottom of the stirring column 12. A fixed column 13 is fixedly connected to an upper water-blocking plate 14 and a lower water-blocking plate 15 at its end away from the stirring column 12. The stirring column 12, fixed column 13, upper water-blocking plate 14, and lower water-blocking plate 15 are all hollow. The stirring column 12 is connected to a rotary joint 17 and a fixed column 13. The fixed column 13 is connected to both the upper water-blocking plate 14 and the lower water-blocking plate 15. Both the upper water-blocking plate 14 and the lower water-blocking plate 15 have inlets 16 on their surfaces. The rotary joint 17 is a common existing technology and is common knowledge to those skilled in the art; therefore, it will not be described in detail here. The upper water-blocking plate 14 and... The lower water-blocking plates 15 are all located inside the filter core 9. All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art, and this application will not describe them in detail.

[0013] refer to Figure 1 The outlet of the main drain pipe 7 extends to the outside of the filter cylinder 1. A solenoid valve 18 is installed on the surface of the main drain pipe 7, and the solenoid valve 18 is located outside the filter cylinder 1.

[0014] As a technical optimization of this utility model, the main drain pipe 7 extends to the outside of the filter cartridge 1 and is equipped with a solenoid valve 18, enabling automated control of backwashing and sewage discharge. This eliminates the need for manual operation, reducing labor input and operational complexity. The solenoid valve 18 precisely controls the timing and duration of sewage discharge, ensuring thorough removal of impurities during backwashing while avoiding water waste caused by excessive discharge. This design allows the device to automatically complete the sewage discharge process during filtration, ensuring continuous filtration, improving overall work efficiency, and is particularly suitable for unattended or frequently operating scenarios in agricultural irrigation.

[0015] refer to Figure 1 The bottom of the centrifugal sedimentation cover 2 is connected to a centrifugal drain pipe 19.

[0016] As a technical optimization of this utility model, the centrifugal discharge pipe 19 connected to the bottom of the centrifugal sedimentation cover 2 can fully utilize the centrifugal effect of the centrifugal sedimentation cover 2. After the water flows into the filter cylinder 1, under the action of centrifugal force, the heavier silt will settle into the centrifugal sedimentation cover 2 and then be directly discharged through the centrifugal discharge pipe 19, reducing the impact and clogging of silt on the filter screen core 9. This design distributes the filtration pressure of the filter screen core 9, extends the cleaning cycle and service life of the filter screen core 9, and at the same time improves the adaptability of the overall filtration device to water sources with high sand content, ensuring the stability of the filtered water quality.

[0017] refer to Figure 2 The filter cartridge 1 is provided with a first sealing ring at both the top and bottom.

[0018] As a technical optimization of this utility model, the first sealing rings at the top and bottom of the filter cylinder 1 can significantly enhance the sealing performance between the filter cylinder 1 and the top cover 10 and the centrifugal sedimentation cover 2. This effectively prevents water from leaking through the connection gaps under pressure, ensures that the filter cylinder 1 maintains a stable working pressure, and ensures that the water flows through the filter screen core 9 along the preset path to complete filtration.

[0019] refer to Figure 2 The bottom of the top cover 10 is fixedly connected with a second sealing ring, and the bottom of the second sealing ring is in contact with the top of the filter core 9.

[0020] As a technical optimization of this utility model, the second sealing ring at the bottom of the top cover 10 is fitted to the top of the filter core 9, further enhancing the sealing of the filtration path. This effectively prevents unfiltered water from flowing directly into the outlet pipe 4 through the gap between the top of the filter core 9 and the top cover 10, ensuring that all water entering the filter cylinder 1 must pass through the filtration stage of the filter core 9, thus improving filtration accuracy. This design avoids the problem of water quality degradation caused by unfiltered water mixing with filtered water, ensuring the cleanliness of irrigation water and providing a more reliable water source guarantee for drip irrigation, sprinkler irrigation, and other equipment.

[0021] refer to Figure 2 Both the first and second sealing rings are made of rubber.

[0022] As a technical optimization of this utility model, the first and second sealing rings are made of rubber. Utilizing the excellent elasticity and sealing properties of rubber, they can tightly fit the connection points, maintaining sealing performance over a long period. The rubber material is water-resistant and wear-resistant, adapting to the humid working environment of agricultural irrigation. It is not easily damaged by prolonged contact with water or slight friction, extending the service life of the sealing rings. This reduces problems such as leakage and incomplete sealing caused by sealing ring failure, lowers the frequency and cost of maintenance and replacement, and ensures the long-term stable operation of the device.

[0023] The working principle and usage process of this utility model are as follows: Before using the centrifugal vertical backwashing filter device, the entire device must be inspected. Check whether the flange and bolt connections between the filter cylinder 1 and the top cover 10 and the centrifugal sedimentation cover 2 are secure to avoid any loosening. Check whether the first and second sealing rings are intact and whether there are any problems such as damage or deformation that affect the sealing, and ensure that the sealing performance of each connection part meets the standards. At the same time, confirm that the solenoid valve 18 on the main drain pipe 7 is in the closed state and the centrifugal drain pipe 19 is also kept closed to prevent water leakage when water is introduced later.

[0024] After the inspection is completed, the filtration operation begins. First, the valve of the inlet pipe 3 is opened, and the water to be filtered enters the filter cylinder 1 through the inlet pipe 3. After entering, the water flows to the area below the support plate 5, and then flows upward evenly through the evenly distributed permeable holes 6 on the support plate 5, reaching the filter screen core 9 fixed at the top of the support ring 8. The mud, sand, and impurities in the water are intercepted by the filter screen core 9, and the filtered clean water continues to flow upward, finally flowing out from the outlet pipe 4 at the top left side of the filter cylinder 1, providing a suitable water source for agricultural irrigation systems such as drip irrigation and sprinkler irrigation. During the filtration process, the water flow status of the outlet pipe 4 can be observed. If the water flow is stable and there is no significant decrease in flow rate, it indicates that the filter screen core 9 is not seriously blocked and normal filtration can continue. At the same time, when the water flows in the filter cylinder 1, the centrifugal sedimentation cover 2 will use the centrifugal force generated by the water flow to cause the heavier mud and sand in the water to settle inside the centrifugal sedimentation cover 2. These settled mud and sand will be temporarily stored in the centrifugal sedimentation cover 2, awaiting subsequent processing.

[0025] If, after a period of use, the water flow rate from outlet pipe 4 is significantly reduced, it indicates that a large amount of impurities have adhered to the surface of filter core 9, requiring backwashing to restore the filtration effect. During backwashing, first close the valve of inlet pipe 3 to stop water intake, then start the drive motor 11 on the top of top cover 10. The output of drive motor 11 drives the stirring column 12 located inside filter cylinder 1 to rotate. During the rotation of stirring column 12, it will drive the fixed column 13 above and below its surface to rotate synchronously. The fixed column 13, in turn, drives the upper water blocking plate 14 and the lower water blocking plate 15, which are away from the stirring column 12, to rotate inside filter core 9. When the upper and lower water-blocking plates 14 and 15 rotate, they generate centrifugal force, which peels off the impurities attached to the inner wall of the filter core 9. Since the stirring column 12, the fixed column 13, the upper water-blocking plate 14, and the lower water-blocking plate 15 are all hollow, and the stirring column 12 is connected to the rotary joint 17, the stirring column 12 is connected to the fixed column 13, and the fixed column 13 is connected to the upper water-blocking plate 14 and the lower water-blocking plate 15 respectively, the peeled impurities will enter the hollow structure through the inlet 16 on the surface of the upper water-blocking plate 14 and the lower water-blocking plate 15, and then flow into the main drain pipe 7 through the fixed column 13, the stirring column 12, and the rotary joint 17 in sequence. At this time, the solenoid valve 18 on the main drain pipe 7 is opened, and the impurities will be discharged from the main drain pipe 7 with the water flow. The drive motor 11 is kept running for a period of time until the water discharged from the main drain pipe 7 becomes clear, indicating that the impurities on the filter core 9 have been thoroughly cleaned. Then the drive motor 11 and the solenoid valve 18 are turned off. Next, open the valve of the centrifugal drain pipe 19 to discharge the sediment in the centrifugal settling cover 2. After the sediment has been discharged, close the valve of the centrifugal drain pipe 19. Finally, open the valve of the inlet pipe 3 again and observe whether the water flow from the outlet pipe 4 has returned to normal. After confirming that there are no leaks in any part of the device and that the filtration effect meets the standards, the device can be put back into normal filtration operation to continuously provide clean water for agricultural irrigation.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal vertical backwashing filtration device, comprising a filter cylinder (1), characterized in that: The bottom of the filter cylinder (1) is fixedly connected to a centrifugal sedimentation cover (2) by a flange and bolts. The bottom right side of the filter cylinder (1) is connected to an inlet pipe (3), and the top left side of the filter cylinder (1) is connected to an outlet pipe (4). A support plate (5) is fixedly connected inside the filter cylinder (1). A water permeable hole (6) is opened on the top of the support plate (5). The number of water permeable holes (6) is several. The water permeable holes (6) are evenly distributed in a ring on the top of the support plate (5). A rotary joint (17) is fixedly connected to the top of the support plate (5). The bottom of the support plate (5) is connected to a main sewage pipe (7). The main sewage pipe (7) is connected to the rotary joint (17). A support ring (8) is fixedly connected inside the filter cylinder (1). The support plate (5) is located above the inlet pipe (3). A filter screen core (9) is fixedly connected to the top of the support ring (8). The top of the filter cylinder (1) is connected to a flange and bolts. A top cover (10) is fixedly connected to the filter cylinder (1) by bolts. A drive motor (11) is fixedly connected to the top of the top cover (10). The output end of the drive motor (11) passes through the top cover (10) and extends into the filter cylinder (1). A stirring column (12) is fixedly connected to the inside of the filter cylinder (1). Fixed columns (13) are fixedly connected above and below the surface of the stirring column (12). An upper water-blocking plate (14) and a lower water-blocking plate (15) are fixedly connected to the end of the fixed column (13) away from the stirring column (12). The lower water-blocking plate (15), the stirring column (12), the fixed column (13), the upper water-blocking plate (14) and the lower water-blocking plate (15) are all hollow. The stirring column (12) is connected to the rotary joint (17). The stirring column (12) is connected to the fixed column (13). The fixed column (13) is connected to the upper water-blocking plate (14) and the lower water-blocking plate (15) respectively. The surfaces of the upper water-blocking plate (14) and the lower water-blocking plate (15) are all provided with sewage inlets (16).

2. The centrifugal vertical backwashing filter device according to claim 1, characterized in that: The outlet of the main drain pipe (7) extends to the outside of the filter cylinder (1), and a solenoid valve (18) is provided on the surface of the main drain pipe (7). The solenoid valve (18) is located outside the filter cylinder (1).

3. A centrifugal vertical backwashing filter device according to claim 2, characterized in that: The bottom of the centrifugal sedimentation cover (2) is connected to a centrifugal sewage pipe (19).

4. A centrifugal vertical backwashing filter device according to claim 3, characterized in that: The filter cartridge (1) is provided with a first sealing ring at both the top and bottom.

5. A centrifugal vertical backwashing filter device according to claim 4, characterized in that: The bottom of the top cover (10) is fixedly connected to a second sealing ring, and the bottom of the second sealing ring is in contact with the top of the filter core (9).

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