Novel automatic cleaning basket type filter

Abstract

The utility model relates to a novel automatic cleaning basket type filter which comprises a motor and a shell, and a transmission shaft connected with the output end of the motor penetrates into a sealing cover and a sealing box which are fixed at the top of the shell; the lower end of the transmission shaft is connected with a filter element cleaning plate which can be arranged in the filter element; a blow-off pipe connected with the lower end of the filter element is led out from the shell, and the tail end of the blow-off pipe is connected with an automatic valve; an inlet pressure transmitter and an outlet pressure transmitter are installed in pipe bodies of an inlet flange and an outlet flange on the two sides of the shell. And the motor, the inlet pressure transmitter, the outlet pressure transmitter and the automatic valve are respectively and electrically connected with a PLC (Programmable Logic Controller) in the equipment automatic control device through cables. The pressure difference of a fluid inlet and a fluid outlet passing through the filter can be monitored in real time, the blockage degree of the filter element is automatically judged through the equipment automatic control device, and blockages are automatically cleaned. The filter element cleaning efficiency is high, the cleaning effect is good, the blockage degree of the filter element is judged timely and accurately, and the using effect is remarkable.

Description

Technical Field

[0001] This utility model relates to a filtration device for pump equipment, and in particular to a novel automatic cleaning basket filter. Background Technology

[0002] In the fluid transport systems of the petroleum industry, pumps are responsible for transporting various fluids, such as oil, natural gas, and water, from one location to another, ensuring the smooth operation of the entire production process. In this system, basket filters, as a key component ensuring the stability of fluid transport, are of paramount importance. The main working principle of a basket filter is to filter the fluid through its internal filter element, effectively intercepting impurities and particles, thereby preventing pipeline blockage and avoiding wear and tear on pumps caused by impurities, extending the service life of the equipment, and ensuring continuous production. Offshore platforms, as important operational sites for marine resource development, have special requirements for pumps and related supporting facilities. The stable operation of basket filters on offshore platforms is crucial for the normal operation of the entire production process.

[0003] Existing basket filters have revealed a series of inconveniences in practical applications on offshore platforms:

[0004] 1. When the filter element becomes clogged, the traditional basket filter's troubleshooting process is extremely cumbersome. First, it requires shutting down any running pumps, an operation that directly impacts production.

[0005] 2. After shutdown, staff need to disassemble the filter housing. This process is difficult and labor-intensive due to the confined space of the offshore platform and the harsh marine environment. Only after disassembly can the clogged filter element be removed for cleaning or replacement.

[0006] 3. The cleaning of the filter element relies entirely on manual operation, which not only consumes a lot of manpower and time, but also affects the cleaning effect due to the skill level and work efficiency of the operator. In addition, the cleaning process will generate sewage and industrial waste.

[0007] 4. More importantly, the detection of filter element clogging relies primarily on manual inspection. On offshore platforms, inspection work faces numerous challenges, such as adverse weather conditions and complex equipment layouts, which significantly limit the frequency and timeliness of manual inspections. In some harsh marine environments, such as strong winds, heavy rain, or dense fog, manual inspections are even difficult to conduct. This makes it difficult to detect filter element clogging in a timely manner; by the time it is discovered, the clogging is often quite severe, further increasing the difficulty of cleaning and even causing the filter element to deform and become unusable, posing a greater threat to the normal operation of pumps and other equipment.

[0008] 5. Frequent disassembly and reassembly of basket filters inevitably cause wear and tear on the filter's seals. Once the seals are worn, leakage risks arise. On offshore platforms, fluid leaks not only waste resources but can also cause serious pollution to the marine environment and increase safety hazards in production operations.

[0009] 6. To cope with frequent maintenance needs, a large number of spare parts and professional maintenance personnel are required, further increasing operating costs. Statistics show that on some offshore platforms, the maintenance cost of traditional basket filters accounts for more than 20% of the total operating cost of pump equipment, becoming a significant factor restricting the improvement of production efficiency.

[0010] 7. Numerous safety risks exist during the manual disassembly of basket filters. High-pressure fluid may remain in the pipelines of pump-type equipment during operation. If this high-pressure fluid is not thoroughly released and treated during filter cleaning or replacement, a leak could result in the fluid being ejected at extremely high speeds, posing a serious threat to the lives of operators. Improper installation or damage to seals during disassembly and installation could lead to leaks and accidents after the equipment is restarted. Furthermore, the unique environment of offshore platforms often presents significant challenges to rescue efforts in the event of an accident. For example, adverse weather conditions can hinder the operation of rescue vessels and helicopters, further exacerbating the consequences of the accident.

[0011] 8. Existing basket filters generally lack intelligent monitoring and control functions. The automatic control devices on the production floor cannot monitor the filter element's clogging status in real time, and the judgment of when to clean it mainly relies on the operator's experience. This experience-based judgment method is highly subjective and uncertain. On the one hand, due to the varying levels of experience among operators, misjudgments of filter element clogging may occur, leading to untimely cleaning. When the filter element is severely clogged and not cleaned in time, it will increase the operating resistance of pumps, increase energy consumption, and may even cause equipment failure. On the other hand, over-maintenance may also occur, i.e., cleaning is performed before the filter element has reached the point where cleaning is necessary. This not only wastes human and material resources but also increases the risk of equipment damage due to frequent disassembly.

[0012] To solve the above problems, on-site technicians have done a great deal of work, resulting in the following patented technologies:

[0013] Patent application number 201922322186.3 discloses a basket filter, belonging to the technical field of filtration devices. It includes a filter body comprising a cylindrical body and a detachable cover. An inlet pipe, an outlet pipe, and a drain pipe are fixedly connected to the side wall of the cylindrical body. A filter basket is installed inside the inner cavity of the cylindrical body, and a cleaning mechanism is installed inside the filter basket. The cleaning mechanism includes a rotating shaft rotatably connected to the cover and at least one row of first brush bristles fixedly connected to the side wall of the rotating shaft. The first brush bristles are arranged along the length of the rotating shaft, with one end away from the rotating shaft contacting the inner wall of the cylindrical body. A motor driving the rotating shaft is installed on the cover, and the output end of the motor is connected to the top of the rotating shaft. This invention offers the advantages of automatic cleaning, reducing the frequency of manual cleaning of the filter basket, and making it more convenient to use.

[0014] The aforementioned utility model has a partial automatic cleaning function, which can be cleaned by manually operating the motor, reducing the workload of manually cleaning the filter basket and making it more convenient to use. However, it is still necessary to manually observe through the observation window to determine the degree of clogging of the filter element before performing manual operation and cleaning.

[0015] Patent application CN202420641269.7 discloses a basket filter, including a cylindrical body, a filter basket, and a top cover. The cylindrical body has an internally defined receiving cavity, and inlet and outlet pipes extend outward from both sides of the cylindrical body, both communicating with the receiving cavity. The filter basket is detachably installed within the receiving cavity, and a cleaning component is installed inside the filter basket for cleaning the liquid inside the basket. The top cover is detachably mounted on the top of the cylindrical body to seal the receiving cavity. Because the top cover is detachably connected to the top of the cylindrical body, when the filtration efficiency of the filter basket decreases, only the top cover needs to be removed, and the filter basket taken out of the receiving cavity for cleaning. The structure is simple and the operation is convenient. Furthermore, the cleaning component located inside the filter basket can remove impurities from the liquid, further improving the filtration efficiency.

[0016] In the aforementioned invention, the cleaning component is installed inside the filter basket. When the filter needs cleaning, the top cover must be removed, and the filter basket must be taken out of the housing cavity for cleaning. During operation, the filter cannot be automatically cleaned, and the equipment must be stopped. This makes it impossible to clean the filter in a timely and effective manner, affecting the stability and service life of the equipment. Long-term storage of the cleaning component inside the filter basket not only affects the filtration effect but also causes damage to the cleaning component itself, affecting the cleaning effect. Long-term exposure of the cleaning component to working pressure can cause deformation of the overall structure of the filter basket.

[0017] To address the aforementioned problems with existing basket filters, their cleaning devices mostly employ complex mechanical structures, resulting in large equipment sizes that are difficult to adapt to the confined spaces of offshore platforms. These complex mechanical structures also increase the equipment's failure rate and maintenance difficulty. On offshore platforms, equipment malfunctions often present significant challenges for repair, requiring not only specialized personnel and equipment but also significant time constraints due to weather and other factors. Furthermore, some existing automated cleaning devices still require manual observation and disassembly of certain components before operation.

[0018] In summary, both traditional basket filters and some existing automatic cleaning devices have numerous limitations in their application on offshore platforms, failing to meet the requirements of high efficiency, safety, and low maintenance. Therefore, it is essential to develop a new type of basket filter suitable for the special operating conditions of offshore platforms, while also being usable on land-based production sites. Summary of the Invention

[0019] The purpose of this invention is to provide a novel automatic cleaning basket filter that solves the problems of existing basket filters where filter elements require manual inspection and cleaning, early-stage clogging is difficult to detect, and severe clogging is difficult to clean, affecting the normal operation of pumps and other equipment. This new design enables automatic monitoring and cleaning of the filter element, preventing severe clogging, reducing the workload of daily filter cleaning for workers, and mitigating the adverse consequences of severe clogging and frequent filter disassembly. It ensures the normal use of the filter, extends its service life, guarantees the safety of workers, ensures normal production operations, reduces filter operation and maintenance costs, and improves economic efficiency.

[0020] The technical solution of this utility model is as follows: a novel automatic cleaning basket filter, comprising a motor and a housing, wherein: a drive shaft connected to the output end of the motor passes through a sealing cover and a sealing box fixed to the top of the housing; the lower end of the drive shaft is connected to a filter element cleaning plate that can be inserted into the filter element; a drain pipe connected to the lower end of the filter element leads out from the housing and the end of the drain pipe is connected to an automatic valve; an inlet pressure transmitter and an outlet pressure transmitter are installed in the pipe bodies of the inlet flange and the outlet flange on both sides of the housing; the motor, the inlet pressure transmitter, the outlet pressure transmitter, and the automatic valve are electrically connected to the PLC in the automatic control device of the equipment via cables.

[0021] Preferably, the filter element cleaning plate is a "U"-shaped frame plate smaller than the inner diameter of the filter element, and a carbide blade is provided on the outer edge of the frame of the filter element cleaning plate except for the upper frame.

[0022] Preferably, the carbide blades disposed on the outer edge of the filter element cleaning plate frame have a gap of 0.3mm-0.7mm between them and the filter element.

[0023] Preferably, the sealing box mainly consists of a gland bolt, a packing gland, a packing box, and sealing packing. The packing box is welded to the outside of the center hole at the upper end of the sealing cover. The sealing packing is filled around the drive shaft in the packing box. The packing gland has a center hole and is fixed to the packing box by the gland bolt, pressing the sealing packing around the drive shaft.

[0024] Preferably, both the packing box and the packing gland in the sealing box are provided with flanges that can be machined with bolt connection holes. The lower outer circle of the packing gland matches the inner circle of the packing box, and the height of the lower outer circle of the packing gland is set between 1.5cm and 3cm. A sealing gasket is also installed between the packing gland and the flange of the packing box.

[0025] Preferably, the motor is a low-speed asynchronous motor, and the motor speed is set between 60 and 120 revolutions per minute.

[0026] Preferably, both the outlet pressure transmitter and the inlet pressure transmitter are piezoelectric or piezoresistive pressure transmitters; the automatic valve is a solenoid valve.

[0027] Preferably, the lower end of the drive shaft is provided with an external thread and is connected to the center hole of the upper edge of the filter element cleaning plate by a nut.

[0028] Preferably, the lower end of the filter element is connected to the drain pipe via a quick connector. The outer buckle of the quick connector is connected to the internal thread of the center hole at the lower end of the filter element, and the inner buckle of the quick connector is connected to the external thread of the drain pipe welded to the center hole at the lower end of the housing.

[0029] The drain pipe is an L-shaped pipe with one end connected to an inner buckle and the other end connected to an automatic valve, which in turn connects to the drain line. The upper surface of the sealing cap is provided with a cleaning component handle, and the lower surface is coated with an anti-corrosion coating.

[0030] Compared with existing filters, the significant advantages of this invention are as follows:

[0031] 1. In this utility model, an inlet pressure transmitter and an outlet pressure transmitter are installed in the pipe body of the inlet flange and outlet flange of the shell. The pressure difference between the inlet and outlet of the fluid passing through the filter can be monitored in real time. The automatic control device of the equipment can automatically determine the degree of clogging of the filter element and automatically clean the blockage.

[0032] 2. The filter uses a filter element cleaning plate with carbide blades. The U-shaped cleaning plate fits snugly against the inner wall of the filter element and is driven by an electric motor, greatly improving cleaning efficiency and effectiveness. Any remaining dirt in the cleaned filter element can be further rinsed with fluid, preventing residue buildup.

[0033] 3. Connecting the drain pipe to the lower end of the filter element via a quick connector simplifies the filter element replacement process and shortens maintenance time.

[0034] 4. The tight fit of the sealing packing, packing gland, and gland bolts in the sealing box improves the reliable sealing performance of the drive shaft under high pressure.

[0035] In summary, this invention can automatically detect the pressure difference between the inlet and outlet of the filter, determine the degree of clogging of the filter element, and drive a motor through an automatic control device to move the filter element cleaning plate to clean the dirt and impurities clogging the inside of the filter element. The automatic control device also controls the opening duration of the automatic valve to discharge the cleaned impurities into a waste storage device. This filter has high filter element cleaning efficiency and good cleaning effect, and its judgment of the degree of clogging is timely and accurate, effectively avoiding losses and equipment failures caused by premature or delayed filter element replacement due to human error.

[0036] This invention enables automatic online cleaning of filter elements, reducing downtime due to filter failures, extending the service life of pumps, increasing filter maintenance cycles, and lowering filter operation and maintenance costs. Simultaneously, it fundamentally avoids the personal safety risks associated with personnel contact with high-pressure fluids and the environmental risks of fluid leakage that arise from disassembling and replacing filter elements.

[0037] The filter cartridge of this filter adopts a standardized design and is connected to the drain pipe via a quick connector. It can use filter cartridges of different mesh sizes and materials, making it suitable for various working conditions and providing significant performance benefits. Attached Figure Description

[0038] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0039] Figure 1 This is a schematic diagram of the structure of this utility model.

[0040] In the diagram: 1. Motor; 2. Gland bolt; 3. Packing gland; 4. Sealing packing; 5. Sealing cover; 6. Outlet pressure transmitter; 7. Outlet flange; 8. Housing; 9. Automatic valve; 10. Drain pipe; 11. Inner buckle; 12. Outer buckle; 13. Filter element; 14. Filter element cleaning plate; 15. Filter element handle; 16. Inlet flange; 17. Inlet pressure transmitter; 18. Sealing ring; 19. Fastening bolt; 20. Cleaning assembly handle; 21. Drive shaft. Detailed Implementation

[0041] The accompanying drawings are for reference and illustration only and are not intended to limit the scope of protection of this utility model. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0043] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] See Figure 1 A novel automatic cleaning basket filter includes a motor 1 and a housing 8, wherein: a drive shaft 21 connected to the output end of the motor 1 passes through a sealing cover 5 and a sealing box fixed to the top of the housing 8; the lower end of the drive shaft 21 is connected to a filter element cleaning plate 14 that can be inserted into a filter element 13; a drain pipe 10 connected to the lower end of the filter element 13 extends out of the housing 8 and the end of the drain pipe 10 is connected to an automatic valve 9; an inlet pressure transmitter 17 and an outlet pressure transmitter 6 are installed in the pipe bodies of the inlet flange 16 and the outlet flange 7 on both sides of the housing 8; the motor 1, the inlet pressure transmitter 17, the outlet pressure transmitter 6 and the automatic valve 9 are electrically connected to a PLC in the automatic control device of the equipment via cables.

[0045] The utility model adds an automatic detection function and a cleaning function based on the pressure difference to the filter. The utility model makes full use of the equipment automatic control device at the construction site, and uses the PLC in the equipment automatic control device to program the cleaning procedure of the filter, determine the cleaning pressure difference and the cleaning duration of the motor 1. The inlet pressure transmitter 17 and the outlet pressure transmitter 6 installed in the inlet flange 16 and the outlet flange 7 on both sides of the housing 8 detect the fluid pressure difference at the inlet and outlet of the housing 8. The detected data is transmitted to the PLC in the equipment automatic control device, and the motor 1 is started for cleaning according to the set pressure difference of the inlet and outlet fluids, and the operation of the motor 1 is stopped according to the set cleaning duration.

[0046] The sewage after cleaning is discharged into the dirt storage device through the sewage discharge pipe 10 connected to the lower end of the filter element 13 and led out from the housing 8 and the automatic valve 9. The equipment automatic control devices at offshore platforms and onshore production sites are generally installed in the central control room with on-duty personnel, and the on-duty personnel can observe at any time and can promptly discover various abnormal situations of the equipment.

[0047] Through the PLC in the equipment automatic control device, the cleaning procedure of this device can be edited, the cleaning pressure difference threshold of the fluid in the inlet pressure transmitter 17 and the outlet pressure transmitter 6 can be set, and the set threshold is adjustable; at the same time, the rotation speed and working duration of the motor 1 can be adjusted, and the closing time of the automatic valve 9 can be delayed to make the dirt discharge cleaner and more thorough.

[0048] The utility model has intelligent monitoring and control functions, can real-time monitor the clogging state of the filter element through the equipment automatic control device, no longer depends on the operator's experience to judge the cleaning time, and eliminates the subjectivity and uncertainty existing in the artificial judgment method. It effectively avoids all adverse consequences caused by over-cleaning and serious clogging of the filter, and is especially suitable for offshore platforms and is also suitable for onshore pump conveying equipment.

[0049] On the basis of the above-mentioned embodiment 1, the utility model also has the following embodiments: A preferred embodiment: The filter element cleaning plate 14 is a "mouth" - shaped frame plate smaller than the inner diameter of the filter element 13, and hard alloy blades are arranged on the outer edge of the frame of the filter element cleaning plate 14 except for the upper frame.

[0050] A preferred embodiment: There is a gap of 0.3 mm to 0.7 mm between the hard alloy blades arranged on the outer edge of the frame of the filter element cleaning plate 14 and the filter element 13, and the dirt and impurities adhering to the inner wall of the filter element 13 can be scraped and peeled off by the hard alloy blades.

[0051] In a preferred embodiment, the sealing box mainly consists of a gland bolt 2, a packing gland 3, a packing box, and sealing packing 4. The packing box is welded to the outside of the center hole at the upper end of the sealing cover 5. The sealing packing 4 is filled around the drive shaft 21 in the packing box. The packing gland 3 has a center hole and is fixed to the packing box by the gland bolt 2, pressing the sealing packing 4 tightly around the drive shaft 21. The sealing packing 4 can be a sealing gasket with a center hole or a used belt wrapped around the drive shaft 21, and pressed tightly by the packing gland 3 to achieve good sealing performance.

[0052] In a preferred embodiment: both the packing box and the packing gland 3 in the sealing box are provided with flanges capable of machining bolt connection holes. The lower outer circle of the packing gland 3 matches the inner circle of the packing box, and the height of the lower outer circle of the packing gland 3 is set between 1.5cm and 3cm to compress the sealing packing 4 in the packing box. A sealing gasket is also installed between the packing gland 3 and the flange of the packing box. This further improves its sealing performance and prevents fluid leakage from the housing 8.

[0053] In a preferred embodiment, the motor 1 is a low-speed asynchronous motor, and the speed of the motor 1 is set between 60-120 rpm.

[0054] In a preferred embodiment: both the outlet pressure transmitter 6 and the inlet pressure transmitter 17 are piezoelectric or piezoresistive pressure transmitters; the automatic valve 9 is a solenoid valve.

[0055] In a preferred embodiment, the lower end of the drive shaft 21 is provided with an external thread and is connected to the center hole of the upper frame of the filter cleaning plate 14 by a nut.

[0056] In a preferred embodiment: the lower end of the filter element 13 is connected to the drain pipe 10 via a quick connector. The outer buckle 12 of the quick connector is connected to the internal thread of the center hole at the lower end of the filter element 13, and the inner buckle 11 of the quick connector is connected to the external thread of the upper end of the drain pipe 10, which is welded into the center hole at the lower end of the housing 8.

[0057] In a preferred embodiment: the drain pipe 10 is an L-shaped pipe with one end connected to the inner buckle 11 and the other end connected to the automatic valve 9, which in turn connects to the drain line to discharge waste into a waste storage device; the upper surface of the sealing cover 5 is provided with a cleaning component handle 20, and the lower surface is coated with an anti-corrosion coating to resist the corrosiveness of the fluid. The anti-corrosion coating can be a polytetrafluoroethylene coating, an epoxy anti-corrosion coating, an acrylic anti-corrosion coating, or a polyurethane coating.

[0058] The method of using this device is as follows: 1. Connect the housing 8 to the fluid delivery pipeline before the pump through the inlet flange 16 and the outlet flange 7.

[0059] 2. Connect the inner thread 11 of the quick connector to the external thread of the drain pipe 10 welded in the center hole at the bottom of the housing 8;

[0060] 3. Hold the filter element handle 15, align the filter element 13 vertically with the outer buckle 12 of the quick connector connected to the bottom of the housing 8, and rotate the filter element 13 to connect it to the outer buckle 12 of the quick connector.

[0061] 4. Pass the drive shaft 21 of the motor 1 through the sealing box and sealing cover 5 and fix it to the filter element cleaning plate 14 with nuts. Then install the filter element cleaning plate 14 into the filter element 13.

[0062] 5. Install the sealing cover 5, and fasten the sealing cover 5 to the housing 8 with the fastening bolts 19, ensuring that the sealing ring 18 installed therein is compressed into place.

[0063] The fluid in the delivery pipeline enters the filter element 13 through the inlet flange 16, where impurities are intercepted, and the clean fluid is output from the outlet flange 7.

[0064] The inlet pressure transmitter 17 and the outlet pressure transmitter 6 collect fluid pressure data in real time, and the PLC in the automatic control device calculates the pressure difference between the two pressure transmitters. When the pressure difference ΔP between the inlet pressure transmitter 17 and the outlet pressure transmitter 6 reaches a preset threshold, the automatic control device triggers the following action:

[0065] When motor 1 starts, drive shaft 21 drives filter cleaning plate 14 to rotate at a constant speed. The carbide blades on the outer edge of the filter cleaning plate 14 scrape and peel off dirt and impurities from the inner wall of filter element 13. At the same time, automatic valve 9 opens synchronously, and the scraped dirt and impurities are discharged through drain pipe 10.

[0066] The cleaning duration of motor 1 and the closing time of automatic valve 9 are adjustable. After the set cleaning time is reached, motor 1 stops working and automatic valve 9 closes after a 10-second delay to ensure that residual impurities are completely removed.

[0067] The motor 1 has an overload protection function. When the torque of the drive shaft 21 exceeds the limit, the motor 1 will automatically cut off the power and push a fault code through the automatic control device of the equipment for manual handling.

[0068] During use, the sealing performance of the packing gland 3 and sealing ring 18 should be checked periodically, and the sealing pressure should be adjusted by the gland bolt 2 and fastening bolt 19 if necessary.

[0069] Depending on the operating conditions, the differential pressure thresholds of the inlet pressure transmitter 17 and the outlet pressure transmitter 6, as well as the cleaning time of the motor 1, can be modified through the equipment's automatic control device to optimize the cleaning frequency.

[0070] The embodiments described above are merely typical examples, but the present invention is not limited to these embodiments. Those skilled in the art can make modifications without departing from the spirit and teachings of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the inventive spirit and concept of the present invention should be included within the protection scope of the present invention. Therefore, the protection scope is not limited to the above description.

Claims

1. A novel automatic cleaning basket filter, comprising an electric motor and a housing, characterized in that: The drive shaft connected to the output end of the motor passes through the sealing cover and sealing box fixed on the top of the housing; the lower end of the drive shaft is connected to the filter element cleaning plate that can be inserted into the filter element; the drain pipe connected to the lower end of the filter element leads out from the housing and the end of the drain pipe is connected to an automatic valve; the inlet pressure transmitter and outlet pressure transmitter are installed in the pipe body of the inlet flange and outlet flange on both sides of the housing; the motor, inlet pressure transmitter, outlet pressure transmitter and automatic valve are electrically connected to the PLC in the automatic control device of the equipment through cables.

2. The novel automatic cleaning basket filter as described in claim 1, characterized in that, The filter element cleaning plate is a "U"-shaped frame plate smaller than the inner diameter of the filter element, and a carbide blade is set on the outer edge of the frame of the filter element cleaning plate except for the upper frame.

3. A novel automatic cleaning basket filter as described in claim 2, characterized in that, The carbide blades on the outer edge of the filter cleaning plate frame are provided with a gap of 0.3mm-0.7mm between them and the filter element.

4. A novel automatic cleaning basket filter as described in claim 1, characterized in that, The sealing box mainly consists of a gland bolt, a packing gland, a packing box, and sealing packing. The packing box is welded to the outside of the center hole at the upper end of the sealing cover. The sealing packing is filled around the drive shaft in the packing box. The packing gland has a center hole and is fixed to the packing box by the gland bolt, pressing the sealing packing around the drive shaft.

5. A novel automatic cleaning basket filter as described in claim 4, characterized in that, Both the packing box and the packing gland in the sealing box are provided with flanges that can be machined with bolt connection holes. The lower outer circle of the packing gland matches the inner circle of the packing box. The height of the lower outer circle of the packing gland is set between 1.5cm and 3cm. A sealing gasket is also installed between the packing gland and the flange of the packing box.

6. A novel automatic cleaning basket filter as described in claim 3, characterized in that, The motor is a low-speed asynchronous motor, and the motor speed is set between 60-120 rpm.

7. A novel automatic cleaning basket filter as described in claim 6, characterized in that, Both the outlet pressure transmitter and the inlet pressure transmitter are piezoelectric or piezoresistive pressure transmitters; the automatic valve is a solenoid valve.

8. A novel automatic cleaning basket filter as described in claim 6, characterized in that, The lower end of the drive shaft is provided with an external thread and is connected to the center hole of the upper edge of the filter element cleaning plate by a nut.

9. A novel automatic cleaning basket filter as described in claim 8, characterized in that, The lower end of the filter element is connected to the drain pipe via a quick connector. The outer buckle in the quick connector is connected to the internal thread of the center hole at the lower end of the filter element, and the inner buckle in the quick connector is connected to the outer thread of the drain pipe welded to the center hole at the lower end of the housing.

10. A novel automatic cleaning basket filter as described in claim 9, characterized in that, The drain pipe is an L-shaped pipe with one end connected to an inner buckle and the other end connected to an automatic valve, which in turn connects to the drain line. The upper surface of the sealing cap is provided with a cleaning component handle, and the lower surface is coated with an anti-corrosion coating.

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