Full-automatic backwashing filter

Abstract

The invention relates to a full-automatic backwash filter, in particular to the technical field of filters, the full-automatic backwash filter comprises a filter cylinder, the bottom end of the filter cylinder is connected with a sealing plate, the center of the top of the sealing plate is connected with a filter element, one side of the sealing plate is provided with a flow guide inlet, and the center of the sealing plate is provided with a flow guide outlet; the flow guide inlet is formed in the outer part of the filter element, an auxiliary cleaning mechanism is arranged at the top of the filter cylinder body, a multi-way valve is arranged on one side of the filter cylinder body, an auxiliary vibration mechanism is arranged at the top of the filter element, and a valve body liquid inlet is formed in one side of the multi-way valve. The auxiliary cleaning mechanism and the auxiliary chattering mechanism are started and work cooperatively under the instruction of the control system, the multi-way valve switches the flow path to cooperate with pollution discharge, and the filter element is efficiently and automatically cleaned by integrating the auxiliary cleaning mechanism and the auxiliary chattering mechanism, so that the continuity and efficiency of the production process are ensured.

Description

Technical Field

[0001] This application relates to the field of filter technology, and in particular to fully automatic backwashing filters. Background Technology

[0002] Fluid filtration technology is now widely used in industrial production, environmental protection engineering and other fields. Traditional filters mainly intercept impurities through filter screens.

[0003] In the prior art, Chinese Patent Publication No. CN106731132A discloses a fully automatic backwashing filter for marine lubricating oil. This filter includes a drive unit providing rotational driving force, a filter unit for treating lubricating oil, a cleaning control valve for controlling the interconnection of the filter unit's channels, a position measuring device for determining the rotation angle of the drive shaft, a drain device for connecting to a sludge tank, and a controller with a human-machine interface. The output shaft of the drive unit is connected to the power input shaft of the cleaning control valve. The cleaning control valve rotates in conjunction with the filter unit. The position measuring device is mounted on the cleaning control valve, which is connected to the sludge tank via the drain device. The control terminal of the drive unit, the position sensor of the position measuring device, the filter unit, and the control components of the drain device are all connected to the controller. The controller controls compressed air to backwash the filter cartridge according to a program based on parameters such as the filter's operating time and the inlet / outlet oil pressure difference.

[0004] Existing filters are often either standalone filters or have an added backwashing structure. With standalone filters, as filtration time increases, filter screen clogging can lead to increased pressure differential and decreased flow rate, requiring shutdown for manual cleaning or replacement of the filter element, which seriously affects the continuous operating efficiency of the system. When cleaning the filter element only through the backwashing structure, the impurities attached to the surface of the filter element are often difficult to be completely removed by water flow alone, thus requiring frequent cleaning. Summary of the Invention

[0005] The purpose of this application is to provide a fully automatic backwash filter.

[0006] Firstly, the fully automatic backwashing filter provided in this application adopts the following technical solution:

[0007] A fully automatic backwashing filter includes a filter cylinder, a sealing plate connected to the bottom of the filter cylinder, a filter element connected to the top center of the sealing plate, a flow guide inlet on one side of the sealing plate, a flow guide outlet at the center of the sealing plate, the flow guide inlet being located outside the filter element, an auxiliary cleaning mechanism on the top of the filter cylinder, a multi-way valve on one side of the filter cylinder, and an auxiliary vibration mechanism on the top of the filter element.

[0008] By adopting the above technical solution, the fluid to be treated enters the filter cartridge from the guide inlet, located outside the filter element. Under pressure, the fluid penetrates the filter element from the outside to the inside, and impurities are trapped on the outer surface of the filter element. The cleaned fluid enters the interior of the filter element, collects, and flows out from the guide outlet at the center of the sealing plate. When cleaning is required, the auxiliary cleaning mechanism and the auxiliary vibration mechanism are activated under the command of the control system and work together. The multi-way valve switches the flow path to cooperate with the sewage discharge. By integrating the auxiliary cleaning mechanism and the auxiliary vibration mechanism, efficient and automatic cleaning of the filter element is achieved, thereby ensuring the continuity and efficiency of the production process.

[0009] The multi-way valve has a valve body inlet on one side and a valve body outlet on the other side. The connecting end of the valve body inlet is connected to the flow guide inlet, and the connecting end of the valve body outlet is connected to the flow guide outlet. A sludge collection tank is connected to one side of the bottom of the multi-way valve. The sludge collection tank is connected to the valve body inlet through a three-way valve core. A liquid pump is connected to one side of the valve body outlet.

[0010] By adopting the above technical solution, the liquid pump provides power to the system. During normal filtration, the fluid enters the filter through the valve body inlet and the guide inlet. During backwashing, the three-way valve core moves to change the flow path, so that the fluid entering from the valve body inlet or the fluid inside the filter can flush the dirt collection tank and carry the dirt out of the system. The clean fluid always flows out from the valve body outlet.

[0011] The auxiliary cleaning mechanism includes a drive shaft, a cleaning frame, a rotating rod, a cleaning scraper, a servo motor, a toothed groove, and gears. The drive shaft is connected to the top inner wall of the filter cylinder via a sealed bearing. The cleaning frame is fixedly connected to the bottom end of the drive shaft and is slidably connected to the filter cylinder. Rotating rods are connected to the bottom ends of both sides of the cleaning frame via bearings. The rotating rods are located on both sides of the filter element. A cleaning scraper is fixedly connected to the outer wall of the rotating rod. The cleaning scraper is spiral-shaped, and the outer walls of the two sides of the cleaning scraper abut against the inner wall of the filter cylinder and the outer wall of the filter element, respectively.

[0012] By adopting the above technical solution, when backwashing is performed, the servo motor starts and drives the drive shaft to rotate. The drive shaft drives the cleaning frame to rotate inside the filter cylinder. The cleaning frame drives the rotating rods on both sides, which are connected by bearings, to revolve together. The spiral cleaning scraper, which is fixed to the outer wall of the rotating rod, also revolves. Since its two sides abut against the inner wall of the filter cylinder and the outer wall of the filter element, respectively, it scrapes off the impurities attached to the surface during the revolution. The mechanical spiral scraper provides a strong scraping force and a thorough cleaning effect. It is especially suitable for removing stubborn impurities with strong adhesion. The structure is simple, reliable, and durable.

[0013] A servo motor is fixedly connected to the top outer wall of the filter cylinder. The output end of the servo motor is connected to the drive shaft. The servo motor drives the drive shaft to rotate. The rotation of the drive shaft drives the cleaning frame to rotate synchronously. The rotation of the cleaning frame drives the rotating rod and the cleaning scraper to rotate synchronously.

[0014] By adopting the above technical solution, the servo motor of the drive component is placed outside the cylinder, which facilitates maintenance and heat dissipation. The direct drive method ensures the efficiency of power transmission and high-precision control, providing a foundation for the accurate operation of the cleaning mechanism.

[0015] The inner wall of one side of the filter cylinder is provided with a toothed groove, the top of the rotating rod passes through the top of the cleaning rack, and a gear is fixedly connected to the top of the rotating rod, the gear meshing with the toothed groove.

[0016] By adopting the above technical solution, when the cleaning frame is driven by the drive shaft to revolve, the gear at the top of the rotating rod meshes with the tooth groove fixedly installed on the inner wall of one side of the filter cylinder. The gear will be forced to rotate on its own axis on the revolving path, thereby driving the entire rotating rod and the spiral cleaning scraper to rotate on their own axis while revolving. This transforms the single rotation drive into a compound motion combining revolution and rotation. This compound motion causes the cleaning scraper to form a spiral propulsion scraping path relative to the filter element surface, which greatly improves the efficiency and cleanliness of scraping and can more effectively transport the scraped impurities in a specific direction downwards.

[0017] The auxiliary vibration mechanism includes a linkage block, toothed grooves, a connecting rod, a fixed cylinder, a top rod, a spring, and a top ball. The linkage block is fixedly connected to the outer wall at the top center of the filter element. The outer wall of the linkage block is surrounded by toothed grooves, and the teeth of the toothed grooves are inclined.

[0018] By adopting the above technical solution, the linkage block is fixed to the top of the filter element, and the teeth of the toothed groove on its outer wall are inclined. When the cleaning mechanism is working, the top bead can move along the inclined toothed groove. The inclined toothed groove is the key structure for converting rotational motion into periodic linear vibration or impact, which provides the basis for generating the vibration effect.

[0019] A connecting rod is fixedly connected to one side of the bottom outer wall of the cleaning rack, and a fixed cylinder is fixedly connected to one side of the connecting rod. A top rod is embedded in the inner wall of the fixed cylinder, and the top rod is slidably connected to the fixed cylinder.

[0020] By adopting the above technical solution, the connecting rod at the bottom of the cleaning frame drives the fixed cylinder to rotate together with the cleaning frame, and the top rod inside the fixed cylinder can slide relative to it.

[0021] A spring is fixedly connected to one end of the push rod near the fixed cylinder, and the end of the spring away from the push rod is connected to the inner wall of the fixed cylinder. A top bead is embedded in the end of the push rod away from the spring, and the top bead is embedded in the tooth groove.

[0022] By adopting the above technical solution, when the fixed cylinder moves with the connecting rod, the top rod, under the preload of the spring, presses the top ball at its end tightly into the tooth groove. When the top ball slides over the inclined teeth, it compresses the spring and bounces back instantly, generating a high-frequency, periodic micro-impact. This vibration is transmitted to the filter element through the connecting rod and the cleaning frame. The design of the spring and the top ball transforms the continuous rotational motion into efficient intermittent vibration or impact, which can effectively loosen stubborn impurities adhering to the filter element and assist in the cleaning of the scraper. The top ball changes sliding friction into rolling friction, reducing wear.

[0023] A differential pressure sensor is installed on one side of the inlet of the valve body, and a controller is installed on one side of the multi-way valve.

[0024] By adopting the above technical solution, the differential pressure sensor monitors the pressure difference at the inlet of the valve body in real time. When the differential pressure increases to the set value, indicating that the filter element is severely clogged, the differential pressure sensor transmits a signal to the controller. The controller then automatically issues a command to control the servo motor and the three-way valve core in the multi-way valve, and initiates the backwashing program. This achieves fully automatic intelligent operation of the filter without manual intervention. The system can automatically clean when the differential pressure reaches the set value at the optimal time, ensuring stable filtration efficiency and avoiding energy waste or equipment damage caused by untimely cleaning.

[0025] The filter element and the sealing plate are connected by a snap-fit ​​connection, and the filter cylinder and the sealing plate are connected by a quick-opening flange structure.

[0026] By adopting the above technical solution, when the filter element needs to be replaced, the connection between the filter cylinder and the sealing plate can be quickly opened through the quick-opening flange structure. Then, the old filter element can be removed from the sealing plate and the new filter element can be installed through a simple snap-fit ​​connection structure. The snap-fit ​​connection and quick-opening flange structure greatly simplify the filter element replacement and internal filter maintenance process, making maintenance work quick and easy, requiring no special tools, significantly reducing the time and labor costs of equipment maintenance, and improving the ease of use and maintainability of the equipment.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During backwashing, the servo motor starts, driving the drive shaft to rotate. The drive shaft drives the cleaning frame to rotate inside the filter cartridge. The cleaning frame drives the rotating rods on both sides, which are connected by bearings, to revolve together. The spiral cleaning scraper, which is fixed to the outer wall of the rotating rod, also revolves. Since its two sides abut against the inner wall of the filter cartridge and the outer wall of the filter element, it scrapes off the impurities attached to the surface during the revolution. The mechanical spiral scraper provides a strong scraping force and a thorough cleaning effect.

[0029] 2. When the fixed cylinder moves with the connecting rod, the top rod, under the preload of the spring, presses the top ball at its end tightly into the tooth groove. When the top ball slides over the inclined teeth, it compresses the spring and bounces back instantly, generating a high-frequency, periodic micro-impact. This vibration is transmitted to the filter element through the connecting rod and the cleaning frame. The design of the spring and the top ball transforms the continuous rotational motion into efficient intermittent vibration or impact, which can effectively loosen stubborn impurities adhering to the filter element and assist in the cleaning of the scraper. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the internal structure of the filter cylinder according to an embodiment of this application;

[0032] Figure 3 This is a three-dimensional structural diagram of the auxiliary cleaning mechanism according to an embodiment of this application;

[0033] Figure 4 This is a top view of the drive shaft and cleaning frame according to an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the connection structure between the tooth socket and the top bead in an embodiment of this application;

[0035] Figure 6 This is a front view structural diagram of the auxiliary cleaning mechanism according to an embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the auxiliary vibration mechanism structure according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Filter cylinder; 2. Sealing plate; 3. Filter element; 4. Inlet; 401. Outlet; 5. Auxiliary cleaning mechanism; 501. Drive shaft; 502. Cleaning frame; 503. Rotating rod; 504. Cleaning scraper; 505. Servo motor; 506. Gear; 507. Gear; 6. Multi-way valve; 601. Valve body inlet; 602. Valve body outlet; 603. Sludge collection tank; 604. Three-way valve core; 605. Liquid pump; 7. Auxiliary vibration mechanism; 701. Linkage block; 702. Gear; 703. Connecting rod; 704. Fixed cylinder; 705. Top rod; 706. Spring; 707. Top ball; 8. Differential pressure sensor; 9. Controller. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail below.

[0039] Example: A fully automatic backwashing filter includes a filter cylinder 1, a sealing plate 2 connected to the bottom of the filter cylinder 1, a filter element 3 connected to the top center of the sealing plate 2, a flow guide inlet 4 on one side of the sealing plate 2, a flow guide outlet 401 at the center of the sealing plate 2, the flow guide inlet 4 being located outside the filter element 3, an auxiliary cleaning mechanism 5 on the top of the filter cylinder 1, a multi-way valve 6 on one side of the filter cylinder 1, and an auxiliary vibration mechanism 7 on the top of the filter element 3. The fluid to be treated enters the filter cylinder 1 through the flow guide inlet 4 and is located within the filter element 3. Externally, under pressure, fluid penetrates the filter element 3 from the outside in. Impurities are trapped on the outer surface of the filter element 3. The cleaned fluid enters the interior of the filter element 3, collects, and flows out from the guide outlet 401 at the center of the sealing plate 2. When cleaning is required, the auxiliary cleaning mechanism 5 and the auxiliary vibration mechanism 7 are activated under the command of the control system and work together. The multi-way valve 6 switches the flow path to cooperate with the sewage discharge. By integrating the auxiliary cleaning mechanism 5 and the auxiliary vibration mechanism 7, efficient and automatic cleaning of the filter element 3 is achieved, thereby ensuring the continuity and efficiency of the production process.

[0040] A valve body inlet 601 is provided on one side of the multi-way valve 6, and a valve body outlet 602 is provided on the other side of the valve body inlet 601. The connecting end of the valve body inlet 601 is connected to the flow guide inlet 4, and the connecting end of the valve body outlet 602 is connected to the flow guide outlet 401. A sludge collection tank 603 is connected to one side of the bottom of the multi-way valve 6. The sludge collection tank 603 is connected to the valve body inlet 601 through a three-way valve core 604. A liquid pump 605 is connected to one side of the valve body outlet 602. The liquid pump 605 provides power to the system. During normal filtration, the fluid enters the filter through the valve body inlet 601 and the flow guide inlet 4. During backwashing, the three-way valve core 604 is activated to change the flow path, so that the fluid entering from the valve body inlet 601 or the fluid inside the filter can flush the sludge collection tank 603 and carry the dirt out of the system. The clean fluid always flows out from the valve body outlet 602.

[0041] The auxiliary cleaning mechanism 5 includes a drive shaft 501, a cleaning frame 502, a rotating rod 503, a cleaning scraper 504, a servo motor 505, a toothed groove 506, and a gear 507. The drive shaft 501 is connected to the top inner wall of the filter cylinder 1 via a sealed bearing. The cleaning frame 502 is fixedly connected to the bottom end of the drive shaft 501. The cleaning frame 502 is slidably connected to the filter cylinder 1. The rotating rod 503 is connected to the bottom ends of both sides of the cleaning frame 502 via bearings. The rotating rod 503 is located on both sides of the filter element 3. The cleaning scraper 504 is fixedly connected to the outer wall of the rotating rod 503. The cleaning scraper 504 is spiral in shape. The outer walls of the two sides of the cleaning scraper 504 are respectively connected to the inner wall of the filter cylinder 1 and the outer wall of the filter element 3. The filter elements 3 are in contact with each other. During backwashing, the servo motor 505 starts, driving the drive shaft 501 to rotate. The drive shaft 501 drives the cleaning frame 502 to rotate inside the filter cylinder 1. The cleaning frame 502 drives the rotating rods 503 connected to both sides by bearings to revolve together. The spiral cleaning scraper 504, which is fixedly connected to the outer wall of the rotating rod 503, also revolves. Since its two sides are in contact with the inner wall of the filter cylinder 1 and the outer wall of the filter element 3 respectively, it scrapes off the impurities attached to the surface during the revolution. The mechanical spiral scraper provides a strong scraping force and a thorough cleaning effect. It is especially suitable for removing stubborn impurities with strong adhesion. The structure is simple, reliable and durable.

[0042] A servo motor 505 is fixedly connected to the top outer wall of the filter cylinder 1. The output end of the servo motor 505 is connected to the drive shaft 501. The servo motor 505 drives the drive shaft 501 to rotate. The rotation of the drive shaft 501 drives the cleaning frame 502 to rotate synchronously. The rotation of the cleaning frame 502 drives the rotating rod 503 and the cleaning scraper 504 to rotate synchronously. The servo motor 505 is placed outside the cylinder for easy maintenance and heat dissipation. The direct drive method ensures the efficiency of power transmission and high-precision control, providing a basis for the accurate operation of the cleaning mechanism.

[0043] A toothed groove 506 is arranged around one side of the inner wall of the filter cylinder 1. The top of the rotating rod 503 passes through the top of the cleaning frame 502, and a gear 507 is fixedly connected to the top of the rotating rod 503. The gear 507 meshes with the toothed groove 506. When the cleaning frame 502 is driven by the drive shaft 501 to revolve, the gear 507 at the top of the rotating rod 503 meshes with the toothed groove 506 fixedly installed on one side of the inner wall of the filter cylinder 1. The gear 507 will be forced to rotate on its own axis on the revolving path by the toothed groove 506, thereby driving the entire rotating rod 503 and the spiral cleaning scraper 504 to rotate on their own axis while revolving. This transforms the single rotation drive into a compound motion combining revolution and rotation. This compound motion makes the cleaning scraper 504 form a spiral propulsion scraping path relative to the surface of the filter element 3, which greatly improves the scraping efficiency and cleanliness, and can more effectively transport the scraped impurities in a specific direction downwards.

[0044] The auxiliary vibration mechanism 7 includes a linkage block 701, a toothed groove 702, a connecting rod 703, a fixed cylinder 704, a top rod 705, a spring 706, and a top ball 707. The linkage block 701 is fixedly connected to the outer wall of the top center of the filter element 3. The outer wall of the linkage block 701 is surrounded by a toothed groove 702, and the teeth of the toothed groove 702 are inclined. The linkage block 701 is fixed to the top of the filter element 3, and the teeth of the toothed groove 702 on its outer wall are inclined. When the cleaning mechanism is working, the top ball 707 can move along the inclined toothed groove 702. The inclined toothed groove 702 is a key structure for converting rotational motion into periodic linear vibration or impact, providing a basis for generating a vibration effect.

[0045] A connecting rod 703 is fixedly connected to one side of the bottom outer wall of the cleaning rack 502. A fixed cylinder 704 is fixedly connected to one side of the connecting rod 703. A top rod 705 is embedded in the inner wall of the fixed cylinder 704. The top rod 705 and the fixed cylinder 704 are slidably connected. The connecting rod 703 at the bottom of the cleaning rack 502 drives the fixed cylinder 704 to rotate together with the cleaning rack 502. The top rod 705 inside the fixed cylinder 704 can slide relative to it.

[0046] A spring 706 is fixedly connected to one end of the push rod 705 near the fixed cylinder 704. The end of the spring 706 away from the push rod 705 is connected to the inner wall of the fixed cylinder 704. A top bead 707 is embedded in the end of the push rod 705 away from the spring 706. The top bead 707 is embedded in the tooth groove 702. When the fixed cylinder 704 moves with the connecting rod 703, the push rod 705, under the preload of the spring 706, presses the top bead 707 at its end tightly into the tooth groove 702. When the top ball 707 slides over the inclined teeth, it compresses the spring 706 and springs back instantly, generating a high-frequency, periodic micro-impact. This vibration is transmitted to the filter element 3 through the connecting rod 703 and the cleaning frame 502. The design of the spring 706 and the top ball 707 transforms the continuous rotational motion into efficient intermittent vibration or impact, which can effectively loosen stubborn impurities adhering to the filter element 3 and assist the cleaning of the scraper 504. The top ball 707 transforms sliding friction into rolling friction, reducing wear.

[0047] A differential pressure sensor 8 is installed on one side of the inlet 601 of the valve body, and a controller 9 is installed on one side of the multi-way valve 6. The differential pressure sensor 8 monitors the pressure difference of the inlet 601 of the valve body in real time. When the pressure difference increases to the set value, indicating that the filter element 3 is severely clogged, the differential pressure sensor 8 transmits a signal to the controller 9. The controller 9 then automatically issues a command to control the servo motor 505 and the three-way valve core 604 in the multi-way valve 6, etc., to start the backwashing program. This realizes the fully automatic intelligent operation of the filter without manual intervention. The system can automatically clean when the pressure difference reaches the set value at the optimal time, ensuring the stability of the filtration efficiency and avoiding energy waste or equipment damage caused by untimely cleaning.

[0048] The filter element 3 is connected to the sealing plate 2 by a snap-fit ​​connection, and the filter cylinder 1 is connected to the sealing plate 2 by a quick-opening flange structure. When the filter element 3 needs to be replaced, the connection between the filter cylinder 1 and the sealing plate 2 can be quickly opened through the quick-opening flange structure. Then, the old filter element 3 can be removed from the sealing plate 2 and the new filter element 3 can be installed through the simple snap-fit ​​connection structure. The snap-fit ​​connection and quick-opening flange structure greatly simplify the replacement of the filter element 3 and the internal maintenance process of the filter, making the maintenance work quick and easy, without the need for special tools, significantly reducing the time and labor costs of equipment maintenance, and improving the ease of use and maintainability of the equipment.

[0049] The implementation principle of this application embodiment is as follows: First, the fluid to be treated enters the filter cylinder 1 from the guide inlet 4, located outside the filter element 3. Under pressure, the fluid penetrates the filter element 3 from the outside to the inside, and impurities are trapped on the outer surface of the filter element 3. The cleaned fluid enters the interior of the filter element 3, collects, and flows out from the guide outlet 401 at the center of the sealing plate 2. When cleaning is required, the auxiliary cleaning mechanism 5 and the auxiliary vibration mechanism 7 are activated under the command of the control system and work together. The multi-way valve 6 switches the flow path to cooperate with the sewage discharge. By integrating the auxiliary cleaning mechanism 5 and the auxiliary vibration mechanism 7, efficient and automatic cleaning of the filter element 3 is achieved, thereby ensuring the continuity and efficiency of the production process. During normal filtration, the fluid enters the filter through the valve body inlet 601 and the guide inlet 4. During backwashing, the three-way valve core 604 actuates, changing the flow path so that the fluid entering from the valve body inlet 601 or the fluid inside the filter can flush the dirt collection tank 603 and carry the dirt out of the system. The cleaning fluid always flows out from the valve body outlet 602. Simultaneously with backwashing, the servo motor 505 starts, driving the drive shaft 501 to rotate. The drive shaft 501 drives the cleaning frame 502 to rotate inside the filter cylinder 1. The cleaning frame 502 drives the rotating rods 503 connected to its two sides via bearings to revolve together. The spiral cleaning scraper 504, fixedly connected to the outer wall of the rotating rod 503, revolves accordingly. Since its two sides abut against the inner wall of the filter cylinder 1 and the outer wall of the filter element 3 respectively, it scrapes off the surface-adhered impurities during the revolution. When the cleaning frame 502 is subjected to... When the drive shaft 501 revolves, the gear 507 at the top of the rotating rod 503 meshes with the toothed groove 506 fixedly installed on the inner wall of one side of the filter cylinder 1. The gear 507 is forced to rotate on its own axis by the toothed groove 506 on the revolution path, thereby driving the entire rotating rod 503 and the spiral cleaning scraper 504 to rotate on their own axis while revolving. This transforms the single rotation drive into a compound motion combining revolution and rotation. This compound motion causes the cleaning scraper 504 to form a spiral-propelling scraping path relative to the surface of the filter element 3, greatly improving the scraping efficiency and cleanliness, and more effectively conveying the scraped impurities downwards in a specific direction. The connecting rod 703 at the bottom of the cleaning frame 502 drives the fixed cylinder 704 to revolve together with the cleaning frame 502. The push rod 705 inside the fixed cylinder 704 can slide relative to the filter element. When the fixed cylinder 704 moves with the connecting rod 703, the push rod 705, under the preload of the spring 706, presses the top ball 707 at its end tightly into the toothed groove 702. When the top ball 707 slides over the inclined teeth, it compresses the spring 706 and springs back instantly, generating a high-frequency, periodic micro-impact. This vibration is transmitted to the filter element 3 through the connecting rod 703 and the cleaning frame 502. The design of the spring 706 and the top ball 707 transforms the continuous rotational motion into efficient intermittent vibration or impact, which can effectively loosen stubborn impurities adhering to the filter element 3 and assist in the cleaning of the scraper 504. The top ball 707 changes sliding friction into rolling friction, reducing wear. When the pressure difference increases to a set value, indicating that the filter element 3 is severely clogged,The differential pressure sensor 8 transmits a signal to the controller 9, which then automatically issues commands to control components such as the servo motor 505 and the three-way valve core 604 in the multi-way valve 6, initiating the backwashing program. This achieves fully automatic intelligent operation of the filter, requiring no manual intervention. The system automatically cleans when the differential pressure reaches the set value at the optimal time, ensuring stable filtration efficiency while avoiding energy waste or equipment damage caused by untimely cleaning.

[0050] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fully automatic backwash filter comprising a filter cartridge (1), characterized in that: The bottom end of the filter cartridge body (1) is connected with a sealing plate (2), the top center of the sealing plate (2) is connected with a filter core (3), one side of the sealing plate (2) is provided with a flow guide inlet (4), the center of the sealing plate (2) is provided with a flow guide outlet (401), the flow guide inlet (4) is arranged outside the filter core (3), the top of the filter cartridge body (1) is provided with an auxiliary cleaning mechanism (5), one side of the filter cartridge body (1) is provided with a multi-way valve (6), and the top of the filter core (3) is provided with an auxiliary vibration mechanism (7).

2. The fully automatic backwash filter according to claim 1, characterized in that: One side of the multi-way valve (6) is provided with a valve body liquid inlet (601), one side of the valve body liquid inlet (601) is provided with a valve body liquid outlet (602), the communication end of the valve body liquid inlet (601) is communicated with the flow guide inlet (4), the communication end of the valve body liquid outlet (602) is communicated with the flow guide outlet (401), and the bottom side of the multi-way valve (6) is communicated with a sewage collecting tank (603). The sewage collecting tank (603) is communicated with the valve body liquid inlet (601) through a three-way valve core (604), and one side of the valve body liquid outlet (602) is communicated with a liquid pump (605).

3. The fully automatic backwash filter according to claim 1, characterized in that: The auxiliary cleaning mechanism (5) comprises a driving shaft (501), a cleaning frame (502), a rotating rod (503), a cleaning scraper (504), a servo motor (505), a gear slot (506) and a gear (507). The top inner wall of the filter cartridge body (1) is connected with the driving shaft (501) through a sealing bearing, the bottom end of the driving shaft (501) is fixedly connected with the cleaning frame (502), the cleaning frame (502) is slidably connected with the filter cartridge body (1), the bottom ends of the two sides of the cleaning frame (502) are both connected with the rotating rod (503) through bearings, the rotating rod (503) is arranged on the two sides of the filter core (3), the outer wall of the rotating rod (503) is fixedly connected with the cleaning scraper (504), the cleaning scraper (504) is spiral-shaped, and the outer walls of the two sides of the cleaning scraper (504) are respectively in abutment with the inner wall of the filter cartridge body (1) and the outer wall of the filter core (3).

4. The fully automatic backwash filter according to claim 3, characterized in that: The top outer wall of the filter cartridge body (1) is fixedly connected with the servo motor (505), the output end of the servo motor (505) is connected with the driving shaft (501), the servo motor (505) drives the driving shaft (501) to rotate, the driving shaft (501) rotates to drive the cleaning frame (502) to rotate synchronously, and the cleaning frame (502) rotates to drive the rotating rod (503) and the cleaning scraper (504) to rotate synchronously.

5. The fully automatic backwash filter according to claim 4, characterized in that: The inner wall of one side of the filter cartridge body (1) is surrounded by the gear slot (506), the top of the rotating rod (503) penetrates through the top of the cleaning frame (502), and the top end of the rotating rod (503) is fixedly connected with the gear (507), and the gear (507) is engaged with the gear slot (506).

6. The fully automatic backwash filter according to claim 3, characterized in that: The auxiliary vibration mechanism (7) comprises a linkage block (701), a gear slot (702), a connecting rod (703), a fixed cylinder (704), a jacking rod (705), a spring (706) and a jacking bead (707), the outer wall of the top center of the filter element (3) is fixedly connected with the linkage block (701), the outer wall of the linkage block (701) is provided with the gear slot (702), and the gear of the gear slot (702) is inclined.

7. The fully automatic backwash filter according to claim 6, characterized in that: One side of the bottom of the cleaning frame (502) is fixedly connected with the connecting rod (703), one side of the connecting rod (703) is fixedly connected with the fixed cylinder (704), the inner wall of the fixed cylinder (704) is embedded with the jacking rod (705), and the jacking rod (705) and the fixed cylinder (704) are in sliding connection.

8. The fully automatic backwash filter according to claim 7, characterized in that: One end of the jacking rod (705) close to the fixed cylinder (704) is fixedly connected with the spring (706), one end of the spring (706) away from the jacking rod (705) is connected with the inner wall of the fixed cylinder (704), and the other end of the jacking rod (705) away from the spring (706) is embedded with the jacking bead (707), and the jacking bead (707) is embedded in the gear slot (702).

9. The fully automatic backwash filter according to claim 2, wherein: The inside of the valve body liquid inlet (601) is provided with a differential pressure sensor (8), and one side of the multi-way valve (6) is provided with a controller (9).

10. The fully automatic backwash filter according to claim 6, characterized in that: The filter element (3) and the sealing plate (2) are connected through snap connection, and the filter cylinder body (1) and the sealing plate (2) are connected through quick opening flange structure.

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