An anti-clogging external stress-type vortex flow meter and its usage method

Abstract

This invention discloses an anti-clogging external stress-type vortex flow meter and its usage method, comprising a flow meter body and circular filter boxes disposed on the left and right sides of the flow meter body. Connecting pipes are connected to opposite sides of the two circular filter boxes, and pads are fixedly connected to the bottom of the outer periphery of each of the two circular filter boxes. This invention relates to the field of vortex flow meter technology. This anti-clogging external stress-type vortex flow meter and its usage method, by setting circular filter boxes on both sides of the flow meter body, utilizes the cooperation of sealing rings and slots to ensure effective flow of the medium in the pipeline. A first filter screen is used to screen impurities in the medium. With the setting of a rotary drive component, the sealing ring can rotate, thereby replacing the unused first filter screen, avoiding clogging caused by prolonged use of a single first filter screen. The entire process is sealed, reducing manual labor while effectively ensuring the detection accuracy of the flow meter body.

Description

Technical Field

[0001] This invention relates to the field of vortex flow meter technology, specifically to an anti-clogging external stress-type vortex flow meter and its usage method. Background Technology

[0002] Vortex flow meters are volumetric flow meters designed and manufactured based on the Karman vortex street principle to measure the volumetric flow rate, standard volumetric flow rate, or mass flow rate of gases, steam, or liquids. They are mainly used for measuring the flow rate of fluids in industrial pipelines, such as gases, liquids, and steam. Their characteristics include low pressure loss, a wide measuring range, and high accuracy. When measuring volumetric flow rate under operating conditions, they are almost unaffected by parameters such as fluid density, pressure, temperature, and viscosity.

[0003] Vortex flow meters have many problems in use. For viscous liquids, liquids containing impurities, or liquids containing particles, the flow meter often becomes clogged due to the large amount of impurities, which causes the flow meter to become less accurate. In low-temperature environments, the liquid may even condense inside the flow meter due to the blockage, forcing the staff to frequently disassemble the flow meter during maintenance, thus reducing its service life.

[0004] As described in patent number CN216717481U, a vortex flow meter sensor with an anti-clogging structure uses two sets of filter tubes. When clogging occurs and impurities need to be cleaned, one filter tube is replaced while the other is kept in use. After reassembly, the other filter tube is replaced, and the previously assembled filter tube is kept in use. This achieves filtration without affecting the flow of the medium in the pipeline.

[0005] Based on the above information, it can be seen that the filter tube is replaced manually, requiring manual maintenance. When measuring the transport of media containing impurities, the single-use time of the filter tube is short, resulting in frequent manual maintenance and high labor intensity. In addition, frequent replacement of the filter tube cannot effectively guarantee the sealing effect of the pipeline, thus negatively affecting the measurement accuracy of the vortex flow meter. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an anti-clogging external stress-type vortex flow meter and its usage method. This solves the problem that conventional anti-clogging structure designs for vortex flow meters require manual maintenance, which is cumbersome and can negatively impact the measurement accuracy of the vortex flow meter.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an anti-clogging external stress-type vortex flow meter, comprising a flow meter body and circular filter boxes disposed on the left and right sides of the flow meter body. Each of the two circular filter boxes has a connecting pipe connected to its opposite side. A flange is fixedly connected to the end of the connecting pipe away from the circular filter box. A pad is fixedly connected to the bottom of each of the two circular filter boxes. A cleaning box is fixedly connected to the bottom of both pads. A power box is fixedly connected to the top of the cleaning box, located between the two circular filter boxes. A filling pipe is connected to the top of the power box, and a sealing cap is threaded onto the outer surface of the filling pipe. A rotary drive assembly is fixedly installed on the top of the power box. The two output ends of the rotary drive assembly pass through a circular filter box and extend into the interior of the circular filter box. A sealing ring is rotatably connected inside the circular filter box, and the sealing ring and the output ends of the rotary drive assembly are connected by a spline assembly. Several slots are evenly spaced on the outer circumference of the sealing ring, and a U-shaped collection frame is placed inside the slot. A first filter screen is fixedly connected inside the U-shaped collection frame. A cleaning drive component is fixedly installed inside the power box. The two output ends of the cleaning drive component pass through the power box and are connected to a cleaning tube array assembly adapted to the circular filter box.

[0008] By adopting the above technical solution, circular filter boxes are set on both sides of the flow meter body. The cooperation of sealing ring and slot ensures the effective flow of medium in the pipeline. The first filter screen is used to screen impurities in the medium. With the setting of the rotary drive component, the sealing ring can be rotated, thereby replacing the unused first filter screen. This avoids the blockage caused by the long-term use of a single first filter screen. The whole process is sealed, which reduces the amount of manual labor and effectively ensures the detection accuracy of the flow meter body.

[0009] The present invention is further configured such that: the circular filter box includes a box body and a box cover, and the box body and the box cover are fixedly connected by bolts; the opposite sides of the two box bodies are respectively connected to both ends of the flow meter body; and the opposite sides of the two box covers are respectively connected to one end of the two connecting pipes.

[0010] The invention is further configured such that: a through hole is provided at the top of the cleaning box and inside the power box; a second filter screen is fixedly connected between the top and bottom of the inner cavity of the cleaning box and on both sides of the through hole; the bottom of the circular filter box, the pad, and the top of the cleaning box are connected by an opening; a strainer basin is slidably connected inside the cleaning box and on the outer periphery of the opening; and sealing doors adapted to the strainer basin are hinged to both sides of the cleaning box.

[0011] By adopting the above technical solution and utilizing the combination of openings and a strainer basin, impurities on the first filter screen after use can fall into the strainer basin through the openings, providing convenient conditions for cleaning impurities on the first filter screen.

[0012] The present invention is further configured such that: the rotary drive assembly includes a mounting box, a drive motor is fixedly connected to the bottom of the inner cavity of the mounting box, the output shaft of the drive motor is fixedly connected to a first bevel gear through a coupling, drive shafts are rotatably connected to both the left and right sides of the mounting box, and a second bevel gear adapted to the first bevel gear is fixedly connected to one end of each of the two drive shafts facing each other, and the end of the drive shaft away from the mounting box passes through the circular filter box and extends into the interior of the circular filter box.

[0013] The present invention is further configured such that: the spline assembly includes a spline shaft, the right side of the sealing ring is provided with a spline groove adapted to the spline shaft, and one end of the spline shaft is fixedly connected to the end of the drive shaft away from the mounting box.

[0014] By adopting the above technical solution and utilizing the matching arrangement of the spline shaft and spline groove, while ensuring that the drive shaft drives the spline shaft to effectively rotate the sealing ring, convenient conditions are provided for the easy disassembly and assembly of the sealing ring.

[0015] The present invention is further configured such that: the cleaning drive component includes an isolation cover, a water pump is fixedly connected to the bottom of the inner cavity of the isolation cover, one end of the water pump inlet pipe passes through the isolation cover and the cleaning box in sequence and extends into the interior of the cleaning box, the top end of the water pump outlet pipe is connected to a horizontal pipe, and both the left and right ends of the horizontal pipe pass through the isolation cover and the power box in sequence and extend to the left and right sides of the power box respectively.

[0016] The present invention is further configured such that: the cleaning tube array assembly includes a hollow plate, and a plurality of conduits are evenly spaced and connected to the opposite sides of the two hollow plates, one end of the conduit penetrates through the circular filter box and extends into the interior of the circular filter box, and the left and right ends of the horizontal tube are respectively connected to the opposite sides of the two hollow plates.

[0017] By adopting the above technical solution and with the water pump installed, the water in the cleaning tank is transported to the horizontal pipe. The hollow plate and guide plate are used to rinse the first filter screen after use, thereby cleaning the first filter screen. With the cooperation of the opening and the strainer basin, impurities are effectively collected. At the same time, the second filter screen is used to circulate the clean water, effectively reducing water resource consumption.

[0018] The present invention is further configured such that the diameter of the connecting pipe is adapted to the size of the U-shaped collection frame.

[0019] The invention is further configured such that the bottom of the two box covers on opposite sides is hinged to a sealing replacement door adapted to the U-shaped collection frame.

[0020] By adopting the above technical solution and utilizing the sealed replacement door, the disassembly and assembly of the U-shaped collection frame are made convenient, thus eliminating the need to disassemble the entire circular filter box. This not only makes the device easy to use but also ensures a long service life.

[0021] This invention also discloses a method for using an anti-clogging external stress-type vortex flow meter, specifically including the following steps:

[0022] Step 1, Media Conveying: Connect the two connecting pipes to the external pipeline through flanges. The external medium enters a circular filter box through one connecting pipe, and after being filtered by the first filter screen in a U-shaped collection frame, it enters the flow meter body. Then it flows to the other circular filter box, and after being filtered by the first filter screen in one of the U-shaped collection frames, it is transported to the external pipeline through the other connecting pipe.

[0023] Step 2, Anti-blocking adjustment: After the U-shaped collection box in Step 1 has been used for a set time, start the drive motor. The drive motor drives the first bevel gear to rotate, and the first bevel gear drives the two second bevel gears to rotate the drive shaft. The drive shaft drives the sealing ring to rotate, and the U-shaped collection box that has been used for a set time is replaced with an adjacent U-shaped collection box. After it has been used for a set time, repeat the operation to replace the adjacent U-shaped collection box.

[0024] Step 3, Cleaning: When the U-shaped collection frame is rotated to the opening after use, start the water pump. The water pump's inlet pipe draws water from the cleaning tank, and the water is delivered to the horizontal pipe through the outlet pipe and then to the two hollow plates. Subsequently, the water is used to rinse the first filter screen plate in the U-shaped collection frame after use through the conduit.

[0025] Step 4, Water Circulation: The water that was rinsed in Step 3 after washing the first filter screen falls into the strainer basin through the opening. After the impurities are filtered in the strainer basin, the clean water is filtered again through the second filter screen and then pumped out for use.

[0026] This invention provides an anti-clogging external stress-type vortex flow meter and its usage method. It has the following beneficial effects:

[0027] (1) The anti-clogging external stress vortex flow meter and its usage method are achieved by setting circular filter boxes on both sides of the flow meter body, using the cooperation of sealing ring and slot to ensure the effective flow of medium in the pipeline, using the first filter screen to screen impurities in the medium, and under the setting of the rotary drive component, the sealing ring can be rotated, thereby replacing the unused first filter screen, avoiding the clogging caused by the long-term use of a single first filter screen, and the whole process is sealed, which reduces the amount of manual labor while effectively ensuring the detection accuracy of the flow meter body.

[0028] (2) The anti-clogging external stress vortex flow meter and its usage method, by utilizing the combination of the opening and the strainer basin, allows the impurities on the first filter screen plate after use to fall into the strainer basin through the opening, providing convenient conditions for cleaning the impurities on the first filter screen plate.

[0029] (3) The anti-clogging external stress vortex flow meter and its usage method, by utilizing the combination of spline shaft and spline groove, ensures that the drive shaft drives the spline shaft to make the sealing ring rotate effectively, while providing convenient conditions for the easy disassembly and assembly of the sealing ring.

[0030] (4) The anti-clogging external stress vortex flow meter and its usage method, by cooperating with the water pump, the water in the cleaning tank is transported to the horizontal pipe by the water pump. The first filter screen is rinsed after use by the hollow plate and guide plate, thereby cleaning the first filter screen. With the cooperation of the opening and the strainer basin, impurities are effectively collected. At the same time, the second filter screen is used to realize the circulation of clean water, effectively reducing the loss of water resources.

[0031] (5) The anti-clogging external stress vortex flow meter and its usage method provide convenient conditions for the disassembly and assembly of the U-shaped collection frame by utilizing the setting of the sealed replacement door, so that the circular filter box does not need to be completely disassembled. While being convenient to use, it also ensures the long service life of the device. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0034] Figure 3 This is a schematic diagram showing the connection of the pad, cleaning box, sealing ring, and box structure of the present invention.

[0035] Figure 4 This is a schematic diagram of the sealing ring structure of the present invention;

[0036] Figure 5This is a schematic diagram of the structure of the clean tube array assembly of the present invention;

[0037] Figure 6 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A;

[0038] Figure 7 This is a schematic diagram showing the connection of the drive shaft, the second bevel gear, and the splined shaft structure of the present invention;

[0039] Figure 8 This is a schematic diagram showing the connection between the U-shaped collection frame and the first filter screen of the present invention.

[0040] In the diagram, 1. Flow meter body; 2. Circular filter box; 3. Connecting pipe; 4. Pad; 5. Cleaning box; 6. Power box; 7. Rotary drive assembly; 8. Sealing ring; 9. Spline assembly; 10. Slot; 11. U-shaped collection frame; 12. First filter screen; 13. Cleaning drive component; 14. Cleaning tube array assembly; 15. Box body; 16. Box cover; 17. Through hole; 18. Second filter screen; 19. Opening; 20. Strainer basin; 21. Mounting box; 22. Drive motor; 23. First bevel gear; 24. Drive shaft; 25. Second bevel gear; 26. Spline shaft; 27. Spline groove; 28. Isolation cover; 29. ​​Water pump; 30. Horizontal pipe; 31. Hollow plate; 32. Conduit; 33. Sealing replacement door. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figure 1-8 The present invention provides the following two technical solutions:

[0043] Example 1

[0044] An anti-clogging external stress-type vortex flow meter includes a flow meter body 1 and circular filter boxes 2 disposed on the left and right sides of the flow meter body 1. Connecting pipes 3 are connected to opposite sides of the two circular filter boxes 2. Pads 4 are fixedly connected to the bottom of the outer periphery of each of the two circular filter boxes 2, with the pads 4 conforming to the outer arc surface of the circular filter box 2. A cleaning box 5 is fixedly connected to the bottom of both pads 4, used to store impurities and clean water. A power box 6 is fixedly connected to the top of the cleaning box 5, located between the two circular filter boxes 2. The power box 6 and the cleaning box 5 are connected through a through hole 17. A rotary drive assembly 7 is fixedly installed on the top of the power box 6. The two output ends of the rotary drive assembly 7 pass through one of the circular filter boxes 2 and extend into the interior of the circular filter box 2. A sealing ring 8 is rotatably connected inside the circular filter box 2, and the sealing ring 8 is connected to the output end of the rotary drive assembly 7 through a spline assembly 9, which is used to realize the rotary drive assembly 7. The sealing ring 8 is rotated effectively. Several slots 10 are evenly spaced on the outer circumference of the sealing ring 8, and a U-shaped collection frame 11 is placed inside each slot 10. A first filter screen 12 is fixedly connected inside the U-shaped collection frame 11. A cleaning drive component 13 is fixedly installed inside the power box 6. Both output ends of the cleaning drive component 13 pass through the power box 6 and are connected to a cleaning tube array assembly 14 adapted to the circular filter box 2. To further explain, circular filter boxes 2 are set on both sides of the flow meter body 1. The cooperation of the sealing ring 8 and the slots 10 ensures the effective flow of the medium in the pipeline. The first filter screen 12 filters impurities in the medium. Under the setting of the rotation drive assembly 7, the sealing ring 8 can rotate, thereby replacing the unused first filter screen 12. This avoids clogging caused by prolonged use of a single first filter screen 12. The entire process is sealed, reducing manual labor while effectively ensuring the detection accuracy of the flow meter body 1.

[0045] Example 2

[0046] This embodiment, as an improvement on the previous embodiment, provides an anti-clogging external stress-type vortex flow meter, including a flow meter body 1 and circular filter boxes 2 disposed on the left and right sides of the flow meter body 1. Each of the two circular filter boxes 2 has a connecting pipe 3 connected to its opposite side, as shown in the attached figure. Figure 1 As shown, in order to achieve effective disassembly of the circular filter box 2, the circular filter box 2 includes a box body 15 and a box cover 16, and the box body 15 and the box cover 16 are fixedly connected by bolts. The opposite sides of the two box bodies 15 are respectively connected to the two ends of the flow meter body 1, and the opposite sides of the two box covers 16 are respectively connected to the opposite ends of the two connecting pipes 3.

[0047] As a preferred embodiment, pads 4 are fixedly connected to the bottom of the outer periphery of both circular filter boxes 2, and cleaning boxes 5 are fixedly connected to the bottom of the two pads 4. In order to ensure that impurities in the circular filter boxes 2 are effectively transported to the cleaning boxes 5, a through hole 17 is provided on the top of the cleaning box 5 and inside the power box 6. A second filter screen 18 is fixedly connected between the top and bottom of the inner cavity of the cleaning box 5 and on both sides of the through hole 17. The bottom of the circular filter box 2, the pads 4 and the top of the cleaning box 5 are connected by openings 19.

[0048] In order to ensure the effective collection of impurities in the circular filter box 2, a strainer basin 20 is slidably connected inside the cleaning box 5 and on the outer periphery of the opening 19.

[0049] To ensure effective replacement of the mesh tray 20, please refer to the attached document. Figure 1 As shown, both the left and right sides of the cleaning box 5 are hinged with sealing doors that are compatible with the strainer basin 20.

[0050] As a preferred embodiment, a power box 6 is fixedly connected to the top of the cleaning box 5 and located between the two circular filter boxes 2. A rotary drive assembly 7 is fixedly installed on the top of the power box 6. The two output ends of the rotary drive assembly 7 pass through one of the circular filter boxes 2 and extend into the interior of the circular filter box 2, as shown in the attached diagram. Figure 2 As shown, the rotary drive assembly 7 includes a mounting box 21. A drive motor 22 is fixedly connected to the bottom of the inner cavity of the mounting box 21. The drive motor 22 is a stepper motor, electrically connected to an external power source, and controlled by a control switch. The output shaft of the drive motor 22 is fixedly connected to a first bevel gear 23 via a coupling. Drive shafts 24 are rotatably connected to both the left and right sides of the mounting box 21. A second bevel gear 25 that matches the first bevel gear 23 is fixedly connected to the opposite end of each of the two drive shafts 24. The end of the drive shaft 24 away from the mounting box 21 passes through the circular filter box 2 and extends into the interior of the circular filter box 2.

[0051] To achieve effective anti-clogging filtration of the medium transported in the pipeline, a sealing ring 8 is rotatably connected inside the circular filter box 2. Several evenly spaced slots 10 are formed on the outer circumference of the sealing ring 8, and a U-shaped collection frame 11 is placed inside each slot 10. The diameter of the connecting pipe 3 is matched to the size of the U-shaped collection frame 11. A first filter screen 12 is fixedly connected inside the U-shaped collection frame 11, as shown in the attached figure. Figure 2 and attached Figure 4 As shown, a limiting strip is fixedly connected to the outer periphery of the U-shaped collection frame 11, and a slot adapted to the limiting strip is provided inside the slot 10 to ensure an effective connection between the U-shaped collection frame 11 and the sealing ring 8.

[0052] Furthermore, in order to achieve the boundary assembly and disassembly of the U-shaped collection frame 11 without disassembling the circular filter box 2, the bottom of the two box covers 16 on opposite sides are hinged to a sealing replacement door 33 that is compatible with the U-shaped collection frame 11.

[0053] As a preferred embodiment, in order to ensure that the sealing ring 8 can be easily removed and installed from the housing 15, the sealing ring 8 and the output end of the rotary drive assembly 7 are connected by a spline assembly 9. As detailed in the description, the spline assembly 9 includes a spline shaft 26, and a spline groove 27 adapted to the spline shaft 26 is provided on the right side of the sealing ring 8. One end of the spline shaft 26 is fixedly connected to the end of the drive shaft 24 away from the mounting housing 21.

[0054] As a preferred embodiment, to facilitate convenient cleaning of the first filter screen 12, a cleaning drive component 13 is fixedly installed inside the power box 6, as shown in the attached diagram. Figure 2 As shown, the cleaning drive unit 13 includes an isolation cover 28. A water pump 29 is fixedly connected to the bottom of the inner cavity of the isolation cover 28. The water pump 29 is electrically connected to an external power source and is controlled by a control switch. One end of the water inlet pipe of the water pump 29 passes through the isolation cover 28 and the cleaning box 5 in sequence and extends into the interior of the cleaning box 5. The top end of the water outlet pipe of the water pump 29 is connected to a horizontal pipe 30. Both ends of the horizontal pipe 30 pass through the isolation cover 28 and the power box 6 in sequence and extend to the left and right sides of the power box 6 respectively.

[0055] Furthermore, both output ends of the cleaning drive unit 13 pass through the power box 6 and are connected to a cleaning tube array assembly 14 adapted to the circular filter box 2, as shown in the attached diagram. Figure 5 As shown, the cleaning tube array assembly 14 includes a hollow plate 31. A number of conduits 32 are evenly spaced on opposite sides of the two hollow plates 31. One end of the conduit 32 passes through the circular filter box 2 and extends into the interior of the circular filter box 2. The left and right ends of the horizontal tube 30 are respectively connected to the opposite sides of the two hollow plates 31.

[0056] The advantage of Embodiment 2 over Embodiment 1 is that, by utilizing the combined arrangement of the opening 19 and the strainer basin 20, impurities on the first filter screen 12 after use can fall into the strainer basin 20 through the opening 19, providing convenient conditions for cleaning the impurities on the first filter screen 12. With the addition of the water pump 29, water from the cleaning tank 5 is transported to the horizontal pipe 30. Through the arrangement of the hollow plate 31 and the guide plate 32, the first filter screen 12 after use is rinsed, thereby achieving the cleaning of the first filter screen 12. With the combination of the opening 19 and the strainer basin 20, impurities are effectively collected. At the same time, the arrangement of the second filter screen 18 enables the circulation of clean water, effectively reducing water resource consumption.

[0057] The above-mentioned method for using an external stress-type vortex flow meter with anti-clogging features specifically includes the following steps:

[0058] Step 1, Media Conveying: Connect the two connecting pipes 3 to the external pipelines through flanges. The external medium enters a circular filter box 2 through one connecting pipe 3, and after being filtered by the first filter screen 12 in a U-shaped collection frame 11, it enters the flow meter body 1, and then flows to the other circular filter box 2. After being filtered by the first filter screen 12 in one of the U-shaped collection frames 11, it is transported to the external pipeline through the other connecting pipe 3.

[0059] Step 2, Anti-blocking adjustment: After the U-shaped collection box 11 in Step 1 has been used for a set time, start the drive motor 22. The drive motor 22 drives the first bevel gear 23 to rotate. The first bevel gear 23 drives the two second bevel gears 25 to rotate the drive shaft 24. The drive shaft 24 drives the sealing ring 8 to rotate. Replace the U-shaped collection box 11 after the set time of use with an adjacent U-shaped collection box 11. After the set time of use, repeat the operation to replace the adjacent U-shaped collection box 11.

[0060] Step 3, Cleaning: When the U-shaped collection frame 11 is rotated to the opening 19 after use, the water pump 29 is started. The water inlet pipe of the water pump 29 draws water from the cleaning tank 5. The water is delivered to the horizontal pipe 30 through the outlet pipe and then to the two hollow plates 31. Subsequently, the water is rinsed through the conduit 32 to rinse the first filter screen plate 12 in the U-shaped collection frame 11 after use.

[0061] Step 4, Water Circulation: The water that was rinsed in Step 3 after rinsing the first filter screen 12 falls into the strainer basin 20 through the opening 19. After the impurities are filtered in the strainer basin 20, the clean water is filtered again through the second filter screen 18 and then pumped out by the water pump 29.

[0062] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-clogging external stress-type vortex flow meter, comprising a flow meter body (1) and circular filter boxes (2) disposed on the left and right sides of the flow meter body (1), characterized in that: Both circular filter boxes (2) are connected to a connecting pipe (3) on opposite sides. A pad (4) is fixedly connected to the bottom of the outer periphery of each of the two circular filter boxes (2). A cleaning box (5) is fixedly connected to the bottom of both pads (4). A power box (6) is fixedly connected to the top of the cleaning box (5) and between the two circular filter boxes (2). A rotary drive assembly (7) is fixedly installed on the top of the power box (6). The two output ends of the rotary drive assembly (7) pass through one of the circular filter boxes (2) and extend into the interior of the circular filter box (2). A sealing ring (8) is rotatably connected, and the sealing ring (8) and the output end of the rotary drive assembly (7) are connected by a spline assembly (9). The outer circumference of the sealing ring (8) is evenly provided with several slots (10), and a U-shaped collection frame (11) is placed inside the slots (10). A first filter screen plate (12) is fixedly connected inside the U-shaped collection frame (11). A cleaning drive component (13) is fixedly installed inside the power box (6). Both output ends of the cleaning drive component (13) pass through the power box (6) and are connected to a cleaning tube array assembly (14) that is compatible with the circular filter box (2). The top of the cleaning box (5) and inside the power box (6) is provided with a through hole (17). A second filter plate (18) is fixedly connected between the top and bottom of the inner cavity of the cleaning box (5) and on both sides of the through hole (17). The bottom of the circular filter box (2), the pad (4) and the top of the cleaning box (5) are connected by an opening (19). A strainer basin (20) is slidably connected inside the cleaning box (5) and on the outer periphery of the opening (19). The rotary drive assembly (7) includes a mounting box (21). A drive motor (22) is fixedly connected to the bottom of the inner cavity of the mounting box (21). The output shaft of the drive motor (22) is fixedly connected to a first bevel gear (23) via a coupling. Drive shafts (24) are rotatably connected to both the left and right sides of the mounting box (21). A second bevel gear (25) that matches the first bevel gear (23) is fixedly connected to the opposite end of each of the two drive shafts (24). The end of the drive shaft (24) away from the mounting box (21) passes through the circular filter box (2) and extends into the interior of the circular filter box (2). The cleaning drive unit (13) includes an isolation cover (28), and a water pump (29) is fixedly connected to the bottom of the inner cavity of the isolation cover (28). One end of the water inlet pipe of the water pump (29) passes through the isolation cover (28) and the cleaning box (5) in sequence and extends into the interior of the cleaning box (5). The top end of the water outlet pipe of the water pump (29) is connected to a horizontal pipe (30), and the left and right ends of the horizontal pipe (30) pass through the isolation cover (28) and the power box (6) in sequence and extend to the left and right sides of the power box (6) respectively. The cleaning tube array assembly (14) includes a hollow plate (31). A number of conduits (32) are evenly spaced on opposite sides of the two hollow plates (31). One end of the conduit (32) passes through the circular filter box (2) and extends into the interior of the circular filter box (2). The left and right ends of the horizontal tube (30) are respectively connected to the opposite sides of the two hollow plates (31).

2. The anti-clogging external stress-type vortex flow meter according to claim 1, characterized in that: The circular filter box (2) includes a box body (15) and a box cover (16), and the box body (15) and the box cover (16) are fixedly connected by bolts. The opposite sides of the two boxes (15) are respectively connected to the two ends of the flow meter body (1), and the opposite sides of the two boxes (16) are respectively connected to the opposite ends of the two connecting pipes (3).

3. The anti-clogging external stress-type vortex flow meter according to claim 2, characterized in that: The spline assembly (9) includes a spline shaft (26), and a spline groove (27) adapted to the spline shaft (26) is provided on the right side of the sealing ring (8). One end of the spline shaft (26) is fixedly connected to the end of the drive shaft (24) away from the mounting box (21).

4. The anti-clogging external stress-type vortex flow meter according to claim 1, characterized in that: The diameter of the connecting pipe (3) is adapted to the size of the U-shaped collection frame (11).

5. The anti-clogging external stress-type vortex flow meter according to claim 2, characterized in that: The bottom of the two box covers (16) on opposite sides are hinged to a sealing replacement door (33) that is compatible with the U-shaped collection frame (11).

6. The method of using an anti-clogging external stress-type vortex flow meter according to claim 3, characterized in that: Specifically, the following steps are included: Step 1, Media delivery: Connect the two connecting pipes (3) to the external pipelines through flanges respectively. The external medium enters a circular filter box (2) through one connecting pipe (3), and after being filtered by the first filter screen (12) in a U-shaped collection frame (11), it enters the flow meter body (1) and then flows to another circular filter box (2). After being filtered by the first filter screen (12) in one of the U-shaped collection frames (11), it is delivered to the external pipeline through the other connecting pipe (3). Step 2, Anti-blocking adjustment: After the U-shaped collection box (11) in Step 1 has been used for a set time, start the drive motor (22). The drive motor (22) drives the first bevel gear (23) to rotate. The first bevel gear (23) drives the two second bevel gears (25) to rotate the drive shaft (24). The drive shaft (24) drives the sealing ring (8) to rotate. Replace the U-shaped collection box (11) after the set time of use with an adjacent U-shaped collection box (11). After the set time of use, repeat the operation to replace the adjacent U-shaped collection box (11). Step 3, Cleaning: When the U-shaped collection frame (11) is rotated to the opening (19) after use, the water pump (29) is started. The water inlet pipe of the water pump (29) draws water from the cleaning tank (5), and the water is delivered to the horizontal pipe (30) through the water outlet pipe and delivered to the two hollow plates (31) respectively. Then the water is rinsed through the conduit (32) to rinse the first filter screen plate (12) in the U-shaped collection frame (11) after use. Step 4, Water Circulation: The water that was rinsed in Step 3 after rinsing the first filter screen (12) falls into the strainer basin (20) through the opening (19). After the impurities are filtered in the strainer basin (20), the clean water is filtered again through the second filter screen (18) and then pumped out by the water pump (29).

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