Filter with leakage monitoring and alarm function and monitoring method thereof

Abstract

The present invention belongs to the technical field of filters, and discloses a filter with a leakage monitoring and alarm function and a monitoring method thereof, comprising a filter assembly, wherein the filter assembly comprises a metal shell, the top of the metal shell is fixedly connected to a liquid inlet, a filter element is fixedly mounted on the outer side of the metal shell, an extension frame is fixedly mounted on one side of the outer side of the metal shell, and a lateral guide rail is mounted in the middle of the extension frame. The present invention utilizes the oil flow rate that increases in a short period of time during leakage, and through the change in flow rate, cooperates with the action of the alarm assembly, and an external Hall current sensor, it can convert the pressure change into the displacement of the permanent magnet, and convert the displacement of the permanent magnet into the current change, thereby realizing a rapid monitoring process. The entire monitoring process responds quickly, and at the same time, the rotation of the movable ring can also quickly capture the leakage point, realize rapid monitoring, thereby reducing filtration failure and improving service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of filters, and in particular relates to a filter with a leakage monitoring and alarm function and a monitoring method thereof. Background Art

[0002] Filters are key industrial equipment used to handle impurities in liquids or gases. Designed to meet the demands of high-flow, high-precision filtration, they are widely used in industries such as water treatment, energy, and chemicals. Filters are primarily categorized by volume into large and small filters. Large filters primarily rely on physical interception and material adsorption to separate impurities. They are typically filled with multiple layers of filter media, such as activated carbon, quartz sand, and ceramsite. When water or air flows through, pollutants such as suspended particles, organic matter, and heavy metals are trapped in the pores of the filter media, while the clean media flows out through the filter layers.

[0003] When the filter is working, it mainly achieves filtration through the filter medium. During normal operation, the filtration flow rate is basically the same at the filter cutoff, and the filtration flow rate is in a constant state. However, once the filter medium leaks, it will cause an instantaneous flow increase, causing damage to the device. At the same time, some impurities will overflow and cause filtration failure. Therefore, how to maintain leakage monitoring is crucial.

[0004] When a filter is actually used, if a small leak occurs, the small amount of leakage will not have a major impact on the entire system or device. However, once a larger-scale leak occurs, the instantaneous flow rate will increase instantly, causing a surge in pressure in the entire device. The devices currently used do not monitor larger leaks and are therefore less safe. Summary of the Invention

[0005] The object of the present invention is to provide a filter with a leakage monitoring and alarm function and a monitoring method thereof, so as to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a filter with a leakage monitoring and alarm function, comprising a filter assembly, wherein the filter assembly comprises a metal shell, the top of the metal shell is fixedly connected to a liquid inlet, a filter element is fixedly installed on the outer side of the metal shell, an extension frame is fixedly installed on one side of the outer side of the metal shell, a lateral guide rail is installed in the middle of the extension frame, a power assembly is movably sleeved on the inner side of the lateral guide rail, a movable ring is movably sleeved on the outer side of the filter element, a driven gear ring is fixedly installed on the bottom end of the movable ring, the driven gear ring is meshed with the power assembly, the outer side of the movable ring is movably connected to the power assembly, the movable ring rotates relative to the power assembly, one side of the movable ring is fixedly connected to an alarm assembly, an adjusting screw is movably installed on the inner side of the lateral guide rail, and the adjusting screw is threadedly connected to the power assembly.

[0007] Before use, the liquid inlet must be connected to the filter port of the device, and the filter element must be ensured to be free of blockage. During normal filtration, the oil can enter the filter element through the liquid inlet and be filtered through the filter element. The filtered oil can be discharged through the outer side of the filter element.

[0008] At the same time, when conducting leakage monitoring, the adjusting screw can be manually turned according to the position to be monitored, driving the power component as a whole to move up and down relative to the lateral guide rail, and synchronously driving the movable ring to move up and down until the movable ring is located on the outer surface of the position to be monitored at the filter element, thereby completing the adjustment of the monitoring position, and the bottom end of the adjusting screw can be connected to the external motor, and the external motor can be used to drive the adjusting screw to rotate in real time to complete the real-time adjustment of the movable ring position.

[0009] As a further technical solution of the present invention, the alarm component includes an adjusting tube, the bottom end of the adjusting tube is fixedly connected to a liquid inlet pipe, the bottom end of the liquid inlet pipe is connected to the top of the movable ring, the internal movable sleeve of the adjusting tube is connected to a piston plate, and the top end of the piston plate is fixedly installed with a piston rod located inside the adjusting tube.

[0010] As a further technical solution of the present invention, an alarm tube is fixedly installed on the top of the regulating tube, and the top of the piston rod passes through the top of the regulating tube and the bottom of the alarm tube in sequence and is fixedly connected to a permanent magnet located inside the piston rod.

[0011] As a further technical solution of the present invention, the outer surface of the piston rod is movably sleeved with a limit spring, the upper and lower ends of the limit spring are respectively connected to the top of the inner cavity of the regulating tube and the bottom end of the piston plate, and a return pipe is fixedly connected to the outer surface of the regulating tube near the top, and the other end of the return pipe is connected to the outer surface of the movable ring.

[0012] As a further technical solution of the present invention, a copper coil is fixedly installed near the top of the inner cavity of the alarm tube, a touch switch is fixedly installed at the top of the inner cavity of the alarm tube, an alarm is fixedly installed in the middle of the top of the alarm tube, the output end of the touch switch is connected to the input end of the alarm, and the output end of the copper coil is connected to an external Hall current sensor.

[0013] When a slight leak occurs in the filter element, the flow entering the movable ring will be greater than the constant flow, and part of the oil will enter the liquid inlet pipe through the top of the movable ring and the inside of the regulating pipe at the same time, exerting an upward thrust on the piston plate. At this time, the piston plate and the piston rod will move upward accordingly, and the limit spring can be compressed, driving the permanent magnet to move upward.

[0014] As a further technical solution of the present invention, when the limit spring is in the extreme compression state, the piston plate is at the highest point position, and the piston plate is located above the output end of the return pipe, the permanent magnet is in contact with the touch switch, and a one-way valve is installed inside the liquid inlet pipe and the return pipe, and the directions of the valve are inward conduction and outward blockage and outward conduction and inward blockage respectively.

[0015] When the leakage point is too large, the instantaneous flow rate will increase significantly, and the flow rate entering the regulating tube will also increase significantly. At this time, the limit spring can be compressed to the limit position, and the permanent magnet rises to the highest point until it contacts the touch switch. At this time, the power supply of the alarm is turned on, and the alarm will sound to indicate a large-scale leakage.

[0016] By further utilizing the changes in oil during leakage, that is, taking advantage of the sudden change in pressure during large-scale leakage, the upward displacement of the permanent magnet is achieved, and its extreme displacement position is used to trigger the touch switch. The entire process can be completed automatically, and large-scale leakage can be monitored in the first time, significantly improving safety and reducing losses.

[0017] At the same time, when the pressure at the leakage point decreases or the leakage point is dealt with, part of the oil can flow back through the reflux pipe and re-enter the interior of the movable ring. At the same time, the limit spring can automatically reset, driving the piston plate to automatically reset. At this time, the permanent magnet is no longer located inside the copper coil, that is, it no longer cuts its magnetic field, and the device is reset until the leakage point is detected again.

[0018] By further utilizing the oil pressure, that is, when the device restores normal flow, the oil flow is in a constant state, and with the action of the alarm component, the alarm component can be automatically reset. The entire process can be completed automatically, and the continuous monitoring process can be maintained without the need for maintenance operations, which can achieve all-weather monitoring of the device and improve monitoring efficiency.

[0019] As a further technical solution of the present invention, the power assembly includes a mounting frame, an extension block is fixedly installed on one side of the mounting frame, the extension block is movably connected to the lateral guide rail, the extension block moves up and down relative to the lateral guide rail, and the middle part of the extension block is threadedly connected to the adjusting screw.

[0020] As a further technical solution of the present invention, a main motor is fixedly installed on the bottom end of the mounting frame, a driving gear is fixedly installed on the output shaft of the main motor, the driving gear is meshed with the driven gear ring, a synchronous plate is movably sleeved on the output shaft of the main motor, the other end of the synchronous plate is movably connected to the movable ring, and the movable ring rotates relative to the synchronous plate.

[0021] When monitoring the leakage on the outer side of the filter element, the main motor can be started to drive the driving gear at the bottom to rotate. At this time, the driven gear ring on the side of the driving gear rotates synchronously, and drives the movable ring at the top to rotate relative to the filter element. At this time, the movable ring can rotate around the monitoring position until a leak occurs at a point on the monitoring position, and the oil flow into the movable ring increases accordingly.

[0022] When the oil flow increases, that is, when the permanent magnet moves upward, the permanent magnet extends into the interior of the copper coil and cuts the magnetic field inside the copper coil. The copper coil then generates an induced current and transmits it to the external Hall current sensor. The sensor then operates, indicating that a leak has occurred at the monitoring location, and the monitoring process is completed.

[0023] By utilizing the increase in oil flow in a short period of time during leakage, through the change in flow, in conjunction with the action of the alarm component and the external Hall current sensor, the pressure change can be converted into the displacement of the permanent magnet, and the displacement of the permanent magnet can be converted into current change, thereby realizing a rapid monitoring process. The entire monitoring process responds quickly. At the same time, the rotation of the movable ring can also quickly capture the leakage point, realize rapid monitoring, thereby reducing filtration failure and increasing service life.

[0024] A filter monitoring method with a leakage monitoring and alarm function comprises the following steps:

[0025] S1: Before use, connect the liquid inlet to the filter port. During normal use, the oil enters the filter element through the liquid inlet and is filtered by the filter element. At the same time, before monitoring, the power assembly and the movable ring are lowered as a whole by rotating the adjusting screw until they are adjusted to the position to be monitored.

[0026] S2: During monitoring, the extended block is opened to drive the active gear to rotate. At this time, the driven gear ring rotates accordingly, and synchronously drives the movable ring to rotate relative to the filter element. If the filter element at the monitoring position leaks, oil with a flow rate greater than the normal flow rate will enter the interior of the movable ring;

[0027] S3: At the same time, liquid enters the regulating tube through the liquid inlet pipe and applies pressure to the piston plate. At this time, the limit spring can be compressed, driving the piston plate and piston rod upward. At the same time, the permanent magnet moves upward until it enters the copper coil, cutting the magnetic field of the copper coil and generating an induced current. The external Hall current sensor then detects the current, indicating that a leakage has occurred.

[0028] S4: If the leakage is too large, the instantaneous flow entering the regulating tube will increase significantly. At this time, the limit spring will be compressed to the limit position, and the permanent magnet will rise to the highest point. At this time, the permanent magnet can contact the touch switch, and the power of the alarm will be turned on, completing the alarm. When the flow at the leakage point decreases, the oil can complete the return flow through the return pipe, and the alarm component will automatically reset.

[0029] The beneficial effects of the present invention are as follows:

[0030] (1) The present invention utilizes the oil flow rate that increases in a short period of time during leakage. Through the change of flow rate, in conjunction with the function of the alarm component and the external Hall current sensor, the pressure change can be converted into the displacement of the permanent magnet, and the displacement of the permanent magnet can be converted into the current change, thereby realizing a rapid monitoring process. The entire monitoring process responds quickly. At the same time, the rotation of the movable ring can also quickly capture the leakage point, realize rapid monitoring, thereby reducing filtration failure and improving service life.

[0031] (2) The present invention further utilizes the changes in oil during leakage, that is, it utilizes the sudden change in pressure during large-scale leakage to achieve the upward displacement of the permanent magnet, and utilizes its extreme displacement position to trigger the touch switch. The entire process can be completed automatically, and large-scale leakage can be monitored in the first time, which significantly improves safety and reduces losses.

[0032] (3) The present invention further utilizes the pressure of the oil. That is, when the device returns to normal flow, the oil flow is in a constant state. In conjunction with the function of the alarm component, the alarm component can be automatically reset. The entire process can be completed automatically and the continuous monitoring process can be maintained without the need for maintenance operations. All-weather monitoring of the device can be achieved, thereby improving monitoring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is an exploded schematic diagram of the lateral guide rail, power assembly, and adjustment screw structure of the present invention;

[0035] Figure 3 Schematic diagram of the coordination of the movable ring and the driven gear ring structure of the present invention;

[0036] Figure 4 It is a cross-sectional schematic diagram of the internal structure of the movable ring of the present invention;

[0037] Figure 5 is a schematic cross-sectional view of the internal structure of the alarm assembly of the present invention;

[0038] Figure 6 for Figure 5 A magnified schematic diagram of the structure at center A;

[0039] Figure 7 It is a separate cross-sectional schematic diagram of the filter assembly structure of the present invention.

[0040] In the figure: 1. Filter assembly; 101. Metal shell; 102. Liquid inlet; 103. Filter element; 2. Extension frame; 3. Lateral guide rail; 4. Power assembly; 401. Mounting frame; 402. Extension block; 403. Main motor; 404. Synchronous plate; 405. Driving gear; 5. Adjusting screw; 6. Movable ring; 7. Driven gear ring; 8. Alarm assembly; 801. Adjusting tube; 802. Liquid inlet pipe; 803. Piston plate; 804. Piston rod; 805. Limit spring; 806. Return pipe; 807. Alarm tube; 808. Copper coil; 809. Permanent magnet; 8010. Touch switch; 8011. Alarm. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] like Figures 1 to 7 As shown, in an embodiment of the present invention, a filter with a leakage monitoring and alarm function includes a filter assembly 1, which includes a metal shell 101. The top of the metal shell 101 is fixedly connected to a liquid inlet 102, and a filter element 103 is fixedly installed on the outer side of the metal shell 101. An extension frame 2 is fixedly installed on one side of the outer side of the metal shell 101, and a lateral guide rail 3 is installed in the middle of the extension frame 2. The inner movability of the lateral guide rail 3 is connected to a power assembly 4, and the outer side of the filter element 103 is movably connected to a movable ring 6. The bottom end of the movable ring 6 is fixedly installed with a driven gear ring 7, which is meshed with the power assembly 4, and the outer side of the movable ring 6 is movably connected to the power assembly 4. The movable ring 6 rotates relative to the power assembly 4, and one side of the movable ring 6 is fixedly connected to an alarm assembly 8. An adjusting screw rod 5 is movably installed inside the lateral guide rail 3, and the adjusting screw rod 5 is threadedly connected to the power assembly 4.

[0043] Before use, the liquid inlet 102 must be connected to the filter port of the device, and the filter element 103 must be unblocked. During normal filtration, the oil can enter the interior of the filter element 103 through the liquid inlet 102 and be filtered by the filter element 103. The filtered oil can be discharged through the outer surface of the filter element 103.

[0044] At the same time, when conducting leakage monitoring, the adjusting screw 5 can be manually turned according to the position to be monitored, driving the power component 4 as a whole to move up and down relative to the lateral guide rail 3, and synchronously driving the movable ring 6 to move up and down until the movable ring 6 is located on the outer surface of the position to be monitored at the filter element 103, thereby completing the adjustment of the monitoring position, and the bottom end of the adjusting screw 5 can be connected to the external motor, and the adjusting screw 5 can be driven by the external motor to rotate in real time to complete the real-time adjustment of the position of the movable ring 6.

[0045] like Figure 3 and Figure 5 as well as Figure 6 As shown, the alarm component 8 includes a regulating tube 801, the bottom end of the regulating tube 801 is fixedly connected to the liquid inlet tube 802, the bottom end of the liquid inlet tube 802 is connected to the top of the movable ring 6, the inner part of the regulating tube 801 is movably sleeved with a piston plate 803, the top of the piston plate 803 is fixedly installed with a piston rod 804 located inside the regulating tube 801, the top of the regulating tube 801 is fixedly installed with an alarm tube 807, the top of the piston rod 804 passes through the top of the regulating tube 801 and the bottom end of the alarm tube 807 in sequence and is fixedly connected with a permanent magnet 809 located inside the piston rod 804, the outer side of the piston rod 804 is movably sleeved with a limit spring 805, the limit spring The upper and lower ends of 805 are respectively connected to the top of the inner cavity of the regulating tube 801 and the bottom end of the piston plate 803. The outer side surface of the regulating tube 801 is fixedly connected to a return pipe 806 near the top. The other end of the return pipe 806 is connected to the outer side surface of the movable ring 6. A copper coil 808 is fixedly installed near the top of the inner cavity of the alarm tube 807. A touch switch 8010 is fixedly installed at the top of the inner cavity of the alarm tube 807. An alarm 8011 is fixedly installed in the middle of the top of the alarm tube 807. The output end of the touch switch 8010 is connected to the input end of the alarm 8011. The output end of the copper coil 808 is connected to an external Hall current sensor.

[0046] When a slight leakage occurs in the filter element 103, the flow entering the movable ring 6 will be greater than the constant flow, and part of the oil will enter the liquid inlet pipe 802 through the top of the movable ring 6, and at the same time enter the regulating pipe 801, and apply an upward thrust to the piston plate 803. At this time, the piston plate 803 and the piston rod 804 will move upward accordingly, and the limit spring 805 can be compressed, driving the permanent magnet 809 to move upward.

[0047] like Figure 5 and Figure 6As shown, when the limit spring 805 is in the extreme compression state, the piston plate 803 is at the highest point, and the piston plate 803 is located above the output end of the return pipe 806, the permanent magnet 809 is in contact with the touch switch 8010, and a one-way valve is installed inside the liquid inlet pipe 802 and the return pipe 806, and the directions of the valves are inward conduction and outward blockage and outward conduction and inward blockage respectively.

[0048] Example: When the leakage point is too large, the instantaneous flow rate will increase significantly, and the flow rate entering the regulating tube 801 will also increase significantly. At this time, the limit spring 805 can be compressed to the extreme position, and the permanent magnet 809 rises to the highest point until it contacts the touch switch 8010. At this time, the power supply of the alarm 8011 is turned on, and the alarm 8011 then sounds an alarm to indicate a large-scale leakage.

[0049] By further utilizing the changes in oil during leakage, that is, utilizing the sudden change in pressure during large-scale leakage, the upward displacement of the permanent magnet 809 is achieved, and the switch 8010 is triggered by utilizing its extreme displacement position. The entire process can be completed automatically, and large-scale leakage can be monitored in the first time, which significantly improves safety and reduces losses.

[0050] At the same time, when the pressure at the leakage point decreases or the leakage point is dealt with, part of the oil can flow back through the reflux pipe 806 and re-enter the interior of the movable ring 6. At the same time, the limit spring 805 can automatically reset, driving the piston plate 803 to automatically reset. At this time, the permanent magnet 809 is no longer located inside the copper coil 808, that is, it no longer cuts its magnetic field, and the device is reset until the leakage point is detected again.

[0051] By further utilizing the pressure of the oil, that is, when the device restores normal flow, since the oil flow is in a constant state, combined with the action of the alarm component 8, the alarm component 8 can be automatically reset. The entire process can be completed automatically and a continuous monitoring process can be maintained without the need for maintenance operations, thereby achieving all-weather monitoring of the device and improving monitoring efficiency.

[0052] like Figure 1 and Figure 2As shown, the power assembly 4 includes a mounting frame 401, and an extension block 402 is fixedly installed on one side of the mounting frame 401. The extension block 402 is movably connected to the lateral guide rail 3, and the extension block 402 moves up and down relative to the lateral guide rail 3. The middle part of the extension block 402 is threadedly sleeved with the adjusting screw 5. The bottom end of the mounting frame 401 is fixedly installed with a main motor 403, and the output shaft of the main motor 403 is fixedly installed with a driving gear 405, which is meshed with the driven gear ring 7. The output shaft of the main motor 403 is movably sleeved with a synchronous plate 404, and the other end of the synchronous plate 404 is movably connected to the movable ring 6, and the movable ring 6 rotates relative to the synchronous plate 404.

[0053] Example: When monitoring the outer surface of the filter element 103 for leakage, the main motor 403 can be started to drive the driving gear 405 at the bottom to rotate. At this time, the driven gear ring 7 on one side of the driving gear 405 rotates synchronously, and drives the movable ring 6 at the top to rotate relative to the filter element 103. At this time, the movable ring 6 can rotate around the monitoring position until a leakage occurs at a point at the monitoring position, and the oil flow into the movable ring 6 increases accordingly;

[0054] When the oil flow increases, that is, when the permanent magnet 809 moves upward, the permanent magnet 809 extends into the interior of the copper coil 808 and cuts the magnetic field inside the copper coil 808. The copper coil 808 then generates an induced current and transmits it to the external Hall current sensor. The sensor then operates, indicating that a leak has occurred at the monitoring location, and the monitoring process is completed.

[0055] By utilizing the oil flow rate that increases in a short period of time during leakage, through the change in flow rate, in conjunction with the function of the alarm component 8, and the external Hall current sensor, the pressure change can be converted into the displacement of the permanent magnet 809, and the displacement of the permanent magnet 809 can be converted into current change, thereby realizing a rapid monitoring process. The entire monitoring process responds quickly, and at the same time, the rotation of the movable ring 6 can also quickly capture the leakage point, realize rapid monitoring, thereby reducing filtration failure and improving service life.

[0056] A filter monitoring method with a leakage monitoring and alarm function comprises the following steps:

[0057] S1: Before use, connect the liquid inlet 102 to the filter port. During normal use, the oil enters the interior of the filter element 103 through the liquid inlet 102 and is filtered by the filter element 103. At the same time, before monitoring, the power assembly 4 and the movable ring 6 are lowered as a whole by rotating the adjusting screw 5 until they are adjusted to the position to be monitored;

[0058] S2: During monitoring, the extended block 402 is opened to drive the driving gear 405 to rotate. At this time, the driven gear ring 7 rotates accordingly, and synchronously drives the movable ring 6 to rotate relative to the filter element 103. If the filter element 103 at the monitoring position leaks, oil with a flow rate greater than the normal flow rate enters the interior of the movable ring 6;

[0059] S3: At the same time, liquid enters the interior of the regulating tube 801 through the liquid inlet pipe 802 and applies pressure to the piston plate 803. At this time, the limit spring 805 can be compressed, and the piston plate 803 and the piston rod 804 can be moved upward. At the same time, the permanent magnet 809 moves upward until it enters the interior of the copper coil 808, cutting the magnetic field of the copper coil 808, generating an induced current. The external Hall current sensor then detects the current, indicating that a leakage phenomenon has occurred.

[0060] S4: If the leakage is too large, the instantaneous flow entering the regulating tube 801 will increase significantly. At this time, the limit spring 805 is compressed to the extreme position, and the permanent magnet 809 rises to the highest point. At this time, the permanent magnet 809 can contact the touch switch 8010, and the power of the alarm 8011 is turned on, completing the alarm. When the flow at the leakage point decreases, the oil can complete the reflux through the reflux pipe 806, and the alarm component 8 automatically resets.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A filter with a leakage monitoring and alarm function, comprising a filter assembly (1), characterized in that: The filter assembly (1) comprises a metal shell (101), the top end of the metal shell (101) is fixedly connected to a liquid inlet (102), a filter element (103) is fixedly mounted on the outer side of the metal shell (101), an extension frame (2) is fixedly mounted on one side of the outer side of the metal shell (101), a lateral guide rail (3) is mounted in the middle of the extension frame (2), a power assembly (4) is movably sleeved inside the lateral guide rail (3), and a movable filter element (103) is movably sleeved on the outer side of the filter element (103). Ring (6), the bottom end of the movable ring (6) is fixedly mounted with a driven gear ring (7), the driven gear ring (7) is meshedly connected with the power assembly (4), the outer side surface of the movable ring (6) is movably connected with the power assembly (4), the movable ring (6) rotates relative to the power assembly (4), one side of the movable ring (6) is fixedly connected with an alarm assembly (8), the inside of the lateral guide rail (3) is movably mounted with an adjusting screw rod (5), and the adjusting screw rod (5) is threadedly connected with the power assembly (4); The alarm assembly (8) comprises a regulating tube (801), the bottom end of the regulating tube (801) is fixedly connected to a liquid inlet tube (802), the bottom end of the liquid inlet tube (802) is connected to the top end of the movable ring (6), the interior of the regulating tube (801) is movably sleeved with a piston plate (803), and the top end of the piston plate (803) is fixedly mounted with a piston rod (804) located inside the regulating tube (801); The top end of the regulating tube (801) is fixedly mounted with an alarm tube (807), and the top end of the piston rod (804) sequentially passes through the top end of the regulating tube (801) and the bottom end of the alarm tube (807) and is fixedly connected to a permanent magnet (809) located inside the piston rod (804); The outer side surface of the piston rod (804) is movably sleeved with a limit spring (805), and the upper and lower ends of the limit spring (805) are respectively connected to the top end of the inner cavity of the regulating tube (801) and the bottom end of the piston plate (803). The outer side surface of the regulating tube (801) is fixedly connected to a return pipe (806) near the top end, and the other end of the return pipe (806) is connected to the outer side surface of the movable ring (6); A copper coil (808) is fixedly mounted near the top of the inner cavity of the alarm tube (807), a touch switch (8010) is fixedly mounted at the top of the inner cavity of the alarm tube (807), an alarm (8011) is fixedly mounted in the middle of the top of the alarm tube (807), the output end of the touch switch (8010) is connected to the input end of the alarm (8011), and the output end of the copper coil (808) is connected to an external Hall current sensor; When the limit spring (805) is in the ultimate compression state, the piston plate (803) is at the highest point, and the piston plate (803) is located above the output end of the return pipe (806), the permanent magnet (809) is in contact with the touch switch (8010), and the inside of the liquid inlet pipe (802) and the return pipe (806) are both installed with a one-way valve, and the directions of the valve are inward conduction and outward blocking, and outward conduction and inward blocking, respectively; The power assembly (4) includes a mounting frame (401), an extension block (402) is fixedly mounted on one side of the mounting frame (401), the extension block (402) is movably engaged with the lateral guide rail (3), the extension block (402) moves up and down relative to the lateral guide rail (3), and the middle portion of the extension block (402) is threadedly engaged with the adjusting screw rod (5); A main motor (403) is fixedly mounted on the bottom end of the mounting frame (401), a driving gear (405) is fixedly mounted on the output shaft of the main motor (403), the driving gear (405) is meshingly connected with the driven gear ring (7), a synchronizing plate (404) is movably sleeved on the output shaft of the main motor (403), the other end of the synchronizing plate (404) is movably connected to the movable ring (6), and the movable ring (6) rotates relative to the synchronizing plate (404).

2. A monitoring method using the filter according to claim 1, characterized in that: The following steps are involved: S1: Before use, connect the liquid inlet (102) to the filter port. During normal use, the oil enters the interior of the filter element (103) through the liquid inlet (102) and is filtered by the filter element (103). At the same time, before monitoring, the power assembly (4) and the movable ring (6) are driven to descend as a whole by rotating the adjusting screw (5) until they are adjusted to the position to be monitored; S2: During monitoring, the main motor (403) is turned on to drive the driving gear (405) to rotate. At this time, the driven gear ring (7) rotates accordingly, and synchronously drives the movable ring (6) to rotate relative to the filter element (103). If the filter element (103) at the position to be monitored leaks, the oil with a flow rate greater than the normal flow rate enters the interior of the movable ring (6); S3: At the same time, the liquid enters the interior of the regulating tube (801) through the liquid inlet pipe (802) and applies pressure to the piston plate (803). At this time, the limit spring (805) can be compressed, and the piston plate (803) and the piston rod (804) are moved upward. At the same time, the permanent magnet (809) moves upward until it enters the interior of the copper coil (808), cutting the magnetic field of the copper coil (808) and generating an induced current. The external Hall current sensor then detects the current, indicating that a leakage phenomenon has occurred. S4: If the leakage is too large, the instantaneous flow into the regulating tube (801) increases significantly. At this time, the limit spring (805) is compressed to the limit position, and the permanent magnet (809) rises to the highest point. At this time, the permanent magnet (809) can contact the touch switch (8010), and the power supply of the alarm (8011) is turned on, completing the alarm. When the flow at the leakage point decreases, the oil can complete the return flow through the return pipe (806), and the alarm component (8) automatically resets.

Images