Alarm Y-shaped filter convenient for protecting feed pump

Abstract

The invention relates to the technical field of filters, in particular to an alarm Y-shaped filter convenient for protecting a water feeding pump, which comprises a main pipe, the inner wall of the main pipe is fixedly communicated with an inclined downward branch pipe, the inner wall of the branch pipe is fixedly connected with a filter basket, and the filter basket extends into the main pipe; the automatic cleaning mechanism is arranged in the filter basket, the automatic cleaning mechanism further comprises a rotating rod rotationally connected to the inner wall of the filter basket, and a water wheel is fixedly connected to the top end of the rotating rod. When water enters the filter basket, impact force drives a water wheel to rotate, then a rotating rod and a first connecting plate are promoted to rotate, a cleaning cover continuously cleans the inner wall of the filter basket, meanwhile, the rotating rod rotates to drive a connecting rod and a current-conducting plate to rotate and cut magnetic induction lines to generate current, and a PLC regulates and controls the current introduced into a piezoelectric ceramic piece according to the magnitude of the current. When the filter basket is blocked and the current becomes small, the current introduced into the piezoelectric ceramic piece is increased, and the vibration of the piezoelectric ceramic piece is strengthened.

Description

Technical Field

[0001] The invention relates to the technical field of filters, and in particular to an alarm Y-type filter which is convenient for protecting a water supply pump. Background Art

[0002] The Y-type filter is an indispensable filtering device in the pipeline system for conveying media. The Y-type filter is usually installed at the inlet end of the water pump to remove impurities in the water so that the equipment can be used normally without being affected by impurities in the water, thereby extending the service life of the water pump. The Y-type filter has the characteristics of simple and advanced structure and low resistance. The Y-type filter is mainly composed of main pipe, connecting pipe, filter basket, flange, flange cover and bolt fasteners. When water passes through the Y-type filter, solid impurity particles are blocked in the filter basket, and clean water passes through the filter basket and is discharged from the filter outlet. For example, the Y-type filter with built-in alarm disclosed in application number CN202121376279.5.

[0003] Due to the long-term use of the Y-type filter, solid impurity particles in the water are blocked in the filter basket. The accumulation of impurities in the filter basket will cause blockage and affect the filtering effect. However, the existing Y-type filter usually needs to be manually cleaned and replaced after the filter basket is blocked. The impurities cannot be automatically cleaned and discharged during filtering in the filter basket. The reason is that the Y-type filter does not have motors, hydraulic drive devices and other components that can provide power for automatic cleaning of impurities. Without these drive components, it is impossible to achieve actions such as automatic vibration, rotation or scraping of the filter screen that can separate impurities from the filter screen and discharge them. Therefore, it can only be replaced and cleaned manually, but manual inspection cannot achieve real-time monitoring, and may be discovered only when the blockage is more serious. When cleaning or replacing the filter basket, the relevant system often needs to be shut down, which will cause production interruption and affect the continuity of the entire production process. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an alarm Y-type filter that is convenient for protecting a water pump, which can effectively solve the problem that the prior art cannot automatically clean and discharge impurities during filtering in the filter basket.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an alarm Y-type filter for protecting a water supply pump, comprising: A main pipe, the inner wall of which is fixedly connected to a branch pipe inclined downward, the inner wall of which is fixedly connected to a filter basket, and the filter basket extends into the main pipe; An automatic cleaning mechanism, wherein the automatic cleaning mechanism is arranged in the filter basket, the automatic cleaning mechanism also includes a rotating rod rotatably connected to the inner wall of the filter basket, the top of the rotating rod is fixedly connected to the water wheel, the outer wall of the rotating rod is fixedly connected to the first connecting plate, the outer wall of the first connecting plate is fixedly connected to the cleaning cover, the cleaning cover has a collecting port, and the direction of the collecting port is consistent with the rotation direction of the water wheel, and the side wall of the cleaning cover is in rotational contact with the inner circumferential wall of the filter basket, the outer wall of the rotating rod is fixedly connected to the second connecting plate, and the other end of the second connecting plate is fixedly connected to the vibration assembly, the automatic cleaning mechanism also includes an auxiliary assembly, the auxiliary assembly includes a sliding port opened on the outer wall of the filter basket, the inner wall of the sliding port is slidably connected to a blocking plate, and when the blocking plate extends into the filter basket, the collecting port of the cleaning cover is in airtight contact with the outer wall of the blocking plate; The pressure detection mechanism includes detection ports opened at the water inlet and outlet of the main pipe, the bottom end of the main pipe is fixedly connected to two symmetrical detection shells, and the water inlets of the two detection shells correspond to the positions of the two detection ports respectively, and a sliding rheostat is arranged in the detection shell.

[0006] Preferably, the automatic cleaning mechanism also includes a first water baffle plate slidably connected to the inner wall of the cleaning cover, a telescopic groove is provided on the side wall of the first water baffle plate, two first elastic telescopic rods are fixedly connected to the inner wall of the telescopic groove, the telescopic ends of the two first elastic telescopic rods are fixedly connected to the second water baffle plate, and the other end of the second water baffle plate is in sliding contact with the inner wall of the cleaning cover.

[0007] Preferably, the bottom end of the rotating rod rotates air-tightly through the bottom end of the filter basket and is fixedly connected to a connecting rod, the outer wall of the connecting rod is fixedly connected to a conductive plate, the bottom end of the filter basket is fixedly connected to a magnetic isolation shell, the other end of the connecting rod rotates air-tightly through the inner bottom wall of the magnetic isolation shell and extends to the outside of the magnetic isolation shell, the inner top wall and inner bottom wall of the magnetic isolation shell are respectively fixedly connected to parallel N-grade magnets and S-grade magnets, the conductive plate is electrically connected to a PLC controller and forms a first detection circuit.

[0008] Preferably, a storage groove is provided at the position where the first connecting plate contacts the cleaning cover, a conveying groove connected to the storage groove is provided inside the first connecting plate, a discharge cavity connected to the conveying groove is provided inside the rotating rod and the connecting rod, a valve cover is fixedly provided at the bottom end of the branch pipe by bolts, a suction pump is fixedly connected to the outer wall of the valve cover, a suction end of the suction pump is fixedly connected to a suction pipe, the other end of the suction pipe is airtightly rotatably connected to the conveying groove, and the suction pump is connected to a PLC control electrical signal to form a cleaning circuit.

[0009] Preferably, the vibration assembly includes two second elastic telescopic rods fixedly connected to the side walls of the second connecting plate, the telescopic ends of the second elastic telescopic rods are fixedly connected to a vibration cleaning block, the vibration cleaning block is rotationally contacted with the inner circumferential wall of the filter basket, and the outer wall of the vibration cleaning block on one side close to the second elastic telescopic rods is fixedly connected to a plurality of piezoelectric ceramic sheets, the piezoelectric ceramic sheets are electrically connected to the PLC controller and form a vibration circuit.

[0010] Preferably, the auxiliary component includes a telescopic shell fixedly connected to the outer wall of the branch pipe, the inner wall of the telescopic shell is fixedly connected with a first electromagnetic block and two return springs, the other ends of the two return springs are commonly fixedly connected to a blocking plate, a telescopic opening is provided on the outer wall of the branch pipe, the blocking plate is in sliding contact with the inner wall of the telescopic shell and the inner wall of the telescopic opening, the blocking plate is fixedly connected with a first permanent magnet block on the side close to the first electromagnetic block, and the first electromagnetic block and the first permanent magnet block magnetically repel each other.

[0011] Preferably, the contact surface between the blocking plate and the cleaning cover is provided with a sliding groove which is symmetrical up and down, the inner wall of the sliding groove is fixedly connected with a second electromagnetic block, the outer wall of the second electromagnetic block is fixedly connected with a plastic spring, the other end of the plastic spring is fixedly connected with a second permanent magnet block, the second electromagnetic block and the second permanent magnet block magnetically repel each other, the outer wall of the second permanent magnet block is fixedly connected with a push block which is in sliding contact with the inner wall of the sliding groove, the push block contacts with the outer wall of the first water baffle after extending into the cleaning cover, the PLC controller is electrically connected to the first electromagnetic block and the second electromagnetic block to form an auxiliary circuit, the inner wall of the cleaning cover is fixedly connected with a fixing plate which is symmetrical up and down, and a connecting spring is fixedly connected between the fixing plate and the first water baffle.

[0012] Preferably, the pressure detection mechanism includes an extrusion plate slidably connected to the inner wall of the detection shell, the bottom end of the extrusion plate is fixedly connected to the bottom wall of the detection shell with a pressure spring, the side wall of the extrusion plate is embedded with a first permanent magnetic ring, the inner wall of the detection shell is provided with a sliding cavity, the inner wall of the sliding cavity is slidably connected with a second permanent magnetic ring magnetically attracted to the first permanent magnetic ring, the outer peripheral wall of the second permanent magnetic ring is fixedly connected with a magnetic isolation ring, the outer peripheral wall of the magnetic isolation ring is fixedly connected with a conductive ring, the inner peripheral wall of the sliding cavity is fixedly connected with a resistor plate, the resistor plate is in sliding contact with the conductive ring, the conductive ring and the resistor plate are electrically connected to the PLC controller to form a detection circuit, the sliding rheostat is composed of a conductive ring and a resistor plate, and during the sliding process of the conductive ring on the resistor plate downward, the resistance of the sliding rheostat in the detection circuit gradually decreases.

[0013] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: When water enters the filter basket, the impact force drives the water wheel to rotate, which in turn drives the rotating rod and the first connecting plate to rotate, allowing the cleaning cover to continuously clean the inner wall of the filter basket. At the same time, the rotation of the rotating rod drives the connecting rod and the conductive plate to rotate, cutting the magnetic flux lines to generate current. The PLC controller adjusts the current passed into the piezoelectric ceramic piece according to the current. When the filter basket is blocked and the current becomes smaller, the current passed into the piezoelectric ceramic piece is increased to strengthen its vibration. The vibration force is transmitted to the vibration cleaning block through the second elastic telescopic rod to shake off the impurities in the filter basket. Once the filter basket is detected to be blocked, the PLC controller will energize the first and second electromagnetic blocks to extend the blocking plate, push the first water baffle, and the second water baffle will automatically retract and retract. The push block enters the storage tank and starts the suction pump at the same time to extract the impurities in the cleaning cover and discharge them.

[0014] Detection ports are respectively opened at the water inlet and outlet of the main pipe. When water enters the detection port, it squeezes the extrusion plate, which in turn drives the first permanent magnetic ring and the second permanent magnetic ring to move, prompting the conductive ring to move on the resistor plate, changing the resistance of the sliding rheostat, thereby changing the current. The PLC controller obtains the pressure difference by detecting the current of the two sliding rheostats at the water inlet and the water outlet. When the difference exceeds the standard range, it determines that the filter basket is blocked and transmits an electrical signal to the alarm to alarm. At the same time, the current generated by the conductive plate cutting the magnetic flux lines can also reflect the blockage of the filter basket. When the filter basket is blocked, the water flow speed decreases, the water wheel speed slows down, and the current generated by cutting the magnetic flux lines becomes smaller. The PLC controller can make a judgment based on this. The two methods of pressure detection and current detection based on cutting magnetic flux lines are used to verify each other. When one of the detection methods fails or is inaccurate, the other can still play a role to ensure timely and accurate detection of filter basket blockage so that corresponding cleaning measures can be taken in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a cross-sectional three-dimensional structure schematic diagram of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the detection shell of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the filter basket cross section of the present invention; Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the magnetic isolation shell of the present invention; Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 7 For the present invention Figure 6 A three-dimensional enlarged view of part B; Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the cleaning cover of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the telescopic shell of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the blocking plate cross section of the present invention; Fig.11 For the present invention Figure 4 A three-dimensional enlarged view of part A; Fig.12 This is a schematic diagram of the structure in which the blocking plate of the present invention extends into the filter basket; Fig.13 This is a schematic diagram of the structure in which the blocking plate of the present invention does not extend into the filter basket.

[0017] Figure numerals: 1, main pipe; 2, branch pipe; 3, filter basket; 4, automatic cleaning mechanism; 41, rotating rod; 42, water wheel; 43, first connecting plate; 44, cleaning cover; 45, second connecting plate; 46, vibration assembly; 461, second elastic telescopic rod; 462, vibration cleaning block; 463, piezoelectric ceramic sheet; 47, auxiliary assembly; 471, sliding port; 472, blocking plate; 473, telescopic shell; 474, first electromagnetic block; 475, reset spring; 476, telescopic port; 477, first permanent magnet block; 478, sliding groove; 479, second electromagnetic block; 4710, plastic spring; 4711, second permanent magnet block; 4712, push block; 4713, fixed plate; 4714, connecting spring; 48, first water baffle; 49, telescopic groove; 410, first elastic telescopic rod; 411, second water baffle; 412, connecting rod; 413, conductive plate; 414, magnetic isolation shell; 415, N-grade magnet; 416, S-grade magnet; 417, storage slot; 418, conveying slot; 419, discharge cavity; 420, valve cover; 421, suction pump; 422, suction pipe; 5, pressure detection mechanism; 51, detection port; 52, detection shell; 53, extrusion plate; 54, pressure spring; 55, first permanent magnetic ring; 56, sliding cavity; 57, second permanent magnetic ring; 58, conductive ring; 59, resistor plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0019] The present invention will be further described below in conjunction with the embodiments.

[0020] Example: Refer to Figures 1 to 13 , an alarm Y-type filter for protecting water supply pumps, comprising: A main pipe 1, the inner wall of which is fixedly connected with a branch pipe 2 inclined downward, the inner wall of which is fixedly connected with a filter basket 3, and the filter basket 3 extends into the main pipe 1; The automatic cleaning mechanism 4 is arranged in the filter basket 3. The automatic cleaning mechanism 4 also includes a rotating rod 41 rotatably connected to the inner wall of the filter basket 3. The top of the rotating rod 41 is fixedly connected to a water wheel 42. The outer wall of the rotating rod 41 is fixedly connected to a first connecting plate 43. The outer wall of the first connecting plate 43 is fixedly connected to a cleaning cover 44. The cleaning cover 44 has a collecting port, and the direction of the collecting port is consistent with the rotation direction of the water wheel 42. The side wall of the cleaning cover 44 is in rotational contact with the inner circumferential wall of the filter basket 3. The outer wall of the rotating rod 41 is fixedly connected to a second connecting plate 43. The second connecting plate 45 is fixedly connected to a vibration assembly 46 at the other end of the second connecting plate 45. The automatic cleaning mechanism 4 also includes an auxiliary assembly 47. The auxiliary assembly 47 includes a sliding opening 471 opened on the outer wall of the filter basket 3. The inner wall of the sliding opening 471 is slidably connected to a blocking plate 472. When the blocking plate is extended into the filter basket 3, the collecting opening of the cleaning cover 44 is in airtight contact with the outer wall of the blocking plate 472. The contact position between the cleaning cover 44 and the blocking plate 472 is inclined, so that the cleaning cover 44 and the blocking plate 472 can be tightly fitted when they are in contact. The automatic cleaning mechanism 4 also includes a first water baffle 48 slidably connected to the inner wall of the cleaning cover 44, a telescopic groove 49 is provided on the side wall of the first water baffle 48, two first elastic telescopic rods 410 are fixedly connected to the inner wall of the telescopic groove 49, and the telescopic ends of the two first elastic telescopic rods 410 are fixedly connected to the second water baffle 411, and the other end of the second water baffle 411 is in sliding contact with the inner wall of the cleaning cover 44.

[0021] The bottom end of the rotating rod 41 rotates air-tightly through the bottom end of the filter basket 3 and is fixedly connected to a connecting rod 412, the outer wall of the connecting rod 412 is fixedly connected to a conductive plate 413, the bottom end of the filter basket 3 is fixedly connected to a magnetic isolation shell 414, the other end of the connecting rod 412 rotates air-tightly through the inner bottom wall of the magnetic isolation shell 414 and extends to the outside of the magnetic isolation shell 414, the inner top wall and the inner bottom wall of the magnetic isolation shell 414 are respectively fixedly connected to parallel N-grade magnets 415 and S-grade magnets 416, the conductive plate 413 is electrically connected to a PLC controller and forms a first detection loop, wherein the PLC controller is connected to an external alarm electrical signal, and the current generated by cutting the magnetic flux lines will be stored in an external capacitor.

[0022] A storage groove 417 is provided at the position where the first connecting plate 43 contacts the cleaning cover 44, a conveying groove 418 connected to the storage groove 417 is provided inside the first connecting plate 43, a discharge cavity 419 connected to the conveying groove 418 is provided inside the rotating rod 41 and the connecting rod 412, a valve cover 420 is fixedly provided at the bottom end of the branch pipe 2 by bolts, a suction pump 421 is fixedly connected to the outer wall of the valve cover 420, a suction end of the suction pump 421 is fixedly connected to a suction pipe 422, the other end of the suction pipe 422 is connected to the conveying groove 418 in an airtight rotation manner, and the suction pump 421 is connected to the PLC control electrical signal to form a cleaning circuit.

[0023] The vibration assembly 46 includes two second elastic telescopic rods 461 fixedly connected to the side wall of the second connecting plate 45, and the telescopic ends of the second elastic telescopic rods 461 are fixedly connected with vibration cleaning blocks 462, and the vibration cleaning blocks 462 are in rotational contact with the inner peripheral wall of the filter basket 3. The outer wall of the vibration cleaning block 462 close to the second elastic telescopic rods 461 is fixedly connected with a plurality of piezoelectric ceramic pieces 463, and the piezoelectric ceramic pieces 463 are electrically connected to the PLC controller to form a vibration circuit. The piezoelectric ceramic pieces 463 are a functional ceramic material device that can convert electrical energy and mechanical energy into each other; The piezoelectric ceramic piece 463 vibrates after being energized based on the piezoelectric effect. The crystal structure of the material used to make it is special. When there is no external force or electric field, the internal positive and negative charge centers coincide and are electrically neutral. During manufacturing, it is polarized and the strong electric field causes the electric domains to be arranged along the direction of the electric field, generating a macroscopic piezoelectric effect. When an alternating voltage is applied to its electrodes, according to the inverse piezoelectric effect, the electric field changes cause the positive and negative charge centers inside the crystal to shift relative to each other, resulting in periodic deformation of the crystal, which manifests itself as vibration of the piezoelectric ceramic piece 463 on a macro scale.

[0024] The auxiliary component 47 includes a telescopic shell 473 fixedly connected to the outer wall of the branch pipe 2, the inner wall of the telescopic shell 473 is fixedly connected with a first electromagnetic block 474 and two return springs 475, the other ends of the two return springs 475 are fixedly connected to the blocking plate 472, and the outer wall of the branch pipe 2 is provided with a telescopic opening 476, the blocking plate 472 is in sliding contact with the inner wall of the telescopic shell 473 and the inner wall of the telescopic opening 476, and the blocking plate 472 is fixedly connected with a first permanent magnet block 477 on the side close to the first electromagnetic block 474, and the first electromagnetic block 474 and the first permanent magnet block 477 magnetically repel each other.

[0025] A sliding groove 478 which is symmetrical in vertical direction is provided on the contact surface between the blocking plate 472 and the cleaning cover 44. A second electromagnetic block 479 is fixedly connected to the inner wall of the sliding groove 478. A plastic spring 4710 is fixedly connected to the outer wall of the second electromagnetic block 479. A second permanent magnet block 4711 is fixedly connected to the other end of the plastic spring 4710. The second electromagnetic block 479 and the second permanent magnet block 4711 magnetically repel each other. A push block 4712 which is in sliding contact with the inner wall of the sliding groove 478 is fixedly connected to the outer wall of the second permanent magnet block 4711. The push block 4712 is extended into the cleaning cover 44 and contacts with the outer wall of the first water baffle plate 48. The PLC controller is electrically connected to the first electromagnetic block 474 and the second electromagnetic block 479 to form an auxiliary circuit. A fixing plate 4713 which is symmetrical in vertical direction is fixedly connected to the inner wall of the cleaning cover 44. A connecting spring 4714 is fixedly connected between the fixing plate 4713 and the first water baffle plate 48.

[0026] The pressure detection mechanism 5 includes detection ports 51 opened at the water inlet and outlet of the main pipe 1. Two symmetrical detection shells 52 are fixedly connected to the bottom end of the main pipe 1, and the water inlets of the two detection shells 52 correspond to the positions of the two detection ports 51 respectively. A sliding rheostat is arranged in the detection shell 52.

[0027] The pressure detection mechanism 5 includes an extrusion plate 53 slidably connected to the inner wall of the detection shell 52, the bottom end of the extrusion plate 53 and the inner bottom wall of the detection shell 52 are fixedly connected with a pressure spring 54, the side wall of the extrusion plate 53 is embedded with a first permanent magnetic ring 55, the inner wall of the detection shell 52 is provided with a sliding cavity 56, the inner wall of the sliding cavity 56 is slidably connected with a second permanent magnetic ring 57 magnetically attracted to the first permanent magnetic ring 55, the outer peripheral wall of the second permanent magnetic ring 57 is fixedly connected with a magnetic isolation ring, the outer peripheral wall of the magnetic isolation ring is fixedly connected with a conductive ring 58, the inner peripheral wall of the sliding cavity 56 is fixedly connected with a resistor plate 59, the resistor plate 59 is in sliding contact with the conductive ring 58, the conductive ring 58 and the resistor plate 59 are connected to the PLC controller electrical signal to form a detection circuit, the sliding rheostat is composed of the conductive ring 58 and the resistor plate 59, and when the conductive ring 58 slides downward on the resistor plate 59, the resistance of the sliding rheostat in the detection circuit gradually decreases.

[0028] The working principle of the present invention is as follows: First, the water outlet of the main pipe 1 in the Y-type filter is connected to the water inlet of the water pump (the connection method is the existing technology).

[0029] When using a water supply pump, the liquid to be transported, such as water, is discharged into the main pipe 1 through the water inlet of the main pipe 1. After being discharged into the main pipe 1, the liquid enters the filter basket 3 and is filtered by the filter basket 3. In this process, the water first enters the detection port 51, and when it is about to flow out, it enters another detection port 51. The initial pressure of the water is detected in the first detection port 51. Due to the flow of water and the filtering of the filter basket 3, pressure loss will occur. The reason is that when the fluid flows from the water inlet to the water outlet, it must pass through the pores of the filter screen. The filter screen forms resistance to the flow of the fluid, resulting in part of the pressure energy being converted into energy to overcome the resistance of the filter screen in this process, thereby making the outlet pressure lower than the inlet pressure. Therefore, the pressure difference between the two can also feedback the blockage degree of the filter basket 3.

[0030] After water enters the detection port 51, the water will squeeze the squeezing plate 53 downward, and drive the first permanent magnetic ring 55 to move downward through the squeezing plate 53, and drive the second permanent magnetic ring 57 to move synchronously through the first permanent magnetic ring 55, and then drive the conductive ring 58 to move downward synchronously, and then make the conductive ring 58 move downward on the resistor plate 59, and then change the current passing through the sliding rheostat, and detect the two sliding rheostats at the water inlet and the water outlet through the PLC controller (detect by the current of the two sliding rheostats). After pre-testing different water flow rates, the pressure difference at the water outlet and the water inlet will have a standard value range, and this pressure value range will be converted into current in advance. Therefore, by detecting the current passing through the two sliding rheostats, the pressure difference between the two places can be fed back. When the pressure difference between the two places exceeds the standard range, it may be caused by the blockage of the filter basket 3. Therefore, the PLC controller transmits an electrical signal to the external alarm, so that the alarm sounds an alarm to remind the staff that the filter basket 3 is blocked, so that the staff can know that the filter basket 3 is being automatically cleaned. The specific process of automatic cleaning is as follows: The following is the automatic cleaning of the Y-type filter during operation: When water enters the filter basket 3, the impact force of the water will cause the water wheel 42 to rotate, thereby driving the rotating rod 41 to rotate synchronously, thereby driving the first connecting plate 43 and the second connecting plate 45 to rotate synchronously, and driving the cleaning cover 44 to continuously clean the inner wall of the filter basket 3 through the first connecting plate 43. At the same time, the rotating rod 41 will drive the connecting rod 412 to rotate synchronously, so that the connecting rod 412 drives the conductive plate 413 to rotate, and the magnetic flux lines between the N-level magnet 415 and the S-level magnet 416 are cut through the conductive plate 413, thereby generating current (cutting magnetic flux line principle), and the current generated by cutting the magnetic flux lines is detected by the PLC controller. When the filter basket 3 is blocked, the current generated by cutting the magnetic flux lines is small. The reason is that when the filter basket is blocked, its effective water flow area will become smaller. According to the principle of the continuity equation, when the flow rate (water flow) remains constant, the water flow area and the water flow velocity are interrelated. When the water flow area of ​​the filter basket is reduced due to blockage, the water flow rate will inevitably decrease (under the premise of unchanged flow rate, the flow rate decreases, the current generated by cutting the magnetic flux lines will become smaller, on the contrary, the current becomes larger). We know that the water wheel 42 rotates by the impact force of the water flow. When the water flow rate decreases, the driving force from the water flow on the water wheel 42 will decrease. When the driving force decreases, the speed of the water wheel 42 will naturally slow down. Therefore, the current passed into the piezoelectric ceramic piece 463 is controlled by the PLC controller. The current passed into the piezoelectric ceramic piece 463 is opposite to the current generated by cutting the magnetic flux lines. Because there are too many impurities, the current generated by cutting the magnetic flux lines will become smaller. Therefore, the piezoelectric ceramic piece 463 needs to increase vibration to quickly clean up the blocked impurities. The specific method is as follows: After the piezoelectric ceramic piece 463 is energized, the piezoelectric ceramic piece 463 vibrates, and then transmits the vibration force to the vibration cleaning block 462 through the second elastic telescopic rod 461. The vibration cleaning block 462 vibrates the filter basket 3, and then the impurities attached to the filter basket 3 are shaken off, thereby achieving the effect of cleaning the filter basket 3.

[0031] Therefore, through the above two detection methods, it is possible to detect whether the filter basket 3 is blocked, so as to prevent one of the problems from occurring and to prevent inaccurate detection, and to make appropriate adjustments.

[0032] Since the filter basket 3 is cleaned all the time, but the cleaning cover 44 cleans too many impurities and the cleaning is not thorough, the filter basket 3 may be blocked. After the filter basket 3 is detected to be blocked, the first electromagnetic block 474 is energized through the PLC controller, and the first electromagnetic block 474 has a repulsive force on the first permanent magnet block 477, so that the blocking plate 472 moves toward the first water baffle plate 48 in the cleaning cover 44. At the same time, the second electromagnetic block 479 is energized, and the repulsive force of the second electromagnetic block 479 on the second permanent magnet block 4711 causes the push block 4712 to extend. Therefore, when the cleaning cover 44 moves to contact with the blocking plate 472, the push block 4712 will push the filter basket 3. The first water baffle plate 48 is moved backward. At the same time, the second water baffle plate 411 will automatically extend or retract as the interior of the cleaning cover 44 changes. The push of the push block 4712 will cause the first water baffle plate 48 and the second water baffle plate 411 to enter the storage tank 417. At the same time, the suction pump 421 is started by the PLC controller to extract the impurities collected in the cleaning cover 44 through the suction pump 421 and then discharge them. After the cleaning is completed, the first electromagnetic block 474 and the second electromagnetic block 479 are powered off to reset the first water baffle plate 48, the second water baffle plate 411, the push block 4712 and the blocking plate 472 (this cleaning time is known after pre-testing).

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An alarm Y-type filter for protecting a water pump, characterized in that: include: A main pipe (1), the inner wall of the main pipe (1) being fixedly connected to a branch pipe (2) inclined downward, the inner wall of the branch pipe (2) being fixedly connected to a filter basket (3), and the filter basket (3) extending into the main pipe (1); An automatic cleaning mechanism (4), the automatic cleaning mechanism (4) being arranged in the filter basket (3), the automatic cleaning mechanism (4) further comprising a rotating rod (41) rotatably connected to the inner wall of the filter basket (3), the top end of the rotating rod (41) being fixedly connected to a water wheel (42), the outer wall of the rotating rod (41) being fixedly connected to a first connecting plate (43), the outer wall of the first connecting plate (43) being fixedly connected to a cleaning cover (44), the cleaning cover (44) having a collecting port, the direction of the collecting port being consistent with the rotation direction of the water wheel (42), and the side wall of the cleaning cover (44) being aligned with the filter basket ( The inner peripheral wall of the rotating rod (41) is in rotational contact with the inner peripheral wall of the filter basket (3), the outer wall of the rotating rod (41) is fixedly connected to a second connecting plate (45), the other end of the second connecting plate (45) is fixedly connected to a vibration assembly (46), the automatic cleaning mechanism (4) further comprises an auxiliary assembly (47), the auxiliary assembly (47) comprises a sliding opening (471) formed on the outer wall of the filter basket (3), the inner wall of the sliding opening (471) is slidably connected to a blocking plate (472), and when the blocking plate extends into the filter basket (3), the collecting opening of the cleaning cover (44) is in airtight contact with the outer wall of the blocking plate (472); A pressure detection mechanism (5), the pressure detection mechanism (5) comprising detection ports (51) opened at the water inlet and the water outlet of the main pipe (1), the bottom end of the main pipe (1) being fixedly connected to two symmetrical detection shells (52), the water inlets of the two detection shells (52) respectively corresponding to the positions of the two detection ports (51), and a sliding rheostat being arranged in the detection shell (52).

2. The alarm Y-type filter for protecting a water supply pump according to claim 1 is characterized in that: The automatic cleaning mechanism (4) further comprises a first water baffle (48) slidably connected to the inner wall of the cleaning cover (44); a telescopic groove (49) is provided on the side wall of the first water baffle (48); two first elastic telescopic rods (410) are fixedly connected to the inner wall of the telescopic groove (49); the telescopic ends of the two first elastic telescopic rods (410) are fixedly connected to the second water baffle (411); and the other end of the second water baffle (411) is in slidable contact with the inner wall of the cleaning cover (44).

3. The alarm Y-type filter for protecting a water pump according to claim 2 is characterized in that: The bottom end of the rotating rod (41) rotates in an airtight manner through the bottom end of the filter basket (3) and is fixedly connected to a connecting rod (412); the outer wall of the connecting rod (412) is fixedly connected to a conductive plate (413); the bottom end of the filter basket (3) is fixedly connected to a magnetic isolation shell (414); the other end of the connecting rod (412) rotates in an airtight manner through the inner bottom wall of the magnetic isolation shell (414) and extends to the outside of the magnetic isolation shell (414); the inner top wall and the inner bottom wall of the magnetic isolation shell (414) are respectively fixedly connected to an N-grade magnet (415) and an S-grade magnet (416) arranged in parallel; and the conductive plate (413) is electrically connected to a PLC controller to form a first detection circuit.

4. The alarm Y-type filter for protecting a water supply pump according to claim 3 is characterized in that: A storage groove (417) is provided at a position where the first connecting plate (43) contacts the cleaning cover (44); a conveying groove (418) connected to the storage groove (417) is provided inside the first connecting plate (43); a discharge cavity (419) connected to the conveying groove (418) is provided inside the rotating rod (41) and the connecting rod (412); a valve cover (420) is fixedly provided at the bottom end of the branch pipe (2) by bolts; an outer wall of the valve cover (420) is fixedly connected to a material extraction pump (421); a material extraction end of the material extraction pump (421) is fixedly connected to a material extraction pipe (422); the other end of the material extraction pipe (422) is airtightly rotatably connected to the conveying groove (418); the material extraction pump (421) is connected to a PLC control electrical signal to form a cleaning circuit.

5. The alarm Y-type filter for protecting a water supply pump according to claim 3 is characterized in that: The vibration assembly (46) comprises two second elastic telescopic rods (461) fixedly connected to the side wall of the second connecting plate (45); the telescopic ends of the second elastic telescopic rods (461) are fixedly connected to vibration cleaning blocks (462); the vibration cleaning blocks (462) are in rotational contact with the inner peripheral wall of the filter basket (3); a plurality of piezoelectric ceramic sheets (463) are fixedly connected to the outer wall of one side of the vibration cleaning block (462) close to the second elastic telescopic rods (461); the piezoelectric ceramic sheets (463) are electrically connected to the PLC controller to form a vibration circuit.

6. The alarm Y-type filter for protecting a water pump according to claim 3 is characterized in that: The auxiliary component (47) comprises a telescopic shell (473) fixedly connected to the outer wall of the branch pipe (2); the inner wall of the telescopic shell (473) is fixedly connected to a first electromagnetic block (474) and two return springs (475); the other ends of the two return springs (475) are fixedly connected to a blocking plate (472); the outer wall of the branch pipe (2) is provided with a telescopic opening (476); the blocking plate (472) is in sliding contact with the inner wall of the telescopic shell (473) and the inner wall of the telescopic opening (476); the blocking plate (472) is fixedly connected to a first permanent magnet block (477) on one side of the blocking plate (472) close to the first electromagnetic block (474); the first electromagnetic block (474) and the first permanent magnet block (477) are magnetically repelled from each other.

7. The alarm Y-type filter for protecting a water supply pump according to claim 6, characterized in that: The contact surface between the blocking plate (472) and the cleaning cover (44) is provided with a sliding groove (478) which is symmetrical in the upper and lower directions. The inner wall of the sliding groove (478) is fixedly connected with a second electromagnetic block (479). The outer wall of the second electromagnetic block (479) is fixedly connected with a plastic spring (4710). The other end of the plastic spring (4710) is fixedly connected with a second permanent magnet block (4711). The second electromagnetic block (479) and the second permanent magnet block (4711) are magnetically repelled from each other. The outer wall of the second permanent magnet block (4711) is fixedly connected with a plastic spring (4710). A push block (4712) is fixedly connected to the inner wall of the sliding groove (478) for sliding contact. The push block (4712) contacts the outer wall of the first water baffle (48) after extending into the cleaning cover (44). The PLC controller is electrically connected to the first electromagnetic block (474) and the second electromagnetic block (479) to form an auxiliary circuit. The inner wall of the cleaning cover (44) is fixedly connected to a fixing plate (4713) symmetrical in upper and lower directions. A connecting spring (4714) is fixedly connected between the fixing plate (4713) and the first water baffle (48).

8. The alarm Y-type filter for protecting a water pump according to claim 3 is characterized in that: The pressure detection mechanism (5) comprises an extrusion plate (53) slidably connected to the inner wall of the detection shell (52); the bottom end of the extrusion plate (53) and the inner bottom wall of the detection shell (52) are fixedly connected to a pressure spring (54); a first permanent magnetic ring (55) is embedded in the side wall of the extrusion plate (53); a sliding cavity (56) is formed in the inner wall of the detection shell (52); a second permanent magnetic ring (57) magnetically attracted to the first permanent magnetic ring (55) is slidably connected to the inner wall of the sliding cavity (56); and the outer peripheral wall of the second permanent magnetic ring (57) is fixedly connected to A magnetic isolation ring, wherein the outer peripheral wall of the magnetic isolation ring is fixedly connected to a conductive ring (58), the inner peripheral wall of the sliding cavity (56) is fixedly connected to a resistor plate (59), the resistor plate (59) is in sliding contact with the conductive ring (58), the conductive ring (58) and the resistor plate (59) are connected to the PLC controller electrical signal to form a detection circuit, the sliding rheostat is composed of the conductive ring (58) and the resistor plate (59), and when the conductive ring (58) slides downward on the resistor plate (59), the resistance of the sliding rheostat in the detection circuit gradually decreases.

Images