CN118615763A - A liquid level meter with medium filtering structure - Google Patents

Abstract

The present invention relates to the technical field of liquid level gauges, and discloses a liquid level gauge with a medium filtering structure, including a vertical pipe, a flap indicating module fixed on the vertical pipe, a top pipe connected to the top of the vertical pipe, and a liquid inlet structure, the liquid inlet structure is arranged at the bottom end of the vertical pipe, the liquid inlet structure includes two fixed frames, a first three-way pipe, a second three-way pipe and a liquid inlet pipe, the two fixed frames are fixed on the vertical pipe, one end of the first three-way pipe is connected to the vertical pipe, the second three-way pipe is arranged at one end of the two fixed frames away from the vertical pipe, and the liquid inlet pipe is connected to one end of the second three-way pipe. The present invention is provided with a backwashing structure, and regular backwashing can effectively remove dirt and impurities attached to the filter screen, prevent the filter screen from being blocked, damaged or degraded due to the long-term accumulation of these substances, which helps to maintain the cleanliness and filtering efficiency of the filter screen.

Description

A liquid level meter with medium filtering structure

Technical Field

The present invention relates to the technical field of liquid level gauges, and in particular to a liquid level gauge with a medium filtering structure.

Background Art

A float level switch is a common liquid level measurement device, also known as a float level switch. It is commonly used in industrial and commercial applications to monitor the liquid level and control the operation of the equipment or send out an alarm signal based on the liquid level.

After searching, the Chinese patent with the announcement number CN207688976U discloses a magnetic flap level gauge, which includes: a level gauge body, a magnet float and an external magnetic flap, the level gauge body has a level gauge body opening; the magnet float is located in the level gauge body and can float on the liquid surface in the level gauge body; the magnetic flap is arranged outside the level gauge body, and the magnetic flap and the magnet float are magnetically matched. The level gauge proposed in the above scheme has high flexibility, does not damage the original container structure, and improves the system safety. However, the above scheme still has the following shortcomings when it is actually used:

At present, when the magnetic flap is monitoring the liquid level, solid impurities in the measured medium often enter the liquid level meter along with the fluid. On the one hand, if the solid impurities adhere to the magnetic float or the inner wall of the liquid level meter tube, it is easy to cause the magnetic float to be unable to move smoothly. Excessive adhesion may even cause blockage, affecting the accuracy of the monitoring results. On the other hand, the drain valve of the magnetic flap level meter is generally small. If too many solid particle impurities enter, it will affect the smoothness of the sewage discharge. Although the existing technology can solve this problem by adding a filter, when the filter is used for a long time, solid particle impurities are easily embedded in the mesh of the filter, causing blockage. Generally, the filter needs to be disassembled and replaced, which is not only cumbersome, but also the disassembly will affect the continuous monitoring of the measured medium.

Therefore, it is necessary to design a liquid level meter with a medium filtration structure to solve the above problems.

Summary of the invention

The purpose of the present invention is to solve the shortcomings of the prior art and to propose a liquid level meter with a medium filtering structure.

In order to achieve the above object, the present invention adopts the following technical solutions:

A liquid level gauge with a medium filtering structure comprises a vertical pipe, a flap indicating module is fixed on the vertical pipe, a top end of the vertical pipe is connected to a top pipe, and further comprises:

A liquid inlet structure, the liquid inlet structure is arranged at the bottom end of the vertical pipe, the liquid inlet structure comprises two fixing frames, a first three-way pipe, a second three-way pipe and a liquid inlet pipe, the two fixing frames are fixed on the vertical pipe, one end of the first three-way pipe is connected to the vertical pipe, the second three-way pipe is arranged at one end of the two fixing frames away from the vertical pipe, and the liquid inlet pipe is connected to one end of the second three-way pipe;

Two filtering structures, both of which are arranged between the first three-way pipe and the second three-way pipe;

Two impurity removal structures, the two impurity removal structures are respectively arranged on the two filtering structures;

A collecting structure, which is arranged below the liquid inlet structure and is used to collect waste water;

A backwashing structure, which is arranged below the liquid inlet structure and is used to flush and clean the two filter structures;

The driving structure is arranged above the backwashing structure and is used to drive the collection structure and the backwashing structure to operate.

As a preferred technical solution of the present invention, the filtering structure comprises:

A first installation pipe, one end of which is connected to the second three-way pipe;

A connecting pipe 1, wherein the connecting pipe 1 is connected to the other end of the mounting pipe 1;

A second installation pipe, one end of which is connected to the first three-way pipe;

A second connecting pipe, wherein the second connecting pipe is slidably sleeved on the other end of the second mounting pipe;

Spring 1, one end of the spring 1 is connected to connecting pipe 2;

A collar 1, wherein the collar 1 is fixedly sleeved on the mounting tube 2, and the collar 1 is connected to the other end of the spring 1;

An annular groove, the annular groove is formed on the connecting pipe 1;

Two valves 1, the two valves 1 are respectively installed on the installation pipe 1 and the installation pipe 2;

A water supply pipe, the water supply pipe being in communication with the second installation pipe;

A sewage pipe, the sewage pipe is in communication with the installation pipe;

Two valves 2 are respectively installed on the water supply pipe and the sewage pipe.

As a preferred technical solution of the present invention, the filtering structure comprises:

A mounting ring, the mounting ring being placed in the connecting pipe 1;

A filter screen is fixed on the mounting ring.

As a preferred technical solution of the present invention, a fixing plate is fixed on the mounting ring, a rotating shaft is rotatably mounted on the fixing plate, a driving member is fixedly sleeved on the rotating shaft, a brush plate is fixed on one end of the rotating shaft away from the fixing plate, and bristles are arranged on the brush plate, and the bristles are in contact with the filter.

As a preferred technical solution of the present invention, the collection structure includes:

Two connecting frames, the two connecting frames are respectively fixed on the sides of the two fixing frames;

A collecting container, wherein the collecting container is fixed between the two connecting frames, and the top of the collecting container is open;

Two bearing seats, the two bearing seats are respectively fixed at two ends of the top surface of the collection container;

Two inner containers, both of which are placed on the inner bottom surface of the collection container;

A guide plate, the guide plate is rotatably arranged above the collection container;

Two shaft rods are respectively fixed at two ends of the guide plate, and the two shaft rods are respectively rotatably mounted on two bearing seats.

As a preferred technical solution of the present invention, the backwashing structure comprises:

A sealed container, which is fixed to the side of the collecting container and has a hollow structure;

A slide plate, the slide plate is sealingly and slidably connected inside the sealed container;

A connecting rod, one end of which is fixedly connected to the slide plate, and the other end of which extends to the outside of the sealed container;

A top plate, the top plate being fixed to one end of the connecting rod located outside the sealed container;

Two connecting pipes, one end of each of the connecting pipes is connected to the sealed container;

Two one-way valves, the two one-way valves are respectively installed on the two connecting pipes;

Spring three, the spring three is arranged between the sealed container and the slide plate;

A horizontal pipe, the horizontal pipe is connected to one end of one of the connecting pipes away from the sealed container, and the horizontal pipe is connected to the two water supply pipes;

A water tank is fixed on the side of the collecting container and is connected with an end of another connecting pipe away from the sealed container.

As a preferred technical solution of the present invention, the driving structure includes:

An electric push rod, which is mounted on one of the connecting frames;

A rack, which is fixed to the telescopic end of the electric push rod and is located just above the top plate;

A gear is fixedly sleeved on one of the shafts.

As a preferred technical solution of the present invention, a fixing structure is provided on each of the two connecting pipes, and the fixing structure comprises:

A second sleeve ring, wherein the second sleeve ring is fixedly sleeved on the connecting pipe 1;

Spring 2, one end of which is connected to collar 2;

A sliding ring, wherein the sliding ring is slidably sleeved on the connecting pipe 1, and the sliding ring is connected to the other end of the spring 2;

Two openings, both of which are provided on the connecting pipe 1, and both of which are connected to the annular groove;

Two pressing blocks are respectively slidably arranged in the two openings, and both of the two pressing blocks are provided with inclined surfaces.

As a preferred technical solution of the present invention, a thread is arranged on the outer peripheral surface of the mounting ring, and a thread groove matching the thread is opened on the inner wall of the connecting pipe 1.

As a preferred technical solution of the present invention, the flow limiting directions of the two one-way valves are opposite.

The present invention has the following beneficial effects:

By setting up a backwashing structure, regular backwashing can effectively remove dirt and impurities attached to the filter, preventing these substances from clogging, damaging or degrading the filter due to long-term accumulation. This helps to maintain the cleanliness and filtration efficiency of the filter, thereby extending the service life of the filter and even the entire equipment. The automatic backwashing function greatly simplifies the maintenance process. Traditionally, filter elements such as filters need to be manually disassembled, cleaned and reinstalled regularly, which is not only time-consuming and labor-intensive, but may also cause equipment damage or prolonged downtime due to improper operation. The automatic backwashing system can automatically complete the cleaning task during the operation of the equipment without manual intervention;

By introducing two alternately working filter structures, the medium liquid level is continuously monitored while the filter is being cleaned. By using the two filter structures alternately, when one filter is in the cleaning state, the other filter can still work normally, ensuring that the monitoring process is uninterrupted, which is especially important for scenarios that require real-time liquid level data.

The bristles on the brush plate continuously brush the filter screen during the rotation process. This mechanical brushing action can more effectively remove stubborn impurities and tiny particles attached to the surface of the filter screen, especially those impurities that are difficult to remove by simple water flow flushing. This double cleaning mechanism significantly improves the cleaning effect of the backwash structure on the filter screen;

The quick disassembly and assembly design of the filter greatly simplifies the maintenance process. When the filter needs to be replaced, the staff can quickly complete the disassembly and assembly with simple operations without complicated tools or long-term operations, thereby improving maintenance efficiency. Since the disassembly and assembly process is simple and quick, the risk of equipment damage caused by improper disassembly and assembly is reduced, and the production loss caused by long-term downtime for maintenance is also reduced, which helps to reduce the overall maintenance cost;

The fixing structure uses the elastic force of spring 2 to make the sliding ring always press the two pressing blocks, thereby firmly fixing the connecting pipe 2. This design avoids accidental falling off between the connecting pipe 2 and the connecting pipe 1, and improves the stability and reliability of the connection.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a liquid level meter with a medium filtering structure proposed by the present invention;

FIG2 is a schematic structural diagram of a liquid level meter with a medium filtering structure proposed by the present invention from another perspective;

FIG3 is a structural schematic diagram of a liquid level meter with a medium filtering structure proposed by the present invention from another perspective;

FIG4 is a schematic structural diagram of a filtering structure;

FIG5 is a schematic structural diagram of a collection structure;

FIG6 is a schematic diagram of the structure of the rotating shaft, the driving member, the brush plate and the bristles;

FIG7 is an enlarged view of the structure at point A in FIG2;

FIG8 is an enlarged view of the structure at B in FIG4;

FIG9 is an enlarged view of the structure at point C in FIG3 ;

FIG. 10 is an enlarged view of the structure at point D in FIG. 3 .

In the figure: 1, vertical pipe; 2, flap indicator module; 3, top pipe; 41, fixed frame; 42, first three-way pipe; 43, second three-way pipe; 44, liquid inlet pipe; 51, installation pipe 1; 52, connecting pipe 1; 53, installation pipe 2; 54, connecting pipe 2; 55, spring 1; 56, collar 1; 57, annular groove; 58, valve 1; 59, water supply pipe; 510, sewage pipe; 511, valve 2; 61, installation ring; 62, fixed plate; 63, rotating shaft; 64, driving member; 65, brush plate; 66. Brush; 67. Filter; 71. Ring 2; 72. Spring 2; 73. Sliding ring; 74. Opening; 75. Pressing block; 81. Connecting frame; 82. Collecting container; 83. Bearing seat; 84. Inner tank; 85. Guide plate; 86. Shaft; 91. Sealed container; 92. Slide plate; 93. Connecting rod; 94. Top plate; 95. Connecting pipe; 96. One-way valve; 97. Spring 3; 98. Horizontal pipe; 99. Water tank; 101. Electric push rod; 102. Rack; 103. Gear.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

1-10 , a liquid level gauge with a medium filtering structure includes a vertical pipe 1, a flap indicating module 2 is fixed on the vertical pipe 1, and a top end of the vertical pipe 1 is connected to a top pipe 3;

The liquid level gauge also includes a liquid inlet structure, which is arranged at the bottom end of the vertical pipe 1. The liquid inlet structure includes two fixing frames 41, a first three-way pipe 42, a second three-way pipe 43 and a liquid inlet pipe 44. The two fixing frames 41 are fixed on the vertical pipe 1, one end of the first three-way pipe 42 is connected to the vertical pipe 1, and the second three-way pipe 43 is arranged at one end of the two fixing frames 41 away from the vertical pipe 1. The liquid inlet pipe 44 is connected to one end of the second three-way pipe 43;

The liquid level gauge also includes two filtering structures, both of which are arranged between the first three-way pipe 42 and the second three-way pipe 43, and the filtering structures include: a mounting pipe 51, one end of which is connected to the second three-way pipe 43; a connecting pipe 52, which is connected to the other end of the mounting pipe 51; a mounting pipe 53, one end of which is connected to the first three-way pipe 42; a connecting pipe 54, which is slidably sleeved on the other end of the mounting pipe 53; a spring 55, one end of which is connected to the connecting pipe 54; a collar 56, which is fixedly sleeved on the mounting pipe 53 and is connected to the other end of the spring 55; and an annular groove 57, which is arranged on the connecting pipe 52. ; Two valves 58, the two valves 58 are respectively installed on the installation pipe 1 51 and the installation pipe 2 53; water supply pipe 59, the water supply pipe 59 is connected to the installation pipe 2 53; sewage pipe 510, the sewage pipe 510 is connected to the installation pipe 1 51; two valves 511, the two valves 511 are respectively installed on the water supply pipe 59 and the sewage pipe 510. In the initial state, the two valves 58 on one of the filter structures are in the conducting state, and the two valves 58 on the other filter structure are in the closed state. The four valves 511 on the two water supply pipes 59 and the two sewage pipes 510 are all in the closed state. In this case, the monitored medium will enter the liquid inlet pipe 44, then pass through the filter structure in the conducting state, and finally enter the vertical pipe 1;

The two connecting tubes 52 are both provided with a fixed structure, which includes: a second collar 71, which is fixedly sleeved on the connecting tube 52; a second spring 72, one end of which is connected to the second collar 71; a sliding ring 73, which is slidably sleeved on the connecting tube 52, and the sliding ring 73 is connected to the other end of the second spring 72; two openings 74, which are both opened on the connecting tube 52, and the two openings 74 are connected to the annular groove 57; two clamping blocks 75, which are respectively slidably set in the two openings 74, and the two clamping blocks 75 are both provided with inclined surfaces. For the fixed structure, under the elastic force of the second spring 72, the sliding ring The ring 73 always has the tendency to compress the two clamping blocks 75. At this time, the sliding ring 73 can squeeze the inclined surfaces of the two clamping blocks 75, so that the two clamping blocks 75 can jointly press the connecting pipe 2 54, which can ensure the connection stability between the connecting pipe 2 54 and the connecting pipe 1 52, and avoid the connection pipe 2 54 and the connecting pipe 1 52 from falling off. A fixed structure is provided. Before pulling the connecting pipe 2 54, the staff needs to first pull the sliding ring 73 so that the sliding ring 73 no longer presses the two clamping blocks 75. Without the pressure of the sliding ring 73, the two clamping blocks 75 no longer press the connecting pipe 2 54. At this time, the staff can easily pull the connecting pipe 2 54 out of the annular groove 57;

The liquid level gauge also includes two impurity removal structures, which are respectively arranged on the two filtering structures. The impurity removal structures include: a mounting ring 61, which is placed in the connecting pipe 52, and a thread is arranged on the outer peripheral surface of the mounting ring 61, and a thread groove adapted to the thread is opened on the inner wall of the connecting pipe 52; a filter screen 67, which is fixed on the mounting ring 61. When the connecting pipe 54 is separated from the connecting pipe 52, the mounting ring 61 can be exposed. The mounting ring 61 and the connecting pipe 52 are connected by a threaded sleeve. The staff only needs to remove the mounting ring 61 from the connecting pipe 52 by rotating the mounting ring 61. This design realizes the rapid disassembly and assembly of the filter screen 67. A fixing plate 62 is fixed on the mounting ring 61, and a fixing plate 62 is rotated on the fixing plate 62. A rotating shaft 63 is installed on the rotating shaft 63, and a driving member 64 is fixedly sleeved on the rotating shaft 63. A brush plate 65 is fixed on one end of the rotating shaft 63 away from the fixed plate 62, and bristles 66 are arranged on the brush plate 65. The bristles 66 fit the filter screen 67. When the water flow backwashes the filter screen 67, the water flow can also cause the driving member 64 to rotate. This is because the driving member 64 includes a plurality of circumferentially distributed axial flow blades, so the flow of water can drive the plurality of axial flow blades to rotate. When the plurality of axial flow blades rotate, they can drive the brush plate 65 to rotate through the rotating shaft 63. When the brush plate 65 rotates, the bristles 66 thereon can continuously brush the filter screen 67. The brushing action of the bristles 66 is conducive to the impurities falling off the filter screen 67, thereby ensuring the cleaning effect of the backwashing structure on the filter screen 67.

The liquid level meter also includes a collecting structure, which is arranged below the liquid inlet structure and is used to collect waste water. The collecting structure includes: two connecting frames 81, which are respectively fixed to the sides of the two fixing frames 41; a collecting container 82, which is fixed between the two connecting frames 81, and the top of the collecting container 82 is open; two bearing seats 83, which are respectively fixed to the two ends of the top surface of the collecting container 82; two inner tanks 84, which are both placed on the inner bottom surface of the collecting container 82; a guide plate 85, which is rotatably arranged above the collecting container 82; two shaft rods 86, which are respectively fixed to the two ends of the guide plate 85, and the two shaft rods 86 are respectively rotatably mounted on the two bearing seats 83;

The liquid level meter also includes a backwashing structure, which is arranged below the liquid inlet structure and is used to flush and clean the two filtering structures. The backwashing structure includes: a sealed container 91, which is fixed to the side of the collecting container 82 and is a hollow structure; a slide plate 92, which is sealed and slidably connected to the inside of the sealed container 91; a connecting rod 93, one end of which is fixedly connected to the slide plate 92, and the other end extends to the outside of the sealed container 91; a top plate 94, which is fixed to one end of the connecting rod 93 located outside the sealed container 91; two connecting pipes 95, one end of which is connected to the sealed container 91; two one-way valves 96, which are respectively installed in the two connecting pipes. On the tube 95, the flow limiting directions of the two one-way valves 96 are opposite. For the two one-way valves 96 on the sealed container 91, their flow limiting directions are opposite. One of the one-way valves 96 limits the water flow to only enter the sealed container 91 through the water tank 99, and the other one-way valve 96 limits the water flow to only enter the cross tube 98 through the sealed container 91; spring three 97, spring three 97 is arranged between the sealed container 91 and the slide plate 92; cross tube 98, the cross tube 98 is connected to one end of one of the connecting tubes 95 away from the sealed container 91, and the cross tube 98 is connected to the two water supply pipes 59; water tank 99, the water tank 99 is fixed on the side of the collecting container 82, and the water tank 99 is connected to the other end of the connecting tube 95 away from the sealed container 91;

The liquid level meter also includes a driving structure, which is arranged above the backwashing structure and is used to drive the collection structure and the backwashing structure to operate. The driving structure includes: an electric push rod 101, which is installed on one of the connecting frames 81; a rack 102, which is fixed to the telescopic end of the electric push rod 101 and is located directly above the top plate 94; a gear 103, which is fixedly sleeved on one of the shafts 86. When the electric push rod 101 is in operation, it can drive the rack 102 to move downward. When the rack 102 moves downward, it will first mesh with the gear 103 and drive the gear 103 to rotate. When the gear 103 rotates, It can drive the corresponding shaft 86 to rotate, which makes the guide plate 85 rotate accordingly. With the continued operation of the electric push rod 101, the rack 102 will be separated from the gear 103. When the rack 102 is separated from the gear 103, the guide plate 85 no longer rotates. Relative to the initial state, the inclination angle of the guide plate 85 changes. In this case, the liquid flowing out through the sewage pipe 510 will flow into the other inner tank 84 under the guiding action of the guide plate 85. Therefore, the design of the rack 102 and the gear 103 is to automatically adjust the diversion direction of the guide plate 85 so that the two inner tanks 84 can separately collect the residual medium and the wastewater generated by flushing.

The specific working principle of the present invention is as follows:

When the liquid level gauge with a medium filtering structure proposed by the present invention is actually used, in the initial state, two valves 58 on one filtering structure are in a conducting state, and two valves 58 on another filtering structure are in a closed state, and four valves 511 on two water supply pipes 59 and two sewage pipes 510 are all in a closed state. In this case, the monitored medium will enter the liquid inlet pipe 44, then pass through the filtering structure in the conducting state, and finally enter the vertical pipe 1. A floating magnetic float is provided in the vertical pipe 1, and the magnetic float cooperates with the flap indicating module 2 to monitor the liquid level of the monitored medium. The specific principle of the magnetic flap liquid level monitoring is the existing technology, which will not be described in detail here.

When the medium passes through the filter screen 67 in the filter structure, the filter screen 67 can filter out impurities mixed in the medium, play a role in removing impurities from the medium entering the vertical pipe 1, and prevent impurities from affecting the normal operation of the liquid level monitoring device. With the use of the device, more impurities will be attached to the filter screen 67. At this time, the staff can use the backwashing structure to clean the impurities on the filter screen 67. Specifically, the staff first closes the two valves 58 on the filter structure in the conductive state, and then opens the two valves 58 on the filter structure in the closed state. In this case, the monitored medium will enter the interior of the vertical pipe 1 through the other filter structure, and the previously used filter structure will enter the state to be cleaned. By setting two filter structures, the device can use the two filter structures to monitor the liquid level of the medium alternately. Even if one of the filter screens 67 is in a cleaned state, the other clean filter screen 67 can also play a filtering function. Therefore, the action of cleaning the filter screen 67 can be performed synchronously with the liquid level monitoring, without stopping the liquid level monitoring of the medium, which can ensure the continuity of the device for the liquid level monitoring of the medium;

Furthermore, the filter screen 67 in the closed filter structure is backwashed. Specifically, the staff first opens the valve 2 511 on the sewage pipe 510 to put the sewage pipe 510 in a conducting state. At this time, the residual medium in the previously used filter structure will flow out through the sewage pipe 510 and flow onto the inclined guide plate 85. The residual medium will flow along the inclined guide plate 85 and finally flow into one of the inner tanks 84. This design can avoid the phenomenon of waste of medium resources. After the cleaning work is completed, the staff can put the medium collected in the inner tank 84 back into the container for storing the medium. After all the medium has flowed out, the staff opens the water supply pipe 59. The valve 2 511 on the upper part is turned on to make the water supply pipe 59 in the conducting state, and then the electric push rod 101 is started. When the electric push rod 101 is running, it can drive the rack 102 to move downward. When the rack 102 moves downward, it will first mesh with the gear 103 and drive the gear 103 to rotate. When the gear 103 rotates, it can drive the corresponding shaft 86 to rotate, which makes the guide plate 85 rotate accordingly. With the continued operation of the electric push rod 101, the rack 102 will separate from the gear 103. When the rack 102 separates from the gear 103, the guide plate 85 no longer rotates. Compared with the initial state, the inclination angle of the guide plate 85 changes. In this case, the water flows out through the sewage pipe 510. The liquid will flow into another inner tank 84 under the guidance of the guide plate 85. Therefore, the rack 102 and the gear 103 are designed to automatically adjust the diversion direction of the guide plate 85 so that the two inner tanks 84 can collect the residual medium and the waste water generated by flushing separately. Next, the rack 102 continues to move downward under the drive of the electric push rod 101, and pushes the top plate 94 downward. When the top plate 94 moves downward, it can drive the slide plate 92 downward through the connecting rod 93. During the downward movement of the slide plate 92, the water in the sealed container 91 can be pressed into the horizontal pipe 98. Then, the water flow will enter the corresponding filter structure through the water supply pipe 59 and flow in the filter structure in the closed state. It is worth mentioning that in this process, the water flows from the second three-way pipe 43 toward the first three-way pipe 42, which is opposite to the flow direction of the medium when entering the vertical pipe 1. Therefore, in this process, the water flow can backwash the filter 67 to flush away the dirt attached to the filter 67. Furthermore, the wastewater generated by the flushing and the impurities mixed in the wastewater will flow out through the drain pipe 510 together, and flow into another inner tank 84 under the guidance of the guide plate 85. In summary, under the action of the backwashing structure, the device can automatically backwash the filter 67 without removing the filter 67 for manual cleaning. This design can provide convenience for the actual use of the flip-plate liquid level gauge.

It should be noted that, during the backwashing process of the filter screen 67, the water flow can also cause the driving member 64 to rotate. This is because the driving member 64 includes a plurality of circumferentially distributed axial flow blades, and the flow of the water flow can drive the plurality of axial flow blades to rotate. When the plurality of axial flow blades rotate, the brush plate 65 can be driven to rotate through the rotating shaft 63. When the brush plate 65 rotates, the bristles 66 thereon can continuously brush the filter screen 67. The brushing action of the bristles 66 is conducive to the impurities falling off the filter screen 67, thereby ensuring the cleaning effect of the backwashing structure on the filter screen 67.

For the two one-way valves 96 on the sealed container 91, their limiting directions are opposite. One of the one-way valves 96 limits the water flow to only enter the sealed container 91 through the water tank 99, and the other one-way valve 96 limits the water flow to only enter the cross pipe 98 through the sealed container 91. When the electric push rod 101 drives the rack 102 to reset, the slide plate 92 will also reset under the action of the spring three 97. Under the one-way limiting action of the two one-way valves 96, the slide plate 92 can perform a pumping action during the reset process, and the water in the water tank 99 is pumped into the interior of the sealed container 91, so as to prepare for the next backwashing operation.

The present invention also provides a function of facilitating the disassembly and assembly of the filter screen 67. Specifically, when the filter screen 67 needs to be removed, the staff first pulls the connecting pipe 2 54 to move the connecting pipe 2 54 out of the annular groove 57. When the connecting pipe 2 54 is separated from the connecting pipe 1 52, the mounting ring 61 can be exposed. The mounting ring 61 and the connecting pipe 1 52 are connected by a threaded sleeve. The staff only needs to remove the mounting ring 61 from the connecting pipe 1 52 by rotating the mounting ring 61. This design realizes the rapid disassembly and assembly of the filter screen 67. In addition, when the connecting pipe 2 54 is inserted into the annular groove 57, the outer peripheral surface of the connecting pipe 2 54 and the groove wall of the annular groove 57 fit each other, which can ensure the sealing performance of the connection position between the connecting pipe 2 54 and the connecting pipe 1 52. Furthermore, the connecting pipe 1 52 is also provided with The fixing structure for fixing the connecting tube 2 54, for the fixing structure, under the elastic force of the spring 2 72, the sliding ring 73 always has the tendency to compress the two clamping blocks 75, at this time, the sliding ring 73 can squeeze the inclined surfaces of the two clamping blocks 75, so that the two clamping blocks 75 jointly press the connecting tube 2 54, which can ensure the connection stability between the connecting tube 2 54 and the connecting tube 1 52, and avoid the connection tube 2 54 and the connecting tube 1 52 from falling off, a fixing structure is provided, before the staff pulls the connecting tube 2 54, it is necessary to first pull the sliding ring 73, so that the sliding ring 73 no longer presses the two clamping blocks 75, lacks the pressure of the sliding ring 73, and the two clamping blocks 75 no longer press the connecting tube 2 54, at this time the staff can easily pull the connecting tube 2 54 out of the annular groove 57.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (10)

1. A liquid level gauge with a medium filtering structure, comprising a vertical pipe (1), a flap indicating module (2) being fixed on the vertical pipe (1), a top end of the vertical pipe (1) being connected to a top pipe (3), and characterized in that it further comprises: A liquid inlet structure, the liquid inlet structure being arranged at the bottom end of the vertical pipe (1), the liquid inlet structure comprising two fixing frames (41), a first three-way pipe (42), a second three-way pipe (43) and a liquid inlet pipe (44), the two fixing frames (41) being fixed on the vertical pipe (1), one end of the first three-way pipe (42) being connected to the vertical pipe (1), the second three-way pipe (43) being arranged at one end of the two fixing frames (41) away from the vertical pipe (1), and the liquid inlet pipe (44) being connected to one end of the second three-way pipe (43); Two filtering structures, both of which are arranged between the first three-way pipe (42) and the second three-way pipe (43); Two impurity removal structures, the two impurity removal structures are respectively arranged on the two filtering structures; A collecting structure, which is arranged below the liquid inlet structure and is used to collect waste water; A backwashing structure, which is arranged below the liquid inlet structure and is used to flush and clean the two filter structures; The driving structure is arranged above the backwashing structure and is used to drive the collection structure and the backwashing structure to operate. 2. A liquid level gauge with a medium filtering structure according to claim 1, characterized in that the filtering structure comprises: A mounting pipe (51), one end of which is connected to the second three-way pipe (43); A connecting pipe 1 (52), wherein the connecting pipe 1 (52) is connected to the other end of the mounting pipe 1 (51); A second mounting pipe (53), one end of which is connected to the first three-way pipe (42); A second connecting pipe (54), wherein the second connecting pipe (54) is slidably sleeved on the other end of the second mounting pipe (53); Spring 1 (55), one end of the spring 1 (55) is connected to connecting pipe 2 (54); A collar (56), wherein the collar (56) is fixedly sleeved on the mounting tube (53), and the collar (56) is connected to the other end of the spring (55); an annular groove (57), wherein the annular groove (57) is formed on the first connecting pipe (52); Two valves 1 (58), the two valves 1 (58) are respectively installed on the installation pipe 1 (51) and the installation pipe 2 (53); A water supply pipe (59), the water supply pipe (59) being in communication with the second installation pipe (53); A sewage discharge pipe (510), wherein the sewage discharge pipe (510) is connected to the first installation pipe (51); Two valves 2 (511), the two valves 2 (511) are respectively installed on the water supply pipe (59) and the sewage pipe (510). 3. A liquid level gauge with a medium filtering structure according to claim 2, characterized in that the impurity removal structure comprises: A mounting ring (61), wherein the mounting ring (61) is placed in the first connecting pipe (52); A filter screen (67) is fixed on the mounting ring (61). 4. A liquid level gauge with a medium filtering structure according to claim 3, characterized in that a fixing plate (62) is fixed on the mounting ring (61), a rotating shaft (63) is rotatably mounted on the fixing plate (62), a driving member (64) is fixedly sleeved on the rotating shaft (63), a brush plate (65) is fixed to one end of the rotating shaft (63) away from the fixing plate (62), and bristles (66) are arranged on the brush plate (65), and the bristles (66) are in contact with the filter screen (67). 5. A liquid level meter with a medium filtering structure according to claim 4, characterized in that the collection structure comprises: Two connecting frames (81), the two connecting frames (81) being respectively fixed on the sides of the two fixing frames (41); A collecting container (82), wherein the collecting container (82) is fixed between the two connecting frames (81), and the top end of the collecting container (82) is open; Two bearing seats (83), the two bearing seats (83) being respectively fixed at two ends of the top surface of the collecting container (82); Two inner containers (84), both of which are placed on the inner bottom surface of the collection container (82); a guide plate (85), the guide plate (85) being rotatably disposed above the collection container (82); Two shaft rods (86), the two shaft rods (86) are respectively fixed at two ends of the guide plate (85), and the two shaft rods (86) are respectively rotatably mounted on two bearing seats (83). 6. A liquid level gauge with a medium filtration structure according to claim 5, characterized in that the backwashing structure comprises: A sealed container (91), wherein the sealed container (91) is fixed to a side of the collection container (82), and the sealed container (91) is a hollow structure; A slide plate (92), the slide plate (92) being sealingly slidably connected to the inside of the sealed container (91); A connecting rod (93), one end of the connecting rod (93) being fixedly connected to the slide plate (92), and the other end of the connecting rod (93) extending to the outside of the sealed container (91); A top plate (94), the top plate (94) being fixed to one end of the connecting rod (93) located outside the sealed container (91); Two connecting pipes (95), one end of each of the two connecting pipes (95) being connected to the sealed container (91); Two one-way valves (96), the two one-way valves (96) being respectively installed on the two connecting pipes (95); Spring three (97), the spring three (97) being arranged between the sealed container (91) and the slide plate (92); a transverse pipe (98), the transverse pipe (98) being connected to one end of one of the connecting pipes (95) away from the sealed container (91), and the transverse pipe (98) being connected to two water supply pipes (59); A water tank (99), wherein the water tank (99) is fixed to a side of the collecting container (82), and the water tank (99) is connected to an end of another connecting pipe (95) away from the sealed container (91). 7. A liquid level meter with a medium filtering structure according to claim 6, characterized in that the driving structure comprises: An electric push rod (101), wherein the electric push rod (101) is mounted on one of the connecting frames (81); A rack (102), wherein the rack (102) is fixed to the telescopic end of the electric push rod (101), and the rack (102) is located directly above the top plate (94); A gear (103), wherein the gear (103) is fixedly sleeved on one of the shafts (86). 8. A liquid level gauge with a medium filtering structure according to claim 2, characterized in that a fixing structure is provided on each of the two connecting pipes (52), and the fixing structure comprises: A second sleeve ring (71), wherein the second sleeve ring (71) is fixedly sleeved on the first connecting pipe (52); Spring 2 (72), one end of the spring 2 (72) is connected to the ring 2 (71); A sliding ring (73), wherein the sliding ring (73) is slidably sleeved on the first connecting pipe (52), and the sliding ring (73) is connected to the other end of the second spring (72); Two openings (74), both openings (74) are formed on the first connecting pipe (52), and both openings (74) are connected to the annular groove (57); Two pressing blocks (75), the two pressing blocks (75) are slidably disposed in the two openings (74) respectively, and the two pressing blocks (75) are both provided with inclined surfaces. 9. A liquid level gauge with a medium filtering structure according to claim 3, characterized in that a thread is provided on the outer peripheral surface of the mounting ring (61), and a thread groove matching the thread is provided on the inner wall of the connecting pipe 1 (52). 10. The liquid level meter with a medium filtering structure according to claim 6, characterized in that the flow limiting directions of the two one-way valves (96) are opposite.