A water level monitoring device with recording function

Abstract

The present invention discloses a water level monitoring device with a recording function, which relates to the technical field of water level monitoring, and comprises a bracket fixed in a water well, the bracket being slidably connected to a sliding seat, one end of the sliding seat being connected to the bracket through a tension spring, the other end of the sliding seat being connected to a pull rope, the sliding seat being connected to a marking rod capable of marking the water level on a paper strip; the bracket being rotatably connected to a rope-collecting wheel, the pull rope being wound around the rope-collecting wheel, the bracket being slidably connected to a floating rod capable of floating up due to the buoyancy of water, and the floating rod being capable of driving the rope-collecting wheel to rotate. The device is easy to install and has a reliable structure, and can realize the automatic recording function of the water level change within a period of time according to the height of the water level, thereby realizing the monitoring of the groundwater level.

Description

Technical Field

[0001] The invention relates to the technical field of water level monitoring, and in particular to a water level monitoring device with a recording function. Background Art

[0002] Groundwater resources are more complex than surface water resources. The environmental conditions that cause groundwater changes and the patterns of groundwater migration cannot be directly observed. Especially in some water-related projects, groundwater characteristics are often the key factors restricting the feasibility and normal operation of the project. Therefore, it is very necessary and important to accurately obtain groundwater level information and the dynamic changes of water levels.

[0003] Due to the need for long-term monitoring, devices such as electronic level meters are easily corroded due to long-term immersion in water, resulting in distortion of monitoring data. In addition, groundwater is usually fluid, and electronic level meters usually use air pressure difference or ultrasonic waves for detection. The flowing groundwater interferes with the detection signal, which can easily cause deviations in the detection data.

[0004] After searching, the patent with announcement number CN 115435205B discloses a groundwater level monitoring device, including a winch and a monitoring instrument body, the protective mechanism includes a connecting block, a protective block, a base plate and a first adjusting component, the connecting block is arranged on the connecting rope of the winch, the protective block is arranged on the connecting block, a placement groove is opened on the protective block, and the end of the connecting block away from the winch is located in the placement groove, and the monitoring instrument body is arranged on the connecting block located in the placement groove; the base plate is arranged on the protective block through the first adjusting component and can cover the placement groove.

[0005] The above patent also has the following problems: although it can realize the monitoring of groundwater level and has a good protection effect on the monitoring structure, it cannot record the changes in groundwater level within a time period and cannot reflect the changes in groundwater level in time. Summary of the invention

[0006] In order to solve the above problems existing in the prior art, a water level monitoring device with a recording function is provided.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] The present invention proposes a water level monitoring device with a recording function, comprising a bracket fixed in a water well, wherein the bracket is slidably connected to a sliding seat, one end of the sliding seat is connected to the bracket through a tension spring, the other end of the sliding seat is connected to a pull rope, and the sliding seat is connected to a marking rod which can mark the water level on a paper strip; the bracket is rotatably connected to a rope-collecting wheel, the pull rope is wound around the rope-collecting wheel, the bracket is slidably connected to a floating rod which can float up due to the buoyancy of water, and the floating rod can drive the rope-collecting wheel to rotate.

[0009] Preferably, the rope collecting wheel is coaxially fixedly connected with a large gear, the bracket is rotatably connected with a small gear, and the two sides of the small gear are respectively meshed with the large gear and the floating rod.

[0010] Preferably, the bracket is fixedly connected to a support plate, the support plate is rotatably connected to a paper strip tube wound with a paper strip, and the support plate is rotatably connected to a winding roller for winding up the paper strip.

[0011] Preferably, the paper strip is located below the marking rod, and the support plate is fixedly connected with a pressing plate that can press the paper strip.

[0012] Preferably, the marking rod is slidably connected to the slide seat, the marking rod is connected to the slide seat via a first spring, the bracket is slidably connected to a magnetic plate that can attract the marking rod, and the magnetic plate is connected to the bracket via a second spring.

[0013] Preferably, the bracket is rotatably connected to a rotating shaft, the rotating shaft is connected to an intermediate shaft through a first one-way bearing, the intermediate shaft is connected to an end cam through a second one-way bearing, and when the end cam rotates, the magnetic plate can be driven to rise, and the rotating shaft can drive the winding roller to rotate.

[0014] Preferably, the first one-way bearing and the second one-way bearing are arranged in opposite directions, the intermediate shaft is connected with a coil spring, and the other end of the coil spring is connected to the bracket.

[0015] Preferably, the bracket is fixedly connected to a water tank, a float is slidably connected inside the water tank, the rotating shaft is rotatably connected to the water tank, the rotating shaft is provided with a spiral groove, and the float is connected to a sliding rod slidably arranged in the spiral groove.

[0016] Preferably, the slide rod and the float are slidably connected, the slide rod is connected to the float through a third spring, the slide rod is provided with a groove, and the float is connected to a card ball that can slide into the groove through a fourth spring; the upper and lower ends of the water tank are respectively connected to an upper magnet and a lower magnet that both have an attractive effect on the slide rod, and the elastic force of the fourth spring is greater than the elastic force of the third spring.

[0017] Preferably, the bracket is slidably connected to a water box, the end face cam is provided with a slot, the water box is fixedly connected to a clamping rod that can slide into the slot, and the water box is connected to the bracket through a gas spring; the water tank is provided with a water outlet with an adjustable opening size, the water box is located below the water outlet, the water box is slidably connected to a bottom plate, and the bracket is fixedly connected to an upper wedge block and a lower wedge block that both cooperate with the bottom plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present application is provided with a floating rod, which can float upward due to the buoyancy of water. The floating rod can drive the rope-collecting wheel to rotate through the large and small gear transmission mechanisms. The large and small gear transmission mechanisms can realize the movement of the floating rod over a larger distance while the rope-collecting wheel rotates at a smaller angle, thereby effectively reducing the space occupied by the device, thereby realizing the adjustment of the position of the marking rod. When the magnetic plate moves upward, the magnetic plate can drive the marking rod to descend, so that the marking rod leaves a corresponding mark on the paper strip. The installation is convenient and the structure is reliable. According to the height of the water level, the automatic recording function of the water level change within a period of time can be realized, thereby realizing the monitoring of the groundwater level.

[0020] 2. The present application is provided with a water tank. As the water level in the water tank changes, the float can drive the rotating shaft to rotate. Under the action of the one-way bearing, the coil spring can store force. Under the action of the clamping rod, the end cam cannot rotate, and the magnetic plate will not move. As the water box is filled with water, when the clamping rod is disengaged from the clamping slot, the coil spring drives the end cam to rotate, drives the magnetic plate to rise, and thus drives the marking rod to descend, realizing the marking work on the paper strip. The marking rod can be automatically lowered at fixed intervals without the need for additional power source or complex control. It adopts a purely mechanical method, has a more reliable structure, is easy to install, has a low cost, and is convenient to maintain.

[0021] 3. The present application is provided with a gas spring. As the water box collects water, when the clamping rod is disengaged from the clamping slot, the bottom plate and the lower wedge block come into contact, which can drive the bottom plate to open, thereby realizing automatic water discharge from the water box. By utilizing the slow rebound characteristic of the gas spring, the bottom plate can be opened for a sufficient time to facilitate water discharge. When the water box is reset, the upper wedge block drives the bottom plate to reset, thereby realizing the closure of the bottom plate, thereby facilitating a new round of water collection. The water level changes can be repeatedly recorded, and the water level changes over a sufficiently long period of time can be recorded. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is an overall stereogram of the present invention;

[0024] Figure 2 It is the overall front view of the present invention;

[0025] Figure 3 yes Figure 2 A magnified view of the structure of part A;

[0026] Figure 4 yes Figure 2 A magnified view of the structure of part B;

[0027] Figure 5 yes Figure 2 A cross-sectional view of the structure of the intermediate shaft;

[0028] Figure 6 yes Figure 2 A three-dimensional diagram of the structure of the middle support plate;

[0029] Figure 7 yes Figure 2 The cross-sectional view of the structure of the middle marker rod;

[0030] Figure 8 yes Figure 2 Stereoscopic diagram of the central shaft structure;

[0031] Fig. 9 yes Figure 2 The cam structure of the middle end face is three-dimensional Figure 1 ;

[0032] Fig.10 yes Figure 2 The cam structure of the middle end face is three-dimensional Figure 2 ;

[0033] Fig.11 yes Figure 2 The main view of the structure of the middle support plate;

[0034] Fig.12 It is a schematic diagram of recording water level changes in the present invention.

[0035] Description of reference numerals:

[0036] 1 water well; 11 upper wedge; 12 lower wedge; 2 bracket; 21 marking rod; 22 floating rod; 23 rope pulley; 24 slide seat; 25 tension spring; 3 water tank; 31 upper magnet; 32 rotating shaft; 33 lower magnet; 34 float; 35 card ball; 36 slide rod; 37 water outlet; 4 end face cam; 41 card slot; 42 first one-way bearing; 43 winding spring; 44 intermediate shaft; 45 second one-way bearing; 5 support plate; 51 paper strip; 52 magnetic plate; 53 winding roller; 54 paper strip tube; 55 pressure plate; 6 water box; 61 gas spring; 62 bottom plate. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] like Figure 1-Figure 12As shown, this embodiment proposes a water level monitoring device with a recording function, including a bracket 2 fixed in a water well 1. The bracket 2 can be fixed to the inside of the water well 1 by means of bolts. When monitoring is required, it is only necessary to complete the installation of the bracket 2 to achieve the installation of the entire device. The use of bolts also facilitates the disassembly of the entire device.

[0039] The bracket 2 is slidably connected to a slide 24, which can only slide in the horizontal direction. The right end of the slide 24 is connected to the bracket 2 through a tension spring 25, and the left end of the slide 24 is connected to a pull rope, which can pull the slide 24 to move in the horizontal direction. At this time, the tension spring 25 is stretched, and the tension spring 25 is used for resetting the slide 24. The tension spring 25 can drive the slide 24 to slide to the right.

[0040] The slide 24 is connected to a marking rod 21 which can mark the water level on the paper strip 51. The paper strip 51 can be waterproof. The slide 24 can drive the marking rod 21 to move, so that it can move along the width of the paper strip 51. According to the change of the water level, the marking rod 21 can make corresponding records on the paper strip 51 to realize the recording function of the water level change.

[0041] The bracket 2 is rotatably connected to a rope collecting wheel 23, and the pull rope is wound around the rope collecting wheel 23. The bracket 2 is slidably connected to a floating rod 22 that can float due to the buoyancy of water. When the floating rod 22 moves, the floating rod 22 can drive the rope collecting wheel 23 to rotate, and the pull rope can drive the slide 24 to move, so that the marking rod 21 marks the corresponding position of the paper strip 51.

[0042] The rope collecting wheel 23 is coaxially fixedly connected to a large gear, and the bracket 2 is rotatably connected to a small gear. The two sides of the small gear are respectively meshed with the large gear and the floating rod 22. The floating rod 22 drives the small gear to rotate, and the small gear drives the rope collecting wheel 23 to rotate through the large gear. In this way, the floating rod 22 can move a larger distance, while the rope collecting wheel 23 rotates a smaller angle, and the water level recording function can be achieved without an overly wide paper strip 51.

[0043] The bracket 2 is fixedly connected to a support plate 5, and the support plate 5 is arranged in a horizontal direction. The support plate 5 is rotatably connected to a paper strip tube 54 wrapped with a paper strip 51, and the support plate 5 is rotatably connected to a winding roller 53 for winding up the paper strip 51. When the winding roller 53 rotates, it can drive the paper strip 51 to be wound around the winding roller 53, so as to facilitate the subsequent recording of the water level. The winding roller 53 and the paper strip tube 54 are both connected to an anti-reversal mechanism to prevent them from reversing.

[0044] The paper strip 51 is located below the marking rod 21, and the support plate 5 is fixedly connected with a pressure plate 55 that can press the paper strip 51. Several pressure plates 55 can be provided according to actual needs. Under the action of the pressure plate 55, the paper strip 51 can be pressed onto the support plate 5, thereby facilitating the marking work of the marking rod 21.

[0045] The marking rod 21 is slidably connected to the slide seat 24, and the marking rod 21 can only slide in the vertical direction. The marking rod 21 is connected to the slide seat 24 through a first spring. The bracket 2 is slidably connected with a magnetic plate 52 that can attract the marking rod 21. The magnetic plate 52 is connected to the bracket 2 through a second spring. The magnetic force of the magnetic plate 52 is greater than the elastic force of the first spring. Therefore, the magnetic plate 52 can attract the marking rod 21 to overcome the elastic force of the first spring and move downward, thereby realizing marking on the paper strip 51.

[0046] The upper end of the first spring is connected to the slide 24, and the lower end of the first spring is connected to the marking rod 21. In the initial state, under the elastic force of the first spring, a gap is left between the marking rod 21 and the paper strip 51. The upper end of the second spring is connected to the bracket 2, and the lower end of the second spring is connected to the magnetic plate 52. Under the elastic force of the second spring, a sufficient gap is left between the magnetic plate 52 and the marking rod 21, and the gap prevents the magnetic plate 52 from attracting the marking rod 21.

[0047] The bracket 2 is rotatably connected to the rotating shaft 32, the rotating shaft 32 is connected to the intermediate shaft 44 through the first one-way bearing 42, the intermediate shaft 44 is connected to the end face cam 4 through the second one-way bearing 45, the magnetic plate 52 is arranged above the end face cam 4 and contacts with the end face cam 4, when the end face cam 4 rotates, it can drive the magnetic plate 52 to rise, and the magnetic plate 52 drives the marking rod 21 to descend, so as to realize the marking work.

[0048] A first bevel gear is fixedly sleeved on the rotating shaft 32, and the winding roller 53 is fixedly connected to the second bevel gear. The first bevel gear and the second bevel gear are meshed with each other. The rotating shaft 32 can drive the winding roller 53 to rotate. The first one-way bearing 42 and the second one-way bearing 45 are arranged in opposite directions. The intermediate shaft 44 is connected to the coil spring 43, and the other end of the coil spring 43 is connected to the bracket 2.

[0049] A one-way bearing is a bearing that can rotate freely in one direction but is locked in the other direction. The rotating shaft 32 can only rotate in one direction but cannot rotate in the other direction. When the rotating shaft 32 rotates, the first one-way bearing 42 is in a locked state, and the intermediate shaft 44 can be driven to rotate at the same time. The intermediate shaft 44 rotates relative to the second one-way bearing 45, and the end cam 4 does not rotate, thereby realizing the force storage of the coil spring 43.

[0050] The bracket 2 is fixedly connected to the water tank 3, and the water tank 3 is fixedly connected to the water well 1 by bolts. A float 34 is slidably connected in the water tank 3. The rotating shaft 32 is rotatably connected to the water tank 3. The rotating shaft 32 is provided with a spiral groove. The float 34 is connected to a slide rod 36 slidably set in the spiral groove. When the float 34 drives the slide rod 36 to descend, the slide rod 36 slides in the spiral groove, which can drive the rotating shaft 32 to rotate.

[0051] The slide bar 36 and the float 34 are slidably connected. The slide bar 36 can only slide in the horizontal direction. The slide bar 36 is connected to the float 34 through a third spring. The third spring is sleeved on the slide bar 36. The left end of the third spring is connected to the slide bar 36, and the right end is connected to the float 34. Under the elastic force of the third spring, the slide bar 36 can slide into the spiral groove.

[0052] The slide rod 36 is provided with a groove, and the float 34 is connected to a locking ball 35 which can slide into the groove through a fourth spring. The locking ball 35 and the float 34 are slidably connected, and the locking ball 35 can only slide in the vertical direction. The upper end of the fourth spring is connected to the float 34, and the lower end is connected to the locking ball 35. Under the elastic force of the fourth spring, the locking ball 35 can slide into the groove.

[0053] The upper and lower ends of the water tank 3 are respectively connected to an upper magnet 31 and a lower magnet 33, both of which have an attractive effect on the slide bar 36. The elastic force of the fourth spring is greater than the elastic force of the third spring, and the magnetic force of the lower magnet 33 is greater than the elastic force of the third spring. When the float 34 moves to the side of the lower magnet 33, the lower magnet 33 can drive the slide bar 36 to move out of the spiral groove, so that the third spring is compressed.

[0054] The magnetic force of the upper magnet 31 is greater than the elastic force of the fourth spring. When the float 34 moves to one side of the upper magnet 31, the upper magnet 31 can drive the slide bar 36 to slide into the spiral groove. The magnetic force of the upper magnet 31 can drive the slide bar 36 to move. At this time, the locking ball 35 can move out of the groove, thereby releasing the limit on the slide bar 36.

[0055] The bracket 2 is slidably connected to a water box 6, which can only slide in the vertical direction. The end cam 4 is provided with a slot 41, and the water box 6 is fixedly connected to a lever that can slide into the slot 41. The water box 6 is connected to the bracket 2 through a gas spring 61. Under the elastic force of the gas spring 61, the lever slides into the slot 41. At this time, due to the limitation of the lever, the end cam 4 cannot rotate.

[0056] The water tank 3 is provided with a water outlet 37 with an adjustable opening size. The water flow rate in the water tank 3 can be adjusted by adjusting the opening size of the water outlet 37. The water box 6 is located below the water outlet 37, and the water in the water tank 6 can drip into the water box 6 through the water outlet 37.

[0057] The water box 6 is slidably connected to a bottom plate 62 that moves horizontally, and the bracket 2 is fixedly connected to an upper wedge block 11 and a lower wedge block 12 that both cooperate with the bottom plate 62. When the bottom plate 62 moves horizontally, the bottom of the water box 6 can be closed and opened. When the water box 6 descends to the bottom plate 62 and contacts the lower wedge block 12, the lower wedge block 12 can drive the bottom plate 62 to move, so that the bottom of the water box 6 is opened to discharge water.

[0058] Taking advantage of the slow rebound characteristic of the gas spring 61, the gas spring 61 can drive the water box 6 to slowly reset, so that the bottom plate 62 can be opened for a sufficient time to facilitate water discharge. When the water box 6 is reset, the upper wedge block 11 drives the bottom plate 62 to reset, thereby closing the bottom plate 62, thereby facilitating a new round of water collection work, and realizing repeated recording of water level changes, and can record water level changes for a sufficiently long time.

[0059] A method for using a water level monitoring device with a recording function, using the above-mentioned water level monitoring device with a recording function, comprises the following steps:

[0060] S1: Fix the bracket 2 above the well 1 with bolts, the float rod 22 floats up and down due to the change of the water level in the well 1, the float rod 22 drives the rope wheel 23 to rotate, the rope wheel 23 drives the slide 24 to move horizontally through the pull rope, and the slide 24 drives the marking rod 21 to move in the width direction of the paper strip 51;

[0061] S2: The water in the water tank 3 drips into the water box 6 through the water outlet 37. As the water level in the water tank 3 drops, the float 34 drives the slide bar 36 to drop, and the slide bar 36 slides in the spiral groove, thereby driving the rotating shaft 32 to rotate, and the rotating shaft 32 drives the winding roller 53 to rotate, and the winding roller 53 drives the paper strip 51 to move, thereby realizing the winding work of the paper strip 51;

[0062] At the same time, the rotating shaft 32 drives the intermediate shaft 44 to rotate through the first one-way bearing 42. Under the action of the second one-way bearing 45, the intermediate shaft 44 rotates relative to the end face cam 4. Under the limiting action of the clamping rod, the end face cam 4 does not rotate at this time, so that the coil spring 43 accumulates force. At the same time, the water in the water tank 3 drips, and the water box 6 drives the clamping rod to descend.

[0063] S3: When the latching rod moves downward out of the latching slot 41, the limit on the end cam 4 is released. At this time, the coil spring 43 drives the central shaft 44 to reverse, and the central shaft 44 drives the end cam 4 to rotate through the second one-way bearing 42. Under the action of the first one-way bearing 42, the intermediate shaft 44 rotates relative to the rotating shaft 32, and the end cam 4 drives the magnetic plate 52 to rise, and the magnetic plate 52 drives the marking rod 21 to descend, and the marking rod 21 marks on the paper strip 51;

[0064] At the same time, the water box 6 descends to the bottom plate 62 and contacts the lower wedge block 12, and the lower wedge block 12 drives the bottom plate 62 to move, so that the bottom of the water box 6 is opened to discharge water, and then under the action of the gas spring 61, the water box 6 is reset, and the upper wedge block 11 drives the bottom plate 62 to reset, so that the bottom plate 62 is closed;

[0065] S4: When the water level in the water tank 3 drops to the point where the float 34 moves to the side of the lower magnet 33, the lower magnet 33 drives the slide bar 36 to move out of the spiral groove, and the locking ball 35 slides into the groove of the slide bar 36 to limit the slide bar 36. After water is added to the water tank 3 again, the water flow drives the float 34 to rise. When it moves to the side of the upper magnet 31, the upper magnet 31 drives the slide bar 36 to slide into the spiral groove, so that the locking ball 35 slides out of the groove of the slide bar 36.

[0066] In S3, by reasonably adjusting the length of the clamping rod, the clamping rod will move out of the clamping slot 41 only when the water box 6 drops a specified length, thereby releasing the limit on the end face cam 4. At this time, the degree of force stored in the coil spring 43 can make the end face cam 4 rotate a full number of circles, so that the end face cam 4 can return to the initial state each time after rotation.

[0067] Although the 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water level monitoring device with a recording function, comprising a bracket (2) fixed in a water well (1), characterized in that: The support (2) is slidably connected to a slide seat (24), one end of the slide seat (24) is connected to the support (2) via a tension spring (25), the other end of the slide seat (24) is connected to a pull rope, and the slide seat (24) is connected to a marking rod (21) capable of marking a water level on a paper strip (51); the support (2) is rotatably connected to a rope collecting wheel (23), the pull rope is wound around the rope collecting wheel (23), the support (2) is slidably connected to a floating rod (22) capable of floating upward due to the buoyancy of water, and the floating rod (22) can drive the rope collecting wheel (23) to rotate; The rope collecting wheel (23) is coaxially fixedly connected to a large gear, and the bracket (2) is rotatably connected to a small gear, and the two sides of the small gear are respectively meshed with the large gear and the floating rod (22); The support (2) is fixedly connected to a support plate (5), the support plate (5) is rotatably connected to a paper strip tube (54) wound with a paper strip (51), and the support plate (5) is rotatably connected to a winding roller (53) for winding up the paper strip (51); The paper strip (51) is located below the marking rod (21), and the support plate (5) is fixedly connected to a pressing plate (55) capable of pressing the paper strip (51); The marking rod (21) and the slide seat (24) are slidably connected, the marking rod (21) is connected to the slide seat (24) via a first spring, the bracket (2) is slidably connected to a magnetic plate (52) that can attract the marking rod (21), and the magnetic plate (52) is connected to the bracket (2) via a second spring; The bracket (2) is rotatably connected to a rotating shaft (32), the rotating shaft (32) is connected to an intermediate shaft (44) via a first one-way bearing (42), the intermediate shaft (44) is connected to an end face cam (4) via a second one-way bearing (45), and when the end face cam (4) rotates, the magnetic plate (52) can be driven to rise, and the rotating shaft (32) can drive the winding roller (53) to rotate; The first one-way bearing (42) and the second one-way bearing (45) are arranged in opposite directions. The intermediate shaft (44) is connected to a coil spring (43), and the other end of the coil spring (43) is connected to the bracket (2).

2. A water level monitoring device with recording function according to claim 1, characterized in that: The bracket (2) is fixedly connected to a water tank (3), a float (34) is slidably connected inside the water tank (3), the rotating shaft (32) and the water tank (3) are rotatably connected, the rotating shaft (32) is provided with a spiral groove, and the float (34) is connected to a slide rod (36) slidably arranged in the spiral groove.

3. A water level monitoring device with recording function according to claim 2, characterized in that: The slide bar (36) and the float (34) are slidably connected, the slide bar (36) is connected to the float (34) via a third spring, the slide bar (36) is provided with a groove, and the float (34) is connected to a ball (35) that can slide into the groove via a fourth spring; the upper and lower ends of the water tank (3) are respectively connected to an upper magnet (31) and a lower magnet (33) that both have an attractive effect on the slide bar (36), and the elastic force of the fourth spring is greater than the elastic force of the third spring.

4. A water level monitoring device with recording function according to claim 3, characterized in that: The bracket (2) is slidably connected to a water box (6); the end face cam (4) is provided with a slot (41); the water box (6) is fixedly connected to a slot rod that can slide into the slot (41); the water box (6) is connected to the bracket (2) via a gas spring (61); the water tank (3) is provided with a water outlet (37) with an adjustable opening size; the water box (6) is located below the water outlet (37); the water box (6) is slidably connected to a bottom plate (62); and the bracket (2) is fixedly connected to an upper wedge block (11) and a lower wedge block (12) that are both matched with the bottom plate (62).

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