Intelligent liquid level sensor and working method thereof

Abstract

The invention belongs to the technical field of liquid level sensors, particularly relates to an intelligent liquid level sensor and a working method thereof, and aims to solve the problem that a detection port is easy to block after a liquid level sensor in the prior art is used for a long time. A fixed panel is fixed at an opening in the front surface of the waterproof shell, an inwards-sunken cassette is arranged in the middle of the fixed panel, double-shaft-rod seats which are symmetrical to each other are fixed to the inner walls of the left side and the right side of the cassette respectively, and a first shaft rod and a second shaft rod which are parallel to each other and are horizontal are fixed to the two ends of each double-shaft-rod seat respectively. When the water level in a variable range is monitored, only the waterproof shell needs to be fixed to the middle position of the water level in the range, when the liquid level is too high or too low, the touch rod can be automatically made to touch one touch alarm mechanism, and then a liquid level alarm is given out.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid level sensors, and in particular to an intelligent liquid level sensor and a working method thereof. Background Art

[0002] Liquid level sensors play a vital role in many industries. They are mainly used to monitor and control the level or height of liquids, or to monitor water levels within a certain range to ensure the continuous operation of water-using organizations. With the continuous development of industrial automation, the application of liquid level sensors is becoming more and more extensive, covering chemical, food, pharmaceutical, water treatment, energy and other fields.

[0003] After searching, it was found that the existing technology often requires at least two liquid level sensors to measure water level fluctuations within a certain range, one placed at a high position and the other placed at a low position. However, traditional liquid level sensors are easily affected by many factors during use. These sensors all have a water inlet for contact with the liquid to be measured. However, due to long-term immersion in the liquid, the water inlet is easily blocked by microorganisms or internal inclusions of the liquid, which in turn affects the accuracy of liquid level detection. Therefore, we propose a new type of liquid level sensor. Summary of the Invention

[0004] To solve the technical problem that the liquid level sensor in the prior art is prone to clogging of the detection port after long-term use, the present invention adopts the following technical solution:

[0005] A liquid level intelligent sensor, comprising a waterproof housing with an opening facing the front and an overall rectangular box structure, a fixed panel fixed to the front opening of the waterproof housing, an inwardly recessed dark box provided in the middle of the fixed panel, symmetrical double-axis rod seats fixed to the inner walls on the left and right sides of the dark box, and a mutually parallel and horizontal shaft rod 1 and shaft rod 2 fixed to the two ends of the double-axis rod seat, the axis of the shaft rod 1 being parallel to the fixed panel, and a mutually meshing intermediate gear and a half gear fixed to the circumferential outer walls of the shaft rod 1 and the shaft rod 2, respectively, the half gear being away from the intermediate gear. A mother tube is fixed on one side of the wheel, and the axis of the mother tube passes through the center of the middle gear. An inner slide rod is inserted into the end of the mother tube away from the half gear, and a float is fixed to the end of the inner slide rod away from the half gear; the top and bottom ends of the dark box are respectively embedded with coaxial sealed bearings, and the same trigger rod is slidably connected between the two sealed bearings, and the side of the trigger rod is provided with a rack that meshes with the middle gear; the top inner wall and the bottom inner wall of the waterproof shell are respectively provided with trigger alarm mechanisms with the same structure and symmetrical to each other, and the trigger alarm mechanism includes reset springs located at the upper and lower ends of the trigger rod.

[0006] A further configuration of the present invention is that the diameter of the half gear is larger than the diameter of the intermediate gear, and the side of the mother tube is provided with a flat section passing through both ends, and the middle of the flat section is provided with a strip hole consistent with the extension direction of the mother tube, and a shift screw is fixed to the end of the circumferential outer wall of the inner sliding rod away from the float, and the shift screw can slide freely in the strip hole, and the end of the shift screw is threaded with a shift block, and the diameter of the shift block is larger than the aperture of the strip hole, and the surface of the flat section is reserved with a scale.

[0007] A further arrangement of the present invention is that a fixing stud is fixed to one end of the inner slide rod close to the float, and an internal threaded tube compatible with the fixing stud is embedded in the end of the float close to the inner slide rod; the overall structure of the dark box is a rectangular box-shaped structure with the opening facing the front, and a wear-resistant slide is fixed to the middle of the bottom inner wall of the dark box, and a guide groove is opened near the middle of the circumferential outer wall of the trigger rod; the wear-resistant slide extends horizontally into the guide groove and is slidably connected in the guide groove. The guide groove is set to prevent the trigger rod from twisting during reciprocating sliding, which in turn causes the rack to disengage from the intermediate gear.

[0008] A further configuration of the present invention is that fixed suction cups are fixed near the four corners on the side of the waterproof shell away from the fixed panel, and an inspection port is reserved near the middle of the side of the waterproof shell, and a sealed side cover is hinged at the opening of the inspection port; the trigger alarm mechanism also includes alarm one and alarm two fixed to the outer wall of the container for the liquid to be monitored, and the positions of alarm one and alarm two correspond to the low alarm position and high alarm position of the liquid level respectively, and the fixed positions of alarm one and alarm two are adjustable.

[0009] The present invention is further configured in that one of the trigger alarm mechanisms includes a U-shaped holder fixed to the top inner wall of the waterproof housing near the middle, and a tilting rod is rotatably connected to the middle of the U-shaped holder, the axis of the triggering rod is on the swinging surface of the tilting rod, and one end of the tilting rod close to the reset spring extends to between the end of the reset spring and the end of the triggering rod and is always located between the two, the end of the reset spring close to the triggering rod is fixed with a wear-resistant top plate, and the end of the tilting rod away from the reset spring is fixed with a cross bar, the side of the tilting rod close to the end of the U-shaped holder is interspersed with a fulcrum rotating rod, the fulcrum rotating rod and the cross bar are parallel to each other; the distance between the cross bar and the fulcrum rotating rod is less than the distance between the other end and the fulcrum rotating rod, the end of the tilting rod close to the reset spring is the active force-applying end, and the tilting rod close to the cross bar One end is a passive force-applying end; a fixing plate is fixed to the top inner wall of the waterproof shell near the oblique upper part of the cross bar, and the fixing plate is a rectangular structure, and round rods vertically downward and parallel to each other are fixed to the lower surface of the fixing plate near the four corners, and the same transmission slider is slidably connected between the four round rods, and two bar frames slidingly sleeved on the cross bar are fixed on the side of the transmission slider close to the cross bar, and a magnet 1 is fixed on the side of the transmission slider away from the tilting rod; through the provision of the tilting rod and the transmission slider sliding in linkage with it, during monitoring, when the trigger rod has not squeezed the end of the tilting rod, that is, when the float has not reached the alarm liquid level, at this time, under the pressing action of the reset spring, the transmission slider and the magnet 1 fixed on its side are in a position close to the fixed plate.

[0010] A further configuration of the present invention is that a waterproof box is fixed to the top inner wall of the waterproof housing near the fixed plate, and the waterproof box is made of a transparent acrylic plate material, the waterproof box is a rectangular structure with a cavity inside, and a guide rod extending vertically downward is fixed to the middle of the top of the waterproof box, and a C-shaped slider is slidably connected to the side of the outer wall of the guide rod close to magnet one, a magnet two is fixed to the side of the C-shaped slider close to magnet one, and the magnetic poles of the magnet two and the side close to magnet one are opposite, that is, the up and down sliding of the magnet one can drive the magnet two to slide up and down; the outer wall of the magnet two A buffer spring is fixed to the wall near the bottom end, and a contact slider 1 is fixed to the end of the buffer spring away from the magnet 2; a wedge-shaped slide is fixed to the end of the inner side of the waterproof box near the guide rod, and signal lines are electrically connected to the wedge-shaped slide and the contact slider 1, and the signal line connects the contact slider 1 and the wedge-shaped slide in series in the corresponding alarm circuit; so that when in use, when the touch alarm mechanism located at the top is touched, the alarm 2 near the top can be automatically touched, and when the touch alarm mechanism located at the bottom is touched, the alarm 1 at the bottom can be automatically touched to sound an alarm.

[0011] A further configuration of the present invention is that the circumferential outer wall of the guide rod is reserved with anti-torsion ribs, and the opening size of the C-shaped slider is adapted to the width of the anti-torsion ribs; the back of the waterproof shell is provided with mounting holes at the wire outlet holes of the waterproof box near the upper and lower ends, and sealing plugs are provided in the mounting holes, and the signal lines pass through the wire outlet holes and sealing plugs of the waterproof box in turn and are connected to the corresponding alarm one and alarm two.

[0012] A further configuration of the present invention is that the overall transfer slider is an I-shaped slider structure, and the upper surface of the transfer slider is provided with vertical guide sliding holes near the four corners and passing through the upper and lower ends, and the round rod is slidably inserted into the corresponding guide sliding holes; the guide sliding holes are embedded with wear-resistant sliding tubes, which can increase the rust resistance of the device and prevent the surface of the round rod from being modified due to being in a humid environment for a long time, thereby affecting the sensitivity of the device.

[0013] A further configuration of the present invention is that a support column extending toward the transfer slider is fixed in the middle of the fixed plate. Combined with the presence of a reset spring, it can ensure that when there is no contact with the trigger rod, the transfer slider remains stationary and will not move in response to the fluctuations of the liquid, thereby maintaining the stability of the device.

[0014] A working method of a liquid level intelligent sensor comprises the following steps:

[0015] S1: When the device is monitoring the water level, first fix the waterproof housing in the middle of the variable range, which can be the inner wall of the container or the middle of the container. Then adjust the extension length of the inner slide rod according to the size of the monitoring range. The longer the extension length of the inner slide rod, the larger the monitoring range.

[0016] S2: Then, the alarm device 1 and the alarm device 2 for alarming are fixed to the outer wall of the container respectively, and the alarm device 1 is fixed to the low water level alarm position, and the alarm device 2 is fixed to the high water level alarm position;

[0017] S3: When the liquid level in the container continues to rise or fall, the change in liquid level will drive the float to move up and down, and then drive the trigger rod to move up and down under the action of the inner slide rod and the main pipe. When the liquid level is too high or too low to the set position, it will automatically cause the trigger rod to touch the corresponding trigger alarm mechanism; that is, it will indirectly drive the contact slider 1 to contact the wedge slide, and then trigger the corresponding alarm.

[0018] The beneficial effects of the present invention are:

[0019] 1. By setting up the half gear and the main pipe fixed on its circumferential outer wall and other components, when monitoring the water level in a variable range, it is only necessary to fix the waterproof shell in the middle position of the range water level. At this time, the change of the liquid level can drive the float to move up and down, and then drive the trigger rod up and down under the action of the inner slide rod and the main pipe. When the liquid level is too high or too low, it can automatically cause the trigger rod to touch one of the trigger alarm mechanisms, and then issue a liquid level alarm.

[0020] 2. By setting the toggle screw and the toggle block screwed on the toggle screw, the extension length of the inner slide rod can be adjusted according to the span of the area to be monitored. The longer the extension length of the inner slide rod is, the larger the monitored liquid level span is.

[0021] 3. By setting alarm 1 and alarm 2 on the outer wall of the container and corresponding to the alarm liquid level, when the internal liquid level sensor sounds an alarm, the specific position of the liquid level in the container can be more clearly known, so that the operator can quickly take corresponding countermeasures.

[0022] 4. By such a setting, double protection can be formed for the contact space between the contact slider and the wedge-shaped slide, thereby more effectively preventing the device from being invaded by internal liquid, thereby increasing the service life of the device and making it adaptable to liquid level monitoring in more scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an intelligent liquid level sensor proposed by the present invention;

[0024] Figure 2 This is a structural diagram of the fixed side of a liquid level intelligent sensor proposed by the present invention;

[0025] Figure 3 This is a front view of a liquid level intelligent sensor proposed by the present invention;

[0026] Figure 4 A liquid level intelligent sensor proposed by the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA;

[0027] Figure 5 This is an assembly diagram of a dark box and a trigger rod in a liquid level intelligent sensor proposed by the present invention;

[0028] Figure 6 This is an exploded view of the float and inner slide rod in the intelligent liquid level sensor proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of a conversion mechanism in a liquid level intelligent sensor proposed by the present invention;

[0030] Figure 8This is a schematic diagram of the internal structure of a waterproof box in a liquid level intelligent sensor proposed by the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of a transfer slider in a liquid level intelligent sensor proposed by the present invention;

[0032] Figure 10 This is a schematic diagram of the three-dimensional structure of a tilting rod in a liquid level intelligent sensor proposed by the present invention;

[0033] Figure 11 This is a schematic diagram of the three-dimensional structure of a trigger rod in a liquid level intelligent sensor proposed by the present invention.

[0034] Figure: 1, waterproof housing; 101, sealing plug; 2, fixed panel; 3, toggle block; 4, inner slide; 401, fixing stud; 402, toggle screw; 5, float; 501, internal threaded pipe; 6, flat section; 7, strip hole; 8, mother pipe; 9, half gear; 10, dual-axis rod seat; 11, dark box; 12, sealed side cover; 13, alarm 1; 14, signal line; 15, fixed suction cup; 16, alarm 2; 17, trigger rod; 171, Sealed bearing; 172, rack; 173, guide groove; 18, intermediate gear; 19, waterproof box; 20, transfer slider; 2001, bar frame; 2002, guide slide hole; 21, U-shaped holder; 22, tilt rod; 2201, cross bar; 2202, fulcrum rotating rod; 23, return spring; 24, magnet 1; 25, magnet 2; 26, guide rod; 27, C-shaped slider; 28, contact slider 1; 29, wedge-shaped slide; 30, fixed plate. DETAILED DESCRIPTION

[0035] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In this embodiment, refer to Figures 1-11, a liquid level intelligent sensor, comprising a waterproof shell 1 with an opening facing the front and a rectangular box structure as a whole, a fixed panel 2 is fixed at the front opening of the waterproof shell 1, and an inwardly recessed dark box 11 is provided in the middle of the fixed panel 2, and symmetrical double-axis rod seats 10 are fixed to the inner walls on the left and right sides of the dark box 11, and two ends of the double-axis rod seat 10 are respectively fixed with mutually parallel and horizontal shaft rods 1 and 2, the axis line of the shaft rod 1 is parallel to the fixed panel 2, and the circumferential outer walls of the shaft rod 1 and the shaft rod 2 are respectively fixed with an intermediate gear 18 and a half gear 9 that mesh with each other, a mother tube 8 is fixed on the side of the half gear 9 away from the intermediate gear 18, and the axis line of the mother tube 8 passes through the center of the circle of the intermediate gear 18, an inner slide rod 4 is inserted at the end of the mother tube 8 away from the half gear 9, and a float 5 is fixed at the end of the inner slide rod 4 away from the half gear 9; the top and bottom ends of the dark box 11 are respectively embedded There are coaxial sealed bearings 171, and the same trigger rod 17 is slidably connected between the two sealed bearings 171. The side of the trigger rod 17 is provided with a rack 172 that meshes with the intermediate gear 18; the top inner wall and the bottom inner wall of the waterproof housing 1 are respectively provided with trigger alarm mechanisms with the same structure and symmetrical to each other, and the trigger alarm mechanism includes reset springs 23 located at the upper and lower ends of the trigger rod 17; through the provided half gear 9 and the mother tube 8 fixed on its circumferential outer wall and other components, when monitoring the water level in a variable range, it is only necessary to fix the waterproof housing 1 in the middle position of the range water level. At this time, the change in liquid level can drive the float 5 to move up and down, and then drive the trigger rod 17 up and down under the action of the inner slide rod 4 and the mother tube 8. When the liquid level is too high or too low, it can automatically cause the trigger rod 17 to touch one of the trigger alarm mechanisms, and then issue a liquid level alarm.

[0037] Reference Figure 4 and Figure 6 , the diameter of the half gear 9 is larger than the diameter of the intermediate gear 18, and the side of the main tube 8 is provided with a flat section 6 running through both ends, and the middle of the flat section 6 is provided with a strip hole 7 consistent with the extension direction of the main tube 8, and the circumferential outer wall of the inner slide rod 4 is fixed with a toggle screw 402 at one end away from the float 5, and the toggle screw 402 can slide freely in the strip hole 7, and the end of the toggle screw 402 is screwed with a toggle block 3, and the diameter of the toggle block 3 is larger than the aperture of the strip hole 7, and a scale is reserved on the surface of the flat section 6; through the provided toggle screw 402 and the toggle block 3 screwed on the toggle screw 402, the extension length of the inner slide rod 4 can be adjusted according to the span of the area to be monitored. The longer the extension length of the inner slide rod 4, the larger the monitored liquid level span.

[0038] Reference Figure 4 and Figure 6, a fixing stud 401 is fixed at one end of the inner slide rod 4 near the float 5, and an internal threaded tube 501 that is compatible with the fixing stud 401 is embedded in the end of the float 5 near the inner slide rod 4; the overall structure of the dark box 11 is a rectangular box-shaped structure with the opening facing the front, and a wear-resistant slide is fixed in the middle of the bottom inner wall of the dark box 11, and a guide groove 173 is opened near the middle of the circumferential outer wall of the trigger rod 17; the wear-resistant slide extends horizontally into the guide groove 173 and is slidably connected in the guide groove 173. The guide groove 173 is set to prevent the trigger rod 17 from twisting during reciprocating sliding, which in turn causes the rack 172 to disengage from the intermediate gear 18.

[0039] Reference Figure 2 and Figure 4 , fixed suction cups 15 are fixed near the four corners of the side of the waterproof shell 1 away from the fixed panel 2, and an inspection port is reserved near the middle of the side of the waterproof shell 1, and a sealed side cover 12 is hinged at the opening of the inspection port; the trigger alarm mechanism also includes an alarm 13 and an alarm 2 16 fixed to the outer wall of the container for the liquid to be monitored, and the positions of the alarm 13 and the alarm 2 16 correspond to the low alarm position and the high alarm position of the liquid level respectively, and the fixed positions of the alarm 13 and the alarm 2 16 are adjustable; by arranging the alarm 13 and the alarm 2 16 on the outer wall of the container corresponding to the alarm liquid level, when the internal liquid level sensor sounds an alarm, the specific position of the liquid level in the container can be more clearly known, so that the operator can quickly take corresponding countermeasures.

[0040] Reference Figure 4 、 Figure 7-Figure 8The cam 2201 is fixed to the bottom of the cam 2202 and the cam 2202 is fixed to the bottom of the cam 2202. One end of 1 is the passive force-applying end; a fixing plate 30 is fixed to the top inner wall of the waterproof housing 1 near the oblique upper side of the cross bar 2201, and the fixing plate 30 is a rectangular structure, and round rods vertically downward and parallel to each other are fixed to the lower surface of the fixing plate 30 near the four corners, and the same transfer slider 20 is slidably connected between the four round rods, and two bar frames 2001 slidingly sleeved on the cross bar 2201 are fixed on the side of the transfer slider 20 close to the cross bar 2201, and a magnet 24 is fixed on the side of the transfer slider 20 away from the tilting rod 22; through the provision of the tilting rod 22 and the transfer slider 20 that slides in conjunction with it, during monitoring, when the trigger rod 17 has not squeezed the end of the tilting rod 22, that is, when the float 5 has not reached the alarm liquid level, at this time, under the pressing action of the reset spring 23, the transfer slider 20 and the magnet 24 fixed on its side are in a position close to the fixing plate 30.

[0041] Reference Figure 4 、 Figure 7-Figure 8A waterproof box 19 is fixed to the top inner wall of the waterproof housing 1 near the fixed plate 30, and the waterproof box 19 is made of a transparent acrylic plate material. The waterproof box 19 is a rectangular parallelepiped structure with a cavity inside, and a guide rod 26 extending vertically downward is fixed to the middle of the top of the waterproof box 19, and the outer wall of the guide rod 26 is slidably connected to the side of the magnet 1 24 with a C-shaped slider 27, and the side of the C-shaped slider 27 near the magnet 1 24 is fixed with a magnet 25, and the magnetic poles of the magnet 25 and the side close to the magnet 1 24 are opposite, that is, the up and down sliding of the magnet 1 24 can drive the magnet 2 25 to slide up and down; the outer wall of the magnet 2 25 is close to the bottom A buffer spring is fixed to the end thereof, and a contact slider 1 28 is fixed to the end of the buffer spring away from the magnet 2 25; a wedge-shaped slide 29 is fixed to the end of the inner side of the waterproof box 19 near the guide rod 26, and the wedge-shaped slide 29 and the contact slider 1 28 are electrically connected with a signal line 14, and the signal line 14 connects the contact slider 1 28 and the wedge-shaped slide 29 in series in the corresponding alarm circuit; so that when in use, when the touch alarm mechanism located above is touched, the alarm 2 16 near the top can be automatically touched, and when the touch alarm mechanism located below is touched, the alarm 13 at the bottom can be automatically touched to sound an alarm.

[0042] Reference Figure 5 、 Figure 8 , the circumferential outer wall of the guide rod 26 is reserved with anti-torsion ribs, and the opening size of the C-shaped slider 27 is adapted to the width of the anti-torsion ribs; the back of the waterproof housing 1 is provided with mounting holes at the wire outlet holes of the waterproof box 19 near the upper and lower ends, and sealing plugs 101 are provided in the mounting holes. The signal line 14 passes through the wire outlet holes and sealing plugs 101 of the waterproof box 19 in turn and is connected to the corresponding alarm 13 and alarm 2 16; through such an arrangement, double protection can be formed for the contact space between the contact slider 1 28 and the wedge-shaped slide 29, thereby more effectively preventing the device from being invaded by internal liquid, thereby improving the service life of the device and making it adaptable to liquid level monitoring in more scenarios.

[0043] Reference Figure 7 and Figure 9 The overall structure of the transfer slider 20 is an I-shaped slider, and the upper surface of the transfer slider 20 is provided with vertical guide sliding holes 2002 that pass through the upper and lower ends near the four corners. The round rod is slidably inserted into the corresponding guide sliding holes 2002; the guide sliding holes 2002 are embedded with wear-resistant sliding tubes, which can increase the rust resistance of the device and prevent the surface of the round rod from being modified due to being in a humid environment for a long time, thereby affecting the sensitivity of the device.

[0044] Reference Figure 7A support column extending toward the transfer slider 20 is fixed in the middle of the fixed plate 30. Combined with the presence of the reset spring 23, it can ensure that when there is no contact with the trigger rod 17, the transfer slider 20 remains stationary and will not move in response to the fluctuations of the liquid, thereby maintaining the stability of the device.

[0045] A working method of a liquid level intelligent sensor comprises the following steps:

[0046] S1: When the device is performing water level monitoring, the waterproof housing 1 is first fixed in the middle of the variable range, which can be the inner wall of the container or the middle of the container. Then, the extension length of the inner slide bar 4 is adjusted according to the size of the monitoring range. The longer the extension length of the inner slide bar 4 is, the larger the monitoring range is.

[0047] S2: Then, the alarm 13 and the alarm 2 16 are fixed to the outer wall of the container respectively, and the alarm 13 is fixed to the low water level alarm position, and the alarm 2 16 is fixed to the high water level alarm position;

[0048] S3: When the liquid level in the container continues to rise or fall, the change in liquid level will drive the float 5 to move up and down, and then drive the trigger rod 17 to move up and down under the action of the inner slide rod 4 and the main tube 8. When the liquid level is too high or too low to the set position, the trigger rod 17 will automatically trigger the corresponding trigger alarm mechanism; that is, it will indirectly drive the contact slider 28 to contact the wedge slide 29, and then trigger the corresponding alarm.

[0049] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A liquid level intelligent sensor, comprising a waterproof housing (1) with an opening facing the front and an overall rectangular box structure, a fixed panel (2) fixed at the front opening of the waterproof housing (1), and an inwardly recessed dark box (11) provided in the middle of the fixed panel (2), characterized in that: The inner walls on the left and right sides of the dark box (11) are respectively fixed with symmetrical double-axis rod seats (10), and the two ends of the double-axis rod seat (10) are respectively fixed with parallel and horizontal axis rods 1 and 2, the axis center line of the axis rod 1 is parallel to the fixed panel (2), and the circumferential outer walls of the axis rod 1 and the axis rod 2 are respectively fixed with an intermediate gear (18) and a half gear (9) that mesh with each other, and a mother tube (8) is fixed on the side of the half gear (9) away from the intermediate gear (18), and the axis center line of the mother tube (8) passes through the center of the circle of the intermediate gear (18), and the end of the mother tube (8) away from the half gear (9) is plugged with An inner slide rod (4), wherein a float (5) is fixed to one end of the inner slide rod (4) away from the half gear (9); the top and bottom ends of the dark box (11) are respectively embedded with coaxial sealed bearings (171), and a same trigger rod (17) is slidably connected between the two sealed bearings (171), and the side of the trigger rod (17) is provided with a rack (172) that meshes with the intermediate gear (18); the top inner wall and the bottom inner wall of the waterproof housing (1) are respectively provided with a trigger alarm mechanism with the same structure and symmetrical to each other, and the trigger alarm mechanism includes a return spring (23) located at the upper and lower ends of the trigger rod (17).

2. The liquid level intelligent sensor according to claim 1, characterized in that: The diameter of the half gear (9) is larger than the diameter of the intermediate gear (18), and the side of the mother tube (8) is provided with a plane section (6) passing through both ends, and the middle of the plane section (6) is provided with a strip hole (7) in the same extension direction as the mother tube (8), and a shift screw (402) is fixed to the end of the circumferential outer wall of the inner slide rod (4) away from the float (5), and the shift screw (402) can slide freely in the strip hole (7), and the end of the shift screw (402) is screwed with a shift block (3), and the diameter of the shift block (3) is larger than the aperture of the strip hole (7), and a scale is reserved on the surface of the plane section (6).

3. The liquid level intelligent sensor according to claim 2, characterized in that: A fixing stud (401) is fixed to one end of the inner slide rod (4) close to the float (5), and an internal threaded tube (501) adapted to the fixing stud (401) is embedded in the end of the float (5) close to the inner slide rod (4); the overall structure of the dark box (11) is a rectangular box-shaped structure with an opening facing the front, and a wear-resistant slide is fixed to the middle of the bottom inner wall of the dark box (11), and a guide groove (173) is opened near the middle of the circumferential outer wall of the trigger rod (17); the wear-resistant slide extends horizontally into the guide groove (173) and is slidably connected in the guide groove (173).

4. The liquid level intelligent sensor according to claim 1, characterized in that: The waterproof housing (1) is fixed with fixed suction cups (15) near the four corners on a side away from the fixed panel (2), and an inspection port is reserved near the middle of the side of the waterproof housing (1), and a sealing side cover (12) is hinged at the opening of the inspection port; the trigger alarm mechanism also includes an alarm 1 (13) and an alarm 2 (16) fixed to the outer wall of the container for the liquid to be monitored, and the positions of the alarm 1 (13) and the alarm 2 (16) respectively correspond to the low alarm position and the high alarm position of the liquid level, and the fixed positions of the alarm 1 (13) and the alarm 2 (16) are adjustable.

5. The liquid level intelligent sensor according to claim 4, characterized in that: One of the trigger alarm mechanisms comprises a U-shaped holder (21) fixed to the top inner wall of the waterproof housing (1) near the middle, and the middle of the U-shaped holder (21) is rotatably connected to a tilting rod (22), the axis of the trigger rod (17) is on the swinging surface of the tilting rod (22), and the end of the tilting rod (22) close to the reset spring (23) extends to between the end of the reset spring (23) and the end of the trigger rod (17) and is always located between the two, the end of the reset spring (23) close to the trigger rod (17) is fixed with a wear-resistant top plate, and the end of the tilting rod (22) away from the reset spring (23) is fixed with a cross bar (2201), the side of the tilting rod (22) close to the end of the U-shaped holder (21) is interspersed with a fulcrum rotating rod (2202), and the fulcrum rotating rod (2202) and the cross bar (2201) are parallel to each other; the cross bar (2201) is fixed to the end of the reset spring (23) The distance from the end of the tilting rod (2202) to the fulcrum rotating rod (2202) is less than the distance from the other end to the fulcrum rotating rod (2202), the end of the tilting rod (22) close to the reset spring (23) is the active force-applying end, and the end of the tilting rod (22) close to the cross bar (2201) is the passive force-applying end; a fixing plate (30) is fixed to the top inner wall of the waterproof housing (1) near the oblique upper side of the cross bar (2201), and the fixing plate (30) is a rectangular structure, and vertical downward and mutually parallel round rods are fixed to the lower surface of the fixing plate (30) near the four corners, and the same transfer slider (20) is slidably connected between the four round rods, and two bar frames (2001) slidably sleeved on the cross bar (2201) are fixed on the side of the transfer slider (20) close to the cross bar (2201), and a magnet (24) is fixed on the side of the transfer slider (20) away from the tilting rod (22).

6. The liquid level intelligent sensor according to claim 5, characterized in that: A waterproof box (19) is fixed on the top inner wall of the waterproof housing (1) near the fixing plate (30), and the waterproof box (19) is made of a transparent acrylic plate material. The waterproof box (19) is a rectangular parallelepiped structure with a cavity therein, and a guide rod (26) extending vertically downward is fixed in the middle of the top of the waterproof box (19), and a C-shaped slider (27) is slidably connected to the outer wall of the guide rod (26) near the side of the magnet one (24), and a magnet two (25) is fixed on the side of the C-shaped slider (27) near the side of the magnet one (24), and the magnet two (2 5) The magnetic pole of the side close to the magnet one (24) is opposite; a buffer spring is fixed to the outer wall of the magnet two (25) near the bottom end, and a contact slider one (28) is fixed to the end of the buffer spring away from the magnet two (25); a wedge-shaped slide (29) is fixed to the end of the inner side of the waterproof box (19) near the guide rod (26), and the wedge-shaped slide (29) and the contact slider one (28) are electrically connected to a signal line (14), and the signal line (14) connects the contact slider one (28) and the wedge-shaped slide (29) in series in the corresponding alarm circuit.

7. The liquid level intelligent sensor according to claim 6, characterized in that: The outer circumferential wall of the guide rod (26) is provided with anti-torsion ribs, and the opening size of the C-shaped slider (27) is adapted to the width of the anti-torsion ribs; the back of the waterproof housing (1) is provided with mounting holes at the outlet holes of the waterproof box (19) at the upper and lower ends, and sealing plugs (101) are provided in the mounting holes. The signal line (14) passes through the outlet holes of the waterproof box (19) and the sealing plugs (101) in sequence and is connected to the corresponding alarm 1 (13) and alarm 2 (16).

8. The liquid level intelligent sensor according to claim 6, characterized in that: The transfer slider (20) is in the shape of an I-shaped slider as a whole, and vertical guide sliding holes (2002) are opened near the four corners on the upper surface of the transfer slider (20) and pass through the upper and lower ends. The round rod is slidably inserted into the corresponding guide sliding holes (2002); and the guide sliding holes (2002) are embedded with wear-resistant sliding tubes.

9. The liquid level intelligent sensor according to claim 8, characterized in that: A support column extending toward the transfer slider (20) is fixed in the middle of each of the fixed plates (30).

10. A method for operating a liquid level intelligent sensor, comprising the liquid level intelligent sensor according to claim 9, characterized in that: The following steps are involved: S1: When the device is performing water level monitoring, the waterproof housing (1) is first fixed at the middle position of the variable range, which can be the inner wall of the container or the middle of the container, and then the extension length of the inner slide bar (4) is adjusted according to the size of the monitoring range. The longer the extension length of the inner slide bar (4), the larger the monitoring range. S2: Then, the alarm device 1 (13) and the alarm device 2 (16) for alarming are fixed to the outer wall of the container respectively, and the alarm device 1 (13) is fixed to the low water level alarm position, and the alarm device 2 (16) is fixed to the high water level alarm position; S3: When the liquid level in the container continues to rise or fall, the change in the liquid level will drive the float (5) to move up and down, and then drive the trigger rod (17) to move up and down under the action of the inner slide rod (4) and the main tube (8). When the liquid level is too high or too low to the set position, the trigger rod (17) will automatically trigger the corresponding trigger alarm mechanism; that is, it will indirectly drive the contact slider (28) and the wedge slide (29) to contact, and then trigger the corresponding alarm.

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