A liquid level detection device based on temperature transmitter

Abstract

The application discloses a liquid level detection device based on a temperature transmitter and relates to the technical field of intelligent sensors.The liquid level detection device comprises a liquid level meter body and a backflushing assembly.The lower end of the liquid level meter body is provided with a protective shell, a pressure lead hole is formed in the outer side of the lower end of the protective shell, a filter plate is arranged in the protective shell, and the backflushing assembly is arranged in the protective shell.The backflushing assembly comprises a waterproof micro motor.The temperature transmitter probe detects the ambient temperature, the error of the pressure transmitter under different ambient temperatures is obtained, the detection result of the pressure transmitter is compensated, and the overall detection precision is improved, so that the sensor is more intelligent.When the filter plate is blocked, the motor is started to drive the screw rod to rotate, the first hole plate and the second hole plate are driven to move downwards and are sealed by the through holes, the liquid is backwashed to the filter plate to remove impurities, the filter plate does not need to be taken out for maintenance, the maintenance period is prolonged, and the continuity of detection is ensured.

Description

Technical Field

[0001] This invention relates to the field of intelligent sensor technology, specifically to a liquid level detection device based on a temperature transmitter. Background Technology

[0002] Intelligent sensors are advanced devices that combine sensor technology with information processing capabilities. They can sense the physical quantities of the environment or objects and perform data acquisition, processing, analysis, and even decision-making through a built-in microprocessor. Finally, they interact with other devices or systems through a communication module. They are not only an upgrade of traditional sensors but also a core component of the Internet of Things, artificial intelligence, and automation systems. Submersible level gauges are based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. They are made using advanced isolated diffused silicon sensitive elements or ceramic capacitive pressure sensitive sensors. They convert static pressure into an electrical signal, and after temperature compensation and linear correction, convert it into a standard electrical signal. They are widely used in shipbuilding, sewage treatment and urban water supply systems, industrial site liquid level measurement and monitoring, dams and water conservancy projects, and hydrological measurement and monitoring.

[0003] In existing submersible level gauges, liquid enters the probe through the pressure inlet during use. At this time, the filter screen inside the probe can prevent impurities from contacting the pressure sensor. However, impurities will continue to adhere to the filter screen. Since it is not easy to remove them, after a long period of use, when there are too many impurities on the filter screen, it is easy to become clogged, which will affect the accuracy of liquid level detection. Summary of the Invention

[0004] The purpose of this invention is to provide a liquid level detection device based on a temperature transmitter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a liquid level detection device based on a temperature transmitter, comprising a liquid level gauge body and a backflushing assembly. A protective shell is disposed at the lower end of the liquid level gauge body, and a pressure-applying hole is provided on the outer side of the lower end of the protective shell. A filter plate is disposed inside the protective shell. The backflushing assembly is disposed inside the protective shell and includes a waterproof micro motor. The waterproof micro motor is fixed in the middle of the inner side of the protective shell, and one end of the waterproof micro motor is connected to a gear commutator. The gear commutator is fixedly connected to the protective shell. The output shaft of the gear commutator is connected to a screw, and a first perforated plate is threadedly connected to the outer side of the upper end of the screw. A first magnet is fixed to the outer bottom end of the first perforated plate, and a first slider is disposed on the outer side of the first perforated plate. A limiting groove is provided on the inner side of the protective shell, and a second slider is slidably connected inside the limiting groove. A rubber pad is fixed to one side of the second slider, and a second perforated plate is fixed to one end of the second slider. A second magnet is fixed to the outer top surface of the second perforated plate.

[0006] Furthermore, both the first and second perforated plates are slidably connected to the protective shell, and the through holes on the first and second perforated plates are misaligned with each other.

[0007] Furthermore, the limiting groove is stepped, and the upper depth of the limiting groove is equal to the length of the first slider, and the length of the first slider is less than the length of the second slider.

[0008] Furthermore, a pressure transmitter probe is installed inside the lower end of the liquid level gauge body, and a temperature transmitter probe is connected to one bottom end of the liquid level gauge body, while a waterproof and breathable membrane is provided at the other bottom end of the liquid level gauge body.

[0009] Furthermore, a vibration component is connected to the bottom of the screw, the vibration component includes a fixed seat, the fixed seat is fixed to the bottom of the screw, and top rods are symmetrically arranged on the top of the fixed seat. A limit block is connected to the bottom of the filter plate, and a guide block is fixed to the middle of the bottom surface of the filter plate.

[0010] Furthermore, the filter plate is slidably connected to the screw, and the limiting blocks are equidistantly distributed around the bottom of the filter plate, and the limiting blocks are triangular in shape.

[0011] Furthermore, a telescopic column is installed on the top of the guide block, and a vibration spring is sleeved on the outside of the telescopic column, and the telescopic column is fixedly connected to the protective shell.

[0012] Furthermore, a pressurizing component is connected to the bottom of the fixed base. The pressurizing component includes a rotating base. The rotating base is fixed to the bottom of the fixed base. A central groove is provided at the top center of the rotating base. An inclined groove is provided in the middle of the bottom surface of the rotating base. An arc groove is provided at the outer end of the top surface of the rotating base. The arc groove is connected to the rotating base through the inclined groove.

[0013] Furthermore, a guide plate is rotatably connected to the bottom of the rotating seat, and a torsion spring is installed at the upper end of the guide plate. The torsion spring is fixedly connected to the rotating seat. A sliding column is slidably connected inside the central groove, and a connecting rod is fixedly attached to the bottom of the connecting rod. A limit sleeve is slidably connected to the outer side of one end of the connecting rod, and the limit sleeve is fixedly connected to the protective shell.

[0014] Furthermore, a drive column is provided at the end of the connecting rod, and a limit frame is slidably connected to the outside of the drive column. A sealing plate is fixed on one side of the limit frame, and the sealing plate is rotatably connected to the protective shell.

[0015] This invention provides a liquid level detection device based on a temperature transmitter, which has the following advantages:

[0016] 1. This invention uses a temperature transmitter probe to detect ambient temperature and compensates for the pressure transmitter's detection results based on the error of the pressure transmitter under different ambient temperatures to improve the overall detection accuracy, making the sensor more intelligent. When the filter plate is clogged, the motor drives the screw to rotate, causing the first and second orifice plates to move down and seal through the through holes. The liquid then backwashes the filter plate to remove impurities, eliminating the need for removal and maintenance, extending the maintenance cycle and ensuring continuous detection. Furthermore, when the screw rotates, the first and second orifice plates can automatically move up and reset, achieving automatic separation, allowing the liquid to flow normally and ensuring the normal progress of subsequent detection.

[0017] 2. During the backflushing process, the vibrating spring pushes the filter plate to fit against the top rod. As the screw rotates, it drives the top rod to move. The interaction between the top rod and the inclined surface of the limiting block causes the filter plate to move upward. When they separate, the spring causes the filter plate to shake to shake off impurities. Therefore, during the backflushing process, the filter plate can also automatically shake to shake off the impurities adhering to its surface, further improving the cleaning effect of the filter plate. At the same time, during normal testing, when the filter plate vibrates slightly due to the vibrating spring, the multi-hole design of the first and second perforated plates can reduce the interference of turbulence on pressure measurement, which is beneficial to improving the stability of the measurement.

[0018] 3. When the screw of this invention rotates counterclockwise, the rotating seat rotates and pushes the sliding column through the guide plate, causing it to slide into the arc groove along the inclined groove. The connecting rod drives the sealing plate to block the pressure hole. At the same time, the arc groove is relatively long, which can simultaneously place three sliding columns inside. Therefore, it ensures that only one pressure hole is open for concentrated flushing, avoiding diversion of other holes and affecting the cleaning effect. In addition, the water flow velocity is relatively fast when sprayed, which can flush impurities away from the detection range and reduce interference in the subsequent detection process. After cleaning, when the screw rotates back, all the sliding columns will return to the central groove in sequence, automatically releasing the blockage of the pressure hole without additional operation, making it more convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a liquid level detection device based on a temperature transmitter according to the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the liquid level gauge body of the liquid level detection device based on a temperature transmitter according to the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the protective shell of a liquid level detection device based on a temperature transmitter according to the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the backflush assembly of a liquid level detection device based on a temperature transmitter according to the present invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the shaking component of a liquid level detection device based on a temperature transmitter according to the present invention;

[0024] Figure 6 This is a bottom view of the rotating base structure of a liquid level detection device based on a temperature transmitter according to the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the pressurization component of a liquid level detection device based on a temperature transmitter according to the present invention.

[0026] In the diagram: 1. Level gauge body; 2. Pressure transmitter probe; 3. Temperature transmitter probe; 4. Waterproof and breathable membrane; 5. Protective housing; 6. Pressure tap; 7. Filter plate; 8. Backflush assembly; 801. Waterproof micro motor; 802. Gear commutator; 803. Screw; 804. First orifice plate; 805. First magnet; 806. First slider; 807. Limiting groove; 808. Second slider; 809. Rubber pad; 810. Second orifice plate; 811. Second magnet; 9. Vibration assembly; 901, fixed base; 902, top rod; 903, limit block; 904, guide block; 905, telescopic column; 906, vibration spring; 10, pressurization assembly; 1001, rotating base; 1002, center groove; 1003, inclined groove; 1004, arc groove; 1005, guide plate; 1006, torsion spring; 1007, sliding column; 1008, connecting rod; 1009, limit sleeve; 1010, drive column; 1011, limit frame; 1012, sealing plate. Detailed Implementation

[0027] Please see Figures 1 to 4This invention provides a technical solution: a liquid level detection device based on a temperature transmitter, comprising a liquid level gauge body 1 and a backflushing assembly 8. A pressure transmitter probe 2 is installed inside the lower end of the liquid level gauge body 1, and a temperature transmitter probe 3 is connected to one bottom end of the liquid level gauge body 1. A waterproof and breathable membrane 4 is provided at the other bottom end of the liquid level gauge body 1. A protective shell 5 is installed at the lower end of the liquid level gauge body 1, and a pressure-applying hole 6 is opened on the outer side of the lower end of the protective shell 5. A filter plate 7 is provided inside the protective shell 5. The backflushing assembly 8 is located inside the protective shell 5 and includes a waterproof micro motor 801. The waterproof micro motor 801 is fixed in the middle of the inner side of the protective shell 5, and one end of the waterproof micro motor 801 is connected to a gear commutator 802. The gear commutator 802 is fixedly connected to the protective shell 5, and the output shaft of the gear commutator 802 is connected to a screw 803. The upper outer side of the screw 803 is threaded with a first hole plate 804. The bottom outer end of the first hole plate 804 is fixed with a first magnet 805. The outer side of the first hole plate 804 is equipped with a first slider 806. The inner side of the protective shell 5 is provided with a limiting groove 807. The inside of the limiting groove 807 is slidably connected with a second slider 808. The limiting groove 807 is stepped. The upper depth of the limiting groove 807 is equal to the length of the first slider 806. The length of the first slider 806 is less than the length of the second slider 808. A rubber pad 809 is fixed on one side of the second slider 808. A second hole plate 810 is fixed on one end of the second slider 808. The outer end of the top surface of the second hole plate 810 is fixed with a second magnet 811. The first hole plate 804 and the second hole plate 810 are both slidably connected to the protective shell 5. The through holes on the first hole plate 804 and the through holes on the second hole plate 810 are misaligned.

[0028] The specific operation is as follows: During detection, liquid enters the interior of the protective housing 5 through the pressure inlet 6, and the air inside the protective housing 5 enters the cable pipe at the upper end of the level gauge body 1 through the waterproof and breathable membrane 4, and is discharged into the atmosphere through its venting channel, ensuring that the protective housing 5 is filled with liquid, which helps improve detection accuracy. During this process, the filter plate 7 filters the liquid to avoid contaminating the probe. Afterwards, the pressure transmitter probe 2 detects the hydraulic pressure, which facilitates the calculation of the liquid level. At the same time, the temperature transmitter probe 3 can be used to detect the ambient temperature. Temperature affects the detection results of pressure transmitters. Therefore, the results of pressure transmitters can be compensated and corrected based on the detected temperature, making the sensor more intelligent and further improving the detection accuracy of pressure transmitters. When too many impurities adhere to the filter plate 7 and cause blockage, the waterproof micro motor 801 is activated, which drives the screw 803 to rotate through the gear reversing device 802. At this time, the rotation of the first perforated plate 804 is restricted by the limiting groove 807 and the first slider 806, allowing the first perforated plate 804 to move downward. At the same time, because the through holes on the first perforated plate 804 and the second perforated plate 810... The through holes are staggered. When the first orifice plate 804 and the second orifice plate 810 are in contact, they will block and seal each other's through holes, preventing liquid from passing through. Therefore, as the first orifice plate 804 continues to move downward, it can push the lower liquid towards the filter plate 7, causing the liquid to backwash the filter plate 7, washing off the impurities attached to the surface of the filter plate 7, and discharging them from the protective shell 5 through the pressure hole 6. Therefore, it is possible to prevent the filter plate 7 from clogging without removing the level gauge from the liquid for maintenance, thus extending the maintenance cycle and ensuring the continuity of the detection process. Furthermore, when the screw 803 rotates, the first... When the first orifice plate 804 moves upward, the first magnet 805 and the second magnet 811 attract each other, which will drive the second orifice plate 810 to move upward together. When the second slider 808 moves to the step of the limiting groove 807, it will restrict the second orifice plate 810 from moving upward. At this time, the first orifice plate 804 will separate from the second orifice plate 810 when it moves upward, so the liquid can flow through its through hole, allowing the level gauge to perform normal monitoring. At the same time, the rubber pad 809 increases the friction between the second slider 808 and the protective shell 5, which helps to improve the stability of the second orifice plate 810 after it moves.

[0029] Please see Figure 5The bottom of the screw 803 is connected to a vibration component 9, which includes a fixed seat 901. The bottom of the screw 803 is fixed to the fixed seat 901, and the top of the fixed seat 901 is symmetrically arranged with a top rod 902. The bottom of the filter plate 7 is connected to a limit block 903, and the middle of the bottom surface of the filter plate 7 is fixed with a guide block 904. The filter plate 7 is slidably connected to the screw 803, and the limit blocks 903 are equidistantly distributed around the bottom of the filter plate 7 and are triangular. The top of the guide block 904 is provided with a telescopic column 905, and a vibration spring 906 is sleeved on the outside of the telescopic column 905. The telescopic column 905 is fixedly connected to the protective shell 5.

[0030] The specific operation is as follows: During the backflush process, the vibration spring 906, under the limitation of the telescopic column 905, pushes the guide block 904, causing it to cause the filter plate 7 to fit against the top of the push rod 902. When the screw 803 rotates, it also causes the push rod 902 on the fixed base 901 to move synchronously. When the push rod 902 fits against the inclined surface of the limiting block 903, because the filter plate 7 can only move vertically under the limitation of the guide block 904, the push rod 902 can push the limiting block 903 to move the filter plate 7 upwards. When 902 separates from the limiting block 903, the vibration spring 906 will drive the filter plate 7 to move down and reset. Therefore, during the backflush process, the filter plate 7 can also automatically shake to shake off the impurities adhering to its surface, further improving the cleaning effect of the filter plate 7. At the same time, during normal testing, when the filter plate 7 vibrates slightly due to the vibration spring 906, the multi-hole design on the first perforated plate 804 and the second perforated plate 810 can reduce the interference of turbulence on pressure measurement and improve the stability of the testing process.

[0031] Please see Figure 6 and Figure 7The bottom of the fixed base 901 is connected to a pressure boosting assembly 10, which includes a rotating base 1001. The rotating base 1001 is fixed to the bottom of the fixed base 901. A central groove 1002 is formed in the center of the top of the rotating base 1001. A sloping groove 1003 is formed in the center of the bottom surface of the rotating base 1001. An arc groove 1004 is formed at the outer end of the top surface of the rotating base 1001. The arc groove 1004 is connected to the rotating base 1001 through the sloping groove 1003. A guide plate 1005 is rotatably connected to the bottom of the rotating base 1001, and a torsion spring 1 is installed at the upper end of the guide plate 1005. 006, and the torsion spring 1006 is fixedly connected to the rotating seat 1001. The sliding column 1007 is slidably connected inside the center groove 1002. The bottom of the connecting rod 1008 is fixedly connected to the connecting rod 1008. The limiting sleeve 1009 is slidably connected to the outer side of one end of the connecting rod 1008. The limiting sleeve 1009 is fixedly connected to the protective shell 5. The end of the connecting rod 1008 is provided with a drive column 1010. The outer side of the drive column 1010 is slidably connected to a limiting frame 1011. A sealing plate 1012 is fixed to one side of the limiting frame 1011. The sealing plate 1012 is rotatably connected to the protective shell 5.

[0032] The specific operation is as follows: when the screw 803 rotates counterclockwise, causing the first hole plate 804 to move downwards, it will also simultaneously cause the rotating seat 1001 to rotate counterclockwise. At this time, the guide plate 1005 can push the sliding column 1007. In addition, the limiting sleeve 1009 will also restrict the movement direction of the connecting rod 1008. Therefore, the sliding column 1007 can slide along the inclined groove 1003 into the arc groove 1004. The connecting rod 1008 will then push the limiting frame 1011 through the drive column 1010, so that... The sealing plate 1012 rotates to block the pressure hole 6. Simultaneously, the arc groove 1004 is relatively long, allowing three sliding pillars 1007 to be positioned inside simultaneously. When a sliding pillar 1007 moves to the other end of the arc groove 1004, it will move back along another inclined groove 1003 into the sliding pillar 1007. Therefore, during backflushing, only one sealing plate 1012 is kept open. Thus, when the pressure hole 6 becomes blocked at that location, greater pressure can be used to push impurities away. This design avoids diverting water from other holes and reducing the cleaning effect. Furthermore, during the rotation of the rotating seat 1001, each pressure hole 6 opens sequentially, allowing for thorough cleaning. The high water flow velocity during spraying also flushes impurities away from the detection range, reducing interference during subsequent detection. Similarly, when the screw 803 rotates, the sliding pillars 1007 inside the arc groove 1004 slide sequentially into the central groove 1002 under the guidance of the inclined groove 1003. When the sliding pillar 1007 contacts the guide plate 1005, it pushes the guide plate 1005 to rotate and avoid it, preventing the sliding pillar 1007 from sliding into the inclined groove 1003. Upon separation, the guide plate 1005 automatically resets under the action of the torsion spring 1006. Therefore, when the rotating seat 1001 rotates in the opposite direction, all the sliding pillars 1007 move into the central groove 1002, opening all the sealing plates 1012 and allowing the pressure holes 6 to function normally.

[0033] In summary, this liquid level detection device based on a temperature transmitter is first used by immersing the device in the liquid until it sinks to the bottom. The liquid then enters the protective housing 5 through the pressure inlet 6, and the air inside the protective housing 5 enters the cable pipe at the top of the liquid level gauge body 1 through the waterproof and breathable membrane 4 and is discharged into the atmosphere through its venting channel. During this process, the filter plate 7 filters the liquid, and the pressure transmitter probe 2 detects the hydraulic pressure, thus facilitating the calculation of the liquid level height. At the same time, the temperature transmitter probe 3 can be used to detect the ambient temperature, thus facilitating the compensation and correction of the pressure transmitter results based on the detected temperature.

[0034] Next, after a period of use, the waterproof micro motor 801 is started, causing it to drive the screw 803 to rotate counterclockwise via the gear reversing device 802. At this time, the rotation of the first perforated plate 804 is restricted by the limiting groove 807 and the first slider 806, allowing the first perforated plate 804 to move downwards. When the first perforated plate 804 and the second perforated plate 810 are in contact, they will block and seal each other's through holes, preventing liquid from passing through. Therefore, as the first perforated plate 804 continues to move downwards, the liquid at the bottom can be pushed towards the filter plate 7, allowing the liquid to backwash the filter plate 7 and wash off the impurities attached to the surface of the filter plate 7. During this process, the screw 803 will also drive the rotating seat 1001 to rotate counterclockwise. At this time, the guide plate 1005 can push the sliding column 1007, and the limiting sleeve 1009 will also restrict the movement direction of the connecting rod 1008, thus allowing the sliding column 1007 to move along the inclined groove. When 1003 slides into the arc groove 1004, the connecting rod 1008 will push the limit frame 1011 through the drive column 1010, causing the sealing plate 1012 to rotate and block the pressure hole 6. At the same time, the arc groove 1004 is long enough to allow three sliding columns 1007 to be located inside at the same time. When the sliding column 1007 moves to the other end of the arc groove 1004, it will move back into the sliding column 1007 along another inclined groove 1003. Therefore, during the backwashing process, only one sealing plate 1012 is open. So when the pressure hole 6 at that location is blocked, a larger pressure can be used to push out the impurities, avoiding diversion of other holes and reducing the cleaning effect. In addition, during the rotation of the rotating seat 1001, each pressure hole 6 can be opened in sequence, and the water flow velocity when sprayed is relatively fast, which can flush the impurities away from the detection range and reduce interference in the subsequent detection process.

[0035] Then, during the backflush process, the vibration spring 906 will push the guide block 904 under the limit of the telescopic column 905, so that the filter plate 7 will be in contact with the top of the top rod 902. When the screw 803 rotates, it will also drive the top rod 902 on the fixed seat 901 to move synchronously. When the top rod 902 is in contact with the inclined surface of the limit block 903, the filter plate 7 can only move vertically under the limit of the guide block 904. Therefore, the top rod 902 can push the limit block 903 to make the filter plate 7 move upward. When the top rod 902 separates from the limit block 903, the vibration spring 906 will drive the filter plate 7 to move downward and reset. Therefore, during the backflush process, the filter plate 7 can also automatically shake to shake off the impurities adhering to its surface.

[0036] Finally, after backflushing, when the screw 803 rotates, the sliding pillars 1007 inside the arc groove 1004 will slide sequentially into the central groove 1002 under the guidance of the inclined groove 1003. When the sliding pillar 1007 contacts the guide plate 1005, it will push the guide plate 1005 to rotate and avoid it. Therefore, the sliding pillar 1007 will not slide into the inclined groove 1003. And when separating, the guide plate 1005 will automatically reset under the action of the torsion spring 1006. Thus, when the rotating seat 1001 rotates in the opposite direction, all the sliding pillars 1007 can move into the central groove 1002. Inside, all the sealing plates 1012 will be open, allowing the pressure hole 6 to work normally. At the same time, the first orifice plate 804 will move upward. At this time, the first magnet 805 and the second magnet 811 will attract each other, which will drive the second orifice plate 810 to move upward together. When the second slider 808 moves to the step of the limiting groove 807, it will restrict the second orifice plate 810 from moving upward. At this time, the first orifice plate 804 will separate from the second orifice plate 810 when it moves upward, so the liquid can flow through its through hole, allowing the level gauge to perform normal monitoring work.

[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A liquid level detection device based on a temperature transmitter, characterized in that, The system includes a level gauge body (1) and a backflushing assembly (8). A protective shell (5) is mounted on the lower end of the level gauge body (1), and a pressure-sensing hole (6) is provided on the outer side of the lower end of the protective shell (5). A filter plate (7) is installed inside the protective shell (5). The backflushing assembly (8) is located inside the protective shell (5). The backflushing assembly (8) includes a waterproof micro motor (801). The waterproof micro motor (801) is fixed in the middle of the inner side of the protective shell (5), and one end of the waterproof micro motor (801) is connected to a gear commutator (802). The gear commutator (802) is fixedly connected to the protective shell (5). The output shaft of the gear commutator (802) is connected to a screw (803), and the upper outer side of the screw (803) is threaded with... A first perforated plate (804) is connected, a first magnet (805) is fixed at the bottom outer end of the first perforated plate (804), and a first slider (806) is arranged on the outer side of the first perforated plate (804). A limiting groove (807) is opened on the inner side of the protective shell (5), and a second slider (808) is slidably connected inside the limiting groove (807). A rubber pad (809) is fixed on one side of the second slider (808), a second perforated plate (810) is fixed at one end of the second slider (808), and a second magnet (811) is fixed at the top outer end of the second perforated plate (810). A pressure transmitter probe (2) is arranged inside the lower end of the liquid level gauge body (1), and a temperature transmitter probe (3) is connected to one bottom end of the liquid level gauge body (1).

2. The liquid level detection device based on a temperature transmitter according to claim 1, characterized in that, The first perforated plate (804) and the second perforated plate (810) are both slidably connected to the protective shell (5), and the through holes on the first perforated plate (804) and the through holes on the second perforated plate (810) are misaligned with each other.

3. The liquid level detection device based on a temperature transmitter according to claim 1, characterized in that, The limiting groove (807) is stepped, and the upper depth of the limiting groove (807) is equal to the length of the first slider (806), and the length of the first slider (806) is less than the length of the second slider (808).

4. The liquid level detection device based on a temperature transmitter according to claim 1, characterized in that, A waterproof and breathable membrane (4) is provided at the other end of the bottom of the liquid level gauge body (1).

5. The liquid level detection device based on a temperature transmitter according to claim 1, characterized in that, The bottom of the screw (803) is connected to a vibration component (9), which includes a fixed seat (901). The bottom of the screw (803) is fixed to the fixed seat (901), and the top of the fixed seat (901) is symmetrically arranged with top rods (902). The bottom of the filter plate (7) is connected to a limit block (903), and a guide block (904) is fixed in the middle of the bottom surface of the filter plate (7).

6. The liquid level detection device based on a temperature transmitter according to claim 5, characterized in that, The filter plate (7) is slidably connected to the screw (803), and the limiting blocks (903) are equidistantly distributed around the bottom of the filter plate (7), and the limiting blocks (903) are triangular.

7. A liquid level detection device based on a temperature transmitter according to claim 5, characterized in that, The top of the guide block (904) is provided with a telescopic column (905), and a vibration spring (906) is sleeved on the outside of the telescopic column (905). The telescopic column (905) is fixedly connected to the protective shell (5).

8. A liquid level detection device based on a temperature transmitter according to claim 5, characterized in that, The bottom of the fixed base (901) is connected to a pressurizing component (10). The pressurizing component (10) includes a rotating base (1001). The rotating base (1001) is fixed to the bottom of the fixed base (901). A central groove (1002) is provided in the center of the top of the rotating base (1001). An inclined groove (1003) is provided in the middle of the bottom surface of the rotating base (1001). An arc groove (1004) is provided at the outer end of the top surface of the rotating base (1001). The arc groove (1004) is connected to the rotating base (1001) through the inclined groove (1003).

9. A liquid level detection device based on a temperature transmitter according to claim 8, characterized in that, The bottom of the rotating seat (1001) is rotatably connected to a guide plate (1005), and a torsion spring (1006) is installed at the upper end of the guide plate (1005). The torsion spring (1006) is fixedly connected to the rotating seat (1001). A sliding column (1007) is slidably connected inside the central groove (1002). A connecting rod (1008) is fixed at the bottom of the connecting rod (1008). A limit sleeve (1009) is slidably connected to the outer side of one end of the connecting rod (1008), and the limit sleeve (1009) is fixedly connected to the protective shell (5).

10. A liquid level detection device based on a temperature transmitter according to claim 9, characterized in that, The end of the connecting rod (1008) is provided with a drive column (1010), and a limit frame (1011) is slidably connected to the outside of the drive column (1010). A sealing plate (1012) is fixed on one side of the limit frame (1011), and the sealing plate (1012) is rotatably connected to the protective shell (5).

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