Liquid level detection device based on temperature transmitter

Abstract

The invention 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 main body and a backflushing assembly, the lower end of the liquid level meter main body is provided with a protective shell, the outer side of the lower end of the protective shell is provided with a pressure guiding hole, and the protective shell is internally provided with a filter plate; and the recoil assembly is arranged in the protective shell and comprises a waterproof micro motor. The environment temperature is detected through the temperature transmitter probe, the detection result of the pressure transmitter is compensated according to errors of the pressure transmitter at different environment temperatures so as to improve the overall detection precision, the sensor is more intelligent, and when the filter plate is blocked, the motor is started to drive the screw to rotate, so that the detection precision is improved. The first pore plate and the second pore plate are driven to move downwards and are sealed in a staggered mode through the through holes, liquid can reversely wash the filter plate to remove impurities, taking out for maintenance is not needed, the maintenance period is prolonged, and detection continuity is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent sensors, and particularly to a liquid level detection device based on a temperature transmitter. Background Art

[0002] An intelligent sensor is an advanced device that combines sensor technology and information processing capabilities. It can sense physical quantities of the environment or an object, and through a built-in microprocessor, perform data acquisition, processing, analysis, and even decision-making. Finally, it interacts with other devices or systems through a communication module. It is not only an upgrade of traditional sensors but also a core component of the Internet of Things, artificial intelligence, and automation systems. Among them, a submersible level gauge is made based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. It is made of an advanced isolated diffused silicon sensitive element or a ceramic capacitive pressure sensitive sensor, which converts static pressure into an electrical signal, and then through temperature compensation and linear correction, is converted into a standard electrical signal for a pressure sensor for measuring liquid level, and is widely used in shipbuilding, sewage treatment, urban water supply systems, liquid level measurement and monitoring in industrial sites, dams and water conservancy projects, and hydrological measurement and monitoring, etc.

[0003] During the use of the existing submersible level gauge, the liquid will enter the probe through the pressure guiding hole. At this time, part of the filter screen inside the probe can block impurities from contacting the pressure sensor. However, the impurities will continuously adhere to the filter screen. Since it is not convenient to remove them, after long-term use, when there are too many impurities on the filter screen, it is easy to cause blockage, resulting in the problem of affecting the liquid level detection accuracy. Summary of the Invention

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

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

[0006] Furthermore, both the first orifice plate and the second orifice plate are slidably connected to the protective housing, and the through holes on the first orifice plate and the second orifice plate are misaligned with each other.

[0007] Furthermore, the limiting groove is stepped, and the depth of the upper part 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 arranged inside the lower end of the liquid level gauge body, a temperature transmitter probe is connected to one end of the bottom of the liquid level gauge body, and a waterproof and breathable film is arranged at the other end of the bottom of the liquid level gauge body.

[0009] Furthermore, a shaking assembly is connected to the bottom of the screw rod. The shaking assembly includes a fixed seat. The bottom of the screw rod is fixed with a fixed seat, and ejector rods are symmetrically arranged on the top of the fixed seat. A limiting block is connected to the bottom of the filter plate, and a guiding block is fixed in the middle of the bottom surface of the filter plate.

[0010] Furthermore, the filter plate is slidably connected to the screw rod, the limiting blocks are evenly distributed in a circumferential manner at the bottom of the filter plate, and the limiting blocks are triangular.

[0011] Furthermore, a telescopic column is arranged on the top of the guiding block, a vibration spring is sleeved outside the telescopic column, and the telescopic column is fixed to the protective housing.

[0012] Furthermore, a pressurizing assembly is connected to the bottom of the fixed seat. The pressurizing assembly includes a rotating seat. The bottom of the fixed seat is fixed with a rotating seat, a central groove is opened in the center of the top of the rotating seat, an inclined groove is opened in the middle of the bottom surface of the rotating seat, and an arc groove is opened at the outer end of the top surface of the rotating seat, and the arc groove is communicated with the rotating seat through the inclined groove.

[0013] Furthermore, a guiding plate is rotatably connected to the bottom of the rotating seat, a torsion spring is arranged at the upper end of the guiding plate, and the torsion spring is fixed to the rotating seat. A sliding column is slidably connected inside the central groove, a connecting rod is fixed to the bottom of the connecting rod, and a limiting sleeve is slidably connected to the outside of one end of the connecting rod, and the limiting sleeve is fixed to the protective housing.

[0014] Furthermore, a driving column is arranged at the end of the connecting rod, a limiting frame is slidably connected to the outside of the driving column, a sealing plate is fixed to one side of the limiting frame, and the sealing plate is rotatably connected to the protective housing.

[0015] The present invention provides a liquid level detection device based on a temperature transmitter, which has the following beneficial effects:

[0016] 1. The present invention detects the ambient temperature through a temperature transmitter probe, and compensates for the detection result of the pressure transmitter according to the error of the pressure transmitter at different ambient temperatures to improve the overall detection accuracy, making the sensor more intelligent. When the filter plate is blocked, the motor is started to drive the screw to rotate, driving the first orifice plate and the second orifice plate to move down and seal through the through hole offset. The liquid will reversely flush the filter plate to remove impurities, without the need to remove it for maintenance, extending the maintenance cycle and ensuring the continuity of detection. When the screw rotates, the first orifice plate and the second orifice plate can automatically move up and reset, and realize automatic separation, so that the liquid can circulate normally, which is conducive to ensuring the normal progress of subsequent detection.

[0017] 2. In the process of recoil, the vibration spring of the present invention will push the filter plate to fit together with the push rod. As the screw rotates, the push rod will be driven to move. The push rod and the inclined surface of the limit block act to move the filter plate up. When they are separated, the spring will shake the filter plate to shake off impurities. Therefore, during the process of recoil, the filter plate can also be automatically shaken to shake off impurities adhered to its surface, thereby further improving the effect of cleaning the filter plate. At the same time, during normal detection, when the filter plate vibrates slightly due to the vibration spring, the porous design of the first orifice plate and the second orifice plate can reduce the interference of turbulence on pressure measurement, which is beneficial to improving the stability during measurement.

[0018] 3. When the screw of the present invention rotates counterclockwise, the rotating seat rotates and pushes the sliding column through the guide plate, so that it slides into the arc groove along the inclined groove, and the connecting rod drives the sealing plate to block the pressure-inducing hole. At the same time, the arc groove is relatively long, so that three sliding columns can be located inside at the same time, thereby ensuring that only one pressure-inducing hole is opened for centralized flushing to avoid diversion of other holes to affect the cleaning effect, and the water flow rate during spraying is relatively fast, which can flush impurities away from the detection range and reduce interference in subsequent detection processes. When the screw rotates after cleaning, all the sliding columns will return to the center groove in turn, automatically releasing the obstruction of the pressure-inducing hole without the need for additional operations, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the liquid level meter main body of a liquid level detection device based on a temperature transmitter of the present invention;

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

[0022] Figure 4 It is a three-dimensional structural schematic diagram of a recoil assembly of a liquid level detection device based on a temperature transmitter of the present invention;

[0023] Figure 5 Schematic three-dimensional structure diagram of the jitter component of a liquid level detection device based on a temperature transmitter according to the present invention;

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

[0025] Figure 7 Schematic three-dimensional structure diagram of the pressurizing component of a liquid level detection device based on a temperature transmitter according to the present invention.

[0026] In the figure: 1, liquid level gauge main body; 2, pressure transmitter probe; 3, temperature transmitter probe; 4, waterproof and breathable membrane; 5, protective shell; 6, pressure guiding hole; 7, filter plate; 8, backwashing component; 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, jitter component; 901, fixed seat; 902, ejector rod; 903, limiting block; 904, guiding block; 905, telescopic column; 906, vibration spring; 10, pressurizing component; 1001, rotating seat; 1002, central groove; 1003, inclined groove; 1004, arc groove; 1005, guiding plate; 1006, torsion spring; 1007, sliding column; 1008, connecting rod; 1009, limiting sleeve; 1010, driving column; 1011, limiting frame; 1012, sealing plate. Specific embodiments

[0027] Please refer to Figures 1 to 4, the present invention provides a technical solution: a liquid level detection device based on a temperature transmitter, including a liquid level gauge main body 1 and a backflush component 8. A pressure transmitter probe 2 is arranged inside the lower end of the liquid level gauge main body 1, and a temperature transmitter probe 3 is connected to one end of the bottom of the liquid level gauge main body 1. And a waterproof breathable membrane 4 is arranged at the other end of the bottom of the liquid level gauge main body 1. A protective shell 5 is arranged at the lower end of the liquid level gauge main body 1, and a pressure guiding hole 6 is opened on the outer side of the lower end of the protective shell 5. And a filter plate 7 is arranged inside the protective shell 5. The backflush component 8 is arranged inside the protective shell 5. The backflush component 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, and the gear commutator 802 is fixed to the protective shell 5. The output shaft of the gear commutator 802 is connected to a screw rod 803. And a first orifice plate 804 is threadedly connected to the outer side of the upper end of the screw rod 803. A first magnet 805 is fixed to the outer end of the bottom of the first orifice plate 804. And a first slider 806 is arranged on the outer side of the first orifice 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 to the inside of the limiting groove 807. The limiting groove 807 is in a stepped shape, and the depth of the upper part 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. A rubber pad 809 is fixed to one side of the second slider 808. A second orifice plate 810 is fixed to one end of the second slider 808. And a second magnet 811 is fixed to the outer end of the top surface of the second orifice plate 810. Both the first orifice plate 804 and the second orifice plate 810 are slidably connected to the protective shell 5. And the through holes on the first orifice plate 804 and the through holes on the second orifice plate 810 are mutually misaligned;

[0028] The specific operation is as follows. During detection, the liquid will enter the interior of the protective shell 5 through the pressure guiding hole 6, and the air inside the protective shell 5 will enter the cable pipeline at the upper end of the liquid level gauge body 1 through the waterproof breathable membrane 4 and be discharged into the atmosphere through its ventilation channel, ensuring that the protective shell 5 is filled with liquid, which is beneficial to improving the detection accuracy. During this process, the filter plate 7 will filter the liquid to avoid contaminating the probe. After that, the pressure transmitter probe 2 will detect 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 surrounding ambient temperature. Since the ambient temperature will affect the detection result of the pressure transmitter, the result of the pressure transmitter can be compensated and corrected according to the detected temperature, making the sensor more intelligent and further improving the detection accuracy of the pressure transmitter. When too much impurity adheres to the filter plate 7 and causes blockage, the waterproof micro motor 801 is started, which drives the screw 803 to rotate through the gear commutator 802. At this time, the rotation of the first orifice plate 804 can be restricted through the limit groove 807 and the first slider 806, and the first orifice plate 804 can be moved downward. At the same time, since the through holes on the first orifice plate 804 are misaligned with the through holes on the second orifice plate 810, when the first orifice plate 804 is in contact with the second orifice plate 810, their through holes will block and seal each other, preventing the liquid from passing through. Therefore, as the first orifice plate 804 continues to move downward, the liquid in the lower part can be pushed towards the filter plate 7, enabling 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 guiding hole 6. Therefore, it is not necessary to take out the liquid level gauge from the liquid for maintenance to prevent the filter plate 7 from being blocked, extending the maintenance period, which is beneficial to ensuring the continuity during the detection process. And when the screw 803 rotates back, the first orifice plate 804 will move upward. At this time, the first magnet 805 and the second magnet 811 will adsorb each other, thereby driving the second orifice plate 810 to move upward together. And when the second slider 808 moves to the step of the limit groove 807, the upward movement of the second orifice plate 810 will be restricted. At this time, when the first orifice plate 804 moves upward, it will be separated from the second orifice plate 810. Therefore, the liquid can flow through its through holes, enabling the liquid level gauge to perform normal monitoring. At the same time, the rubber pad 809 is used to increase the friction between the second slider 808 and the protective shell 5, which is beneficial to improving the stability of the second orifice plate 810 after movement.

[0029] Please refer to Figure 5, a vibration component 9 is connected to the bottom of the screw rod 803. The vibration component 9 includes a fixed seat 901. The bottom of the screw rod 803 is fixed with the fixed seat 901. And ejector rods 902 are symmetrically arranged on the top of the fixed seat 901. A limit block 903 is connected to the bottom of the filter plate 7. And a guide block 904 is fixed in the middle of the bottom surface of the filter plate 7. The filter plate 7 is slidably connected to the screw rod 803. And the limit blocks 903 are evenly distributed in a circular pattern about the bottom of the filter plate 7. And the limit blocks 903 are triangular. A telescopic column 905 is arranged on the top of the guide block 904. And a vibration spring 906 is sleeved on the outside of the telescopic column 905. And the telescopic column 905 is fixedly connected to the protective shell 5;

[0030] The specific operation is as follows. During the backwashing process, the vibration spring 906 will push the guide block 904 under the limit of the telescopic column 905, causing it to drive the filter plate 7 to fit against the top of the ejector rod 902. And when the screw rod 803 rotates, it will also drive the ejector rod 902 on the fixed seat 901 to move synchronously. And when the ejector rod 902 fits against the inclined surface of the limit block 903, since the filter plate 7 can only move vertically under the limit of the guide block 904, the ejector rod 902 can then push the limit block 903 to move the filter plate 7 upward. And when the ejector 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 backwashing process, the filter plate 7 can also be automatically vibrated to shake off the impurities adhering to its surface, further improving the cleaning effect of the filter plate 7. At the same time, during the normal detection process, when the filter plate 7 vibrates slightly due to the vibration spring 906, through the porous design on the first orifice plate 804 and the second orifice plate 810, the interference of turbulent flow on pressure measurement can be reduced, improving the stability during the detection process.

[0031] Please refer to Figure 6 and Figure 7, a pressurizing assembly 10 is connected to the bottom of the fixing base 901. The pressurizing assembly 10 includes a rotating base 1001. The rotating base 1001 is fixed to the bottom of the fixing base 901. A central groove 1002 is formed in the center of the top of the rotating base 1001. An inclined groove 1003 is formed in the middle 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 communicated with the rotating base 1001 through the inclined groove 1003. A guide plate 1005 is rotatably connected to the bottom of the rotating base 1001. A torsion spring 1006 is arranged at the upper end of the guide plate 1005. The torsion spring 1006 is fixedly connected to the rotating base 1001. A sliding column 1007 is slidably connected to the inside of the central groove 1002. A connecting rod 1008 is fixed to the bottom of the connecting rod 1008. A limiting sleeve 1009 is slidably connected to the outside of one end of the connecting rod 1008. The limiting sleeve 1009 is fixedly connected to the protective shell 5. A driving column 1010 is arranged at the end of the connecting rod 1008. A limiting frame 1011 is slidably connected to the outside of the driving column 1010. 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 to drive the first orifice plate 804 to move downward, it will also drive the rotating seat 1001 to rotate counterclockwise at the same time. At this time, the guide plate 1005 can push the sliding column 1007. In addition, the limit sleeve 1009 will also limit the moving direction of the connecting rod 1008. Therefore, the sliding column 1007 can slide into the arc groove 1004 along the inclined chute 1003. The connecting rod 1008 will push the limit frame 1011 through the driving column 1010, causing the sealing plate 1012 to rotate and block the pressure guiding hole 6. At the same time, the arc groove 1004 is relatively long, and three sliding columns 1007 can 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 chute 1003. Therefore, during the backflush cleaning process, it is ensured that only one sealing plate 1012 is in the open state. Therefore, when the pressure guiding hole 6 at this place is blocked, the impurities can be pushed out with a relatively large pressure, avoiding the diversion of other hole positions and reducing the cleaning effect. And during the rotation of the rotating seat 1001, each pressure guiding hole 6 can be opened in sequence, so that it can be fully cleaned. And the water flow velocity during spraying is relatively fast, so that the impurities can be washed away from the detection range, reducing the interference during the subsequent detection process. When the screw 803 rotates back, similarly, the sliding columns 1007 inside the arc groove 1004 will slide into the central groove 1002 in sequence under the guidance of the chute 1003. When the sliding column 1007 contacts the guide plate 1005, it will push the guide plate 1005 to rotate and avoid it. Therefore, the sliding column 1007 will not slide into the chute 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 reverse direction, all the sliding columns 1007 can move into the central groove 1002, so that all the sealing plates 1012 will be in the open state, enabling the pressure guiding holes 6 to work normally.

[0033] In summary, for this liquid level detection device based on a temperature transmitter, during use, first, the liquid level detection device is put into the liquid and sinks to the bottom of the liquid. The liquid will enter the inside of the protective shell 5 through the pressure guiding hole 6, and the air inside the protective shell 5 will enter the cable pipeline at the upper end of the liquid level gauge main body 1 through the waterproof breathable membrane 4 and be discharged into the atmosphere from its breathable channel. During this process, the filter plate 7 will filter the liquid, and the pressure transmitter probe 2 will detect 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 surrounding environmental temperature, so as to facilitate the compensation and correction of the results of the pressure transmitter according to the detected temperature.

[0034] Next, after using it for a period of time, start the waterproof micro-motor 801, which drives the screw 803 to rotate counterclockwise through the gear commutator 802. At this time, the rotation of the first orifice plate 804 can be restricted through the limit groove 807 and the first slider 806, and the first orifice plate 804 can be moved downward. When the first orifice plate 804 is in contact with the second orifice plate 810, their through-holes will block and seal each other, preventing the liquid from passing through. Therefore, as the first orifice plate 804 continues to move downward, the liquid below can be pushed toward the filter plate 7, so that the liquid can backwash the filter plate 7 in the reverse direction, washing 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 at the same time, the limit sleeve 1009 will restrict the moving direction of the connecting rod 1008. Therefore, the sliding column 1007 can slide into the arc groove 1004 along the inclined chute 1003, and the connecting rod 1008 will push the limit frame 1011 through the driving column 1010, causing the sealing plate 1012 to rotate to block the pressure guiding hole 6. At the same time, the arc groove 1004 is relatively long, and three sliding columns 1007 can 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 chute 1003. Therefore, during the backwashing process, it is ensured that only one sealing plate 1012 is in the open state. Therefore, when the pressure guiding hole 6 at this position is blocked, the impurities can be pushed out with a relatively large pressure, avoiding the diversion of other hole positions and reducing the cleaning effect. And during the rotation of the rotating seat 1001, each pressure guiding hole 6 can be opened in sequence, and the water flow velocity during spraying is relatively fast, so that the impurities can be washed away from the detection range, reducing interference in the subsequent detection process;

[0035] Then, during the backwashing process, the vibration spring 906 will push the guide block 904 under the limit of the telescopic column 905, causing it to drive the filter plate 7 to fit with the top of the ejector rod 902. And when the screw 803 rotates, it will also drive the ejector rod 902 on the fixed seat 901 to move synchronously. And when the ejector rod 902 is in contact with the inclined surface of the limit block 903, since the filter plate 7 can only move vertically under the limit of the guide block 904, the ejector rod 902 can push the limit block 903 to move the filter plate 7 upward. And when the ejector rod 902 is separated from the limit block 903, the vibration spring 906 will drive the filter plate 7 to move downward and reset. Therefore, during the backwashing process, the filter plate 7 can also vibrate automatically to shake off the impurities adhered to its surface;

[0036] Finally, when the screw 803 rotates after backwashing, the sliding column 1007 inside the arc groove 1004 will sequentially slide into the central groove 1002 under the guidance of the inclined groove 1003. When the sliding column 1007 contacts the guiding plate 1005, it will push the guiding plate 1005 to rotate and avoid, so the sliding column 1007 will not slide into the inclined groove 1003. And when separating, the guiding plate 1005 will automatically reset under the action of the torsion spring 1006. Thus, when the rotating seat 1001 rotates in the reverse direction, all the sliding columns 1007 can be moved into the central groove 1002. Therefore, all the sealing plates 1012 will be in an open state, enabling the pressure guiding hole 6 to work properly. 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 adsorb each other, thus driving the second orifice plate 810 to move upward together. And when the second slider 808 moves to the step of the limiting groove 807, it will limit the second orifice plate 810 from continuing to move upward. At this time, when the first orifice plate 804 moves upward, it will separate from the second orifice plate 810. Therefore, the liquid can flow through its through hole, enabling the liquid level gauge to perform normal monitoring work.

[0037] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device.

[0038] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be pointed out that due to the limitation of literal expression and objectively existing infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, retouches or changes can be made, or the above technical features can be combined in an appropriate way; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. A liquid level detection device based on a temperature transmitter, characterized in that It includes a liquid level gauge main body (1) and a backwashing component (8). A protective shell (5) is installed at the lower end of the liquid level gauge main body (1). A pressure guiding hole (6) is provided on the outer side of the lower end of the protective shell (5). A filter plate (7) is arranged inside the protective shell (5). The backwashing component (8) is arranged inside the protective shell (5). The backwashing component (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). One end of the waterproof micro motor (801) is connected to a gear commutator (802), and the gear commutator (802) is fixed to the protective shell (5). The output shaft of the gear commutator (802) is connected to a screw rod (803). A first orifice plate (804) is threadedly connected to the outer side of the upper end of the screw rod (803). A first magnet (805) is fixed to the outer end of the bottom of the first orifice plate (804). A first slider (806) is arranged on the outer side of the first orifice plate (804). A limiting groove (807) is provided on the inner side of the protective shell (5). A second slider (808) is slidably connected to the inside of the limiting groove (807). A rubber pad (809) is fixed to one side of the second slider (808). One end of the second slider (808) is fixed to a second orifice plate (810). A second magnet (811) is fixed to the outer end of the top surface of the second orifice plate (810).

2. The liquid level detection device based on a temperature transmitter according to claim 1, wherein Both the first orifice plate (804) and the second orifice plate (810) are slidably connected to the protective shell (5), and the through holes on the first orifice plate (804) are offset from the through holes on the second orifice plate (810).

3. A liquid level detection device based on a temperature transmitter according to claim 1, characterized in that, The limiting groove (807) is in a stepped shape. The depth of the upper part 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. A liquid level detection device based on a temperature transmitter according to claim 1, characterized in that, A pressure transmitter probe (2) is arranged inside the lower end of the liquid level gauge main body (1). One end of the bottom of the liquid level gauge main body (1) is connected to a temperature transmitter probe (3). The other end of the bottom of the liquid level gauge main body (1) is provided with a waterproof breathable film (4).

5. The liquid level detection device based on a temperature transmitter according to claim 1, characterized in that, The bottom of the screw rod (803) is connected to a jitter component (9). The jitter component (9) includes a fixed seat (901). The fixed seat (901) is fixed to the bottom of the screw rod (803). Two ejector rods (902) are symmetrically arranged on the top of the fixed seat (901). A limiting block (903) is connected to the bottom of the filter plate (7). A guiding block (904) is fixed to 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 rod (803). The limiting blocks (903) are evenly distributed in a circumferential manner at the bottom of the filter plate (7), and the limiting blocks (903) are triangular in shape.

7. The liquid level detection device based on a temperature transmitter according to claim 5, wherein, A telescopic column (905) is arranged on the top of the guiding block (904). A vibration spring (906) is sleeved on the outer side of the telescopic column (905), and the telescopic column (905) is fixed to the protective shell (5).

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

9. The liquid level detection device based on a temperature transmitter according to claim 8, characterized in that, A guide plate (1005) is rotatably connected to the bottom of the rotating seat (1001). A torsion spring (1006) is arranged 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 to the inside of the central groove (1002). A connecting rod (1008) is fixed to the bottom of the connecting rod (1008). A 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).

10. A liquid level detection device based on a temperature transmitter according to claim 9, characterized in that, A driving column (1010) is arranged at the end of the connecting rod (1008). A limiting frame (1011) is slidably connected to the outer side of the driving column (1010). 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).

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