Corrosion-resistant Hall sensor

Abstract

The utility model discloses a corrosion-resistant Hall sensor, which relates to the technical field of Hall sensors and comprises a fixing frame, the top end of the fixing frame is fixedly connected with a connecting column, the top end of the connecting column is in threaded connection with a threaded column, and the top end of the threaded column is provided with a liquid level sensor body. By the adoption of the structure, the connecting column and the connecting block penetrate through the container, then a user clamps the second clamping block into the circular groove through the first clamping groove, then the first clamping block is rotated through the protruding block, the second clamping block is rotated to the position not corresponding to the second clamping groove, the second rubber pad has good elasticity, and the second clamping block is clamped into the circular groove through the second clamping block. And through downward pressing of a limiting block, the position of a connecting block can be effectively clamped, then the position fixing stability of the fixing frame can be effectively improved, and when the fixing frame needs to be detached for maintenance, a first clamping block is rotated through a protruding block, and a second clamping block is rotated to the position corresponding to a second clamping groove.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hall sensor technical field, especially relate to a kind of corrosion-resistant hall sensor. BACKGROUND

[0002] Hall liquid level sensor is a kind of sensor using the Hall effect of semiconductor material to measure liquid level, photoelectric liquid level sensor has simple structure, positioning precision is high, power consumption is less, small size and many other advantages, sensor and other characteristics of medium, including temperature, pressure, density, electric parameter are irrelevant, so liquid level detection is accurate, repeat accuracy is high, response speed is fast, liquid level control is very accurate, including integrated water level sensor, separated water level sensor and multipoint water level sensor, according to the demand of working environment, the surface of its hall sensor will be coated with anticorrosive coating, to improve the corrosion resistance of itself, to improve its service life.

[0003] The Chinese patent with publication number "CN221006498U" discloses a kind of corrosion-resistant hall liquid level sensor, including fixed frame, the one side of the fixed frame is fixedly connected with connecting column, the one end of the connecting column is threadedly connected with liquid level sensor body, the outside of the one side of the fixed frame is fixedly connected with screw rod respectively, the outer wall of the screw rod is sleeved with sealing ring, the outer wall of the one end of the screw rod is threadedly connected with screw cap.

[0004] However, this sensor still has some shortcomings, when installing fixed frame, user will first pass through container by screw rod and connecting column, then the position is fixed by screw cap, when user needs to disassemble fixed frame to maintain it later, user also needs to screw down each screw cap by thread fixed mode, the thread fixed of screw cap is easy to loosen, and also easy to cause abrasion to the fixed point of container, while reducing the fixed stability of fixed frame point, it is also not easy for user to disassemble fixed frame to maintain it later. UTILITY MODEL CONTENTS

[0005] In view of the problems mentioned in the background art, the utility model aims to provide a kind of corrosion-resistant hall sensor to solve the problems raised in the above background art.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] The utility model provides a kind of corrosion-resistant hall sensor, including fixed frame, the top of fixed frame is fixedly connected with connecting column, the top of connecting column is threadedly connected with threaded column, the top of threaded column is installed with liquid level sensor body, the top of fixed frame is fixedly connected with connecting block, first clamping groove is set on the top of connecting block, second clamping groove is set on the inner wall of first clamping groove, circular groove is set on the inner side bottom of first clamping groove, clamping spring is installed on the inner side bottom of circular groove, first clamping block is clamped in the first clamping groove, second clamping block is fixedly connected with the second clamping groove on the outer wall of first clamping block, second clamping block is clamped in the circular groove, the bottom of second clamping block is clamped in the top of clamping spring, the top of first clamping block is fixedly connected with limiting block, the bottom of limiting block is fixedly connected with second rubber pad, first clamping block is located in the inner side of second rubber pad, the top of first clamping block is fixedly connected with protruding block, the inside of fixed frame is threadedly connected with installation shell, the inner side of installation shell is installed with electric push rod, one side of electric push rod is fixedly connected with support block, the bottom of installation shell is threadedly connected with connecting plate, the bottom of connecting plate is slidably connected with mounting plate, mounting plate is inserted in the bottom of support block, the bottom of mounting plate is installed with detection head, when installing fixed frame, first, pass through container by connecting column and connecting block, then second, the second clamping block is clamped into circular groove by first clamping groove by user, then third, the second clamping block is rotated to the position corresponding with second clamping groove by rotating first clamping block by the gripping point of protruding block, then fourth, the position of second clamping block is limited by clamping spring, so that first clamping block can not be ejected by first clamping groove, the second rubber pad has good elasticity, and the position of connecting block can be effectively clamped by the depression of limiting block, and the surface of container can be avoided by second rubber pad, so that the stability of fixed frame position can be effectively improved, when the fixed frame needs to be disassembled for maintenance, the second clamping block is extracted by rotating first clamping block by protruding block, and rotating second clamping block to the position corresponding with second clamping groove.

[0008] As a preferred technical solution, the outer wall of the connecting block is fixedly connected with a first rubber pad that matches the second rubber pad, the bottom of the first rubber pad is attached to the top of the fixed frame, the position of the first rubber pad is symmetrical with the position of the second rubber pad, the outer wall of the connecting column is fixedly connected with a first sealing ring, the bottom of the first sealing ring is attached to the top of the fixed frame, the bottom of the liquid level sensor body is fixedly connected with a second sealing ring, the position of the second sealing ring is symmetrical with the position of the first sealing ring, the installation of the second rubber pad, the first sealing ring and the second sealing ring can effectively prevent the installation points of the connecting column and the connecting block from colliding or wearing with the inner and outer walls of the container, and can also effectively improve the sealing performance of the connection points.

[0009] As a preferred technical solution, a thread groove matching the threaded column is provided at the top of the connecting column, and the bottom end of the threaded column is threadedly connected to the inner side of the thread groove. The liquid level sensor body is threadedly connected to the top of the connecting column through the threaded column and the threaded groove. By screwing in the threaded column, the position of the liquid level sensor body can be effectively fixed to prevent it from being displaced. When the liquid level sensor needs to be disassembled for maintenance later, the threaded column can be unscrewed out of the thread groove through the thread principle.

[0010] As a preferred technical solution, a first screw hole is provided on the outer wall of the fixing frame, and the first screw holes both pass through the outer sides of the fixing frame and the mounting shell. The inner sides of the first screw holes are threadedly connected to a first bolt, and one side of the first bolt is threadedly connected to the interior of the mounting shell through the first screw hole. The mounting shell is threadedly connected to the interior of the fixing frame through the first screw hole and the first bolt. By screwing in the first bolt, the position of the mounting shell can be effectively fixed, and displacement of the mounting shell can be prevented. When the mounting shell needs to be removed, the first bolt can be screwed out of the first screw hole to remove the mounting shell from the interior of the fixing frame.

[0011] As a preferred technical solution, a first sliding groove matching the support block is provided on the inner wall of the mounting shell, and the outer side of the support block is slidably connected to the inner wall of the mounting shell through the first sliding groove. By opening the first sliding groove, the position and angle of the support block movement can be effectively limited, thereby improving the stability of the support block position adjustment.

[0012] As an optimal technical solution, a telescopic rod is fixedly connected to one side of the support block, and the position of the telescopic rod is symmetrical with the position of the telescopic axis of the electric push rod. One side of the telescopic rod is fixedly connected to the inner wall of the mounting shell. Through the fixation of the telescopic rod, its extension and retraction can provide secondary limit support to one side of the support block, and at the same time can also pull the moving position of the support block, thereby further improving the stability of the support block position adjustment.

[0013] As an optimal technical solution, a second screw hole is provided at the bottom end of the connecting plate, and the second screw holes penetrate the bottom ends of the connecting plate and the mounting shell. The inner side of the second screw hole is threadedly connected to a second bolt, and the top end of the second bolt is threadedly connected to the interior of the mounting shell through the second screw hole. The connecting plate is threadedly connected to the bottom end of the mounting shell through the second screw hole and the second bolt. By screwing in the second bolt, the position of the connecting plate can be effectively limited and fixed, which can prevent the connecting plate from being displaced. When the connecting plate needs to be removed, the second bolt can be screwed out of the second screw hole.

[0014] As a preferred technical scheme, the bottom end of the support block is provided with a slot, the top end of the mounting plate is fixedly connected with a plug plate matched with the slot, the plug plate is plugged into the inside of the slot, and the top end of the mounting plate is plugged into the bottom end of the support block through the slot and the plug plate.

[0015] As a preferred technical scheme, the bottom end of the support block is provided with a slot, the top end of the mounting plate is fixedly connected with a plug plate matched with the slot, the plug plate is plugged into the inside of the slot, and the top end of the mounting plate is plugged into the bottom end of the support block through the slot and the plug plate.

[0016] In summary, the utility model mainly has the following beneficial effects:

[0017] First, when installing the fixing frame, the connecting column and the connecting block are first passed through the container, then the user clamps the second clamping block into the circular groove through the first clamping groove, then the second clamping block is rotated to a position not corresponding to the second clamping groove through the rotation of the convex block and the first clamping block, and then the position is limited through the clamping spring, so that the first clamping block cannot be popped out, the second rubber pad has good elasticity, and the position of the connecting block can be effectively clamped through the depression of the limiting block, and the second rubber pad can also avoid friction between the limiting block and the surface of the container, so that the stability of the position of the fixing frame can be effectively improved.

[0018] Second, when the position of the detection head needs to be adjusted, the user can start the electric push rod, the electric push rod can drive the support block to move, the first sliding slot and the telescopic rod can effectively limit the position and angle of the sliding of the support block, the position of the movement of the support block can be pulled, and the stability of the position adjustment of the support block can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2It is the connecting column structure schematic diagram of the utility model;

[0021] Figure 3 It is the A part enlarged structure schematic diagram of the utility model Figure 2 ;

[0022] Figure 4 It is the first clamping block structure schematic diagram of the utility model;

[0023] Figure 5 It is the liquid level sensor body structure schematic diagram of the utility model;

[0024] Figure 6 It is the bottom end structure schematic diagram of the utility model;

[0025] Figure 7 It is the connecting plate structure schematic diagram of the utility model;

[0026] Figure 8 It is the installation shell structure schematic diagram of the utility model.

[0027] Fig. 1, fixed frame, 2, first sealing ring, 3, connecting column, 4, thread groove, 5, liquid level sensor body, 6, threaded column, 7, second sealing ring, 8, first rubber pad, 9, connecting block, 10, first clamping groove, 11, second clamping groove, 12, circular groove, 13, clamping spring, 14, first clamping block, 15, second clamping block, 16, limiting block, 17, second rubber pad, 18, protruding block, 19, first screw hole, 20, first bolt, 21, installation shell, 22, electric push rod, 23, first sliding groove, 24, supporting block, 25, insertion slot, 26, telescopic rod, 27, second screw hole, 28, connecting plate, 29, second bolt, 30, mounting plate, 31, plugboard, 32, probe head, 33, second sliding groove. Specific implementation

[0028] Embodiment

[0029] Reference Figures 1 to 8The corrosion-resistant Hall sensor described in this embodiment includes a fixing frame 1, the top of the fixing frame 1 is fixedly connected to a connecting column 3, the top of the connecting column 3 is threadedly connected to a threaded column 6, the top of the threaded column 6 is installed with a liquid level sensor body 5, the top of the fixing frame 1 is fixedly connected to a connecting block 9, the top of the connecting block 9 is provided with a first card slot 10, the inner wall of the first card slot 10 is provided with a second card slot 11, the inner bottom end of the first card slot 10 is provided with a circular groove 12, the inner bottom end of the circular groove 12 is installed with a retaining spring 13, the inner side of the first card slot 10 is clamped with a first card block 14, the outer wall of the first card block 14 is fixedly connected with a second card block 15 matching the second card slot 11, the second card block 15 is clamped to the inner side of the circular groove 12, and the second card block 15 The bottom end is clamped to the top of the clamping spring 13, the top of the first clamping block 14 is fixedly connected to the limit block 16, the bottom end of the limit block 16 is fixedly connected to the second rubber pad 17, the first clamping block 14 is located on the inner side close to the second rubber pad 17, the top of the first clamping block 14 is fixedly connected to the protrusion 18, the internal thread of the fixing frame 1 is connected to the mounting shell 21, the inner side of the mounting shell 21 is installed with an electric push rod 22, one side of the electric push rod 22 is fixedly connected to the support block 24, the bottom end of the mounting shell 21 is threadedly connected to the connecting plate 28, the bottom end of the connecting plate 28 is slidably connected to the mounting plate 30, the mounting plate 30 is plugged into the bottom end of the support block 24, and the bottom end of the mounting plate 30 is installed with a detection head 32. The Hall effect refers to the Lorentz force on electrons in a conductor in a magnetic field. The electric field phenomenon that occurs, specifically, when current passes through a conductor, if a magnetic field is applied in the vertical direction of the plane of the conductor, a potential difference will be generated on the upper and lower sides of the conductor. This phenomenon is called the Hall effect. In the Hall liquid level sensor, a magnetic field source is usually included to generate a stable magnetic field inside the sensor. When current passes through the conductor in the sensor, it is usually a semiconductor material. The electrons move in a directed manner in the conductor. When the magnetic field acts on the electrons in the current, the electrons are deflected by the Lorentz force. This deflection causes the electrons to accumulate on one side of the conductor, forming a potential difference. This potential difference is the Hall voltage, and the Hall sensor will output this voltage value. The magnitude of this voltage value is proportional to the strength of the magnetic field. Therefore, By measuring the Hall voltage, the size of the magnetic field can be calculated. In the liquid level control system, the Hall sensor is usually installed on the side wall of the container and in contact with the liquid. When the horizontal state of the liquid changes, the distance between the liquid and the Hall sensor will change, thereby changing the influence range and intensity of the magnetic field. In this way, the voltage difference generated on both sides of the Hall sensor will also change. By measuring this voltage difference, the horizontal state of the liquid, that is, the liquid level, can be accurately measured. In the signal detection, the sensor circuit will receive and detect the voltage difference signal. In the signal processing, the received voltage difference signal will be amplified and filtered to enhance the signal strength and remove noise interference, thereby improving the accuracy and stability of the signal. In the data conversion, after processing,The circuit converts the voltage difference signal into a digital signal, which is convenient for subsequent control and display. In the control feedback, the converted digital signal is compared with the set liquid level threshold value. When the liquid level exceeds or is lower than the set threshold value, the control system will start or stop the corresponding control device as needed to realize the adjustment and control of the liquid level.

[0030] With reference to Figures 1 to 5 The outer wall of the connecting block 9 is fixedly connected with a first rubber pad 8 matched with the second rubber pad 17. The bottom end of the first rubber pad 8 is attached to the top end of the fixed frame 1. The position of the first rubber pad 8 is symmetrical to the position of the second rubber pad 17. The outer wall of the connecting column 3 is fixedly connected with a first sealing ring 2. The bottom end of the first sealing ring 2 is attached to the top end of the fixed frame 1. The bottom end of the liquid level sensor body 5 is fixedly connected with a second sealing ring 7. The position of the second sealing ring 7 is symmetrical to the position of the first sealing ring 2. Due to the existence of the second rubber pad 17, the first sealing ring 2 and the second sealing ring 7, the installation points of the connecting column 3 and the connecting block 9 can effectively avoid bumping or wear with the inner and outer walls of the container, and the sealing performance of the connection points can be effectively improved.

[0031] With reference to Figure 2 And Figure 5 The top end of the connecting column 3 is provided with a threaded groove 4 matched with a threaded column 6. The bottom end of the threaded column 6 is threadedly connected to the inner side of the threaded groove 4. The liquid level sensor body 5 is threadedly connected to the top end of the connecting column 3 through the threaded column 6 and the threaded groove 4. Due to the existence of the threaded column 6, the threaded column 6 can effectively limit and fix the position of the liquid level sensor body 5 when screwed in, thereby avoiding displacement. When it is necessary to individually disassemble the liquid level sensor body 5, the threaded column 6 can be unscrewed through the threaded principle, which is also conducive to the user's later maintenance and treatment of the liquid level sensor body 5.

[0032] With reference to Figure 1 And Figure 6 And Figure 8 The outer wall of the fixed frame 1 is provided with a first screw hole 19. The first screw hole 19 penetrates the outer sides of the fixed frame 1 and the mounting shell 21. The inner side of the first screw hole 19 is threadedly connected with a first bolt 20. One side of the first bolt 20 is threadedly connected to the inside of the mounting shell 21 through the first screw hole 19. The mounting shell 21 is threadedly connected to the inside of the fixed frame 1 through the first screw hole 19 and the first bolt 20. Due to the existence of the first bolt 20, the first bolt 20 can effectively limit and fix the position of the mounting shell 21 when screwed in, thereby avoiding displacement. When it is necessary to disassemble the mounting shell 21, the first bolt 20 can be unscrewed from the first screw hole 19, which is also conducive to the user's later maintenance and treatment of the structure inside the mounting shell 21.

[0033] With reference to Figure 8The inner wall of the mounting shell 21 is provided with a first sliding groove 23 matched with the supporting block 24, the outer side of the supporting block 24 is slidably connected to the inner wall of the mounting shell 21 through the first sliding groove 23, one side of the supporting block 24 is fixedly connected with an extension rod 26, the position of the extension rod 26 is symmetrical to the position of the extension shaft of the electric push rod 22, one side of the extension rod 26 is fixedly connected to the inner wall of the mounting shell 21, the extension rod 26 comprises a movable rod and a sleeve rod, the movable rod is sleeved on the inner side of the sleeve rod, one side of the sleeve rod is fixedly connected to the inner wall of the mounting shell 21, and the other side of the movable rod is fixedly connected to one side of the supporting block 24. Due to the first sliding groove 23, the position and angle of the supporting block 24 can be effectively limited, and the stability of the position adjustment of the supporting block 24 can be improved. Due to the existence of the extension rod 26, the extension rod 26 can secondarily limit and support one side of the supporting block 24, and can also pull the position of the supporting block 24, and the stability of the position adjustment of the supporting block 24 can be improved again.

[0034] Reference Figure 6 With Figure 7 The bottom end of the connecting plate 28 is provided with a second threaded hole 27, the second threaded hole 27 penetrates the bottom end of the connecting plate 28 and the mounting shell 21, the inner side of the second threaded hole 27 is threadedly connected with a second bolt 29, the top end of the second bolt 29 is threadedly connected to the inside of the mounting shell 21 through the second threaded hole 27, and the connecting plate 28 is threadedly connected with the bottom end of the mounting shell 21 through the second threaded hole 27 and the second bolt 29. Due to the existence of the second bolt 29, the screwing of the second bolt 29 can effectively limit and fix the position of the connecting plate 28, so that displacement of the connecting plate 28 can be avoided, and when the connecting plate 28 needs to be disassembled, the second bolt 29 can be screwed out of the second threaded hole 27, which is also beneficial to the maintenance of the structure on the connecting plate 28 in the later stage.

[0035] Reference Figures 6 to 8 The bottom end of the supporting block 24 is provided with a slot 25, the top end of the mounting plate 30 is fixedly connected with a plug plate 31 matched with the slot 25, the plug plate 31 is inserted into the inside of the slot 25, and the top end of the mounting plate 30 is inserted into the bottom end of the supporting block 24 through the slot 25 and the plug plate 31. Due to the existence of the plug plate 31, the insertion of the plug plate 31 can effectively butt joint the mounting plate 30 and the supporting block 24, when the position of the detection head 32 needs to be adjusted, the electric push rod 22 is started to push the supporting block 24, the supporting block 24 can drive the mounting plate 30 to move, and the mounting plate 30 can drive the detection head 32 to move, so that the position of the detection head 32 can be conveniently adjusted.

[0036] Reference Figure 6The bottom end of the connecting plate 28 is provided with a second sliding groove 33 matched with the mounting plate 30, and the top end of the mounting plate 30 is slidably connected to the bottom end of the connecting plate 28 through the second sliding groove 33. The second sliding groove 33 can effectively limit the position and angle of the mounting plate 30, thereby effectively improving the stability of the position adjustment of the detection head 32.

[0037] Use principle and advantage: in use, first pass through the container through the connecting column 3 and connecting block 9, then the user is through the first card slot 10 and second card block 15 card into the circular slot 12, then through the convex block 18 rotating first card block 14, second card block 15 is rotated to the position that does not meet with the second slot 11, then through the card spring 13 to its position is limited, in turn can avoid first card block 14 is ejected, its second rubber pad 17 has good elasticity, then through the lower pressure of limiting block 16, so that the position of connecting block 9 can be effectively clamped, at the same time, the second rubber pad 17 can also avoid limiting block 16 and the surface of the container rub, in turn can effectively improve the stability of the fixed position of the fixed frame 1, when the fixed frame 1 needs to be disassembled to maintain it, through the convex block 18 rotating first card block 14, second card block 15 is rotated to the position corresponding to the second slot 11, then directly first card block 14 can be extracted, in turn also solves the problem of not easy to disassemble the fixed frame 1 to maintain it, because of the existence of second rubber pad 17, first sealing ring 2 and second sealing ring 7, in turn can effectively avoid the installation point of connecting column 3 and connecting block 9 and the inner and outer wall of the container knock or wear, at the same time, it can effectively improve the sealing of the connecting point, because of the existence of threaded column 6, the threaded column 6 can be screwed into the position of the liquid level sensor body 5, in turn can avoid its displacement, when the liquid level sensor body 5 needs to be disassembled individually, the threaded column 6 can be unscrewed, at the same time, it is also beneficial to the user to maintain the liquid level sensor body 5 later, the existence of first bolt 20, the first bolt 20 can be screwed into the position of the installation shell 21, can avoid the displacement of the installation shell 21, when the installation shell 21 needs to be disassembled, the first bolt 20 can be unscrewed from the first screw hole 19, at the same time, it is also beneficial to the user to maintain the structure inside the installation shell 21 later, because of the existence of first sliding groove 23, the position and angle of the movement of support block 24 can be effectively limited, in turn can improve the stability of the position adjustment of support block 24, because of the existence of telescopic rod 26, its telescopic can be positioned on one side of support block 24, at the same time, it can also pull the position of support block 24, in turn can improve the stability of the position adjustment of support block 24, because of the existence of second bolt 29, the second bolt 29 can be screwed into the position of connecting plate 28, can avoid the displacement of connecting plate 28, when the connecting plate 28 needs to be disassembled, the second bolt 29 can be unscrewed from the second screw hole 27, at the same time, it is also beneficial to the user to maintain the structure on the connecting plate 28 later, because of the existence of plug plate 31, the insertion of plug plate 31 can effectively butt joint the installation plate 30 and support block 24, when the position of probe head 32 needs to be adjusted, the electric push rod 22 is started to push the support block 24, the support block 24 can drive the installation plate 30 to move, the installation plate 30 can drive the probe head 32 to move, in turn can achieve the purpose of conveniently adjusting the position of probe head 32.

Claims

1. A corrosion-resistant Hall effect sensor, comprising a fixing frame, characterized in that: The top of the fixing frame is fixedly connected with a connecting column, the top of the connecting column is threadedly connected with a threaded column, the top of the threaded column is installed with a liquid level sensor body, the top of the fixing frame is fixedly connected with a connecting block, the top of the connecting block is provided with a first clamping groove, the inner wall of the first clamping groove is provided with a second clamping groove, the inner bottom end of the first clamping groove is provided with a circular groove, the inner bottom end of the circular groove is installed with a clamping spring, the inner side of the first clamping groove is clamped with a first clamping block, the outer wall of the first clamping block is fixedly connected with a second clamping block matching the second clamping groove, the second clamping block is clamped with the inner side of the circular groove, and the first The bottom ends of the two clamping blocks are clamped to the top ends of the clamping springs, the top ends of the first clamping blocks are fixedly connected to the limiting block, the bottom ends of the limiting block are fixedly connected to the second rubber pad, the first clamping block is located on the inner side close to the second rubber pad, the top ends of the first clamping block are fixedly connected to a protrusion, the internal threads of the fixing frame are connected to a mounting shell, an electric push rod is installed on the inner side of the mounting shell, one side of the electric push rod is fixedly connected to a support block, the bottom end of the mounting shell is threadedly connected to a connecting plate, the bottom end of the connecting plate is slidably connected to a mounting plate, the mounting plate is plugged into the bottom end of the support block, and a detection head is installed on the bottom end of the mounting plate.

2. The corrosion-resistant Hall sensor according to claim 1, characterized in that: A first rubber pad matching the second rubber pad is fixedly connected to the outer wall of the connecting block, the bottom end of the first rubber pad is in contact with the top of the fixing frame, and the position of the first rubber pad is symmetrical with that of the second rubber pad. A first sealing ring is fixedly connected to the outer wall of the connecting column, the bottom end of the first sealing ring is in contact with the top of the fixing frame, and a second sealing ring is fixedly connected to the bottom end of the liquid level sensor body, and the position of the second sealing ring is symmetrical with that of the first sealing ring.

3. The corrosion-resistant Hall sensor according to claim 1, characterized in that: The top of the connecting column is provided with a thread groove matching the threaded column, the bottom end of the threaded column is threadedly connected to the inner side of the thread groove, and the liquid level sensor body is threadedly connected to the top of the connecting column through the threaded column and the thread groove.

4. The corrosion-resistant Hall sensor according to claim 1, characterized in that: A first screw hole is provided on the outer wall of the fixing bracket, and the first screw hole passes through the outer sides of the fixing bracket and the mounting shell. A first bolt is threadedly connected to the inner side of the first screw hole, and one side of the first bolt is threadedly connected to the interior of the mounting shell through the first screw hole. The mounting shell is threadedly connected to the interior of the fixing bracket through the first screw hole and the first bolt.

5. The corrosion-resistant Hall sensor according to claim 1, characterized in that: A first sliding groove matching the support block is provided on the inner wall of the installation shell, and the outer side of the support block is slidably connected to the inner wall of the installation shell through the first sliding groove.

6. The corrosion-resistant Hall sensor according to claim 1, characterized in that: One side of the support block is fixedly connected to a telescopic rod, the position of the telescopic rod is symmetrical to the position of the telescopic axis of the electric push rod, and one side of the telescopic rod is fixedly connected to the inner wall of the mounting shell.

7. The corrosion-resistant Hall sensor according to claim 1, characterized in that: A second screw hole is provided at the bottom end of the connecting plate, and the second screw hole passes through the connecting plate and the bottom end of the mounting shell. A second bolt is threadedly connected to the inner side of the second screw hole, and the top end of the second bolt is threadedly connected to the inside of the mounting shell through the second screw hole. The connecting plate is threadedly connected to the bottom end of the mounting shell through the second screw hole and the second bolt.

8. The corrosion-resistant Hall sensor according to claim 1, characterized in that: A slot is provided at the bottom end of the support block, and a plug-in plate matching the slot is fixedly connected to the top end of the mounting plate. The plug-in plate is inserted into the slot, and the top end of the mounting plate is inserted into the bottom end of the support block through the slot and the plug-in plate.

9. The corrosion-resistant Hall sensor according to claim 1, characterized in that: The bottom end of the connecting plate is provided with a second sliding groove that matches the mounting plate, and the top end of the mounting plate is slidably connected to the bottom end of the connecting plate through the second sliding groove.

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