Improved anti-falling liquid level switch device
By introducing protective and auxiliary mechanisms into the liquid level switch device, buffering and supporting stainless steel induction blocks, the loosening and falling problem caused by rapid changes in the liquid level is solved, ensuring the stability of the device.
Patent Information
- Application Number
- CN202510262932.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-05-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the liquid level in the container suddenly rises or falls, the induction block and the guide rod may loosen and fall off due to multiple impacts, causing the guide rod and float to disengage from the support frame.
Protective mechanisms and auxiliary mechanisms are adopted, including support plates, resistance plates, buffer components, buffer hydraulic rods, buffer springs, U-shaped rubber blocks and pull components, to reduce the collision between the stainless steel induction blocks and the mounting frame through buffering and supporting, and prevent loosening and falling off.
It effectively reduces the possibility of loosening and falling between the stainless steel induction block and the guide rod, ensuring the stable operation of the device.
Smart Images
Figure CN120048685A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of liquid level switches, and in particular to an improved anti - detachment liquid level switch device. Background Art
[0002] A liquid level switch, also known as a water level switch or a liquid level sensor, as the name implies, is a switch that controls the on - off of a circuit through the liquid level. Formally, it is mainly divided into contact type and non - contact type. Commonly used non - contact switches include capacitive liquid level switches, and the contact - type floating ball liquid level switch is the most widely used.
[0003] Among them, the structure of the contact - type floating ball liquid level switch includes a support frame, a guide rod, a floating ball, an induction block, and an induction switch. The floating ball is in contact with the liquid surface in the container. When the liquid surface height changes, the floating ball drives the guide rod, and the guide rod drives the induction block past the induction switch, and the induction switch conducts signal control.
[0004] In some usage scenarios, when the liquid surface in the container suddenly rises or falls, and the range of rise or fall exceeds the moving range of the induction block on the support frame, the induction block hits the support frame. Generally, the induction block and the guide rod are fixed by screws in contact. After multiple impacts, the induction block and the guide rod may become loose and fall off, resulting in the guide rod and the floating ball falling off from the support frame. Summary of the Invention
[0005] The purpose of this application is to solve the problem proposed in the above background art that when the liquid surface in the container suddenly rises or falls, and the range of rise or fall exceeds the moving range of the induction block on the support frame, the induction block hits the support frame. Generally, the induction block and the guide rod are fixed by screws in contact. After multiple impacts, the induction block and the guide rod may become loose and fall off, resulting in the guide rod and the floating ball falling off from the support frame. This application provides an improved anti - detachment liquid level switch device.
[0006] This application specifically adopts the following technical solutions to achieve the above purpose: An improved anti - detachment liquid level switch device includes a mounting frame, a fixed frame is fixed on the mounting frame, a guide rod is slidably connected to the mounting frame, a floating ball is fixed at one end of the guide rod, induction switches are installed on both sides of the mounting frame, a stainless - steel induction block is fixed on the guide rod, protective mechanisms are provided at both ends of the mounting frame, and auxiliary mechanisms are provided at both ends of the mounting frame.
[0007] By adopting the above technical solution, when the liquid supporting the float suddenly increases or decreases, and when the liquid level rises or falls beyond the range of the mounting frame, a protective mechanism is installed between the stainless steel sensor blocks, and the protective mechanism buffers and supports the stainless steel sensor blocks that are about to hit the mounting frame, thereby reducing the collision between the stainless steel sensor blocks and the mounting frame. Then the protective mechanism drives the auxiliary mechanism, and the auxiliary mechanism further buffers the stainless steel sensor blocks, thereby reducing the possibility of the stainless steel sensor blocks colliding with the mounting frame when the stainless steel sensor blocks move quickly over a large range, reducing the collision between the stainless steel sensor blocks and the mounting frame, and reducing the possibility of the stainless steel sensor blocks and the guide rod loosening and falling off, thereby causing the guide rod and the float to detach from the mounting frame.
[0008] Furthermore, the protection mechanism includes a support plate arranged on the mounting frame, a resistance plate is arranged on the support plate, both the support plate and the resistance plate are provided with through holes, the guide rod passes through the through holes, and a buffer assembly is arranged between the support plate and the resistance plate.
[0009] By adopting the above technical solution, the stainless steel sensing block directly hits the contact plate. Under the support of the support plate, the contact plate slides directly on the guide rod and squeezes the buffer assembly, so that when the stainless steel sensing block is driven by the guide rod to move over a large range, the possibility of the stainless steel sensing block hitting the mounting frame is reduced, and the possibility of the stainless steel sensing block and the guide rod becoming loose or falling off due to impact is reduced.
[0010] Furthermore, the buffer assembly includes two buffer pressure rods symmetrically arranged between the support plate and the contact plate, the buffer pressure rod is fixedly connected to the support plate, the telescopic end of the buffer pressure rod is fixedly connected to the contact plate, two symmetrical buffer springs are arranged between the buffer plate and the contact plate, both ends of the buffer spring are fixedly connected to the contact plate and the support plate, and the buffer spring is sleeved on the buffer pressure rod.
[0011] By adopting the above technical solution, the contact plate squeezes the buffer pressure rod and the buffer spring at the same time. The buffer spring supports the contact plate and the telescopic end of the buffer pressure rod is retracted into the buffer pressure rod. This can reduce the possibility of the stainless steel sensor block hitting the mounting frame when moving, causing the stainless steel sensor block to loosen and fall off from the guide rod.
[0012] Furthermore, the auxiliary mechanism includes two buffer plates symmetrically arranged on the contact plate, and buffer pads are fixed on the two buffer plates. Two symmetrical U-shaped rubber blocks are arranged between the support plate and the mounting frame, one end of the U-shaped rubber block is fixedly connected to the mounting frame, and the other end of the U-shaped rubber block is fixedly connected to the support plate, and a pulling component is arranged between the buffer plate.
[0013] By adopting the above technical solution, the stainless steel induction block directly abuts against the buffer plate, and the buffer pad on the buffer plate buffers the impact generated by the stainless steel induction block. At the same time, the support plate squeezes the U-shaped rubber block, so as to further relieve the impact generated by the stainless steel induction block, and further reduce the possibility of loosening and falling off between the stainless steel induction block and the guide rod.
[0014] Further, the pulling assembly includes a pulling plate fixed on the buffer plate. Support blocks are rotatably connected to both sides of the pulling plate. The support blocks are fixedly connected to the abutting plate. A pulling wire is fixed between one end of the pulling plate and the U-shaped rubber block.
[0015] By adopting the above technical solution, the buffer plate drives the pulling plate to rotate under the support of the support blocks, and then the pulling plate drives the pulling wire, and the pulling wire drives one end of the U-shaped rubber block to slightly stretch the U-shaped rubber block. Therefore, when the stainless steel induction block repeatedly impacts, the U-shaped rubber block can be kept in a stretched state, improving the buffering ability and further reducing the impact on the stainless steel induction block.
[0016] Further, a reset spring piece is arranged between the buffer plate and the pulling plate, and both ends of the reset spring piece are fixedly connected to the buffer plate and the abutting plate.
[0017] By adopting the above technical solution, when the stainless steel induction block is away from the abutting plate, under the support of the reset spring piece, the buffer plate is kept tilted, so that the buffer plate can be conveniently reset and facilitate the next extrusion of the buffer plate by the stainless steel induction block.
[0018] Further, a plurality of balls are rotatably connected to the inner walls of the through holes of the support plate and the abutting plate, and the balls abut against the guide rod.
[0019] By adopting the above technical solution, when the floating ball drives the guide rod to pass between the support plate and the abutting plate, the balls rotatably connected to the support plate and the abutting plate abut against the guide rod, so as to reduce the friction between the support plate, the abutting plate and the guide rod, and reduce the possibility that the abutting plate and the support plate affect the movement of the guide rod.
[0020] Further, an annular scraping knife is fixed at one end of the mounting bracket close to the floating ball, and the guide rod passes through the annular scraping knife and abuts against the annular scraping knife.
[0021] By adopting the above technical solution, the annular scraping knife scrapes off foreign matters and liquids on the surface of the guide rod, so as to reduce the possibility of affecting the sliding of the guide rod on the mounting bracket.
[0022] In summary, the present application includes at least one of the following beneficial effects; 1. In this application, when the liquid supporting the floating ball suddenly increases or decreases, the floating ball moves rapidly and significantly along with the liquid level. When the liquid level rises or falls beyond the range of the mounting bracket, the stainless-steel induction block directly hits the buffer pad on the buffer plate of the contact plate. The contact plate slides directly on the guide rod, squeezing the buffer hydraulic rod and simultaneously squeezing the buffer spring. The buffer spring supports the contact plate, and at the same time, the telescopic end of the buffer hydraulic rod retracts into the buffer hydraulic rod. The buffer oil in the buffer hydraulic rod converts kinetic energy into heat energy, achieving the purpose of reducing the possibility of the stainless-steel induction block colliding with the mounting bracket when the stainless-steel induction block moves rapidly within a large range, reducing the collision between the stainless-steel induction block and the mounting bracket, and reducing the possibility of loosening and falling off between the stainless-steel induction block and the guide rod, resulting in the separation of the guide rod and the floating ball from the mounting bracket.
[0023] 2. In this application, when the stainless-steel induction block squeezes the buffer plate, the buffer plate drives the pulling plate. The pulling plate rotates under the support of the support block, and then the pulling plate drives the pulling wire. The pulling wire drives one end of the U-shaped rubber block, causing the U-shaped rubber block to slightly stretch. When the stainless-steel induction block squeezes the buffer spring and the buffer hydraulic rod, the buffer spring and the buffer hydraulic rod squeeze the support plate, and the support plate squeezes the U-shaped rubber block for buffering, achieving the purpose of further alleviating the impact generated by the stainless-steel induction block and further reducing the possibility of loosening and falling off between the stainless-steel induction block and the guide rod.
[0024] 3. In this application, when the guide rod moves back and forth on the mounting bracket, the annular scraping shovel scrapes off foreign objects and liquid on the surface of the guide rod, achieving the purpose of reducing the possibility of foreign objects or liquid affecting the sliding of the guide rod on the mounting bracket. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is the first three-dimensional structural schematic diagram of the liquid level switch device in this application; Figure 2 is the second three-dimensional structural schematic diagram of the liquid level switch device in this application; Figure 3 is this application Figure 2 the enlarged schematic diagram at position A; Figure 4 is this application Figure 2 the enlarged schematic diagram at position B; Figure 5 is this application Figure 2 the enlarged schematic diagram at position C.
[0026] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Mounting frame; 2. Fixed frame; 3. Guide rod; 4. Floating ball; 5. Stainless steel induction block; 6. Induction switch; 7. Protection mechanism; 71. Support plate; 72. Contact plate; 73. Through hole; 74. Buffer assembly; 741. Buffer spring; 742. Buffer hydraulic rod; 8. Auxiliary mechanism; 81. Buffer plate; 82. Buffer pad; 83. U-shaped rubber block; 84. Pulling assembly; 841. Pulling plate; 842. Pulling wire; 843. Support block; 844. Reset spring piece; 85. Ball; 9. Ring-shaped scraper. Detailed implementation mode
[0027] The following further elaborates on this application in conjunction with the attached Figure 1 —5 for a more detailed description of this application.
[0028] The embodiment of this application discloses an improved anti-disconnection liquid level switch device.
[0029] Refer to Figure 1 and Figure 2 , an improved anti-disconnection liquid level switch device, including a mounting frame 1, a fixed frame 2 is fixed on the mounting frame 1, a guide rod 3 is slidably connected to the mounting frame 1, a floating ball 4 is fixed at one end of the guide rod 3, induction switches 6 are installed on both sides of the mounting frame 1, a stainless steel induction block 5 is fixed on the guide rod 3, protection mechanisms 7 are provided at both ends of the mounting frame 1, and auxiliary mechanisms 8 are provided at both ends of the mounting frame 1.
[0030] When the hydraulic switch is needed, first connect the inductive switch 6 on the liquid level switch to the required control device, then move the inductive switch 6 to the appropriate position of the mounting frame 1, then fix the fixing frame 2 on the container filled with liquid, let the mounting frame 1 be perpendicular to the surface of the liquid, let the float 4 on the mounting frame 1 contact the liquid and float on the surface of the liquid, when the liquid level rises or falls, the liquid drives the float 4, the float 4 drives the guide rod 3, and the guide rod 3 drives the stainless steel sensor block 5. When the stainless steel sensor block 5 is located between the two inductive switches 6, the two inductive switches 6 send a switch signal to the control device. When the liquid supporting the float 4 suddenly increases or decreases, the float 4 moves rapidly and significantly with the liquid level. When the liquid level rises or falls beyond the range of the mounting frame 1, a protective mechanism 7 is installed between the stainless steel sensor blocks 5, and the protective mechanism 7 is for The stainless steel sensing block 5 that is about to hit the mounting frame 1 is buffered and supported to reduce the collision between the stainless steel sensing block 5 and the mounting frame 1, and then the protective mechanism 7 drives the auxiliary mechanism 8, and the auxiliary mechanism 8 further buffers the stainless steel sensing block 5. When the liquid level changes rapidly and drastically and when the float 4 drives the stainless steel sensing block 5 to move, the protective mechanism 7 is used to buffer and protect the stainless steel sensing block 5. At the same time, the protective mechanism 7 drives the auxiliary mechanism 8, and the auxiliary mechanism 8 further buffers the stainless steel sensing block 5, so that when the stainless steel sensing block 5 moves rapidly over a large range, the possibility of the stainless steel sensing block 5 hitting the mounting frame 1 is reduced, and the collision between the stainless steel sensing block 5 and the mounting frame 1 is reduced, which may cause the stainless steel sensing block 5 to loosen and fall off from the guide rod 3, and cause the guide rod 3 and the float 4 to separate from the mounting frame 1.
[0031] Reference Figure 2 , Figure 3 and Figure 4 The protection mechanism 7 includes a support plate 71 arranged on the mounting frame 1, a resistance plate 72 is arranged on the support plate 71, a through hole 73 is opened on both the support plate 71 and the resistance plate 72, the guide rod 3 passes through the through hole 73, and a buffer component 74 is arranged between the support plate 71 and the resistance plate 72.
[0032] When the float 4 drives the guide rod 3 and the guide rod 3 drives the stainless steel sensing block 5 to move quickly and over a large range, the stainless steel sensing block 5 directly hits the contact plate 72. Under the support of the support plate 71, the contact plate 72 directly slides on the guide rod 3 and squeezes the buffer assembly 74. The buffer assembly 74 supports the contact plate 72 to allow the stainless steel sensing block 5 to buffer when it contacts the contact plate 72. By allowing the contact plate 72 to contact the stainless steel sensing block 5 and then squeezing the buffer assembly 74 under the support of the contact plate 72, the stainless steel sensing block 5 can be driven by the guide rod 3 to move over a large range. The possibility of the stainless steel sensing block 5 hitting the mounting frame 1 is reduced, and the possibility of the stainless steel sensing block 5 and the guide rod 3 becoming loose or falling off due to collision is reduced.
[0033] Referring to Figure 2 、 Figure 3 and Figure 4 ,the buffer assembly 74 includes two buffer hydraulic rods 742 symmetrically arranged between the support plate 71 and the abutting plate 72. The buffer hydraulic rod 742 is fixedly connected to the support plate 71, and the telescopic end of the buffer hydraulic rod 742 is fixedly connected to the abutting plate 72. There are two symmetric buffer springs 741 arranged between the buffer plate 81 and the abutting plate 72. Both ends of the buffer spring 741 are fixedly connected to the abutting plate 72 and the support plate 71, and the buffer spring 741 is sleeved on the buffer hydraulic rod 742.
[0034] When the stainless steel induction block 5 presses against the abutting plate 72, the abutting plate 72 presses against the buffer hydraulic rod 742 and simultaneously presses against the buffer spring 741. The buffer spring 741 supports the abutting plate 72. At the same time, the telescopic end of the buffer hydraulic rod 742 retracts into the buffer hydraulic rod 742, and the buffer oil in the buffer hydraulic rod 742 converts kinetic energy into heat energy. When the stainless steel induction block 5 impacts the abutting plate 72, the abutting plate 72 presses against the buffer spring 741 and the buffer hydraulic rod 742, thereby reducing the possibility that the stainless steel induction block 5 impacts the mounting bracket 1 during movement, resulting in loosening and falling off between the stainless steel induction block 5 and the guide rod 3.
[0035] Referring to Figure 3 、 Figure 4 and Figure 5 ,the auxiliary mechanism 8 includes two buffer plates 81 symmetrically arranged on the abutting plate 72. Buffer pads 82 are fixed on both buffer plates 81. There are two symmetric U-shaped rubber blocks 83 arranged between the support plate 71 and the mounting bracket 1. One end of the U-shaped rubber block 83 is fixedly connected to the mounting bracket 1, and the other end of the U-shaped rubber block 83 is fixedly connected to the support plate 71, and a pulling assembly 84 is arranged between the U-shaped rubber block 83 and the buffer plate 81.
[0036] When the stainless - steel induction block 5 impacts the contact plate 72, the stainless - steel induction block 5 directly contacts the buffer plate 81. The buffer pad 82 on the buffer plate 81 buffers the impact generated on the stainless - steel induction block 5. When the contact plate 72 pushes the buffer spring 741 and the buffer hydraulic rod 742, the buffer spring 741 and the buffer hydraulic rod 742 push the support plate 71, causing the support plate 71 to squeeze the U - shaped rubber block 83, and further buffering is carried out using the U - shaped rubber block 83. While the stainless - steel induction block 5 squeezes the buffer plate 81, the buffer plate 81 drives the pulling assembly 84. The pulling assembly 84 pulls one end of the U - shaped rubber block 83, causing the U - shaped rubber block 83 to slightly expand. When the support plate 71 squeezes the U - shaped rubber block 83, the buffering ability of the U - shaped rubber block 83 is improved, and at the same time, the impact caused by the stainless - steel induction block 5 is further alleviated. By allowing the stainless - steel induction block 5 to impact the contact plate 72, the buffer pad 82 on the buffer plate 81 plays a buffering role. At the same time, the buffer plate 81 drives the pulling assembly 84, causing the U - shaped rubber block 83 to expand, and the U - shaped rubber block 83 supports the support plate 71, thereby being able to further alleviate the impact generated by the stainless - steel induction block 5 and further reducing the possibility of loosening and falling off between the stainless - steel induction block 5 and the guide rod 3.
[0037] Refer to Figure 3 、 Figure 4 and Figure 5 As shown in FIGS.
[0038] When the stainless - steel induction block 5 squeezes the buffer plate 81, the buffer plate 81 drives the pulling plate 841, causing the pulling plate 841 to rotate under the support of the support block 843. Then the pulling plate 841 drives the pulling wire 842, and the pulling wire 842 drives one end of the U - shaped rubber block 83, causing the U - shaped rubber block 83 to slightly expand. When the stainless - steel induction block 5 squeezes the buffer spring 741 and the buffer hydraulic rod 742, the buffer spring 741 and the buffer hydraulic rod 742 squeeze the support plate 71, and the support plate 71 squeezes the U - shaped rubber block 83 for buffering. By allowing the stainless - steel induction block 5 to squeeze the buffer plate 81, the buffer plate 81 drives the pulling plate 841, the pulling plate 841 drives the pulling wire 842, and the pulling wire 842 pulls the U - shaped rubber block 83, causing the U - shaped rubber block 83 to expand. Thus, when the stainless - steel induction block 5 repeatedly impacts, the U - shaped rubber block 83 can maintain an expanded state, improving the buffering ability and further reducing the impact on the stainless - steel induction block 5.
[0039] Refer to Figure 2 and Figure 4, a reset spring piece 844 is arranged between the buffer plate 81 and the pulling plate 841, and both ends of the reset spring piece 844 are fixedly connected to the buffer plate 81 and the contact plate 72. When the stainless steel induction block 5 is away from the contact plate 72, under the support of the reset spring piece 844, the buffer plate 81 drives the pulling plate 841 to rotate under the support of the support block 843, so that the buffer plate 81 remains tilted. By using the support of the reset spring piece 844 for the buffer plate 81, the buffer plate 81 can be conveniently reset, facilitating the next extrusion of the buffer plate 81 by the stainless steel induction block 5.
[0040] Refer to Figure 2 and Figure 4 , a plurality of balls 85 are rotatably connected to the inner walls of the through holes 73 of the support plate 71 and the contact plate 72, and the balls 85 are in contact with the guide rod 3. When the float ball 4 drives the guide rod 3 to pass between the support plate 71 and the contact plate 72, the balls 85 rotatably connected to the support plate 71 and the contact plate 72 are in contact with the guide rod 3, and the balls 85 support the guide rod 3. By placing the balls 85 between the guide rod 3 and the support plate 71 and the contact plate 72, the friction between the support plate 71, the contact plate 72 and the guide rod 3 can be reduced, and the possibility of the contact plate 72 and the support plate 71 affecting the movement of the guide rod 3 can be reduced.
[0041] Refer to Figure 1 , Figure 2 and Figure 3 , a ring-shaped scraping knife 9 is fixed to one end of the mounting bracket 1 close to the float ball 4, and the guide rod 3 passes through the ring-shaped scraping knife 9 and is in contact with the ring-shaped scraping knife 9. When the guide rod 3 moves back and forth on the mounting bracket 1, the ring-shaped scraping knife scrapes off foreign matters and liquids on the surface of the guide rod 3. By using the ring-shaped scraping knife to scrape off foreign matters and liquids on the guide rod 3, the possibility of affecting the sliding of the guide rod 3 on the mounting bracket 1 can be reduced.
[0042] Working principle: When the hydraulic switch is needed, first connect the induction switch 6 on the liquid level switch to the required control device, then move the induction switch 6 to the appropriate position of the mounting frame 1, and then fix the fixing frame 2 on the container filled with liquid, so that the mounting frame 1 is perpendicular to the surface of the liquid, and the float 4 on the mounting frame 1 is in contact with the liquid and floats on the surface of the liquid. When the liquid level rises or falls, the liquid drives the float 4, the float 4 drives the guide rod 3, and the guide rod 3 drives the stainless steel sensor block 5. When the stainless steel sensor block 5 is located between the two induction switches 6, the two induction switches 6 send a switch signal to the control device. When the liquid supporting the float 4 suddenly increases or decreases, the float 4 moves rapidly and significantly with the liquid level. When the liquid level rises or falls beyond the range of the mounting frame 1, the stainless steel sensor block 5 directly hits the contact plate 72 for buffering. On the buffer pad 82 of plate 81, the contact plate 72 slides directly on the guide rod 3, and the contact plate 72 squeezes the buffer hydraulic rod 742 and the buffer spring 741 at the same time. The buffer spring 741 supports the contact plate 72, and the telescopic end of the buffer hydraulic rod 742 is retracted into the buffer hydraulic rod 742. The buffer oil in the buffer hydraulic rod 742 converts kinetic energy into heat energy. At the same time, the buffer plate 81 drives the pulling plate 841, so that the pulling plate 841 rotates under the support of the support block 843, and then the pulling plate 841 drives the pulling wire 842, and the pulling wire 842 drives one end of the U-shaped rubber block 83 to make the U-shaped rubber block 83 stretch slightly. When the stainless steel sensor block 5 squeezes the buffer spring 741 and the buffer hydraulic rod 742, the buffer spring 741 and the buffer hydraulic rod 742 squeeze the support plate 71, and the support plate 71 squeezes the U-shaped rubber block 83 for buffering.
Claims
1. An improved anti-drop liquid level switch device, comprising a mounting frame (1), characterized in that: A fixing frame (2) is fixed on the mounting frame (1), a guide rod (3) is slidably connected to the mounting frame (1), a floating ball (4) is fixed to one end of the guide rod (3), induction switches (6) are installed on both sides of the mounting frame (1), a stainless steel induction block (5) is fixed on the guide rod (3), protective mechanisms (7) are arranged at both ends of the mounting frame (1), and auxiliary mechanisms (8) are arranged at both ends of the mounting frame (1).
2. An improved anti-dropout liquid level switch device according to claim 1, characterized in that: The protection mechanism (7) comprises a support plate (71) arranged on the mounting frame (1), a contact plate (72) being arranged on the support plate (71), through holes (73) being provided on both the support plate (71) and the contact plate (72), the guide rod (3) passing through the through holes (73), and a buffer assembly (74) being arranged between the support plate (71) and the contact plate (72).
3. An improved anti-dropout liquid level switch device according to claim 2, characterized in that: The buffer assembly (74) comprises two buffer hydraulic rods (742) symmetrically arranged between the support plate (71) and the contact plate (72); the buffer hydraulic rods (742) are fixedly connected to the support plate (71); the telescopic ends of the buffer hydraulic rods (742) are fixedly connected to the contact plate (72); two symmetrical buffer springs (741) are arranged between the buffer plate (81) and the contact plate (72); both ends of the buffer springs (741) are fixedly connected to the contact plate (72) and the support plate (71); and the buffer springs (741) are sleeved on the buffer hydraulic rods (742).
4. The improved anti-dropout liquid level switch device according to claim 3 is characterized in that: The auxiliary mechanism (8) comprises two buffer plates (81) symmetrically arranged on the abutment plate (72), and buffer pads (82) are fixed on the two buffer plates (81). Two symmetrical U-shaped rubber blocks (83) are arranged between the support plate (71) and the mounting frame (1), and one end of the U-shaped rubber block (83) is fixedly connected to the mounting frame (1), and the other end of the U-shaped rubber block (83) is fixedly connected to the support plate (71), and a pulling assembly (84) is arranged between the buffer plate (81).
5. The improved anti-dropout liquid level switch device according to claim 4 is characterized in that: The pulling assembly (84) comprises a pulling plate (841) fixed on the buffer plate (81), both sides of the pulling plate (841) are rotatably connected to support blocks (843), the support blocks (843) are fixedly connected to the contact plate (72), and a pulling steel wire (842) is fixed between the pulling plate (841) and one end of the U-shaped rubber block (83).
6. The improved anti-dropout liquid level switch device according to claim 5 is characterized in that: A return spring sheet (844) is provided between the buffer plate (81) and the pulling plate (841), and both ends of the return spring sheet (844) are fixedly connected to the buffer plate (81) and the contact plate (72).
7. An improved anti-dropout liquid level switch device according to claim 6, characterized in that: A plurality of balls (85) are rotatably connected to the inner walls of the through holes (73) of the support plate (71) and the abutment plate (72), and the balls (85) abut against the guide rod (3).
8. The improved anti-dropout liquid level switch device according to claim 2 is characterized in that: An annular scraper (9) is fixed to one end of the mounting frame (1) close to the floating ball (4), and the guide rod (3) passes through the annular scraper (9) and contacts the annular scraper (9).