Vacuum coating silicone oil stable supply system based on floating ball liquid level meter

Abstract

The invention relates to the technical field of vacuum coating, in particular to a vacuum coating silicone oil stable supply system based on a floating ball liquid level meter, which comprises an oil tank, a floating ball body, a scraping ring, a sensor detection piece and a lifting frame, a first cavity used for storing silicone oil is formed in the oil tank, second cavities are formed in the two ends of the oil tank, one side of each second cavity is communicated with the first cavity, and the other side of each second cavity penetrates through the outer surface of the oil tank. The floating ball body is mounted in the second cavity and can move up and down in the second cavity, and the floating ball body can rotate when being influenced by scouring and flowing of silicone oil; the scraping ring is arranged on the outer surface of the floating ball body in a sleeving mode, and when the floating ball body moves up and down and rotates due to changes and flowing of the amount of silicone oil in the oil tank, the scraping ring can scrape the surface of the second cavity; the sensor detection piece is installed at the end of the oil tank, and one side of the sensor is clamped in the second cavity.

Description

Technical Field

[0001] This invention relates to the field of vacuum coating technology, and in particular to a stable supply system for silicone oil in vacuum coating based on a float level gauge. Background Technology

[0002] In vacuum coating processes, silicone oil serves as a crucial medium (such as a lubricant, sealant, or auxiliary film-forming material), and the stability of its supply directly affects the uniformity, adhesion, and product yield of the coating layer. Existing silicone oil supply systems for vacuum coating suffer from the following problems: The liquid level detection of existing vacuum coating silicone oil supply systems mostly relies on traditional mechanical floats. However, due to the high viscosity of silicone oil, traditional mechanical floats are prone to local adhesion and movement stagnation between the float and the inner wall of the detection channel, resulting in delayed or distorted liquid level signal feedback. Due to the high viscosity and low volatility of silicone oil, it is very easy for it to continuously accumulate on the inner wall of the liquid level detection channel (such as a simple cavity or straight pipe channel) when flowing in the existing supply system. As the running time increases, the residual silicone oil will gradually solidify or thicken, which will reduce the cross-sectional area of ​​the flow channel, leading to increased silicone oil flow resistance and fluctuations in supply pressure. On the other hand, it will further aggravate the risk of jamming of traditional detection components (such as ordinary floats). Existing supply systems often use a single-cavity design for their oil tanks, and the layout of the oil inlet and outlet lacks a targeted flow guiding structure. During the replenishment and output of silicone oil, turbulence and eddies are easily generated. This unstable flow state not only causes irregular shaking of the liquid level detection components (such as traditional floats), but also further reduces the detection accuracy. Summary of the Invention

[0003] Therefore, it is necessary to provide a stable supply system for vacuum coating silicone oil based on a float level gauge to address the above-mentioned technical problems. Through the integrated design of level detection, automatic cleaning, and buffer limit, the system solves the drawbacks of the dispersed functions of traditional systems, and the efficiency of each component working together is higher.

[0004] This invention provides a stable supply system for vacuum-coated silicone oil in a float level gauge, comprising: The oil tank has a first cavity inside for storing silicone oil and second cavities at both ends. One side of the second cavity communicates with the first cavity, and the other side extends through the outer surface of the oil tank. The float body is installed in the second cavity and can move up and down in the second cavity. The float body will rotate when affected by the flow of silicone oil. A scraping ring is sleeved on the outer surface of the float body. When the float body moves up and down and rotates due to the change and flow of silicone oil in the oil tank, the scraping ring will scrape the surface of the second cavity. A sensor detection component is installed at the end of the fuel tank. One side of the sensor is snapped into the second cavity to limit the position of the float body, and the other side is used to detect the position of the float body. A lifting frame is installed longitudinally inside the first cavity. A limiting member is provided at the corner of the lifting frame. The limiting member can move up and down on the lifting frame to prevent the lifting frame from directly contacting the top and bottom surfaces of the first cavity.

[0005] In one embodiment, the fuel tank includes a tank body, a first positioning plate, and a second positioning plate. The first positioning plate has its first and second ends connected to each other to form a plate with an elongated hole in its axial section. The first positioning plate is located in the first cavity, and one end of the first positioning plate passes through the end of the tank body. The second positioning plate is also configured as a plate with its first and second ends connected. One end of the second positioning plate is connected to the other end of the first positioning plate, and the other end of the second positioning plate is bent and faces the same area.

[0006] In one embodiment, the connection between the first positioning plate and the second positioning plate forms the second cavity. The opening area of ​​the end of the second positioning plate away from the first positioning plate is smaller than the opening area of ​​the other end. An oil drain port is provided at the lowest end of the second positioning plate. One side of the oil drain port extends through the end of the second positioning plate away from the first positioning plate. An oil inlet hole and an oil outlet hole are also provided on the surface of the housing.

[0007] In one embodiment, the sensor detection component includes a fixing plate, a control plate, and Hall elements; the fixing plate is fitted to the end face of the housing, one side of the fixing plate protrudes and is engaged with the inner ring of the first positioning plate, and a sealing ring is provided between the fixing plate and the inner ring of the first positioning plate; a limiting groove is formed at this end of the fixing plate, the surface of the limiting groove is symmetrical with the inner surface of the second positioning plate; the control plate is installed on the other side of the fixing plate; and a plurality of Hall elements are arranged at intervals along the vertical direction on the fixing plate.

[0008] In one embodiment, the float body includes an upper float and a lower float; the upper float and the lower float are detachably connected and have permanent magnets inside; the lower half of the upper float and the upper half of the lower float are columnar and an annular groove is provided at their connection; the outer circumference of the upper float and the lower float are provided with spiral grooves, and the spiral radii of the spiral grooves of the two are the same.

[0009] In one embodiment, the scraper ring includes a first annular block, a second annular block, and a fastener; the first annular block is fitted inside the annular groove, the second annular block is fitted around the outer ring of the first annular block, the outer ring of the second annular block is movably fitted with the first positioning plate, the second positioning plate, and the limiting groove, the longitudinal thickness of the second annular block is less than the longitudinal thickness of the first annular block, and the upper and lower end faces of the second annular block are set as curved surfaces and are respectively connected to the upper and lower end faces of the first annular block, the outer ring of the second annular block has a third spiral groove, the outer ring of the second annular block has a second mounting groove and a first mounting groove sequentially formed along the radial direction, the rod of the fastener is installed in the first mounting groove and the end abuts against the minimum radius of the annular groove, and the cap of the fastener is located in the second mounting groove.

[0010] In one embodiment, the floating ball includes a first hemispherical shell, a first annular plate, and an outer sleeve; the flat end of the first hemispherical shell faces downward and is connected to the outer ring of the first annular plate, the outer ring of the first annular plate has a first spiral groove, the inner ring of the first annular plate is bent downward and is connected to the outer sleeve, and the spherical end of the first hemispherical shell is recessed downward to form a first arc-shaped groove.

[0011] In one embodiment, the lower float includes a second hemispherical shell, a second annular plate, and an inner sleeve; the flat end of the second hemispherical shell faces upward and is connected to the outer ring of the second annular plate, the outer ring of the second annular plate has a second spiral groove, the inner ring of the second annular plate is bent upward and is connected to the inner sleeve, the inner sleeve is installed inside the outer sleeve, and the spherical end of the second hemispherical shell is concave upward to form a second arc-shaped groove.

[0012] In one embodiment, the lifting frame includes a fixed frame, a semi-ring plate, and a support plate; the outer surface of the fixed frame is movably fitted to the side of the first cavity, two semi-ring plates are symmetrically arranged at both ends of the fixed frame near the oil outlet, the two ends of the semi-ring plates cut off the fixed frame and are connected to the fixed frame, the inner ring of the semi-ring plate can be movably fitted to the outer surface of the second positioning plate, the surface of the semi-ring plate is provided with a through opening, and the support plate is arranged on the upper half of the corner of the fixed frame.

[0013] In one embodiment, the limiting member includes a movable rod and a positioning ball; the movable rod extends longitudinally through the support plate, and the two ends of the movable rod are respectively connected to two positioning balls. The positioning balls are hollow and elastic. When the movable rod moves to the bottom, the lower positioning ball contacts the bottom surface of the first cavity before the fixed frame. When the movable rod moves to the top, the upper positioning ball contacts the top surface of the first cavity before the positioning frame.

[0014] The aforementioned stable supply system for silicone oil in vacuum coating based on a float level gauge has a first cavity in the oil tank for storing the silicone oil required for vacuum coating. The second cavities at both ends are connected to the first cavity, providing dedicated movement space for the float body and enabling smooth flow of silicone oil between the two cavities. When the amount of silicone oil in the tank changes, the float body moves up and down synchronously with the liquid level. Simultaneously, the silicone oil flows and washes over the float body, driving it to rotate around its own axis. As the float body moves, the scraping ring on its outer surface moves up and down and rotates synchronously, cleaning the inner wall of the second cavity in real time. One side of the sensor detection element is engaged in the second cavity, structurally constraining the movement range of the float body to prevent excessive shaking. The other side detects the position of the float body, providing accurate liquid level signals. The lifting frame moves longitudinally within the first cavity with the liquid level. The limiting component at the corner moves up and down, contacting the top or bottom surface of the oil tank before the lifting frame reaches its limit position, thus providing a buffer. By integrating liquid level detection, automatic scraping, and buffer limiting design, the drawbacks of traditional systems with dispersed functions are solved. The collaborative work of each component is more efficient. The coordinated up-and-down movement and rotation of the float, along with the real-time scraping of the scraping ring, effectively prevents silicone oil residue from accumulating on the inner wall of the second cavity, fundamentally solving the problems of narrowed flow channels and increased flow resistance. This ensures smooth float movement and eliminates jamming. The limiting component uses elastic buffering to prevent hard collisions between the lifting frame and the oil tank, reducing component wear and extending the overall service life of the system. The sensor detection component has both limiting and detection functions, reducing irregular swaying of the float and improving the accuracy and stability of liquid level detection. This provides reliable data support for a stable supply of silicone oil, thereby ensuring the uniformity, adhesion, and product yield of the vacuum coating layer. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A three-dimensional structural schematic diagram of the vacuum coating silicone oil stable supply system provided by the present invention; Figure 2 A schematic diagram of the planar structure of the vacuum coating silicone oil stable supply system provided by the present invention; Figure 3 A three-dimensional structural diagram of the fuel tank provided by the present invention; Figure 4 A three-dimensional structural diagram of the lifting frame provided by the present invention; Figure 5 This is a schematic diagram of the structure of the sensor detection element provided by the present invention; Figure 6 A three-dimensional structural schematic diagram of the float body provided by the present invention; Figure 7 A schematic cross-sectional view of the float body provided by the present invention; Figure 8 This is a cross-sectional structural diagram of the scraper ring provided by the present invention.

[0017] Figure label: 100. Oil tank; 110. Tank body; 111. Oil inlet; 112. Oil outlet; 120. First positioning plate; 130. Second positioning plate; 131. Oil drain port; 140. First cavity; 150. Second cavity; 200. Sensor detection element; 210. Fixing plate; 211. Limiting groove; 220. Sealing ring; 230. Control board; 240. Hall element; 300. Float body; 310. Upper float; 311. First hemispherical shell; 3111. First spiral groove; 312. First annular plate; 313. First arc-shaped groove; 314. Outer sleeve; 320. Lower float; 321. Second hemispherical shell; 3211. Second spiral groove; 322. Second annular plate; 323. Second arc-shaped groove; 324. Inner sleeve; 330. Annular groove; 400. Scraper ring; 410. First annular block; 420. Second annular block; 421. Third spiral groove; 422. First mounting groove; 423. Second mounting groove; 430. Fastener; 500. Lifting frame; 510. Fixing frame; 520. Semi-annular plate; 521. Through opening; 530. Support plate; 600. Limiting component; 610. Movable rod; 620. Positioning ball. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The following is combined Figures 1 to 8 This invention describes a stable supply system for vacuum-coated silicone oil based on a float level gauge.

[0020] like Figure 1 and Figure 2As shown, in one embodiment, a vacuum-coated silicone oil stable supply system for a float level gauge includes an oil tank 100, a float body 300, a scraper ring 400, a sensor detection element 200, and a lifting frame 500. The oil tank 100 has a first cavity 140 for storing silicone oil inside, and second cavities 150 at both ends. One side of the second cavity 150 communicates with the first cavity 140, and the other side extends through the outer surface of the oil tank 100. The float body 300 is installed in the second cavity 150 and can move up and down within it. The float body 300 rotates when affected by the flow of silicone oil. The scraper ring 400 is sleeved on the outer surface of the float body 300. When the float... When the float body 300 moves up and down and rotates due to the change and flow of silicone oil in the oil tank 100, the scraper ring 400 will scrape the surface of the second cavity 150. The sensor detection element 200 is installed at the end of the oil tank 100. One side of the sensor is snapped into the second cavity 150 to limit the position of the float body 300, and the other side is used to detect the position of the float body 300. The lifting frame 500 is installed longitudinally in the first cavity 140. A limiting element 600 is provided at the corner of the lifting frame 500. The limiting element 600 can move up and down on the lifting frame 500 to prevent the lifting frame 500 from directly contacting the top and bottom surfaces of the first cavity 140.

[0021] The aforementioned stable supply system for silicone oil in vacuum coating based on a float level gauge includes a first cavity 140 in the oil tank 100 for storing the silicone oil required for vacuum coating. Second cavities 150 at both ends are connected to the first cavity 140, providing dedicated movement space for the float body 300 and enabling smooth flow of silicone oil between the two cavities. When the amount of silicone oil in the oil tank 100 changes, the float body 300 moves up and down synchronously with the liquid level. Simultaneously, the silicone oil flows and washes over the float body 300, driving it to rotate around its own axis. As the float body 300 moves, the scraper ring 4 on its outer surface... The 00 moves up and down synchronously and rotates with the flow, cleaning the inner wall of the second cavity 150 in real time. The sensor detection component 200 is snapped into the second cavity 150 on one side, which restricts the movement range of the float body 300 through the structure to avoid excessive shaking; on the other side, it detects the position of the float body 300 and feeds back a precise liquid level signal. The lifting frame 500 moves longitudinally with the liquid level in the first cavity 140. The limiting component 600 at the corner moves up and down on its own, so that when the lifting frame 500 reaches the limit position, it contacts the top or bottom surface of the oil tank 100 before the lifting frame 500 does, thus achieving buffering. By integrating liquid level detection, automatic scraping, and buffer limiting design, the drawbacks of traditional systems with dispersed functions are solved. The efficiency of each component working together is higher. The up-and-down movement and rotation of the float are coordinated with the real-time scraping of the scraper ring 400 to effectively prevent silicone oil residue from accumulating on the inner wall of the second cavity 150. This fundamentally solves the problems of narrowed flow channels and increased flow resistance, ensuring smooth movement of the float and eliminating jamming. The limiting component 600 uses elastic buffering to prevent hard collisions between the lifting frame 500 and the oil tank 100, reducing component wear and extending the overall service life of the system. The sensor detection component 200 has both limiting and detection functions, reducing irregular swaying of the float and improving the accuracy and stability of liquid level detection. This provides reliable data support for a stable supply of silicone oil, thereby ensuring the uniformity, adhesion, and product yield of the vacuum coating layer.

[0022] like Figure 3 As shown, in one embodiment, the oil tank 100 includes a tank body 110, a first positioning plate 120, and a second positioning plate 130. The first and second ends of the first positioning plate 120 are connected to each other to form a plate with an elongated hole in its axial section. The first positioning plate 120 is located in the first cavity 140, and one end of the first positioning plate 120 passes through the end of the tank body 110. The second positioning plate 130 is also configured as a plate with its first and second ends connected. One end of the second positioning plate 130 is connected to the other end of the first positioning plate 120, and the other end of the second positioning plate 130 is bent and faces the same area.

[0023] Specifically, the lack of a targeted flow guiding structure in the single cavity design of the 100 oil tank, the unreasonable molding of the traditional detection channel, insufficient smoothness of the inner wall, and unscientific path design lead to high resistance to silicone oil flow and obstruction of the float movement.

[0024] This system optimizes the internal flow guiding structure of the oil tank 100. The inner wall of the second cavity 150 enclosed by the first and second positioning plates 130 is smooth and the path is scientifically designed, which significantly reduces the flow resistance of silicone oil and provides a stable environment for the vertical movement and rotation of the float body 300. The plate-type structure design enhances the connection strength between the second cavity 150 and the oil tank 100 body, avoiding channel deformation caused by silicone oil erosion or pressure changes during long-term use. It provides a precise installation and positioning reference for components such as the sensor detection component 200 and the float body 300, improves the overall assembly accuracy of the system, and ensures the reliability of the collaborative work of various components.

[0025] In one embodiment, the connection between the first positioning plate 120 and the second positioning plate 130 forms the second cavity 150. The opening area of ​​the end of the second positioning plate 130 away from the first positioning plate 120 is smaller than the opening area of ​​the other end. An oil drain port 131 is provided at the lowest end of the second positioning plate 130. One side of the oil drain port 131 extends through the end of the second positioning plate 130 away from the first positioning plate 120. An oil inlet hole 111 and an oil outlet hole 112 are also provided on the surface of the housing 110.

[0026] Specifically, this addresses the problem of silicone oil continuously accumulating on the inner wall of the detection channel, making it difficult to drain, and the issue of unstable silicone oil flow exacerbated by an unreasonable layout of the oil inlet and outlet.

[0027] The gradient opening design of this system optimizes the flow state of silicone oil, reduces eddies and turbulence, and reduces the irregular shaking of the float body 300 caused by fluid impact, thereby improving the stability of liquid level detection. The oil drain port 131 enables the timely discharge of residual silicone oil and impurities, avoids the narrowing of the flow channel caused by accumulation and solidification, ensures stable silicone oil flow resistance, and further reduces the risk of float jamming. The reasonable layout of the oil inlet hole 111 and the oil outlet hole 112, together with the flow guiding structure, realizes the smooth circulation of silicone oil supply, providing a continuous and stable silicone oil medium for the vacuum coating process.

[0028] like Figure 5 As shown, in one embodiment, the sensor detection element 200 includes a fixing plate 210, a control plate 230, and Hall elements 240. The fixing plate 210 is fitted to the end face of the housing 110. One side of the fixing plate 210 protrudes and is engaged with the inner ring of the first positioning plate 120, and a sealing ring 220 is provided between the fixing plate 210 and the inner ring of the first positioning plate 120. A limiting groove 211 is formed at this end of the fixing plate 210. The surface of the limiting groove 211 is symmetrical with the inner surface of the second positioning plate 130. The control plate 230 is installed on the other side of the fixing plate 210. A plurality of Hall elements 240 are arranged at intervals along the vertical direction on the fixing plate 210.

[0029] Specifically, traditional sensors only have detection functions and no positional function. The float's movement affects the detection accuracy, and the poor sealing between the sensor and the detection channel can easily lead to leakage or impurities entering, interfering with the detection.

[0030] This system combines limiting and detection functions. The limiting groove 211 constrains the movement trajectory of the float, while the Hall element 240 accurately detects the position. This dual function improves the accuracy of liquid level detection and solves the signal distortion problem caused by float swaying in traditional sensors. The sealing ring 220 ensures the sealing of the detection channel, avoids leakage and interference from impurities, and extends the service life of the sensor detection element 200. Multiple Hall elements 240 are arranged at intervals along the vertical direction to achieve segmented and accurate detection of the liquid level, shorten the signal feedback lag time, and provide support for real-time control of silicone oil replenishment and output.

[0031] like Figure 6 As shown, in one embodiment, the float body 300 includes an upper float 310 and a lower float 320; the upper float 310 and the lower float 320 are detachably connected and have permanent magnets inside; the lower half of the upper float 310 and the upper half of the lower float 320 are columnar, and an annular groove 330 is provided at the connection between the two; the outer circumferential surfaces of the upper float 310 and the lower float 320 are provided with spiral grooves, and the spiral radii of the spiral grooves of the two are the same.

[0032] Specifically, the traditional mechanical float design suffers from problems such as inconvenient maintenance, lack of targeted structural design, weak self-rotation ability due to the high viscosity of silicone oil, and easy sticking and jamming.

[0033] The detachable design of this system reduces maintenance difficulty, facilitates the replacement of permanent magnets or the cleaning of residual silicone oil on the surface of the float, and improves system maintenance efficiency. The spiral groove structure enhances the float's rotation capability, using the kinetic energy of the silicone oil flow to drive the rotation. Combined with the scraper ring 400, it achieves efficient scraping, reducing the adhesion and jamming between the float and the inner wall of the channel. The precise cooperation between the permanent magnet and the Hall element 240 ensures stable transmission of the liquid level signal. At the same time, the lower half of the columnar structure of the upper float 310 and the upper half of the lower float 320 further optimize the force balance of the float and improve its smoothness in vertical movement.

[0034] like Figure 8As shown, in one embodiment, the scraper ring 400 includes a first annular block 410, a second annular block 420, and a fastener 430; the first annular block 410 is sleeved in the annular groove 330, and the second annular block 420 is sleeved on the outer ring of the first annular block 410. The outer ring of the second annular block 420 is movably fitted with the first positioning plate 120, the second positioning plate 130, and the limiting groove 211. The longitudinal thickness of the second annular block 420 is less than the longitudinal thickness of the first annular block 410. Furthermore, the upper and lower end faces of the second annular block 420 are set as curved surfaces and are respectively connected to the upper and lower end faces of the first annular block 410. The outer ring of the second annular block 420 is provided with a third spiral groove 421. The outer ring of the second annular block 420 is provided with a second mounting groove 423 and a first mounting groove 422 in sequence along the radial direction. The rod part of the fastener 430 is installed in the first mounting groove 422 and the end abuts against the minimum radius of the annular groove 330. The cap part of the fastener 430 is located in the second mounting groove 423.

[0035] Specifically, the traditional system lacks a dedicated cleaning structure and the cleaning components do not fit well with the float and the inner wall of the channel, resulting in poor cleaning effect or obstruction of float movement due to the continuous accumulation of silicone oil on the inner wall of the detection channel.

[0036] In this system, the scraping ring moves in close contact with the inner wall of the channel, moving up and down and rotating synchronously with the float, achieving real-time, all-round scraping of the inner wall of the second cavity 150, thoroughly solving the problem of silicone oil accumulation and ensuring smooth flow. The upper and lower end faces of the second annular block 420 are curved, and the longitudinal thickness is less than that of the first annular block 410, reducing the resistance of the scraping ring to the flow of silicone oil and avoiding obstruction of the float's movement. The third spiral groove 421 further optimizes fluid flow and improves scraping efficiency. The concealed installation design of the fastener 430 not only ensures the firm connection between the scraping ring 400 and the float body 300, but also avoids silicone oil flow disturbance or scraping dead corners caused by the protrusion of the fastener 430, thus improving the scraping effect and system stability.

[0037] like Figure 7 As shown, in one embodiment, the floating ball 310 includes a first hemispherical shell 311, a first annular plate 312, and an outer sleeve 314; the flat end of the first hemispherical shell 311 faces downward and is connected to the outer ring of the first annular plate 312, the outer ring of the first annular plate 312 is provided with a first spiral groove 3111, the inner ring of the first annular plate 312 is bent downward and is connected to the outer sleeve 314, and the spherical end of the first hemispherical shell 311 is recessed downward to form a first arc-shaped groove 313.

[0038] Specifically, this addresses the problem in the background technology that the unreasonable structural design of the upper float 310 leads to insufficient self-rotation torque, poor hydrodynamic properties of the float surface, and significant susceptibility to turbulence, resulting in unstable up-and-down movement.

[0039] In this system, the first spiral groove 3111 enhances the self-rotation driving force of the upper float 310, improves the overall self-rotation efficiency of the float, and works with the scraper ring 400 to achieve more efficient scraping and reduce adhesion and jamming. The cooperation between the outer sleeve 314 and the inner sleeve 324 of the lower float 320 ensures the connection of the float body 300 and avoids the float disintegration caused by silicone oil flushing. The first arc-shaped groove 313 optimizes the hydrodynamic characteristics, reduces the impact of turbulence on the upper float 310, reduces the irregular shaking of the float, and improves the stability of liquid level detection.

[0040] In one embodiment, the lower float 320 includes a second hemispherical shell 321, a second annular plate 322, and an inner sleeve 324; the planar end of the second hemispherical shell 321 faces upward and is connected to the outer ring of the second annular plate 322, the outer ring of the second annular plate 322 is provided with a second spiral groove 3211, the inner ring of the second annular plate 322 is bent upward and is connected to the inner sleeve 324, the inner sleeve 324 is installed inside the outer sleeve 314, and the spherical end of the second hemispherical shell 321 is concave upward to form a second arc-shaped groove 323.

[0041] Specifically, the background technology addresses the problem that the unreasonable structural design of the lower float 320 and its poor coordination with the upper float 310 lead to an overall imbalance in the self-rotation of the float and high fluid resistance on the surface of the lower float 320, which exacerbates the turbulence in the flow of silicone oil.

[0042] In this system, the second spiral groove 3211 and the first spiral groove 3111 work together to ensure the self-rotation balance of the float body 300, improve the self-rotation efficiency, enhance the cleaning effect, and avoid float jamming caused by self-rotation imbalance. The inner sleeve 324 and the outer sleeve 314 cooperate to achieve a firm sealing connection of the float body 300, preventing silicone oil from entering the float and affecting the performance of the permanent magnet. The second arc-shaped groove 323 cooperates with the first arc-shaped groove 313 to optimize the overall hydrodynamic characteristics of the float, reduce flow resistance, reduce the interference of turbulence on the movement of the float, and improve the stability and accuracy of liquid level detection.

[0043] like Figure 4As shown, in one embodiment, the lifting frame 500 includes a fixed frame 510, a semi-ring plate 520, and a support plate 530; the outer surface of the fixed frame 510 is movably fitted to the side of the first cavity 140, the two semi-ring plates 520 are symmetrically arranged at both ends of the fixed frame 510 near the oil outlet 112, the two ends of the semi-ring plate 520 cut off the fixed frame 510 and are connected to the fixed frame 510, the inner ring of the semi-ring plate 520 can be movably fitted to the outer surface of the second positioning plate 130, the surface of the semi-ring plate 520 is provided with a through hole 521, and the support plate 530 is arranged on the upper half of the corner of the fixed frame 510.

[0044] Specifically, in the background technology, the first cavity 140 of the oil tank 100 lacks a flow guiding structure, resulting in turbulent or eddy currents caused by the disordered flow of silicone oil, which affects the movement of the float and the detection accuracy. In the traditional system, the second positioning plate 130 is prone to deformation due to the erosion of silicone oil due to the lack of a supporting structure.

[0045] In this system, the semi-ring plate 520 provides effective support for the second positioning plate 130, preventing it from deforming due to long-term silicone oil erosion, ensuring the structural stability of the second cavity 150, and extending the service life of the oil tank 100. The through port 521 optimizes the silicone oil flow path, suppresses turbulence and eddies in the first cavity 140, reduces the impact of fluid impact on the float body 300, and improves the accuracy of liquid level detection. The movable fit design between the fixed frame 510 and the side of the first cavity 140, and between the semi-ring plate 520 and the outer surface of the second positioning plate 130, reduces the frictional resistance when the lifting frame 500 moves, ensuring its smooth movement with the liquid level and further stabilizing the silicone oil flow state.

[0046] In one embodiment, the limiting member 600 includes a movable rod 610 and a positioning ball 620; the movable rod 610 extends longitudinally through the support plate 530, and the two ends of the movable rod 610 are respectively connected to the two positioning balls 620. The positioning balls 620 are hollow and elastic. When the movable rod 610 moves to the bottom, the lower positioning ball 620 contacts the bottom surface of the first cavity 140 before the fixed frame 510. When the movable rod 610 moves to the top, the upper positioning ball 620 contacts the top surface of the first cavity 140 before the positioning frame.

[0047] Specifically, this addresses the issue of the lifting frame 500 colliding hard with the top or bottom surface of the oil tank 100 during movement, which exacerbates component wear and causes the lifting frame 500 to shake, indirectly affecting the movement of the float and the accuracy of liquid level detection.

[0048] In this system, the elastic positioning ball 620 absorbs the impact force through deformation, avoiding hard collisions between the lifting frame 500 and the top or bottom surface of the oil tank 100, significantly reducing component wear, extending the service life of the lifting frame 500 and the oil tank 100, and reducing the shaking of the lifting frame 500 by buffering, avoiding fluid disturbance caused by collisions, ensuring the smooth movement of the float body 300, and indirectly improving the accuracy of liquid level detection. The structure is simple, the buffering effect is reliable, no additional power is required, it is suitable for the working conditions of the vacuum coating silicone oil supply system, and improves the overall operational stability of the system.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A vacuum-coated silicone oil stable supply system for a float level gauge, characterized by, The oil tank comprises: An oil tank, which is internally provided with a first cavity for storing silicone oil, and is provided with a second cavity at both ends, one side of the second cavity being communicated with the first cavity and the other side penetrating the outer surface of the oil tank; A floating ball body, which is installed in the second cavity and can move up and down in the second cavity, and can rotate when affected by the flow of silicone oil; A scraping ring, which is sleeved on the outer surface of the floating ball body, and can scrape the surface of the second cavity when the floating ball body moves up and down and rotates due to the change and flow of the amount of silicone oil in the oil tank; A sensor detection piece, which is installed at the end of the oil tank, one side of the sensor being clamped in the second cavity for limiting the floating ball body, and the other side being used for detecting the position of the floating ball body; A lifting frame, which is installed longitudinally in the first cavity, and is provided with a limiting piece at the corner of the lifting frame, which can move up and down on the lifting frame to avoid direct contact of the lifting frame with the top and bottom surfaces of the first cavity.

2. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 1, wherein The oil tank comprises a tank body, a first positioning plate and a second positioning plate; the first positioning plate is connected at both ends to form a plate piece with a long hole-shaped axial section, the first positioning plate is located in the first cavity, one end of the first positioning plate penetrates the end of the tank body, the second positioning plate is also provided as a plate piece connected at both ends, one end of the second positioning plate is connected to the other end of the first positioning plate, and the other end of the second positioning plate is bent and arranged towards the same area.

3. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 2, wherein The connection between the first positioning plate and the second positioning plate forms the second cavity, the opening area of one end of the second positioning plate away from the first positioning plate is smaller than that of the other end, the lowest end of the second positioning plate is provided with a drain hole, one side of the drain hole penetrates one end of the second positioning plate away from the first positioning plate, and the tank body is also provided with an oil inlet hole and an oil outlet hole.

4. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 3, wherein The sensor detection piece comprises a fixed plate, a control plate and a Hall element; the fixed plate is arranged in close contact with the end face of the tank body, one side of the fixed plate protrudes and is clamped in the inner circle of the first positioning plate, and a sealing ring is arranged between the fixed plate and the inner circle of the first positioning plate, a limiting groove is formed in the end of the fixed plate, the surface of the limiting groove is symmetrical with the inner surface of the second positioning plate, the control plate is installed on the other side of the fixed plate, and a plurality of Hall elements are arranged in the vertical direction on the fixed plate.

5. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 4, wherein The floating ball body comprises an upper floating ball and a lower floating ball; the upper floating ball and the lower floating ball are detachably connected and are internally provided with a permanent magnet, the lower half of the upper floating ball and the upper half of the lower floating ball are provided in a columnar shape, and an annular groove is arranged at the connection between the two, and helical grooves are formed in the outer circumferential surfaces of the upper floating ball and the lower floating ball, and the helical grooves of the two have the same helical radius.

6. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 5, wherein The scraper ring comprises a first annular block, a second annular block and a fastener; the first annular block is sleeved in the annular groove, the second annular block is sleeved on the outer circle of the first annular block, the outer circle of the second annular block is movably attached to the first positioning plate, the second positioning plate and the limiting groove, the longitudinal thickness of the second annular block is smaller than that of the first annular block, the upper and lower end faces of the second annular block are curved and connected to the upper and lower end faces of the first annular block respectively, the outer circle of the second annular block is provided with a third spiral groove, the outer circle of the second annular block is sequentially provided with a second installation groove and a first installation groove in the radial direction, the rod part of the fastener is installed in the first installation groove and the end part is abutted at the smallest radius of the annular groove, and the cap part of the fastener is located in the second installation groove.

7. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 6, wherein The upper floating ball comprises a first half-spherical shell, a first annular plate and an outer sleeve; the planar end of the first half-spherical shell faces downward and is connected to the outer circle of the first annular plate, the outer circle of the first annular plate is provided with a first spiral groove, the inner circle of the first annular plate is curved downward and is connected to the outer sleeve, and the spherical end of the first half-spherical shell is concave downward to form a first arc-shaped groove.

8. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 7, wherein The lower floating ball comprises a second half-spherical shell, a second annular plate and an inner sleeve; the planar end of the second half-spherical shell faces upward and is connected to the outer circle of the second annular plate, the outer circle of the second annular plate is provided with a second spiral groove, the inner circle of the second annular plate is curved upward and is connected to the inner sleeve, the inner sleeve is installed in the outer sleeve, and the spherical end of the second half-spherical shell is concave upward to form a second arc-shaped groove.

9. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 8, wherein The lifting frame comprises a fixed frame, a half-ring plate and a support plate; the outer surface of the fixed frame is movably attached to the side surface of the first cavity, two half-ring plates are symmetrically arranged at the two ends of the fixed frame near the oil outlet hole, the two ends of the half-ring plate cut off the fixed frame and are connected to the fixed frame, the inner circle of the half-ring plate can be movably attached to the outer surface of the second positioning plate, the surface of the half-ring plate is provided with a through hole, and the support plate is arranged on the upper half side of the corner of the fixed frame.

10. The vacuum-coated silicone oil stable supply system for a float level gauge according to claim 9, wherein The limiting piece comprises a movable rod and a positioning ball; the movable rod penetrates the support plate in the longitudinal direction, the two ends of the movable rod are respectively connected to two positioning balls, the positioning ball is hollow and elastic, when the movable rod moves to the lowest position, the lower positioning ball contacts the bottom surface of the first cavity before the fixed frame, and when the movable rod moves to the highest position, the upper positioning ball contacts the top surface of the first cavity before the positioning frame.

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