A float level gauge for measuring liquid level in a tank

Abstract

This invention relates to the field of liquid level measurement technology, specifically disclosing a tank liquid level measuring float level gauge. It includes a measuring cylinder with a float rod and a float, and further includes outer rods circumferentially distributed around the float at predetermined intervals. A float element located at the bottom of the float is fixedly installed at the end of each outer rod, and the multiple outer rods move coaxially relative to the float. The tank liquid level measuring float level gauge provided by this invention, through the multiple outer rods forming a ring around the float, ensures that if the connection breaks, the float can be retained in the storage chamber, avoiding the need to search for the float inside the tank during maintenance. When the liquid level rises, all the float elements not only contact the lower end of the float but also lift the float and remove it from the liquid surface, preventing stress transmission between the float and the liquid surface. This protects the connection and float rod, greatly reducing the problem of damage to the float rod and connection due to stress.

Description

Technical Field

[0001] This invention relates to liquid level measurement technology, specifically a float level gauge for measuring liquid level in a tank. Background Technology

[0002] Mechanical float level gauges typically consist of a float, a float rod, a permanent magnet, and a magnetic flap. When in use, the float is placed on the liquid surface inside the tank, allowing it to move up and down with the liquid level. The movement of the permanent magnet drives the magnetic flap to rotate 180° to display the position detection information.

[0003] For example, the publication (announcement) number: CN111204534A, publication (announcement) date: 2020-05-29, discloses a float level gauge for measuring asphalt liquid level, including a cylinder, a rod, a float, a float, a magnet and a magnetic flip indicator; the rod is vertically installed in the middle of the cylinder, the upper part of the float is sleeved on the rod, and the lower end of the float is connected to the float in the asphalt storage tank, and the float floats on the surface of the asphalt liquid.

[0004] The drawback of existing technology is that, in order to meet the need for replacement, the float of a mechanical float level gauge is connected to the float rod in a detachable manner. When the liquid stored in the tank contains corrosive or volatile liquids, the connection point of the float is easily corroded and damaged. If the connection point breaks due to corrosion, the float level gauge will fail. Furthermore, if this occurs outside of the inspection and maintenance cycle, the liquid in the tank cannot be measured, causing on-site personnel to misjudge the liquid level. When liquid is added to the tank, the liquid level will inevitably fluctuate due to the liquid flow. At this time, the float remains in contact with the liquid surface, so the stress generated by the fluctuation is easily applied to the connection parts, as well as the flange connection between the float rod and the float level gauge. This causes the float rod to deform and be damaged, thus hindering its normal up and down movement. The reason for this is that the float needs to bear the weight of the float rod and the components on the float rod when it is working. In order to reduce the workload on the float, traditional mechanical float level gauges use a thinner solid rod or a thicker hollow rod for the float rod. However, both types of rods need to bear the stress absorbed by the float in actual use, which aggravates the damage to the connection parts of the float. This makes the float level gauge inconvenient to use, and a broken float will remain in the tank, making it difficult to find later. Summary of the Invention

[0005] The purpose of this invention is to provide a float level gauge for measuring liquid level in tanks, so as to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A tank liquid level measuring float level gauge includes a measuring cylinder equipped with a float rod and a float ball, and an outer rod circumferentially distributed outside the float ball and maintaining a predetermined distance therefrom; The outer rods are fixedly mounted with floats located at the bottom of the float, and multiple outer rods move coaxially with respect to the float, giving the floats the following two positions: By default, the float and the float ball maintain a predetermined distance. The float moves upward and remains in contact with the buoy.

[0007] As a further description of the above technical solution: an inner rod is fixedly installed on the outer rod, and multiple inner rods slide vertically on a partition plate fixedly installed inside the measuring cylinder.

[0008] As a further description of the above technical solution: an inner elastic strip is fixedly installed at the end of the inner rod, and an outer elastic strip is slidably coupled to the outside of the inner elastic strip.

[0009] As a further description of the above technical solution: when the moving position is lowered, the inner elastic strip is bent by force and its end abuts against the side wall of the float.

[0010] As a further description of the above technical solution: under sliding coupling, the outer elastic strip is squeezed and stores force by the inner elastic strip.

[0011] As a further description of the above technical solution: it also includes a top frame for installing the external elastic strip, on which a platform shell that slides in contact with the outer wall of the float is fixedly installed.

[0012] As a further description of the above technical solution: at the end of the travel of the moving position, the end of the inner elastic strip makes sliding contact with the platform shell, so that the inner elastic strip is embedded on the outer elastic strip and the sliding coupling is released.

[0013] As a further description of the above technical solution: the inner elastic strip is provided with a protrusion, and the outer elastic strip is provided with an inlet for the protrusion to be inserted.

[0014] As a further description of the above technical solution: the float is provided with a sleeve for engaging the protrusion, and the float and the protrusion move synchronously in the engaged state.

[0015] As a further description of the above technical solution: the float is provided with a slide rail that slides in contact with the protrusion.

[0016] In the above technical solution, the float level gauge for tank liquid level measurement provided by the present invention has the following beneficial effects: Multiple outer rods form a ring around the float, ensuring that if the connection breaks, the float can be retained in the storage chamber, avoiding the need to search for the float inside the tank during maintenance. When the liquid level rises, all float components not only contact the lower end of the float but also lift the float and detach it from the liquid surface, preventing stress transmission between the float and the liquid surface. This protects the connection and float rods, greatly reducing the risk of damage to the float rod and connection due to stress, ensuring the normal up-and-down movement of the float rod, and making the level gauge safer and more convenient to operate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of a float level gauge provided in an embodiment of the present invention; Figure 2 This is a front cross-sectional view of the float level gauge provided in an embodiment of the present invention; Figure 3 A schematic diagram of the assembly of a float with a float ball and a single inner rod, outer rod, inner elastic strip, and outer elastic strip provided for an embodiment of the present invention; Figure 4 A schematic diagram showing the position of a float rod equipped with a float ball and its outer side, as well as a single inner rod, outer rod, inner elastic strip, and outer elastic strip, after assembly at the liquid surface, according to an embodiment of the present invention. Figure 5 This is a schematic diagram of some of the floats provided in an embodiment of the present invention; Figure 6 A schematic diagram of the assembly of a float and its outermost single inner rod, outer rod, inner elastic strip, and outer elastic strip, provided for an embodiment of the present invention; Figure 7 for Figure 6 Enlarged view of point A; Figure 8 This is a schematic diagram of the motion trajectory of the inner and outer elastic strips provided in an embodiment of the present invention; Figure 9 This is an exploded view of the inner and outer elastic strips provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the assembly of the inner elastic strip and the outer elastic strip provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Measuring cylinder; 11. Flip plate; 12. Side rod; 13. Partition; 2. Float rod; 21. Float ball; 22. Permanent magnet; 23. Slide rail; 24. Groove; 25. Sleeve; 3. Ring frame; 31. Inner rod; 32. Outer rod; 33. Storage chamber; 4. Float component; 5. Inner elastic strip; 51. Side opening; 52. Protrusion; 53. Side shoulder; 6. Top frame; 61. Platform shell; 611. Triangular block; 62. Frame rod; 7. Outer elastic strip; 71. Sliding hole; 72. Inlet; 73. Outlet. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-10 The present invention provides a technical solution: a tank liquid level measuring float level gauge, including a measuring cylinder 1 with a float rod 2 and a float 21, and an outer rod 32 circumferentially distributed outside the float 21 and maintaining a predetermined distance therefrom; The end of the outer rod 32 is fixedly mounted with a float 4 located at the bottom of the float 21, and multiple outer rods 32 move coaxially with respect to the float 21, giving the float 4 the following two positions: By default, float 4 and float 21 maintain a predetermined distance; The float 4 is moved upward and keeps in contact with the float 21.

[0022] Specifically, the measuring cylinder 1 has a flip-plate surface 11 on its surface, and the flip-plate surface 11 has magnetic flip plates evenly distributed on it. The flip-plate surface 11 is used to display position data in the prior art, and will not be described in detail here. The upper end of the float 2 is bolted to install a permanent magnet 22, while the lower end of the float 2 and the float ball 21 are detachably connected by bolts and nuts.

[0023] Furthermore, a storage chamber 33 for accommodating the float 21 is formed between multiple outer rods 32. The lower end of the outer rods 32 and the float 4 are detachably connected by bolts, and the sum of the buoyancy of all the floats 4 is greater than the buoyancy of the float 21, so that all the floats 4 can lift the float 21.

[0024] Furthermore, the radial distance between the outer rod 32 and the float 21 prevents the float 21 from sliding against the outer rod 32 during vertical movement, thus avoiding resistance to the vertical movement of the float 2. Simultaneously, the upper end of the float 4 has an arc-shaped surface that contacts the bottom of the float 21. Therefore, even if the float 4 is subjected to stress, the arc-shaped contact surface can utilize its sliding contact capability to reduce the direct transmission of stress to the float 21.

[0025] Multiple outer rods 32 form a ring around the float 21, ensuring that if the connection breaks, the float 21 can be retained in the storage chamber 33, avoiding the need to search for the float 21 inside the tank during maintenance. When the liquid level drops, the float 21 descends with the liquid surface. At this time, all the float components 4 are below the float 21 and maintain a predetermined distance from the lower end of the float 21, thus not interfering with the numerical display of the float 21 on the liquid surface. When the liquid level rises, all the float components 4 not only contact the lower end of the float 21 but also lift the float 21 and remove it from the liquid surface, preventing stress transmission between the float 21 and the liquid surface. This protects the connection and the float rod 2, greatly reducing the risk of damage to the float rod 2 and the connection due to stress, ensuring the normal up-and-down movement of the float rod 2, and making the operation of the level gauge safer and more convenient.

[0026] In another embodiment of the present invention, an inner rod 31 is fixedly installed on the outer rod 32, and multiple inner rods 31 slide vertically on the partition 13 fixedly installed inside the metering cylinder 1.

[0027] Specifically, the inner rod 31 and the outer rod 32 are integrally formed, and the hardness of the metal rods formed by the two is greater than the stress present in the liquid, thus avoiding bending problems caused by stress on the inner rod 31 and the outer rod 32. A ring frame 3 is detachably installed near the upper end of the inner rod 31 using bolts and nuts, the purpose of which is to distribute the multiple inner rods 31 in a circumferential manner inside the metering cylinder 1.

[0028] Furthermore, the partition plate 13 is integrally formed inside the metering cylinder 1, and a hole is provided in the middle of the partition plate 13 for the float 2 to slide vertically. A sealing ring for sealing is also fixedly installed in the hole, and the sealing ring has multiple layers of rubber lips that contact the side wall of the float 2. A flange is welded to the lower end of the metering cylinder 1, and an opening is provided on the tank body for the float ball 21 to pass through. A platform is welded to the outside of the opening, and the flange and the threaded hole on the platform are assembled. The tank body and the platform on it are existing technologies and will not be described in detail here.

[0029] By twisting the inner rod 31 at the upper end of the outer rod 32, the inner diameter of the ring formed by the multiple inner rods 31 is made smaller, which is to adapt to the internal space of the measuring cylinder 1. The partition 13 provides the limit and guide for the vertical movement of the inner rod 31, so that the outer rod 32 can stably perform the protective work.

[0030] In another embodiment of the present invention, an inner elastic strip 5 is fixedly installed at the end of the inner rod 31, and an outer elastic strip 7 is slidably coupled to the outside of the inner elastic strip 5.

[0031] Specifically, both the inner elastic strip 5 and the outer elastic strip 7 are corrosion-resistant elastic metal strips. The inner elastic strip 5 is fixed to the upper end of the inner rod 31 with bolts, which facilitates the replacement of damaged or failed inner elastic strips 5.

[0032] Furthermore, both the inner elastic strip 5 and the outer elastic strip 7 are bent by default, with the upper end of the inner elastic strip 5 bending towards the float 2 (but not in contact with the side wall of the float 2), and the lower end of the outer elastic strip 7 bending towards the inner wall of the metering cylinder 1.

[0033] When the inner rod 31 moves upward due to buoyancy, as Figure 8 As shown in Figure e, the outer elastic strip 7 is subjected to a compressive force (away from the axis of the float 2), so that the reaction force of the outer elastic strip 7 (towards the axis of the float 2) always acts on the inner elastic strip 5 and applies pressure. However, the inner elastic strip 5 has an upward driving force. Therefore, the inner elastic strip 5 slides upward on the raised arc surface of the outer elastic strip 7, so that the sliding friction consumes the power of the upward stroke of the inner elastic strip 5, so that all the floats 4 can move upward with the rise of the liquid level, and achieve stable lifting of the float 21.

[0034] In another embodiment of the present invention, the inner elastic strip 5 in the moving position is bent by force and its end abuts against the side wall of the float 2.

[0035] As the inner elastic strip 5 moves upward, it is pressed by the reaction force, causing it to bend again and extend its upper end to abut against the side wall of the float 2. This tightly clamps the float 2, achieving the purpose of pushing and lifting the float 21 and clamping and lifting the float 2, thus making the upward movement of the float 2 and float 2 more stable. The clamping of the float 2, combined with the sliding of the partition 13, limits the vertical position of the float 2 and keeps it vertical, making it less prone to deformation damage due to the stress transmitted by the float 4 during the upward movement of the float 2.

[0036] In another embodiment of the present invention, the outer elastic strip 7 is compressed and stored by the inner elastic strip 5 under sliding coupling.

[0037] As the inner elastic strip 5 moves upward, it maintains sliding contact with the outer elastic strip 7. Therefore, the outer elastic strip 7 stores the force it receives until the inner elastic strip 5 reaches its highest position and is released. This allows the outer elastic strip 7 to exert pressure on the inner elastic strip 5, and the force stored in the outer elastic strip 7, to push the inner elastic strip 5, which has no upward movement force, downward. This causes the inner rod 31 to move downward. After the liquid is added, the float 4 is pushed downward by the outer rod 32 and maintains a distance from the bottom of the float ball 21 again, allowing the float ball 21 to return to the liquid surface and be used for displaying the liquid level drop.

[0038] In another embodiment of the present invention, a top frame 6 for installing the outer elastic strip 7 is further included, and a platform shell 61 that slides in contact with the outer wall of the float 2 is fixedly installed on the top frame 6.

[0039] Specifically, a circumferentially arranged side rod 12 is detachably installed between the flange at the bottom of the measuring cylinder 1 and the top cover using bolts. Multiple support rods 62 are integrally formed on the top frame 6, and the ends of the support rods 62 are provided with holes that slide and fit on the outer wall of the side rods 12. At the same time, rubber rings are fixedly installed in the holes to increase the friction of the support rods 62 on the side rods 12.

[0040] Furthermore, a knob is threaded to the end of the support rod 62, and the knob passes through a hole and abuts against the side wall of the side rod 12, so that the support rod 62 can be fixed more firmly by turning the knob.

[0041] Furthermore, the top frame 6 has a hole in the middle for the float 2 to pass through. The platform shell 61 is welded to the bottom of the top frame 6, and the inner diameter of the platform shell 61 is the same as the inner diameter of the hole, which can also provide a limit for the float 2.

[0042] Furthermore, the cross-section of the platform shell 61 is shaped like a pen tip (composed of an inverted triangle and a trapezoid). The outer wall of the platform shell 61 (the inclined surface of the inverted triangle itself) and the inner wall of the platform shell 61 form a downward acute angle. When the float 2 moves upward in the platform shell 61, the acute angle position at the lower end of the platform shell 61 can scrape off the liquid remaining on the side wall of the float 2.

[0043] By changing the height of the top frame 6 to match the trigger position required after the inner rod 31 moves up to the end position, which corresponds to the highest position of the liquid added in the tank, the top frame 6 can be adjusted according to the actual amount of liquid added, thereby facilitating the switching of the state of the inner elastic strip 5 and causing the outer elastic strip 7 to release the downward pressure.

[0044] In another embodiment of the present invention, at the end of the travel of the moving position, the end of the inner elastic strip 5 slides into contact with the platform shell 61, so that the inner elastic strip 5 is embedded in the outer elastic strip 7 and the sliding coupling is released.

[0045] The inner elastic strip 5 slides from the side wall of the float 2 to the outer wall of the platform shell 61 until the upper end of the inner elastic strip 5 reaches the inner side of the arc of the outer elastic strip 7. At this time, the inner elastic strip 5 not only returns to the default state, but also exceeds the deformation of the default state. That is, the upper end of the inner elastic strip 5 moves away from the axis of the float 2, so that the inner elastic strip 5 has a deformation force that moves closer to the axis of the float 2.

[0046] In another embodiment of the present invention, the inner elastic strip 5 is provided with a protrusion 52, and the outer elastic strip 7 is provided with an inlet 72 for the protrusion 52 to be inserted.

[0047] Specifically, such as Figure 9 As shown, the inner elastic strip 5 has symmetrical side openings 51 at its end, while the missing part at the end of the inner elastic strip 5 presents a protrusion 52, and the lower end of the side opening 51 forms a shoulder 53 that is pressed by the outer elastic strip 7.

[0048] Furthermore, the outer elastic strip 7 has an elongated sliding hole 71, with an inlet 72 connected to the upper end of the sliding hole 71, and an outlet 73 arranged at equal intervals at the lower end of the sliding hole 71, and the outlet 73 and the inlet 72 have the same channel area.

[0049] Furthermore, a triangular block 611 is integrally formed at the upper end of the inverted triangular bevel of the platform shell 61, such as... Figure 7 As shown, triangular blocks 611 are circumferentially arranged on the outer wall of the platform shell 61, and their number corresponds to the number of inner elastic strips 5. Simultaneously, triangular blocks 611 extend into the inlet 72, with their ends protruding from the inner surface of the outer elastic strip 7. This facilitates the protrusion 52 reaching the inner arc surface of the outer elastic strip 7 along the inclined surface and triangular blocks 611, thereby enabling the switching of the position of the inner elastic strip 5. Figure 10 As shown, the dashed arrows on it represent the movement path of the protrusion 52.

[0050] When the protrusion 52 moves upward to the termination position under buoyancy, it is slidably guided by the platform shell 61 to the inside of the outer elastic strip 7. At this time, the inner elastic strip 5 between the two side openings 51 slides in the sliding hole 71, thus realizing the interlocking connection of the inner elastic strip 5 and the outer elastic strip 7, and making them cross-shaped; at this time, the outer elastic strips 7 on both sides of the sliding hole 71 press on the side shoulder 53, causing the pressure to be transmitted to the inner rod 31 through the inner elastic strip 5, so that the float 4 is pressed down below the float ball 21, and the outer elastic strip 7 always applies pressure to the inner elastic strip 5 during the downward movement of the float 4. Figure 8 As shown in Figure c, the float 21 can then perform numerical transmission normally.

[0051] Secondly, when the protrusion 52 reaches the outlet 73, the inner elastic strip 5, which needs to return to its default state, disengages the protrusion 52 from the outlet 73 and returns to the outer curved outer surface of the outer elastic strip 7. At this time, the liquid level is at its lowest, and the inner elastic strip 5 only maintains contact with the outer elastic strip 7 without any squeezing force. Therefore, the buoyancy generated by the float 4 actively causes the inner elastic strip 5 to move upward and make squeezing contact with the outer elastic strip 7. This, along with the rise of all the floats 4, lifts the float ball 21. That is, before adding liquid to the tank, the float ball 21 is lifted for protection. Figure 8 As shown in Figure d, and Figure 8 The steps a, b, c, d, and e cycle in sequence, thus satisfying the conditions for the float 21 to be protected and to operate normally.

[0052] In another embodiment of the present invention, the float 2 is provided with a sleeve 25 for engaging the protrusion 52, and the float 2 and the float 4 move synchronously in the engaged state.

[0053] After the float 21 detaches from the float rod 2 due to a break in the connection, the float 21 will naturally rotate and roll, causing liquid to seep through the opening at the connection point of the float 21. This increases the pressure of the float 21 on the float element 4 until all the float elements 4 are submerged in the liquid and float. At this point, the float elements 4 can still float with the rise of the liquid. At the same time, the inner elastic strip 5 will be pulled down by the float elements 4 until the protrusion 52 moves downward and is locked at the position of the retainer 25. During the upward movement of the inner elastic strip 5, it still slides with the outer elastic strip 7, but at this time the inner elastic strip 5 no longer bends and extends. The float rod 2 and multiple inner elastic strips 5 are connected, so that the float rod 2 can be buoyed by multiple float elements 4. Therefore, when float 21 fails, float 21 in storage chamber 33 still keeps in contact with the lower end of float rod 2, and float rod 2 moves up and down with float 21, still having the function of transmitting values. Float 4 can also drive float rod 2 up and down. However, the weight of float 21 will be applied to all float 4, causing the value display range to change, thus reminding the staff (for example, if the original value range was 20-100, when float 21 sinks, float rod 2 cannot reach the original height, and the value changes to 20-70, and the magnetic flip has a significant positional change, thus forming an effective reminder function).

[0054] In another embodiment of the present invention, the float 2 is provided with a slide 23 that slides in contact with the protrusion 52.

[0055] Specifically, the slide 23 is arranged circumferentially on the side wall of the float 2, and the inner wall of the upper end of the slide 23 is rounded to facilitate the upper end of the protrusion 52 to slide into the slide 23.

[0056] Furthermore, the sleeve 25 is integrally formed in the lower inner wall of the slide 23 and is symmetrically arranged to form a space for engaging the protrusion 52, so that the inner elastic strip 5 is hung in the slide 23, and the inner elastic strip 5 is pressed by the outer elastic strip 7, thus preventing the protrusion 52 from detaching from the sleeve 25.

[0057] Furthermore, the slide 23 has multiple grooves 24, and after the protrusion 52 slides into the slide 23, it is slidably connected to the multiple grooves 24 in sequence, such as... Figure 7 As shown, the cross-section of groove 24 presents an inverted right-angled triangle, with the smallest acute angle of the right-angled triangle pointing downwards.

[0058] The protrusion 52 slides into the rounded inner wall of the slide 23 and slides sequentially into the groove 24. Under the conditions of the drop in the groove 24 and the pressure applied by the outer elastic strip 7 on the protrusion 52 (after the float 21 is filled with liquid, the gravity it generates prevents the float 4 from reaching the highest position, so it will not perform cross-circulation action, that is, the outer elastic strip 7 always applies pressure to the inner elastic strip 5), the end of the protrusion 52 suddenly hits the bottom of the groove 24, thus making a knocking sound. The purpose is to remind the staff. The lower end of the float 2 will also scrape against the side wall of the float 21, thus making an abnormal noise, which strengthens the reminder effect.

[0059] Working principle: When the protrusion 52 moves upward to the termination position under the buoyancy, it is slidably guided by the platform shell 61 to the inside of the outer elastic strip 7. The protrusion 52 then enters the inside of the outer elastic strip 7 from the inlet 72. At this time, the inner elastic strip 5 between the two side openings 51 slides in the sliding hole 71, while the outer elastic strips 7 on both sides of the sliding hole 71 press on the side shoulder 53, causing the pressure to be transmitted to the inner rod 31 through the inner elastic strip 5. This causes the float 4 to be pressed down below the float ball 21 and maintains a predetermined distance from the lower end of the float ball 21, so as not to interfere with the float ball 21 on the liquid surface to perform numerical display. During the downward movement of the float 4, the outer elastic strip 7 always applies pressure to the inner elastic strip 5. When the protrusion 52 reaches the outlet 73, the inner elastic strip 5, which needs to be restored to the default state, disengages the protrusion 52 from the outlet 73 and returns to the outer curved outer surface of the outer elastic strip 7. At this time, the liquid level is at its lowest, and the inner elastic strip 5 only maintains contact with the outer elastic strip 7 without any squeezing force. Therefore, the buoyancy generated by the float 4 actively causes the inner elastic strip 5 to move upward and make squeezing contact with the outer elastic strip 7. Along with all the floats 4 rising, the float ball 21 is lifted, so that the float ball 21 does not transmit stress to the liquid surface. This achieves protection for the connection part and the float rod 2, and greatly reduces the problem of damage to the float rod 2 and the connection part due to force.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A float-type liquid level gauge for measuring liquid level in a tank, characterized in that, It includes a measuring cylinder equipped with a float and a buoy, and also includes an outer rod that is circumferentially distributed outside the buoy and maintains a predetermined distance from it; The outer rods are fixedly mounted with floats located at the bottom of the float, and multiple outer rods move coaxially with respect to the float, giving the floats the following two positions: By default, the float and the float ball maintain a predetermined distance. The float moves upward and remains in contact with the buoy; An inner rod is fixedly installed on the outer rod, and multiple inner rods slide vertically on a partition plate fixedly installed inside the measuring cylinder; An inner elastic strip is fixedly installed at the end of the inner rod, and an outer elastic strip is slidably coupled to the outside of the inner elastic strip; The upper end of the inner elastic strip bends in the opposite direction to the lower end of the outer elastic strip bends, and the inner elastic strip is driven by the upward movement of the float to slide and connect with the outer elastic strip, so that the outer elastic strip deforms and stores energy, and causes multiple floats to detach from the liquid surface and move upward. The inner elastic strip is provided with a protrusion, and the outer elastic strip is provided with an inlet for the protrusion to be inserted. The float is provided with a sleeve for engaging the protrusion, and the float and the protrusion move synchronously in the engaged state; The float is provided with a slide rail that makes sliding contact with the protrusion; Under sliding coupling, the outer elastic strip is compressed and stores force by the inner elastic strip; It also includes a top frame for installing the external elastic strip, on which a platform shell that slides in contact with the outer wall of the float is fixedly installed.

2. The tank liquid level measuring float level gauge according to claim 1, characterized in that, When the position is shifted, the inner elastic strip is bent by force and its end abuts against the side wall of the float.

3. The tank liquid level measuring float level gauge according to claim 1, characterized in that, At the end of the travel of the moving position, the end of the inner elastic strip makes sliding contact with the platform shell, so that the inner elastic strip is embedded in the outer elastic strip and the sliding coupling is released.

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