Liquid level floating ball device

Abstract

The utility model discloses a liquid level floating ball device, which relates to the technical field of liquid level measurement, and comprises a support rod, a floating ball, a floating ball and a floating ball, the magnetic detection assembly is arranged in the mounting cavity; the floating ball is arranged on the periphery of the supporting rod in a sliding mode; and the magnet is embedded in the floating ball, and the floating ball slides along the supporting rod along with the liquid, so that the magnet is close to or far away from the magnetic detection assembly. According to the technical scheme, the mode that the magnet is embedded into the inner side of the floating ball is adopted, metal impurities in a detection medium adsorbed by the floating ball are reduced, and therefore the accuracy of the liquid level floating ball device is improved.

Description

Technical Field

[0001] The utility model relates to a liquid level measurement technology, in particular to a liquid level float device. Background Art

[0002] A liquid level float is a commonly used liquid level measurement device that uses the principle of buoyancy to detect the liquid level in a container. As the liquid level in the container changes, the float rises or falls accordingly, and mechanically converts this change into a signal output for monitoring, alarming, or controlling the liquid level. Currently, existing liquid level float devices typically utilize a combination of a strongly magnetic float and a support rod, with liquid level detection achieved through a magnetic detection device within the support rod.

[0003] However, during long-term use, the existing liquid level float device has the problem of not being able to send accurate signals. Utility Model Content

[0004] The main purpose of the utility model is to provide a liquid level float device, aiming to improve the accuracy of the liquid level float device.

[0005] To achieve the above-mentioned purpose, the liquid level float device proposed in the present invention includes:

[0006] A support rod having a closed mounting cavity on its inner side;

[0007] A magnetic detection component is disposed in the mounting cavity;

[0008] a float, slidably disposed on the outer periphery of the support rod; and

[0009] The magnet is embedded in the float, and the float slides along the support rod following the liquid, so that the magnet approaches or moves away from the magnetic detection component.

[0010] In one embodiment, the detection radius of the magnetic detection component is 3 to 5 mm.

[0011] In one embodiment, the magnet has a magnetic strength of 300 to 500 Gs.

[0012] In one embodiment, the float is made of polytetrafluoroethylene.

[0013] In one embodiment, the magnet is annular, a limiting ring groove is provided on the inner side of the float, and the magnet is disposed in the limiting ring groove.

[0014] In one embodiment, the liquid level float device further includes positioning cards, two of which are arranged at intervals along the extending direction of the support rod, and the two positioning cards are respectively located on both sides of the float.

[0015] In one embodiment, the liquid level float device further includes a spring, which is sleeved on the outer circumference of the support rod, one end of the spring is connected to a positioning card located below the float, and the other end of the spring is connected to the float.

[0016] In one embodiment, the liquid level float device further includes a limiting sleeve, which is protruding from the side of the float facing the spring, and the spring is sleeved outside the limiting sleeve.

[0017] In one embodiment, the liquid level float device further comprises a mounting portion, which is provided at the top end of the support rod and is used to be connected to a container so that the liquid level float device can perform measurements.

[0018] In one embodiment, a pressing portion is provided at one end of the support rod close to the mounting portion. The pressing portion is arranged in a ring shape around the outer circumference of the support rod, and the pressing portion abuts against the inner wall of the container on the side facing the mounting portion.

[0019] In the technical solution provided by the present invention, a support rod provides an integral structural framework for the liquid level float device. Furthermore, a sealed mounting cavity is provided within the support rod, which accommodates a magnetic detection assembly. The magnetic detection assembly is a key component of the liquid level float device, detecting a magnet that moves with changes in the liquid level. Furthermore, the float provides support for the magnet, sliding along the support rod as the liquid level changes, thereby changing the distance between the magnet and the magnetic detection assembly. The liquid level of the detection medium is determined by the magnet entering or leaving the detection range of the magnetic detection assembly. Furthermore, the magnet is embedded within the float, effectively reducing the absorption of metal impurities. This improves the stability and accuracy of liquid level detection. The technical solution proposed in the embodiments of the present invention utilizes a magnet embedded within the float to minimize contact between the magnet and metal impurities while the float is floating in the detection medium, effectively reducing the likelihood of metal impurity absorption and thereby improving the accuracy of the liquid level float device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the liquid level float device provided by the utility model;

[0022] Figure 2 This is a schematic cross-sectional view of an embodiment of the liquid level float device provided by the utility model.

[0023] Description of Figure Numbers:

[0024] 10. Support rod; 20. Magnetic detection assembly; 30. Float; 31. Limiting ring groove; 40. Magnet; 50. Positioning card; 60. Spring; 70. Limiting sleeve; 80. Mounting part; 90. Tightening part.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] During liquid level measurement, a strong magnetic float works in conjunction with a magnetic detection device to detect liquid level. Over time, the strong magnetic float can absorb metallic impurities in the detection medium. This absorption can increase the float's weight, affecting its free movement and, consequently, the accuracy of liquid level measurement.

[0030] In view of this, an embodiment of the present invention provides a liquid level float device, which can reduce the adsorption of metal impurities during the operation of the float, so that the magnet that can trigger the magnetic detection component is embedded in the float and separated from the liquid, which can effectively reduce the adsorption of metal impurities in the detection medium and reduce the change in the weight of the float, thereby improving the accuracy of the liquid level float device.

[0031] In order to better understand the above technical solution, the above technical solution is described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 、 Figure 2 As shown, the embodiment of the present invention provides a liquid level float device for improving the accuracy of the liquid level float device. The liquid level float device includes:

[0033] The support rod 10 has a closed mounting cavity on its inner side;

[0034] The magnetic detection component 20 is arranged in the mounting cavity;

[0035] The float 30 is slidably disposed on the outer periphery of the support rod 10; and

[0036] The magnet 40 is embedded in the float 30 , and the float 30 slides along the support rod 10 following the liquid, so that the magnet 40 moves closer to or away from the magnetic detection assembly 20 .

[0037] In the technical solution adopted in this embodiment, the support rod 10 provides an integral structural framework for the liquid level float device. Furthermore, a closed mounting cavity is provided within the support rod 10, within which the magnetic detection assembly 20 can be placed. The magnetic detection assembly 20 is a crucial component of the liquid level float device, capable of detecting a magnet 40 that moves with changes in the liquid level. Furthermore, the float 30 provides support for the magnet 40, allowing it to slide along the support rod 10 as the liquid level changes, thereby changing the distance between the magnet 40 and the magnetic detection assembly 20. The liquid level of the detection medium is determined by the magnet 40 entering or exiting the detection range of the magnetic detection assembly 20. Furthermore, the magnet 40 is embedded within the float 30, effectively reducing the adsorption of metal impurities. This improves the stability and accuracy of liquid level detection. The technical solution proposed in the embodiment of the present invention utilizes the method of embedding the magnet 40 into the interior of the float 30 so that the contact between the magnet 40 and metal impurities can be reduced during the floating process of the float 30 in the detection medium, effectively reducing the possibility of adsorbing metal impurities, thereby improving the accuracy of the liquid level float device.

[0038] Specifically, the liquid level float device includes a support rod 10 , a magnetic detection assembly 20 , a float 30 and a magnet 40 .

[0039] As a main structural component of the liquid level float device, the support rod 10 has a certain load-bearing capacity and can provide support.

[0040] The magnetic detection assembly 20 is disposed within the mounting cavity of the support rod 10 and is used to detect the magnet 40 that moves with changes in the liquid level. The magnetic detection assembly 20 may include a Hall effect sensor, a magnetoresistor, or other type of magnetic sensor, capable of converting position changes of the magnet 40 into electrical signals. It is understood that when the magnet 40 leaves the detection range of the magnetic detection assembly 20, the magnetic detection assembly 20 issues an alarm; when the magnet 40 enters the detection range of the magnetic detection assembly 20, the magnetic detection assembly 20 detects the magnet 40 and converts it into an electrical signal for output.

[0041] The float 30 is slidably mounted on the support rod 10. It can move toward the magnetic detection assembly 20 due to the buoyancy of the test medium, or away from the magnetic detection assembly 20 due to its own gravity, thereby enabling real-time monitoring of the test medium's liquid level. Made of non-magnetic material, the float 30 can slide freely on the support rod 10 without attracting metallic impurities that could affect test results. Furthermore, using a solid float 30 instead of a hollow one reduces the risk of deformation caused by high air pressure.

[0042] The magnet 40 mainly uses its magnetic properties to detect the liquid level. The magnet 40 is embedded inside the float 30 to reduce the adsorption of metal impurities. Moreover, the magnet 40 can move up and down in the liquid with the float 30, and the position change of the magnet 40 can be sensed by the magnetic detection component 20, thereby realizing the monitoring and control of the liquid level. It can be understood that in a liquid-free environment, the float 30 is carried away from the magnetic detection component 20 by gravity. At this time, the magnet 40 leaves the detection range of the magnetic detection component 20, thereby detecting insufficient liquid level and the magnetic detection component 20 alarming; when in the detection medium, the float 30 is carried by the buoyancy of the magnet 40 into the magnetic detection range to achieve the function of the detection medium, and the output signal shows that the liquid level has reached the specified position.

[0043] Further, refer to Figure 2 In one embodiment of the present invention, the detection radius of the magnetic detection component 20 is 3 to 5 mm.

[0044] In the technical solution adopted in this embodiment, by setting the detection radius of the magnetic detection assembly 20 to 3 to 5 mm, the reliability and accuracy of the liquid level float device can be ensured, and liquid level changes can be effectively monitored. It is understood that the travel of the float 30 is greater than the detection radius of the magnetic detection assembly 20.

[0045] Furthermore, in one embodiment of the present invention, the magnet 40 has a magnetic strength of 300 to 500 Gs.

[0046] In the technical solution adopted in this embodiment, by setting the magnetism of the magnet 40 to 300 to 500 Gs, the magnetic strength in this range can ensure that the magnetic detection component 20 can accurately detect the magnet 40 within a short distance, while reducing the adsorption of metal impurities in the detection medium by excessively strong magnetism, thereby improving the accuracy and reliability of liquid level detection.

[0047] Furthermore, in one embodiment of the present invention, the float 30 is made of polytetrafluoroethylene.

[0048] In the technical solution adopted in this embodiment, float 30 can be made of polytetrafluoroethylene (PTFE). PTFE has excellent heat resistance and can be used for long periods of time in heated containers and equipment. PTFE also has a very low coefficient of friction, one of the lowest among solid materials. This allows float 30 to move smoothly during liquid level fluctuations. PTFE also has very low surface tension, which reduces the amount of impurities adhering to its surface. This helps float 30 move freely in the liquid, reduces maintenance requirements, and further reduces the adsorption of metallic impurities.

[0049] Further, refer to Figure 2In one embodiment of the present invention, the magnet 40 is annular, a limiting ring groove 31 is provided on the inner side of the float 30 , and the magnet 40 is disposed in the limiting ring groove 31 .

[0050] In the technical solution adopted in this embodiment, the magnet 40 is configured to be annular, and a limiting annular groove 31 is defined inside the float 30, with the magnet 40 mounted in the limiting annular groove 31. This configuration allows the shape of the magnet 40 to conform to the float 30, thereby enabling the magnet 40 to be more stably placed in the limiting annular groove 31. Furthermore, configuring the magnet 40 as an annular structure enhances the magnetic stability of the magnet 40, ensuring the magnetic sensing effect of the magnet 40 and the magnetic detection assembly 20. It is understood that the magnet 40 can be stably mounted inside the float 30, and during the sliding process of the liquid level float 30, the magnet 40 remains stationary relative to the float 30.

[0051] Further, refer to Figure 1 In one embodiment of the present invention, the liquid level float device further includes a positioning card 50 , two positioning cards 50 are arranged at intervals along the extension direction of the support rod 10 , and the two positioning cards 50 are respectively located on both sides of the float 30 .

[0052] In this embodiment, positioning clips 50 are provided to restrict the movement of the float 30, ensuring stable vertical movement of the float 30 on the support rod 10. Two positioning clips 50 are spaced apart along the extension of the support rod 10, providing better control and ensuring vertical movement of the float 30, thereby improving the accuracy of liquid level detection. In this embodiment, when the magnetic detection assembly 20 detects the magnet 40, the distance between the top of the float 30 and one of the positioning clips 50 located above the float 30 is 3 mm.

[0053] Further, refer to Figure 1 、 Figure 2 In one embodiment of the present invention, the liquid level float device also includes a spring 60, which is sleeved on the outer circumference of the support rod 10, one end of the spring 60 is connected to a positioning card 50 located below the float 30, and the other end of the spring 60 is connected to the float 30.

[0054] In the technical solution adopted in this embodiment, the spring 60 is provided to provide a force balance to ensure that the float 30 can move stably when the liquid level changes. The spring 60 is sleeved on the outer circumference of the support rod 10. The spring 60 has a first end and a second end relative to each other, wherein the first end can be connected to a positioning card 50 located below the float 30, and the second end can be connected to the float 30. It can ensure that the float 30 can move up and down flexibly when the liquid level changes. At the same time, when the liquid level drops, the spring 60 will be compressed by the gravity of the solid float 30. In this embodiment, the use of the spring 60 can provide additional stability and reduce the floating of the float 30 due to liquid fluctuations. The spring 60 is used in conjunction with the positioning card 50 to ensure that the float 30 can accurately trigger the magnetic sensing component at a specific liquid level. The positioning card 50 adopts a cylindrical tight fit to effectively reduce the risk of the spring 60 getting stuck and penetrating.

[0055] Further, refer to Figure 1 、 Figure 2 In one embodiment of the present invention, the liquid level float device further includes a limiting sleeve 70 , which is protruding from the side of the float 30 facing the spring 60 , and the spring 60 is sleeved on the outside of the limiting sleeve 70 .

[0056] In the technical solution adopted in this embodiment, the provision of a limit sleeve 70 provides a fixed position limit for the float 30, ensuring that the combination of the float 30 and the spring 60 operates correctly during liquid level fluctuations. This reduces the possibility of overcompression of the spring 60, protects the entire device from damage, and ensures accurate liquid level control. In this embodiment, the use of the limit sleeve 70 limits the movement of the float 30. When the float 30 reaches the limit position, the spring 60 is compressed, generating a reaction force that cooperates with the buoyancy of the liquid to move the float 30 toward the magnetic detection assembly 20.

[0057] Further, referring to 1, in one embodiment of the present invention, the liquid level float device further includes a mounting portion 80, which is provided at the top end of the support rod 10 and is used to connect with the container to facilitate measurement by the liquid level float device.

[0058] In the technical solution adopted in this embodiment, the liquid level float device can be fixed to a key position in the liquid container by providing a mounting portion 80. In this embodiment, the mounting portion 80 can be a threaded post or rod, and the liquid container is provided with mounting holes corresponding to the threaded post or rod, allowing the liquid level float device to be easily, quickly, and securely mounted on the container.

[0059] Further, refer to Figure 1In one embodiment of the present invention, a tightening portion 90 is provided at one end of the support rod 10 close to the mounting portion 80. The tightening portion 90 is arranged in a ring shape around the outer circumference of the support rod 10, and the tightening portion 90 abuts against the inner wall of the container on the side facing the mounting portion 80.

[0060] In the technical solution adopted in this embodiment, the abutting portion 90 is provided to abut against the inner wall of the container, thereby strengthening the fixing effect between the liquid level float device and the container, reducing the possibility of the support rod 10 moving or vibrating under the action of liquid flow or external forces, thereby ensuring the stability of the liquid level float device. The abutting portion 90 can be a fixed ring surrounding the outer circumference of the support rod 10, and can be integrally formed with the support rod 10. The diameter of the fixed ring is larger than the diameter of the mounting hole on the container. At the same time, when one side of the fixed ring abuts against the inside of the container, it can also effectively reduce the risk of gas leakage from the gap between the support rod 10 and the container, which is crucial for maintaining the stability of the liquid level and pressure in the container.

[0061] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A liquid level float device, characterized in that: include: A support rod having a closed mounting cavity on its inner side; A magnetic detection component is disposed in the mounting cavity; A float ball is slidably arranged on the outer periphery of the support rod; as well as The magnet is embedded in the float, and the float slides along the support rod following the liquid, so that the magnet approaches or moves away from the magnetic detection component.

2. The liquid level float device according to claim 1, characterized in that: The detection radius of the magnetic detection component is 3 to 5 mm.

3. The liquid level float device according to claim 1, characterized in that: The magnet has a magnetic force of 300 to 500 Gs.

4. The liquid level float device according to claim 1, characterized in that: The material of the float is polytetrafluoroethylene.

5. The liquid level float device according to claim 1, characterized in that: The magnet is annular, a limiting ring groove is provided on the inner side of the float, and the magnet is arranged in the limiting ring groove.

6. The liquid level float device according to claim 1, characterized in that: The liquid level float device further includes positioning cards. Two positioning cards are arranged at intervals along the extending direction of the support rod, and the two positioning cards are respectively located on both sides of the float.

7. The liquid level float device according to claim 6, characterized in that: The liquid level float device also includes a spring, which is sleeved on the outer circumference of the support rod. One end of the spring is connected to a positioning card located below the float, and the other end of the spring is connected to the float.

8. The liquid level float device according to claim 7, characterized in that: The liquid level float device further comprises a limiting sleeve, which is protrudingly arranged on the side of the float facing the spring, and the spring is sleeved on the outside of the limiting sleeve.

9. The liquid level float device according to claim 1, characterized in that: The liquid level float device further comprises a mounting portion, which is provided at the top end of the support rod and is used for connecting with a container so as to facilitate measurement by the liquid level float device.

10. The liquid level float device according to claim 9, characterized in that: An abutting portion is provided at one end of the support rod close to the mounting portion. The abutting portion is arranged in a ring shape around the outer circumference of the support rod. The abutting portion abuts against the inner wall of the container on a side facing the mounting portion.

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