Liquid level transmitter

Abstract

The utility model relates to a liquid level transmitter which comprises an outer shell, a guide rod connected with the outer shell and a floating ball connected with the guide rod, the floating ball comprises an upper hemisphere and a lower hemisphere, the upper hemisphere and the lower hemisphere are provided with communicating holes connected with the guide rod, and gaps are reserved between the inner walls of the communicating holes and the outer wall of the guide rod. Steel ball holes are formed in the inner wall of the communicating hole at equal intervals, balls are movably installed in the steel ball holes, and the balls are in rolling fit with the outer surface of the guide rod. According to the structural design of the liquid level transmitter, the problem that in the prior art, a floating ball and a guide rod are prone to being stuck is solved, the reliability and efficiency of liquid level measurement are remarkably improved, and the liquid level transmitter has important value for optimizing industrial production process control, storage tank liquid level management and other application fields needing precise liquid level monitoring.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level transmitters, in particular to a liquid level transmitter. Background Art

[0002] At present, as an important liquid level monitoring device, liquid level transmitters are widely used in various industrial production process control, tank liquid level measurement and various water treatment facilities. Traditional liquid level transmitters are mainly composed of an outer shell, a guide rod and a float that slides with the guide rod. The float rises and falls with the liquid level to reflect the liquid level changes in the container in real time, and converts this mechanical displacement into an electrical signal output. However, in actual application, the existing technology has certain limitations and problems.

[0003] Most existing floats and guide rods are designed to fit tightly to ensure good stability, but this design will increase the friction resistance between the float and the guide rod. When the liquid environment is complex, such as containing impurities or condensation, the friction resistance will be further aggravated, and may even cause the float to get stuck on the guide rod, seriously affecting its normal upward movement, resulting in large errors in the liquid level information transmitted by the level transmitter, reducing the accuracy and reliability of the liquid level measurement.

[0004] In view of this, it is urgent to develop a new type of liquid level transmitter that can effectively solve the problems of high friction and easy jamming caused by the close fit between the float and the guide rod, and improve the sensitivity of the float movement and the accuracy of the measurement results. The present invention is aimed at the above problems and provides an innovative liquid level transmitter design. Utility Model Content

[0005] In view of the deficiencies in the background technology, the utility model provides a liquid level transmitter.

[0006] The technical solution adopted by the utility model is: a liquid level transmitter, including an outer shell, a guide rod connected to the outer shell and a floating ball connected to the guide rod, the floating ball includes an upper hemisphere and a lower hemisphere, the upper hemisphere and the lower hemisphere are provided with connecting holes connected to the guide rod, a gap is left between the inner wall of the connecting hole and the outer wall of the guide rod, steel ball holes are evenly spaced on the inner wall of the connecting hole, balls are movably installed in the steel ball holes, and the balls are rollingly matched with the outer surface of the guide rod.

[0007] Furthermore, a magnetic sleeve is sleeved on the inner wall of the outer circle of the communicating hole of the upper hemisphere.

[0008] Furthermore, the width of the gap is 1 mm-5 mm.

[0009] Furthermore, an upper connecting step and a lower connecting step extend outwardly from the connection between the upper hemisphere and the lower hemisphere, and the upper connecting step and the lower connecting step are fixedly connected by bolts.

[0010] Furthermore, a clamping plate is clamped and fixed between the upper connecting step and the lower connecting step, and a hollow ball is connected to the clamping plate.

[0011] Furthermore, the hollow sphere is an elliptical structure.

[0012] Furthermore, the bottom of the guide rod is threadedly connected to a limiting screw head.

[0013] The beneficial effects of the utility model are:

[0014] 1. Reduce friction and prevent jamming: By opening connecting holes on the upper and lower hemispheres of the float and leaving appropriate gaps between the inner wall of the hole and the outer wall of the guide rod, the direct contact area between the float and the guide rod is effectively reduced, thereby greatly reducing the friction resistance between the two. At the same time, steel ball holes are set at equal intervals on the inner wall of the connecting hole, and the movable balls can roll freely in the holes and form a rolling fit with the outer surface of the guide rod. This rolling friction replaces the original sliding friction, greatly reduces the friction coefficient, significantly reduces the phenomenon of the float jamming caused by excessive friction, and ensures the smoothness of the float floating up and down on the liquid surface.

[0015] 2. Improve sensitivity and accuracy: As the friction between the float and the guide rod is reduced, the response speed of the float to liquid level changes is significantly improved, which improves the sensitivity of the level transmitter, enabling it to capture subtle changes in liquid level more quickly and accurately, thereby improving the real-time and accuracy of liquid level measurement.

[0016] 3. Enhanced durability and adaptability: Due to the presence of the ball, even if there are impurities or condensation in the liquid, some attachments can be automatically removed by the rolling of the ball, which enhances the durability and adaptability of the equipment under complex working conditions and extends the service life of the liquid level transmitter.

[0017] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0021] Figure 3 for Figure 1 Enlarged schematic diagram of point B in the middle.

[0022] Figure 1-3 In the figure: 1. outer shell; 2. guide rod; 3. upper hemisphere; 4. lower hemisphere; 5. connecting hole; 6. gap; 7. ball; 8. magnetic sleeve; 9. upper connecting step; 10. lower connecting step; 11. bolt; 12. clamping plate; 13. hollow ball; 14. limit screw head. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] The utility model provides a liquid level transmitter.

[0026] In this embodiment, refer to Figure 1-3 The liquid level transmitter comprises an outer shell 1, a guide rod 2 connected to the outer shell 1 and a floating ball connected to the guide rod, the floating ball comprises an upper hemisphere 3 and a lower hemisphere 4, the upper hemisphere and the lower hemisphere are provided with a connecting hole 5 connected to the guide rod, a gap 6 is left between the inner wall of the connecting hole and the outer wall of the guide rod, steel ball holes are evenly spaced on the inner wall of the connecting hole, a ball 7 is movably installed in the steel ball hole, and the ball rolls with the outer surface of the guide rod.

[0027] In the above technical solution, the float includes an upper hemisphere and a lower hemisphere, and a connecting hole is set in the upper hemisphere and the lower hemisphere to connect with the guide rod. A certain gap is left between the inner wall of the connecting hole and the outer wall of the guide rod. At the same time, a steel ball hole with a ball is set on the inner wall, and the ball and the outer surface of the guide rod are rolled together. The advantage of this design is that the friction is reduced by rolling the ball instead of direct sliding contact, which prevents the float from getting stuck on the guide rod due to excessive friction, and improves the flexibility and accuracy of the float moving with the liquid level change, thereby ensuring the measurement accuracy and response speed of the liquid level transmitter.

[0028] Specifically, a magnetic sleeve 8 is sleeved on the inner wall of the outer circle of the communicating hole of the upper hemisphere.

[0029] The upper hemisphere has the same function as the existing magnetic float, the difference is that in this application, a magnetic sleeve is only provided in the upper hemisphere. The magnetic sleeve exists to interact with the magnetic sensitive element located inside or outside the guide rod to realize the electrical signal conversion of the liquid level change, which is convenient for remote transmission and control. At the same time, it may also play a role in strengthening the positioning or stabilizing the position of the float on the guide rod. Its working principle is the same as that of the existing liquid level transmitter, and no further elaboration will be made here.

[0030] Specifically, the width of the gap is 1 mm-5 mm.

[0031] After repeated tests, the width of the gap is 1mm-5mm, which is more suitable. This range is selected to ensure that the ball can roll freely in the gap to reduce friction, while maintaining sufficient stability to avoid the floating ball shaking due to too large a gap or the problem of sticking due to too small a gap.

[0032] Specifically, an upper connecting step 9 and a lower connecting step 10 extend outwardly from the connection between the upper hemisphere and the lower hemisphere, and the upper connecting step and the lower connecting step are fixedly connected by bolts 11.

[0033] The upper hemisphere and the lower hemisphere are connected by bolts, that is, they are fixed by bolts through the upper connecting step and the lower connecting step. This structural design not only ensures the overall strength and sealing performance of the float, but also facilitates disassembly and maintenance, and is conducive to assembly and replacement of parts.

[0034] Specifically, a clamping plate 12 is clamped and fixed between the upper connecting step and the lower connecting step, and a hollow ball 13 is connected to the clamping plate; the hollow ball is an elliptical structure.

[0035] The hollow ball can play the role of counterweight balance, sensing liquid level changes, and ensuring the buoyancy of the float.

[0036] Specifically, the bottom of the guide rod is threadedly connected with a limiting screw head 14 .

[0037] The limit screw is mainly used to limit the movement range of the float to prevent the float from falling off the guide rod or affecting the normal operation of the level transmitter due to excessive sinking. It also facilitates the installation and adjustment of the entire device. Through the limit screw, the user can set the effective level measurement range according to actual needs.

[0038] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. A liquid level transmitter, comprising an outer shell, a guide rod connected to the outer shell, and a float connected to the guide rod, characterized in that: The floating ball comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere and the lower hemisphere are provided with a connecting hole connected to the guide rod, a gap is left between the inner wall of the connecting hole and the outer wall of the guide rod, and steel ball holes are provided at equal intervals on the inner wall of the connecting hole, and balls are movably installed in the steel ball holes, and the balls are rollingly matched with the outer surface of the guide rod; An upper connecting step and a lower connecting step are extended outwardly from the connection between the upper hemisphere and the lower hemisphere, and the upper connecting step and the lower connecting step are fixedly connected by bolts; A clamping plate is clamped and fixed between the upper connecting step and the lower connecting step, and a hollow ball is connected to the clamping plate.

2. The liquid level transmitter according to claim 1, characterized in that: A magnetic sleeve is sleeved on the inner wall of the outer circle of the communicating hole of the upper hemisphere.

3. The liquid level transmitter according to claim 1, characterized in that: The width of the gap is 1 mm-5 mm.

4. The liquid level transmitter according to claim 3, characterized in that: The hollow sphere is an elliptical structure.

5. The liquid level transmitter according to claim 1, characterized in that: The bottom of the guide rod is threadedly connected with a limiting screw head.

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