Length-adjustable probe rod of magnetostrictive liquid level meter

Abstract

The utility model relates to the technical field of liquid level meters, and discloses a length-adjustable probe rod of a magnetostriction liquid level meter, which comprises an initial probe rod, the bottom end of the initial probe rod is connected with a pressing plate through a pressing assembly, and the lower inner part of the initial probe rod is connected with a connecting probe rod through an assembling assembly. A bottom plate is connected to the interior of the lower portion of the connecting probe rod through an assembling assembly, butt joint grooves are formed in the top of the bottom plate and the top of the connecting probe rod, the pressing plate is arranged in the butt joint grooves, a floater is arranged on the outer wall of the initial probe rod, a meter head is fixedly connected to the top of the initial probe rod, and a flange plate is fixedly connected to the outer wall of the initial probe rod. According to the utility model, the pressing plate extrudes the sealing ring, and the contraction spring is matched with the connecting rod, so that the sealing effect is better, liquid to be detected can be effectively prevented from invading and damaging internal conductive elements, the service life of the device is prolonged, the connecting mode of the connecting probe rod, the initial probe rod and the bottom plate is simple and convenient, and the length of the probe rod can be quickly adjusted to adapt to different detection requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level meter technical field especially relates to a kind of adjustable length's probe rod of magnetostrictive liquid level meter. BACKGROUND

[0002] The probe rod of magnetostrictive liquid level meter is the key component of liquid level measurement, and its function realization principle is as follows: by setting magnetostrictive wire inside the probe rod, the permanent magnet in the float and the magnetostrictive wire interact, generate specific mechanical stress wave, so as to calculate the liquid level height.The length of the probe rod of traditional magnetostrictive liquid level meter is fixed, and it is usually spliced by single or multiple fixed-length probe rods.This splicing structure is connected by simple thread connection mode, and it is difficult to effectively protect the internal conductive element at the connection position.

[0003] The sealing performance of the connection position of traditional probe rod is poor, and when measuring liquid with corrosiveness or conductivity, the measured liquid is easy to invade the connection position, causing the damage of internal magnetostrictive wire and other conductive elements, which not only reduces the measurement accuracy of liquid level meter, but also greatly shortens the service life of liquid level meter, increases the maintenance cost and downtime of equipment, and brings adverse effects to the production and operation of enterprises, and for this technical problem, the present application proposes a kind of adjustable length's probe rod of magnetostrictive liquid level meter. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art, and provides a kind of adjustable length's probe rod of magnetostrictive liquid level meter, and the sealing effect is better by extruding sealing ring of pressing plate and retracting spring cooperation connecting rod, can effectively prevent the invasion of measured liquid and damage internal conductive element, prolong the service life of device, the connection mode of connecting probe rod and initial probe rod, bottom plate is simple and convenient, and the length of probe rod can be quickly adjusted to adapt to different detection requirements.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] An adjustable length's probe rod of magnetostrictive liquid level meter, including initial probe rod, the initial probe rod bottom end is connected with pressing plate by pressing assembly, the lower inside of initial probe rod is connected with connecting probe rod by assembling assembly, the lower inside of connecting probe rod is connected with bottom plate by assembling assembly, the bottom plate and the top of connecting probe rod are all equipped with butt joint groove, the pressing plate is located inside butt joint groove, the outer wall of initial probe rod is equipped with float, the top of initial probe rod is fixedly connected with table head, the outer wall of initial probe rod is fixedly connected with flange plate, and the flange plate is located above float.

[0007] Further, the pressing assembly includes connecting rod arranged inside the lower of the initial probe rod and connecting probe rod, and the connecting rod top is connected inside the initial probe rod and connecting probe rod by retracting spring.

[0008] Further, the pressing plate top is provided with a sealing ring, and the connecting rod penetrates the inside of the sealing ring.

[0009] Further, the assembly assembly comprises a connecting groove formed below the initial probe rod and the connecting probe rod, and the connecting probe rod and the bottom plate top are fixedly connected with a connecting piece, and the outer wall of the connecting piece is screw-connected with the inner wall of the connecting groove.

[0010] Further, the inside of the pressing plate is a hollow structure, and the connecting piece is arranged in the inside of the pressing plate.

[0011] Further, the top of the connecting piece is provided with a guide plate, and the bottom of the guide plate is connected with the inside of the connecting piece through a tight spring.

[0012] Further, the guide plate is arranged in the inside of the connecting groove.

[0013] The utility model has the advantages of the following beneficial effects:

[0014] 1. In the utility model, the guide plate and the magnetostrictive wire are in close contact through the connecting piece, ensuring the stability of the electrical connection. At the same time, the sealing structure design of the initial probe rod and the connecting probe rod, and the connecting probe rod and the bottom plate is ingenious, the pressing plate extrudes the sealing ring, and the shrink spring cooperates with the connecting rod to make the sealing effect better, which can effectively prevent the intrusion of the measured liquid into the internal conductive element and ensure the stable operation of the device in different liquid depth detection environments, prolonging the service life of the device.

[0015] 2. In the utility model, the connecting probe rod and the initial probe rod, and the bottom plate are connected in a simple and convenient manner, and the assembly can be completed by screwing in the connecting piece. Moreover, this assembly method not only ensures the reliability of the electrical connection, but also realizes good sealing at the connection, can quickly adjust the length of the probe rod to adapt to different detection requirements, improves the applicability and working efficiency of the device, and provides convenience for liquid depth detection work. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A perspective view of a magnetostrictive liquid level meter adjustable length probe rod is proposed for the utility model;

[0017] Figure 2 A guide plate structure schematic view of a magnetostrictive liquid level meter adjustable length probe rod is proposed for the utility model;

[0018] Figure 3 A pressing assembly structure schematic view of a magnetostrictive liquid level meter adjustable length probe rod is proposed for the utility model;

[0019] Figure 4The utility model provides a kind of inside structure schematic diagram of connecting piece of magnetostrictive liquid level meter adjustable length's probe rod is proposed.

[0020] Figure 5 The utility model provides a kind of bottom plate structure schematic diagram of magnetostrictive liquid level meter adjustable length's probe rod is proposed.

[0021] Legend:

[0022] 1, initial probe rod;2, flange plate;3, meter head;4, float;5, connecting probe rod;6, bottom plate;7, pressing plate;8, guide plate;9, connecting piece;10, contraction spring;11, connecting rod;12, sealing ring;13, tight spring. Specific embodiments

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] Referring to Figure 1 , Figure 3 and Figure 5 , the utility model provides an embodiment: a kind of magnetostrictive liquid level meter adjustable length's probe rod, including initial probe rod 1, initial probe rod 1 and connecting probe rod 5 below inside are all provided with connecting rod 11, connecting rod 11 top is connected in the inside of initial probe rod 1 and connecting probe rod 5 by contraction spring 10, pressing plate 7 top is provided with sealing ring 12, connecting rod 11 is through the inside of sealing ring 12, initial probe rod 1 below inside is connected with connecting probe rod 5 by connecting piece 9, connecting probe rod 5 below inside is connected with bottom plate 6 by assembling assembly, bottom plate 6 and connecting probe rod 5 top are all provided with butt joint groove, pressing plate 7 is arranged in the inside of butt joint groove, initial probe rod 1 outer wall is provided with float 4, initial probe rod 1 top is fixedly connected with meter head 3, initial probe rod 1 outer wall is fixedly connected with flange plate 2, flange plate 2 is located above float 4;

[0025] Specifically, in the process of connecting the initial probe rod 1 and the connecting probe rod 5 through the connecting piece 9, the pressing plate 7 on the initial probe rod 1 will enter the corresponding docking groove on the connecting probe rod 5, and when the connecting probe rod 5 is moved towards the initial probe rod 1, the pressing plate 7 in the docking groove will also move towards the bottom of the initial probe rod 1. The movement of the pressing plate 7 causes the connecting rod 11 on the pressing plate 7 to press the contraction spring 10 connected thereto, and the contraction spring 10 is contracted under the force, thereby driving the connecting rod 11 to shrink into the initial probe rod 1. With the contraction of the connecting rod 11, the sealing ring 12 between the pressing plate 7 and the initial probe rod 1 is pressed by the pressing plate 7 and adheres to the initial probe rod 1, forming an effective sealing structure that can prevent the measured liquid from entering the inside of the device from the connection between the initial probe rod 1 and the connecting probe rod 5, and avoid damaging the conductive elements inside by the measured liquid. The length of the initial probe rod 1 is assembled to a distance suitable for the depth of the liquid to be detected, and then the bottom plate 6 is installed. The bottom plate 6 is installed below the connecting probe rod 5 through the connecting piece 9 thereon, and the bottom of the connecting probe rod 5 is also equipped with a sealing structure composed of a pressing plate 7, a contraction spring 10, a connecting rod 11 and a sealing ring 12. When the bottom plate 6 is connected with the connecting probe rod 5, the sealing structure will work in the same way to seal the connection between the connecting probe rod 5 and the bottom plate 6, further ensuring the safety of the conductive elements inside the device. The current pulse is transmitted to the magnetostrictive wire through the meter head 3, and when the current reaches the float 4, the signal is transmitted back to the meter head 3, so as to calculate the liquid level.

[0026] With reference to Figure 2 And Figure 4 Wherein the initial probe rod 1 and the connecting probe rod 5 are provided with connecting grooves below, and the connecting probe rod 5 and the bottom plate 6 are fixedly connected with the connecting piece 9 on the top, the connecting piece 9 is threadedly connected to the inner wall of the connecting groove, the pressing plate 7 is hollow inside, the connecting piece 9 is arranged inside the pressing plate 7, the connecting piece 9 is provided with a guide plate 8 on the top, the guide plate 8 is connected to the inside of the connecting piece 9 through the tight spring 13 on the bottom, and the guide plate 8 is arranged inside the connecting groove.

[0027] Specifically, the end of the connecting probe rod 5 with the connecting piece 9 is accurately aligned with the connecting groove below the initial probe rod 1, and then the connecting probe rod 5 is slowly screwed into the inside of the connecting groove. As the connecting piece 9 gradually penetrates into the connecting groove, the guide plate 8 on the connecting piece 9 begins to contact the magnetostrictive wire in the initial probe rod 1. Continue to tighten the connecting probe rod 5, and at this time the guide plate 8 will exert pressure on the tight spring 13 connected thereto, causing the tight spring 13 to deform. Under the action force generated by the deformation of the tight spring 13, the contact between the tight spring 13 and the magnetostrictive wire becomes more intimate, thereby ensuring good electrical connection performance.

[0028] Working principle: first, according to the required detection liquid depth to assemble the device, by connecting the probe rod 5 is installed in the connecting piece 9 one end with the initial probe rod 1 below the connecting groove alignment, and then it is screwed into the connecting groove, so that the connecting piece 9 on the guide plate 8 and magnetostrictive wire in the initial probe rod 1 contact, and tighten the guide plate 8 on the tight spring 13 extrusion makes it deformation, under the action of tight spring 13, so that the tight spring 13 and magnetostrictive wire contact more closely, in the initial probe rod 1 and connecting probe rod 5 through the connecting piece 9 connection, the initial probe rod 1 on the pressure plate 7 will enter the connecting probe rod 5 on the docking slot, in the process of connecting probe rod 5 close to the initial probe rod 1, the pressure plate 7 in the docking slot will also close to the bottom of the initial probe rod 1, so that the connecting rod 11 on it to the shrink spring 10 extrusion, so that the connecting rod 11 to the initial probe rod 1 inside, so that the sealing ring 12 between the pressure plate 7 and the initial probe rod 1 is extruded to the initial probe rod 1 by the pressure plate 7, so as to be able to seal the initial probe rod 1 and connecting probe rod 5 connection place, prevent the internal conductive element is damaged by the liquid to be measured, the length of the initial probe rod 1 is assembled to the appropriate distance, then the bottom plate 6 through the connecting piece 9 on it is installed below the connecting probe rod 5, and the bottom of the connecting probe rod 5 is also installed the same pressure plate 7, shrink spring 10, connecting rod 11 and sealing ring 12 such sealing structure, so as to seal the connecting probe rod 5 and the bottom plate 6 connection place.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application has been made, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A magnetostrictive liquid level gauge probe rod of adjustable length comprising an initial probe rod (1), characterised in that: The bottom end of the initial probe rod (1) is connected with a pressing plate (7) through a pressing assembly, the lower inside of the initial probe rod (1) is connected with a connecting probe rod (5) through an assembling assembly, the lower inside of the connecting probe rod (5) is connected with a bottom plate (6) through an assembling assembly, the bottom plate (6) and the top of the connecting probe rod (5) are both provided with a butt joint groove, the pressing plate (7) is arranged in the inside of the butt joint groove, the outer wall of the initial probe rod (1) is provided with a float (4), the top of the initial probe rod (1) is fixedly connected with a table head (3), the outer wall of the initial probe rod (1) is fixedly connected with a flange plate (2), and the flange plate (2) is located above the float (4).

2. A magnetostrictive liquid level meter adjustable length probe according to claim 1, characterized in that: The pressing assembly comprises a connecting rod (11) arranged in the lower inside of the initial probe rod (1) and the connecting probe rod (5), and the top of the connecting rod (11) is connected in the inside of the initial probe rod (1) and the connecting probe rod (5) through a contraction spring (10).

3. A magnetostrictive liquid level meter adjustable length probe according to claim 2, characterized in that: The top of the pressing plate (7) is provided with a sealing ring (12), and the connecting rod (11) penetrates the inside of the sealing ring (12).

4. The adjustable length probe of a magnetostrictive liquid level meter according to claim 1, wherein: The assembling assembly comprises a connecting groove arranged in the lower side of the initial probe rod (1) and the connecting probe rod (5), the top of the connecting probe rod (5) and the bottom plate (6) is fixedly connected with a connecting piece (9), and the outer wall of the connecting piece (9) is screw-connected with the inner wall of the connecting groove.

5. A magnetostrictive liquid level meter adjustable length probe according to claim 4, characterized in that: The inside of the pressing plate (7) is a hollow structure, and the connecting piece (9) is arranged in the inside of the pressing plate (7).

6. A magnetostrictive liquid level meter adjustable length probe according to claim 4, characterized in that: The top of the connecting piece (9) is provided with a guide plate (8), and the bottom of the guide plate (8) is connected in the inside of the connecting piece (9) through a tight spring (13).

7. A magnetostrictive liquid level meter adjustable length probe according to claim 6, characterized in that: The guide plate (8) is arranged in the inside of the connecting groove.

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