A magnetic reed liquid level meter checking and resetting tool

Abstract

The application relates to the field of magnetic flap liquid level meter maintenance equipment, in particular to a magnetic flap liquid level meter checking and resetting tool, which comprises a first magnetic force mechanism, a magnetic head shell assembly and a first magnetic block assembly arranged in the magnetic head shell; a second magnetic force mechanism, a magnetic rod shell assembly inserted into the magnetic head shell and a second magnetic block assembly arranged in the magnetic rod shell assembly. Through cooperation of the first magnetic force mechanism and the second magnetic force mechanism, the magnetic flap liquid level meter checking and resetting process can be simplified, and the magnetic force in the resetting process can be controlled.

Description

Technical Field

[0001] This invention relates to the field of magnetic level gauge maintenance equipment, and in particular to a magnetic level gauge calibration and reset tool. Background Technology

[0002] Magnetic float level gauges are a commonly used oil level measuring element. They indirectly measure the liquid level of the object being measured by changing the position of the float inside the float tube through changes in liquid level. They are widely used in the industrial field.

[0003] During the maintenance of magnetic level gauges, maintenance personnel frequently encounter the following problems:

[0004] (1) There is a lack of tools for calibrating magnetic float level gauges. In actual operation, calibrating magnetic float level gauges is too cumbersome.

[0005] (2) In actual operation, due to the combined effects of the on-site environment and the abnormal state of the measured object, the magnetic float level gauge often has problems such as abnormal magnetic float display, malfunction or failure of magnetic switch, and abnormal measurement value of level transmitter. Due to the lack of magnetic float level gauge reset tools, maintenance personnel have difficulty in effectively handling the above defects, and there is often a risk of inadequate fault handling or maintenance personnel accidentally operating other equipment.

[0006] (3) When using a single magnet to calibrate the level gauge of the magnetic float, the magnetic force is difficult to control and can only be roughly controlled by the distance between the magnet and the level gauge. Summary of the Invention

[0007] In view of the problems existing in the above or prior art, the present invention is proposed.

[0008] Therefore, the purpose of this invention is to provide a magnetic float level gauge calibration and reset tool, which can solve the problems of overly cumbersome calibration work and poor control of magnetic force in the existing magnetic float level gauge calibration and reset process.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a magnetic float level gauge calibration and reset tool, which includes a first magnetic mechanism, which includes a magnetic head housing assembly and a first magnetic block assembly disposed in the magnetic head housing; and a second magnetic mechanism, which includes a magnetic rod housing assembly inserted into the magnetic head housing and a second magnetic block assembly disposed in the magnetic rod housing assembly.

[0010] As a preferred embodiment of the magnetic level gauge calibration and reset tool of the present invention, the magnetic head housing assembly includes a magnetic head housing, which has a top protective cavity, a first magnetic block cavity communicating with the top protective cavity, and a mounting hole communicating with the end of the first magnetic block cavity. A chamfer is provided at the connection between the first magnetic block cavity and the mounting hole. A bolt hole is also provided on the side wall of the mounting hole.

[0011] As a preferred embodiment of the magnetic level gauge calibration and reset tool of the present invention, the first magnetic block assembly includes a top protective block inserted into the top protective cavity, a first magnetic block inserted into the first magnetic block cavity, and a bottom protective block inserted into the first magnetic block cavity and in contact with the end of the first magnetic block.

[0012] As a preferred embodiment of the magnetic float level gauge calibration and reset tool of the present invention, the magnetic rod housing assembly includes a magnetic rod housing and a limiting ring fixed to the outside of the magnetic rod housing.

[0013] As a preferred embodiment of the magnetic float level gauge calibration and reset tool of the present invention, the magnetic rod shell has a second magnetic block cavity, and a sliding groove and a socket located on the side wall of the second magnetic block cavity and connecting the second magnetic block cavity and the outside of the magnetic rod shell, wherein the sliding groove and the socket are located on both sides of the limiting ring.

[0014] As a preferred embodiment of the magnetic level gauge calibration and reset tool of the present invention, the second magnetic block assembly includes a locking member disposed in the second magnetic block cavity, a second magnetic block inserted into the locking member, and an elastic member disposed in the slide groove and the second magnetic block cavity.

[0015] As a preferred embodiment of the magnetic level gauge calibration and reset tool of the present invention, the locking component includes locking plates symmetrically hinged to the bottom end of the second magnetic block cavity. The maximum vertical distance between the two locking plates facing the bottom of the second magnetic block cavity is narrower than the maximum vertical distance facing the opening of the second magnetic block cavity. The distance at the hinge point of the two locking plates is less than the diameter of the second magnetic block. The side wall of the locking plate blocks the insertion hole.

[0016] As a preferred embodiment of the magnetic level gauge calibration and reset tool of the present invention, the elastic element includes a fixing block fixed at one end of the slide groove away from the bottom of the second magnetic block cavity, a pressure block slidably disposed in the slide groove, and a compression spring fixed at both ends to the fixing block and the pressure block respectively; the inner diameter of the compression spring is larger than the diameter of the second magnetic block.

[0017] As a preferred embodiment of the magnetic level gauge calibration and reset tool of the present invention, the pressure block has a pressure surface on its edge that is far from the second magnetic block cavity and close to the pressure spring.

[0018] As a preferred embodiment of the magnetic float level gauge calibration and reset tool of the present invention, wherein: the pressing surface extends out of the slide groove under the elastic force of the compression spring when the magnetic rod housing assembly is not inserted into the magnetic head housing assembly.

[0019] The beneficial effects of this invention are as follows: The magnetic float level gauge calibration and reset tool of this invention, through the cooperation of the first magnetic mechanism and the second magnetic mechanism, can not only simplify the calibration and reset process of the magnetic float level gauge, but also control the magnitude of the magnetic force during the reset process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 A schematic diagram of the overall structure of the magnetic float level gauge calibration and reset tool;

[0022] Figure 2 This is a cross-sectional view of the first magnetic mechanism;

[0023] Figure 3 This is a cross-sectional view of the head housing assembly;

[0024] Figure 4 This is a cross-sectional view of the second magnetic mechanism;

[0025] Figure 5 This is a cross-sectional view of the magnetic rod housing assembly;

[0026] Figure 6 This is a schematic diagram of the elastic element. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0030] Reference Figures 1-5This is the first embodiment of the present invention. This embodiment provides a magnetic float level gauge calibration and reset tool, specifically including a first magnetic mechanism 100, which includes a magnetic head housing assembly 101 and a first magnetic block assembly 102 disposed in the magnetic head housing assembly 101; and a second magnetic mechanism 200, which includes a magnetic rod housing assembly 201 inserted into the magnetic head housing assembly 101 and a second magnetic block assembly 202 disposed in the magnetic rod housing assembly 201.

[0031] Furthermore, the head housing assembly 101 includes a head housing 101a, in which a top protective cavity W-1 is formed, a first magnetic block cavity W-2 communicating with the top protective cavity W-1, and a mounting hole W-3 communicating with the end of the first magnetic block cavity W-2. A chamfer 101a-1 is formed at the connection between the first magnetic block cavity W-2 and the mounting hole W-3. A bolt hole W-4 is also formed on the side wall of the mounting hole W-3. The diameter of the top protective cavity W-1 is smaller than the diameter of the first magnetic block cavity W-2, and the diameter of the first magnetic block cavity W-2 is smaller than the diameter of the mounting hole W-3.

[0032] It should be noted that a bolt is threaded into bolt hole W-4, and the friction between the bolt and bolt hole W-4 is relatively large, which allows the operator to maintain the relative position between the bolt and bolt hole W-4 without rotating the bolt.

[0033] Furthermore, the first magnetic block assembly 102 includes a top protective block 102a inserted into the top protective cavity W-1, a first magnetic block 102b inserted into the first magnetic block cavity W-2, and a bottom protective block 102c inserted into the first magnetic block cavity W-2 and in contact with the end of the first magnetic block 102b.

[0034] It should be noted that the top protective block 102a and the bottom protective block 102c are made of rubber and are used to protect the first magnetic block 102b located in the first magnetic block cavity W-2.

[0035] Preferably, the magnetic rod housing assembly 201 includes a magnetic rod housing 201a and a limiting ring 201b fixed to the outside of the magnetic rod housing 201a.

[0036] In this embodiment, the first magnetic mechanism 100 and the second magnetic mechanism 200 can be easily disassembled and assembled; the operator can change the relative distance between the first magnetic block assembly 102 and the second magnetic block assembly 202 by cooperating with the magnetic rod housing assembly 201, the second magnetic block assembly 202 and the magnetic head housing assembly 101, thereby changing the magnitude of the magnetic force that the end of the first magnetic block assembly 102 can provide. Example 2

[0037] Reference Figures 1-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0038] Specifically, the magnetic rod housing 201a has a second magnetic block cavity W-5, and a sliding groove W-6 and an insertion hole W-7 located on the side wall of the second magnetic block cavity W-5 and connecting the second magnetic block cavity W-5 and the outside of the magnetic rod housing 201a. The sliding groove W-6 and the insertion hole W-7 are located on both sides of the limiting ring 201b.

[0039] Furthermore, the second magnetic block assembly 202 includes a locking member 202a disposed in the second magnetic block cavity W-5, a second magnetic block 202b inserted into the locking member 202a, and an elastic member 202c disposed in the slide groove W-6 and the second magnetic block cavity W-5.

[0040] It should be noted that the magnetic poles of the second magnetic block 202b and the first magnetic block 102b are opposite at the ends that are close to each other. Therefore, the second magnetic block 202b and the first magnetic block 102b attract each other and tend to move closer to each other.

[0041] Furthermore, the locking component 202a includes locking plates 202a-1 symmetrically hinged to the bottom end of the second magnetic block cavity W-5. The maximum vertical distance between the two locking plates 202a-1 facing the bottom end of the second magnetic block cavity W-5 is narrower than the maximum vertical distance facing the opening end of the second magnetic block cavity W-5. The distance at the hinge point of the two locking plates 202a-1 is less than the minimum diameter of the second magnetic block 202b. The side wall of the locking plate 202a-1 blocks the insertion hole W-7.

[0042] It should be noted that the second magnetic block 202b can be cylindrical or frustum-shaped, as long as the distance between the hinges of the two locking plates 202a-1 is less than the minimum diameter of the second magnetic block 202b. After the axes of the insertion hole W-7 and the bolt hole W-4 are aligned, when the operator rotates the feed bolt in the bolt hole W-4, the bolt will be inserted into the insertion hole W-7 and press against the locking plate 202a-1. The locking plate 202a-1 will press and push the second magnetic block 202b, causing the second magnetic block 202b to slide towards the opening of the second magnetic block cavity W-5.

[0043] Furthermore, the elastic element 202c includes a fixing block 202c-1 fixed to one end of the slide groove W-6 away from the bottom of the second magnetic block cavity W-5, a pressure block 202c-2 slidably disposed in the slide groove W-6, and a compression spring 202c-3 fixed at both ends to the fixing block 202c-1 and the pressure block 202c-2 respectively; the inner diameter of the compression spring 202c-3 is larger than the diameter of the second magnetic block 202b.

[0044] It should be noted that, since the inner diameter of the compression spring 202c-3 is larger than the diameter of the second magnetic block 202b, the second magnetic block 202b can be removed from the second magnetic block cavity W-5 for replacement when the pressure block 202c-2 is not compressed.

[0045] Preferably, the pressure block 202c-2 has a pressing surface W-8 on its edge that is far from the second magnetic block cavity W-5 and close to the pressing spring 202c-3; the pressing surface W-8 extends out of the slide groove W-6 under the elastic force of the pressing spring 202c-3 when the magnetic rod housing assembly 201 is not inserted into the magnetic head housing assembly 101.

[0046] In this embodiment, before the operator needs to use the magnetic level gauge calibration and reset tool, the first magnetic mechanism 100 and the second magnetic mechanism 200 need to be assembled. During assembly, the limiting ring 201b needs to be inserted into the mounting hole W-3, and the axis of the insertion hole W-7 should be aligned with the bolt hole W-4. Then, the bolt should be rotated so that the end of the bolt enters the insertion hole W-7, which can limit the relative position between the magnetic head housing assembly 101 and the magnetic rod housing assembly 201, thus completing the assembly. When using the magnetic level gauge calibration and reset tool, the operator needs to bring the end of the first magnetic block 102b near the top protective block 102a close to the magnetic level gauge and slide it up and down to complete the reset of the magnetic level gauge.

[0047] It should be noted that during the process of inserting the limiting ring 201b into the mounting hole W-3, the part of the magnetic rod shell 201a with the groove W-6 will also be inserted into the first magnetic block cavity W-2 at the same time. During this process, the pressing surface W-8 will be squeezed by the chamfer 101a-1, so that the pressing block 202c-2 is completely squeezed into the groove W-6. This will also cause the compression spring 202c-3 fixed on the pressing block 202c-2 to be squeezed from a circular shape to an elliptical shape. After this, the pressing block 202c-2 can slide within the groove W-6. Since the minor axis length of the elliptical compression spring 202c-3 is smaller than the diameter of the second magnetic block 202b, the compression spring 202c-3 can limit and provide elastic force to the second magnetic block 202b.

[0048] It should also be noted that when the magnetic force provided by the end of the first magnetic block 102b near the top protective block 102a is insufficient, the operator needs to tighten the feed bolt so that the bolt is inserted into the insertion hole W-7 and presses the locking plate 202a-1. The locking plate 202a-1 will press and push the second magnetic block 202b, causing the second magnetic block 202b to slide towards the opening of the second magnetic block cavity W-5. This will bring the second magnetic block 202b closer to the first magnetic block 102b, thereby strengthening the magnetic field of the first magnetic block 102b by the second magnetic block 202b, providing a greater magnetic force. Magnetic force; when the magnetic force provided by the first magnetic block 102b near the top protective block 102a is too strong, the strong magnetic force may cause the magnetic block in the magnetic level gauge to scratch the magnetic level gauge. Therefore, it is necessary to reduce the magnetic force. At this time, the bolt needs to be loosened so that the bolt moves away from the locking plate 202a-1. At this time, the second magnetic block 202b will be pushed away from the first magnetic block 102b by the elastic force of the compression spring 202c-3 on the pressure block 202c-2, so that the magnetic force provided by the first magnetic block 102b near the top protective block 102a is reduced.

[0049] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A calibration and reset tool for a magnetic float level gauge, characterized in that: include, The first magnetic mechanism (100) includes a head housing assembly (101) and a first magnetic block assembly (102) disposed in the head housing assembly (101). The second magnetic mechanism (200) includes a magnetic rod housing assembly (201) inserted into the magnetic head housing assembly (101) and a second magnetic block assembly (202) disposed in the magnetic rod housing assembly (201). The magnetic head housing assembly (101) includes a magnetic head housing (101a), in which a top protective cavity (W-1) is formed, a first magnetic block cavity (W-2) communicating with the top protective cavity (W-1) is formed, and a mounting hole (W-3) communicating with the end of the first magnetic block cavity (W-2) is formed. A chamfer (101a-1) is formed at the connection between the first magnetic block cavity (W-2) and the mounting hole (W-3). Bolt holes (W-4) are also provided on the side wall of the mounting hole (W-3). A feed bolt is threaded into the bolt hole (W-4); The first magnetic block assembly (102) includes a top protective block (102a) inserted into the top protective cavity (W-1), a first magnetic block (102b) inserted into the first magnetic block cavity (W-2), and a bottom protective block (102c) inserted into the first magnetic block cavity (W-2) and in contact with the end of the first magnetic block (102b). The magnetic rod housing assembly (201) includes a magnetic rod housing (201a) and a limiting ring (201b) fixed to the outside of the magnetic rod housing (201a). The magnetic rod housing (201a) has a second magnetic block cavity (W-5) and a sliding groove (W-6) and a socket (W-7) located on the side wall of the second magnetic block cavity (W-5) and connecting the second magnetic block cavity (W-5) and the outside of the magnetic rod housing (201a). The sliding groove (W-6) and the socket (W-7) are located on both sides of the limiting ring (201b). The second magnetic block assembly (202) includes a locking member (202a) disposed in the second magnetic block cavity (W-5), a second magnetic block (202b) inserted into the locking member (202a), and an elastic member (202c) disposed in the slide groove (W-6) and the second magnetic block cavity (W-5). The locking component (202a) includes locking plates (202a-1) symmetrically hinged to the bottom end of the second magnetic block cavity (W-5). The maximum vertical distance between the two locking plates (202a-1) facing the bottom of the second magnetic block cavity (W-5) is narrower than the maximum vertical distance facing the opening of the second magnetic block cavity (W-5). The distance between the hinges of the two positioning plates (202a-1) is less than the diameter of the second magnet (202b), and the side wall of the positioning plate (202a-1) blocks the insertion hole (W-7). The magnetic poles of the second magnetic block (202b) and the first magnetic block (102b) are opposite at the ends that are close to each other. Therefore, the second magnetic block (202b) and the first magnetic block (102b) attract each other and tend to move closer to each other.

2. The magnetic float level gauge calibration and reset tool according to claim 1, characterized in that: The elastic element (202c) includes a fixing block (202c-1) fixed at one end of the slide groove (W-6) away from the bottom of the second magnetic block cavity (W-5), a pressure block (202c-2) slidably disposed in the slide groove (W-6), and a compression spring (202c-3) with its two ends fixed on the fixing block (202c-1) and the pressure block (202c-2) respectively. The inner diameter of the compression spring (202c-3) is larger than the diameter of the second magnet (202b).

3. The magnetic float level gauge calibration and reset tool according to claim 2, characterized in that: The pressure block (202c-2) has a pressure surface (W-8) on its edge that is far from the second magnetic block cavity (W-5) and close to the compression spring (202c-3).

4. The magnetic float level gauge calibration and reset tool according to claim 3, characterized in that: The pressing surface (W-8) extends outside the slide groove (W-6) under the elastic force of the compression spring (202c-3) when the magnetic rod housing assembly (201) is not inserted into the magnetic head housing assembly (101).

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