Detachable magnesium alloy sacrificial anode

Abstract

The utility model discloses a detachable magnesium alloy sacrificial anode which comprises an installation seat, installation blocks are arranged at the two ends of the installation seat, and a contraction device used for enabling the two installation blocks to move in the opposite direction or the reverse direction is arranged in the installation seat. The retracting device comprises a rotating shaft and a push block, a torsional spring is arranged between the rotating shaft and the mounting base, moving rods are arranged on the two sides of the push block, and reset springs in a compressed state are arranged between the moving rods and the mounting base. The oval push block and the rolling wheel are matched to form a cam-like mechanism, when the rotary shaft is driven by the rotary knob, the push block rotates to enable the rolling wheel to move along the oval outline, rotary motion is converted into linear motion of the movable rod, the two installation blocks can rapidly and reversely move to reserve installation positions, and the sacrificial anode block can be installed after the rotary knob is loosened. And the installation time is greatly reduced, so that the loss of a protected part is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of sacrificial anode installation technology, and particularly relates to a detachable magnesium alloy sacrificial anode. Background Technology

[0002] Based on the principle of a galvanic cell, when a magnesium alloy sacrificial anode comes into contact with the protected metal (such as steel) in an electrolyte environment (such as water or soil), the magnesium alloy, acting as the anode, undergoes an oxidation reaction, loses electrons, and is preferentially corroded, while the protected metal acts as the cathode.

[0003] Traditional sacrificial anodes use welding or bolts to fix the leads, which takes time to replace and can cause damage to the protected area during this process, necessitating improvements. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0005] A detachable magnesium alloy sacrificial anode includes: a mounting base, with mounting blocks at both ends of the mounting base, lead plates for connecting to external circuits on the surface of the mounting blocks, and a retraction device inside the mounting base for moving the two mounting blocks toward each other or in opposite directions;

[0006] The retraction device includes a rotating shaft and a push block. A torsion spring is provided between the rotating shaft and the mounting base. Movable rods are provided on both sides of the push block. The ends of the movable rods are connected to the corresponding mounting blocks. A return spring in a compressed state is provided between the movable rods and the mounting base.

[0007] As a preferred embodiment of the above technical solution, the mounting block contains several movable supplementary blocks, the supplementary blocks being made of the same material as the lead wire sheet, and an auxiliary spring in a compressed state being fixedly connected between the supplementary blocks and the mounting block.

[0008] As a preferred embodiment of the above technical solution, one end of the rotating shaft extends through the mounting base to the outside, and a knob is provided at the end of the rotating shaft.

[0009] As a preferred embodiment of the above technical solution, the push block has an elliptical cross-section, and the end of the moving rod is provided with a roller whose surface rolls in contact with the push block.

[0010] As a preferred embodiment of the above technical solution, bolts are threaded into both ends of the mounting base, and the ends of the bolts contact the surface of the moving rod to fix it by friction.

[0011] The beneficial effects of this utility model are as follows:

[0012] The elliptical pusher and the roller form a cam-like mechanism. When the rotary shaft is driven by the knob, the pusher rotates, causing the roller to move along the elliptical contour. This converts the rotational motion into the linear motion of the moving rod, allowing the two mounting blocks to move quickly in opposite directions to reserve the installation position. After releasing the knob, the sacrificial anode block can be installed, significantly reducing installation time and thus effectively reducing the loss at the protected area. Attached Figure Description

[0013] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment;

[0014] Figure 2 The view shown is a front sectional view of an embodiment;

[0015] Figure 3 The diagram shown is an internal structural diagram of the mounting base in the embodiment.

[0016] In the diagram: 10, mounting base; 20, mounting block; 30, lead wire piece; 40, retraction device; 41, rotating shaft; 42, knob; 43, push block; 44, moving rod; 45, return spring; 46, roller; 51, supplementary block; 52, auxiliary spring; 60, bolt; 70, sacrificial anode block. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present utility model embodiments clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings.

[0018] Figures 1-3 In the present invention, a detachable magnesium alloy sacrificial anode includes: a mounting base 10, wherein mounting blocks 20 are provided at both ends of the mounting base 10, and lead plates 30 for connecting to external circuits are provided on the surface of the mounting blocks 20. A retraction device 40 for moving the two mounting blocks 20 toward each other or in opposite directions is provided inside the mounting base 10.

[0019] The retraction device 40 includes a rotating shaft 41 and a push block 43. A torsion spring is provided between the rotating shaft 41 and the mounting base 10. A moving rod 44 is provided on both sides of the push block 43. The end of the moving rod 44 is connected to the corresponding mounting block 20. A return spring 45 in a compressed state is provided between the moving rod 44 and the mounting base 10.

[0020] The push block 43 has an elliptical cross-section, and the end of the moving rod 44 is provided with a roller 46 whose surface rolls and fits against the push block 43.

[0021] One end of the rotating shaft 41 extends through the mounting base 10 to the outside, and a knob 42 is provided at the end of the rotating shaft 41.

[0022] The elliptical pusher 43 and the roller 46 cooperate to form a cam-like mechanism. When the rotary shaft 41 is driven by the knob 42, the pusher 43 rotates, causing the roller 46 to move along the elliptical contour, converting the rotational motion into the linear motion of the moving rod 44. This allows the two mounting blocks 20 to move in opposite directions quickly to reserve the mounting position. After releasing the knob 42, the sacrificial anode block 70 can be installed, greatly reducing the installation time and thus effectively reducing the loss of the protected area.

[0023] Figures 2-3 In the mounting block 20, there are several movable supplementary blocks 51 inside. The supplementary blocks 51 are made of the same material as the lead wire sheet 30. An auxiliary spring 52 in a compressed state is fixedly connected between the supplementary blocks 51 and the mounting block 20.

[0024] By setting a retractable supplementary block 51 inside the mounting block 20 and using an auxiliary spring 52 to provide elastic support, when the end of the sacrificial anode block 70 is corroded and consumed, the supplementary block 51 automatically extends to fill the gap and maintain continuous contact with the anode surface, thus achieving dynamic contact compensation and adapting to the anode loss process without manual intervention.

[0025] Figure 1 In the middle, both ends of the mounting base 10 are threaded with bolts 60, and the ends of the bolts 60 contact the surface of the moving rod 44 to rub and fix it.

[0026] The bolt 60 is inserted so that the moving rod 44 is frictionally fixed, reducing the impact on the return spring 45 and avoiding the impact of wear and tear over long-term use on the "clamping" fixation of the sacrificial anode block 70.

[0027] Working principle: When the sacrificial anode block 70 needs to be replaced, rotating the two bolts 60 disengages the friction fixing of the moving rod 44. Then, the knob 42 drives the rotating shaft 41 and the push block 43 to rotate, and the torsion spring is twisted and deformed accordingly. Because the cross-section of the push block 43 is elliptical, the roller 46 moves on the surface of the push block 43 and pushes the moving rod 44. The two moving rods 44 then drive the two mounting blocks 20 to move in opposite directions, and the return spring 45 continues to be compressed and deformed. At this time, the auxiliary spring 52, which is in a compressed state, resets the supplementary block 51. After the new sacrificial anode block 70 is replaced, Releasing knob 42 and restoring spring 45 automatically drives moving rod 44 to reset, causing lead sheet 30 on mounting block 20 to adhere to the surface of sacrificial anode block 70. During this process, supplementary block 51, which is adhered to the surface of sacrificial anode block 70, is squeezed back into mounting block 20, and the end of supplementary block 51 is flush with the surface of lead sheet 30. Auxiliary spring 52 is further compressed and deformed. Then, bolt 60 is inserted to make moving rod 44 frictionally fixed, reducing the impact on restoring spring 45. When the end of sacrificial anode block 70 is consumed, supplementary block 51 at the corresponding position extends to maintain contact with sacrificial anode block 70.

[0028] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A detachable magnesium alloy sacrificial anode, characterized in that, include: Mounting base (10), with mounting blocks (20) at both ends of the mounting base (10), and lead wires (30) for connecting to external lines on the surface of the mounting blocks (20), and a retraction device (40) for moving the two mounting blocks (20) towards each other or in opposite directions inside the mounting base (10). The retraction device (40) includes a rotating shaft (41) and a push block (43). A torsion spring is provided between the rotating shaft (41) and the mounting base (10). A moving rod (44) is provided on both sides of the push block (43). The end of the moving rod (44) is connected to the corresponding mounting block (20). A return spring (45) in a compressed state is provided between the moving rod (44) and the mounting base (10).

2. The detachable magnesium alloy sacrificial anode according to claim 1, characterized in that, The mounting block (20) contains several movable supplementary blocks (51). The supplementary blocks (51) are made of the same material as the lead wire (30). An auxiliary spring (52) in a compressed state is fixedly connected between the supplementary blocks (51) and the mounting block (20).

3. The detachable magnesium alloy sacrificial anode according to claim 1, characterized in that, One end of the rotating shaft (41) extends through the mounting base (10) to the outside, and a knob (42) is provided at the end of the rotating shaft (41).

4. The detachable magnesium alloy sacrificial anode according to claim 1, characterized in that, The push block (43) has an elliptical cross section, and the end of the moving rod (44) is provided with a roller (46) whose surface rolls and fits against the push block (43).

5. The detachable magnesium alloy sacrificial anode according to claim 1, characterized in that, Both ends of the mounting base (10) are threaded with bolts (60), and the ends of the bolts (60) contact the surface of the moving rod (44) to fix it by friction.

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