Adjustable tin drop electromagnetic micro-jet controllable magnetic device

Abstract

The invention provides an adjustable tin drop electromagnetic micro-jet controllable magnetic device, and relates to the technical field of electromagnetic valves. Comprising an electromagnetic micro-spraying valve connected with alternating current and further comprises an adjusting assembly and two magnetic conduction assemblies which are connected to the adjusting assembly and located on the two opposite sides of the electromagnetic micro-spraying valve. The adjusting assembly is suitable for driving the two magnetic conductive assemblies to be synchronously close to or away from the electromagnetic micro-spraying valve so as to control the magnetic field intensity acting on the electromagnetic micro-spraying valve. By means of the scheme, control over the magnetic field intensity can be achieved, and higher magnetic field intensity can be obtained.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic valves, and in particular to an adjustable tin drop electromagnetic micro-spray controllable magnetic device. Background Art

[0002] The principle of the existing tin drop solenoid valve is that the free electrons inside the energized metal liquid move in a directional manner under the drive of the electric field. When it is placed in the magnetic field, the free electrons will move due to the Lorentz force, and the free electrons cannot escape from the metal liquid, so they can only continuously hit one end of the metal liquid to drive the metal liquid to flow in this direction, forming a Lorentz force field. The force exerted on the metal droplet is directly related to the strength of the magnetic field. A magnetic field that is too weak is difficult to obtain a sufficiently large force. The traditional solution is to place multiple neodymium magnets on the two end faces of the tin drop solenoid valve in an overlapping manner. This measure not only requires the use of large-volume neodymium magnets, which is expensive, but also highly dangerous. During the installation process, the magnets are easily attracted and collided to cause safety accidents, and are also difficult to remove. In addition, the magnet is directly adsorbed on the electromagnetic micro-spray valve, and the strength of the magnetic field acting on the electromagnetic micro-spray valve is a fixed value, which cannot be adjusted and is difficult to adapt to specific needs. In addition, the high temperature of the electromagnetic micro-spray valve is also easy to destroy the magnetism of the neodymium magnet, causing irreversible damage. Summary of the invention

[0003] The invention discloses an adjustable tin drop electromagnetic micro-spray controllable magnetic device with simple structure and convenient operation, aiming to improve the above-mentioned problems.

[0004] The present invention adopts the following scheme:

[0005] An adjustable tin drop electromagnetic micro-spray controllable magnetic device includes an electromagnetic micro-spray valve connected to an alternating current, and also includes: an adjustment component and two magnetic conductive components connected to the adjustment component and located on opposite sides of the electromagnetic micro-spray valve, wherein the adjustment component is suitable for driving the two magnetic conductive components to synchronously approach or move away from the electromagnetic micro-spray valve to control the magnetic field strength acting on the electromagnetic micro-spray valve.

[0006] Furthermore, the magnetic conductive component includes at least one fixed shell and a plurality of neodymium magnets arranged in the fixed shell, and the magnetization direction is from the S pole to the N pole. The plurality of neodymium magnets are arranged from top to bottom, and the magnetization direction changes counterclockwise, so that one of the electromagnetic micro-spray valves has strong magnetism and the other side has weak magnetism.

[0007] Furthermore, each group of the magnetic conductive components has four neodymium magnets, and the magnetization directions from top to bottom are rightward, upward, leftward, and downward.

[0008] Furthermore, a plurality of groups of the magnetic conductive components arranged in parallel are provided on both sides of the electromagnetic micro-spray valve.

[0009] Furthermore, the number of neodymium magnets in each group of the magnetic conductive components is a multiple of 4.

[0010] Furthermore, the adjustment component includes a mounting frame, a worm, a guide rod and a transmission block; wherein the guide rod and the worm are arranged on the mounting frame, and the worm is suitable for connecting a driving device; left-handed threads and right-handed threads are respectively arranged on the left and right sides of the rod body of the worm, and a transmission block is respectively arranged on the left-handed threads and the right-handed threads to respectively connect the two magnetic conductive components, and the two magnetic conductive components are driven to synchronously approach or move away from the electromagnetic micro-spray valve by rotating the worm.

[0011] Furthermore, the period T of the alternating current connecting the electromagnetic micro-spray valve is: Among them, x represents the length of a neodymium magnet, B represents the magnetic field strength, v represents the movement speed of the tin droplet, E represents the electric field strength, and σ represents the conductivity.

[0012] Furthermore, the fixing shell is made of glass fiber, and slots for installing four neodymium magnets are arranged in the fixing shell for directional installation of the neodymium magnets.

[0013] Beneficial effects:

[0014] This device uses the Halbach Array to achieve a stronger magnetic field strength by aligning and aligning multiple small neodymium magnets. In addition, the distance between the magnets is controlled by worm gear transmission to control the magnetic field strength. In addition, the fixed shell made of heat-insulating magnetic conductive material can also protect the magnet from failure due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to an embodiment of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the fixed shell and the neodymium magnet of an adjustable tin drop electromagnetic micro-spray controllable magnetic device according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the magnetization direction distribution of an adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to an embodiment of the present invention;

[0018] Figure 4 It is a schematic diagram of magnetic field distribution of a magnetic conductive component of an adjustable tin droplet electromagnetic micro-spray controllable magnetic force device according to an embodiment of the present invention;

[0019] Icon: electromagnetic micro-spray valve 1, adjustment component 2, mounting bracket 21, worm 22, guide rod 23, transmission block 24, magnetic conductive component 3, fixing shell 31, neodymium magnet 32. DETAILED DESCRIPTION

[0020] Combination Figures 1 to 4 As shown, this embodiment provides an adjustable tin droplet electromagnetic micro-spray controllable magnetic device, including an electromagnetic micro-spray valve 1 connected to an alternating current, and also includes: an adjustment component 2 and two magnetic conductive components 3 connected to the adjustment component 2 and located on opposite sides of the electromagnetic micro-spray valve 1, the adjustment component 2 is suitable for driving the two magnetic conductive components 3 to synchronously approach or move away from the electromagnetic micro-spray valve 1 to control the magnetic field strength acting on the electromagnetic micro-spray valve 1.

[0021] In this embodiment, the electromagnetic micro-spray valve 1 is used to spray molten tin during soldering operations. Electrodes are connected to both sides of the electromagnetic micro-spray valve 1 to connect alternating current to the electromagnetic micro-spray valve 1. Since the free electrons inside the energized metal liquid move in a directional manner under the drive of the electric field, when it is placed in a magnetic field, the free electrons will move due to the Lorentz force, and the free electrons cannot escape from the metal liquid, so they can only continuously collide with one end of the metal liquid to drive the metal liquid to flow in this direction, forming a Lorentz force field. Based on this principle, a pulse current can be passed through two electrodes in a magnetic field environment to pass through the liquid metal, so that the liquid metal obtains a pulsed Lorentz force toward the outside of the nozzle, and the metal liquid obtains instantaneous kinetic energy, forcing the liquid metal to be ejected from the tiny nozzle to obtain tiny metal droplets.

[0022] Combination Figures 1 to 4As shown, in this embodiment, by arranging the magnetic conductive components 3 with adjustable distance on both sides of the electromagnetic micro-spray valve 1, on the one hand, the required magnetic field strength can be adjusted, and on the other hand, the strength of the single-side magnetic conductive component 3 on the electromagnetic micro-spray valve 1 can be improved, and the required neodymium magnet 32 ​​is relatively small in size. Specifically, the adjustment component 2 includes a mounting frame 21, a worm 22, a guide rod 23 and a transmission block 24; wherein the guide rod 23 and the worm 22 are arranged on the mounting frame 21, and the worm 22 is suitable for connecting a driving device; left-handed threads and right-handed threads are respectively arranged on the left and right sides of the rod body of the worm 22, and a transmission block 24 is respectively arranged on the left and right threads to connect the two magnetic conductive components 3, respectively, and the two magnetic conductive components 3 are driven to synchronously approach or move away from the electromagnetic micro-spray valve 1 by rotating the worm 22. When the worm 22 is driven to rotate by the driving device, the two magnetic conductive components 3 connected to the left-handed thread and the right-handed thread will synchronously approach the electromagnetic micro-spray valve 1 or synchronously move away from the electromagnetic micro-spray valve 1. When they are close to each other, the magnetic field strength is large and the speed of the tin liquid is fast. When they are away from each other, the magnetic field strength is small and the speed of the tin liquid is slow. The transmission block 24 is connected to the guide rod 23 so that when the worm 22 rotates, the transmission block 24 can only drive the magnetic conductive component 3 to move left and right along the length direction of the worm 22, but cannot rotate. The worm 22 transmission in this embodiment has a large transmission ratio, which can make the magnet spacing control more accurate and easy.

[0023] Combination Figure 3 to Figure 4 As shown, the magnetic conductive component 3 includes at least one fixed shell 31 and a plurality of neodymium magnets 32 arranged in the fixed shell 31, and the magnetization direction is from the S pole to the N pole. Then the plurality of neodymium magnets 32 are arranged from top to bottom, and the magnetization direction changes in a counterclockwise direction, so that one of the electromagnetic micro-spray valves 1 has strong magnetism and the other side has weak magnetism. Specifically, in this embodiment, the number of neodymium magnets 32 in each group of the magnetic conductive components 3 is four, and the magnetization directions are rightward, upward, leftward, and downward from top to bottom. The arrangement directions of the neodymium magnets 32 of the two groups of magnetic conductive components 3 on both sides of the electromagnetic micro-spray valve 1 are the same, so that the electromagnetic micro-spray valve 1 on one side is subjected to enhanced magnetic field strength. According to the arrangement, the original magnetic field strength can be increased to 1.414 times, and the magnetic field strength on the other side is greatly weakened. Only by setting strong magnetic surfaces and weak magnetic surfaces on both sides of the electromagnetic micro-spray valve 1 can the magnetic field strength in the tin droplet injection valve be maximized. The price of multiple small neodymium magnets 32 is cheaper than that of a single large neodymium magnet 32, and the magnetic field strength that can be finally achieved is about 1.414 times stronger than that of a single large neodymium magnet 32, which can effectively reduce costs.

[0024] Combination Figure 1 to Figure 2As shown, it should be noted that, in other embodiments, the magnetic conductive component 3 on each side is provided with a plurality of groups of the magnetic conductive components 3 arranged in parallel to accommodate electromagnetic micro-spray valves 1 of different widths. According to the length of the electromagnetic micro-spray valve 1, the number of neodymium magnets 32 in each group of the magnetic conductive components 3 can be increased to extend the length of the magnetic conductive component 3; specifically, the number of neodymium magnets 32 in each group of the magnetic conductive components 3 is a multiple of 4, and is periodically arranged from top to bottom in the order of rightward, upward, leftward, and downward.

[0025] In this embodiment, the fixed shell 31 of the magnetic conductive component 3 is made of glass fiber, which can play a heat insulating role and effectively protect the magnet from being damaged by the heat of the electromagnetic micro-spray valve 1; slots for installing four neodymium magnets 32 are provided in the fixed shell 31 for directional installation of the neodymium magnets 32 to prevent the neodymium magnets 32 from adsorbing themselves together, so that the directional array of the neodymium magnets 32 can be easily installed and is very stable.

[0026] Since the Lorentz force inside the metal liquid in the cavity of the electromagnetic micro-spray valve 1 is the driving force for the metal liquid micro-spray, the metal liquid in the cavity can be simplified as an incompressible electromagnetic fluid. At the same time, since the horizontal magnetic field components to the left or right do not affect the movement of the tin droplets, only the vertical upward or downward magnetic field components can affect the movement of the tin droplets. Therefore, the magnetic field direction of the strong magnetic surface of the array can be abstractly considered to change periodically as the distance to the right of the paper increases; therefore, the current direction of the alternating current also needs to change periodically to make the tin droplets move downward as a whole. According to the Ohm's equation for the flowing fluid and the Lorentz force equation, the Lorentz force on the metal liquid in the injection valve cavity can be obtained:

[0027] F L =σB(E+Bv),

[0028] Among them, F L represents the Lorentz force, σ represents the conductivity, E represents the electric field strength, v represents the movement speed of the tin droplet, and B represents the magnetic field strength;

[0029] Define the length of a neodymium magnet 32 ​​as x, and abstract the magnetic field strength of the strong magnetic surface in the plane, and we can get:

[0030]

[0031] Substitute F L The formula is:

[0032] When the width between the two magnetic conductive components 3 increases, since the magnetic field distribution between the two magnets still changes suddenly near the same horizontal line, the period of the alternating current connecting the electromagnetic micro-spray valve is still

[0033]

[0034] By controlling the cycle of the alternating current and the change of the magnetic field strength, the downward movement of the tin droplet can be controlled. This embodiment has a reasonable structure, which is not only simple to process, but also easy to disassemble and assemble; compared with the original technology, it can obtain a greater magnetic field strength when the budget is limited, and save space. In addition, the strength of the magnetic field in the electromagnetic micro-spray valve 1 can be controlled by changing the distance between the magnets, and the heat-insulating magnetic fixed shell 31 can also prevent the magnet from failing due to heat.

[0035] It should be understood that the above are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

[0036] The above description of the drawings used in the implementation manner only illustrates certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

Claims

1. An adjustable tin droplet electromagnetic micro-spray controllable magnetic device, comprising an electromagnetic micro-spray valve connected to an alternating current, characterized in that: Also includes: An adjusting component and two magnetic conductive components connected to the adjusting component and located on opposite sides of the electromagnetic micro-spray valve. The adjusting component is suitable for driving the two magnetic conductive components to synchronously approach or move away from the electromagnetic micro-spray valve to control the magnetic field strength acting on the electromagnetic micro-spray valve.

2. The adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to claim 1 is characterized in that: The magnetic conductive component includes at least one fixed shell and a plurality of neodymium magnets arranged in the fixed shell. The magnetization direction is from the S pole to the N pole. The plurality of neodymium magnets are arranged from top to bottom, and the magnetization direction changes counterclockwise, so that one of the electromagnetic micro-spray valves has strong magnetism and the other side has weak magnetism.

3. The adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to claim 2 is characterized in that: Each group of the magnetic conductive components has four neodymium magnets, and the magnetization directions from top to bottom are rightward, upward, leftward, and downward.

4. The adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to claim 3 is characterized in that: A plurality of groups of parallel-arranged magnetic conductive components are arranged on both sides of the electromagnetic micro-spray valve.

5. The adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to claim 4, characterized in that: The number of neodymium magnets in each group of the magnetic conductive components is a multiple of 4.

6. The adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to claim 1, characterized in that: The adjustment component includes a mounting frame, a worm, a guide rod and a transmission block; wherein the guide rod and the worm are arranged on the mounting frame, and the worm is suitable for connecting a driving device; left-handed threads and right-handed threads are respectively arranged on the left and right sides of the rod body of the worm, and a transmission block is respectively arranged on the left-handed threads and the right-handed threads to respectively connect the two magnetic conductive components, and the two magnetic conductive components are driven to synchronously approach or move away from the electromagnetic micro-spray valve by rotating the worm.

7. The adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to claim 3 is characterized in that: The period T of the alternating current connecting the electromagnetic micro-spray valve is: Among them, x represents the length of a neodymium magnet, B represents the magnetic field strength, v represents the movement speed of the tin droplet, E represents the electric field strength, and σ represents the conductivity.

8. The adjustable tin droplet electromagnetic micro-spray controllable magnetic device according to claim 3 is characterized in that: The fixing shell is made of glass fiber, and slots for installing four neodymium magnets are arranged in the fixing shell for directional installation of the neodymium magnets.

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