A device for identifying the magnetization direction and assisting the installation of the magnetized inner and outer magnetic rotors of a magnetic pump

Abstract

A device for identifying the magnetization direction and assisting the installation of the block magnets of the inner and outer magnetic rotors of a magnetic pump belongs to the field of mechanical design. A support device is provided in the middle of the device. A cavity with an upper opening is provided inside the support device. A support column is provided in the cavity. A "piston"-shaped center column is provided at the bottom of the support column. An internal magnetic block is provided in the "piston"-shaped center column. An upper end cover is provided on the upper part of the support column. Below the upper end cover is a shell with a downward opening. The cavity on both sides of the support device forms a magnet installation space for the inner and outer magnetic rotors of the magnetic pump. The shell is sleeved on the outside of the support device. The device can identify the magnetization direction of the block magnets of the inner and outer magnetic rotors of the magnetic pump and assist the installation. In particular, the device can facilitate and accurately identify the magnetization direction of the inner and outer magnetic rotors of the magnetic pump, which needs to install multiple block magnets and the magnetization direction of the block magnets cannot be intuitively determined. The block magnets can also be easily installed.

Description

Technical Field

[0001] The invention belongs to the field of mechanical design and relates to a device for identifying the magnetization directions of segmented magnets of inner and outer magnetic rotors of a magnetic pump and an auxiliary installation device. Background Art

[0002] Magnetic pumps have typical advantages such as complete sealing, no chemical leakage, no pollution, and long service life. They are especially suitable for industries and fields such as petroleum, chemical, pharmaceutical, and military industries that need to transport special media such as highly corrosive liquids. In recent years, with the continuous emergence of permanent magnetic materials such as ferrite, neodymium iron boron, and samarium cobalt, the driving efficiency and power density of magnetic pumps have been further improved.

[0003] In the process of manufacturing and processing magnetic pumps, it is a very important link to accurately and reliably install the inner and outer magnetic rotor block magnets on the inner and outer magnetic rotor base (or cylinder body). First of all, it is necessary to ensure that the magnetic pole orientation of each magnet installed and the polarity relationship between the two adjacent magnetic poles meet the requirements of the design plan. For example, some design plans require that the two adjacent magnetic poles are South Pole (hereinafter referred to as S)-North Pole (hereinafter referred to as N), some require S-S, some require N-N, and some require N-S. In addition, most magnet manufacturers do not have very obvious N and S indication marks on the outer surface of the magnets they produce for product standardization. Therefore, accurately identifying the magnetization direction of each magnet to be installed is the key to improving installation efficiency and ensuring the correctness of installation; secondly, when installing magnets, it is difficult to have a unified installation tool or auxiliary installation device to adapt to different installation occasions. Many operators directly identify the magnetism manually and install the magnets by hand, which is very likely to cause the following adverse consequences: ① Errors in magnetization direction identification and installation errors, which in turn cause the magnetic pump to fail to operate or operate abnormally; ② The magnet may injure the operator, because when the magnet is about to be embedded in the installation position of the inner and outer magnetic rotor base (or cylinder body), the huge attraction will instantly cause the magnet to adsorb to the inner and outer magnetic rotor base (or cylinder body), and in severe cases, it may directly injure the operator; ③ The magnet may be broken and damaged due to collision. Since the magnet has strong magnetism, it is very easy for the magnet to be directly adsorbed on the surface of a magnetic conductive component during the transfer process. The huge attraction will accelerate the adsorption of the magnet instantly, resulting in cracking, rupture and other problems, affecting the quality of the magnet, and then causing the magnetic pump to be unreliable during operation, reducing the overall efficiency of the magnetic pump, and in some occasions where the machine is not allowed to stop, a parking accident may also cause serious production accidents. Summary of the invention

[0004] The purpose of the present invention is to realize the identification of the magnetization direction and auxiliary installation of the block magnets of the inner and outer magnetic rotors of a magnetic pump, especially to provide a device that is convenient and accurate in identifying the magnetization direction of the inner and outer magnetic rotors of a magnetic pump that needs to install multiple block magnets and the magnetization direction of the block magnets cannot be intuitively determined, and convenient in installing the block magnets.

[0005] The technical solution provided by the present invention is:

[0006] A device for identifying the magnetization direction and assisting the installation of magnets in the inner and outer magnetic rotors of a magnetic pump, wherein a support device is provided in the middle of the device, a cavity with an upper opening is provided inside the support device, a support column is provided in the cavity, a "piston"-shaped central column is provided at the lower part of the support column, two internal magnetic blocks with no magnetic chain cross-linking or little magnetic chain cross-linking are provided in the "piston"-shaped central column, the "piston"-shaped central column is connected to the handle via the support column, an upper end cover is provided at the upper part of the support column, and a shell with a downward opening is provided below the upper end cover, cavities are provided on both sides of the support device, and magnet installation space for the inner and outer magnetic rotors of the magnetic pump is formed between the cavities on both sides of the support device and the shell, and the shell is sleeved on the outside of the support device; one side of the shell has a characteristic surface with obvious color markings, which is used to clearly indicate the operator's operating sequence when pre-installing and installing magnets; the magnetization directions of the two internal magnetic blocks are in the same direction and are both perpendicular to the central axis of the middle moving column.

[0007] Furthermore, a side of the shell is provided with a clear color identification surface.

[0008] Furthermore, the shell is a wing-shaped shell, and the two side surfaces are asymmetrical structures with equal widths and unequal lengths.

[0009] Furthermore, a lower supporting seat is provided at the bottom of the supporting device.

[0010] Furthermore, the "piston"-shaped central column performs "piston"-like motion along the cavity.

[0011] Furthermore, the magnetization directions of the two internal magnetic blocks are in the same direction and are perpendicular to the central axis of the middle moving column.

[0012] Furthermore, the overall material of the device is a non-magnetic material without high magnetic permeability and hysteresis characteristics, specifically non-magnetic stainless steel, copper, aluminum, and industrial plastic.

[0013] Compared with the prior art, the beneficial effects of the present invention are: providing a device for identifying the magnetization direction and assisting the installation of the inner and outer magnetic rotor block magnets of a magnetic pump, the device can accurately and efficiently identify the magnetization direction of magnets without obvious markings on the outer surface, guide the operator to accurately determine the installation order of the magnets, avoid the risk of degradation of permanent magnet quality, operator injury, and increased risk factors in the operation of magnetic pump products due to improper operation, and significantly improve the accuracy and efficiency of identifying the magnetization direction of the magnetic rotor block magnets and the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic cross-sectional structure diagram of a device for identifying the magnetization direction of the inner and outer magnetic rotor block magnets and for assisting the installation of the device in a magnetic pump according to the present invention;

[0015] Figure 2 A schematic diagram of the structure of a magnetic rotor body (without magnets installed) in a magnetic pump drawn for explaining the use of the present invention;

[0016] Figure 3 The present invention is applied to Figure 2 Schematic diagram of the implementation process.

[0017] In the figure: 1. handle, 2. upper end cover, 3. upper left shoulder support, 4. support column, 5. middle cavity, 6. "piston" shaped center column, 7. left cavity, 8. left side of the shell, 9. left direction-finding magnet, 10. lower left support, 11. lower right support, 12. right direction-finding magnet, 13. right side of the shell, 14. right directional marking coating, 15. right cavity, 16. upper right shoulder support, 17. a magnetic rotor body in a magnetic pump (magnets not installed), 18. magnet mounting slot one, 19. protrusions between magnet mounting slots, 20. magnet mounting slot two, 21. magnet one to be installed, 22. magnet two to be installed. DETAILED DESCRIPTION

[0018] Taking two adjacent magnet installation slots as N-S or S-N as an example, the present invention will be described in more detail below in conjunction with the accompanying drawings of the specification. Figure 1 The H direction is defined as the horizontal direction, and the V direction is the vertical direction. For easy distinction, the left side and the right side are defined as the two directions in the horizontal direction, and the top and the bottom are defined as the two directions in the vertical direction.

[0019] A device for identifying the magnetization direction of the internal and external magnetic rotors of a magnetic pump and assisting the installation of the magnetization direction of the magnets, the device has two magnet installation cavities in opposite positions, and the cavities can be pre-installed with two magnets to be installed on the internal and external magnetic rotors of the magnetic pump. One side of the device has a characteristic surface with obvious color markings, which is used to clearly indicate the operator's operation sequence when pre-installing and installing magnets. A cylindrical cavity is arranged in the middle of the device, and a middle moving column that can move "piston" along the cavity is arranged in the cavity. Two internal magnetic blocks (which can also be electromagnets) with no magnetic chain cross-linking or little magnetic chain cross-linking are arranged in the moving column. The internal magnetic blocks can be embedded inside, as long as the polarity of the electromagnet after power is ensured to be consistent with the polarity of the left-side direction-finding magnet 9 and the right-side direction-finding magnet 12 in the figure. The magnetization directions of the two internal magnetic blocks are in the same direction and are perpendicular to the central axis of the middle moving column. The moving column is connected to the handle through a support column, and a shell with a downward opening is arranged between the handle and the support column. The shell is a four-sided box structure, and its left and right sides are equal in width but not equal in length. By the attached Figure 3It can be seen that the restraining effect of the left and right side shells and the attractive effect of the magnets make the two magnets to be installed firmly placed in the cavity. When the center column is moved upward, the shell will move upward. Obviously, the shell on the right will first detach from the magnet to be installed on the right. At this time, the left-side direction-finding magnet 9 also detaches from the left-side magnet to be installed. The left side of the shell is longer, which effectively avoids the constraint of the left-side magnet to be installed detaching from the left side of the shell, so the left side of the shell is set longer.

[0020] The overall material of the device is non-magnetic material, such as non-magnetic stainless steel, copper, aluminum, industrial plastics and other high-strength and easy-to-process metals and non-metals, but they cannot have high magnetic permeability and hysteresis characteristics.

[0021] Attached Figure 3 -A, the magnet 1 21 to be installed and the magnet 2 22 to be installed are slowly pushed in perpendicular to the straight-face direction of the drawing and pre-installed in the left cavity 7 and the right cavity 15. In the process of pushing into the cavity, since the left magnetism of the left-side direction-finding magnet 9 is S, if the right magnetism of the magnet 1 21 to be installed is N, it can be pushed in smoothly, otherwise there will be a large repulsive force to remind the operator that the direction of the magnet 1 21 to be installed needs to be changed; similarly, the right magnetism of the right-side direction-finding magnet 12 is N, if the left magnetism of the magnet 2 22 to be installed is S, it can be pushed in smoothly, otherwise there will be a large repulsive force to remind the operator that the direction of the magnet 2 22 to be installed needs to be changed. Since a right-side directional marking coating 14 is provided on the outer side of the right side surface 13 of the outer shell, the coating will clearly indicate to the operator that the right-side magnetism of the magnet 2 22 to be installed pre-installed in the right cavity 15 is N, and the left-side magnetism of the magnet 1 21 to be installed pre-installed in the left cavity 7 is S. By following these steps, the magnetization directions of all magnets can be identified efficiently, intuitively and accurately.

[0022] Attached Figure 3 -B, the right side of the present invention (the side with the right directional marking coating 14) is brought close to a magnet mounting slot 18 of a magnetic rotor body 17 (without magnet installed) in a magnetic pump. If the rotor body itself is made of magnetic conductive material, there will be a certain attraction between the second magnet 22 to be installed preinstalled in the right cavity 15 and the rotor body. Since the second magnet 22 to be installed is subject to the attraction of the right directional magnet 12 and the constraint of the right side surface 13 of the outer shell, the second magnet 22 to be installed will be reliably preinstalled in the right cavity 15 and have a tendency to move toward the magnet mounting slot 18.

[0023] Attached Figure 3 -C, hold the handle 1 and pull out the "piston" shaped central column 6 upwards, the attraction of the right-side direction-finding magnet 12 to the second mounting magnet 22 and the constraint of the right side surface 13 of the shell will gradually weaken.

[0024] Attached Figure 3 -D, continue to pull out the "piston" shaped center column 6 upward, and the second magnet 22 to be installed will slowly contact the magnet installation groove 18. When the right-side direction-finding magnet 12 and the right side surface 13 of the shell are completely separated from the second magnet 22 to be installed, the second magnet 22 to be installed will slowly be installed inside the magnet installation groove 18. At this time, the "piston" shaped center column 6 is pushed back to its original position.

[0025] Attached Figure 3 -E. Attachment Figure 3 -F, the adjacent magnet mounting slot 20 close to the magnet mounting slot 18 on the left side (the side without the right directional marking coating 14) of the present invention, the pre-installed magnet 21 to be installed in the left cavity 7 will have a certain attraction with the rotor body. Since the magnet 21 to be installed is subject to the attraction of the left directional magnet 9 and the constraint of the left side surface 8 of the shell, the magnet 21 to be installed will be reliably pre-installed in the left cavity 7 and have a tendency to move toward the magnet mounting slot 20.

[0026] Attached Figure 3 -G, hold the handle 1 and pull out the "piston" shaped center column 6 upwards, the attraction of the left-side direction-finding magnet 9 on the mounting magnet 21 and the constraint of the left side surface 8 of the shell will gradually weaken.

[0027] Attached Figure 3 -H, continue to pull out the "piston" shaped center column 6 upwards, and the magnet 21 to be installed will slowly contact the magnet mounting groove 20. When the left-side direction-finding magnet 9 and the left side surface 8 of the shell are completely separated from the magnet 21 to be installed, the magnet 21 to be installed will slowly be installed inside the magnet mounting groove 20. At this time, push the "piston" shaped center column 6 back to its original position.

[0028] The above process is repeated to complete the installation of all magnets to be installed. If the rotor body itself is made of non-magnetic material, the operation process remains the same.

[0029] The above description is only one embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention, such as changing the orientation magnet provided in the present invention from a permanent magnetic material to an electromagnet, and the magnetization direction of the electromagnet is consistent with that in this document; or setting the pre-installed magnet cavities in the present invention to other numbers; or setting the number of orientation magnets provided in the present invention to one piece, but the principle and method for identifying the magnet to be installed are consistent with that in the present invention, should all be included in the protection scope of the present invention.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for identifying the magnetization direction and assisting the installation of the magnetized inner and outer magnetic rotors of a magnetic pump, characterized in that: A support device is provided in the middle of the device, a cavity with an upper opening is provided inside the support device, a support column (4) is provided in the cavity, a "piston"-shaped central column (6) is provided at the lower part of the support column (4), two internal magnetic blocks with no magnetic chain cross-linking or little magnetic chain cross-linking are provided in the "piston"-shaped central column (6), the "piston"-shaped central column (6) is connected to the handle (1) via the support column (4), an upper end cover (2) is provided at the upper part of the support column (4), and a shell with an opening downward is provided below the upper end cover (2). The support device is provided with cavities on both sides, and the cavities on both sides of the support device and the outer shell form a magnet installation space for the inner and outer magnetic rotors of the magnetic pump, and the outer shell is sleeved on the outside of the support device; one side of the outer shell has a characteristic surface with obvious color markings, which is used to clearly indicate the operator's operation sequence when pre-installing and installing magnets; the magnetization directions of the two internal magnetic blocks are in the same direction and are perpendicular to the central axis of the middle moving column; the outer shell is a wing-shaped outer shell, and the two side surfaces are asymmetrical structures with equal widths and unequal lengths; a lower support seat is provided at the bottom of the support device; The "piston"-shaped central column (6) performs "piston"-like motion along the cavity; The magnetization directions of the two internal magnetic blocks are in the same direction and are perpendicular to the central axis of the middle moving column; The overall material of the device is non-magnetic material, which does not have high magnetic permeability and hysteresis characteristics, and specifically is non-magnetic stainless steel, copper, aluminum, and industrial plastic.

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