A front-mixed ship rust remover with magnetic eddy current resistance speed-regulating self-rotating nozzle

Abstract

The invention discloses a magnetic eddy current resistance speed regulating self-rotating nozzle of a front-mixed ship rust remover, which comprises a liquid inlet joint lock nut, a load-relief sealing ring, a rotating sleeve, an angular contact bearing, a deep groove ball bearing, a sleeve O-ring, a neodymium magnet sleeve, a front sealing cover, a copper sleeve oil seal, a copper sleeve shield, an oil seal, a lower alloy nozzle, an upper alloy nozzle, a self-rotating body, a rotating body lock nut, a copper sleeve lock nut, an eddy current copper sleeve, a sealing O-ring, an arc-shaped neodymium magnet, a magnet bracket, a hollow liquid outlet rotating shaft, a rubber oil seal, a skeleton oil seal, a rotating hollow alloy, an alloy O-ring, and a stationary hollow alloy, forming a magnetic eddy current resistance speed regulating self-rotating nozzle of a front-mixed ship rust remover.

Description

Technical Field

[0001] The invention relates to a magnetic eddy current resistance speed regulating self-rotating nozzle of a front-mix ship rust remover, specifically a device which can generate eddy currents by rotating a strong conductor in a strong magnetic field, convert the rotation energy into electrical energy, and generate resistance to adjust the rotation speed of the self-rotating nozzle body. Background Art

[0002] At present, most of the self-rotating nozzles of front-mix ship rust removal machines are greatly affected by the supply pressure and the diameter of the nozzle during the self-selection process: when the pressure is low and the nozzle diameter is small, the nozzle cannot rotate automatically; when the pressure is high and the nozzle diameter is large, the nozzle rotates very fast, reaching 6500rpm. Both of these states are not suitable for normal work; engineers often design the self-rotating nozzle as two nozzles, and the radial distance and axial angle of the two nozzles are as large as possible, which are sufficient to rotate automatically under low pressure fluctuations. In this way, when the system pressure is high, the rotation speed of the self-rotating nozzle body will be very fast, close to 7000rpm, which is not an ideal rotation speed for rust removal; however, there is currently no device that can keep the self-rotating nozzle rotating under very low pressure fluctuations, and can adjust and reduce the rotation speed under very high pressure to solve this problem. Summary of the invention

[0003] The invention aims to solve the problem that "most of the self-rotating nozzles of front-mix ship rust removers are greatly affected by the supply pressure and the diameter of the nozzle during the self-selection process: when the pressure is low and the nozzle diameter is small, the nozzle cannot rotate automatically; when the pressure is high and the nozzle diameter is large, the nozzle rotates very fast, reaching 6500rpm. Both states are not suitable for normal work; engineers often design the self-rotating nozzle as two nozzles, and the radial distance and axial angle of the two nozzles are as large as possible, which are sufficient to rotate automatically under the condition of low pressure fluctuation. In this way, when the pressure of the system is high, the rotation speed of the self-rotating nozzle body will be very fast, close to 7000rpm, which is not an ideal rotation speed in rust removal work". A magnetoelectric eddy current resistance speed-regulating self-rotating nozzle for a front-mix ship rust remover is proposed, which can keep rotating when the pressure fluctuation is very low, and can adjust and reduce the rotation speed when the pressure is very high, so as to achieve the purpose of being able to adjust the rotation speed of the self-rotating nozzle.

[0004] The present invention is realized by the following technical solutions:

[0005] A front-mixed ship rust remover magnetic eddy current resistance speed regulating self-rotating nozzle, comprising a liquid inlet joint lock nut 1, a load-relief sealing ring 2, a rotating sleeve 3, an angular contact bearing 4, a deep groove ball bearing 5, a sleeve O-ring 6, a neodymium magnet sleeve 7, a front cover 8, a copper sleeve oil seal 9, a copper sleeve shield 10, an oil seal 11, a lower alloy nozzle 12, an upper alloy nozzle 13, a self-rotating body 14, a rotating body lock nut 15, a copper sleeve lock nut 16, an eddy current copper sleeve 17, a cover O-ring 18, an arc-shaped neodymium magnet 19, a magnet bracket 20, a hollow liquid outlet rotating shaft 21, a rubber oil seal 22, and a skeleton oil seal 23. Rotating hollow alloy 24, alloy O-ring 25, stationary hollow alloy 26; characterized in that the angular contact bearing 4 and deep groove ball bearing 5 are sequentially installed on the outside of the hollow liquid outlet rotating shaft 21, the eddy current copper sleeve 17 and the copper sleeve lock nut 16 are threadedly sleeved on the outside of the hollow liquid outlet rotating shaft 21 and can rotate clockwise or counterclockwise, the rotating hollow alloy 24 is installed on the inside of the hollow liquid outlet rotating shaft 21, and the hollow liquid outlet rotating shaft 21 is installed in the rotating sleeve 3; the 6 arc-shaped neodymium magnets 19 are installed in the magnet bracket 20, the angles between the magnets are 60°, and each magnet is aligned with the opposite magnet. A group of oppositely charged objects attract each other, and three pairs of high-density magnetic flux strong magnetic fields that do not interfere with each other are formed in the neodymium magnet sleeve 7. The magnet bracket 20 is installed in the neodymium magnet sleeve 7, and the sleeve O-ring 6 and the cover O-ring 18 are respectively installed at both ends of the neodymium magnet sleeve 7; the front cover 8 is tightened on the front end of the neodymium magnet sleeve 7 and presses the cover O-ring 18; the copper sleeve shield 10 is tightened on the front cover 8, and the copper sleeve oil seal 9 and the oil seal 11 are respectively placed in the front cover 8 and the copper sleeve shield 10; the rear end of the neodymium magnet sleeve 7 is tightened with the front end of the rotating sleeve 3; the skeleton oil seal 23, the alloy O-ring 25, The stationary hollow alloy 26 is installed in the center hole of the liquid inlet joint lock nut 1, the unloading sealing ring 2 is sleeved around the unloading hole of the liquid inlet joint lock nut 1, and the liquid inlet joint lock nut 1 is fastened to the rear end of the rotating sleeve 3 in the form of a thread; the lower alloy nozzle 12, the upper alloy nozzle 13, and the rotating body lock nut 15 are installed on the self-rotating body 14, the radial straight-line distance between the lower alloy nozzle 12 and the upper alloy nozzle 13 is 25 mm, and the axial angle is 25°. The rotating body lock nut 15 is tightened to the front end of the hollow liquid outlet rotating shaft 21 to form a ship rust removal machine magnetoelectric eddy current resistance speed-regulating self-rotating nozzle.

[0006] In order to further achieve the purpose of convenient control operation, the copper sleeve lock nut 16 and the eddy current copper sleeve 17 are threadedly sleeved on the outside of the hollow liquid outlet rotating shaft 21. The eddy current copper sleeve 17 is manually rotated to extend into the length of the arc-shaped neodymium magnet 19 to adjust the size of the cutting magnetic flux, that is, the size of the rotational resistance to the rotating body 14 is adjusted, and the rotation speed of the rotating body 14 is also adjusted.

[0007] The invention has the following advantages over the existing self-rotating nozzles:

[0008] 1. With high-pressure bearing performance: it can work normally at a pressure of 60MPa.

[0009] 2. It has the function of automatically adjusting the rotation speed: when the supplied water pressure is low, the rotation speed of the self-rotating body 14 is low, the rotation speed of the eddy current copper sleeve 17 decreases, the cutting magnetic lines of force decreases, the resistance generated decreases, and the self-rotating body 14 keeps rotating normally; when the supplied water pressure is high, the rotation speed of the self-rotating body 14 is very fast, the rotation speed of the eddy current copper sleeve 17 is very fast, the cutting magnetic lines of force increase, the resistance generated increases, and the rotation speed is automatically reduced to keep the self-rotating body 14 rotating normally.

[0010] 3. It has an automatic cooling function: when the pressure supplied by the system to the rotating body 14 is high, the rotating body 14 rotates very fast, and the eddy current copper sleeve 17 rotates very fast. The eddy current copper sleeve 17 cuts a large number of magnetic lines and generates a large amount of heat. This heat will be taken away by high-speed water passing through the hollow liquid outlet rotating shaft 21, causing it to cool down automatically.

[0011] 4. The structure is simple, the entire front-mix ship rust remover magnetic eddy current resistance speed regulating self-rotating nozzle is small in size, light in weight, complete in specifications and models, easy to install, and easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a composition structure diagram of a magnetic eddy current resistance speed regulating self-rotating nozzle of a front-mix ship rust remover;

[0014] In the figure:

[0015] Liquid inlet joint lock nut 1, unloading sealing ring 2, rotating sleeve 3, angular contact bearing 4, deep groove ball bearing 5, sleeve O-ring 6, neodymium magnet sleeve 7, front cover 8, copper sleeve oil seal 9, copper sleeve shield 10, oil seal 11, lower alloy nozzle 12, upper alloy nozzle 13, self-rotating body 14, rotating body lock nut 15, copper sleeve lock nut 16, eddy current copper sleeve 17, cover O-ring 18, arc-shaped neodymium magnet 19, magnet bracket 20, hollow core liquid outlet rotating shaft 21, rubber oil seal 22, skeleton oil seal 23, rotating hollow core alloy 24, alloy O-ring 25, stationary hollow core alloy 26. DETAILED DESCRIPTION

[0016] A front-mixed ship rust remover magnetic eddy current resistance speed regulating self-rotating nozzle, comprising a liquid inlet joint lock nut 1, a load-relief sealing ring 2, a rotating sleeve 3, an angular contact bearing 4, a deep groove ball bearing 5, a sleeve O-ring 6, a neodymium magnet sleeve 7, a front cover 8, a copper sleeve oil seal 9, a copper sleeve shield 10, an oil seal 11, a lower alloy nozzle 12, an upper alloy nozzle 13, a self-rotating body 14, a rotating body lock nut 15, a copper sleeve lock nut 16, an eddy current copper sleeve 17, a cover O-ring 18, an arc-shaped neodymium magnet 19, a magnet bracket 20, a hollow liquid outlet rotating shaft 21, a rubber oil seal 22, and a skeleton oil seal 23. Rotating hollow alloy 24, alloy O-ring 25, stationary hollow alloy 26; characterized in that the angular contact bearing 4 and deep groove ball bearing 5 are sequentially installed on the outside of the hollow liquid outlet rotating shaft 21, the eddy current copper sleeve 17 and the copper sleeve lock nut 16 are threadedly sleeved on the outside of the hollow liquid outlet rotating shaft 21 and can rotate clockwise or counterclockwise, the rotating hollow alloy 24 is installed on the inside of the hollow liquid outlet rotating shaft 21, and the hollow liquid outlet rotating shaft 21 is installed in the rotating sleeve 3; the 6 arc-shaped neodymium magnets 19 are installed in the magnet bracket 20, the angles between the magnets are 60°, and each magnet is aligned with the opposite magnet. A group of oppositely charged objects attract each other, and three pairs of high-density magnetic flux strong magnetic fields that do not interfere with each other are formed in the neodymium magnet sleeve 7. The magnet bracket 20 is installed in the neodymium magnet sleeve 7, and the sleeve O-ring 6 and the cover O-ring 18 are respectively installed at both ends of the neodymium magnet sleeve 7; the front cover 8 is tightened on the front end of the neodymium magnet sleeve 7 and presses the cover O-ring 18; the copper sleeve shield 10 is tightened on the front cover 8, and the copper sleeve oil seal 9 and the oil seal 11 are respectively placed in the front cover 8 and the copper sleeve shield 10; the rear end of the neodymium magnet sleeve 7 is tightened with the front end of the rotating sleeve 3; the skeleton oil seal 23, the alloy O-ring 25, The stationary hollow alloy 26 is installed in the center hole of the liquid inlet joint lock nut 1, the unloading sealing ring 2 is sleeved around the unloading hole of the liquid inlet joint lock nut 1, and the liquid inlet joint lock nut 1 is fastened to the rear end of the rotating sleeve 3 in the form of a thread; the lower alloy nozzle 12, the upper alloy nozzle 13, and the rotating body lock nut 15 are installed on the self-rotating body 14, the radial straight-line distance between the lower alloy nozzle 12 and the upper alloy nozzle 13 is 25 mm, and the axial angle is 25°. The rotating body lock nut 15 is tightened to the front end of the hollow liquid outlet rotating shaft 21 to form a ship rust removal machine magnetoelectric eddy current resistance speed-regulating self-rotating nozzle.

[0017] During operation, the high-pressure mixed water of 50MPa is pumped into the stationary hollow alloy 26 through the liquid inlet joint lock nut 1, the rotating hollow alloy 24, the hollow liquid outlet rotating shaft 21, and the self-rotating body 14, and then ejected at high speed from the lower alloy nozzle 12 and the upper alloy nozzle 13; the sleeve O-ring 6, the copper sleeve oil seal 9, the oil seal 11, the cover O-ring 18, the rubber oil seal 22, the skeleton oil seal 23, and the alloy O-ring 25 play a sealing role in the hydraulic system, and the unloading sealing ring 2 prevents the unloading liquid from splashing from the unloading hole of the liquid inlet joint lock nut 1; the upper alloy nozzle and the lower alloy nozzle eject water at a high speed at an axial angle of 25°, and the generated rotational recoil forces the hollow liquid outlet rotating shaft 21 to rotate at a high speed of nearly 6500rpm under the condition that the angular contact bearing 4 and the deep groove ball bearing 5 reduce the friction force, which is not the rotation required during operation. speed; the hollow liquid outlet rotating shaft 21 drives the eddy current copper sleeve 17 to rotate synchronously at a high speed, and the eddy current copper sleeve 17 rotates at a high speed in the neodymium magnet sleeve 7, cutting the three pairs of strong magnetic flux lines of high-density magnetic flux formed by the six arc-shaped neodymium magnets 19, so that a strong eddy current is generated inside the eddy current copper sleeve 17 to make it heat up and do work; in this way, part of the rotational kinetic energy of the rotating body 14 is converted into electrical energy to make the eddy current copper sleeve 17 heat up and reduce the speed; the eddy current generated by the high-speed rotation of the eddy current copper sleeve 17 does work inside The temperature rise will continue to increase. At this time, the heat generated is transferred to the hollow liquid outlet rotating shaft 21. The high-speed water in the hollow liquid outlet rotating shaft 21 absorbs the heat and is ejected through the nozzle to cool the eddy current copper sleeve 17, so that the entire rotating system works at a temperature of ≤65°C, ensuring the normal working temperature of each rubber seal and playing a stable sealing role; the eddy current copper sleeve 17 rotates clockwise, and the length of the eddy current copper sleeve 17 entering the neodymium magnet sleeve 7 increases, and the magnetic flux cut by the eddy current copper sleeve 17 when rotating The amount increases, the generated eddy current increases, the resistance to the rotation of the self-rotating body 14 increases, and its rotation speed is reduced; the eddy current copper sleeve 17 is rotated counterclockwise, the length of the eddy current copper sleeve 17 entering the neodymium magnet sleeve 7 is reduced, the magnetic flux cut by the eddy current copper sleeve 17 during rotation is reduced, the generated eddy current is reduced, the resistance to the rotation of the self-rotating body 14 is reduced, and its rotation speed is increased, forming a group of self-rotating bodies 14 with adjustable speed, achieving the design purpose of the magnetic eddy current resistance speed regulating self-rotating nozzle of the front-mixed ship rust remover.

[0018] When stopping working, turn off the power supply, stop the centrifugal pump from supplying fluid, clean the magnetic eddy current resistance speed-regulating self-rotating nozzle of the front-mix ship rust remover, and place it in a dry place to air dry to prevent rust so as to ensure long-term normal use.

[0019] Practice has proved that the magnetic eddy current resistance speed-regulating self-rotating nozzle of the front-mixed ship rust remover manufactured according to the above scheme has a maximum bearing pressure range of 60MPa, 45MPa, 31.5MPa, and 20MPa, and the flow range of the magnetic eddy current resistance speed-regulating self-rotating nozzle of the front-mixed ship rust remover is 100L / min, 80L / min, 50L / min, and 40L / min.

Claims

1. A front-mixed ship rust remover with magnetic eddy current resistance speed regulating self-rotating nozzle, comprising a liquid inlet joint lock nut (1), a load-relief seal ring (2), a rotating sleeve (3), an angular contact bearing (4), a deep groove ball bearing (5), a sleeve O-ring (6), a neodymium magnet sleeve (7), a front cover (8), a copper sleeve oil seal (9), a copper sleeve shield (10), an oil seal (11), a lower alloy nozzle (12), and an upper alloy nozzle (13), self-rotating body (14), rotating body lock nut (15), copper sleeve lock nut (16), eddy current copper sleeve (17), cover O-ring (18), arc-shaped neodymium magnet (19), magnet bracket (20), hollow liquid outlet rotating shaft (21), rubber oil seal (22), skeleton oil seal (23), rotating hollow alloy (24), alloy O-ring (25), stationary hollow alloy (26); characterized in that The angular contact bearing (4) and the deep groove ball bearing (5) are sequentially mounted on the outside of the hollow liquid outlet rotating shaft (21); the eddy current copper sleeve (17) and the copper sleeve lock nut (16) are threadedly mounted on the outside of the hollow liquid outlet rotating shaft (21) and can rotate clockwise or counterclockwise; the rotating hollow alloy (24) is mounted on the inside of the hollow liquid outlet rotating shaft (21); and the hollow liquid outlet rotating shaft (21) is mounted in the rotating sleeve (3); the six arc-shaped neodymium magnets (19) are mounted on the magnet bracket. (20), the angles between the magnets are 60°, each magnet forms a group of oppositely charged states with the opposite magnet, and three pairs of high-density magnetic flux strong magnetic fields that do not interfere with each other are formed in the neodymium magnet sleeve (7). The magnet bracket (20) is installed in the neodymium magnet sleeve (7), and the sleeve O-ring (6) and the cover O-ring (18) are respectively installed at both ends of the neodymium magnet sleeve (7); the front cover (8) is tightened on the front end of the neodymium magnet sleeve (7) and presses the cover O-ring (18); the copper sleeve shield (10) is screwed on the front cover (8), the copper sleeve oil seal (9) and the oil seal (11) are placed in the front cover (8) and the copper sleeve shield (10) respectively; the rear end of the neodymium magnet sleeve (7) is screwed with the front end of the rotating sleeve (3); the skeleton oil seal (23), the alloy O-ring (25), and the static hollow alloy (26) are installed in the center hole of the liquid inlet joint lock nut (1), the unloading seal ring (2) is sleeved around the unloading hole of the liquid inlet joint lock nut (1), and the liquid inlet joint lock nut (1) is screwed on the front cover (8) and the copper sleeve shield (10) respectively; the rear end of the neodymium magnet sleeve (7) is screwed with the front end of the rotating sleeve (3); the skeleton oil seal (23), the alloy O-ring (25), and the static hollow alloy (26) are installed in the center hole of the liquid inlet joint lock nut (1), and the unloading seal ring (2) is sleeved around the unloading hole of the liquid inlet joint lock nut (1). ) is fastened to the rear end of the rotating sleeve (3) in the form of a thread; the lower alloy nozzle (12), the upper alloy nozzle (13), and the rotating body lock nut (15) are installed on the self-rotating body (14), the radial straight-line distance between the lower alloy nozzle (12) and the upper alloy nozzle (13) is 25 mm, and the sum of the axial angles is 25°, and the rotating body lock nut (15) is tightened to the front end of the hollow liquid outlet rotating shaft (21), thereby forming a magnetic eddy current resistance speed-regulating self-rotating nozzle for a ship rust removal machine.

2. According to claim 1, a front-mix ship rust remover magnetic eddy current resistance speed regulating self-rotating nozzle is characterized by: The high-pressure mixed water of 50 MPa is pumped into the stationary hollow alloy (26) through the liquid inlet joint lock nut (1), the rotating hollow alloy (24), the hollow liquid outlet rotating shaft (21), and the self-rotating body (14), and then ejected at high speed from the lower alloy nozzle (12) and the upper alloy nozzle (13); the sleeve O-ring (6), the copper sleeve oil seal (9), the oil seal (11), the cover O-ring (18), the rubber oil seal (22), the skeleton oil seal (23), and the alloy O-ring (25) play a sealing role in the hydraulic system, and the unloading seal ring ( 2) Preventing the unloading liquid from splashing out of the unloading hole of the liquid inlet joint lock nut (1); the upper alloy nozzle (13) and the lower alloy nozzle (12) eject water at a high speed at an axial angle of 25°, and the generated rotational recoil forces the hollow liquid outlet rotating shaft (21) to rotate at a high speed of nearly 6500 rpm under the condition that the angular contact bearing (4) and the deep groove ball bearing (5) reduce the friction force, which is not the speed required during operation; the hollow liquid outlet rotating shaft (21) drives the eddy current copper sleeve (17) to rotate synchronously at a high speed, and the eddy current copper sleeve (17) rotates at a high speed. The neodymium magnet sleeve (7) rotates at a high speed, cutting three pairs of strong magnetic lines of high-density magnetic flux formed by six arc-shaped neodymium magnets (19), so that a strong eddy current is generated inside the eddy current copper sleeve (17) to generate heat and do work; in this way, a part of the rotational kinetic energy of the rotating body (14) is converted into electrical energy to generate heat for the eddy current copper sleeve (17), thereby reducing the rotation speed; the eddy current generated by the eddy current copper sleeve (17) during the high-speed rotation generates work and generates heat inside, and the temperature rise will continue to increase. At this time, the generated heat is transferred to the hollow core liquid outlet rotating shaft (21), and the hollow core outlet The high-speed water in the liquid rotating shaft (21) absorbs heat and is ejected through the nozzle, cooling the eddy current copper sleeve (17), so that the entire rotating system operates at a temperature of ≤65°C, ensuring the normal operating temperature of each rubber seal and playing a stable sealing role; the eddy current copper sleeve (17) rotates clockwise, the length of the eddy current copper sleeve (17) entering the neodymium magnet sleeve (7) increases, the magnetic flux cut by the eddy current copper sleeve (17) increases when the eddy current copper sleeve (17) rotates, the eddy current generated increases, the resistance to the rotation of the self-rotating body (14) increases, and its rotation speed is reduced; The eddy current copper sleeve (17) rotates counterclockwise, and the length of the eddy current copper sleeve (17) entering the neodymium magnet sleeve (7) is reduced. The magnetic flux cut by the eddy current copper sleeve (17) during rotation is reduced, and the generated eddy current is reduced, thereby reducing the resistance to the rotation of the self-rotating body (14), increasing its rotation speed, and forming a group of self-rotating bodies (14) with adjustable speed, thereby achieving the design purpose of the magnetic eddy current resistance speed regulating self-rotating nozzle of the front-mixed ship rust remover.

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