Nozzle clogging point detection method, nozzle maintenance method and device

Abstract

The present application provides a nozzle blockage point detection method, a nozzle maintenance method and a device, and relates to the field of continuous casting production technology. The nozzle blockage point detection method comprises: removing two screws on the side wall of the nozzle body to expose two screw holes, providing a sound source in one of the screw holes so that the sound wave propagates to the other screw hole through the air medium in the atomization channel. When the sound wave transmitted from the atomization channel is received at the other screw hole, if the attenuation of the sound wave is within a preset value, it is judged that the blockage point is at the nozzle head. When the sound wave transmitted from the atomization channel is not received at the other screw hole or the attenuation of the sound wave received from the atomization channel is at or above the preset value, it is judged that the atomization channel is blocked. The nozzle blockage point detection method of the present application can quickly and accurately determine the blockage point, avoid disassembling and replacing the nozzle, reduce the labor intensity of the staff, and reduce the production cost of replacing the nozzle.

Description

Technical Field

[0001] The present application relates to the technical field of continuous casting production, and in particular to a nozzle blockage point detection method, a nozzle maintenance method and a device. Background Art

[0002] During the continuous casting process, the molten steel flows from the ladle through the tundish and then through the crystallizer into the secondary cooling chamber, where it is cooled and solidified to form ingots of various cross-sections. The nozzles in the secondary cooling chamber can evenly cool the ingots, thereby forming a uniform, dense and good internal structure without leaking steel.

[0003] In the actual production process, due to the low cleanliness of the secondary cooling water and secondary cooling air, the nozzle often becomes clogged, which seriously affects the output and quality of the continuous casting machine. When the nozzle of the secondary cooling chamber is clogged over a large area, the steel flow in the core of the ingot will be biased, the primary ingot shell will be uneven, and the molten steel will flow out (steel leakage). At the same time, the ingot cannot be evenly cooled, the organization formation process, the internal structure is not dense, and the columnar crystals are overdeveloped, which seriously affects the quality of the ingot.

[0004] In the existing technology, the method of detecting and cleaning nozzle blockage mainly relies on operators to enter the secondary cooling chamber, make judgments with the naked eye, and then use conventional tools such as wrenches to disassemble, clean, and reinstall. This method is slow to deal with blocked nozzles, and often the blockage point cannot be accurately found, resulting in the nozzle not being truly cleaned. The operating environment of the secondary cooling chamber is often harsh, and manual judgment and cleaning are difficult, and there are many unsafe factors. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a nozzle blockage point detection method, a nozzle maintenance method and a device, which can quickly and accurately find the blockage point of the nozzle, and maintain the nozzle so that the nozzle can be restored to use as soon as possible.

[0006] In the first aspect, an embodiment of the present application provides a method for detecting nozzle blockage points, wherein the nozzle includes a nozzle body and a nozzle head, the nozzle head is installed on the nozzle body, the nozzle body has air holes and water holes, the air holes and the water holes are connected through an atomization channel, and the side wall of the nozzle body has two opposite screw holes, the two screw holes are connected to the atomization channel through the air holes and the water holes respectively, and each screw hole is installed with a screw.

[0007] Nozzle blockage point detection methods include:

[0008] Remove two screws on the side wall of the nozzle body to expose two screw holes, one of which provides a sound source to allow sound waves to propagate to the other screw hole through the air medium in the atomizing channel.

[0009] When the sound wave transmitted from the atomization channel is received at another screw hole, if the attenuation of the sound wave is within the preset value, it is determined that the blockage point is at the nozzle tip.

[0010] When the sound wave transmitted from the atomization channel is not received at the other screw hole or the attenuation of the sound wave transmitted from the atomization channel is above a preset value, it is determined that the atomization channel is blocked.

[0011] In the above implementation process, the blockage point of the nozzle is generally at the nozzle head and / or the atomization channel. A sound source is provided at one end of the atomization channel, that is, in one of the screw holes, so that the sound wave propagates to the other screw hole through the air medium in the atomization channel.

[0012] If the atomizing channel is not blocked or has very little blockage, the sound waves can propagate unimpeded, and the other end of the atomizing channel, that is, the other screw hole, can receive the sound waves with less attenuation. At this time, it is judged that the atomizing channel is not blocked, but the nozzle head is blocked.

[0013] If the atomization channel is blocked by many objects or completely blocked, the sound wave will be attenuated more during the propagation process, and then the other end of the atomization channel, that is, the other screw hole, cannot receive the sound wave or receives the sound wave but the sound wave is attenuated more. At this time, it is judged that the atomization channel is blocked.

[0014] The nozzle clogging point detection method of the present application can quickly and accurately determine the clogging point, avoid disassembling and replacing the nozzle, reduce the labor intensity of the staff, and reduce the production cost of replacing the nozzle.

[0015] In a possible implementation manner, the preset value is 30%.

[0016] In a possible implementation scheme, a sound source is provided in one of the screw holes so that a sound of 5 to 20 decibels is transmitted to another screw hole through the air medium in the atomization channel. When the sound from the atomization channel is received at the other screw hole, it is judged that the blockage point is at the nozzle head. When the sound from the atomization channel is not received at the other screw hole, it is judged that the atomization channel is blocked.

[0017] In the above implementation process, when the intensity of the sound emitted from one of the screw holes is low, if the atomization channel is not blocked or there is very little blockage, the sound can be transmitted unimpeded, the sound attenuation is less, the sound is almost unchanged, and the sound can be received at the other screw hole; if the atomization channel has more blockages or is completely blocked, the sound attenuates more during the propagation process to the point that it is almost inaudible, and the sound cannot be received at the other screw hole.

[0018] In a possible implementation, a stethoscope is placed in another screw hole to monitor the sound waves transmitted from the atomization channel.

[0019] In the above implementation process, the stethoscope can change the frequency and wavelength of the sound and shield other sounds, so that the staff can clearly hear whether there is any sound coming from the atomization channel.

[0020] In a second aspect, an embodiment of the present application provides a nozzle maintenance method, which includes: using the above-mentioned nozzle blockage point detection method to determine the blockage point of the nozzle.

[0021] When the blockage point is at the nozzle tip, replace the nozzle tip.

[0022] When the atomization channel is blocked, clear the atomization channel.

[0023] In the above implementation process, after the nozzle blockage point is detected by the nozzle blockage point detection method of the present application, the blockage point is immediately cleaned or accessories are replaced, so that the nozzle can be restored to use as soon as possible.

[0024] In a possible implementation, when the atomization channel is blocked and the atomization channel is unblocked, a sound source is provided in one of the screw holes to allow a sound wave of 5 to 20 decibels to propagate to the other screw hole through the air medium in the atomization channel.

[0025] When the sound wave from the atomization channel is received at another screw hole and the attenuation of the sound wave is within 5%, it is determined that the atomization channel is unblocked.

[0026] When the sound wave from the atomization channel is not received at the other screw hole or the attenuation of the sound wave from the atomization channel is 5% or above, continue to dredge the atomization channel until the sound wave from the atomization channel is received at the other screw hole and the attenuation of the sound wave is within 5%, and the dredging is completed.

[0027] In the above implementation process, the present application can also determine whether the atomization channel is unblocked according to the attenuation of the sound wave propagating in the atomization channel, until it is confirmed that the blockage in the atomization channel has been cleared.

[0028] In a possible implementation scheme, when it is determined that the atomization channel is blocked, after the atomization channel is unblocked, the nozzle is used for spraying, and the nozzle is still blocked, it is determined that the nozzle head is also blocked, and the nozzle head is replaced.

[0029] In the above implementation process, the nozzle may also have both the atomization channel and the nozzle head blocked. In this case, the atomization channel should be cleared first and then it is determined whether the nozzle head is blocked. If the nozzle head is blocked, the nozzle head can be replaced.

[0030] In the third aspect, an embodiment of the present application provides a nozzle maintenance device for the above-mentioned nozzle maintenance method, which includes a clearing mechanism and a base, the clearing mechanism includes a rotating needle body, a rotating needle head and a motor, the rotating needle body has a first end and a second end, the rotating needle head is installed at the first end of the rotating needle body, the second end of the rotating needle body is transmission-connected to the motor, and the motor is installed on the base.

[0031] In the above implementation process, the nozzle maintenance device of the present application can clear the atomization channel by rotating the rotating needle, thereby realizing rapid clearing of the atomization channel.

[0032] In a possible embodiment, the rotating needle body and the rotating needle head are both hollow structures, and the dredging mechanism also includes a water bag, and the water outlet of the water bag is connected to the second end of the rotating needle body so that pressurized water can pass through the rotating needle body and then be sprayed out by the rotating needle head.

[0033] In the above implementation process, the water sprayed from the rotating needle head can be used to flush the blockage, flushing the blockage from the atomization channel into the air hole or the water hole, thereby clearing the atomization channel.

[0034] In a possible implementation, the nozzle maintenance device further includes a sound-generating mechanism, which includes a sound generator and a sound-generating tube. The sound generator is mounted on the base, and the sound-generating tube is connected to the output end of the sound generator.

[0035] In the above implementation process, the sound generator is equivalent to a sound source, and the sound tube can guide the sound wave to one of the screw holes, so that the sound wave propagates to the other screw hole through the air medium in the atomization channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore 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.

[0037] Figure 1 A schematic diagram of the structure of a nozzle according to an embodiment of the present application;

[0038] Figure 2 A cross-sectional view of a nozzle maintenance device according to an embodiment of the present application;

[0039] Figure 3 This is a schematic structural diagram of a nozzle maintenance device according to an embodiment of the present application.

[0040] Icons: 10-nozzle; 100-nozzle body; 101-air hole; 102-water hole; 103-atomization channel; 104-screw hole; 110-screw; 200-nozzle head; 20-nozzle maintenance device; 300-base; 400-dredging mechanism; 410-rotating needle body; 420-rotating needle head; 430-motor; 440-rotating needle tube; 450-water bag; 500-sounding mechanism; 510-sound generator; 520-sounding tube; 600-button switch. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0045] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] The present application provides a nozzle clogging point detection method, which is used to quickly and accurately find the clogging point of the nozzle.

[0047] See also Figure 1 The nozzle 10 includes a nozzle body 100 and a nozzle head 200 , and the nozzle head 200 is mounted on the nozzle body 100 .

[0048] The nozzle body 100 has an air hole 101 and a water hole 102. The air hole 101 and the water hole 102 are parallel to each other and penetrate the nozzle body 100. The water hole 102 and the middle of the air hole 101 are connected through an atomization channel 103. The atomization channel 103 is used to atomize the water in the water hole 102 to form water mist that enters the air hole 101.

[0049] Two opposite screw holes 104 are provided on the side wall above the air hole 101 and the side wall below the water hole 102 . The two screw holes 104 are connected to the atomization channel 103 through the air hole 101 and the water hole 102 respectively. A screw 110 is installed in each screw hole 104 .

[0050] When the nozzle 10 fails, it is necessary to quickly and accurately find the blockage point, dredge the blockage point or replace one or some parts so that the nozzle 10 can be restored to use as soon as possible.

[0051] The nozzle blockage point detection method of the present application includes: removing two screws 110 on the side wall of the nozzle body 100 to expose two screw holes 104, and providing a sound source in one of the screw holes 104 to allow sound waves to propagate to the other screw hole 104 through the air medium in the atomization channel 103.

[0052] When the sound wave transmitted from the atomization channel 103 is received at the other screw hole 104 , if the attenuation of the sound wave is within a preset value, it is determined that the blockage point is at the nozzle head 200 .

[0053] When the other screw hole 104 does not receive the sound wave transmitted from the atomization channel 103 or the attenuation of the sound wave received from the atomization channel 103 is above a preset value, it is determined that the atomization channel 103 is blocked.

[0054] The clogging point of the nozzle 10 is generally at the nozzle head 200 and / or the atomizing channel 103 , that is, the clogging point of the nozzle 10 may be at the nozzle head 200 , or may be at the atomizing channel 103 , or may be at both the nozzle head 200 and the atomizing channel 103 .

[0055] A sound source is provided at one end of the atomizing channel 103 , namely, at one of the screw holes 104 , so that the sound wave propagates toward the other screw hole 104 through the air medium in the atomizing channel 103 .

[0056] If the atomizing channel 103 is not blocked or has very little blockage, the sound wave can propagate unimpeded, and the other end of the atomizing channel 103, i.e., the other screw hole 104, can receive the sound wave with less attenuation. At this time, it is determined that the atomizing channel 103 is not blocked, but the nozzle head 200 is blocked.

[0057] If the atomizing channel 103 is blocked by many obstructions or completely blocked, the sound wave is attenuated more during the propagation process, and then the other end of the atomizing channel 103, i.e., the other screw hole 104, cannot receive the sound wave or receives the sound wave but the sound wave is attenuated more. At this time, it is determined that the atomizing channel 103 is blocked.

[0058] It should be noted that the preset value needs to be determined according to factors such as the length of the atomization channel 103 of the nozzle 10 and the intensity of the sound wave.

[0059] Optionally, the preset value is 30%.

[0060] When the sound wave transmitted from the atomization channel 103 is received at the other screw hole 104 , if the attenuation of the sound wave is within 30%, it is determined that the blockage point is at the nozzle head 200 .

[0061] When the other screw hole 104 does not receive the sound wave transmitted from the atomization channel 103 or the attenuation of the sound wave received from the atomization channel 103 is 30% or more, it is determined that the atomization channel 103 is blocked.

[0062] Generally speaking, if the atomization channel 103 is not blocked, the propagation of sound waves will basically not be interfered with, and the attenuation of sound waves is very small, generally within 10%, or even within 5%; if the atomization channel 103 is blocked, the propagation of sound waves will be greatly hindered, so that the attenuation of sound waves is more than 80%, or even more than 90%.

[0063] It should be noted that when the other screw hole 104 receives the sound wave, one can directly listen to whether there is sound coming from the atomization channel 103, or use a professional sound wave receiver to receive it.

[0064] The present application provides a specific detection method, which includes: providing a sound source in one of the screw holes 104 so that a sound of 5 to 20 decibels is transmitted to another screw hole 104 through the air medium in the atomization channel 103; when the sound from the atomization channel 103 is received in the other screw hole 104, it is determined that the blockage point is at the nozzle head 200; when the sound from the atomization channel 103 is not received in the other screw hole 104, it is determined that the atomization channel 103 is blocked.

[0065] When the intensity of the sound emitted from one of the screw holes 104 is low, if the atomization channel 103 is not blocked or has very little blockage, the sound can propagate unimpeded, the sound attenuation is less, the sound is almost unchanged, and the sound can be received in the other screw hole 104; if the atomization channel 103 has many blockages or is completely blocked, the sound attenuates greatly during the propagation process to the point that it is almost inaudible, and the sound cannot be received in the other screw hole 104.

[0066] Optionally, a stethoscope is placed in another screw hole 104 to monitor the sound waves transmitted from the atomization channel 103 .

[0067] The stethoscope can change the frequency and wavelength of the sound and shield other sounds, so that the staff can clearly hear whether there is any sound coming from the atomization channel 103.

[0068] The present application provides a nozzle maintenance method, which includes: using the above-mentioned nozzle blockage point detection method to determine the blockage point of the nozzle 10, and clearing or replacing components according to the determined blockage point.

[0069] When the clogging point is at the nozzle tip 200 , replace the nozzle tip 200 .

[0070] When the atomization channel 103 is blocked, the atomization channel 103 is unblocked.

[0071] After the nozzle clogging point of the nozzle 10 is detected by the nozzle clogging point detection method of the present application, the clogging point is immediately cleaned or accessories are replaced, so that the nozzle 10 can be restored to use as soon as possible.

[0072] After determining that the nozzle 10 has a blocking point in the atomizing channel 103 by the above-mentioned nozzle blocking point detection method, the atomizing channel 103 is unblocked, and then the following method is used to determine whether the atomizing channel 103 is unblocked:

[0073] A sound source is provided in one of the screw holes 104 so that a sound wave of 5 to 20 decibels is propagated toward the other screw hole 104 through the air medium in the atomization channel 103 .

[0074] When the sound wave transmitted from the atomization channel 103 is received at the other screw hole 104 and the attenuation of the sound wave is within 5%, it is determined that the atomization channel 103 is completely unblocked.

[0075] When the sound wave from the atomization channel 103 is not received in the other screw hole 104 or the attenuation of the sound wave received from the atomization channel 103 is 5% or above, the atomization channel 103 continues to be unblocked until the sound wave from the atomization channel 103 is received in the other screw hole 104 and the attenuation of the sound wave is within 5%, and the unblocking is completed.

[0076] The above method can determine whether the atomization channel 103 is completely unblocked according to the attenuation of the sound wave when propagating in the atomization channel 103, until it is confirmed that the blockage in the atomization channel 103 has been cleared.

[0077] If the atomization channel 103 is only partially unblocked, the atomization channel 103 may be more easily blocked next time.

[0078] When it is determined that the atomizing channel 103 is blocked, after the atomizing channel 103 is unblocked, the nozzle 10 is used for spraying, and the nozzle 10 is still blocked. That is, the atomizing channel 103 and the nozzle head 200 of the nozzle 10 may be blocked at the same time, and the nozzle head 200 needs to be replaced at this time.

[0079] See also Figure 2 and Figure 3 The present application also provides a nozzle maintenance device 20 for the above-mentioned nozzle maintenance method, which includes a base 300 and a dredging mechanism 400.

[0080] The dredging mechanism 400 includes a rotating needle body 410, a rotating needle head 420 and a motor 430. The rotating needle body 410 has a first end and a second end. The rotating needle head 420 is installed on the first end of the rotating needle body 410. The second end of the rotating needle body 410 is transmission-connected to the motor 430. The motor 430 is installed on the base 300.

[0081] The motor 430 is used to drive the rotating needle body 410 to rotate, and then drive the rotating needle head 420 installed at the end of the rotating needle body 410 to rotate. The rotating needle is equivalent to a drill bit, which can be used to drill the atomization channel 103 to separate the blockage from the inner wall of the atomization channel 103, thereby quickly unblocking the atomization channel 103.

[0082] The dredging mechanism 400 further includes a rotating needle tube 440, which is mounted on the base 300, and the rotating needle body 410 is rotatably mounted inside the rotating needle tube 440. The rotating needle tube 440 is used to fix the rotating needle body 410.

[0083] The rotating needle body 410 and the rotating needle head 420 are both hollow structures. The dredging mechanism 400 also includes a water bag 450, which is installed on the upper side of the rotating needle tube 440 and supported by the rotating needle tube 440. The water outlet of the water bag 450 is connected to the second end of the rotating needle body 410 so that the pressurized water can pass through the rotating needle body 410 and then be sprayed out by the rotating needle head 420.

[0084] The water sprayed from the rotating needle head 420 can be used to flush the blockage, flushing the blockage from the atomization channel 103 into the air hole 101 or the water hole 102 to clear the atomization channel 103.

[0085] The nozzle maintenance device 20 further includes a sound generating mechanism 500 , which includes a sound generator 510 and a sound generating tube 520 . The sound generator 510 is mounted on the base 300 , and the sound generating tube 520 is connected to the output end of the sound generator 510 .

[0086] The sound generator 510 is equivalent to a sound source, and the sound tube 520 can guide the sound wave to one of the screw holes 104 so that the sound wave propagates to the other screw hole 104 through the air medium in the atomization channel 103 .

[0087] In such Figure 2 and Figure 3In the illustrated embodiment, since the unblocking mechanism 400 and the sound-generating mechanism 500 are used separately, the rotating needle tube 440 and the sound-generating tube 520 extend in opposite directions, so that the unblocking mechanism 400 or the sound-generating mechanism 500 will not be interfered by the other mechanism when in use.

[0088] The nozzle maintenance device 20 further includes two button switches 600 , which are respectively connected to the motor 430 and the sound generator 510 , and are used to control the switching of the motor 430 and the sound generator 510 .

[0089] When the nozzle maintenance device 20 of the present application is used to perform the nozzle maintenance method, the sound tube 520 of the nozzle maintenance device 20 is inserted into one of the screw holes 104, the button switch 600 controlling the sound generator 510 is pressed to make the sound generator 510 start to sound, and a stethoscope is placed in another screw hole 104 to monitor the sound waves transmitted from the atomization channel 103.

[0090] When the sound wave transmitted from the atomization channel 103 is received at the other screw hole 104, if the attenuation of the sound wave is within 30%, it is determined that the blockage point is at the nozzle head 200, and the nozzle head 200 is replaced at this time.

[0091] When the other screw hole 104 does not receive the sound wave transmitted from the atomization channel 103 or the attenuation of the sound wave received from the atomization channel 103 is 30% or more, it is determined that the atomization channel 103 is blocked.

[0092] At this time, the button switch 600 for controlling the sound generator 510 is pressed to stop the sound generator 510, the nozzle maintenance device 20 is rotated to align the rotating needle head 420 with one of the screw holes 104, the button switch 600 for controlling the motor 430 is pressed to start the rotating needle head 420 to rotate, and the rotating needle head 420 is inserted into the atomization channel 103 to open and clean the blocked point. At the same time, water is filled in the water bag 450, and the water is pressurized and sprayed out from the hole of the rotating needle head 420 to flush out the blocked object rotated out by the rotating needle head 420, and the button switch 600 for controlling the motor 430 is pressed to stop the rotating needle head 420 from rotating.

[0093] Check whether the atomization channel 103 is completely unblocked, rotate the nozzle maintenance device 20 so that its sound tube 520 extends into one of the screw holes 104, press the button switch 600 that controls the sound generator 510 to make the sound generator 510 start to sound, and place the stethoscope on the other screw hole 104 to monitor the sound waves transmitted from the atomization channel 103. If the sound waves transmitted from the atomization channel 103 are not received in the other screw hole 104 or the attenuation of the sound waves received from the atomization channel 103 is 5% or more, continue to use the rotating needle 420 to dredge the atomization channel 103 until the sound waves transmitted from the atomization channel 103 are received in the other screw hole 104 and the attenuation of the sound waves is within 5%, and the unblocking is completed.

[0094] In summary, the embodiment of the present application provides a nozzle blockage point detection method that can quickly and accurately determine the blockage point, avoid disassembling and replacing the nozzle 10, reduce the labor intensity of the staff, and reduce the production cost of replacing the nozzle 10. After the blockage point of the nozzle 10 is detected by the nozzle blockage point detection method, the blockage point is immediately cleaned or the accessories are replaced, so that the nozzle 10 can be restored to use as soon as possible. The nozzle maintenance device 20 can dredge the atomization channel 103 by rotating the needle head 420, thereby realizing rapid dredging of the atomization channel 103.

[0095] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A nozzle maintenance method, characterized in that: The nozzle comprises a nozzle body and a nozzle head, wherein the nozzle head is mounted on the nozzle body, the nozzle body has an air hole and a water hole, the air hole and the water hole are connected through an atomizing channel, the side wall of the nozzle body has two opposite screw holes, the two screw holes are respectively connected to the atomizing channel through the air hole and the water hole, and each of the screw holes is installed with a screw; The nozzle maintenance method comprises: using a nozzle blockage point detection method to determine the blockage point of the nozzle; When the blockage point is at the nozzle head, replace the nozzle head; When the atomization channel is blocked, unblocking the atomization channel; The nozzle clogging point detection method comprises: Remove the two screws on the side wall of the nozzle body to expose the two screw holes, and provide a sound source in one of the screw holes so that the sound wave propagates to the other screw hole through the air medium in the atomization channel; When a sound wave transmitted from the atomization channel is received at another screw hole, if the attenuation of the sound wave is within a preset value, it is determined that the blockage point is at the nozzle head; When the sound wave transmitted from the atomization channel is not received at the other screw hole or the attenuation of the sound wave transmitted from the atomization channel is above the preset value, it is determined that the atomization channel is blocked; Or, a sound source is provided in one of the screw holes so that a sound of 5 to 20 decibels is transmitted to the other screw hole through the air medium in the atomization channel, and when the sound from the atomization channel is received at the other screw hole, it is determined that the blockage point is at the nozzle head, and when the sound from the atomization channel is not received at the other screw hole, it is determined that the atomization channel is blocked; When the atomization channel is blocked, after the atomization channel is unblocked, a sound source is provided in one of the screw holes so that a sound wave of 5 to 20 decibels is transmitted to the other screw hole through the air medium in the atomization channel; When the sound wave transmitted from the atomization channel is received at the other screw hole and the attenuation of the sound wave is within 5%, it is determined that the atomization channel is unblocked; When the sound wave transmitted from the atomization channel is not received at the other screw hole or the attenuation of the sound wave received from the atomization channel is 5% or more, the atomization channel is continued to be unblocked until the sound wave transmitted from the atomization channel is received at the other screw hole and the attenuation of the sound wave is within 5%, and the unblocking is completed; When it is determined that the atomization channel is blocked, after the atomization channel is unblocked, the nozzle is used for spraying, and if the nozzle is still blocked, it is determined that the nozzle head is also blocked, and the nozzle head is replaced; Using a nozzle maintenance device to perform the nozzle maintenance method; The nozzle maintenance device comprises a dredging mechanism and a base body, wherein the dredging mechanism comprises a rotating needle body, a rotating needle head and a motor, wherein the rotating needle body has a first end and a second end, the rotating needle head is mounted on the first end of the rotating needle body, the second end of the rotating needle body is transmission-connected to the motor, and the motor is mounted on the base body; The rotating needle body and the rotating needle head are both hollow structures, and the dredging mechanism further comprises a water bag, the water outlet of which is connected to the second end of the rotating needle body so that the pressurized water can pass through the rotating needle body and then be sprayed out by the rotating needle head; The nozzle maintenance device also includes a sound-generating mechanism, which includes a sound generator and a sound-generating tube. The sound generator is installed on the base, and the sound-generating tube is connected to the output end of the sound generator.

2. The nozzle maintenance method according to claim 1, characterized in that: The preset value is 30%.

3. The nozzle maintenance method according to claim 1, characterized in that: A stethoscope is placed in another of the screw holes to monitor the sound waves coming from the atomization channel.

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