CN112098521B - Nozzle clogging point detection method, nozzle maintenance method and device - Google Patents
Nozzle clogging point detection method, nozzle maintenance method and device Download PDFInfo
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- CN112098521B CN112098521B CN202010998553.6A CN202010998553A CN112098521B CN 112098521 B CN112098521 B CN 112098521B CN 202010998553 A CN202010998553 A CN 202010998553A CN 112098521 B CN112098521 B CN 112098521B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012423 maintenance Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 238000000889 atomisation Methods 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009749 continuous casting Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 description 33
- 238000002663 nebulization Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 230000002238 attenuated effect Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/11—Analysing solids by measuring attenuation of acoustic waves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Nozzles (AREA)
Abstract
本申请提供一种喷嘴堵塞点检测方法、喷嘴维护方法及装置，涉及连铸生产技术领域。喷嘴堵塞点检测方法包括：拆下喷嘴体的侧壁上的两个螺钉使两个螺孔露出，在其中一个螺孔提供声源以使声波通过雾化通道内的空气介质向另一个螺孔传播。当在另一个螺孔接收到从雾化通道传来的声波，若声波的衰减在预设值以内，判断堵塞点在喷嘴头。当在另一个螺孔未接收到雾化通道传来的声波或接收到从雾化通道传来的声波的衰减在预设值及以上，判断雾化通道堵塞。本申请的喷嘴堵塞点检测方法能够快速准确判断堵塞点，避免拆装更换喷嘴，减少工作人员劳动强度，降低更换喷嘴的生产成本。
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
The application relates to the technical field of continuous casting production, in particular to a nozzle blocking point detection method, a nozzle maintenance method and a nozzle maintenance device.
Background
In the continuous casting production process, molten steel flows from a large ladle through a tundish, then flows into a secondary cooling chamber through a crystallizer, and is cooled and solidified to form casting blanks with various sections. The nozzle of the secondary cooling chamber can cool the blank uniformly, so that the uniform, compact and good internal structure is formed on the basis of no steel leakage.
In the actual production process, due to factors such as low cleanliness of the secondary cooling water and the secondary cooling water, abnormal conditions of nozzle blockage often occur, and the yield and quality of the continuous casting machine are seriously affected. After the two cold chamber nozzles are blocked in a large area, the steel flow of the casting blank core part can be deviated, and the formed primary green blank shell is uneven and molten steel flows outwards (steel leakage). Meanwhile, the blank is not uniformly cooled, so that the internal structure is not compact, columnar crystals are overdeveloped, and the quality of a casting blank is seriously affected in the process of forming a structure.
In the prior art, the method for detecting and cleaning the nozzle blockage mainly comprises the steps of entering a secondary cooling chamber by an operator, judging by naked eyes, and then disassembling, cleaning and reloading by using conventional tools such as a spanner. The method has low speed of processing the blocked nozzle, and often the blocked point is inaccurate, so that the nozzle cannot be really cleaned. And often two cold rooms operation environment is abominable, and the manual judgment clearance degree of difficulty is big, has unsafe factor many.
Disclosure of Invention
The embodiment of the application aims to provide a method for detecting a blocking point of a nozzle, a method for maintaining the nozzle and a device for detecting the blocking point of the nozzle, which can quickly and accurately find the blocking point of the nozzle, maintain the nozzle and enable the nozzle to be quickly recovered for use.
In a first aspect, an embodiment of the present application provides a method for detecting a nozzle plugging point, where the nozzle includes a nozzle body and a nozzle head, 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 communicated through an atomization channel, a sidewall of the nozzle body has two opposite screw holes, the two screw holes are respectively communicated with the atomization channel through the air hole and the water hole, and each screw hole is mounted with a screw.
The nozzle clogging point detection method includes:
Removing two screws from the side wall of the nozzle body exposes two screw holes, with a sound source provided in one of the screw holes to propagate sound waves through the air medium in the atomizing passage to the other screw hole.
When sound waves transmitted from the atomization channel are received in the other screw hole, if the attenuation of the sound waves is within a preset value, the blocking point is judged to be at the nozzle head.
And judging that the atomization channel is blocked when the other screw hole does not receive the sound wave transmitted by the atomization channel or the attenuation of the sound wave transmitted by the atomization channel is at or above a preset value.
In such implementations, the point of blockage of the nozzle is typically at the nozzle head and/or the atomizing passage by providing a sound source at one end of the atomizing passage, i.e., at one of the screw holes, to cause sound waves to propagate through the air medium within the atomizing passage to the other screw hole.
If the atomizing channel is not blocked or has little blockage, the sound wave can be transmitted smoothly, and then the sound wave with less attenuation can be received at the other end of the atomizing channel, namely at the other screw hole. At this time, it was judged that the atomizing passage was not clogged, but the nozzle head was clogged.
If the atomization channel is blocked or is blocked completely, the sound wave attenuates more in the propagation process, and then the sound wave cannot be received at the other end of the atomization channel, namely at the other screw hole, or the sound wave is received but attenuated more. At this time, it is judged that the atomizing passage is blocked.
The method for detecting the blocking point of the nozzle can quickly and accurately judge the blocking point, avoid the disassembly, assembly and replacement of the nozzle, reduce the labor intensity of workers and reduce the production cost of replacing the nozzle.
In one possible embodiment, the preset value is at 30%.
In one possible implementation, a sound source is provided in one of the screw holes so that 5-20 db of sound is transmitted to the other screw hole through the air medium in the atomization channel, when the sound transmitted from the atomization channel is received in the other screw hole, the blocking point is judged to be at the nozzle head, and when the sound transmitted from the atomization channel is not received in the other screw hole, the blocking of the atomization channel is judged.
In the above implementation, if the atomization channel is not blocked or has little blockage, the sound can be transmitted smoothly, the sound is attenuated less, the sound is hardly changed, the sound can be received in the other screw hole, if the atomization channel is blocked or has complete blockage, the sound is attenuated more to be hardly audible in the transmission process, and the sound cannot be received in the other screw hole.
In one possible embodiment, a stethoscope is placed in the other screw for listening to sound waves from the nebulization channel.
In the implementation process, the stethoscope can change the frequency and wavelength of sound and shield other sounds, so that a worker can clearly hear whether the atomizing channel transmits sound or not.
In a second aspect, an embodiment of the present application provides a method for maintaining a nozzle, including determining a blocking point of the nozzle by using the method for detecting a blocking point of the nozzle.
When the blocking point is at the nozzle head, the nozzle head is replaced.
When the atomizing channel is blocked, the atomizing channel is dredged.
In the implementation process, after the blocking point of the nozzle is detected by the method for detecting the blocking point of the nozzle, the blocking point is cleaned or accessories are replaced immediately, so that the nozzle can be recovered to be used as soon as possible.
In one possible embodiment, after the atomizing channel is blocked and the atomizing channel is unblocked, a sound source is provided in one of the screw holes to transmit 5-20 db sound waves to the other screw hole through the air medium in the atomizing channel.
When sound waves transmitted by the atomization channel are received by the other screw hole and the attenuation of the sound waves is within 5%, the atomization channel is judged to be dredged.
When the sound wave transmitted from the atomization channel is not received by the other screw hole or the attenuation of the sound wave transmitted from the atomization channel is 5% or more, continuing dredging the atomization channel until the sound wave transmitted from the atomization channel is received by the other screw hole and the attenuation of the sound wave is within 5%, and completing dredging.
In the implementation process, the application can also judge whether the atomization channel is dredged according to the attenuation quantity of the sound wave transmitted in the atomization channel until the blockage of the atomization channel is confirmed to be cleaned.
In one possible embodiment, when it is determined that the atomizing passage is clogged, the spray operation is performed using the nozzle after the atomizing passage is dredged, the nozzle is still clogged, and it is determined that the nozzle head is also clogged, and the nozzle head is replaced.
In the implementation process, the nozzle can be blocked by the atomizing channel and the nozzle head, and then whether the nozzle head is blocked is judged after the atomizing channel is dredged, and if the nozzle head is blocked, the nozzle head is replaced.
In a third aspect, an embodiment of the present application provides a nozzle maintenance device for the above-mentioned nozzle maintenance method, which includes a dredging mechanism and a base body, where the dredging 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 connected to the motor in a transmission manner, and the motor is installed on the base body.
In the implementation process, the nozzle maintenance device can dredge the atomizing channel through the rotation of the rotating needle head, so that the atomizing channel can be quickly dredged.
In one possible embodiment, the rotating needle body and the rotating needle head are hollow, the dredging mechanism further comprises a water bag, and a water outlet of the water bag is connected to the second end of the rotating needle body so that pressurized water can be sprayed out of the rotating needle head after passing through the rotating needle body.
In the implementation process, water sprayed from the rotating needle head can be used for flushing the blocking object, and the blocking object is flushed out of the atomization channel to the air hole or the water hole, so that the atomization channel is dredged.
In one possible embodiment, the nozzle maintenance device further comprises a sound emitting mechanism comprising a sound generator mounted to the base and a sound emitting tube connected to an output of the sound generator.
In the implementation process, the sounder is equivalent to a sound source, and the sound emitting tube can guide sound waves to one screw hole so that the sound waves can propagate to the other screw hole through an air medium in the atomization channel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a nozzle according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a nozzle maintenance device according to an embodiment of the present application;
Fig. 3 is a schematic structural view of a nozzle maintenance device according to an embodiment of the present application.
The icons comprise 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 body, 400-dredging mechanism, 410-needle rotating body, 420-needle rotating head, 430-motor, 440-needle rotating tube, 450-water bag, 500-sounding mechanism, 510-sounder, 520-sounding pipe and 600-button switch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those conventionally put in use in the application, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, and electrically connected. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The application provides a method for detecting a nozzle blocking point, which is used for quickly and accurately finding the blocking point of a nozzle.
Referring to fig. 1, the nozzle 10 includes a nozzle body 100 and a nozzle head 200, and the nozzle head 200 is mounted to the nozzle body 100.
The nozzle body 100 is provided with an air hole 101 and a water hole 102, the air hole 101 and the water hole 102 are mutually parallel and penetrate through the nozzle body 100, the water hole 102 and the middle part of the air hole 101 are communicated through an atomization channel 103, and the atomization channel 103 is used for atomizing water in the water hole 102 to form water mist and enter the air hole 101.
The side wall of the upper side of the air hole 101 and the side wall of the lower side of the water hole 102 are provided with two opposite screw holes 104, the two screw holes 104 are respectively communicated with the atomization passage 103 through the air hole 101 and the water hole 102, and each screw hole 104 is provided with a screw 110.
When the nozzle 10 fails, it is necessary to quickly and accurately find a clogged point, and to dredge the clogged point or replace one or more components so that it can be recovered for use as soon as possible.
The nozzle clogging point detecting 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 screw hole 104 to propagate sound waves through an air medium in the atomizing passage 103 to the other screw hole 104.
When the sound wave transmitted from the atomizing passage 103 is received in the other screw hole 104, if the attenuation of the sound wave is within a preset value, it is determined that the clogging point is at the nozzle head 200.
When the sound wave transmitted from the atomizing channel 103 is not received at the other screw hole 104 or the attenuation of the sound wave transmitted from the atomizing channel 103 is at or above a preset value, the atomizing channel 103 is judged to be blocked.
The blockage point of the nozzle 10 is typically at the nozzle head 200 and/or the atomizing channel 103, i.e. the blockage point of the nozzle 10 may be at the nozzle head 200, or at the atomizing channel 103, or at both the nozzle head 200 and the atomizing channel 103.
By providing a sound source at one end of the nebulization channel 103, i.e. at one of the screw holes 104, sound waves are propagated through the air medium in the nebulization channel 103 towards the other screw hole 104.
If the nebulization channel 103 is not blocked or has very few plugs, the sound waves can propagate unobstructed and thus less attenuated sound waves can be received at the other end of the nebulization channel 103, i.e. at the further screw hole 104. At this time, it is judged that the atomizing passage 103 is not clogged, but the nozzle head 200 is clogged.
If the atomizing channel 103 is blocked more or is blocked completely, the sound wave attenuates more in the propagation process, and then the sound wave cannot be received at the other end of the atomizing channel 103, namely at the other screw hole 104, or the sound wave is received but attenuated more. At this time, it is judged that the atomizing passage 103 is clogged.
The preset value is determined according to factors such as the length of the atomizing passage 103 of the nozzle 10 and the intensity of the ultrasonic wave.
Alternatively, the preset value is 30%.
When the sound wave transmitted from the atomizing passage 103 is received in the other screw hole 104, if the attenuation of the sound wave is within 30%, it is judged that the clogging point is at the nozzle head 200.
When the attenuation of the sound wave which is not received from the atomizing passage 103 or the sound wave which is received from the atomizing passage 103 is 30% or more at the other screw hole 104, it is judged that the atomizing passage 103 is clogged.
In general, if the nebulization channel 103 is not blocked, the propagation of the sound wave is not substantially interfered, the attenuation of the sound wave is very small, generally within 10% or even within 5%, and if the nebulization channel 103 is blocked, the propagation of the sound wave is greatly hindered, so that the attenuation of the sound wave is more than 80%, even more than 90%.
It should be noted that, when the other screw hole 104 receives the sound wave, it may be directly heard whether the sound is transmitted from the atomizing channel 103 or received by a professional sound wave receiver.
The application provides a specific detection method, which comprises the steps of providing a sound source at one screw hole 104 to enable sound of 5-20 dB to be transmitted to the other screw hole 104 through an air medium in an atomization channel 103, judging that a blocking point is at a nozzle head 200 when the sound transmitted from the atomization channel 103 is received at the other screw hole 104, and judging that the atomization channel 103 is blocked when the sound transmitted from the atomization channel 103 is not received at the other screw hole 104.
When the intensity of the sound emitted in one of the screw holes 104 is low, if the atomizing passage 103 is not blocked or has little blockage, the sound can be transmitted smoothly, the sound attenuation is less, the sound is hardly changed, the sound can be received in the other screw hole 104, and if the atomizing passage 103 is blocked more or completely, the sound is attenuated more to be hardly audible in the transmission process, and the sound cannot be received in the other screw hole 104.
Optionally, a stethoscope is placed in the other screw hole 104 for listening to sound waves transmitted from the nebulization channel 103.
The stethoscope can change the frequency and wavelength of sound and shield other sounds so that a worker can clearly hear whether the atomizing channel 103 has transmitted sound.
The application provides a nozzle maintenance method, which comprises the steps of judging the blocking point of a nozzle 10 by adopting the method for detecting the blocking point of the nozzle, and dredging or replacing a component according to the judged blocking point.
When the plugging point is at the nozzle head 200, the nozzle head 200 is replaced.
When the atomizing passage 103 is blocked, the atomizing passage 103 is unblocked.
After the blocking point of the nozzle 10 is detected by the method for detecting the blocking point of the nozzle, the blocking point is cleaned or accessories are replaced, so that the nozzle 10 can be quickly recovered.
Judging whether the nozzle 10 dredges the atomization passage 103 after the nozzle clogging point is positioned in the atomization passage 103 by the nozzle clogging point detection method, and judging whether the atomization passage 103 is dredged by adopting the following method:
a sound source is provided in one of the screw holes 104 to transmit sound waves of 5-20 db through the air medium in the atomizing passage 103 to the other screw hole 104.
When the sound wave transmitted by the atomizing channel 103 is received by the other screw hole 104 and the attenuation of the sound wave is within 5%, the atomizing channel 103 is judged to be dredged.
When the sound wave transmitted from the atomizing channel 103 is not received at the other screw hole 104 or the attenuation of the sound wave transmitted from the atomizing channel 103 is 5% or more, continuing to dredge the atomizing channel 103 until the sound wave transmitted from the atomizing channel 103 is received at the other screw hole 104 and the attenuation of the sound wave is within 5%, and completing dredging.
The method can judge whether the atomization channel 103 is dredged according to the attenuation of the sound wave when the sound wave propagates in the atomization channel 103 until the blockage of the atomization channel 103 is confirmed to be cleaned.
If the nebulization channel 103 is only partly unblocked, this may result in the nebulization channel 103 being more easily blocked next time.
When it is judged that the atomizing passage 103 is blocked, after the atomizing passage 103 is dredged, the spray operation is performed by using the nozzle 10, and the nozzle 10 is still blocked. I.e. the nozzle 10 may be clogged both with the atomizing channel 103 and with the nozzle head 200, and the nozzle head 200 also needs to be replaced.
Referring to fig. 2 and 3, the present application further provides a nozzle maintenance device 20 for the above-mentioned nozzle maintenance method, which includes a base 300 and a dredging mechanism 400.
The dredging mechanism 400 comprises a rotating needle body 410, a rotating needle head 420 and a motor 430, wherein the rotating needle body 410 is provided with a first end and a second end, the rotating needle head 420 is arranged at the first end of the rotating needle body 410, the second end of the rotating needle body 410 is connected with the motor 430 in a transmission manner, and the motor 430 is arranged on the base 300.
The motor 430 is used for driving the rotating needle body 410 to rotate, and further driving the rotating needle head 420 mounted at the end of the rotating needle body 410 to rotate, and the rotating needle is equivalent to a drill bit, and can be used for drilling the atomization channel 103, so that the plug is separated from the inner wall of the atomization channel 103, and the atomization channel 103 is quickly dredged.
The dredging mechanism 400 further comprises a rotating needle tube 440, wherein the rotating needle tube 440 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.
The rotating needle body 410 and the rotating needle head 420 are hollow, the dredging mechanism 400 further comprises a water bag 450, the water bag 450 is installed on the upper side of the rotating needle tube 440 and is supported by the rotating needle tube 440, and a water outlet of the water bag 450 is connected to the second end of the rotating needle body 410 so that pressurized water can be sprayed out of the rotating needle head 420 after passing through the rotating needle body 410.
The water sprayed from the rotating needle 420 can be used for flushing the blockage, and the blockage is flushed out of the atomization passage 103 into the air hole 101 or the water hole 102, so that the atomization passage 103 is dredged.
The nozzle maintenance device 20 further includes a sound generating mechanism 500, where the sound generating mechanism 500 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 an output end of the sound generator 510.
The sound generator 510 corresponds to a sound source, and the sound tube 520 is capable of directing sound waves at one of the screw holes 104 so that the sound waves propagate through the air medium in the nebulization channel 103 to the other screw hole 104.
In the embodiment shown in fig. 2 and 3, since the dredging mechanism 400 and the sounding mechanism 500 are separately used, the rotating needle tube 440 and the sounding tube 520 extend in opposite directions, so that the dredging mechanism 400 or the sounding mechanism 500 is not disturbed by the other mechanism when in use.
The nozzle maintenance device 20 further includes two push-button switches 600, and the two push-button switches 600 are respectively connected to the motor 430 and the sounder 510, and are respectively used for controlling the switching of the motor 430 and the sounder 510.
When the nozzle maintenance device 20 is adopted to carry out the nozzle maintenance method, the sound emitting tube 520 of the nozzle maintenance device 20 is extended into one screw hole 104, the button switch 600 for controlling the sound generator 510 is pressed to enable the sound generator 510 to start sounding, and the stethoscope is placed in the other screw hole 104 to monitor sound waves transmitted from the atomizing channel 103.
When the sound wave transmitted from the atomizing passage 103 is received in the other screw hole 104, if the attenuation of the sound wave is within 30%, it is judged that the clogging point is at the nozzle head 200, and the nozzle head 200 is replaced at this time.
When the attenuation of the sound wave which is not received from the atomizing passage 103 or the sound wave which is received from the atomizing passage 103 is 30% or more at the other screw hole 104, it is judged that the atomizing passage 103 is clogged.
At this time, the button switch 600 for controlling the sounder 510 is pressed to stop sounding the sounder 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 rotating the rotating needle head 420, the rotating needle head 420 is extended into the atomizing channel 103, and the blocking point is cleaned. Meanwhile, water is filled in the water bag 450, so that the water is sprayed out of the hole of the rotating needle 420 after being pressurized, the blockage rotated out of the rotating needle 420 is washed out, and the rotating needle 420 is stopped by pressing the button switch 600 of the control motor 430.
Checking whether the atomizing channel 103 is completely dredged, rotating the nozzle maintenance device 20 to enable the sound tube 520 to extend into one of the screw holes 104, pressing a button switch 600 for controlling the sound generator 510 to enable the sound generator 510 to start sounding, placing a stethoscope in the other screw hole 104 for monitoring sound waves transmitted from the atomizing channel 103, and continuing to dredge the atomizing channel 103 by adopting the rotating needle head 420 until sound waves transmitted from the atomizing channel 103 are received in the other screw hole 104 and the attenuation of the sound waves is within 5% if the sound waves transmitted from the atomizing channel 103 are not received in the other screw hole 104 or the attenuation of the sound waves transmitted from the atomizing channel 103 is above 5%.
In summary, the method for detecting the blocking point of the nozzle according to the embodiments of the present application can quickly and accurately determine the blocking point, avoid disassembly and replacement of the nozzle 10, reduce labor intensity of staff, and reduce production cost of replacing the nozzle 10. After detecting the blocking point of the nozzle 10 by the nozzle blocking point detection method, cleaning or replacing accessories are carried out on the blocking point, so that the nozzle 10 can be quickly recovered for use. The nozzle maintenance device 20 can unblock the atomizing passage 103 by rotating the rotating needle head 420, thereby realizing rapid unblocking of the atomizing passage 103.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (3)
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