Dust removal structure for underground window cover of coal mine
By integrating the sonic vibration and blowing mechanism, efficient automatic dust removal is achieved for the window cover of underground coal mine monitoring instruments, solving the problem of unsatisfactory dust removal effect in the existing technology and being suitable for window covers of various shapes.
Patent Information
- Application Number
- CN202423254643.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-28
AI Technical Summary
The dust removal method of the existing window cover of coal mine underground monitoring instruments is not ideal. There are problems such as easy failure of the mechanical structure, short effective time of the nano-hydrophobic layer, and scratches on the window surface caused by the erasing method.
It adopts an integrated sonic vibration mechanism and a purge mechanism. The sonic vibration mechanism includes ultrasonic and ordinary sonic vibration units that work alternately to generate resonance to separate dust. The purge mechanism cleans the window cover by blowing an air curtain.
It realizes efficient automatic dust removal, reduces dust accumulation, extends service life, is not affected by dusty environments, and is suitable for window covers of different shapes.
Smart Images
Figure CN223475810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mining equipment technology, specifically to a dust removal structure for a viewing window cover in a coal mine. Background Technology
[0002] The mining and tunneling processes in coal mines generate a large amount of dust. During ventilation and water spraying for dust suppression, coal particles and dust fall and adhere to the surfaces of the viewing windows of underground monitoring instruments such as laser rangefinders, millimeter-wave radars, and cameras. Over time, this accumulation can obstruct light, preventing the monitoring instruments from measuring and monitoring properly. Regular manual cleaning would be extremely labor-intensive. Existing automatic dust prevention and removal mechanisms mainly employ three methods:
[0003] The first type is passive protection, which uses a mechanical cover to shield the monitoring instrument. When the instrument is measuring and monitoring, the mechanical cover is opened using an electric mechanism, and then closed again after the instrument has completed its monitoring work. The disadvantage is that the mechanical structure is prone to failure in dusty environments, and dust can still obscure the viewing window for a short period of time after the mechanical cover is opened.
[0004] The second method involves coating the surface of the viewing window with a nano-hydrophobic layer to reduce dust adhesion, thus preventing dust from sticking. The drawback is that this treatment is only effective for a short time, and dust accumulation cannot be completely eliminated after prolonged use.
[0005] The third method is mechanical wiping, similar to a windshield wiper. The disadvantage is that long-term use will scratch the surface of the window, affecting the light transmission of the window cover. Moreover, this dust removal method is only suitable for relatively flat windows and cannot effectively clean spherical or hemispherical window covers. Summary of the Invention
[0006] To address the problems in existing technologies, this utility model patent designs a dust removal structure for underground coal mine viewing windows, thereby solving the problem that the application effect of existing dust removal methods is not ideal.
[0007] The technical solution adopted by this utility model is as follows: the dust removal structure is integrated into the underground monitoring instrument, including a controller, an acoustic vibration mechanism and a purging mechanism. The controller is electrically connected to the acoustic vibration mechanism and the purging mechanism. The acoustic vibration mechanism is mechanically connected from the inside to the viewing window of the underground monitoring instrument. The air outlet of the purging mechanism is located on the upper outer side of the viewing window.
[0008] Furthermore, the acoustic vibration mechanism includes an ultrasonic generator, an ultrasonic transducer, and a first dust removal arm. The ultrasonic generator is electrically connected to the controller and the ultrasonic transducer, and the ultrasonic transducer is connected to the viewing window cover through the first dust removal arm.
[0009] Furthermore, the acoustic vibration mechanism also includes an acoustic power amplifier, an acoustic oscillator, and a second dust removal arm. The acoustic power amplifier is electrically connected to the controller and the acoustic oscillator, and the acoustic oscillator is connected to the viewing window cover through the second dust removal arm.
[0010] Furthermore, the purging mechanism includes a bellows and a blower. The blower is installed on the air inlet pipe of the bellows, and the air outlet pipe of the bellows extends from the top front end of the housing of the underground monitoring instrument and is connected to a purging air curtain. The air outlet of the purging air curtain faces the viewing window cover.
[0011] Furthermore, the air inlet of the air box is located below the housing of the underground monitoring instrument, and a filter is installed at the air inlet.
[0012] Compared to existing technologies, the advancement of this utility model patent's design for a dust removal structure for underground coal mine sight hoods lies in the following: the dust removal structure is equipped with an acoustic vibration mechanism, which includes an ultrasonic vibration unit (vibration frequency 15k~30kHz) and a conventional acoustic vibration unit (vibration frequency 500Hz-15kHz). These two types of acoustic vibration units work alternately, generating different vibration frequencies that resonate with dust particles of varying sizes (10μm to 1mm) falling onto the sight hood, causing the dust particles to detach from the sight hood surface. Simultaneously, the control board controls the vibration units to alternately generate sine waves, triangular waves, square waves, and other waveforms with varying intensities to enhance the dust removal effect. The dust removal structure is also equipped with a blowing mechanism, where a blowing air curtain located above the sight hood blows air onto the sight hood, removing the dislodged dust particles and completing the cleaning process. The acoustic vibration mechanism and the blowing mechanism are automatically activated periodically by a controller, resulting in excellent cleaning performance, immunity to dusty environments, and a long service life. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the dust removal structure of the underground viewing window cover in a coal mine.
[0014] In the diagram, 1 is the underground monitoring instrument, 2 is the controller, 3 is the ultrasonic generator, 4 is the ultrasonic transducer, 5 is the first dust removal arm, 6 is the acoustic power amplifier, 7 is the acoustic oscillator, 8 is the second dust removal arm, 9 is the bellows, 10 is the purge curtain, and 11 is the viewing window cover. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0016] like Figure 1 As shown, this utility model patent designs an embodiment of a dust removal structure for an underground coal mine viewing window cover. In this embodiment, the dust removal structure includes a controller 2, an acoustic vibration mechanism, and a purging mechanism. The entire dust removal structure is installed within the underground monitoring instrument 1 that requires dust removal. The controller 2 can be integrated into the control board of the underground monitoring instrument 1 and is electrically connected to the acoustic vibration mechanism and the purging mechanism. The controller 2 can use existing technology products and controls the timed activation of the acoustic vibration mechanism and the purging mechanism.
[0017] The acoustic vibration mechanism comprises two functional units: an ultrasonic vibration unit and a conventional acoustic vibration unit. The ultrasonic vibration unit includes an ultrasonic generator 3, an ultrasonic transducer 4, and a first dust removal arm 5. The ultrasonic generator 3 is electrically connected to a controller 2 and the ultrasonic transducer 4. The ultrasonic transducer 4 is connected to the viewing window 11 of the underground monitoring instrument 1 via the first dust removal arm 5, transmitting the vibration generated by the ultrasonic vibration unit to the viewing window 1. The conventional acoustic vibration unit includes an acoustic power amplifier 6, an acoustic oscillator 7, and a second dust removal arm 8. The acoustic power amplifier 6 is electrically connected to the controller 2 and the acoustic oscillator 7. The acoustic oscillator 7 is connected to the viewing window 11 via the second dust removal arm 8, transmitting the vibration generated by the conventional acoustic vibration unit to the viewing window 1. The controller 2 uses logic to alternately activate the ultrasonic vibration unit and the conventional acoustic vibration unit.
[0018] The purging mechanism includes a bellows 9 and a blower. The blower 9 is installed on the air inlet duct of the bellows and is electrically connected to the controller 2. The controller 2 controls the blower 9 to start synchronously with the acoustic vibration mechanism. The air outlet duct of the bellows 9 extends from the top front end of the housing of the underground monitoring instrument 1 and is connected to a purging air curtain 10. The air outlet of the purging air curtain 10 faces the viewing window 11, creating airflow onto the viewing window 11. The air inlet of the bellows 9 is located at the bottom of the housing of the underground monitoring instrument to reduce the amount of dust entering the air. A filter is installed at the air inlet to filter the incoming air and ensure the cleanliness of the purging air.
[0019] When the dust removal structure of the underground viewing window disclosed in this utility model patent is applied, the controller 2 periodically controls the ultrasonic vibration unit and the ordinary acoustic vibration unit to be turned on alternately, so as to generate vibrations of different frequencies on the viewing window. At the same time, the blower 9 of the blowing mechanism is turned on synchronously to blow air on the viewing window to ensure the dust removal effect.
[0020] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the present invention.
Claims
1. A dust removal structure for a sight glass cover in a coal mine, characterized in that, The dust removal structure is integrated into the underground monitoring instrument and includes a controller, an acoustic vibration mechanism, and a purging mechanism. The controller is electrically connected to the acoustic vibration mechanism and the purging mechanism. The acoustic vibration mechanism is mechanically connected from the inside to the viewing window of the underground monitoring instrument. The air outlet of the purging mechanism is located on the upper outer side of the viewing window.
2. The dust removal structure for an underground coal mine sight glass cover according to claim 1, characterized in that, The acoustic vibration mechanism includes an ultrasonic generator, an ultrasonic transducer, and a first dust removal arm. The ultrasonic generator is electrically connected to the controller and the ultrasonic transducer, and the ultrasonic transducer is connected to the viewing window cover through the first dust removal arm.
3. The dust removal structure for an underground coal mine sight glass cover according to claim 2, characterized in that, The acoustic vibration mechanism further includes an acoustic power amplifier, an acoustic oscillator, and a second dust removal arm. The acoustic power amplifier is electrically connected to the controller and the acoustic oscillator, and the acoustic oscillator is connected to the viewing window cover through the second dust removal arm.
4. The dust removal structure for an underground coal mine sight glass cover according to claim 3, characterized in that, The purging mechanism includes a bellows and a blower. The blower is installed on the air inlet pipe of the bellows. The air outlet pipe of the bellows extends from the top front end of the housing of the underground monitoring instrument and is connected to a purging air curtain. The air outlet of the purging air curtain faces the viewing window cover.
5. The dust removal structure for an underground coal mine sight glass cover according to claim 4, characterized in that, The air inlet of the air box is located below the housing of the underground monitoring instrument, and a filter is installed at the air inlet.