Dustproof mask for mine tunneling work

Abstract

The invention belongs to the technical field of dustproof masks, and discloses a dustproof mask for mine tunneling work, which comprises a mask body, and a filter assembly and a sound transmission assembly arranged on the mask body, and the filter assembly and the sound transmission assembly are mounted on the mask body; the adjusting assembly is arranged on the sound transmission assembly; the sound transmission assembly comprises a connecting cylinder fixedly connected to the mask body, and one end of the connecting cylinder is fixedly connected with a first connecting ring. According to the scheme, when an operator speaks, sound waves are collected through the sound insulation cover and enter the sound transmission barrel, the film cannot isolate sound, so that the sound waves can vibrate the film and transmit the vibration to the sound amplification cover, and then the sound waves are amplified through the loudspeaker of the sound amplification cover and then spread to the outside; meanwhile, due to the fact that communication of the two sides of the mask body is integrally isolated through the sound transmission assembly, it is guaranteed that the mask body has the good protection effect and meanwhile has the good sound transmission effect, and communication is facilitated when an operator wears the mask body.

Description

Technical Field

[0001] The invention belongs to the technical field of dust masks, in particular to a dust mask used for mine excavation work. Background Art

[0002] Mining excavation operations usually include ore mining, crushing, transportation and other links. These processes will generate a large amount of dust particles. Therefore, operators often need to wear dust masks when working in such an environment. The dust mask isolates a closed cavity in front of the operator's mouth and nose through the mask body. A filter component connected to the outside world is set on the mask to filter the tiny particles in the operator's inhaled gas. At the same time, the filter component can also be used to discharge people's exhaled gas, thereby ensuring that the operator can work normally in a mining environment containing a large amount of dust particles. However, since the dust mask blocks the operator's mouth and nose, and since the mask material is generally composed of multiple materials stacked, it usually has a good sound insulation effect. This will cause the operator to isolate the sound of his speech when wearing the dust mask to work, especially in a noisy environment such as a mine, the impact on the operator's communication through speaking is more obvious. Therefore, in order to solve the above problems, a dust mask for mining excavation work is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a dust mask for mine excavation work, which solves the problem that the dust mask in the mining environment may affect the operator's communication through speaking.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dust mask for mining excavation work, comprising a mask body and a filter assembly arranged on the mask body, a sound transmission assembly, which is installed on the mask body; an adjustment assembly, which is arranged on the sound transmission assembly;

[0005] The sound transmission component comprises a connecting tube fixedly connected to the mask body, one end of the connecting tube is fixedly connected to a connecting ring 1, a sound amplifying cover is fixedly connected to the connecting ring 1, a sound insulation cover is fixedly connected to the inside of the sound amplifying cover, and a sound transmission tube is fixedly connected to the sound insulation cover;

[0006] One end of the sound transmission tube is spherical and in contact with the outside, and the other end of the sound transmission tube is connected to the inner side of the mask body. The sound amplifying cover is horn-shaped as a whole, and the spherical part of the sound transmission tube is located in the horn-shaped part of the sound amplifying cover;

[0007] Both ends of the sound insulation cover are trumpet-shaped, and the spherical part of the sound transmission tube is in contact with the trumpet-shaped part of the end of the sound insulation cover away from the sound amplification cover.

[0008] Preferably, sound-absorbing cotton is arranged between the inner wall of the sound amplification cover and the outer wall of the sound insulation cover.

[0009] Preferably, the spherical part of the sound transmission tube is provided with circular holes in an annular array, and a film is provided on the circular holes to isolate the outside from the sound transmission tube cavity.

[0010] Preferably, the adjustment component includes a connecting ring 2 movably connected to the inside of the connecting tube, a tension spring is fixedly connected between the connecting ring 2 and the connecting ring 1, and in an initial state, the connecting ring 2 is abutted against one end of the connecting ring 1 under the tension of the tension spring, and an elastic sheet is movably connected to the outer circumferential array of the sound amplification cover, and the elastic sheet is fixedly connected to the connecting ring 2 toward the middle side of the connecting ring 2, and a fixed pressure ring is fixedly connected to the end of the outside of the sound amplification cover away from the connecting ring 1, and the parts of the elastic sheet located at the two ends of the connecting ring 2 are also respectively abutted against the inner walls of the connecting ring 1 and the fixed pressure ring, and a rubber sound insulation felt is also fixedly connected to the end of the connecting tube and the fixed pressure ring away from the connecting ring 1, and initially, the end of the elastic sheet away from the connecting ring 1 passes through the connecting tube and extends to the inside of the rubber sound insulation felt to support the rubber sound insulation felt.

[0011] Preferably, the adjustment assembly further comprises an adjustment ring whose bearing is connected to the inner wall of the connecting tube, and the end of the adjustment ring close to the rubber sound insulation felt extends to the outside of the connecting tube;

[0012] The outer circumferential array of the second connecting ring is provided with guide grooves, and the circumferential array of the inner wall of the adjusting ring is fixedly connected with a convex shaft that can slide in the second connecting ring.

[0013] Preferably, a groove is provided on the elastic sheet located between the sound amplification cover and the fixed pressure ring, and one end of the elastic sheet located inside the rubber sound insulation felt is also fixedly connected to an elastic connector, and the other end of the elastic connector is connected to the rubber sound insulation felt;

[0014] In the initial state, the elastic sheet located at one end of the groove close to the rubber sound insulation felt abuts against the inner wall of the connecting tube and makes the elastic sheet have a tendency to bend inwards.

[0015] Preferably, corrugated grooves are provided on both sides of the inner wall of the guide groove, and the diameter of the corrugated grooves is greater than the diameter of the convex shaft.

[0016] Preferably, the rubber sound insulation felt is also provided with connecting pins in a circumferential array between two adjacent elastic sheets.

[0017] Preferably, one end of the elastic sheet located inside the rubber sound insulation felt is elastically hinged with a group of symmetrical elastic connecting rods;

[0018] In the initial state, the elastic connecting rod is abutted by the inner wall of the connecting tube and shrinks into the elastic sheet.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The above scheme collects sound waves through the soundproof cover and enters the sound transmission tube when the operator speaks. Since the film does not isolate the sound, the sound waves will cause the film to vibrate and propagate to the sound amplifier cover. Then the sound waves will be amplified by the speaker of the sound amplifier cover and diffused to the outside world. At the same time, since the sound transmission component as a whole isolates the connection between the two sides of the mask body, it ensures that the mask body has a good protective effect and a good sound transmission effect, thereby facilitating the communication of the operator when wearing the mask body.

[0021] In the above scheme, the operator rotates the adjusting ring to make the convex shaft slide in the guide groove, thereby forcing the second connecting ring to move away from the first connecting ring. At this time, the tension spring will be stretched, and the second connecting ring will also drive the elastic sheet to move, thereby making the groove separate from the inside of the connecting tube. At this time, one end of the elastic sheet located inside the rubber sound insulation felt will be restored to a horizontal state by its own elastic force, and will be driven to shrink toward the middle, thereby ensuring that the sound waves can be more concentrated after being transmitted through the rubber sound insulation felt. Therefore, when the operators are far away, the rubber sound insulation felt can still play a good sound transmission effect, which is convenient for people to communicate.

[0022] During the process of the above-mentioned scheme detaching from the connecting tube through the groove, the inner wall of the connecting tube will also release the squeezing on the elastic connecting rod, so that the elastic connecting rod will spring outward under the action of its own elastic force and support the rubber sound insulation felt and keep the rubber sound insulation felt in a tensioned state, thereby avoiding the situation where wrinkles will appear on the rubber sound insulation felt when one end of the elastic sheet located in the rubber sound insulation felt returns to a horizontal state, thereby reducing the sound transmission effect of the rubber sound insulation felt. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a side cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0027] Figure 5 It is a structural schematic diagram of the regulating assembly of the present invention;

[0028] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0029] Figure 7 It is a partial cross-sectional structural schematic diagram of the rubber sound insulation felt of the present invention;

[0030] Figure 8for Figure 7 The enlarged view of point D in the middle;

[0031] Fig. 9 for Figure 7 Enlarged view of point E in the middle;

[0032] Fig.10 It is a schematic structural diagram of the elastic connecting rod of the present invention.

[0033] In the figure: 1. mask body; 11. filter assembly; 2. sound transmission assembly; 21. connecting tube; 22. connecting ring 1; 23. sound amplification cover; 24. sound insulation cover; 241. sound absorbing cotton; 25. sound transmission tube; 251. film; 3. adjustment assembly; 31. connecting ring 2; 311. guide groove; 312. corrugated groove; 32. adjustment ring; 321. convex shaft; 33. elastic sheet; 331. groove; 332. elastic connector; 333. elastic connecting rod; 34. rubber sound insulation felt; 341. connecting nail; 35. fixed pressure ring; 36. tension spring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 10 As shown, the present invention provides a dust mask for mining excavation work, comprising a mask body 1 and a filter assembly 11 arranged on the mask body 1: a sound transmission assembly 2, which is installed on the mask body 1; an adjustment assembly 3, which is arranged on the sound transmission assembly 2;

[0036] The sound transmission component 2 includes a connecting tube 21 fixedly connected to the mask body 1, one end of the connecting tube 21 is fixedly connected to a connecting ring 22, a sound amplifying cover 23 is fixedly connected to the connecting ring 22, a sound insulation cover 24 is fixedly connected to the sound amplifying cover 23, and a sound transmission tube 25 is fixedly connected to the sound insulation cover 24;

[0037] One end of the sound tube 25 is spherical and in contact with the outside, and the other end of the sound tube 25 is connected to the inner side of the mask body 1. The sound amplifying cover 23 is horn-shaped as a whole, and the spherical part of the sound tube 25 is located in the horn-shaped part of the sound amplifying cover 23;

[0038] Both ends of the soundproof cover 24 are horn-shaped, and the spherical part of the sound transmission tube 25 is in contact with the horn-shaped part of the end of the soundproof cover 24 away from the sound amplification cover 23;

[0039] A sound-absorbing cotton 241 is arranged between the inner wall of the sound-amplifying cover 23 and the outer wall of the sound-isolating cover 24;

[0040] The spherical part of the sound transmission tube 25 is provided with circular holes in an annular array, and a film 251 is provided on the circular holes to isolate the outside from the cavity of the sound transmission tube 25;

[0041] By adopting the above scheme, when the operator speaks, the sound waves are collected through the soundproof cover 24 and enter the sound transmission tube 25. Since the film 251 does not isolate the sound, the sound waves will cause the film 251 to vibrate and propagate to the sound amplifier cover 23. Then, the sound waves will be amplified by the speaker of the sound amplifier cover 23 and diffused to the outside. At the same time, since the sound transmission component 2 as a whole isolates the connection between the two sides of the mask body 1, it is ensured that the mask body 1 has a good protective effect and a good sound transmission effect, thereby facilitating the communication of the operator when wearing the mask body 1.

[0042] It is worth mentioning that: through the design of the film 251, it can isolate the external dust-containing gas from entering the sound tube 25 through the circular hole. At the same time, the film 251 can also make the sound transmitted through the film 251 sharper and more penetrating, thereby avoiding the situation where the sound waves will appear dull in the sound tube 25 and cause the penetration to be reduced.

[0043] like Figure 2-Figure 5 , Figure 7 , Fig. 9 and Fig.10 As shown, the adjustment component 3 includes a second connecting ring 31 movably connected to the inside of the connecting tube 21, and a tension spring 36 is fixedly connected between the second connecting ring 31 and the first connecting ring 22. In the initial state, the second connecting ring 31 is abutted against one end of the connecting ring 22 by the tension of the tension spring 36. The outer circumferential array of the sound amplifying cover 23 is movably connected with an elastic sheet 33, and the elastic sheet 33 is fixedly connected to the second connecting ring 31 toward the middle side of the second connecting ring 31. A fixed pressure ring 35 is fixedly connected to the end of the sound amplifying cover 23 away from the first connecting ring 22. The parts of the elastic sheet 33 located at the two ends of the second connecting ring 31 are also abutted against the inner walls of the first connecting ring 22 and the fixed pressure ring 35 respectively. The end of the connecting tube 21 and the fixed pressure ring 35 away from the connecting ring 22 is also fixedly connected with a rubber sound insulation felt 34. Initially, the end of the elastic sheet 33 away from the connecting ring 22 passes through the connecting tube 21 and extends to the inside of the rubber sound insulation felt 34 to support the rubber sound insulation felt 34.

[0044] With the above solution, after the sound waves are amplified by the speaker of the sound amplifier 23, they will pass through the rubber sound insulation felt 34 and be amplified again, thereby increasing the volume of the operator's voice and facilitating communication between people.

[0045] like Figure 1-Figure 10 As shown, the adjustment assembly 3 also includes an adjustment ring 32 whose bearing is connected to the inner wall of the connecting tube 21, and one end of the adjustment ring 32 close to the rubber sound insulation felt 34 extends to the outside of the connecting tube 21;

[0046] The outer circumferential array of the connecting ring 31 is provided with guide grooves 311, and the inner circumferential array of the adjusting ring 32 is fixedly provided with convex shafts 321 which can slide in the connecting ring 31;

[0047] A groove 331 is formed on the elastic sheet 33 between the sound amplification cover 23 and the fixed pressure ring 35. An elastic connector 332 is fixedly connected to one end of the elastic sheet 33 located inside the rubber sound insulation felt 34. The other end of the elastic connector 332 is connected to the rubber sound insulation felt 34.

[0048] In the initial state, the elastic sheet 33 located at one end of the groove 331 close to the rubber sound insulation felt 34 abuts against the inner wall of the connecting tube 21 and makes the elastic sheet 33 have a tendency to bend inwards;

[0049] By adopting the above scheme, the operator rotates the adjusting ring 32 to make the convex shaft 321 slide in the guide groove 311, thereby forcing the connecting ring 2 31 to move away from the connecting ring 1 22. At this time, the tension spring 36 will be stretched, and the connecting ring 2 31 will also drive the elastic sheet 33 to move, thereby making the groove 331 disengage from the inside of the connecting tube 21. At this time, one end of the elastic sheet 33 located inside the rubber sound insulation felt 34 will be restored to a horizontal state due to its own elastic force, and drive the rubber sound insulation felt 34 to shrink toward the middle, thereby ensuring that the sound waves can be more concentrated after being transmitted through the rubber sound insulation felt 34. Therefore, when the operators are far away from each other, the rubber sound insulation felt 34 can still achieve a good sound transmission effect, which is convenient for people to communicate.

[0050] like Figure 3-Figure 5 and Figure 7-10 As shown, the inner walls of the guide groove 311 are provided with corrugated grooves 312 on both sides, and the diameter of the corrugated grooves 312 is larger than the diameter of the convex shaft 321;

[0051] The rubber sound insulation felt 34 is also provided with connecting nails 341 in a circumferential array between two adjacent elastic sheets 33;

[0052] A set of symmetrical elastic connecting rods 333 are elastically hinged at one end of the elastic sheet 33 located inside the rubber sound insulation felt 34; in the initial state, the elastic connecting rods 333 are abutted against the inner wall of the connecting tube 21 and shrink into the elastic sheet 33;

[0053] By adopting the above scheme, during the process of detaching from the connecting tube 21 through the groove 331, the inner wall of the connecting tube 21 will also release the squeezing of the elastic connecting rod 333, so that the elastic connecting rod 333 will spring outward under the action of its own elastic force and support the rubber sound insulation felt 34 and keep the rubber sound insulation felt 34 in a tensioned state, thereby avoiding the situation where wrinkles will appear on the rubber sound insulation felt 34 when one end of the elastic sheet 33 located in the rubber sound insulation felt 34 returns to a horizontal state, thereby reducing the sound transmission effect of the rubber sound insulation felt 34.

[0054] The working principle and use process of the present invention:

[0055] First, the operator wears the mask body 1. When the operator speaks, the sound waves will be collected by the sound insulation cover 24 and enter the sound transmission tube 25. Since the film 251 does not isolate the sound, the sound waves will cause the film 251 to vibrate and propagate to the sound amplifier cover 23. Then, the sound waves will be amplified by the speaker of the sound amplifier cover 23 and diffused to the outside. At the same time, since the sound transmission component 2 as a whole isolates the connection between the two sides of the mask body 1, it ensures that the mask body 1 has a good protective effect and a good sound transmission effect, thereby facilitating the operator's communication when wearing the mask body 1.

[0056] After the sound waves are amplified by the speaker of the sound amplifying cover 23, they will pass through the rubber sound insulation felt 34 and be amplified again, thereby increasing the volume of the operator's voice, thereby facilitating people's communication;

[0057] When the persons who need to communicate are far away from each other, the operator rotates the adjusting ring 32 to make the convex shaft 321 slide in the guide groove 311, thereby forcing the second connecting ring 31 to move away from the first connecting ring 22. At this time, the tension spring 36 will be stretched, and the second connecting ring 31 will also drive the elastic sheet 33 to move, thereby making the groove 331 separate from the inside of the connecting tube 21. At this time, the end of the elastic sheet 33 located inside the rubber sound insulation felt 34 will be restored to a horizontal state by its own elastic force, and drive the rubber sound insulation felt 34 to shrink inward, thereby ensuring that the sound waves can be more concentrated after being transmitted through the rubber sound insulation felt 34.

[0058] When the groove 331 is separated from the connecting tube 21, the inner wall of the connecting tube 21 will also release the squeezing on the elastic connecting rod 333, so that the elastic connecting rod 333 will spring outward under the action of its own elastic force and support the rubber sound insulation felt 34 and keep the rubber sound insulation felt 34 in a tensioned state, thereby preventing the rubber sound insulation felt 34 from having wrinkles and stacking when one end of the elastic sheet 33 located in the rubber sound insulation felt 34 returns to a horizontal state, thereby preventing the rubber sound insulation felt 34 from having its sound transmission effect reduced.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust mask for use in mining excavation work, comprising a mask body (1) and a filter assembly (11) arranged on the mask body (1), characterized in that: A sound transmission component (2) mounted on the mask body (1); An adjustment component (3) disposed on the sound transmission component (2); The sound transmission component (2) comprises a connecting tube (21) fixedly connected to the mask body (1), one end of the connecting tube (21) is fixedly connected to a connecting ring 1 (22), a sound amplifying cover (23) is fixedly connected to the connecting ring 1 (22), a sound insulation cover (24) is fixedly connected inside the sound amplifying cover (23), and a sound transmission tube (25) is fixedly connected to the sound insulation cover (24); One end of the sound transmission tube (25) is spherical and in contact with the outside, and the other end of the sound transmission tube (25) is connected to the inner side of the mask body (1); the sound amplifying cover (23) is horn-shaped as a whole, and the spherical part of the sound transmission tube (25) is located in the horn-shaped part of the sound amplifying cover (23); Both ends of the soundproof cover (24) are horn-shaped, and the spherical portion of the sound transmission tube (25) contacts the horn-shaped portion of the end of the soundproof cover (24) away from the sound amplification cover (23).

2. The dust mask for mining work according to claim 1, characterized in that: Sound-absorbing cotton (241) is arranged between the inner wall of the sound-amplifying cover (23) and the outer wall of the sound-isolating cover (24).

3. The dust mask for mining work according to claim 2, characterized in that: The spherical part of the sound transmission tube (25) is provided with circular holes in an annular array, and a film (251) is provided on the circular holes to isolate the outside from the cavity of the sound transmission tube (25).

4. The dust mask for mining work according to claim 3 is characterized in that: The adjustment assembly (3) comprises a second connection ring (31) movably connected to the inside of the connection tube (21); a tension spring (36) is fixedly connected between the second connection ring (31) and the first connection ring (22); in an initial state, the second connection ring (31) is in contact with one end of the first connection ring (22) under the tension of the tension spring (36); an elastic sheet (33) is movably connected to the outer circumference of the sound amplification cover (23); the elastic sheet (33) is fixedly connected to the second connection ring (31) toward the middle side of the second connection ring (31); the sound amplification cover (23) ) is fixedly connected to one end of the outer side of the connecting ring (22) away from the connecting ring (22) with a fixed pressure ring (35); the parts of the elastic sheet (33) located at the two ends of the connecting ring (21) are also respectively in contact with the inner walls of the connecting ring (22) and the fixed pressure ring (35); the ends of the connecting tube (21) and the fixed pressure ring (35) away from the connecting ring (22) are also fixedly connected to a rubber sound insulation felt (34); initially, the end of the elastic sheet (33) away from the connecting ring (22) passes through the connecting tube (21) and extends to the inside of the rubber sound insulation felt (34) to support the rubber sound insulation felt (34).

5. The dust mask for mining work according to claim 4, characterized in that: The adjustment assembly (3) further comprises an adjustment ring (32) bearing-connected to the inner wall of the connecting tube (21), and one end of the adjustment ring (32) close to the rubber sound insulation felt (34) extends to the outside of the connecting tube (21); The outer circumferential array of the second connecting ring (31) is provided with guide grooves (311), and the inner circumferential array of the adjusting ring (32) is fixedly connected with a convex shaft (321) that can slide in the second connecting ring (31).

6. The dust mask for mining work according to claim 5, characterized in that: A groove (331) is provided on the elastic sheet (33) at a portion located between the sound amplification cover (23) and the fixed pressure ring (35); one end of the elastic sheet (33) located inside the rubber sound insulation felt (34) is also fixedly connected to an elastic connector (332); the other end of the elastic connector (332) is connected to the rubber sound insulation felt (34); In an initial state, the elastic sheet (33) located at one end of the groove (331) close to the rubber sound insulation felt (34) abuts against the inner wall of the connecting tube (21) and causes the elastic sheet (33) to have a tendency to bend inwards.

7. The dust mask for mining work according to claim 6, characterized in that: Corrugated grooves (312) are provided on both sides of the inner wall of the guide groove (311), and the diameter of the corrugated groove (312) is greater than the diameter of the convex shaft (321).

8. The dust mask for mining work according to claim 7, characterized in that: The rubber sound insulation felt (34) is also provided with connecting nails (341) in a circumferential array between two adjacent elastic sheets (33).

9. The dust mask for mining work according to claim 8, characterized in that: One end of the elastic sheet (33) located inside the rubber sound insulation felt (34) is elastically hinged with a group of symmetrical elastic connecting rods (333); In the initial state, the elastic connecting rod (333) is abutted against the inner wall of the connecting tube (21) and is thereby contracted into the elastic sheet (33).

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