Civil protective smoke mask

Abstract

The utility model relates to a civil protective smoke mask which comprises a mask body, the periphery of the mask body can be attached to the face, a fixing belt assembly is installed on the mask body, transparent eyeshades are installed at the positions, corresponding to the eyes, of the mask body, and a convex shell is fixedly communicated with the position, corresponding to the mouth and the nose, of the mask body. The convex shell is communicated with a telescopic ventilation pipe assembly, a detachable ventilation filter element is installed at the communication position of the ventilation pipe assembly and the convex shell, a lacing assembly is installed at the end, away from the convex shell, of the ventilation pipe assembly, and the ventilation filter element is of a sheet-shaped structure; the breathable filter element is formed by compositing two non-woven fabric layers and a melt-blown fabric layer located between the two non-woven fabric layers, and when the mask is used, normal breathing of a user can be facilitated; secondly, waste can be reduced; and finally, the breathable filter element can be conveniently disassembled, assembled and replaced.

Description

Technical Field

[0001] This utility model belongs to the technical field of smoke masks, and in particular relates to a civilian protective smoke mask. Background Technology

[0002] In the event of a fire, since smoke is usually located more than 30 centimeters above the floor, trapped people typically bend over to escape. During the escape, a smoke mask is a protective device that can be worn on the face of the escapee to reduce casualties.

[0003] Currently, existing smoke masks typically include a mask body, a fixing strap, and transparent goggles. A filter that can filter and adsorb smoke needs to be installed on the mask body. However, since some smoke masks use activated carbon to filter and adsorb smoke, the activated carbon needs to be replaced frequently to ensure the protective effect of the smoke mask. However, in the process of storing smoke masks in civilian use, since smoke masks are often idle for a long time, frequent replacement of activated carbon will cause unnecessary waste. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a civilian protective smoke mask to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows:

[0006] A civilian protective smoke mask includes a mask body with an outer periphery that fits snugly against the face. A fixing strap assembly is installed on the mask body, and transparent goggles are installed on the mask body corresponding to the eye positions. A protruding shell is fixedly connected to the mask body corresponding to the mouth and nose positions. A retractable ventilation tube assembly is connected to the protruding shell. A detachable breathable filter element is installed at the connection point between the ventilation tube assembly and the protruding shell. A strap assembly is installed at the end of the ventilation tube assembly away from the protruding shell. The breathable filter element has a sheet-like structure and is composed of two layers of non-woven fabric and a meltblown fabric layer located between the two layers of non-woven fabric.

[0007] Furthermore, the convex shell has a vent hole, and the convex shell is coaxially and fixedly connected to an internally threaded tube with openings at both ends through the vent hole. The inner diameter of the internally threaded tube is larger than the diameter of the vent hole. The vent filter element is disc-shaped, and the outer diameter of the vent filter element is adapted to the inner diameter of the internally threaded tube and located inside the internally threaded tube. The vent pipe assembly includes a corrugated hose with openings at both ends. A tie assembly is installed at one end of the corrugated hose, and the other end of the corrugated hose is coaxially and fixedly connected to an externally threaded tube with openings at both ends. The externally threaded tube is threadedly connected to the internally threaded tube.

[0008] Furthermore, an annular disc is coaxially fixedly sleeved on one end of the externally threaded tube near the corrugated hose. A receiving tube with open ends is coaxially installed on the annular disc and sleeved on the externally threaded tube. A receiving groove is formed between the receiving tube and the externally threaded tube. The outer diameter of the receiving groove is larger than the outer diameter of the internally threaded tube, and a matching rubber sealing ring is provided in the receiving groove.

[0009] Furthermore, the tether assembly includes two symmetrically arranged tethers, one end of each tether being connected to a corrugated hose.

[0010] Furthermore, the fixing strap assembly includes a strap and a headband. The headband is an elastic band, and its two ends are respectively connected to the top two sides of the mask body. There are two straps, which are symmetrically arranged on the bottom two sides of the mask body, and one end of each strap is connected to the mask body.

[0011] Furthermore, one of the straps has a hook and loop fastener sewn to the end furthest from the mask body, and the other strap has a loop fastener to the end furthest from the mask body, which is opposite to the hook and loop fastener fastener fastener fastener fastener fastener fastener fastener fastener.

[0012] The beneficial effects of this utility model by adopting the above technical solution are as follows:

[0013] In use, this invention allows the mask to be worn on the user's face via a fixing strap assembly. The end of the ventilation tube assembly furthest from the convex shell can then be secured to the user's ankle via a strap assembly. This ensures the user can breathe air from a space 30 cm above the floor during a bend-over escape, facilitating normal breathing. Furthermore, the retractable ventilation tube assembly allows for easy running escape. Secondly, by installing a breathable filter at the connection point between the ventilation tube assembly and the convex shell, the filter material can be the same as that of existing disposable masks, preventing dust and other contaminants from entering the mask body through the ventilation tube assembly and extending the filter's lifespan. This reduces the need for frequent filter replacements during civilian storage of the smoke mask, minimizing waste. Finally, the removable filter facilitates easy disassembly and replacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;

[0016] Figure 3 This is a schematic diagram of the structure of some parts of the device in the split state;

[0017] Figure 4 This is a schematic diagram of the structure of some of the devices of this utility model.

[0018] Reference numerals: 1. Mask body; 2. Transparent goggles; 3. Fixing strap assembly; 31. Headband strap; 32. Strap; 33. Hook and loop fastener; 34. Hook and loop fastener; 4. Ventilation tube assembly; 41. Corrugated hose; 42. Externally threaded tube; 43. Annular disc; 44. Receiving tube; 45. Receiving groove; 5. Convex shell; 51. Ventilation hole; 6. Internally threaded tube; 7. Rubber sealing ring; 8. Strap assembly; 81. Strap; 9. Ventilation filter element. Detailed Implementation

[0019] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] like Figures 1 to 4 As shown, this utility model provides a civilian protective smoke mask, including a mask body 1 whose outer periphery can fit snugly against the face. Specifically, a silicone ring can be embedded in the outer periphery of the mask body 1 to ensure a snug fit against the face. A fixing strap assembly 3 is installed on the mask body 1, and a transparent goggles 2 are installed on the mask body 1 corresponding to the eye positions. Specifically, the mask body 1, the transparent goggles 2, and the fixing strap assembly 3 are all prior art. In use, the mask body 1 can be worn on the user's face through the fixing strap assembly 3. The mask body 1 has a protruding shell 5 fixedly connected to the mouth and nose position. A retractable ventilation tube assembly 4 is connected to the protruding shell 5. The ventilation tube assembly 4 has a certain length. A detachable breathable filter element 9 is installed at the connection position between the ventilation tube assembly 4 and the protruding shell 5. A tie assembly 8 is installed at the end of the ventilation tube assembly 4 away from the protruding shell 5. The breathable filter element 9 has a sheet structure and is composed of two layers of non-woven fabric and a meltblown fabric layer located between the two layers of non-woven fabric. That is, the breathable filter element 9 is made of the same material as the existing disposable masks.

[0021] Specifically, during use, after wearing the mask body 1, the end of the ventilation tube assembly 4 away from the convex shell 5 can be fixed to the user's ankle via the strap assembly 8. This allows the user to breathe air from a space less than 30 cm above the floor during a bend-over escape, facilitating normal breathing. Furthermore, the retractable ventilation tube assembly 4 facilitates running escape. Secondly, by installing a breathable filter 9 at the connection point between the ventilation tube assembly 4 and the convex shell 5, the material of the breathable filter 9 can be made the same as that of existing disposable masks, preventing dust and other contaminants from entering the mask body 1 through the ventilation tube assembly 4 and extending the shelf life of the breathable filter 9. This reduces the need for frequent replacements of the breathable filter 9 during civilian storage of smoke masks, minimizing waste. Finally, the detachable nature of the breathable filter 9 facilitates easy disassembly and replacement.

[0022] The specific installation method for the removable air filter element 9 is as follows: Figures 1 to 4 As shown, the convex shell 5 has a vent hole 51, and the convex shell 5 is coaxially connected to an internally threaded tube 6 with openings at both ends through the vent hole 51. The inner diameter of the internally threaded tube 6 is larger than the aperture of the vent hole 51. The vent filter element 9 is disc-shaped, and the outer diameter of the vent filter element 9 matches the inner diameter of the internally threaded tube 6 and is located inside the internally threaded tube 6. Specifically, since the inner diameter of the internally threaded tube 6 is larger than the aperture of the vent hole 51, the convex shell 5 can block the vent filter element 9 to limit its movement. The vent pipe assembly 4 includes a corrugated hose 41 with openings at both ends. One end of the corrugated hose 41 is equipped with a tie assembly 8, and the other end of the corrugated hose 41 is coaxially fixedly connected to an externally threaded tube 42 with openings at both ends. The externally threaded tube 42 is threadedly connected to the internally threaded tube 6. Specifically, in use, by rotating the externally threaded tube 42 on the internally threaded tube 6, the externally threaded tube 42 can push the air filter element 9 so that the air filter element 9 abuts against the convex shell 5. By rotating the externally threaded tube 42 in the opposite direction, after separating the externally threaded tube 42 from the internally threaded tube 6, the air filter element 9 inside the internally threaded tube 6 can be removed, thus facilitating the disassembly and replacement of the air filter element 9.

[0023] To improve the sealing performance of the internally threaded pipe 6 and the externally threaded pipe 42 at the connection point, therefore, as Figures 1 to 4As shown, an annular disc 43 is coaxially fixedly sleeved on one end of the externally threaded pipe 42 near the corrugated hose 41. A receiving tube 44, which is sleeved on the externally threaded pipe 42 and open at both ends, is coaxially mounted on the annular disc 43. Specifically, the end of the externally threaded pipe 42 away from the corrugated hose 41 is located outside the receiving tube 44. A receiving groove 45 is formed between the receiving tube 44 and the externally threaded pipe 42. The outer diameter of the receiving groove 45 is larger than the outer diameter of the internally threaded pipe 6, and a matching rubber sealing ring 7 is provided in the receiving groove 45. Specifically, during the process of connecting the externally threaded pipe 42 and the internally threaded pipe 6, the internally threaded pipe 6 can squeeze the rubber sealing ring 7 in the receiving groove 45 to improve the sealing performance of the internally threaded pipe 6 and the externally threaded pipe 42 at the connection position.

[0024] The specific settings for the lacing assembly 8 are as follows: Figure 1 As shown, the lacing assembly 8 includes two symmetrically arranged lacing straps 81, one end of each lacing strap 81 being connected to the corrugated hose 41. Specifically, in use, the ends of the two lacing straps 81 away from the corrugated hose 41 can be tied together to fix the end of the ventilation tube assembly 4 away from the convex shell 5 at the user's ankle.

[0025] The specific setup method for fixing component 3 is as follows: Figure 1 As shown, the fixing strap assembly 3 includes straps 32 and headbands 31. The headbands 31 are elastic bands, and both ends of the headbands 31 are connected to the top sides of the mask body 1. There are two straps 32, which are symmetrically arranged on the bottom sides of the mask body 1. One end of each strap 32 is connected to the mask body 1. Specifically, in use, the elastic headbands 31 can be used to initially fix the mask body 1 to the user's face. Then, the ends of the two straps 32 away from the mask body 1 are connected together to double fix the position of the mask body 1.

[0026] Furthermore, such as Figure 1 As shown, one of the straps 32 has a hook and loop fastener 33 sewn to the end away from the mask body 1, and the other strap 32 has a hook and loop fastener 34 sewn to the end away from the mask body 1, which is opposite to the hook and loop fastener 33. Specifically, by setting the hook and loop fastener 33 and the hook and loop fastener 34, it is easy to connect the ends of the two straps 32 away from the mask body 1 together. Secondly, both the hook and loop fastener 33 and the hook and loop fastener 34 can be set to have a certain length, so that the tightness of the straps 32 can be easily adjusted according to the needs during use.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A civil defense type smoke mask comprising a mask body having a periphery adapted to fit over the face, a retaining strap assembly mounted on the mask body, and a transparent eye shield mounted on the mask body in a position corresponding to the eyes, characterized in that: The mask body has a convex shell fixedly connected to the mouth and nose position. A retractable air tube assembly is connected to the convex shell. A detachable breathable filter element is installed at the connection position between the air tube assembly and the convex shell. A tie assembly is installed at the end of the air tube assembly away from the convex shell. The breathable filter element has a sheet structure and is composed of two layers of non-woven fabric and a meltblown fabric layer located between the two layers of non-woven fabric.

2. A protective smoke mask of the civil defense type according to claim 1, characterized in that: The convex shell has a vent hole, and the convex shell is coaxially fixedly connected to an internally threaded tube with openings at both ends through the vent hole. The inner diameter of the internally threaded tube is larger than the diameter of the vent hole. The vent filter element is disc-shaped, and the outer diameter of the vent filter element is adapted to the inner diameter of the internally threaded tube and located inside the internally threaded tube. The vent pipe assembly includes a corrugated hose with openings at both ends. A tie assembly is installed at one end of the corrugated hose, and the other end of the corrugated hose is coaxially fixedly connected to an externally threaded tube with openings at both ends. The externally threaded tube is threadedly connected to the internally threaded tube.

3. A protective smoke mask of the civil defense type according to claim 2, characterized in that: An annular disc is coaxially fixedly sleeved on one end of the externally threaded pipe near the corrugated hose. A receiving tube with open ends is coaxially installed on the annular disc and sleeved on the externally threaded pipe. A receiving groove is formed between the receiving tube and the externally threaded pipe. The outer diameter of the receiving groove is larger than the outer diameter of the internally threaded pipe, and a matching rubber sealing ring is provided in the receiving groove.

4. A civilian protective smoke mask according to claim 2, characterized in that: The tether assembly includes two symmetrically arranged tethers, one end of each tether being connected to a corrugated hose.

5. A civilian protective smoke mask according to claim 1, characterized in that: The fixing strap assembly includes a strap and a headband. The headband is an elastic band, and its two ends are respectively connected to the top two sides of the mask body. There are two straps, which are symmetrically arranged on the bottom two sides of the mask body, and one end of each strap is connected to the mask body.

6. A civilian protective smoke mask according to claim 4, characterized in that: One of the straps has a hook and loop fastener sewn to the end furthest from the mask body, while the other strap has a loop fastener to the end furthest from the mask body, opposite to the hook and loop fastener fastener fastener fastener fastener fastener fastener.

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