Escape breathing mask

Abstract

An escape breathing mask includes a mask body with two lens holes. A focusing lens is disposed within each lens hole. The focusing lens includes a support ring fixedly disposed within the lens hole. A transparent lens is fixedly connected to one side of the support ring, and a transparent flexible sheet is adhered and fixedly connected to the other side. The lens, flexible sheet, and support ring form a sealed cavity. The sealed cavity is connected to a liquid pump via a liquid inlet pipe, and a transparent liquid is filled into the liquid pump and the sealed cavity. This invention addresses the problem that existing breathing masks are unsuitable for people with nearsightedness or hyperopia, and limit the use of breathing masks in fires with dense smoke.

Description

Technical Field

[0001] This utility model relates to a breathing mask for escape. Background Technology

[0002] Currently, a power plant's underground plant is equipped with positive pressure breathing apparatus. Positive pressure self-contained breathing apparatus (PCB) is a type of self-contained open-type fire-fighting breathing apparatus, primarily suitable for use in fire fighting, chemical plants, ships, petroleum plants, metallurgical plants, factories, mines, laboratories, and other similar environments. It enables firefighters or rescue personnel to safely conduct firefighting, rescue, and medical relief work in harsh environments filled with dense smoke, toxic gases, steam, or lack of oxygen. In the context of the Baihetan underground plant, PCB is mainly used for escape or work in situations such as flooding of the plant, leaks of toxic gases such as sulfur hexafluoride, and fires accompanied by dense smoke.

[0003] Existing escape breathing masks have significant limitations in practical applications. On the one hand, for people with nearsightedness or farsightedness, wearing a mask requires removing their glasses, resulting in blurred vision and limited field of vision. In emergency escape or rescue scenarios, they are prone to danger because they cannot see environmental details clearly. On the other hand, in extreme environments such as fires with dense smoke or strong water mist, the transparent lenses of ordinary masks cannot penetrate visual obstacles, making it difficult for users to identify surrounding objects, paths, or equipment, and making them prone to getting lost. This greatly limits the use of masks in complex scenarios and increases safety risks. Therefore, there is an urgent need for a breathing mask that can be adapted to people with nearsightedness or farsightedness and cope with low visibility environments. Utility Model Content

[0004] The purpose of this invention is to provide an escape breathing mask to solve the problem that existing breathing masks are not suitable for people with nearsightedness or farsightedness and that the use of breathing masks is limited in the event of a fire with dense smoke.

[0005] To solve the above problems, the technical solution of this utility model is as follows: An escape breathing mask includes a mask body with two lens holes. A focusing lens is provided in the lens holes. The focusing lens includes a support ring fixedly disposed in the lens hole. A transparent lens is fixedly connected to one side of the support ring, and a transparent flexible sheet is attached and fixedly connected to the other side. The lens, the flexible sheet and the support ring form a sealed cavity. The sealed cavity is connected to a liquid pump through a liquid inlet pipe. The liquid pump and the sealed cavity are filled with transparent liquid.

[0006] The liquid pump includes a pumping cylinder whose lower end is connected to the inlet pipe. Inside the pumping cylinder, there is a piston and a screw. The lower end of the screw is connected to the piston, and the upper end of the screw is connected to the handle.

[0007] An end cap is fixedly connected to the upper end of the liquid extraction cylinder, and the screw is threadedly connected to the end cap.

[0008] A groove is provided on the piston end face, and a flange is provided at the groove opening. A turntable is provided in the groove, and the lower end of the screw passes through the flange and is fixedly connected to the turntable.

[0009] A sleeve is fixedly connected inside one of the lens holes, and a tapered tube is detachably threaded inside the sleeve. The end of the tapered tube away from the sleeve is connected to the infrared thermal imager.

[0010] The transparent flexible sheet is made of high-temperature vulcanized methyl vinyl silicone rubber.

[0011] The transparent liquid is silicone oil.

[0012] The beneficial effects of this utility model are as follows: 1. The focusing lens utilizes a structure where a transparent lens, a transparent flexible sheet, and a support ring enclose a sealed cavity. Combined with a liquid pump to adjust the amount of silicone oil filling the sealed cavity, the curvature of the transparent flexible sheet can be flexibly changed, essentially integrating a pair of "glasses" with real-time adjustable prescription into the mask. Users can wear the mask without removing their existing glasses, ensuring a tight seal between the mask and face, and allowing for rapid adaptation to their visual needs through micro-adjustment via the liquid pump (the screw and piston's threaded transmission has a self-locking function). This ensures clear vision during escape or rescue operations, solving the problem of adapting traditional masks for people with visual impairments.

[0013] 2. By incorporating a detachable infrared thermal imager connection structure (sleeve and tapered pipe thread connection) at the lens aperture, it can be used as a regular face mask under normal conditions. In low-visibility environments such as dense smoke or heavy water mist, an infrared thermal imager can be quickly installed, enabling clear identification of object outlines, paths, and heat source distribution using thermal imaging technology. This overcomes the limitations of traditional face masks in visually impaired environments, reducing the risk of disorientation and misoperation due to obstructed vision, and significantly improving escape safety and rescue efficiency in extreme scenarios. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2 This is a cross-sectional structural diagram of the present invention. Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Mask body; 2. Sleeve; 3. Infrared thermal imager; 4. Conical tube; 5. Liquid pump; 5. Turntable; 51. Flange; 52. Liquid suction cylinder; 53. Piston; 54. Screw; 55. End cap; 56. Focusing lens; 6. Lens; 61. Flexible sheet; 62. Support ring; 63. Liquid inlet pipe; 64. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 3 As shown, an escape breathing mask includes a mask body 1 with two lens holes. A focusing lens 6 is disposed within each lens hole. The focusing lens 6 includes a support ring 63 fixedly disposed within the lens hole. The support ring 63 is bonded to the lens hole with adhesive. A transparent glass lens is fixedly connected to one side of the support ring 63, and a transparent flexible sheet 62 is glued and fixedly connected to the other side. The lens, flexible sheet 62, and support ring 63 form a sealed cavity. The sealed cavity is connected to a liquid pump 5 via a liquid inlet pipe 64. The sealed cavity is filled with a transparent liquid. Because the transparent flexible sheet 62 has a certain elasticity, when the liquid pump 5 is used to draw or push the transparent liquid into the sealed cavity, the flexible sheet 62 will expand or contract according to the amount of liquid pushed. This adjusts the curvature of the transparent flexible sheet 62, so as to add an adjustable "eyeglass lens" to the mask, allowing people with nearsightedness or farsightedness to wear the mask without wearing glasses. This ensures the seal between the breathing mask and the face, so that the wearer still has corrected vision after wearing the mask.

[0018] The liquid pump 5 includes a suction cylinder 53 whose lower end is connected to the liquid inlet pipe 64. A piston 54 and a screw 55 are disposed inside the suction cylinder 53. The lower end of the screw 55 is connected to the piston 54, and the upper end of the screw 55 is connected to a handle. This structure of the liquid pump 5 is similar to that of a syringe, and it is simple in structure and easy to manufacture.

[0019] An end cap 56 is fixedly connected to the upper end of the liquid extraction cylinder 53, and the screw 55 is threadedly connected to the end cap 56. This structure has a self-locking function, which allows for easy fine-tuning of the position of the piston 54 and locking of the position of the piston 54, making it easier and more convenient to adjust the prescription of the "eyeglass lens".

[0020] A groove is provided on the end face of the piston 54, and a flange 52 is provided at the opening of the groove. A turntable 51 is provided inside the groove, and the lower end of the screw 55 passes through the flange 52 and is fixedly connected to the turntable 51. In this way, when the screw 55 is rotated, the piston 54 does not need to rotate with the screw 55, the friction area is reduced, and driving the piston 54 is easier.

[0021] A sleeve 2 is fixedly connected inside one of the lens holes. A tapered tube 4 is detachably threaded inside the sleeve 2. The end of the tapered tube 4 away from the sleeve 2 is connected to an infrared thermal imager 3. Under normal circumstances, there is no need to connect the thermal imager. However, in situations with low visibility, such as strong water mist or dense smoke in a fire, the infrared thermal imager 3 can be quickly connected to the sleeve 2. In the event of a fire accompanied by dense smoke or other situations that interfere with vision, thermal imaging can be used to better observe the shape and outline of the equipment, avoiding a series of dangerous behaviors caused by obstructed vision and reducing the possibility of getting lost at the accident scene.

[0022] The transparent flexible sheet 62 is made of high-temperature vulcanized methyl vinyl silicone rubber. This material has excellent elasticity, high-temperature resistance, chemical corrosion resistance, and aging resistance. This ensures the performance stability of the transparent flexible sheet in complex and hazardous environments. In the high-temperature and corrosive gas environment of a fire scene, the transparent flexible sheet can maintain good elasticity and continue to work normally, ensuring that the curvature adjustment function of the focusing lens is not affected, providing users with reliable vision correction protection.

[0023] The transparent liquid is silicone oil. Silicone oil is chemically stable, has low viscosity variation with temperature, and good compatibility with various materials. It maintains stable physical properties under different ambient temperatures, providing stable pressure transmission for the curvature adjustment of the focusing lens. Furthermore, silicone oil does not chemically react with materials such as high-temperature vulcanized methyl vinyl silicone rubber, ensuring the stability of the medium within the sealed cavity and thus guaranteeing the long-term reliable operation of the entire focusing system.

[0024] The embodiments described in this specification are merely examples of implementations of the inventive concept. The scope of protection of this utility model should not be considered as limited to the specific forms described in the embodiments. The scope of protection of this utility model also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. A respiratory escape mask characterized by: The mask body (1) has two lens holes and a focusing lens (6) is provided in the lens holes. The focusing lens (6) includes a support ring (63) fixedly installed in the lens hole. A transparent lens (61) is fixedly connected to one side of the support ring (63) and a transparent flexible sheet (62) is attached and fixedly connected to the other side. The lens (61), the flexible sheet (62) and the support ring (63) form a sealed cavity. The sealed cavity is connected to the liquid pump (5) through the liquid inlet pipe (64). The liquid pump (5) and the sealed cavity are filled with transparent liquid.

2. A breathing mask for escape according to claim 1, characterized in that: The liquid pump (5) includes a pumping cylinder (53) whose lower end is connected to the inlet pipe (64). A piston (54) and a screw (55) are provided inside the pumping cylinder (53). The lower end of the screw (55) is connected to the piston (54), and the upper end of the screw (55) is connected to the handle.

3. A breathing mask for escape purposes according to claim 2, characterized in that: An end cap (56) is fixedly connected to the upper end of the liquid extraction cylinder (53), and the screw (55) is threadedly connected to the end cap (56).

4. A breathing mask for escape purposes according to claim 3, characterized in that: A groove is provided on the end face of the piston (54), and a flange (52) is provided at the opening of the groove. A turntable (51) is provided in the groove. The lower end of the screw (55) passes through the flange (52) and is fixedly connected to the turntable (51).

5. A breathing mask for escape purposes according to any one of claims 1 to 4, characterized in that: A sleeve (2) is fixedly connected inside one of the lens holes. A tapered tube (4) is detachably threaded inside the sleeve (2). The end of the tapered tube (4) away from the sleeve (2) is connected to the infrared thermal imager (3).

6. An escape breathing mask according to any one of claims 1 to 4, characterized in that: The transparent flexible sheet (62) is made of high-temperature vulcanized methyl vinyl silicone rubber.

7. An escape breathing mask according to any one of claims 1 to 4, characterized in that: The transparent liquid is silicone oil.

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