Positive pressure respirator with gas cylinder convenient to replace

Abstract

The utility model discloses a positive pressure respirator convenient to replace a gas cylinder, which relates to the technical field of respirators, and comprises a bridle, a gas cylinder and a breathing mask, a back plate is fixed in the middle of the bridle, an auxiliary mechanism is arranged on the outer side of the back plate, the auxiliary mechanism comprises a fixing plate, the fixing plate is arranged in an arc shape, and the fixing plate is fixed on the back plate. The gas cylinder is placed on the inner side of the fixing plate, and the fixing plate is located on the outer side of the back plate and can be rapidly fixed or rotationally unfolded towards the outer side; by arranging the auxiliary mechanism, the fixing plate is rotationally connected to the back plate, the gas cylinder can be put in for replacement by unfolding the fixing plate outwards, limitation of the fixing plate can be fixed and opened by rotating fixing buttons on the two sides, and protection and heat insulation of the gas cylinder can be improved through the fixing plate.

Description

Technical Field

[0001] This utility model relates to the field of respirator technology, and in particular to a positive pressure respirator that facilitates the replacement of gas cylinders. Background Technology

[0002] Positive pressure breathing apparatus is one of the commonly used equipment for firefighters during rescue operations. The breathing cylinder is worn on the body through the straps, and then the breathing mask is put on the head. After the breathing mask is on, oxygen can be supplied to the firefighters through the cylinder. Usually, when the oxygen pressure in the cylinder is lower than 5 kPa, an alarm will sound and it needs to be replaced. When replacing, first loosen the straps, and then disconnect the cylinder connection to replace it.

[0003] However, when replacing a gas cylinder, the straps on the cylinder are loosened, the cylinder connector is removed, the air cylinder is pulled out, and the oxygen-filled cylinder is placed on top. When placing it on, firefighters need to tighten the straps by hand first, then press down on the fixing point, and then press it down to secure it. However, when replacing an oxygen cylinder, it is difficult to press down steadily while wearing gloves, which can lead to unstable installation of the oxygen cylinder. At the same time, after the gas cylinder enters the fire scene, it is exposed to high temperatures, which will cause the internal oxygen pressure to increase rapidly, thus increasing the pressure of the oxygen cylinder and causing the oxygen to be used up faster. Utility Model Content

[0004] The technical problem this invention aims to solve is that when replacing an oxygen cylinder, it is necessary to press down on the fixing point of the strap to prevent the strap from slipping. As a result, when replacing an oxygen cylinder at the operation site, the oxygen cylinder installation becomes unstable due to unstable pressing.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a positive pressure respirator that facilitates the replacement of gas cylinders, including a strap, a gas cylinder and a breathing mask. A back plate is fixed in the middle of the strap, and an auxiliary mechanism is provided on the outer side of the back plate. The auxiliary mechanism includes a fixing plate. The fixing plate is arc-shaped and rotates on the outer side of the back plate. The gas cylinder is placed on the inner side of the fixing plate. The fixing plate is located on the outer side of the back plate and can be quickly fixed or rotated outward.

[0006] Furthermore: connecting plates are fixedly connected to both sides of the back plate, and fixing buttons are rotatably connected to the connecting plates. Matching plates are fixedly connected to corresponding positions on both sides of the fixing plates. Fixing holes are provided on the matching plates, and the fixing buttons pass through the fixing holes and rotate 90 degrees to fix them.

[0007] Furthermore: a clamp head is fixedly connected to both sides of the lower end of the back plate, and a plug rod is fixedly connected to both sides of the lower end of the fixing plate. The plug rod is rotatably arranged inside the clamp head. A second baffle is fixedly connected to the side wall of the plug rod. A first baffle is fixedly connected to the inner end of the clamp head. The positions of the first baffle and the second baffle are corresponding and abutting each other, and the first baffle is inclined at 45 degrees relative to the back plate.

[0008] Furthermore, the inner side of the fixing plate is fixedly connected with anti-slip pads, and multiple anti-slip pads are provided.

[0009] Furthermore, a fixing strip is fixedly connected to the outer side of the back plate, and the fixing strip is located on the inner side of the edge of the fixing plate.

[0010] Furthermore, a handle is fixedly connected to the outer end of the fixing plate.

[0011] The beneficial effects of this utility model are:

[0012] (1) The positive pressure respirator of this utility model is easy to replace gas cylinders: by setting an auxiliary mechanism, the fixing plate is rotatably connected to the back plate. The gas cylinder can be put in for replacement by unfolding the fixing plate outward. The fixing plate can be fixed and opened by rotating the fixing knobs on both sides. The fixing plate can improve the protection and heat insulation of the gas cylinder. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

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

[0015] Figure 2 This is a schematic diagram of the unfolded structure of the fixing plate of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the fixing plate and anti-slip pad of this utility model;

[0017] Figure 4 yes Figure 2 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Strap; 2. Gas cylinder; 3. Breathing mask; 4. Back panel; 5. Connecting plate; 6. Fixing button; 7. Clip; 8. First baffle; 9. Fixing plate; 10. Insert rod; 11. Second baffle; 12. Matching plate; 13. Fixing hole; 14. Handle; 15. Fixing strip; 16. Anti-slip pad. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figures 1-4 As shown: This utility model provides a technical solution for a positive pressure respirator that facilitates cylinder replacement, including a strap 1, a cylinder 2, and a breathing mask 3. A back plate 4 is fixed in the middle of the strap 1, and an auxiliary mechanism is provided on the outer side of the back plate 4. The auxiliary mechanism includes a fixing plate 9, which is arc-shaped and rotatably positioned on the outer side of the back plate 4. The cylinder 2 is placed inside the fixing plate 9, and the fixing plate 9, located on the outer side of the back plate 4, can be quickly fixed or rotated outwards. When replacing the cylinder 2, first disconnect the cylinder 2's connector from the air tube, then contact and fix the fixing plate 9 with the back plate 4 before rotating it outwards. Rotate to unfold, and then you can take out the gas cylinder 2. During installation, insert the gas cylinder 2 into the unfolded fixing plate 9, and then push the fixing plate 9 upwards so that it is perpendicular to the back plate 4. Then connect the connecting nozzle and the gas pipe and it is ready to use. This eliminates the need to untie the original straps and prevents the gas cylinder 2 from becoming loose. When in use, the fixing plate 9 can block the outside of the gas cylinder 2, preventing the gas cylinder 2 from being directly baked by the high temperature of the outside flames when used at a fire scene. The fixing plate 9 further fixes and protects the gas cylinder 2. The fixing plate 9 is made of silicone material, which has high hardness and good heat insulation effect.

[0022] like Figure 2 As shown: Connecting plates 5 are fixedly connected to both sides of the back plate 4. Fixing buttons 6 are rotatably connected to the connecting plates 5. Matching plates 12 are fixedly connected to the corresponding positions on both sides of the fixing plate 9. Fixing holes 13 are opened on the matching plates 12. The fixing buttons 6 pass through the fixing holes 13 and rotate 90 degrees to fix them. When the fixing plate 9 is parallel to the back plate 4, the gas cylinder 2 is restricted and fixed between the fixing plate 9 and the back plate 4. The fixing buttons 6 rotatably connected to the connecting plates 5 can rotate in two limit positions, namely vertical and horizontal. When the fixing plate 9 rotates upward, the fixing holes 13 pass through the horizontal fixing buttons 6. When the fixing buttons 6 pass through the matching plates 12, they can be fixed by rotating 90 degrees. The fixing buttons 6 are in the tightest rotation position after rotating 90 degrees, and will not reverse or loosen.

[0023] like Figure 4 As shown: A clamp 7 is fixedly connected to both sides of the lower end of the back plate 4. A rod 10 is fixedly connected to both sides of the lower end of the fixing plate 9. The rod 10 is rotatably positioned inside the clamp 7. A second baffle 11 is fixedly connected to the side wall of the rod 10. A first baffle 8 is fixedly connected to the inner end of the clamp 7. The first baffle 8 and the second baffle 11 are positioned correspondingly and abutting each other. The first baffle 8 is inclined at 45 degrees relative to the back plate 4. The clamp 7 is fixed to both sides of the lower end of the back plate 4. The rod 10 is inserted into the clamp 7 and can rotate. A second baffle 11 is fixedly connected to the side wall of the rod 10. A first baffle 8 is fixedly connected to the inner side of the clamp 7. When the fixing plate 9 rotates outward, it drives the rod 10 to rotate. The rod 10 drives the second baffle 11 to rotate. When the second baffle 11 abuts against the first baffle 8, the maximum rotation angle of the fixing plate 9 is 45 degrees, avoiding excessive rotation that could affect the replacement of the gas cylinder 2.

[0024] like Figure 3 As shown: Anti-slip pads 16 are fixedly connected to the inner side of the fixing plate 9, and multiple anti-slip pads 16 are provided; the anti-slip pads 16 are elastic. When the gas cylinder 2 is placed inside the fixing plate 9, it contacts the outer side of the gas cylinder 2 through the anti-slip pads 16. In this way, the anti-slip pads 16 can further prevent the gas cylinder 2 from loosening. Moreover, the multiple anti-slip pads 16 can make the gas cylinder 2 more balanced and away from the fixing plate 9 to avoid overheating.

[0025] like Figure 2 As shown: A fixing strip 15 is fixedly connected to the outer side of the back plate 4. The fixing strip 15 is located on the inner side of the edge of the fixing plate 9. When the fixing plate 9 rotates upward, the edge is locked on the outer side of the fixing strip 15. The fixing strip 15 and the fixing plate 9 are fixed by a staggered method, which can increase the connection stability between the fixing plate 9 and the back plate 4.

[0026] like Figure 2 and Figure 3 As shown: A handle 14 is fixedly connected to the outer end of the fixed plate 9, which allows the operator to easily rotate the fixed plate 9 outward to open.

[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A positive pressure respirator for easy cylinder replacement, comprising a strap (1), a cylinder (2), and a breathing mask (3), characterized in that, A back plate (4) is fixed in the middle of the strap (1). An auxiliary mechanism is provided on the outside of the back plate (4). The auxiliary mechanism includes a fixing plate (9). The fixing plate (9) is arc-shaped and is located on the outside of the back plate (4) and rotates. The gas cylinder (2) is placed on the inside of the fixing plate (9). The fixing plate (9) is located on the outside of the back plate (4) and can be quickly fixed or rotated outward.

2. A positive pressure respirator for easy cylinder replacement according to claim 1, characterized in that: The back plate (4) is fixedly connected to both sides by connecting plates (5), and fixed buttons (6) are rotatably connected to the connecting plates (5). Matching plates (12) are fixedly connected to the corresponding positions on both sides of the fixed plate (9). Fixed holes (13) are opened on the matching plates (12). The fixed buttons (6) pass through the fixed holes (13) and rotate 90 degrees to fix them.

3. A positive pressure respirator for easy cylinder replacement according to claim 2, characterized in that: The lower ends of the back plate (4) are fixedly connected to the two sides of the clamp head (7), and the lower ends of the fixing plate (9) are fixedly connected to the two sides of the insertion rod (10). The insertion rod (10) is rotatably arranged inside the clamp head (7). The side wall of the insertion rod (10) is fixedly connected to the second baffle (11). The inner end of the clamp head (7) is fixedly connected to the first baffle (8). The positions of the first baffle (8) and the second baffle (11) are corresponding and abutting each other, and the first baffle (8) is inclined at 45 degrees relative to the back plate (4).

4. A positive pressure respirator for easy cylinder replacement according to claim 2, characterized in that: The inner side of the fixing plate (9) is fixedly connected with an anti-slip pad (16), and the number of anti-slip pads (16) is multiple.

5. A positive pressure respirator for easy cylinder replacement according to claim 3, characterized in that: A fixing strip (15) is fixedly connected to the outer side of the back plate (4), and the fixing strip (15) is located on the inner side of the edge of the fixing plate (9).

6. A positive pressure respirator for easy cylinder replacement according to claim 2, characterized in that: A handle (14) is fixedly connected to the outer end of the fixing plate (9).

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