Filtering opening of respirator

Abstract

The invention relates to the technical field of respirators, in particular to a respirator filtering port which comprises an arc-shaped plate fixedly arranged on the front side of the respirator, filtering ports are formed in the two sides of the arc-shaped plate, air inlet holes are formed in the positions, corresponding to the filtering ports, of the two sides of the respirator, and positioning rings are slidably arranged on the sides, away from the air inlet holes, in the two filtering ports. The sides, deviating from each other, of the two positioning rings are hinged to the filtering openings through pin shafts, filtering layers are slidably arranged on the sides, close to the air inlet holes, of the interiors of the filtering openings, sliding grooves are formed in the sides, close to each other, of the two filtering openings, through holes are formed between the bottoms of the two sliding grooves and the cavity, and the cavity is formed in the middle of the arc-shaped plate. A vertical rotating shaft is arranged in the cavity, the two ends of the rotating shaft are rotationally connected with the cavity wall of the cavity through rolling bearings, and one end of the rotating shaft penetrates out of the arc-shaped plate. According to the invention, the filtering layer with poor filtering effect can be quickly replaced, so that the convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of breathing masks, and specifically to a filtering port of a breathing mask. Background Art

[0002] Since haze contains a large amount of particles such as dust, sulfuric acid, and nitric acid, people inhaling this kind of air for a long time is very harmful to their physical health. Currently, people generally wear face masks to prevent various dusts and bacteria and other contaminants in the polluted environment from being inhaled through the respiratory tract to protect the health of the human body.

[0003] Generally, a filter layer is provided inside the filtering port of the breathing mask to filter harmful substances in the air. However, the filtering effect of the filter layer will deteriorate after being used for a period of time. In the prior art, the filter layer is not convenient to be quickly replaced, which is very inconvenient. Therefore, we have developed a filtering port of a breathing mask. Summary of the Invention

[0004] The purpose of the present invention is to provide a filtering port of a breathing mask, which can quickly replace the filter layer with a deteriorated filtering effect, improving convenience, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A filtering port of a breathing mask, including an arc-shaped plate fixedly provided on the front side of the breathing mask. Filtering ports are opened on both sides of the arc-shaped plate. Air inlet holes are opened at positions corresponding to the filtering ports on both sides of the breathing mask. A positioning ring is slidably provided on the side of the two filtering ports away from the air inlet holes. One side of the two positioning rings facing away from each other is hinged to the filtering port through a pin shaft. A filter layer is slidably provided on the side of the interior of the filtering port close to the air inlet holes. A sliding groove is opened on one side of the two filtering ports close to each other. A through hole is opened between the bottom of the sliding groove and a cavity. A cavity is opened in the middle of the arc-shaped plate. A vertical rotating shaft is provided inside the cavity. Both ends of the rotating shaft are rotatably connected to the cavity wall through rolling bearings. One end of the rotating shaft penetrates outside the arc-shaped plate. A clamping mechanism is provided between the outer side of the positioning ring and the sliding groove.

[0006] Preferably, the locking mechanism includes a clamping rod. The clamping rod is slidably provided in the sliding groove. One end of the clamping rod extends outside the sliding groove. A clamping groove matching the clamping rod is opened on the outer ring wall of the positioning ring. A limiting block is fixedly provided on the rod wall of the clamping rod. A limiting groove matching the limiting block is opened on the groove wall of the sliding groove. A spring is fixedly provided on the side of the limiting block close to the cavity. A pull rope is provided in the through hole. Both ends of the pull rope are fixedly connected to the clamping rod and the shaft wall of the rotating shaft respectively.

[0007] Preferably, an inclined surface is opened at one end of the clamping rod located outside the sliding groove.

[0008] Preferably, the angle of the inclined plane is set to 45°.

[0009] Preferably, a runner is fixedly connected to one end of the rotating shaft located outside the arc-shaped plate.

[0010] Preferably, the circumferential wall of the runner is provided with anti-slip lines.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: For the filter port of the breathing mask, through the provided positioning ring, clamping rod, limiting block, spring, pull rope and rotating shaft, when replacing the filter layer, rotate the runner, the runner drives the rotating shaft to rotate, and while the pull rope is wound around the rotating shaft, it drives the clamping rod to move outside the clamping groove. The clamping rod drives the limiting block to compress the spring. At this time, the positioning ring can be rotated outside the filter port, and then the filter layer inside the filter port can be taken out and replaced. The filter layer with deteriorated filtering effect can be replaced quickly, improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the filter port of a breathing mask.

[0013] Figure 2 It is a schematic top view structural diagram of the filter port of a breathing mask.

[0014] Figure 3 For Figure 2 the enlarged schematic diagram of the partial A part in

[0015] In the figure: 1. Breathing mask; 2. Positioning ring; 3. Runner; 4. Arc-shaped plate; 5. Pull rope; 6. Rotating shaft; 7. Filter layer; 8. Limiting block; 9. Clamping rod; 10. Spring; 11. Filter port; 12. Air inlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1 to 3 , the present invention provides a technical solution: A filter port of a breathing mask, including an arc-shaped plate 4 fixedly arranged on the front side of the breathing mask 1. Filter ports 11 are provided on both sides of the arc-shaped plate 4. Air inlet holes 12 are provided at positions corresponding to the filter ports 11 on both sides of the breathing mask 1. A positioning ring 2 is slidably arranged on the side of the two filter ports 11 far from the air inlet holes 12. One side of the two positioning rings 2 facing away from each other is hinged to the filter port 11 through a pin shaft. A filter layer 7 is slidably arranged on the side of the interior of the filter port 11 close to the air inlet hole 12. Sliding grooves are provided on one side of the two filter ports 11 close to each other. Through holes are provided between the bottom of the two sliding grooves and the cavity. A cavity is provided in the middle of the arc-shaped plate 4. A vertical rotating shaft 6 is arranged inside the cavity. Both ends of the rotating shaft 6 are rotatably connected to the cavity wall through rolling bearings. One end of the rotating shaft 6 penetrates outside the arc-shaped plate 4. A clamping mechanism is provided between the outer side of the positioning ring 2 and the sliding groove.

[0018] The locking mechanism includes a clamping rod 9. The clamping rod 9 is slidably arranged in the sliding groove. One end of the clamping rod 9 extends outside the sliding groove. A clamping groove matching with the clamping rod 9 is provided on the outer ring wall of the positioning ring 2. A limiting block 8 is fixedly arranged on the rod wall of the clamping rod 9. A limiting groove matching with the limiting block 8 is provided on the groove wall of the sliding groove. A spring 10 is fixedly arranged on the side of the limiting block 8 close to the cavity. A pull rope 5 is arranged in the through hole. Both ends of the pull rope 5 are fixedly connected to the rod wall of the clamping rod 9 and the rotating shaft 6 respectively.

[0019] One end of the clamping rod 9 located outside the sliding groove is provided with an inclined surface, and the angle of the inclined surface is set to 45°. The inclined surface facilitates the clamping rod 9 to be clamped into the clamping groove.

[0020] One end of the rotating shaft 6 located outside the arc-shaped plate 4 is fixedly connected with a rotating wheel 3. Anti-slip lines are provided on the circumferential wall of the rotating wheel 3. The rotating wheel 3 facilitates the rotation of the rotating shaft 6.

[0021] When replacing the filter layer 7, rotate the rotating wheel 3. The rotating wheel 3 drives the rotating shaft 6 to rotate. While the pull rope 5 is wound around the rotating shaft 6, it drives the clamping rod 9 to move outside the clamping groove. The clamping rod 9 drives the limiting block 8 to compress the spring 10. At this time, the positioning ring 2 can be rotated outside the filter port 11. At this time, the filter layer 7 inside the filter port 11 can be taken out and replaced. The filter layer 7 with poor filtering effect can be quickly replaced, improving the convenience.

[0022] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter port of a breathing mask, which includes an arc-shaped plate (4) fixedly arranged on the front side of the breathing mask (1), and filter ports (11) are opened on both sides of the arc-shaped plate (4), and is characterized in that: Air intake holes (12) are formed at positions corresponding to the two sides of the breathing mask (1) and the filtering openings (11). A positioning ring (2) is slidably arranged on the side of each of the two filtering openings (11) away from the air intake holes (12). The two positioning rings (2) are hinged to the filtering openings (11) through pins on the sides facing away from each other. A filtering layer (7) is slidably arranged on the side of the interior of the filtering openings (11) close to the air intake holes (12). A chute is formed on each of the two sides where the filtering openings (11) are close to each other. A through hole is formed between the bottom of each of the two chutes and the cavity. A cavity is formed in the middle of the arc-shaped plate (4). A vertical rotating shaft (6) is arranged inside the cavity. Both ends of the rotating shaft (6) are rotatably connected to the wall of the cavity through rolling bearings. One end of the rotating shaft (6) penetrates outside the arc-shaped plate (4). A clamping mechanism is arranged between the outer side of the positioning ring (2) and the chute.

2. The filtering port of a breathing mask according to claim 1, characterized in that: The locking mechanism includes a clamping rod (9). The clamping rod (9) is slidably arranged in the chute. One end of the clamping rod (9) extends outside the chute. A clamping groove matching the clamping rod (9) is formed on the outer circumferential wall of the positioning ring (2). A limiting block (8) is fixedly arranged on the rod wall of the clamping rod (9). A limiting groove matching the limiting block (8) is formed on the wall of the chute. A spring (10) is fixedly arranged on the side of the limiting block (8) close to the cavity. A pull rope (5) is arranged in the through hole. The two ends of the pull rope (5) are fixedly connected to the rod walls of the clamping rod (9) and the rotating shaft (6) respectively.

3. The filtering port of a breathing mask according to claim 2, characterized in that: A slope is formed at one end of the clamping rod (9) located outside the chute.

4. The filtering port of a breathing mask according to claim 3, characterized in that: The angle of the slope is set to 45°.

5. The filter opening of a breathing mask according to claim 1, characterized in that: A runner (3) is fixedly connected to one end of the rotating shaft (6) located outside the arc-shaped plate (4).

6. The filtering port of a breathing mask according to claim 5, wherein: Anti-slip patterns are arranged on the circumferential wall of the runner (3).

Images