Electric air supply respirator with adjusting structure

Abstract

The utility model relates to the field of electric air supply respirators, and discloses an electric air supply respirator with an adjusting structure, which comprises an air feeder body, a hose and a hood, one end of the hose and the front side of the air feeder body are detachably mounted, the front end of the hood is communicated with a connecting pipe, the other end of the hose and the connecting pipe are detachably mounted, and the adjusting structure is arranged on the hood. Four sets of limiting buckles are fixedly installed on the back face of the head cover, and the front ends of every two sets of limiting buckles are fixedly installed on the top of the back face of the head cover. The adjusting belts, the adjusting rods, the gears and other structures are matched with one another, the two adjusting belts are arranged in a front-and-back crossed mode, the front side of one adjusting belt makes contact with the rear side of the other adjusting belt, the tightness of the two adjusting belts can be adjusted at the same time, and therefore the adjusting belts can be tightly attached to the head of a user, and the head of the user can be conveniently adjusted. And therefore, the device can adapt to people with different body types, and the situation that a user wears the device inappropriately is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electric air supply respirators, in particular to an electric air supply respirator with an adjustment structure. Background Art

[0002] An electric air supply long tube respirator uses a small air blower to supply fresh air meeting the atmospheric quality standard to the user through a non-toxic and odorless long tube. It is a protective equipment for protecting the safety of the human respiratory system. In an environment with a relatively high dust concentration, people can work easily and happily. It is the best personal protective equipment for preventing pneumoconiosis, applicable to a variety of dusty working places, applicable to preventing various particulate matters (dust, fog, smoke, etc.) and non-exceeding abnormal odor, not suitable for an oxygen-deficient working environment (an air environment with an oxygen content lower than 18% is an oxygen-deficient environment), not suitable for IDLH concentration (Immediately Dangerous to Life or Health concentration), and not suitable for working places where explosion may occur.

[0003] Electric air supply long tube respirators are all composed of a face mask, a corrugated tube, a waist belt, a 20-meter air guide hose, and an air blower. However, most of the existing face masks are put on the head through an elastic band. Since the elastic band is made of elastic material, when used by overweight people, uncomfortable situations such as neck strangulation may occur. When used by thinner people, the elastic band may be too loose, resulting in unstable wearing of the headgear. Moreover, the air entering the headgear cannot be adjusted, which will also cause discomfort to the user. For this reason, an electric air supply respirator with an adjustment structure is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides an electric air supply respirator with an adjustment structure, aiming to improve the uncomfortable wearing situations such as neck strangulation when used by overweight people in the prior art. When used by thinner people, the elastic band may be too loose, resulting in unstable wearing of the headgear. Moreover, the air entering the headgear cannot be adjusted, which will also cause discomfort to the user.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] It includes a blower body, a hose, and a hood. One end of the hose is detachably installed on the front side of the blower body. A connecting pipe is connected to the front end of the hood. The other end of the hose is detachably installed on the connecting pipe. Four groups of limit buckles are fixedly installed on the back of the hood. The front ends of every two groups of limit buckles are fixedly installed on the top of the back of the hood, and the front sides of the other two groups of limit buckles are fixedly installed on the bottom of the back of the hood. An adjusting belt is fixedly installed inside every two groups of limit buckles. The top of the adjusting belt penetrates to the top of the other two groups of limit buckles. A winding assembly for winding the adjusting belt is arranged on the top of the hood. An adjusting assembly for adjusting the gas entering the hood is arranged inside the connecting pipe;

[0007] As a further description of the above technical solution:

[0008] The winding assembly includes an adjusting rod. The adjusting rod is fixedly installed on the surface of the adjusting belt. A bearing seat is rotatably installed on the surface of the adjusting rod. The bottom of the bearing seat is fixedly installed on the top of the hood;

[0009] As a further description of the above technical solution:

[0010] A gear is fixedly installed on the left side of the surface of the adjusting rod. A connecting block is fixedly installed on the top of the hood. A sliding rod is slidably installed on one side of the connecting block. A clamping block is fixedly installed on the back of the sliding rod. The clamping block is clamped with the gear;

[0011] As a further description of the above technical solution:

[0012] A spring is sleeved on the surface of the sliding rod. The front end of the spring is fixedly installed on the back of the connecting block. The back of the spring is fixedly installed on the front side of the clamping block;

[0013] As a further description of the above technical solution:

[0014] A rotating disk is fixedly installed on the left side of the adjusting rod. A rotating block is fixedly installed on the surface of the rotating disk. An anti-slip sleeve is sleeved on the surface of the rotating block;

[0015] As a further description of the above technical solution:

[0016] The adjusting assembly includes an adjusting disk. The bottom of the adjusting disk is rotatably installed on the bottom of the inner wall of the connecting pipe through a shaft pin. A connecting rod is fixedly installed on the top of the adjusting disk. A conical pipe is fixedly installed inside the connecting pipe. The conical pipe is located on the back of the adjusting disk;

[0017] As a further description of the above technical solution:

[0018] The top of the connecting rod penetrates through the top of the connecting pipe, and a threaded block is threadedly installed on the surface of the connecting rod, and the bottom of the threaded block contacts the top of the connecting pipe.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, through the mutual cooperation of structures such as the adjusting belt, the adjusting rod and the gear, the two groups of adjusting belts are arranged in a front-back cross manner, and the front side of one group of adjusting belts contacts the rear side of the other group of adjusting belts. At this time, the tightness of the two groups of adjusting belts can be adjusted simultaneously, so that the adjusting belt can be closely attached to the user's head, thus adapting to people of different body types and not causing discomfort to the user when wearing.

[0021] 2. In the utility model, through the mutual cooperation of structures such as the adjusting disc, the connecting rod and the conical pipe, when the air entering the connecting pipe is too large, the connecting rod can be rotated at this time. The rotation of the connecting rod drives the adjusting disc to rotate, and the rotation of the adjusting disc can control the air flow rate entering the hood. At this time, after the adjusting disc rotates, the air pressure and flow rate passing through the adjusting disc will increase, and the air will be absorbed through the conical pipe. Since the front side of the conical pipe is arc-shaped and the middle part is conical, the air entering the conical pipe will be absorbed by the front side of the conical pipe, and then the air will enter the middle part of the conical pipe. Finally, the back side of the conical pipe is arc-shaped, and the air in the middle part of the conical pipe will diffuse to the rear end of the conical pipe, so as to disperse the air pressure and prevent the air pressure from being too large and entering the hood, which may cause discomfort to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic connection diagram of the air blower body and the hood proposed by the utility model;

[0023] Figure 2 is a rear view of the hood proposed by the utility model;

[0024] Figure 3 is a sectional view of the connecting pipe proposed by the utility model;

[0025] Figure 4 is Figure 2 an enlarged view of the structure at A in

[0026] Legend:

[0027] 1. Air blower body; 2. Hose; 3. Hood; 4. Connecting pipe; 5. Limit buckle; 6. Adjusting belt; 7. Adjusting rod; 8. Bearing seat; 9. Gear; 10. Connecting block; 11. Slide bar; 12. Clamping block; 13. Spring; 14. Rotating disc; 15. Rotating block; 16. Anti-slip sleeve; 17. Adjusting disc; 18. Connecting rod; 19. Conical pipe; 20. Threaded block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0029] Referring to Figures 1-4 , an embodiment provided by the present utility model includes a blower body 1, a hose 2, and a hood 3. One end of the hose 2 is detachably installed on the front side of the blower body 1. A connecting pipe 4 is connected to the front end of the hood 3. The other end of the hose 2 is detachably installed on the connecting pipe 4. First, the blower body 1 can be charged. When in a dusty working place, at this time, one end of the hose 2 can be rotated to enter the inside of the blower body 1. Since both ends of the hose 2 and the front side of the blower body 1 are threaded, and the hose 2 can be connected and sealed with the blower body 1. Then, the hood 3 is put on the user's head. Since the inside of the connecting pipe 4 is also threaded, at this time, the other end of the hose 2 can be rotated to enter the inside of the connecting pipe 4. Then, the hose 2 and the hood 3 can be sealed and installed. Finally, the blower body 1 can be started to allow fresh air to enter the hood 3 for the user to inhale. Four sets of limit buckles 5 are fixedly installed on the back of the hood 3. The front ends of every two sets of limit buckles 5 are fixedly installed on the top of the back of the hood 3, and the front sides of the other two sets of limit buckles 5 are fixedly installed on the bottom of the back of the hood 3. An adjustment belt 6 is fixedly installed inside every two sets of limit buckles 5. The top of the adjustment belt 6 penetrates to the top of the other two sets of limit buckles 5. A winding assembly for winding the adjustment belt 6 is provided on the top of the hood 3. The two adjustment belts 6 are arranged in a front-back cross manner. The front side of one adjustment belt 6 contacts the rear side of the other adjustment belt 6. At this time, the tightness of the two adjustment belts 6 can be adjusted simultaneously, so that the adjustment belt 6 can closely fit the user's head, thus adapting to people of different body types and not causing discomfort to the user when wearing. An adjustment assembly for adjusting the gas entering the hood 3 is provided inside the connecting pipe 4. Finally, when the air volume entering the inside of the hood 3 is too large, at this time, the air volume entering the hood 3 can be adjusted through the adjustment assembly, so that the user can adjust the most comfortable air intake volume by himself.

[0030] Referring to Figures 1-4, the rewinding assembly includes an adjusting rod 7 which is fixedly installed on the surface of the adjusting belt 6. A bearing seat 8 is rotatably installed on the surface of the adjusting rod 7, and the bottom of the bearing seat 8 is fixedly installed with the top of the head cover 3, which can improve the stability of the adjusting rod 7 when rewinding the adjusting belt 6 and prevent the adjusting rod 7 from shaking when rewinding the adjusting belt 6. A gear 9 is fixedly installed on the left side of the surface of the adjusting rod 7. A connecting block 10 is fixedly installed on the top of the head cover 3. A sliding rod 11 is slidably installed on one side of the connecting block 10. A clamping block 12 is fixedly installed on the back of the sliding rod 11, and the clamping block 12 is clamped with the gear 9. At this time, when the adjusting rod 7 rotates, it will also drive the gear 9 to rotate. When the adjusting rod 7 rewinds the adjusting belt 6 to a suitable position, the sliding rod 11 can be pushed backward at this time. The movement of the sliding rod 11 drives the clamping block 12 to contact the gear 9, so that the gear 9 can be limited at this time, thereby preventing the adjusting belt 6 from being adjusted to a suitable position and preventing the adjusting rod 7 from reversing. A spring 13 is sleeved on the surface of the sliding rod 11. The front end of the spring 13 is fixedly installed with the back of the connecting block 10, and the back of the spring 13 is fixedly installed with the front side of the clamping block 12, which can keep the clamping block 12 in contact with the gear 9 all the time, thereby improving the stability of the clamping block 12 when limiting the gear 9. A rotating disk 14 is fixedly installed on the left side of the adjusting rod 7. A rotating block 15 is fixedly installed on the surface of the rotating disk 14. An anti-slip sleeve 16 is sleeved on the surface of the rotating block 15. When the anti-slip sleeve 16 is rotated, it can drive the rotating block 15 to rotate. The rotation of the rotating block 15 drives the rotating disk 14 to rotate, and the rotation of the rotating disk 14 can drive the adjusting rod 7 to rotate, thereby increasing the contact area when rotating the adjusting rod 7 and improving the convenience of rotating the adjusting rod 7.

[0031] Refer to Figures 1-4, the adjusting component includes an adjusting disc 17. The bottom of the adjusting disc 17 is rotatably installed through a shaft pin and the bottom of the inner wall of the connecting pipe 4. A connecting rod 18 is fixedly installed at the top of the adjusting disc 17. A conical pipe 19 is fixedly installed inside the connecting pipe 4. The conical pipe 19 is located on the back of the adjusting disc 17. When the air entering the connecting pipe 4 is too large, the connecting rod 18 can be rotated at this time. The rotation of the connecting rod 18 drives the rotation of the adjusting disc 17. The rotation of the adjusting disc 17 can control the air flow rate entering the hood 3. At this time, after the adjusting disc 17 rotates, the air pressure and flow rate passing through the adjusting disc 17 will increase. The air will be absorbed through the conical pipe 19. Since the front side of the conical pipe 19 is arc-shaped and the middle part is conical, the air entering the conical pipe 19 will be absorbed by the front side of the conical pipe 19, and then the air will enter the middle part of the conical pipe 19. Finally, the back side of the conical pipe 19 is arc-shaped, and the air in the middle part of the conical pipe 19 will diffuse to the rear end of the conical pipe 19, so as to disperse the air pressure and prevent the air pressure from being too large and entering the hood 3, which may cause discomfort to the user. The top of the connecting rod 18 penetrates through the top of the connecting pipe 4. A threaded block 20 is threadedly installed on the surface of the connecting rod 18. The bottom of the threaded block 20 contacts the top of the connecting pipe 4. When the threaded block 20 can be rotated, it will contact the top of the connecting pipe 4, so as to limit the connecting rod 18 and prevent the adjusting disc 17 from driving the connecting rod 18 to rotate when rotating, resulting in the inability to control the angle of the adjusting disc 17, and thus the inability to control the amount of air entering the hood 3.

[0032] Working principle: First, the blower body 1 can be charged. When in a dusty working place, one end of the hose 2 can be rotated to enter the inside of the blower body 1. Since both ends of the hose 2 and the front side of the blower body 1 are threaded, and the hose 2 can be connected and sealed with the blower body 1. Then, the hood 3 is put on the user's head. Since the inside of the connecting pipe 4 is also threaded, the other end of the hose 2 can be rotated to enter the inside of the connecting pipe 4. Then, the hose 2 and the hood 3 can be sealed and installed. Finally, the blower body 1 can be started to allow fresh air to enter the hood 3. At this time, the two adjusting belts 6 are arranged in a front-back cross manner. Then, the rotating disk 14 can be rotated. The rotation of the rotating disk will drive the adjusting rod 7 to rotate. The rotation of the adjusting rod 7 can wind up the adjusting belt 6. When the adjusting belt 6 is adjusted to a comfortable tightness for the user, the block 12 can be pushed backward to limit the gear 9 and prevent the adjusting rod 7 from rotating. When the air entering the connecting pipe 4 is too large, the connecting rod 18 can be rotated. The rotation of the connecting rod 18 drives the adjusting disk 17 to rotate. The rotation of the adjusting disk 17 can control the air flow entering the hood 3. At this time, after the adjusting disk 17 rotates, the air pressure and flow rate through the adjusting disk 17 will increase. The air will be absorbed through the conical pipe 19. Since the front side of the conical pipe 19 is arc-shaped and the middle part is conical, the air entering the conical pipe 19 will be absorbed by the front side of the conical pipe 19. Then, the air will enter the middle part of the conical pipe 19. Finally, the back side of the conical pipe 19 is arc-shaped, and the air in the middle part of the conical pipe 19 will diffuse to the rear end of the conical pipe 19, so as to disperse the air pressure.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric air-supply respirator with an adjusting structure, comprising a blower body (1), a hose (2), and a hood (3), characterized in that: One end of the hose (2) is detachably installed on the front side of the blower body (1). A connecting pipe (4) is connected to the front end of the hood (3). The other end of the hose (2) is detachably installed on the connecting pipe (4). Four groups of limit buckles (5) are fixedly installed on the back surface of the hood (3). The front ends of every two groups of the limit buckles (5) are fixedly installed on the top of the back surface of the hood (3), and the front sides of the other two groups of the limit buckles (5) are fixedly installed on the bottom of the back surface of the hood (3). An adjusting belt (6) is fixedly installed inside every two groups of the limit buckles (5). The top of the adjusting belt (6) penetrates through to the top of the other two groups of the limit buckles (5). A winding assembly for winding the adjusting belt (6) is arranged on the top of the hood (3). An adjusting assembly for adjusting the gas entering the hood (3) is arranged inside the connecting pipe (4).

2. The electric air-supply respirator with an adjustment structure according to claim 1, characterized in that: The winding assembly includes an adjusting rod (7). The adjusting rod (7) is fixedly installed on the surface of the adjusting belt (6). A bearing seat (8) is rotatably installed on the surface of the adjusting rod (7). The bottom of the bearing seat (8) is fixedly installed on the top of the hood (3).

3. The electric air supply respirator with an adjustment structure according to claim 2, wherein: A gear (9) is fixedly installed on the left side of the surface of the adjusting rod (7). A connecting block (10) is fixedly installed on the top of the hood (3). A sliding rod (11) is slidably installed on one side of the connecting block (10). A clamping block (12) is fixedly installed on the back surface of the sliding rod (11). The clamping block (12) is clamped with the gear (9).

4. The electric air supply respirator with an adjustment structure according to claim 3, characterized in that: A spring (13) is sleeved on the surface of the sliding rod (11). The front end of the spring (13) is fixedly installed on the back surface of the connecting block (10), and the back surface of the spring (13) is fixedly installed on the front side of the clamping block (12).

5. The electric air supply respirator with an adjustment structure according to claim 2, characterized in that: A rotating disc (14) is fixedly installed on the left side of the adjusting rod (7). A rotating block (15) is fixedly installed on the surface of the rotating disc (14). An anti-slip sleeve (16) is sleeved on the surface of the rotating block (15).

6. The electric air-supply respirator with an adjustment structure according to claim 1, characterized in that: The adjusting assembly includes an adjusting disc (17). The bottom of the adjusting disc (17) is rotatably installed on the bottom of the inner wall of the connecting pipe (4) through a shaft pin. A connecting rod (18) is fixedly installed on the top of the adjusting disc (17). A tapered pipe (19) is fixedly installed inside the connecting pipe (4). The tapered pipe (19) is located on the back surface of the adjusting disc (17).

7. The electric air-supply respirator with an adjusting structure according to claim 6, wherein: The top of the connecting rod (18) penetrates through to the top of the connecting pipe (4). A threaded block (20) is threadedly installed on the surface of the connecting rod (18). The bottom of the threaded block (20) contacts the top of the connecting pipe (4).

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