Small secondary respirator used for portable emergency air source

Abstract

The utility model belongs to the technical field of secondary respirators, and particularly relates to a small secondary respirator used for a portable emergency air source, which comprises a respirator body, an air bin used for air exchange is formed in the respirator body, an elastic piece and an air inlet valve are respectively arranged on the front side and the side wall of the respirator body, and the air inlet valve is arranged in the air bin. A lever connected with the elastic piece and the end of the air inlet valve is arranged in the air bin, the air inlet valve comprises a valve body and a valve rod used for conducting on-off adjustment on the valve body, the lever is used for driving the valve rod to conduct on-off adjustment, and the elastic piece is sequentially provided with a threaded cap and an elastic film from outside to inside. The elastic piece and the air inlet valve can be connected in an on-off mode through the lever principle of the lever, the size of parts is reduced as much as possible under the condition that the air volume is guaranteed, and the device is small and portable. The number of parts is reduced as much as possible under the condition that structural stability is guaranteed, and the structure is simple, clear and not prone to damage.

Description

Technical Field

[0001] The utility model belongs to the technical field of secondary respirators, and in particular relates to a small secondary respirator used for a portable emergency air source. Background Art

[0002] When divers use a portable emergency air source, they need to use a secondary respirator to decompress the medium-pressure gas output by the first-stage decompressor into normal-pressure gas that can be breathed by the human body.

[0003] The secondary respirators currently on the market are large in size and complex in structure. As a portable emergency air source, the secondary respirator is not easy to carry and has a complex structure and is easily damaged. In addition, the existing secondary respirators automatically exchange gas through an elastic membrane, and the existing secondary respirators do not have a device for manually operating the elastic membrane. When the secondary respirator is damaged in water, it will affect the user's use, greatly reducing the practicability of the equipment. Utility Model Content

[0004] The utility model aims to provide a small-sized secondary respirator for use with a portable emergency air source, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small-sized secondary respirator for use with a portable emergency air source, comprising: a respirator body, a gas chamber for gas exchange formed in the respirator body, elastic parts and an air inlet valve respectively installed on the front side and side wall of the respirator body, a lever connecting the elastic part and the end of the air inlet valve is provided in the air chamber, the air inlet valve comprises a valve body and a valve stem for on-off adjustment of the valve body, and the lever is used to drive the valve stem for on-off adjustment.

[0006] Preferably, the elastic member is provided with a threaded cap and an elastic membrane in sequence from the outside to the inside, the threaded cap is used to screw the elastic membrane into the air chamber, and a pressing mechanism is provided on the outside of the threaded cap, and the pressing mechanism is used to manually press one end of the lever.

[0007] Preferably, the pressing mechanism includes a mounting seat and a push block, one end of the mounting seat is connected and installed on the outside of the threaded nut, and the push block is movably installed in the axial direction inside the mounting seat, a pressing piece passing through the mounting seat is provided on the outside of the mounting seat, and one end of the pressing piece is installed on the push block, a spring is installed in the mounting seat and is sleeved on the pressing piece, and one end of the spring is connected to the push block.

[0008] Preferably, the pressing member comprises a pressing block and a pressing rod which are sequentially installed from the outside to the inside, and one end of the pressing rod is installed on the pushing block.

[0009] Preferably, a protective cover is installed on the outside of the pressing block for protection, an external threaded seat for installing the protective cover is provided on the mounting seat, and a waterproof cover for waterproofing is provided between the external threaded seat and the pressing block.

[0010] Preferably, the top of the protective sleeve is installed at the edge of the bottom of the pressing block, a flange is provided on the outer side of the bottom end of the protective sleeve, a mounting sleeve abutting against the flange is provided on the outer side of the protective sleeve, and an internal thread groove screwed on the external thread seat is provided on the inner side of the bottom end of the mounting sleeve.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The utility model adds a lever, and the lever principle of the lever can be used to connect and disconnect the elastic member and the intake valve, thereby minimizing the size of the components while ensuring the gas volume, thereby making it compact and portable; while ensuring the stability of the structure, the number of components is reduced as much as possible, making the structure simple, clear and not easy to damage.

[0013] (2) The utility model adds a pressing mechanism, which facilitates manual operation of one end of the lever, thereby enabling the device to manually perform gas exchange after the elastic membrane is damaged.

[0014] (3) The utility model has an additional protective cover, which can protect the pressing mechanism. When the pressing mechanism is not in use, the protective cover can prevent the pressing mechanism from being accidentally touched. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cooperation between the pressing mechanism and the protective cover of the utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 A three-dimensional diagram of the installation sleeve of the utility model;

[0019] In the figure: 1. Inlet valve; 2. Air chamber; 3. Respirator body; 4. Lever; 5. Threaded cap; 6. Elastic membrane; 7. Push block; 8. Spring; 9. External thread seat; 10. Press block; 11. Press rod; 12. Waterproof cover; 13. Flange; 14. Mounting seat; 15. Mounting cover; 16. Internal thread groove; 17. Protective cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] refer to Figure 1 As shown, the utility model provides a small-sized secondary respirator for use with a portable emergency air source, comprising: a respirator body 3, a gas chamber 2 for gas exchange formed in the respirator body 3, an elastic member and an air inlet valve 1 respectively mounted on the front side and side wall of the respirator body 3, a lever 4 connecting the elastic member and the end of the air inlet valve 1 is provided in the air chamber 2, the air inlet valve 1 comprises a valve body and a valve stem for on-off regulation of the valve body, and the lever 4 is used to drive the valve stem for on-off regulation.

[0022] As mentioned above, when using the respirator body 3, air inlet valve 1, elastic member and lever 4 provided by the utility model, the air inlet valve 1 includes an air inlet connector, a valve seat, a valve pad, a pressing spring, a valve body and a valve stem from the outside to the inside, and one end of the lever 4 abuts against the valve stem. When the respirator body 3 is in use, the elastic member is activated to drive the lever 4 to rotate, thereby driving the valve stem to move in the axial direction in the valve body through the lever 4, so as to facilitate the passage of gas through the valve body. The valve body is connected to the external air pipe through the air inlet connector, and the gas channel of the valve body is blocked by the valve seat, the valve pad and the pressing spring. By arranging the lever 4 connecting the valve stem and the elastic member in the gas chamber 2, the number of parts in the equipment can be reduced, thereby reducing the size of the equipment, and minimizing the number of parts while ensuring the stability of the structure, so that the structure is simple, clear and not easy to damage.

[0023] In the present utility model, combined with Figure 1 As shown, the elastic member of this embodiment is provided with a threaded cap 5 and an elastic membrane 6 from the outside to the inside, the threaded cap 5 is used to screw the elastic membrane 6 into the air chamber 2, and a pressing mechanism is provided on the outside of the threaded cap 5, and the pressing mechanism is used to manually press one end of the lever 4.

[0024] Combination Figure 1-2 As shown, the pressing mechanism includes a mounting seat 14 and a push block 7. One end of the mounting seat 14 is connected and installed on the outside of the threaded nut 5. The push block 7 is movably installed in the axial direction inside the mounting seat 14. A pressing piece that penetrates the mounting seat 14 is provided on the outside of the mounting seat 14, and one end of the pressing piece is installed on the push block 7. A spring 8 is installed in the mounting seat 14 and is sleeved on the pressing piece, and one end of the spring 8 is connected to the push block 7.

[0025] As mentioned above, when using the elastic member and pressing mechanism provided by the utility model, the elastic membrane 6 in the elastic member is detachably mounted on the respirator body 3 through the threaded cap 5, so that the elastic membrane 6 can be installed in the air chamber 2, and a mounting position is provided for the push block 7 on the threaded cap 5 through the mounting seat 14. The push block 7 can be driven by the pressing member to move along the axial direction on the mounting seat 14, so that the push block 7 is pressed on the lever 4, and then the lever 4 is manually pressed. When the pressing member is not subjected to force, the push block 7 is automatically reset by the elastic force of the spring 8, so that the lever 4 is reset, and the device can repeatedly press the lever 4 manually.

[0026] Further, in order to facilitate the adjustment of the position of the push block 7, refer to Figure 2 As shown, the pressing member includes a pressing block 10 and a pressing rod 11 which are sequentially installed from the outside to the inside, and one end of the pressing rod 11 is installed on the push block 7. The pressing block 10 is connected to the push block 7 through the pressing rod 11, and the push block 7 can be driven to move toward one side of the lever 4 in the mounting seat 14 by pressing the pressing block 10, so that the lever 4 can be pressed by the push block 7.

[0027] In the present utility model, combined with Figure 2-4 As shown, a protective cover 17 is installed on the outside of the pressing block 10 of this embodiment for protection, an external threaded seat 9 for installing the protective cover 17 is provided on the mounting seat 14, and a waterproof cover 12 is provided between the external threaded seat 9 and the pressing block 10 for waterproofing.

[0028] As mentioned above, when using the protective cover 17 and the waterproof cover 12 provided by the utility model, the waterproof cover 12 is made of rubber. The waterproof cover 12 is used to waterproof the outside of the gap between the connecting rod and the external threaded seat 9, thereby preventing external water from entering the interior of the device through the gap. The protective cover 17 can protect the pressing block 10 to prevent the pressing block 10 from being accidentally touched when not in use.

[0029] Further, in order to facilitate the detachable installation of one end of the waterproof cover 12 on the external thread seat 9, refer to Figure 2-4 As shown, the top of the protective sleeve 17 is installed at the edge of the bottom of the pressing block 10, the outer side of the bottom end of the protective sleeve 17 is provided with a flange 13, the outer sleeve of the protective sleeve 17 is provided with a mounting sleeve 15 abutting against the flange 13, and the inner side of the bottom end of the mounting sleeve 15 is provided with an internal thread groove 16 screwed on the external thread seat 9. The mounting sleeve 15 is set on the waterproof sleeve 12, and the inner wall of the mounting sleeve 15 abuts against the flange 13. When the mounting sleeve 15 is screwed on the external thread seat 9 through the internal thread groove 16, the flange 13 is pressed by the mounting sleeve 15 to fill the gap between the mounting sleeve 15 and the external thread seat 9 to avoid leakage in the gap.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small secondary respirator for use with a portable emergency air source, characterized in that: include: A respirator body (3) is formed with a gas chamber (2) for gas exchange, an elastic member and an air inlet valve (1) are respectively installed on the front side and side wall of the respirator body (3), a lever (4) connecting the elastic member and the end of the air inlet valve (1) is provided in the air chamber (2), the air inlet valve (1) includes a valve body and a valve stem for on-off adjustment of the valve body, and the lever (4) is used to drive the valve stem for on-off adjustment.

2. A small-sized secondary respirator for use with a portable emergency air source according to claim 1, characterized in that: The elastic member is provided with a threaded cap (5) and an elastic membrane (6) in sequence from the outside to the inside. The threaded cap (5) is used to screw the elastic membrane (6) into the gas chamber (2). A pressing mechanism is provided on the outside of the threaded cap (5). The pressing mechanism is used to manually press one end of the lever (4).

3. A small-sized secondary respirator for use with a portable emergency air source according to claim 2, characterized in that: The pressing mechanism comprises a mounting seat (14) and a push block (7); one end of the mounting seat (14) is connected and mounted on the outside of the threaded cap (5); the push block (7) is movably mounted in the axial direction inside the mounting seat (14); a pressing piece penetrating the mounting seat (14) is provided on the outside of the mounting seat (14); one end of the pressing piece is mounted on the push block (7); a spring (8) sleeved on the pressing piece is installed in the mounting seat (14); one end of the spring (8) is connected to the push block (7).

4. A small-sized secondary respirator for use with a portable emergency air source according to claim 3, characterized in that: The pressing member comprises a pressing block (10) and a pressing rod (11) which are installed in sequence from the outside to the inside, and one end of the pressing rod (11) is installed on the pushing block (7).

5. A small-sized secondary respirator for use with a portable emergency air source according to claim 4, characterized in that: A protective cover (17) for protection is also installed on the outside of the pressing block (10); an external threaded seat (9) for installing the protective cover (17) is provided on the mounting seat (14); and a waterproof cover (12) for waterproofing is provided between the external threaded seat (9) and the pressing block (10).

6. A small-sized secondary respirator for use with a portable emergency air source according to claim 5, characterized in that: The top of the protective sleeve (17) is mounted at the edge of the bottom of the pressing block (10); a flange (13) is provided on the outer side of the bottom end of the protective sleeve (17); a mounting sleeve (15) abutting against the flange (13) is provided on the outer side of the protective sleeve (17); and an internal thread groove (16) screwed on the external thread seat (9) is provided on the inner side of the bottom end of the mounting sleeve (15).

Images