Isolated compressed oxygen self-rescuer

Abstract

The utility model belongs to the technical field of self-rescuers, and particularly relates to an isolated compressed oxygen self-rescuer which comprises a body and an upper cover detachably installed on the body, the upper cover comprises an observation window located on one side of the upper end of the upper cover and comprising tempered glass, a first covered edge and a second covered edge, and the first covered edge and the second covered edge cover the edges of the upper side and the lower side of the tempered glass respectively; the accommodating groove I is formed in one side of the upper end of the upper cover; the transparent cover plate is clamped in the accommodating groove I; wherein the first wrapping edge, the second wrapping edge and the tempered glass are formed into a whole through injection molding. Compared with a traditional observation window structure, the observation window has the advantages that the upper cover, the first covered edge and the second covered edge are integrally formed in an injection molding mode through the tempered glass, and the observation window is firmer, more reliable and good in stability; through the arrangement of the first containing groove, the installation requirement of an existing self-rescuer for the transparent cover plate and the electronic tag is met, a user can conveniently and rapidly obtain device information, meanwhile, the electronic tag can be effectively prevented from being directly influenced by the external environment, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of self-rescuers, in particular to an isolated compressed oxygen self-rescuer. Background Art

[0002] Currently, self-rescuers on the market generally suffer from a limited functionality of their covers. As a vital life-saving device, self-rescuers are primarily used for emergency escape and breathing support in enclosed environments such as mines and tunnels. However, most existing self-rescuer covers only offer basic closing and opening functions, resulting in a relatively limited functionality. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide an isolated compressed oxygen self-rescuer.

[0004] The technical solution of the utility model is achieved as follows: an isolated compressed oxygen self-rescuer, comprising a body and an upper cover detachably mounted on the body, characterized in that the upper cover comprises:

[0005] An observation window is located on one side of the upper end of the upper cover, and includes a tempered glass and a first edging and a second edging respectively covering the upper and lower edges of the tempered glass;

[0006] The first receiving groove is provided on one side of the upper end of the upper cover;

[0007] The transparent cover is clamped in the first receiving groove, and the transparent cover is separated from the bottom of the first receiving groove to form a label receiving area;

[0008] The first edge package and the second edge package are injection-molded into a whole with the tempered glass.

[0009] Furthermore, the first receiving groove includes a rectangular portion and arc-shaped portions located on both sides of the rectangular portion, and a snap-fitting hole that matches the transparent cover is opened at the bottom of the arc-shaped portion.

[0010] Furthermore, a limiting groove is provided on one side of the bottom of the rectangular portion adjacent to the arc-shaped portion;

[0011] The transparent cover includes a plate body and also includes limiting blocks connected to both sides of the lower end of the plate body for inserting into the limiting grooves.

[0012] Furthermore, the board body also includes:

[0013] There are two elastic clamping parts, which are respectively located on both sides of the lower end of the plate body and are connected with the clamping holes in a one-to-one correspondence.

[0014] Furthermore, each elastic clamping portion includes:

[0015] Two connecting columns are connected to the lower end of the plate body and are semi-cylindrical in shape;

[0016] A snap-on barb connected to the lower ends of the two connecting columns;

[0017] Wherein, a distance is provided between the two connecting columns.

[0018] Furthermore, the upper edge of the body is provided with a mounting surface 1, and the lower edge of the upper cover is provided with a mounting surface 2 that matches the mounting surface 1, and the mounting surface 2 includes:

[0019] The first protrusion is fixedly connected to the middle portion of the lower end of the second mounting surface in a circumferential direction;

[0020] A stepped groove 1 is formed on a lower edge of the radially inner side of the raised portion 1, and a sealing ring 1 is adhered in the stepped groove 1;

[0021] Mounting surface 1 includes:

[0022] Step groove three, for inserting and mating with protrusion one;

[0023] Step groove four, which is sequentially opened from the outer edge of the mounting surface one to the inner edge thereof, and has step groove three and step groove four arranged along the circumference of the mounting surface, and a sealing ring two is adhered to the inner wall of the step groove four;

[0024] Among them, when the protrusion one is inserted into the stepped groove three, the bottom of the protrusion one abuts against the bottom of the stepped groove three, the radial outer side of the protrusion one abuts against the groove wall of the stepped groove three, and the lower end of the sealing ring abuts against the upper end of the sealing ring two.

[0025] Furthermore, it also includes:

[0026] Elastic snap ring: a ring groove is provided on the inner edge of the lower end of the upper cover, and an elastic snap ring is clamped in the ring groove;

[0027] There are two elastic pressure plates, which are arranged oppositely on both sides of the raised portion, with the lower ends of the elastic pressure plates extending out of the raised portion, and the upper ends of the elastic pressure plates being provided with a bent portion connected and fixed with an elastic clamp;

[0028] The second protrusion is fixedly connected to the bottom of the fourth step groove in the circumferential direction, and a receiving area for the lower end of the elastic pressure plate to be inserted is formed between the second protrusion and the second sealing ring;

[0029] The radial inner side of the elastic pressure plate and the radial outer side of the second protrusion are respectively provided with a first inclined surface and a second inclined surface that cooperate with each other;

[0030] When the protrusion 1 abuts against the bottom of the stepped groove 3, the lower end of the elastic pressure plate abuts against the bottom of the accommodating area, and the radial outer side of the elastic pressure plate abuts against the radial inner sides of the sealing ring 1 and the sealing ring 2.

[0031] Furthermore, it also includes:

[0032] The gas storage tank is detachably fixed on the upper end of the body;

[0033] The pressure gauge is threaded onto the upper end of the gas tank and is located directly below the observation window;

[0034] Among them, the air outlet end of the gas storage tank is threaded with a pressure reducer, and the air outlet end of the pressure reducer is connected to a breathing bag.

[0035] Furthermore, the pressure reducer includes:

[0036] The pressure reducer housing is threadedly connected to the gas outlet end of the gas storage tank;

[0037] The air outlet is provided at the end of the pressure reducer housing away from the gas tank;

[0038] The air supply hole is arranged inside the pressure reducer housing and is connected to the air outlet end of the air storage tank;

[0039] The adjusting ring is sleeved on the outer side of the pressure reducer shell and can rotate relative to the pressure reducer shell to adjust the opening and closing of the air outlet.

[0040] Furthermore, it also includes:

[0041] A radial hole is provided on the radial outer side of the pressure reducer housing and is connected to the air outlet;

[0042] The plug is slidably mounted in the radial hole, and a passage between the radial hole and the air supply hole is provided below the plug;

[0043] A spring is sleeved on the radial outer side of the plug, one end of the spring abuts against the plug, and the other end abuts against the bottom of the radial hole, and the plug at least partially extends out of the upper opening of the radial hole through the spring;

[0044] Among them, a receiving groove 2 is provided on the radial inner side of the adjustment ring to cooperate with the plug, and an inclined guide surface for squeezing the plug is provided on one side of the receiving groove 2. When the adjustment ring rotates, the plug can move back and forth along its axial direction to block or open the channel.

[0045] The beneficial effects of the utility model are:

[0046] By adopting the above technical solution, the upper cover is integrally injection-molded with the tempered glass, the first edge, and the second edge. Compared with the traditional observation window structure, it is more solid and reliable, with good stability. In addition, the tempered glass used as the observation window is wear-resistant and impact-resistant, effectively reducing blurring and damage caused by wear.

[0047] Secondly, the setting of the receiving slot 1 meets the installation requirements of the existing self-rescuer for the transparent cover and the electronic tag. The electronic tag can be placed in the label receiving area between the receiving slot 1 and the transparent cover, which is convenient for users to quickly obtain device information (such as the specification and model information, production date or shelf life of the device, etc.). At the same time, it can effectively protect the electronic tag from the direct influence of the external environment and improve its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0049] Figure 1 This is a schematic diagram of the upper cover structure of the self-rescuer according to the specific embodiment of the utility model. Figure 1 ;

[0050] Figure 2 This is a schematic diagram of the upper cover structure of the self-rescuer according to the specific embodiment of the utility model. Figure 2 ;

[0051] Figure 3 This is a schematic diagram of the upper cover structure of the self-rescuer according to the specific embodiment of the utility model. Figure 3 ;

[0052] Figure 4 This is a schematic diagram of the transparent cover structure of a specific embodiment of the utility model;

[0053] Figure 5 This is a schematic diagram of the upper cover structure of the self-rescuer according to the specific embodiment of the utility model. Figure 4 ;

[0054] Figure 6 This is a partial cross-sectional view of the fitting portion between the upper cover and the body of the self-rescuer according to a specific embodiment of the present utility model;

[0055] Figure 7 This is a schematic diagram of the matching structure of the self-rescuer upper cover and the gas storage tank in a specific implementation manner of the utility model. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0058] Example 1:

[0059] like Figures 1 to 7 As shown, the utility model discloses an isolated compressed oxygen self-rescuer, comprising a body and an upper cover 1 detachably mounted on the body, the upper cover 1 comprising:

[0060] The observation window 2 is located on one side of the upper end of the upper cover 1 and includes a tempered glass and a first edging and a second edging respectively covering the upper and lower edges of the tempered glass;

[0061] A receiving groove 3 is provided on one side of the upper end of the upper cover 1;

[0062] The transparent cover plate 4 is clamped in the receiving groove 3, and the transparent cover plate 4 and the bottom of the receiving groove 3 are separated to form a label receiving area;

[0063] The first and second edges are molded together with the tempered glass to form a whole.

[0064] By adopting the above technical solution, the upper cover is integrally injection-molded with the tempered glass, the first edge, and the second edge. Compared with the traditional observation window structure, it is more solid and reliable, with good stability. In addition, the tempered glass used as the observation window is wear-resistant and impact-resistant, effectively reducing blurring and damage caused by wear.

[0065] Secondly, the setting of the receiving groove 3 meets the installation requirements of the existing self-rescuer for the transparent cover and the electronic tag. The electronic tag can be placed in the label receiving area between the receiving groove 3 and the transparent cover, which is convenient for users to quickly obtain device information (such as the specification and model information, production date or shelf life of the device, etc.). At the same time, it can effectively protect the electronic tag from the direct influence of the external environment and improve its service life.

[0066] Example 2:

[0067] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] Furthermore, the accommodating groove 1 3 includes a rectangular portion and arc-shaped portions 31 located on both sides of the rectangular portion. A snap-fitting hole 32 that matches the transparent cover plate 4 is formed at the bottom of the arc-shaped portion 31 .

[0069] By adopting the above technical solution, the arrangement of the snap-fitting holes on the arc-shaped portion facilitates the coordinated installation of the transparent cover.

[0070] Example 3:

[0071] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] Furthermore, a limiting groove 33 is provided on one side of the bottom of the rectangular portion adjacent to the arc-shaped portion 31;

[0073] The transparent cover includes a plate body and also includes limiting blocks connected to both sides of the lower end of the plate body for inserting into the limiting grooves.

[0074] In the above technical solution, the limit block is integrally connected and fixed to the plate body;

[0075] By adopting the above technical solution, the setting of the limiting groove and the limiting block further improves the firmness of the cooperation between the transparent cover and the receiving groove 3, and it is not easy to fall off.

[0076] Example 4:

[0077] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0078] Furthermore, the board body also includes:

[0079] There are two elastic clamping parts, which are respectively located on both sides of the lower end of the plate body and are connected to the clamping holes 32 in a one-to-one correspondence.

[0080] In the above technical solution, the elastic clamping portion is integrally formed with the plate body;

[0081] By adopting the above technical solution and providing the elastic clamping portion, it is easy to connect with the clamping portion and also easy to disassemble.

[0082] Example 5:

[0083] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0084] Furthermore, each elastic clamping portion includes:

[0085] Two connecting columns 42 are connected to the lower end of the plate and are semi-cylindrical in shape;

[0086] The snap-fit ​​barb is connected to the lower ends of the two connecting posts 42;

[0087] There is a distance between the two connecting pillars 42 .

[0088] In the above technical solution, the two connecting posts and the clamping barbs form a straight nut structure;

[0089] By adopting the above technical solution, when the snap hook passes through the snap hole, the hole wall of the snap hole is deformed by squeezing the two connecting columns through the snap hook, so that the outer diameter of the lower end of the elastic snap part can be reduced, and the connecting column is reset after passing through the snap hole, and the snap hook is located on the lower hole mouth of the snap hole.

[0090] Example 6:

[0091] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0092] Furthermore, the upper edge of the body is provided with a mounting surface 1, and the lower edge of the upper cover 1 is provided with a mounting surface 2 that matches the mounting surface 1. The mounting surface 2 includes:

[0093] The raised portion 5 is fixedly connected to the middle portion of the lower end of the second mounting surface in a circumferential direction;

[0094] A stepped groove 51 is formed on the lower edge of the radially inner side of the protrusion 5, and a sealing ring 52 is bonded in the stepped groove 51;

[0095] Mounting surface 1 includes:

[0096] Step groove three 53, for insertion and engagement of protrusion one 5;

[0097] Step groove 4 54 is provided with step groove 3 53 and step groove 4 54 arranged along the circumference of the mounting surface in sequence from the outer edge of the mounting surface 1 to the inner edge thereof, and a sealing ring 2 55 is adhered to the inner wall of the step groove 4;

[0098] Among them, when the protrusion 1 5 is inserted into the stepped groove 3 53, the bottom of the protrusion 1 5 abuts against the bottom of the stepped groove 3 53, the radial outer side of the protrusion 1 5 abuts against the groove wall of the stepped groove 3 53, and the lower end of the sealing ring 1 52 abuts against the upper end of the sealing ring 2 55.

[0099] In the above technical solution, the first raised portion is integrally formed with the upper cover, and the second raised portion is integrally formed with the body;

[0100] By adopting the above technical solution, when the upper cover and the main body are fixed by the lock buckle, the protrusion 1 is inserted into the mounting surface 1 and cooperates with the step groove 1, so that the sealing ring 1 and the sealing ring 2 abut against each other to perform auxiliary sealing, thereby extending the service life of the equipment and maintaining the stability and cleanliness of the interior of the equipment, providing more reliable protection for future use.

[0101] Example 7:

[0102] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0103] Furthermore, it also includes:

[0104] Elastic snap ring 61, a ring groove 6 is formed on the inner edge of the lower end of the upper cover 1, and an elastic snap ring 61 is clamped in the ring groove 6;

[0105] There are two elastic pressure plates 62, which are arranged on both sides of the protrusion 5. The lower ends of the elastic pressure plates 62 extend out of the protrusion 5, and the upper ends of the elastic pressure plates 62 are provided with a bent portion connected and fixed to the elastic clamp 61;

[0106] The second protrusion 63 is circumferentially fixedly connected to the bottom of the fourth stepped groove 54, and a receiving area for the lower end of the elastic pressure plate 62 to be inserted is formed between the second protrusion 63 and the second sealing ring 55;

[0107] The radial inner side of the elastic pressure plate 62 and the radial outer side of the second protrusion 63 are respectively provided with a first inclined surface and a second inclined surface that cooperate with each other;

[0108] When the protrusion 1 5 abuts against the bottom of the stepped groove 3 53 , the lower end of the elastic pressure plate 62 abuts against the bottom of the accommodating area, and the radial outer side of the elastic pressure plate 62 abuts against the radial inner sides of the sealing ring 1 52 and the sealing ring 2 55 .

[0109] In the above technical solution, the two elastic pressure plates are both U-shaped structures, and the two elastic pressure plates are respectively adapted to the two side walls of the protrusion in a width direction without interfering with each other;

[0110] In the above technical solution, the elastic pressure plate and the elastic clamping ring are integrally connected and fixed;

[0111] By adopting the above technical solution, the setting of the elastic pressure plate can assist in tightening the two sealing rings and the joints of the two sealing rings to further improve the sealing effect. The elastic pressure plate is connected and fixed to the elastic clamping ring through the bending portion, which is easy to disassemble and assemble.

[0112] Example 8:

[0113] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0114] Furthermore, it also includes:

[0115] A gas storage tank (10) is detachably fixedly mounted on the upper end of the body;

[0116] A pressure gauge (11) is threadedly connected to the upper end of the gas storage tank (10) and is located directly below the observation window (2);

[0117] The air outlet end of the gas storage tank (10) is threaded with a pressure reducer (12), and the air outlet end of the pressure reducer (12) is sleeved with a breathing bag (13).

[0118] By adopting the above technical solution, the pressure gauge can be directly opposite the observation window, so that the operator can understand the current pressure status of the system at a glance, identify potential safety issues in advance, and take corresponding measures.

[0119] Example 9:

[0120] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0121] Furthermore, the pressure reducer 12 includes:

[0122] The pressure reducer housing is threadedly connected to the gas outlet end of the gas storage tank 10;

[0123] The air outlet 14 is provided at the end of the pressure reducer housing away from the gas storage tank 10;

[0124] The air supply hole 15 is provided inside the pressure reducer housing and is connected to the air outlet end of the air storage tank 10;

[0125] The adjusting ring 16 is sleeved on the outer side of the pressure reducer housing and can rotate relative to the pressure reducer housing to adjust the opening and closing of the air outlet 14.

[0126] By adopting the above technical solution, the high-pressure gas in the gas tank can be controlled and outputted through the setting of the pressure reducer to ensure safety;

[0127] The air outlet opening and closing can be controlled by rotating the adjustment ring to adjust the air supply volume. Compared with the traditional knob-type adjustment, it is more convenient and can significantly reduce the operator's labor intensity, especially when frequent opening and closing adjustments are required.

[0128] Example 10:

[0129] This embodiment provides an isolated compressed oxygen self-rescuer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0130] Furthermore, it also includes:

[0131] A radial hole 17 is provided on the radial outer side of the pressure reducer housing and is connected to the air outlet 14;

[0132] The plug 18 is slidably mounted in the radial hole 17, and a passage between the radial hole 17 and the air supply hole 15 is provided below the plug 18;

[0133] The spring 19 is sleeved on the radial outer side of the plug 18, with one end of the spring 19 abutting against the plug 18 and the other end abutting against the bottom of the radial hole 17. The plug 18 is at least partially extended out of the upper opening of the radial hole 17 through the spring 19;

[0134] Among them, a receiving groove 20 that cooperates with the plug 18 is provided on the radial inner side of the adjustment ring 16, and an inclined guide surface for squeezing the plug 18 is provided on one side of the receiving groove 20. When the adjustment ring 16 rotates, the plug 18 can move back and forth along its axial direction to block or open the channel.

[0135] By adopting the above technical solution, in the initial state, the plug is squeezed into the radial hole by the adjusting ring to block the channel. When the air outlet needs to be exhausted, the adjusting ring is rotated to move the second accommodating groove above the radial hole. The plug is not blocked by the adjusting ring and is pushed up by the spring to enter the second accommodating groove. At this time, the channel is opened, and the gas enters the radial hole through the channel and is then discharged through the air outlet. When the air outlet needs to be closed, the adjusting ring is rotated to reset, and the inclined guide surface of the second accommodating groove on the adjusting ring squeezes the plug, pressing the plug into the radial hole to block the channel. The operation is simple and convenient.

[0136] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An isolated compressed oxygen self-rescuer, comprising a body and an upper cover (1) detachably mounted on the body, characterized in that: The upper cover (1) comprises: An observation window (2) is located on one side of the upper end of the upper cover (1), and comprises a tempered glass and a first edging and a second edging respectively covering the upper and lower edges of the tempered glass; A receiving groove (3) is provided on one side of the upper end of the upper cover (1); A transparent cover plate (4) is clamped in the first receiving groove (3), and the transparent cover plate (4) and the bottom of the first receiving groove (3) are spaced apart to form a label receiving area; The first edge package and the second edge package are injection-molded into a whole with the tempered glass.

2. The isolated compressed oxygen self-rescuer according to claim 1, characterized in that: The first receiving groove (3) comprises a rectangular portion and arcuate portions (31) located on both sides of the rectangular portion. A snap-fitting hole (32) is provided at the bottom of the arcuate portion (31) and matches the transparent cover plate (4).

3. The isolated compressed oxygen self-rescuer according to claim 2, characterized in that: A limiting groove (33) is provided on one side of the bottom of the rectangular portion adjacent to the arc-shaped portion (31); The transparent cover plate (4) includes a plate body and also includes limiting blocks (34) connected to both sides of the lower end of the plate body and used for inserting into the limiting grooves (33).

4. The isolated compressed oxygen self-rescuer according to claim 3, characterized in that: The board also includes: There are two elastic clamping parts, which are respectively located on both sides of the lower end of the plate body and are connected to the clamping holes (32) in a one-to-one correspondence.

5. The isolated compressed oxygen self-rescuer according to claim 4, characterized in that: Each elastic clamping portion includes: Two connecting columns (42) are connected to the lower end of the plate body and are semi-cylindrical in shape; A snap-fit ​​barb connected to the lower ends of the two connecting columns (42); A spacing is provided between the two connecting columns (42).

6. The isolated compressed oxygen self-rescuer according to claim 1, characterized in that: The upper edge of the main body is provided with a mounting surface 1, and the lower edge of the upper cover (1) is provided with a mounting surface 2 that matches the mounting surface 1. The mounting surface 2 includes: A raised portion (5) is fixedly connected to the middle portion of the lower end of the second mounting surface in a circumferential direction; A stepped groove (51) is provided on the lower edge of the radial inner side of the raised portion (5), and a sealing ring (52) is bonded in the stepped groove (51); Mounting surface 1 includes: Step groove three (53) for insertion and matching of protrusion one (5); Step groove four (54), which is sequentially provided with step groove three (53) and step groove four (54) arranged along the circumference of the mounting surface from the outer edge of the mounting surface one to the inner edge thereof, and a sealing ring two (55) is adhered to the inner wall of the step groove four; Among them, when the protrusion part 1 (5) is inserted into the stepped groove 3 (53), the bottom of the protrusion part 1 (5) abuts against the bottom of the stepped groove 3 (53), the radial outer side of the protrusion part 1 (5) abuts against the groove wall of the stepped groove 3 (53), and the lower end of the sealing ring 1 (52) abuts against the upper end of the sealing ring 2 (55).

7. The isolated compressed oxygen self-rescuer according to claim 6, characterized in that: Also includes: An elastic snap ring (61), an annular groove (6) is provided on the inner edge of the lower end of the upper cover (1), and an elastic snap ring (61) is clamped in the annular groove (6); Two elastic pressure plates (62) are provided. The two elastic pressure plates (62) are relatively arranged on both sides of the inner side of the protrusion (5). The lower ends of the elastic pressure plates (62) extend out of the protrusion (5). The upper ends of the elastic pressure plates (62) are provided with a bending portion connected and fixed to the elastic clamp (61); The second protrusion (63) is fixedly connected to the bottom of the fourth step groove (54) in the circumferential direction, and a receiving area for the lower end of the elastic pressure plate (62) to be inserted is formed between the second protrusion (63) and the second sealing ring (55); The radial inner side of the elastic pressure plate (62) and the radial outer side of the second protrusion (63) are respectively provided with a first inclined surface and a second inclined surface that cooperate with each other; When the protrusion 1 (5) abuts against the bottom of the stepped groove 3 (53), the lower end of the elastic pressure plate (62) abuts against the bottom of the accommodating area, and the radial outer side of the elastic pressure plate (62) abuts against the radial inner sides of the sealing ring 1 (52) and the sealing ring 2 (55).

8. The isolated compressed oxygen self-rescuer according to claim 1, characterized in that: Also includes: A gas storage tank (10) is detachably fixedly mounted on the upper end of the body; A pressure gauge (11) is threadedly connected to the upper end of the gas storage tank (10) and is located directly below the observation window (2); The air outlet end of the gas storage tank (10) is threaded with a pressure reducer (12), and the air outlet end of the pressure reducer (12) is sleeved with a breathing bag (13).

9. The isolated compressed oxygen self-rescuer according to claim 1, characterized in that: The pressure reducer (12) comprises: The pressure reducer housing is threadedly connected to the gas outlet end of the gas storage tank (10); An air outlet (14) is provided at an end of the pressure reducer housing facing away from the gas storage tank (10); An air supply hole (15) is provided inside the pressure reducer housing and is in communication with the air outlet end of the air storage tank (10); The adjusting ring (16) is sleeved on the outer side of the pressure reducer housing and can be rotated relative to the pressure reducer housing to adjust the opening and closing of the air outlet (14).

10. The isolated compressed oxygen self-rescuer according to claim 1, characterized in that: Also includes: A radial hole (17) is provided on the radial outer side of the pressure reducer housing and is in communication with the air outlet hole (14); A plug (18) is slidably mounted in the radial hole (17), and a passage between the radial hole (17) and the air supply hole (15) is provided below the plug (18); A spring (19) is sleeved on the radial outer side of the plug (18), one end of the spring (19) abuts against the plug (18), and the other end abuts against the bottom of the radial hole (17), and the plug (18) at least partially extends out of the upper opening of the radial hole (17) through the spring (19); A second receiving groove (20) is provided on the radial inner side of the adjusting ring (16) to match the plug (18), and an inclined guide surface for squeezing the plug (18) is provided on one side of the receiving groove (20). When the adjusting ring (16) rotates, the plug (18) can move back and forth along its axial direction to block or open the channel.

Images