Electronic intelligent positive pressure type air respirator

Abstract

The utility model relates to the field of air respirators, and particularly discloses an electronic intelligent positive pressure type air respirator which comprises a back frame, an air tank, a breathing mask, a power module, a central control device and a sound-light alarm device, the air tank is mounted on the back frame, the breathing mask is connected with the air tank through an air pipe, and the power module, the central control device and the sound-light alarm device are arranged on the back frame. The sound-light alarm device is electrically connected with the central control device, the central control device is used for controlling the sound-light alarm device to start, and the power supply module is used for supplying power to the central control device and the sound-light alarm device. The air respirator has the effect of solving the problems that an air respirator is single in function, and the function requirement for finding trapped firefighters or rescue personnel in time is difficult to meet.

Description

Technical Field

[0001] The present application relates to the field of air respirators, and in particular to an electronic intelligent positive pressure air respirator. Background Art

[0002] Positive pressure air respirator is a self-contained open air respirator, which is widely used in fire fighting, chemical industry, shipbuilding, petroleum, smelting, warehouse, laboratory, mining and other departments. It enables firefighters or emergency rescue personnel to safely and effectively carry out fire fighting, emergency rescue and rescue work in various environments such as thick smoke, poisonous gas, steam or lack of oxygen.

[0003] An air respirator is proposed in the related technology, including a backpack, a gas tank and a breathing mask. The backpack is provided with shoulder straps, the gas tank is fixedly installed on the backpack, and the breathing mask is connected to the gas tank through an air pipe. When in use, firefighters or emergency rescue personnel carry the backpack with the gas tank on their bodies through the shoulder straps, and then put on the breathing mask.

[0004] With regard to the above-mentioned related technologies, the on-site environment in which firefighters or emergency rescue personnel use air respirators is usually relatively harsh. Once the firefighters or emergency rescue personnel themselves are trapped in danger, it is particularly important to find the trapped firefighters or emergency rescue personnel in time. The air respirators in the related technologies only have the function of providing fresh air, and the function is single, so it is difficult to meet the functional requirement of finding the trapped firefighters or emergency rescue personnel in time. Utility Model Content

[0005] In order to improve the problem that the air respirator has a single function and is difficult to meet the functional requirements of finding trapped firefighters or emergency rescue personnel in a timely manner, the present application provides an electronic intelligent positive pressure air respirator.

[0006] The electronic intelligent positive pressure air respirator provided in this application adopts the following technical solution:

[0007] An electronic intelligent positive pressure air respirator comprises a back frame, a gas tank and a breathing mask, wherein the gas tank is mounted on the back frame, and the breathing mask is connected to the gas tank via a trachea. The apparatus also comprises a power module, a central control device and an audible and visual alarm device arranged on the back frame, wherein the audible and visual alarm device is electrically connected to the central control device, the central control device is used to control the activation of the audible and visual alarm device, and the power module is used to supply power to the central control device and the audible and visual alarm device.

[0008] By adopting the above technical solution, when firefighters or emergency rescue personnel themselves are trapped in danger, the central control device controls the sound and light alarm device to send out an alarm sound and flashing lights, thereby facilitating timely finding the trapped firefighters or emergency rescue personnel; the setting of the power module enables the central control device and the sound and light alarm device to work independently, and there will be no interference between the central control device and the sound and light alarm device and the use of gas cylinders and breathing masks, thereby further improving the stability of the operation of the sound and light alarm device and thus improving safety.

[0009] Optionally, the back frame includes a back panel frame and a shoulder strap frame, the shoulder strap frame is slidably connected to the top of the back panel frame along the length direction of the back panel frame, a first shoulder strap is connected to each side of the shoulder strap frame, and a second shoulder strap is connected to each side of the bottom of the back panel frame, the first shoulder strap and the second shoulder strap on the same side are connected by a buckle, and the shoulder strap frame is provided with a locking device for locking the position of the shoulder strap frame.

[0010] By adopting the above technical solution, the first shoulder strap and the second shoulder strap are arranged to ensure that the back frame can be stably and securely worn on the wearer's back. The shoulder strap frame and the locking device are arranged so that the overall length of the back frame can be appropriately adjusted to adapt to the different height requirements of the wearer, and the back frame has strong adaptability and practicality.

[0011] Optionally, the locking device includes a sliding pin, which is movably inserted into the side wall of the shoulder strap frame. A socket is provided on the back panel frame corresponding to the sliding pin. A plurality of sockets are arranged at intervals along the length direction of the back panel frame. The sliding pin can pass through the shoulder strap frame and be inserted into the socket. An adjustment component is provided on the shoulder strap frame for adjusting the sliding pin to escape from the socket.

[0012] By adopting the above technical solution, the setting of the sliding pin makes it possible to lock the shoulder strap frame by only applying force to the sliding pin so that the sliding pin is inserted into the socket. When the sliding pin is inserted into the socket, it is also inserted into the locking shoulder, and the sliding pin restricts the sliding of the shoulder strap frame, thereby locking the shoulder strap frame and the back plate frame. The structure is simple and easy to use. When unlocking the shoulder strap frame and the back plate frame, it is only necessary to remove the sliding pin from the socket by adjusting the assembly.

[0013] Optionally, the adjustment assembly includes a first adjustment lock and a second adjustment lock, the second adjustment lock is slidably connected to the shoulder strap frame along the length direction of the back plate frame, a protrusion is provided on the outer side of the second adjustment lock, and the distance between the end of the protrusion away from the second adjustment lock and the outer side wall of the second adjustment lock gradually decreases from the direction in which the shoulder strap frame is close to the back plate frame to the direction in which it slides away from the back plate frame; a sliding groove is provided on the side wall of the shoulder strap frame, the first adjustment lock is slidably clamped in the sliding groove, the sliding pin is fixed on the first adjustment lock, and the inner side of the first adjustment lock is provided with a locking groove that matches the protrusion.

[0014] By adopting the above technical solution, the second adjustment lock buckle is pulled upward, driving the protrusion on the outside of the second adjustment lock buckle to press against the engagement groove on the inside of the first adjustment lock buckle, so that the first adjustment lock buckle drives the sliding pin thereon to disengage from the socket, thereby unlocking the shoulder strap frame and the back panel frame. The structure is relatively simple and easy to use.

[0015] Optionally, an elastic member is provided in the sliding groove, a protective cover is provided at the notch of the sliding groove, one end of the elastic member abuts against the protective cover, and the other end of the elastic member abuts against the sliding pin, and the elastic member causes the sliding pin on the first adjustment lock buckle to tend to be inserted into the socket.

[0016] By adopting the above technical solution, when the second adjustment lock buckle is no longer pulled, the sliding pin on the first adjustment lock buckle is inserted into the insertion hole under the elastic force of the elastic member, thereby locking the shoulder strap frame and the back plate frame; the structure is simple, and the adjustment method is simple and fast; and when the first adjustment lock buckle slides toward the insertion hole as the elastic member does, the second adjustment lock buckle is reset by the pressure of the protrusion through the engaging groove, which facilitates the next sliding adjustment of the second adjustment lock buckle and is easy to use.

[0017] Optionally, scale lines are provided on the shoulder strap frame.

[0018] By adopting the above technical solution and setting the scale lines, the operator can quickly and accurately adjust the position of the shoulder strap frame, which is easy to use.

[0019] Optionally, a cushioning pad is provided on the outer side of the shoulder strap frame.

[0020] By adopting the above technical solution and providing the buffer cushion, the collision damage between the gas tank and the back plate frame is reduced when the gas tank is installed and fixed on the back plate frame, thereby improving the safety and stability of the gas tank during installation.

[0021] Optionally, the back frame is made of flame-retardant material.

[0022] By adopting the above technical solution, the back frame made of flame-retardant material can prevent firefighters from catching fire due to high temperature environment when performing firefighting operations, thereby improving the safety and reliability of the back frame when in use.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The matching setting of the power module, the central control device and the sound and light alarm device enables firefighters or rescue personnel to control the sound and light alarm device to sound an alarm and flash lights through the central control device when they are trapped in danger, so as to find the trapped firefighters or rescue personnel in time; the power module independently supplies power to the central control device and the sound and light alarm device, which will not interfere with the normal use of the air respirator, and has high safety;

[0025] 2. The coordinated arrangement of the shoulder strap frame and the locking device makes the overall length of the back frame adjustable, which is convenient for adapting to the height requirements of different wearers and improving applicability;

[0026] 3. The first adjustment lock buckle and the second adjustment lock buckle are arranged so that sliding the second adjustment lock buckle upwards can drive the protrusion to press the first adjustment lock buckle away from the socket, and drive the sliding pin to disengage from the socket, thereby realizing the unlocking of the shoulder strap frame and the back plate frame. The structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of the overall structure of the outer side portion of the back frame in an embodiment of the present application;

[0029] Figure 2 is a schematic diagram of the overall structure of the inner side of the back frame in the embodiment of the present application,

[0030] Figure 3 It is a schematic diagram of the exploded structure of the backboard frame and shoulder strap frame;

[0031] Figure 4 It is a schematic diagram of the longitudinal cross-sectional structure of the backboard frame and the shoulder strap frame.

[0032] Reference numerals: 1, back frame; 11, backboard frame; 111, mounting groove; 112, backboard waist belt; 113, second shoulder strap; 114, jack; 115, fixed waist belt; 116, fixed belt; 117, cushioning pad; 12, shoulder strap frame; 121, first shoulder strap; 1211, cushioning lining; 122, buckle; 123, sliding pin hole; 124, placement groove; 125, sliding groove; 126, scale line; 2, gas tank; 3, breathing mask; 32, intercom ; 4. Power module; 41. Charging base; 42. Power indicator light button; 43. Power indicator light; 44. Backup battery; 5. Central control device; 6. Sound and light alarm device; 61. Loudspeaker; 62. Flashing light; 7. Locking device; 71. Sliding pin; 72. First adjustment lock; 721. Engaging groove; 722. Reset spring; 73. Second adjustment lock; 731. Bump; 732. Pull block; 733. Anti-slip block; 74. Elastic member; 75. Protective cover. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The embodiment of the present application discloses an electronic intelligent positive pressure air respirator. The embodiment of the present application takes the state of the air respirator being normally worn on the back of the wearer as an example for explanation, the side close to the back of the wearer is the inner side, and the side away from the back of the wearer is the outer side. Figure 1 and Figure 2 The electronic intelligent positive pressure air respirator comprises a back frame 1, a gas tank 2, a breathing mask 3, a power module 4, a central control device 5 and an audible and visual alarm device 6. The back frame 1 is made of flame-retardant material. The back frame 1 comprises a back plate frame 11 and a shoulder strap frame 12. The back plate frame 11 is arranged vertically. A mounting groove 111 is vertically opened at the top of the back plate frame 11. The bottom of the shoulder strap frame 12 is vertically movably inserted into the mounting groove 111. The two sides of the top of the shoulder strap frame 12 are fixedly connected with a first shoulder strap 121, a buckle 122 is installed at one end of the first shoulder strap 121 away from the shoulder strap frame 12, and the buckle 122 adopts a Japanese buckle made of stainless steel. A backboard waist belt 112 is fixedly connected to the bottom of the backboard frame 11 in a transverse direction, and a second shoulder strap 113 is fixedly connected to both sides of the backboard waist belt 112. The first shoulder strap 121 is connected to the second shoulder strap 113 through the buckle 122 after turning over the shoulders of the wearer from the back; a locking device 7 for locking the position of the shoulder strap frame 12 is provided on the shoulder strap frame 12. Through the coordinated arrangement of the shoulder strap frame 12 and the locking device 7, the overall length of the back frame 1 can be effectively adjusted according to the different heights of the wearer, so that it is more comfortable to wear.

[0035] Reference Figure 3 The locking device 7 includes a sliding pin 71. A through sliding pin hole 123 is provided on the outer side wall of the shoulder strap frame 12. The sliding pin 71 is movably inserted into the sliding pin hole 123. A plurality of sliding pin holes 123 are evenly spaced in the horizontal direction. Each sliding pin hole 123 is inserted with a sliding pin 71. A plug hole 114 is provided on the back plate frame 11 corresponding to each sliding pin 71. The plug holes 114 are evenly spaced in multiple rows along the height direction. The shoulder strap frame 12 can be locked with the back plate frame 11 by pressing the sliding pin 71 through the sliding pin hole 123 and then inserting it into the corresponding plug hole 114. By inserting the sliding pin 71 into different rows of plug holes 114, the length of the shoulder strap frame 12 out of the mounting groove 111 can be adjusted, thereby adjusting the overall length of the back frame 1 to adapt to wearers of different heights and improve the wearing comfort and stability. In addition, in order to facilitate the sliding pin 71 to be disengaged from the insertion hole 114 , an adjustment component for adjusting the sliding pin 71 to be inserted into or disengaged from the insertion hole 114 is provided on the shoulder strap frame 12 .

[0036] The adjustment assembly includes a first adjustment lock buckle 72, a second adjustment lock buckle 73 and an elastic member 74. A placement slot 124 is provided on the outer wall of the shoulder strap frame 12. A sliding pin hole 123 is provided in the placement slot 124. The second adjustment lock buckle 73 is slidably connected to the placement slot 124 along the height direction. An inclined protrusion 731 is provided on the outer wall of the second adjustment lock buckle 73. The height of the protrusion 731, that is, the distance from the end of the protrusion 731 away from the outer wall of the second adjustment lock buckle 73 to the outer wall of the second adjustment lock buckle 73, gradually decreases from low to high. A sliding slot 125 is provided on the bottom wall of the placement slot 124. The first adjustment lock buckle 72 is slidably locked in the sliding slot 125 along a direction perpendicular to the plane where the backboard frame 11 is located; refer to Figure 4 The inner side wall of the first adjustment lock buckle 72 is provided with a snap-fitting groove 721 matched with the protrusion 731, the protrusion 731 is adapted to snap-fit ​​into the snap-fitting groove 721, and the sliding pin 71 is passed through and fixedly connected to the first adjustment lock buckle 72. The elastic member 74 is a compression spring, and the slot cover of the placement slot 124 is provided with a protective cover 75, and the compression spring is fixedly connected to the inner side wall of the protective cover 75. When the protective cover 75 is covered on the placement slot 124, the end of the compression spring away from the protective cover 75 presses against the sliding pin 71 of the first adjustment lock buckle 72, and the compression spring makes the sliding pin 71 tend to be inserted into the insertion hole 114.

[0037] Reference Figure 3-4 When installing the adjustment component, first slide the second adjustment lock buckle 73 onto the bottom wall of the placement groove 124, and then put the first adjustment lock buckle 72 with the sliding pin 71 installed and fixed into the sliding groove 125, so that the locking groove 721 on the inner side of the first adjustment lock buckle 72 is adapted to engage with the protrusion 731 on the outer side of the second adjustment lock buckle 73, and then cover the protective cover 75 on the notch of the placement groove 124. When the protective cover 75 is covered, the elastic member 74 presses against the sliding pin 71, and the elastic force of the elastic member 74 drives the sliding pin 71 on the first adjustment lock buckle 72 to pass through the sliding pin hole 123 and insert into the insertion hole 114 on the back plate frame 11, thereby locking the shoulder strap frame 12 and the back plate frame 11. When the locking clasp 75 is in the state of being moved away from the locking clasp 71 and the locking clasp 73 is in the state of being moved, the locking clasp 75 can be locked to the locking clasp 71 by pressing the second locking clasp 73 and the locking clasp 72 together.

[0038] In addition, in order to facilitate the downward movement and reset of the second adjustment lock buckle 73, a reset spring 722 is fixedly connected to the outer side of the first adjustment lock buckle 72, one end of the reset spring 722 is fixedly connected to the outer side wall of the first adjustment lock buckle 72, and the other end of the reset spring 722 abuts against the top wall of the placement groove 124. Sliding the second adjustment lock buckle 73 upward will compress the reset spring 722 to store elastic potential energy. When the second adjustment lock buckle 73 is no longer applied, the reset spring 722 releases the elastic potential energy, and the second adjustment lock buckle 73 moves downward and resets under the elastic force of the reset spring 722.

[0039] Further, see Figure 3 In order to accurately and quickly adjust the length of the shoulder strap frame 12 out of the installation slot 111, a scale line 126 is provided on the shoulder strap frame 12. The scale of the scale line 126 corresponds to the number of multiple rows of jacks 114 provided on the back plate frame 11 along the length direction of the back plate frame 11. In addition, in order to facilitate pulling the second adjustment lock buckle 73, a pull block 732 is integrally formed on the top of the second adjustment lock buckle 73, and the pull block 732 passes through the inner side wall of the shoulder strap frame 12. In order to prevent the second adjustment lock buckle 73 from falling out, an anti-falling block 733 is provided on the outer side wall of the second adjustment lock buckle 73, and a gap is left between the anti-falling block 733 and the top wall of the placement slot 124 for the second adjustment lock buckle 73 to slide.

[0040] Reference Figure 1 In order to improve the comfort of the wearer, a cushioning lining 1211 is provided on the first shoulder strap 121. When in use, the first shoulder strap 121 presses the cushioning lining 1211 against the wearer's shoulder, and the cushioning lining 1211 buffers and disperses the pressure of the first shoulder strap 121 on the wearer's shoulder, thereby reducing the pressure on the wearer's shoulder and improving comfort. In order to further enhance the wearing stability of the backboard frame 11, the left and right sides of the backboard waist belt 112 are fixedly connected with fixed waist belts 115, and the two fixed waist belts 115 are connected and fixed after being wrapped around the wearer's waist.

[0041] The gas tank 2 is fixedly installed in an inverted state on the outside of the back plate frame 11, and the breathing mask 3 is connected to the gas tank 2 through the trachea. In order to strengthen the fixation of the gas tank 2 and the back plate frame 11, fixing belts 116 are fixedly connected on both sides of the back plate frame 11, and the two fixing belts 116 are connected by Velcro to fix the gas tank 2 on the back plate frame 11. And a buffer cushion 117 is provided on the outside of the back plate frame 11. The buffer cushion 117 is made of rubber products. The gas tank 2 is pressed against the buffer cushion 117, which reduces the collision damage between the gas tank 2 and the back plate frame 11 and improves safety.

[0042] The sound and light alarm device 6 is fixedly connected to both sides of the backboard frame 11. The sound and light alarm device 6 includes a loudspeaker 61 and a flashing light 62. The loudspeaker 61 can effectively emit an alarm sound; the flashing light 62 can effectively emit a flashing light, thereby alerting other nearby rescue personnel and facilitating timely finding of trapped firefighters or rescue personnel. Figure 2 The central control device 5 is fixedly installed in the middle of the inner side of the backboard frame 11. The central control device 5 includes a pressure sensing unit, an audio processing unit and an integrated processor for receiving and processing the electrical signals of the above-mentioned units, which are not shown in the figure. The integrated processor is connected to the sound and light alarm device 6 by telecommunication. The pressure sensing unit is used to monitor the pressure value in the gas tank 2. When the pressure value in the gas tank 2 is abnormal, the pressure sensing unit transmits the electrical signal to the integrated processor, and the integrated processor controls the sound and light alarm device 6 to emit an alarm sound and flashing lights. An intercom 32 is integrated in the breathing mask 3. The intercom 32 is electrically connected to the audio processing unit. The audio processing unit converts the sound signal received by the intercom 32 into an electrical signal and sends it to the integrated processor. The integrated processor controls the loudspeaker 61 to play the sound emitted by the firefighter or rescue personnel through the breathing mask 3, thereby realizing external long-distance dialogue, and can call for help loudly, thereby increasing the probability of finding the trapped firefighter or rescue personnel.

[0043] The power module 4 is detachably fixedly connected to the upper part of the inner side of the back plate frame 11. The power module 4 is electrically connected to the sound and light alarm device 6 and the central control device 5, and is used to supply power to the sound and light alarm device 6 and the central control device 5. In order to ensure the normal use of the air respirator, a charging base 41 is provided on the top of the power module 4, and a power display light button 42 and a power display light 43 are provided in the middle of the power module 4. Clicking the power display light button 42 can display the current power of the power module 4 through the power display light 43, so as to flexibly charge the power module 4. In addition, a backup battery 44 is fixedly installed on one side of the central control device 5 on the inner side of the back plate frame 11, which is used to ensure that the central control device 5 can be used normally in an emergency.

[0044] The implementation principle of the electronic intelligent positive pressure air respirator of the embodiment of the present application is as follows: when in use, the second adjustment lock buckle 73 is pulled upward so that the protrusion 731 on the outer side of the second adjustment lock buckle 73 presses the engaging groove 721 on the inner side of the first adjustment lock buckle 72, so that the first adjustment lock buckle 72 drives the sliding pin 71 thereon to disengage from the insertion hole 114, thereby releasing the lock between the shoulder strap frame 12 and the back plate frame 11; then, according to the height of the wearer, the distance that the shoulder strap frame 12 disengages from the mounting groove 111 is appropriately adjusted, and the second adjustment lock buckle 73 is no longer pulled, and the first adjustment lock buckle 72 can be adjusted in the elastic Under the action of the elastic force of the component 74, it slides toward the direction close to the socket 114, thereby driving the sliding pin 71 to be inserted into the socket 114 again, locking the shoulder strap frame 12 and the back plate frame 11; thereby adjusting the overall length of the back frame 1 to facilitate adaptation to the height requirements of different wearers, and having strong adaptability; when the firefighters or emergency rescue personnel themselves are trapped in danger, the power module 4, the central control device 5 and the sound and light alarm device 6 are set, so that the air respirator can control the sound and light alarm device 6 to give an alarm in time through the central control device 5, so as to facilitate timely finding the trapped firefighters or emergency rescue personnel.

[0045] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electronic intelligent positive pressure air respirator, comprising a back frame (1), a gas tank (2) and a breathing mask (3), wherein the gas tank (2) is mounted on the back frame (1), and the breathing mask (3) is connected to the gas tank (2) via a trachea, characterized in that: The device also comprises a power module (4), a central control device (5) and an audible and visual alarm device (6) arranged on the back frame (1); the audible and visual alarm device (6) is electrically connected to the central control device (5); the central control device (5) is used to control the activation of the audible and visual alarm device (6); and the power module (4) is used to supply power to the central control device (5) and the audible and visual alarm device (6).

2. An electronic intelligent positive pressure air respirator according to claim 1, characterized in that: The back frame (1) comprises a back plate frame (11) and a shoulder strap frame (12); the shoulder strap frame (12) is slidably connected to the top of the back plate frame (11) along the length direction of the back plate frame (11); first shoulder straps (121) are connected to both sides of the shoulder strap frame (12); second shoulder straps (113) are connected to both sides of the bottom of the back plate frame (11); the first shoulder strap (121) and the second shoulder strap (113) on the same side are connected by a buckle (122); and a locking device (7) for locking the position of the shoulder strap frame (12) is provided on the shoulder strap frame (12).

3. An electronic intelligent positive pressure air respirator according to claim 2, characterized in that: The locking device (7) comprises a sliding pin (71), wherein the sliding pin (71) is movably arranged on the side wall of the shoulder strap frame (12); a socket (114) is provided on the back plate frame (11) corresponding to the sliding pin (71); a plurality of sockets (114) are arranged at intervals along the length direction of the back plate frame (11); and the sliding pin (71) can pass through the shoulder strap frame (12) and be inserted into the socket (114); and an adjustment component for adjusting the sliding pin (71) to escape from the socket (114) is provided on the shoulder strap frame (12).

4. The electronic intelligent positive pressure air respirator according to claim 3, characterized in that: The adjustment component comprises a first adjustment lock buckle (72) and a second adjustment lock buckle (73), wherein the second adjustment lock buckle (73) is slidably connected to the shoulder strap frame (12) along the length direction of the back plate frame (11), and a protrusion (731) is provided on the outer side of the second adjustment lock buckle (73). From the direction where the shoulder strap frame (12) is close to the back plate frame (11) to the direction where it slides away from the back plate frame (11), the distance between the end of the protrusion (731) away from the second adjustment lock buckle (73) and the outer side wall of the second adjustment lock buckle (73) gradually decreases; a sliding groove (125) is provided on the side wall of the shoulder strap frame (12), and the first adjustment lock buckle (72) is slidably clamped in the sliding groove (125), and the sliding pin (71) is fixed on the first adjustment lock buckle (72), and the inner side of the first adjustment lock buckle (72) is provided with a clamping groove (721) adapted to the protrusion (731).

5. The electronic intelligent positive pressure air respirator according to claim 4, characterized in that: An elastic member (74) is provided in the sliding groove (125), a protective cover (75) is provided at the notch of the sliding groove (125), one end of the elastic member (74) abuts against the protective cover (75), and the other end of the elastic member (74) abuts against the sliding pin (71), and the elastic member (74) causes the sliding pin (71) on the first adjustment lock buckle (72) to tend to be inserted into the insertion hole (114).

6. The electronic intelligent positive pressure air respirator according to claim 2, characterized in that: The shoulder strap frame (12) is provided with scale marks (126).

7. The electronic intelligent positive pressure air respirator according to claim 2, characterized in that: A soft cushion (117) is provided on the outer side of the shoulder strap frame (12).

8. The electronic intelligent positive pressure air respirator according to claim 1, characterized in that: The back frame (1) is made of flame-retardant material.

Images