Assembly for backpack diving equipment and backpack diving equipment

Abstract

The present application discloses an assembly for a backpack diving device. The backpack diving device using the assembly has a compact breathing circulation gas path structure, is easy to operate, and has little potential safety hazard. In the assembly, a belly belt, a left shoulder strap, and a right shoulder strap are provided on the back plate, and the back plate and the load plate are symmetrically overlapped and fixedly assembled, but a reserved space is provided between the opposite sides. The strip filter can be parallel to the longitudinal axis of the load plate and can be detachably assembled in the middle of the outer side of the load plate. The inhalation buffer bag and the exhalation buffer bag of the assembly are both strip-shaped, each with one end located in the above-mentioned reserved space and used to directly connect to the two interfaces on both sides of the top of the filter, and the other end is respectively attached to the upper surface of the two shoulder straps.

Description

Technical Field

[0001] The present application belongs to the field of breathing equipment for single-person diving, and specifically relates to backpack-type breathing equipment for single-person diving. Background Art

[0002] In closed or semi-closed single-person diving equipment, the buoyancy adjustment system includes disposable counterweights and buoyancy adjustment air bags; the air supply circuit includes high-pressure gas cylinders, which replenish oxygen and nitrogen to the breathing circulation air circuit and also inflate the buoyancy adjustment air bag; the gas in the breathing circulation air circuit is purified by the filter and inhaled by the diver through the inhalation buffer bag and the breathing mouth valve, and the diver's exhalation returns to the filter in whole or in part through the breathing mouth valve and the exhalation buffer bag.

[0003] There are three ways to wear the above diving equipment: 1) Most of them are located on the chest, with concentrated pipelines and easy operation, but hindering operations; 2) The buoyancy adjustment air bag is set on a vest or waistcoat, the breathing circulation air circuit is placed in the front, and the high-pressure gas cylinder is placed in the back, and its pipelines are complicated; 3) Most of them are carried on the back for underwater operations, because the breathing mouth valve pipeline has to be wrapped around the back, which poses a safety hazard. Summary of the invention

[0004] The technical problem to be solved by the present application is how to improve the piping structure of backpack diving equipment to improve safety.

[0005] In a first aspect of the present application, an assembly for a backpack diving device is disclosed, hereinafter referred to as the assembly. In a second aspect of the present application, a backpack diving device including the assembly is disclosed.

[0006] The assembly of the first aspect comprises:

[0007] A backboard, the shape of which is adapted to the shoulders and back of the human body;

[0008] The belly band is used to connect between the two sides of the bottom end of the backboard;

[0009] A left shoulder strap and a right shoulder strap, each having one end mounted on the top of the backboard, and the other end of each strap being used to connect with the abdominal belt to restrain the backboard on the back of the human body;

[0010] A load plate is symmetrically overlapped and fixedly assembled with the backing plate, and a reserved space is provided between the opposite sides of the backing plate;

[0011] A strip-shaped air-inhalation cushion bag, the air inlet end of which is located in the reserved space and is provided with a second air inlet interface, the air outlet end of which is attached and fixed to the upper surface of one of the left shoulder strap and the right shoulder strap and is provided with a second air outlet interface, and the second air inlet interface is embedded in one side of the top of the load plate; and

[0012] A strip-shaped exhalation buffer bag, the air outlet end of which is located in the reserved space and is provided with a third air outlet interface, the air inlet end is attached and fixed to the other upper surface of the left shoulder strap and the right shoulder strap and is provided with a third air inlet interface, and the third air outlet interface is embedded in the other side of the top of the load plate;

[0013] The inhalation buffer bag and the exhalation buffer bag are used to form a breathing circulation air circuit with a filter and a breathing mouth valve;

[0014] The filter comprises a strip-shaped rigid shell, with a first air outlet interface and a first air inlet interface respectively provided on both sides of the top, parallel to the longitudinal axis of the load plate, and detachably mounted on the middle of the outer side of the load plate;

[0015] The second air inlet interface is used to directly connect to the first air outlet interface;

[0016] The third air outlet interface is used to directly connect to the first air inlet interface.

[0017] In some embodiments of the present application, it can be selected that the second air outlet interface and the third air inlet interface are respectively located below the clavicle on the human chest after the belt is worn, or are respectively located above the human shoulder after wearing.

[0018] The backpack diving equipment of the second aspect, wherein the breathing circulation gas circuit comprises a filter, an inhalation buffer bag and an exhalation buffer bag, further comprising:

[0019] A backboard, the shape of which is adapted to the shoulders and back of the human body;

[0020] The belly band is used to connect between the two sides of the bottom end of the backboard;

[0021] The left shoulder strap and the right shoulder strap each have one end mounted on the top of the back plate, and the other end of each is used to connect with the abdominal belt to restrain the back plate on the back of the human body; and

[0022] A load plate is symmetrically overlapped and fixedly assembled with the backing plate, and a reserved space is provided between the opposite sides of the backing plate;

[0023] The filter comprises a strip-shaped rigid shell, parallel to the longitudinal axis of the load plate, detachably mounted on the middle of the outer side of the load plate, and having a first air outlet interface and a first air inlet interface respectively disposed on both sides of the top;

[0024] The air inhalation buffer bag is in a strip shape, the air inlet end is located in the reserved space, and is provided with a second air inlet interface, the air outlet end is attached and fixed to the upper surface of one of the left shoulder strap and the right shoulder strap, and is provided with a second air outlet interface, and the second air inlet interface is embedded in one side of the top of the load plate and is directly connected to the first air outlet interface;

[0025] The exhalation buffer bag is in a strip shape, the air outlet end is located in the reserved space, and is provided with a third air outlet interface, the air inlet end is attached and fixed to the other upper surface of the left shoulder strap and the right shoulder strap, and is provided with a third air inlet interface, and the third air outlet interface is embedded in the other side of the top of the load plate and is directly connected to the first air inlet interface;

[0026] The second air outlet interface and the third air inlet interface are respectively located below the clavicle on the chest of the human body after the belt is worn, or are respectively located above the shoulders of the human body after wearing.

[0027] In some embodiments of the present application, it can be selected that the second air outlet interface and the third air inlet interface of the backpack diving equipment are respectively located below the clavicle on the chest of the human body after wearing the belt, or are respectively located above the shoulders of the human body after wearing.

[0028] By implementing the technical solution of this application, the following beneficial effects can be obtained:

[0029] The present application discloses an assembly for backpack diving equipment. In the assembly, a belly belt, a left shoulder strap and a right shoulder strap are provided on the back plate, and the back plate is fixedly assembled with the load plate in an overlapped manner but with a reserved space. The strip filter can be parallel to the longitudinal axis of the load plate and can be detachably assembled in the middle of the outer side surface of the load plate. The inhalation buffer bag and the exhalation buffer bag of the assembly are both strip-shaped, each with one end located in the above-mentioned reserved space and used to directly connect to the two interfaces on both sides of the top of the filter, and the other end is respectively attached to the upper surface of the two shoulder straps. The backpack diving equipment using the assembly has a compact breathing circulation gas circuit structure, is easy to operate, and has little safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following drawings should be used in conjunction with the detailed description.

[0031] The gas pipeline and high-pressure gas cylinder are not shown in the attached figure. The left and right mentioned below are relative to the wearer of the device.

[0032] Figure 1 is a front view schematic diagram of the first embodiment;

[0033] Figure 2 is a schematic left view of the structure of the first embodiment after explosion, wherein the dotted line represents the flexible component;

[0034] Figure 3 is a schematic right side view of the structure of the first embodiment after explosion, wherein the dotted line represents the flexible component;

[0035] Figure 4 is a three-dimensional schematic diagram of the rigid component assembly in Example 1;

[0036] Figure 5 yes Figure 4 The three-dimensional schematic diagram of the assembly shown after the back plate is separated and attached;

[0037] Figure 6 yes Figure 4 Bottom view schematic of the assembly shown.

[0038] Figure 7 It is a front view schematic diagram of the buoyancy regulating airbag in the first embodiment.

[0039] Figure 8a is a schematic left side view of an exploded structure of an assembly of a backing plate 10, a load plate 20 and a flexible component in another embodiment;

[0040] Figure 8b yes Figure 8a Schematic diagram of the exploded right side view of the assembly shown. DETAILED DESCRIPTION

[0041] To facilitate understanding of the present application, embodiments are described below with reference to the accompanying drawings.

[0042] In this specification, unless otherwise specified, "one embodiment", "some embodiments" and "other embodiments" are used to distinguish different embodiments and do not refer to all embodiments; the accompanying drawings are schematic diagrams and are not strictly in line with reality. The dimensional proportions observed in the accompanying drawings do not necessarily belong to the embodiments described below; the directions / positions indicated by top, bottom, center, edge, inside, outside, far, near, length, width, vertical, horizontal, up, and down, etc., based on the observation angle of the accompanying drawings, cannot be understood as the components / devices are located in specific positions and facing specific directions; ordinal words such as first, second, and third have no sequential meaning when used to distinguish components / devices with the same function / name.

[0043] Unless otherwise specified in this manual, front, back, left, and right refer to the person wearing the device.

[0044] Embodiment 1

[0045] Disclosed is a backpack diving device, hereinafter referred to as diving device.

[0046] See also Figures 1 to 7 , the diving equipment includes a backpack 90.

[0047] The diving equipment also includes an air replenishment circuit, a breathing circulation circuit, a disposable counterweight, a buoyancy adjustment air bag 50, a left shoulder strap 11, a right shoulder strap 12, an abdominal belt 13, a bottom strap 14, a back plate 10 and a load plate 20 arranged in or on the backpack 90.

[0048] Please note: the air supply circuit, disposable counterweights, breathing circulation circuit pipelines and breathing mouth valve, as well as the manual filling and deflation pipelines mentioned below are not drawn in the attached drawings.

[0049] The air supply circuit includes one or two high-pressure gas cylinders, which are used to supplement oxygen and nitrogen to the breathing circulation circuit and also to inflate the buoyancy regulating airbag 50. The buoyancy regulating airbag 50 is provided with an airbag valve 51, which is connected to the manual air charging and discharging pipeline. The manual air charging and discharging pipeline, the buoyancy regulating airbag 50 and the disposable counterweight constitute the buoyancy regulating system of the diving equipment.

[0050] The breathing circulation air circuit is closed or semi-closed, and includes a filter 200, an inhalation buffer bag 30, an exhalation buffer bag 40 and a breathing mouth valve (not shown in the drawings).

[0051] The gas in the breathing circulation air circuit is purified by the filter 200, and then inhaled by the diver through the inhalation buffer bag 30 and the breathing mouth valve. The diver's exhalation can be returned to the filter 200 through the breathing mouth valve and the exhalation buffer bag 40, or part of it can be returned to the filter 200 and part of it can be directly discharged.

[0052] The backpack 90 is used to accommodate the buoyancy regulating airbag 50 and the backboard 10. The fabric of the backpack 90 is woven fabric, and the flexible buffer layer is lined inside.

[0053] The backboard 10 is arranged inside the backpack 90, and its shape is adapted to the shoulders and back of the human body. Its width is trapezoidal, and a V-shaped bend is arranged at its central longitudinal axis.

[0054] Backboard 10: The four corners are curved and polished structures, with belly belt holes 10a on both sides of the bottom to install the belly belt 13, and shoulder belt holes 10b on both sides of the top to install the left shoulder belt 11 and the right shoulder belt 12. That is, the belly belt 13 is connected between the two sides of the bottom of the backboard 10; the left shoulder belt 11 and the right shoulder belt 12 have one end installed on the top of the backboard 10, and the other end of each is used to connect the belly belt 13 to restrain the backboard 10 on the back of the human body.

[0055] A bottom strap through hole 10c is provided at the middle of the bottom end of the back plate 10. The bottom strap through hole 10c is used to install a bottom strap 14. The bottom strap 14 is used to pass through the crotch of the human body to connect the abdominal belt 13 and restrain the back plate 10 on the back of the human body.

[0056] The abdominal belt 13, the left shoulder belt 11, the right shoulder belt 12 and the bottom belt 14 are respectively passed through the backpack 90 from the inside.

[0057] The middle of the abdominal belt 13 is provided with an abdominal belt buckle 131, so that it can be untied from the middle. The left and right halves of the abdominal belt 13 are each provided with a connecting buckle 132, and the left shoulder strap 11 and the right shoulder strap 12 are connected through the two connecting buckles 132, and the bottom strap 14 is connected through one of the connecting buckles 132. With this structure, the back plate 10 and the backpack 90 can be tied to the back of the human body through the abdominal belt 13, the left shoulder strap 11, the right shoulder strap 12 and the bottom strap 14. Therefore, the diving equipment is easy to wear, firm and comfortable.

[0058] The load plate 20 is arranged outside the backpack 90 , overlapped and fixedly assembled with the back plate 10 in a left-right symmetrical manner, and a reserved space is provided between the opposite sides of the back plate 10 .

[0059] The load plate 20 and the backing plate 10 are both provided with a V-shaped bend along the central longitudinal axis in the middle, and are connected to each other at the central longitudinal axis to form an assembly with an X-shaped cross section, so that the reserved space includes a left half 100a and a right half 100b. The load plate 20 and the backing plate 10 are fixedly assembled by two sets of bolt pairs, and the bolt pairs are composed of butterfly nuts 81 and cap bolts 82.

[0060] The buoyancy regulating airbag 50 is located at the lower part of the backpack 90, and the two branches are located in the left half 100a and the right half 100b of the reserved space in a one-to-one correspondence.

[0061] In the central longitudinal axis direction, the load plate 20 is shorter than the backing plate 10 and is biased toward the lower half of the backing plate 10 .

[0062] The left sides of the load plate 20 and the back plate 10 are respectively provided with a plurality of gas cylinder mounting through holes 101 , and the right sides of the load plate 20 and the back plate 10 are also respectively provided with a plurality of gas cylinder mounting through holes 101 .

[0063] The cylinder mounting through hole 101 is used to mount a high-pressure cylinder. For example, a cylinder strap is provided between the back plate 10 and the cylinder mounting through hole 101 of the load plate 20 , and the cylinder strap passes through the backpack 90 and binds the high-pressure cylinder to the rear side of the backpack 90 and the two sides of the filter 200 .

[0064] The V-shaped bend of the load plate 20 is used to accommodate the filter 200 and is provided with a plurality of strap through holes 20 a. The strap through holes 20 a are used to pass straps to bind the filter 200.

[0065] The filter 200 includes a strip-shaped rigid shell parallel to the longitudinal axis of the load plate 20 and detachably mounted on the middle of the outer side (back side) of the load plate 20 . A first air outlet port 210 and a first air inlet port 220 are respectively disposed on both sides of the top.

[0066] See also Figure 6 The first air outlet interface 210 and the first air inlet interface 210 respectively include a section of right-angle elbow pipe, which connects the opposite sides of the top of the filter 200 with the right-angle elbow pipe.

[0067] The assembly structure of the exhalation cushion bag 40 is basically the same as that of the inhalation cushion bag 30 , but the airflow direction is different.

[0068] The air inhalation cushion bag 30 is in a strip shape, with the air inlet end located in the above-mentioned reserved space and provided with a second air inlet interface 31, and the air outlet end attached and fixed to the upper surface of the left shoulder strap 11 and provided with a second air outlet interface 32. The second air inlet interface 31 passes through the backpack 90, is embedded in one side of the top of the load plate 20, and is directly connected to the first air outlet interface 210 through a threaded structure.

[0069] Specifically, the exhalation buffer bag 40 is in a strip shape, the outlet end is located in the above-mentioned reserved space, and is provided with a third outlet port 41, and the inlet end is attached to and fixed to the upper surface of the right shoulder strap 12, and is provided with a third inlet port 42. The third outlet port 41 passes through the backpack 90, is embedded in the other side of the top of the load plate 20, and is directly connected to the first inlet port 220 through a threaded structure.

[0070] The second air outlet port 32 and the third air inlet port 42 are both located close to the end of the cushion bag and are located below the clavicle on the chest of the human body after the belt is worn. With this structure, the external air path of the breathing mouth valve is shorter and located on the front side of the human body, which is convenient for handling related accidents.

[0071] The air inlet end of the inhalation cushion bag 30 and the air outlet end of the exhalation cushion bag 40 are respectively located above the buoyancy regulating airbag 50 .

[0072] Please note that Figure 2 and Figure 3 The following flexible components are drawn with dotted lines: left shoulder strap 11, right shoulder strap 12, abdominal belt 13, bottom strap 14, inhalation cushion bag 30, exhalation cushion bag 40, buoyancy adjustment airbag 50 and backpack 90, so as to distinguish them from the following rigid components: back plate 10, load plate 20, butterfly nut 81, cap bolt 82, second air inlet interface 31, second air outlet interface 32, third air outlet interface 41, second air inlet interface 41 and filter 200.

[0073] The housing of the filter 200 includes a cylindrical body, an upper end cover and a lower end cover. The side of the upper end cover is symmetrically provided with a first air outlet interface 210 and a first air inlet interface 220, and is also symmetrically provided with a first air supply interface 231 and a second air supply interface 232. The top surface of the upper end cover is provided with a cable connection seat 240.

[0074] The electronic components inside the filter 200 are connected to a wrist-worn monitoring instrument via a cable connection socket 240 and a cable. The wrist-worn monitoring instrument is also called a computer meter, which is loaded with an automatic control program to monitor the oxygen partial pressure of the circulating gas circuit and control the automatic gas replenishment of the electronic components.

[0075] The back plate 10 and the load plate 20 may be made of corrosion-resistant titanium alloy plates.

[0076] The assembly 100 of the back plate 10, the load plate 20 and the above-mentioned flexible components, as well as the filter 200, the high-pressure gas cylinder, the wrist-worn monitoring instrument and various pipeline components, adopts connection structures such as threads and snaps that can be easily disassembled and assembled to facilitate storage and inspection and maintenance.

[0077] This diving equipment has the following technical advantages.

[0078] 1) The breathing circulation gas circuit has a compact structure, which is easy to operate and can reduce safety hazards.

[0079] The backing plate 10 and the load plate 20 are overlapped and fixedly assembled but with a reserved space. The strip filter 200 is parallel to the longitudinal axis of the load plate 20 and is detachably assembled in the middle of the load plate 20. The inhalation buffer bag 30 and the exhalation buffer bag 40 are both strip-shaped, each with one end located in the above-mentioned reserved space and directly connected to the two interfaces on both sides of the top of the filter 200, and the other end is respectively attached to the upper surface of the two shoulder straps.

[0080] 2) The space layout is compact, further improving safety.

[0081] 3) The combination of rigid parts and soft and flexible parts makes it comfortable, convenient and firm to wear.

[0082] 4) The filter 200 and the high-pressure gas cylinder can be easily disassembled and assembled, which is convenient for storage and maintenance.

[0083] In another embodiment, the assembly of the load plate 10 and the backing plate 20 can be a cage-shaped frame with open upper and lower ends. A flexible pad is provided on the front side of the cage-shaped frame to replace the backpack 90. ​​The filter 200 is vertically arranged in the middle of the rear side of the cage-shaped frame, and the high-pressure gas cylinder is vertically arranged at the rear side of the cage-shaped frame. One end of the inhalation buffer bag 30 and the exhalation buffer bag 40 are respectively located in the cage-shaped frame, and the other ends of the two extend out of the cage-shaped frame.

[0084] In another embodiment, the filter 200 is pre-fixed and assembled on a filter mounting frame, and all high-pressure gas cylinders are pre-fixed and assembled on the gas cylinder mounting frame. A plurality of snap holes are provided in the middle of the back side of the load plate 20 for mounting the filter mounting frame, and the gas cylinder mounting through holes 101 on the side thereof are used for snap connection to the gas cylinder mounting frame.

[0085] In another embodiment, the back plate 20 is firmly fixed in the backpack 90 , and the abdominal belt 13 , the left shoulder strap 11 , the right shoulder strap 12 and the bottom strap 14 are directly arranged at corresponding positions of the backpack 90 .

[0086] See also Figure 8a and Figure 8bIn another embodiment, the backing plate 10, the load plate 20 and the flexible component form an assembly 100'. In the assembly 100', the second air outlet interface 32 and the third air inlet interface 42 are both adjacent to the end of the buffer bag. The second air inlet interface 31 and the second air outlet interface 41 are both located in the middle of the buffer bag, rather than at the end. Most of the inhalation buffer bag 30' and the exhalation buffer bag 40' are located behind the human shoulder after being worn. The second air outlet interface 32 and the third air inlet interface 42 are respectively located above the human shoulder after being worn. With this structure, the portion of the two buffer bags outside the above-mentioned reserved space can be shortened.

[0087] In another embodiment, the backpack 90 is eliminated, and the buoyancy regulating airbag is disposed in a buoyancy vest, and the back plate 10 is a carbon fiber reinforced engineering plastic plate.

[0088] Embodiment 2

[0089] An assembly 100 for a backpack diving device is disclosed.

[0090] See also Figures 1 to 6 The assembly 100 includes a back plate 10 , a left shoulder strap 11 , a right shoulder strap 12 , a strip-shaped inhalation cushion bag 30 , a strip-shaped exhalation cushion bag 40 , and an abdominal belt 13 .

[0091] The shape of the back plate 10 is adapted to the shoulders and back of the human body.

[0092] The belly band 13 is used to be connected between the two sides of the bottom end of the back plate 10.

[0093] The left shoulder strap 11 and the right shoulder strap 12 each have one end mounted on the top of the back plate 10, and the other end of each is used to connect with the abdominal belt 13 to restrain the back plate 10 on the back of the human body;

[0094] The load plate 20 is overlapped and fixedly assembled with the back plate 10 in a left-right symmetrical manner, and a reserved space is provided between the load plate 20 and the opposite side of the back plate 10 .

[0095] Air inlet buffer bag 30: the air inlet end is located in the reserved space and is provided with a second air inlet interface 31, the air outlet end is attached and fixed to the upper surface of one of the left shoulder strap and the right shoulder strap and is provided with a second air outlet interface 32, and the second air inlet interface is embedded in one side of the top of the load plate.

[0096] Exhalation buffer bag 40: the air outlet end is located in the reserved space and is provided with a third air outlet interface 41, the air inlet end is attached and fixed to the other upper surface of the left shoulder strap and the right shoulder strap, and is provided with a third air inlet interface 42, and the third air outlet interface is embedded in the other side of the top of the load plate.

[0097] The inhalation buffer bag 30 and the exhalation buffer bag 40 are used to form a breathing circulation air circuit together with the filter 200 and a breathing mouth valve (not shown in the drawings).

[0098] The filter 200 comprises a strip-shaped rigid shell, with a first air outlet port 210 and a first air inlet port 220 respectively disposed on both sides of the top, parallel to the longitudinal axis of the load plate 20 , and detachably mounted on the middle of the outer side surface of the load plate 20 .

[0099] The second air inlet port 31 is used to directly connect to the first air outlet port 210 .

[0100] The third air outlet port 41 is used to directly connect to the first air inlet port 220 .

[0101] The second air outlet port 32 and the third air inlet port 42 are respectively located below the clavicle on the chest of the human body after the belt is worn. With this structure, the external air path of the breathing mouth valve is shorter and located at the front side of the human body, which is convenient for handling related accidents.

[0102] For other aspects of the assembly 100 , please refer to the description of the first embodiment.

[0103] In another embodiment, an assembly 100' for a backpack diving device is disclosed. Figure 8a and Figure 8b , the second air outlet interface 32 and the third air inlet interface 42 of the assembly 100' are both adjacent to the end of the buffer bag. The second air inlet interface 31 and the second air outlet interface 41 are both located in the middle of the buffer bag, rather than at the end. Most of the inhalation buffer bag 30' and the exhalation buffer bag 40' are located behind the human shoulder after being worn. The second air outlet interface 32 and the third air inlet interface 42 are respectively located above the human shoulder after being worn. With this structure, the part of the two buffer bags outside the above-mentioned reserved space can be shortened.

[0104] All the above embodiments and application examples are intended to introduce the technical concepts and features of the present application, so that those skilled in the art can understand and implement the technical solutions of the present application, but they do not constitute any limitation on the protection scope of the present application. Simple modifications or equivalent changes to the above embodiments are within the protection scope of the present application.

Claims

1. An assembly for a backpack diving device, characterized in that: The assembly includes: A backboard, the shape of which is adapted to the shoulders and back of the human body; The belly band is used to connect between the two sides of the bottom end of the backboard; A left shoulder strap and a right shoulder strap, each having one end mounted on the top of the backboard, and the other end of each strap being used to connect with the abdominal belt to restrain the backboard on the back of the human body; A load plate is symmetrically overlapped and fixedly assembled with the backing plate, and a reserved space is provided between the opposite sides of the backing plate; A strip-shaped air-inhalation cushion bag, the air inlet end of which is located in the reserved space and is provided with a second air inlet interface, and the air outlet end of which is attached and fixed to the upper surface of one of the left shoulder strap and the right shoulder strap and is provided with a second air outlet interface; and A strip-shaped exhalation buffer bag, the air outlet end of which is located in the reserved space and is provided with a third air outlet interface, and the air inlet end is attached and fixed to the other upper surface of the left shoulder strap and the right shoulder strap and is provided with a third air inlet interface; Wherein, the load plate and the back plate are both provided with a V-shaped bend in the middle along the central longitudinal axis, and are connected to each other at the central longitudinal axis to form an assembly with an X-shaped cross section, so that the reserved space includes left and right parts; The inhalation buffer bag and the exhalation buffer bag are used to form a breathing circulation air circuit with a filter and a breathing mouth valve; The filter comprises a strip-shaped rigid shell, with a first air outlet interface and a first air inlet interface respectively provided on both sides of the top, parallel to the longitudinal axis of the load plate, and detachably mounted in the middle of the outer side of the load plate; The first air outlet interface and the first air inlet interface each include a right-angle elbow pipe, which is connected to opposite sides of the top of the filter by the right-angle elbow pipe; The second air inlet interface is embedded in one side of the top of the load plate and is directly connected to the first air outlet interface through a threaded structure; The third air outlet interface is embedded in the other side of the top of the load plate and is directly connected to the first air inlet interface through a threaded structure; The second air outlet interface and the third air inlet interface are respectively located below the clavicle on the chest of the human body after being worn.

2. The assembly according to claim 1, characterized in that: The V-shaped bend of the load plate is used to accommodate the filter and is provided with a plurality of binding through holes, wherein the binding through holes are used to pass binding straps to bind the filter.

3. The assembly according to claim 1 or 2, characterized in that: The back plate has a trapezoidal width, and the four corners are angled structures with curve transitions. The two sides of the bottom are respectively provided with abdominal belt through holes for installing the abdominal belt, and the two sides of the top are respectively provided with shoulder strap through holes for installing the left shoulder strap and the right shoulder strap.

4. The assembly according to claim 3, characterized in that: A bottom strap through hole is provided in the middle of the bottom end of the backboard, and the bottom strap through hole is used to install a bottom strap, which is used to pass through the crotch of the human body to connect with the abdominal belt and bind the backboard to the back of the human body.

5. The assembly according to claim 1 or 2, characterized in that: In the central longitudinal axis direction, the load plate is shorter than the backing plate and is biased toward the lower half of the backing plate.

6. The assembly according to claim 2, characterized in that: The back plate is arranged in a backpack, the load plate is arranged outside the backpack, and the abdominal belt, the left shoulder belt, the right shoulder belt, the second air inlet interface and the third air outlet interface respectively pass through the backpack.

7. The assembly according to claim 6, characterized in that: The backpack diving equipment also includes a U-shaped buoyancy regulating airbag, which is located at the lower part of the backpack, and has two branches located at the left and right parts of the reserved space in a one-to-one correspondence.

8. The backpack diving equipment according to claim 1 or 2, characterized in that: The left sides of the load plate and the back plate are respectively provided with a plurality of gas cylinder installation through holes, and the right sides of the load plate and the back plate are also respectively provided with a plurality of gas cylinder installation through holes, and the gas cylinder installation through holes are used to install high-pressure gas cylinders.

9. A backpack diving device, wherein the breathing circulation gas circuit comprises a filter, an inhalation buffer bag and an exhalation buffer bag, characterized in that Also includes: A backboard, the shape of which is adapted to the shoulders and back of the human body; The belly band is used to connect between the two sides of the bottom end of the backboard; The left shoulder strap and the right shoulder strap each have one end mounted on the top of the back plate, and the other end of each is used to connect with the abdominal belt to restrain the back plate on the back of the human body; and A load plate is symmetrically overlapped and fixedly assembled with the backing plate, and a reserved space is provided between the opposite sides of the backing plate; Wherein, the load plate and the back plate are both provided with a V-shaped bend in the middle along the central longitudinal axis, and are connected to each other at the central longitudinal axis to form an assembly with an X-shaped cross section, so that the reserved space includes left and right parts; The filter comprises a strip-shaped rigid shell, which is parallel to the longitudinal axis of the load plate and is detachably mounted on the middle of the outer side of the load plate, and has a first air outlet interface and a first air inlet interface respectively disposed on both sides of the top end; The first air outlet interface and the first air inlet interface each include a right-angle elbow pipe, and the right-angle elbow pipe is used to connect two opposite sides of the top of the filter; The air inhalation buffer bag is in a strip shape, the air inlet end is located in the reserved space, and is provided with a second air inlet interface, the air outlet end is attached and fixed to the upper surface of one of the left shoulder strap and the right shoulder strap, and is provided with a second air outlet interface, the second air inlet interface is embedded in one side of the top of the load plate, and is directly connected to the first air outlet interface through a threaded structure; The exhalation buffer bag is in a strip shape, the air outlet end is located in the reserved space, and is provided with a third air outlet interface, the air inlet end is attached and fixed to the other upper surface of the left shoulder strap and the right shoulder strap, and is provided with a third air inlet interface, the third air outlet interface is embedded in the other side of the top of the load plate, and is directly connected to the first air inlet interface through a threaded structure; The second air outlet interface and the third air inlet interface are respectively located below the clavicle on the chest of the human body after being worn.

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