Filler detection clamp and performance detection device for fire-fighting self-rescue respirator

Abstract

The utility model relates to the technical field of fire-fighting respirators, and discloses a fire-fighting self-rescue respirator filler detection clamp which comprises a front cover and a rear seat, the front cover and the rear seat are each of a hollow structure with one end open and the other end closed, and the open end of the front cover and the open end of the rear seat are detachably connected to form a shell with a containing cavity. The closed end of the front cover is provided with a breathing hole communicated with the interior of the front cover, the closed end of the rear seat is provided with a connecting hole communicated with the interior of the rear seat, the closed end of the rear seat is provided with a first mounting seat, the first mounting seat is a cylinder with two open ends, and the first mounting seat is communicated with the connecting hole. The respirator filler can be detected after being put into the clamp, after detection is completed, the detected filler is poured out, the clamp is cleaned, the clamp can be used for next filler detection, and the clamp can be repeatedly used, is low in cost and is environmentally friendly. The utility model further discloses a fire-fighting self-rescue respirator filler performance detection device which comprises a test box, an inspection box, an air extractor and the clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting breathing apparatus, in particular to a filling material detection fixture and a performance detection device for a fire-fighting self-rescue breathing apparatus. Background Art

[0002] Due to the lack of testing equipment, the existing domestic filtering fire-fighting self-rescue respirators require one-time performance testing of semi-finished or finished products on the production line. After the test, the reagents, filters and other materials in the products are scrapped, and the entire product including the canister and mask can only be scrapped. In order to reduce costs and protect the environment, the masks can only be retained after cutting and cleaning. However, the increased cutting and recycling work and dust during the cutting process affect production efficiency.

[0003] The prior art discloses a testing device for a fire-fighting, filtering, self-rescue respirator. The device comprises a frame, a control panel mounted on the frame, an inspection box mounted within the frame, a CO cylinder and an air cylinder mounted on one side of the frame and connected to the inspection box, and an air pump mounted at the bottom of the frame and connected to the inspection box. A mask testing fixture is located within the inspection box, and one side of the inspection box is provided with a pressure sensor, a CO concentration sensor, and a temperature and humidity sensor. This patent requires that a filtering gas mask with a canister be mounted on the mask testing fixture within the inspection box for testing. Therefore, after testing, the canister and the entire gas mask are discarded, resulting in high costs. Recycling also requires the additional steps of cutting and cleaning the mask, which is inefficient. Utility Model Content

[0004] The utility model aims to provide a reusable, low-cost and environmentally friendly fire-fighting self-rescue breathing apparatus filling material detection fixture and performance detection device.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a fire-fighting self-rescue breathing apparatus filling detection fixture, including a front cover and a rear seat, the front cover and the rear seat are both hollow structures with one end open and the other end closed, the open end of the front cover and the open end of the rear seat can be detachably connected to form a shell with a accommodating cavity, the closed end of the front cover is provided with a breathing hole communicating with its interior, the closed end of the rear seat is provided with a connecting hole communicating with its interior, the closed end of the rear seat is provided with a first mounting seat, the first mounting seat is a cylinder with two ends open, and the first mounting seat is communicated with the connecting hole.

[0006] As a preferred solution, it also includes a first sealing ring. A sealing groove is provided on the end surface of the first mounting seat away from the rear seat. The sealing groove is circumferentially arranged around the opening of the first mounting seat, and the first sealing ring is installed in the sealing groove.

[0007] As a preferred embodiment, an outer edge is provided at one end of the first mounting seat away from the rear seat, an end surface of the outer edge at the end away from the rear seat is flush with the end surface of the first mounting seat at the end away from the rear seat, and an outer radius of the outer edge gradually decreases from the end away from the rear seat in a direction approaching the rear seat.

[0008] As a preferred solution, the inner wall of the front cover is provided with an internal thread, the outer wall of the rear seat is provided with an external thread, and the front cover and the rear seat are threadedly connected via the internal thread and the external thread.

[0009] As a preferred embodiment, the front cover includes a cover body and a front baffle, the cover body is an annular structure, the front baffle is a spherical structure, the breathing hole is provided on the front baffle, the inner wall of one end of the cover body is provided with an annular lower supporting plate, and the outer edge of the front baffle is connected to the inner edge of the lower supporting plate.

[0010] As a preferred solution, the open end of the rear seat is provided with a pressure ring, the outer diameter of the pressure ring is smaller than the outer diameter of the rear seat, the outer sleeve of the pressure ring is provided with a second sealing ring, and the inner wall of the open end of the rear seat is connected to a ring-shaped upper support plate.

[0011] As a preferred embodiment, a simulation valve is further included, wherein the side wall of the rear seat is provided with a valve port identical to that inside the rear seat, and the simulation valve comprises a valve body, a valve plate and a valve cover, wherein the valve body is connected to the rear seat and communicates with the valve port, the valve plate is mounted on the valve body, and the valve cover is detachably connected to the valve body.

[0012] The present invention also provides a fire-fighting self-rescue breathing apparatus filling performance testing device, comprising a test box, an inspection box, an exhaust device and the testing fixture according to any one of claims 1 to 7, wherein a test port is provided in the test box, the inspection box is provided with an air inlet, the test port is connected to the air inlet through a first pipe, the inner wall of the test box is provided with a second mounting seat, the second mounting seat is a cylinder with openings at both ends, the second mounting seat is connected to the test port, the first mounting seat and the second mounting seat are detachably connected, the test box is provided with a plurality of test gas inlets communicating with the interior thereof, the test box and the inspection box are both connected to a plurality of gas sensors, the inspection box is provided with an exhaust port, and the exhaust port is connected to the exhaust device through a second pipe.

[0013] As a preferred embodiment, it also includes a buckle, which includes a first buckle, a second buckle, a locking bolt and a locking nut. The first buckle and the second buckle are both semicircular rings, one end of the first buckle and the second buckle are rotatably connected, and the other end of the first buckle and the second buckle are provided with a buckle seat, the buckle seat is provided with a buckle hole, and the locking bolt passes through the buckle holes of the two buckle seats and is connected to the locking nut.

[0014] As a preferred solution, it further includes an air intake device and a humidifier, wherein the air intake device is connected to the humidifier, and the humidifier is connected to the first pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model sets a clamp, which includes a detachably connected front cover and a rear seat. During testing, the filler is placed in the front cover, and then the rear seat is connected to the front cover to put the filler into the accommodating cavity formed by the front cover and the rear seat. Then the first mounting seat on the rear seat is connected to other detection devices, so that the test gas enters from the breathing hole of the front cover, passes through the filler in the accommodating cavity, and then the gas flowing out from the connecting hole of the rear seat and the first mounting seat is detected, so that the performance test of the filler can be realized. After the test is completed, the tested filler is poured out and the clamp is cleaned, and the clamp can be used for the next filler test. The clamp is reusable, low-cost, and environmentally friendly, so that the fire-fighting self-rescue respirator does not need to be tested by extracting the gas filter canister or the entire product. The detection device of the present invention is configured by arranging a second mounting seat on the inner wall of the test box, the second mounting seat being connected to the first mounting seat of the fixture, filling the test box with test gas, turning on the exhaust device, and allowing the test gas to enter the test box through the fixture. The gas in the test box is detected by a gas sensor, thereby realizing performance testing of the respirator filling in the fixture. After the test is completed, the fixture can be removed from the second mounting seat for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first-view structural schematic diagram of a fire-fighting self-rescue breathing apparatus filling material detection fixture according to an embodiment of the present utility model.

[0018] Figure 2 It is a second perspective structural schematic diagram of the fire-fighting self-rescue breathing apparatus filling detection fixture according to an embodiment of the present utility model.

[0019] Figure 3 It is a structural schematic diagram of the front cover of an embodiment of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the rear seat of an embodiment of the present utility model.

[0021] Figure 5 It is a schematic diagram of the use of the fire-fighting self-rescue breathing apparatus filling material detection fixture according to the embodiment of the present utility model.

[0022] Figure 6 It is a structural schematic diagram of a fire-fighting self-rescue breathing apparatus filling performance detection device according to an embodiment of the present utility model.

[0023] Figure 7 It is a schematic diagram of the connection between the fixture and the test box in an embodiment of the utility model.

[0024] Figure 8 It is a structural schematic diagram of the second mounting base of an embodiment of the utility model.

[0025] Figure 9 It is a structural schematic diagram of a buckle according to an embodiment of the present utility model.

[0026] In the figure, 100 is a fixture; 110 is a front cover; 111 is a breathing hole; 112 is a cover body; 113 is a front baffle; 114 is a lower support plate; 120 is a rear seat; 121 is a connecting hole; 122 is a pressure ring; 123 is an upper support plate; 124 is a valve port; 130 is a receiving cavity; 140 is a first mounting seat; 141 is a sealing groove; 142 is an outer edge; 150 is a first sealing ring; 160 is a second sealing ring; 170 is a simulated valve; 171 is a valve body; 172 is a valve plate; 173 is a valve cover; 174 is a positioning column; 175 is a connecting rib; 200-test chamber; 210-test port; 220-second mounting base; 221-docking slot; 230-test gas inlet; 240-first pipeline; 300-test chamber; 310-air inlet; 320-exhaust port; 330-second pipeline; 400-exhaust device; 500-gas sensor; 600-snap; 610-first buckle; 620-second buckle; 630-locking bolt; 640-locking nut; 650-slot; 700-air inlet; 800-humidifier; 900-respirator filler. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] Example 1

[0031] like Figures 1 to 5 As shown, a fire-fighting self-rescue breathing apparatus filler 900 detection fixture 100 of a preferred embodiment of the utility model includes a front cover 110 and a rear seat 120. The front cover 110 and the rear seat 120 are both hollow structures with one end open and the other end closed. The open end of the front cover 110 and the open end of the rear seat 120 are detachably connected to form a shell with a accommodating cavity 130. The closed end of the front cover 110 is provided with a breathing hole 111 communicated with the interior thereof, and the closed end of the rear seat 120 is provided with a connecting hole 121 communicated with the interior thereof. The closed end of the rear seat 120 is provided with a first mounting seat 140. The first mounting seat 140 is a cylinder with openings at both ends, and the first mounting seat 140 is communicated with the connecting hole 121. This embodiment sets up a fixture 100, which includes a front cover 110 and a rear seat 120 that are detachably connected. During testing, the filler is placed in the front cover 110, and then the rear seat 120 is connected to the front cover 110 to put the filler into the accommodating cavity 130 formed by the front cover 110 and the rear seat 120. Then the first mounting seat 140 on the rear seat is connected to other testing devices, so that the test gas enters from the breathing hole 111 of the front cover, passes through the filler in the accommodating cavity 130, and then the gas flowing out from the connecting hole 121 of the rear seat 120 and the first mounting seat 140 is tested, so that the performance test of the filler can be achieved. After the test is completed, the tested filler is poured out and the fixture 100 is cleaned. The fixture 100 can be used for the next filler test. The fixture 100 is reusable, low-cost, and environmentally friendly, so that the fire-fighting self-rescue respirator does not need to extract the gas filter canister or the entire product for testing.

[0032] Furthermore, the fixture 100 of this embodiment includes a first sealing ring 150. A sealing groove 141 is provided on the end surface of the first mounting seat 140 away from the rear seat 120. The sealing groove 141 is circumferentially arranged around the opening of the first mounting seat 140, and the first sealing ring 150 is installed in the sealing groove 141. The provision of the first sealing ring 150 provides a sealing effect, thereby improving the accuracy of the detection.

[0033] In addition, in this embodiment, the end of the first mounting base 140 away from the rear seat 120 is provided with an outer edge 142. The end surface of the outer edge 142 away from the rear seat 120 is flush with the end surface of the first mounting base 140 away from the rear seat 120. The outer radius of the outer edge 142 gradually decreases from the end away from the rear seat 120 toward the rear seat 120. The provision of the outer edge 142 increases the diameter of the connection point, facilitating the connection of the fixture 100 with other testing devices. The gradually decreasing outer radius of the outer edge 142 not only ensures the strength of the outer edge 142 but also prevents cuts on the operator, improving safety.

[0034] In this embodiment, the inner wall of the front cover 110 is provided with an internal thread, and the outer wall of the rear seat 120 is provided with an external thread, and the front cover 110 and the rear seat 120 are threadedly connected by the internal thread and the external thread. The front cover 110 and the rear seat 120 are threadedly connected, which is convenient for installation and removal and is not easy to fall off.

[0035] In addition, the front cover 110 of this embodiment includes a cover body 112 and a front baffle 113. The cover body 112 has an annular structure, and the front baffle 113 has a spherical structure. The breathing hole 111 is provided on the front baffle 113. The inner wall of one end of the cover body 112 is provided with an annular lower support plate 114. The outer edge of the front baffle 113 is connected to the inner edge of the lower support plate 114. The lower support plate 114 can support the respirator filling 900 and play a role in positioning the respirator filling 900.

[0036] The open end of the rear seat 120 is provided with a blanking ring 122, the outer diameter of which is smaller than that of the rear seat 120. A second sealing ring 160 is provided on the outer surface of the blanking ring 122. The inner wall of the open end of the rear seat 120 is connected to an annular upper support plate 123. When the rear seat 120 is connected to the front cover 110, the respirator filling 900 is located between the lower support plate 114 of the front cover 110 and the upper support plate 123 of the rear seat 120, thereby securing the respirator filling 900 and preventing it from becoming uncontrollable. This ensures that gas entering through the breathing hole 111 of the front cover 110 will pass through the respirator filling 900 placed in the accommodating chamber 130, thereby achieving detection of the respirator filling 900. A second sealing ring 160 is disposed outside the pressure ring 122. When the front cover 110 and the rear seat 120 are connected, the second sealing ring 160 is pressed between the rear seat 120 and the lower support plate 114 of the front cover 110 to play a sealing role, thereby preventing the sealed cavity formed by the connection between the front cover 110 and the rear seat 120 from leaking.

[0037] Example 2

[0038] The difference between this embodiment and the first embodiment is that, based on the first embodiment, the clamp 100 of this embodiment further includes a simulation valve 170 .

[0039] In this embodiment, the fixture 100 further includes a simulated valve 170. The sidewall of the rear seat 120 is provided with a valve port 124 identical to that within the rear seat 120. The simulated valve 170 includes a valve body 171, a valve disc 172, and a valve cover 173. The valve body 171 is connected to the rear seat 120 and communicates with the valve port 124. The valve disc 172 is mounted on the valve body 171. The valve cover 173 is detachably connected to the valve body 171. The provision of the simulated valve 170 allows for balancing the pressure within the accommodating chamber 130 during testing. In this embodiment, the outer wall of the valve body 171 is provided with external threads, and the valve cover 173 is provided with internal threads. The valve body 171 and the valve cover 173 are threadedly connected via the external and internal threads. The simulated valve 170 also includes a positioning column 174. The valve body 171 is a cylinder with openings at both ends. One end of the valve body 171 is connected to the side wall of the rear seat 120 and communicates with the valve port 124. The positioning column 174 is arranged at the other end of the valve body 171, and the positioning column 174 is coaxially arranged with the valve body 171. The positioning column 174 is connected to the inner wall of the valve body 171 through a connecting rib 175. The valve plate 172 is provided with a positioning hole. The positioning column 174 passes through the valve plate 172 so that the valve plate 172 is installed on the positioning column 174.

[0040] The other structures of the clamp 100 of this embodiment are the same as those of the first embodiment and will not be described again here.

[0041] Example 3

[0042] like Figure 6 and Figure 9As shown, a performance testing device for a fire-fighting self-rescue breathing apparatus filler 900 of a preferred embodiment of the present utility model includes a test box 200, an inspection box 300, an exhaust device 400 and a testing fixture 100 of embodiment one or embodiment two. A test port 210 is provided in the test box 200, and the inspection box 300 is provided with an air inlet 310. The test port 210 is connected to the air inlet 310 through a first pipe 240. A second mounting seat 220 is provided on the inner wall of the test box 200. The second mounting seat 220 is a cylinder with openings at both ends. The second mounting seat 220 is connected to the test port 210. The first mounting seat 140 is detachably connected to the second mounting seat 220. The test box 200 is provided with a plurality of test gas inlets 230 communicating with its interior. Both the test box 200 and the inspection box 300 are connected to a plurality of gas sensors 500. The inspection box 300 is provided with an exhaust port 320. The exhaust port 320 is connected to the exhaust device 400 through a second pipe 330. The detection device of this embodiment is configured by providing a second mounting seat 220 on the inner wall of the test box 200. The second mounting seat 220 is connected to the first mounting seat 140 of the fixture 100. The test box 200 is filled with test gas, the exhaust device 400 is turned on, and the test gas enters the test box 300 through the fixture 100. The gas in the test box 300 is detected by the gas sensor 500, so that the performance of the respirator filling 900 in the fixture 100 can be detected. After the detection is completed, the fixture 100 can be removed from the second mounting seat 220 for cleaning.

[0043] like Figure 7 and Figure 8 As shown, the second mounting seat 220 of this embodiment has the same structure as the first mounting seat 140. The second mounting seat 220 is a cylindrical body with two open ends. One end of the second mounting seat 220 is connected to the inner wall of the test chamber 200, and the other end of the second mounting seat 220 is provided with an outer edge 142. During installation, the first mounting seat 140 and the second mounting seat 220 are docked. The outer edges 142 of the first and second mounting seats 140 and 220 ensure accurate alignment and facilitate connection with the snap 600. To ensure accurate testing, the size of the fixture 100 is similar to that of a respirator canister. Therefore, the diameter of the first mounting seat 140 connected to the fixture 100 is smaller, making connection inconvenient. Therefore, the outer edge 142 is provided. In addition, the end of the second mounting seat 220 of this embodiment, away from the inner wall of the test chamber, is provided with a docking groove 221. The docking groove 221 is arranged circumferentially around the opening of the second mounting seat 220 and is used to install the first sealing ring 150. When the fixture 100 is installed in the test chamber 200, the first mounting seat 140 faces the second mounting seat 220, and the first sealing ring 150 in the sealing groove 141 of the first mounting seat 140 is embedded in the docking groove 221, achieving positioning and sealing. The thickness of the first sealing ring 150 is greater than the sum of the depths of the sealing groove 141 and the docking groove 221.

[0044] Furthermore, if Figure 9 As shown, the device of this embodiment further includes a buckle 600, which includes a first buckle ring 610, a second buckle ring 620, a locking bolt 630, and a locking nut 640. The first buckle ring 610 and the second buckle ring 620 are both semicircular rings. One end of the first buckle ring 610 and the second buckle ring 620 are rotatably connected. The other end of the first buckle ring 610 and the second buckle ring 620 are each provided with a buckle seat, and the buckle seat is provided with a buckle hole. The locking bolt 630 passes through the buckle holes of the two buckle seats and is connected to the locking nut 640. When in use, the outer edge 142 of the first mounting seat 140 of the clamp 100 is opposite to the outer edge 142 of the second mounting seat 220 connected to the inner wall of the test chamber 200. Then, the first buckle ring 610 and the second buckle ring 620 are inserted over the first mounting seat 140 and the second mounting seat 220, tightening the first mounting seat 140 and the second mounting seat 220 to achieve the connection. In addition, in this embodiment, the first buckle 610 and the second buckle 620 are provided with a card slot 650 running through both ends thereof. When buckled, the card slot 650 of the first buckle 610 and the second buckle 620 form an annular groove, which can accommodate the outer edge 142 of the first mounting seat 140 and the second mounting seat 220, thereby making the connection more stable.

[0045] Furthermore, the detection device of this embodiment also includes an air intake device 700 and a humidifier 800. The air intake device 700 is connected to the humidifier 800, which is in turn connected to the second pipe 330. The gas exhausted from the air intake device 700 passes through the humidifier 800, increasing its humidity and simulating human exhalation. This gas then enters the fixture 100 through the second pipe 330, thereby enabling detection of the effect of exhalation on the performance of the respirator filler 900. Furthermore, the air intake device 700 of this embodiment is connected to the air extraction device 400, and a one-way valve is provided between the air intake device 700 and the air extraction device 400 to more accurately simulate human respiration. Optionally, the air intake device 700 and the air extraction device 400 may utilize a ventilator to simultaneously achieve both air extraction and exhalation.

[0046] The working process of the present invention is as follows: the respirator filler 900 is placed in the front cover 110 of the fixture 100, and then the rear seat 120 of the fixture 100 is tightened to the front cover 110. The respirator filler 900 is located in the accommodating cavity 130 formed by the front cover 110 and the rear seat 120 and is positioned between the lower support plate 114 and the upper support plate 123. The test box 200 is provided with a closable door. The door of the test box 200 is opened, and the fixture 100 is placed in the test box 200. The first mounting seat 140 of the fixture 100 is then docked with the second mounting seat 220 on the inner wall of the test box 200. The two are then connected using a buckle 600, and the door of the test box 200 is closed. CO or other gas is introduced into the test chamber 200 through the test gas inlet 230, and the exhaust device 400 is activated. The gas in the test chamber 200 flows through the respirator refill 900 in the fixture 100 and into the test chamber 300 through the first pipe 240. The gas sensors 500 in both test chambers 200 and 300 can detect the gas in both chambers. Moistened air simulating breath can also be injected into the fixture 100 through the exhaust device and humidifier 800 to further test the performance of the respirator refill 900. After the test is completed, the test chamber 200 is opened, the buckle 600 is removed, the fixture 100 is removed, the rear seat 120 is unscrewed, and the respirator refill 900 in the front cover 110 is poured out and cleaned, ready for testing the next batch of respirator refill 900.

[0047] In summary, the embodiment of the present invention provides a fire-fighting self-rescue breathing apparatus filler 900 detection fixture 100, which is provided by setting the fixture 100, and the fixture 100 includes a detachably connected front cover 110 and a rear seat 120. During the test, the filler is placed in the front cover 110, and then the rear seat 120 is connected to the front cover 110 to realize the filler being placed in the accommodating cavity 130 formed by the front cover 110 and the rear seat 120. Then, the first mounting seat 140 on the rear seat is connected to other detection devices to make the test gas The performance test of the filler can be achieved by entering from the breathing hole 111 of the front cover, passing through the filler in the accommodating cavity 130, and then detecting the gas flowing out from the connecting hole 121 of the rear seat 120 and the first mounting seat 140. After the test is completed, the tested filler is poured out and the fixture 100 is cleaned. The fixture 100 can be used for the next filler test. The fixture 100 is reusable, low-cost, and environmentally friendly, so that the fire-fighting self-rescue respirator does not need to be tested by extracting the gas filter canister or the entire product.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A fire-fighting self-rescue breathing apparatus filling material detection fixture, characterized in that: The invention comprises a front cover (110) and a rear seat (120), wherein the front cover (110) and the rear seat (120) are both hollow structures with one end open and the other end closed, the open end of the front cover (110) and the open end of the rear seat (120) are detachably connected to form a shell having a accommodating cavity (130), the closed end of the front cover (110) is provided with a breathing hole (111) communicating with the interior thereof, the closed end of the rear seat (120) is provided with a connecting hole (121) communicating with the interior thereof, and the closed end of the rear seat (120) is provided with a first mounting seat, the first mounting seat being a cylindrical body with two ends open, and the first mounting seat communicating with the connecting hole (121).

2. The fire-fighting self-rescue breathing apparatus filling detection fixture according to claim 1 is characterized in that: The invention also includes a first sealing ring (150), and a sealing groove (141) is provided on an end surface of the first mounting seat away from the rear seat (120). The sealing groove (141) is circumferentially arranged around the opening of the first mounting seat, and the first sealing ring (150) is installed in the sealing groove (141).

3. The fire-fighting self-rescue breathing apparatus filling material detection fixture according to claim 1, characterized in that: An outer edge (142) is provided at one end of the first mounting seat away from the rear seat (120), an end surface of the outer edge (142) away from the rear seat (120) is flush with an end surface of the first mounting seat away from the rear seat (120), and an outer radius of the outer edge (142) gradually decreases from the end away from the rear seat (120) in a direction approaching the rear seat (120).

4. The fire-fighting self-rescue breathing apparatus filling material detection fixture according to claim 1, characterized in that: The inner wall of the front cover (110) is provided with an internal thread, and the outer wall of the rear seat (120) is provided with an external thread. The front cover (110) and the rear seat (120) are threadedly connected via the internal thread and the external thread.

5. The fire-fighting self-rescue breathing apparatus filling material detection fixture according to claim 1, characterized in that: The front cover (110) comprises a cover body (112) and a front baffle (113); the cover body (112) is an annular structure; the front baffle (113) is a spherical structure; the breathing hole (111) is provided on the front baffle (113); an annular lower supporting plate (114) is provided on the inner wall of one end of the cover body (112); the outer edge of the front baffle (113) is connected to the inner edge of the lower supporting plate (114).

6. The fire-fighting self-rescue breathing apparatus filling material detection fixture according to claim 5, characterized in that: The open end of the rear seat (120) is provided with a pressure ring (122), the outer diameter of the pressure ring (122) is smaller than the outer diameter of the rear seat (120), the outer sleeve of the pressure ring (122) is provided with a second sealing ring (160), and the inner wall of the open end of the rear seat (120) is connected to an annular upper support plate (123).

7. The fire-fighting self-rescue breathing apparatus filling material detection fixture according to claim 1, characterized in that: The invention also includes a simulation valve (170), wherein the side wall of the rear seat (120) is provided with a valve port (124) identical to the interior thereof, and the simulation valve (170) includes a valve body (171), a valve plate (172) and a valve cover (173), wherein the valve body (171) is connected to the rear seat (120) and communicates with the valve port (124), the valve plate (172) is mounted on the valve body (171), and the valve cover (173) is detachably connected to the valve body (171).

8. A fire-fighting self-rescue breathing apparatus filling material performance detection device, characterized in that: The invention comprises a test box (200), a test box (300), an air extraction device (400) and a detection fixture according to any one of claims 1 to 7, wherein the test box (200) is provided with a test port (210), the test box (300) is provided with an air inlet (310), the test port (210) and the air inlet (310) are connected through a first pipe (240), the inner wall of the test box (200) is provided with a second mounting seat (220), the second mounting seat (220) is a cylinder with openings at both ends, and the second mounting seat (220) is provided with a second mounting seat (220) The two mounting seats (220) are in communication with the test port (210), the first mounting seat and the second mounting seat (220) are detachably connected, the test box (200) is provided with a plurality of test gas inlets (230) communicating with the interior thereof, the test box (200) and the inspection box (300) are both connected with a plurality of gas sensors (500), the inspection box (300) is provided with an air extraction port (320), and the air extraction port (320) is connected to the air extraction device (400) via a second pipe (330).

9. The fire-fighting self-rescue breathing apparatus filling material performance detection device according to claim 8, characterized in that: The invention also includes a buckle (600), wherein the buckle (600) includes a first buckle ring (610), a second buckle ring (620), a locking bolt (630) and a locking nut (640), wherein the first buckle ring (610) and the second buckle ring (620) are both semicircular rings, one end of the first buckle ring (610) and the second buckle ring (620) are rotatably connected, and the other end of the first buckle ring (610) and the second buckle ring (620) are both provided with a buckle seat, and the buckle seat is provided with a buckle hole, and the locking bolt (630) passes through the buckle holes of the two buckle seats and is connected to the locking nut (640).

10. The fire-fighting self-rescue breathing apparatus filling material performance detection device according to claim 8, characterized in that: It also includes an air intake device (700) and a humidifier (800), wherein the air intake device (700) is connected to the humidifier (800), and the humidifier (800) is connected to the first pipeline (240).

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