Air tightness detector for self-rescuer

Abstract

The utility model relates to the technical field of gas tightness detection of chemical oxygen self-rescuers, in particular to a gas tightness detector for a self-rescuer, which comprises a shell, a detection cavity is arranged in the shell, a gas pump and a pressure sensor are arranged on the detection cavity, a gas pipe is arranged on one side of the detection cavity, a control panel is arranged in the shell, and a gas outlet is formed in the control panel. And a limiting mechanism is arranged on the surface of the shell. According to the self-rescuer, the baffle is rotated to one side of the shell, the reset spring enables the limiting plate to protrude on one side of the baffle through elastic force, the limiting rod is rotated on one side of the baffle through the stud to be perpendicular to the baffle, then the position of the limiting rod is locked on the stud through the locking nut, and at the moment, the self-rescuer is placed on the baffle; the self-rescuer is arranged in front of the code scanning module and is in contact with the limiting plate and the limiting rod, so that the self-rescuer is limited in front of the code scanning module, the code scanning module can conveniently and quickly scan an electronic tag of the self-rescuer, the scanning efficiency is improved, and the detection efficiency of the airtightness detector is further improved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology for chemical oxygen self-rescue devices, specifically to an airtightness testing instrument for self-rescue devices. Background Technology

[0002] Chemical oxygen self-rescue devices are commonly used safety equipment in high-risk industries such as mining and chemical industries, and their airtightness is directly related to the life safety of users.

[0003] Before the self-rescue device is tested for airtightness, the electronic tag on the self-rescue device needs to be scanned by the scanning module, and the tag information is written to a USB flash drive. The electronic tag is usually attached to a fixed position on the self-rescue device. The self-rescue device can be scanned by placing it in front of the scanning module. However, when placing the self-rescue device, it is easy for the position to be offset, which makes it difficult for the scanning module to scan the electronic tag accurately and quickly, thus greatly reducing the scanning efficiency and consequently reducing the detection efficiency of the airtightness tester. Utility Model Content

[0004] The purpose of this invention is to provide a self-rescue device airtightness detector to solve the problem mentioned in the background art where the electronic tag on the self-rescue device is prone to shifting during scanning, making it difficult for the scanning module to scan accurately and quickly, thus greatly reducing the scanning efficiency and consequently reducing the detection efficiency of the airtightness detector.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-rescue device airtightness detector, comprising a housing, an internal detection chamber, an air pump and a pressure sensor mounted on the detection chamber, an air tube on one side of the detection chamber, a control board inside the housing, the detection chamber being fixedly connected to the air outlet of the air pump via the air tube, a solenoid valve mounted on the air tube, and the control board being electrically connected to the solenoid valve, the air pump, and the pressure sensor respectively. A pressure cap is rotatably mounted on the top of the detection chamber, a sealing ring is provided between the pressure cap and the detection chamber, a handle is fixedly connected to the surface of the pressure cap, and a barcode scanning module, a storage USB flash drive, a printer, and a touch screen are provided on the surface of the housing. The screens are all electrically connected to the control board. A limit mechanism is provided on the surface of the housing. The limit mechanism includes a baffle, which is rotatably connected to the surface of the housing. A return spring is fixedly connected to the bottom of the baffle. A limit plate is fixedly connected to the surface of the return spring. The limit plate is slidably connected to the surface of the baffle. A stud is fixedly connected to the side of the baffle. A limit rod is rotatably connected to the surface of the stud. A lock nut is threaded onto the surface of the stud. A limit block is fixedly connected to the side of the baffle. A torsion spring is fixedly connected to the surface of the housing. A rotating rod is fixedly connected to the surface of the torsion spring. The rotating rod is rotatably connected to the surface of the housing. A support rod is fixedly connected to the bottom of the baffle.

[0006] Preferably, a guide hole is provided on the surface of the baffle, the limiting plate slides on the guide hole of the baffle, and the limiting plate is in an "L" shape.

[0007] Preferably, multiple sets of reset springs are provided and arranged linearly and uniformly, and the elastic force of the reset springs acts on the limiting plate.

[0008] Preferably, the limiting rod rotates on one side of the baffle via a stud, and the limiting block limits the rotational position of the limiting rod on one side of the baffle.

[0009] Preferably, the locking nut presses the limiting rod against the side of the baffle by rotating on the stud, and the locking nut restricts the position of the limiting rod after rotation by friction.

[0010] Preferably, the torsion spring acts on the rotating rod, which restricts the baffle on the surface of the housing on one side of the housing, and the baffle covers the barcode scanning module.

[0011] Preferably, the support rods are provided in two sets, and the two sets of support rods support the baffle on one side of the housing.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When this airtightness detector is used to detect the electronic tag of a self-rescue device, the baffle is rotated to one side of the housing, and the support rod contacts the table to support the baffle. The return spring causes the limiting plate to protrude from one side of the baffle through its elastic force. The limiting rod is rotated to be perpendicular to the baffle by a stud on one side of the baffle, and then the position of the limiting rod is locked on the stud by a locking nut. At this time, the self-rescue device is placed on the baffle and contacts the limiting plate and the limiting rod, thereby limiting the self-rescue device in front of the scanning module, which facilitates the scanning module to quickly scan the electronic tag of the self-rescue device, improves the scanning efficiency, and thus improves the detection efficiency of the airtightness detector.

[0014] 2. When the barcode scanning module is not in use, the airtightness detector rotates the rotating rod to a vertical position, causing the torsion spring to deform. This rotates the baffle to one side of the housing. Releasing the rotating rod causes the torsion spring to return the rotating rod to a parallel position, thus restricting the rotation of the baffle. The baffle can be folded and stored on one side of the housing, and the housing also shields the barcode scanning module to prevent dust from covering it. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the housing of this utility model;

[0017] Figure 3 This is a side view of the detection cavity structure of this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the baffle structure of this utility model, including front view, cross-section view, and bottom view.

[0019] Figure 5 This utility model Figure 1 Enlarged structural diagram at point A

[0020] Figure 6 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0021] In the diagram: 1. Control board; 2. Air pump; 3. Air pipe; 4. Solenoid valve; 5. Pressure cap; 6. Handle; 7. Sealing ring; 8. Detection chamber; 9. Barcode scanning module; 10. Storage USB flash drive; 11. Printer; 12. Touch screen; 13. Pressure sensor; 14. Housing; 21. Baffle; 22. Return spring; 23. Limit plate; 24. Stud; 25. Limit rod; 26. Locking nut; 27. Limit block; 28. Torsion spring; 29. ​​Rotating rod; 210. Support rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 One embodiment provided by this utility model:

[0024] A self-rescue device airtightness detector includes a housing 14, an internal detection chamber 8, an air pump 2 and a pressure sensor 13 mounted on the detection chamber 8, an air pipe 3 on one side of the detection chamber 8, a control board 1 inside the housing 14, the detection chamber 8 being fixedly connected to the air outlet of the air pump 2 via the air pipe 3, a solenoid valve 4 mounted on the air pipe 3, and the control board 1 being electrically connected to the solenoid valve 4, the air pump 2 and the pressure sensor 13 respectively. A pressure cap 5 is rotatably mounted on the top of the detection chamber 8, a sealing ring 7 is provided between the pressure cap 5 and the detection chamber 8, and a fixed connection is made to the surface of the pressure cap 5. The device has a handle 6. A barcode scanning module 9, a storage USB flash drive 10, a printer 11, and a touchscreen 12 are mounted on the surface of the housing 14, all electrically connected to the control board 1. The barcode scanning module 9 scans the self-rescue device's QR code, writing the self-rescue device information to the USB flash drive 10. The self-rescue device is placed into the cavity 8, and after sealing, the air pump 2 pressurizes it. The pressure sensor 12 transmits the pressure to the control board 1. When the set pressure is reached, the air pump 2 stops, and the solenoid valve 4 closes to maintain pressure. The control board software analyzes the data and displays the detection results on the display screen 12, simultaneously storing them on the USB flash drive 10. The printer 11 prints the detection results. The surface of the housing 14 is equipped with... The limiting mechanism includes a baffle 21, which is rotatably connected to the surface of the housing 14. A return spring 22 is fixedly connected to the bottom of the baffle 21. A limiting plate 23 is fixedly connected to the surface of the return spring 22 and slidably connected to the surface of the baffle 21. A stud 24 is fixedly connected to the side of the baffle 21. A limiting rod 25 is rotatably connected to the surface of the stud 24. A locking nut 26 is threaded onto the surface of the stud 24. A limiting block 27 is fixedly connected to the side of the baffle 21. A torsion spring 28 is fixedly connected to the surface of the housing 14. A locking nut 26 is threaded onto the surface of the torsion spring 28. A rotating rod 29 is connected to the surface of the housing 14. A support rod 210 is fixedly connected to the bottom of the baffle 21. This limiting mechanism sets a limit in front of the scanning module 9. When the baffle 21 is rotated to one side of the housing 14, the baffle 21 forms a limiting platform on one side of the housing 14. The limiting plate 23 and the limiting rod 25 on the baffle 21 limit the self-rescue device. When the self-rescue device is simultaneously in contact with the limiting plate 23 and the limiting rod 25, the electronic tag of the self-rescue device can be placed in a more suitable position directly in front of the scanning module 9, thereby realizing the rapid scanning of the electronic tag on the self-rescue device.

[0025] Furthermore, a guide hole is provided on the surface of the baffle 21, and the limiting plate 23 slides on the guide hole of the baffle 21. The limiting plate 23 is in an "L" shape and can slide to protrude from one side of the baffle 21, thereby forming a limit on the self-rescue device on the surface of the baffle 21.

[0026] Furthermore, multiple sets of reset springs 22 are provided and are arranged linearly and evenly. The elastic force of the reset springs 22 acts on the limiting plate 23, causing the limiting plate 23 to protrude from the surface of the baffle 21 under the elastic force of the reset springs 22.

[0027] Furthermore, the limiting rod 25 rotates on one side of the baffle 21 via the stud 24, and the limiting block 27 limits the rotation position of the limiting rod 25 on one side of the baffle 21, so that the limiting rod 25 and the baffle 21 are parallel, making it convenient to fold and store the limiting rod 25.

[0028] Furthermore, the locking nut 26 rotates on the stud 24 to press the limiting rod 25 against the side of the baffle 21. The locking nut 26 restricts the position of the limiting rod 25 after rotation through friction. The limiting rod 25 can be rotated to be perpendicular to the baffle 21. At this time, the limiting rod 25 and the limiting plate 23 can limit the self-rescue device.

[0029] Furthermore, the torsion of the torsion spring 28 acts on the rotating rod 29, which restricts the baffle 21 to the surface of the housing 14 on one side. The baffle 21 can contact the surface of the housing 14 by rotation. At this time, the rotating rod 29 can contact the side of the baffle 21 away from the housing 14 by rotation, so that the baffle 21 cannot rotate, thus limiting the baffle 21. During the rotation of the baffle 21, the limiting plate 23 on the baffle 21 is squeezed, which drives the return spring 22 to deform, thereby preventing the limiting plate 23 from affecting the storage of the baffle 21 on one side of the housing 14. In addition, the baffle 21 covers the barcode scanning module 9, which can prevent dust from covering the barcode scanning module 9 when it is not in use.

[0030] Furthermore, two sets of support rods 210 are provided, and the two sets of support rods 210 support the baffle 21 on one side of the housing 14. When the baffle 21 rotates and contacts the table, the support rods 210 support the baffle 21, ensuring the stability of the baffle 21 when used on one side of the housing 14.

[0031] Working principle: When performing electronic tag detection on the self-rescue device, the baffle 21 is rotated to one side of the housing 14, and the support rod 210 contacts the table to support the baffle 21. The return spring 22 causes the limiting plate 23 to protrude on one side of the baffle 21 through its elastic force. The limiting rod 25 is rotated on one side of the baffle 21 to be perpendicular to the baffle 21 through the stud 24, and then the locking nut 26 locks the position of the limiting rod 25 on the stud 24. At this time, the self-rescue device is placed on the baffle 21 and contacts the limiting plate 23 and the limiting rod 25, thereby limiting the self-rescue device in front of the scanning module 9, which facilitates the scanning module 9 to quickly scan the electronic tag of the self-rescue device, improves the scanning efficiency, and thus improves the detection efficiency of the airtightness detector.

[0032] When the barcode scanning module 9 is not in use, rotate the lever 29 to a vertical position, causing the torsion spring 28 to deform. Rotate the baffle 21 to one side of the housing 14. Release the lever 29, and the torque of the torsion spring 28 will cause the lever 29 to return to a parallel position. This restricts the rotation of the baffle 21, allowing the baffle 21 to be folded and stored on one side of the housing 14. The housing 14 also shields the barcode scanning module 9 to prevent dust from covering it.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-rescuer airtightness detector, characterized in that: The device includes a housing (14), inside which is a detection chamber (8), on which is an air pump (2) and a pressure sensor (13). An air pipe (3) is located on one side of the detection chamber (8). A control board (1) is located inside the housing (14). The detection chamber (8) is fixedly connected to the air outlet of the air pump (2) via the air pipe (3). A solenoid valve (4) is located on the air pipe (3). The control board (1) is connected to the air pump (2) via the air pipe (3). The solenoid valve (4), air pump (2), and pressure sensor (13) are electrically connected. A pressure cap (5) is rotatably mounted on the top of the detection chamber (8). A sealing ring (7) is provided between the pressure cap (5) and the detection chamber (8). A handle (6) is fixedly connected to the surface of the pressure cap (5). A barcode scanning module (9), a storage USB flash drive (10), a printer (11), and a touch screen (12) are provided on the surface of the housing (14), and all are electrically connected to the control board (1). A limiting mechanism is provided on the surface of (14), the limiting mechanism including a baffle (21), the baffle (21) being rotatably connected to the surface of the housing (14), a return spring (22) being fixedly connected to the bottom of the baffle (21), a limiting plate (23) being fixedly connected to the surface of the return spring (22), the limiting plate (23) being slidably connected to the surface of the baffle (21), and a stud (24) being fixedly connected to the side of the baffle (21). A limit rod (25) is rotatably connected to the surface of the stud (24), a locking nut (26) is threadedly connected to the surface of the stud (24), a limit block (27) is fixedly connected to the side of the baffle (21), a torsion spring (28) is fixedly connected to the surface of the housing (14), a rotating rod (29) is fixedly connected to the surface of the torsion spring (28), the rotating rod (29) is rotatably connected to the surface of the housing (14), and a support rod (210) is fixedly connected to the bottom of the baffle (21).

2. The self-rescuer airtightness detector of claim 1, wherein: The baffle (21) has a guide hole on its surface, and the limiting plate (23) slides on the guide hole of the baffle (21). The limiting plate (23) is in an "L" shape.

3. The self-rescuer airtightness detector of claim 1, wherein: The reset springs (22) are provided in multiple sets and are arranged linearly and uniformly. The elastic force of the reset springs (22) acts on the limiting plate (23).

4. The self-rescuer airtightness detector of claim 1, wherein: The limiting rod (25) rotates on one side of the baffle (21) via a stud (24), and the limiting block (27) limits the rotation position of the limiting rod (25) on one side of the baffle (21).

5. The self-rescuer airtightness detector of claim 4, wherein: The locking nut (26) presses the limiting rod (25) against the side of the baffle (21) by rotating on the stud (24), and the locking nut (26) restricts the position of the limiting rod (25) after rotation by friction.

6. The self-rescuer airtightness detector of claim 1, wherein: The torsion of the torsion spring (28) acts on the rotating rod (29), which restricts the baffle (21) on the surface of the housing (14) on one side of the housing (14), and the baffle (21) covers the barcode scanning module (9).

7. The self-rescuer airtightness detector of claim 1, wherein: The support rods (210) are provided in two groups, and the two groups of support rods (210) support the baffle (21) on one side of the shell (14).

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