Respirator carbon monoxide protection performance tester

Abstract

The utility model discloses a carbon monoxide protection performance tester for a respirator. The carbon monoxide protection performance tester comprises a box body, box doors are symmetrically hinged to the front end of the box body through a first hinge, a fixed cylinder is arranged in the box body, a carbon monoxide gas storage tank is placed in the fixed cylinder, an electromagnetic valve is connected in a gas outlet pipe of the carbon monoxide gas storage tank in series, and a rotating plate is hinged to a manhole in the top wall of the box body through a second hinge. A carbon monoxide sensor is arranged at the lower end of each rotating plate; a glass observation window I is arranged in each mounting groove in the box body; wherein a single-chip microcomputer is arranged at the upper end of the box body, the input end of the single-chip microcomputer is electrically connected with an external power source, the input end of the electromagnetic valve is electrically connected with the output end of the single-chip microcomputer, and the output end of the carbon monoxide sensor is electrically connected with the input end of the single-chip microcomputer. The use is more convenient, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of respirators, in particular to a respirator carbon monoxide protection performance tester. Background Art

[0002] Air respirator is a self-contained open air respirator. It is widely used in firefighting, chemical industry, shipbuilding, petroleum, smelting, warehouse, laboratory, mining and other departments. It is used by firefighters or emergency rescue personnel to safely and effectively extinguish fires, rescue and rescue in various environments such as dense smoke, toxic gas, steam or hypoxia. Air respirator is also called gas storage gas mask, sometimes also called fire mask. It uses compressed gas cylinder as gas source, but the gas contained in the cylinder is compressed air. In order to ensure the protective performance of the respirator, it is necessary to test the carbon monoxide protective performance of the respirator, and a tester is needed. Most of the existing testers measure the carbon monoxide concentration leaked by the respirator through a carbon monoxide sensor to measure the carbon monoxide protective performance of the respirator, but most of the carbon monoxide sensors are installed inside the instrument by bolts. When the carbon monoxide sensors need to be cleaned and replaced, they need to be removed one by one, and the internal space of the instrument is mostly narrow, which is not convenient for operation and use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a respirator carbon monoxide protection performance tester, which is convenient for cleaning and replacing the carbon monoxide sensor, is more convenient to use, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a respirator carbon monoxide protection performance tester, comprising a box;

[0005] Box body: The front end thereof is symmetrically hinged with a box door through hinge 1, a fixed cylinder is arranged inside the box body, a carbon monoxide gas storage tank is placed inside the fixed cylinder, a solenoid valve is connected in series in the gas outlet pipe of the carbon monoxide gas storage tank, a rotating plate is hinged in the inspection hole of the top wall of the box body through hinge 2, a carbon monoxide sensor is arranged at the lower end of the rotating plate, and a glass observation window 1 is arranged in the installation groove inside the box body;

[0006] Among them: a single-chip microcomputer is arranged at the upper end of the box body, the input end of the single-chip microcomputer is electrically connected to an external power supply, the input end of the solenoid valve is electrically connected to the output end of the single-chip microcomputer, and the output end of the carbon monoxide sensor is electrically connected to the input end of the single-chip microcomputer, which is convenient for cleaning and replacing the carbon monoxide sensor, more convenient to use, and has a wide range of applications.

[0007] Furthermore, a rubber sealing ring is provided on the upper side of the outer arc surface of the fixing tube to ensure the sealing of the respirator installation.

[0008] Furthermore, a sealing groove is provided inside the inspection hole, and a rubber sealing pad is provided inside the sealing groove to ensure the sealing of the inspection hole.

[0009] Furthermore, the front ends of the rotating plates are respectively provided with connecting plates, the interiors of the connecting plates are respectively provided with slots, the upper ends of the box bodies are respectively provided with studs, the outer arc surfaces of the studs are threadedly connected with nuts, the studs are installed in cooperation with the slots, the nuts are installed in cooperation with the connecting plates, and a handle is provided at the upper end of the rotating plate to fix the rotating plate.

[0010] Furthermore, fixing plates are provided at both left and right ends of the box body, and fixing holes are provided inside the fixing plates to facilitate fixing of the box body.

[0011] Furthermore, a glass observation window 2 is provided inside the box door to facilitate observation of the internal conditions of the box.

[0012] Furthermore, a handle 2 is provided at the front end of the door to facilitate opening the door.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] When the carbon monoxide sensor needs to be cleaned or replaced, the nut is removed by screwing with an external tool. After the nut no longer blocks the connecting piece, the rotating plate can be opened by a handle to quickly move the carbon monoxide sensor out of the box, thereby cleaning or replacing the carbon monoxide sensor. The sealing groove and rubber sealing gasket are provided to ensure the sealing of the rotating plate installation, making this tester convenient for cleaning or replacing the carbon monoxide sensor and more convenient for use in the carbon monoxide protection performance test of the respirator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0017] In the figure: 1 box body, 2 box door, 3 fixing cylinder, 4 carbon monoxide storage tank, 5 solenoid valve, 6 rotating plate, 7 carbon monoxide sensor, 8 single chip microcomputer, 9 glass observation window 1, 10 rubber sealing ring, 11 sealing groove, 12 rubber sealing pad, 13 connecting piece, 14 card slot, 15 stud, 16 nut, 17 handle 1, 18 fixing plate, 19 fixing hole, 20 glass observation window 2, 21 handle 2. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 ,This embodiment provides a technical solution: a respirator carbon monoxide protection performance tester, comprising a box 1;

[0020] Box body 1: The front end thereof is symmetrically hinged with a box door 2 through a hinge 1, a fixed cylinder 3 is arranged inside the box body 1, a carbon monoxide gas storage tank 4 is placed inside the fixed cylinder 3, a solenoid valve 5 is connected in series in the gas outlet pipe of the carbon monoxide gas storage tank 4, a rotating plate 6 is hinged with a hinge 2 in the inspection hole of the top wall of the box body 1, a carbon monoxide sensor 7 is arranged at the lower end of the rotating plate 6, a glass observation window 9 is arranged in the installation groove inside the box body 1, a rubber sealing ring 10 is arranged on the upper side of the outer arc surface of the fixed cylinder 3, a sealing groove 11 is opened inside the inspection hole, and a rubber sealing ring 11 is arranged inside the sealing groove 11 The front end of the rotating plate 6 is provided with a connecting piece 13, and the connecting piece 13 is provided with a slot 14 inside. The upper end of the box body 1 is provided with a stud 15, and the outer arc surface of the stud 15 is threadedly connected with a nut 16. The stud 15 is installed in cooperation with the slot 14, and the nut 16 is installed in cooperation with the connecting piece 13. The upper end of the rotating plate 6 is provided with a handle 17, and the left and right ends of the box body 1 are provided with a fixing plate 18, and the fixing plate 18 is provided with a fixing hole 19 inside. The interior of the box door 2 is provided with a glass observation window 20, and the front end of the box door 2 is provided with a handle 21. When the carbon monoxide protection performance of the respirator needs to be tested, the respirator to be tested is placed on the upper side of the outer arc surface of the fixing tube 3. The rubber sealing ring 10 ensures the sealing of the respirator installation. The solenoid valve 5 is opened by the single-chip microcomputer 8, and the carbon monoxide gas in the carbon monoxide storage tank 4 enters the interior of the respirator. At this time, the carbon monoxide sensor 7 detects the carbon monoxide concentration at different positions inside the box 1 and sends the detection result to the single-chip microcomputer 8. The single-chip microcomputer 8 calculates the average carbon monoxide concentration in the box 1, and the carbon monoxide protection of the respirator can be judged. The invention is convenient to use. When the carbon monoxide sensor 7 needs to be cleaned and replaced, the nut 16 is screwed off by an external tool. After the nut 16 no longer blocks the connecting piece 13, the rotating plate 6 can be opened by the handle 17 to quickly move the carbon monoxide sensor 7 out of the box body 1, so as to clean and replace the carbon monoxide sensor 7. The sealing groove 11 and the rubber sealing pad 12 are provided to ensure the sealing of the rotating plate 6 installation, so that the tester is convenient for cleaning and replacing the carbon monoxide sensor 7, and is more convenient for use in the carbon monoxide protection performance test of the respirator.

[0021] Among them: a single-chip microcomputer 8 is arranged at the upper end of the box body 1, the input end of the single-chip microcomputer 8 is electrically connected to the external power supply, the input end of the solenoid valve 5 is electrically connected to the output end of the single-chip microcomputer 8, and the output end of the carbon monoxide sensor 7 is electrically connected to the input end of the single-chip microcomputer 8, and the single-chip microcomputer 8 controls the normal operation of the solenoid valve 5 and the carbon monoxide sensor 7.

[0022] The working principle of the respirator carbon monoxide protection performance tester provided by the utility model is as follows: when the respirator needs to be tested for carbon monoxide protection performance, the respirator to be tested is sleeved on the upper side of the outer arc surface of the fixing tube 3, and the rubber sealing ring 10 ensures the sealing of the respirator installation. The solenoid valve 5 is opened through the single-chip microcomputer 8, and the carbon monoxide gas inside the carbon monoxide gas storage tank 4 enters the interior of the respirator. At this time, the carbon monoxide sensor 7 detects the carbon monoxide concentration at different positions inside the box 1 and sends the detection result to the single-chip microcomputer 8. The single-chip microcomputer 8 calculates the average carbon monoxide concentration in the box 1. It is convenient to use to judge the carbon monoxide protection performance of the respirator. When the carbon monoxide sensor 7 needs to be cleaned and replaced, the nut 16 is screwed off by an external tool. After the nut 16 no longer blocks the connecting piece 13, the rotating plate 6 can be opened by the handle 17 to quickly move the carbon monoxide sensor 7 out of the box body 1, so that the carbon monoxide sensor 7 can be cleaned and replaced. By setting the sealing groove 11 and the rubber sealing pad 12, the sealing of the rotating plate 6 installation is ensured, so that the tester is convenient for cleaning and replacing the carbon monoxide sensor 7, and is more convenient for use in the carbon monoxide protection performance test of the respirator.

[0023] It is worth noting that the solenoid valve 5 disclosed in the above embodiment can be 2W025-08, the carbon monoxide sensor 7 can be JEC7, and the single chip microcomputer 8 controls the operation of the solenoid valve 5 and the carbon monoxide sensor 7 using methods commonly used in the prior art.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Respirator carbon monoxide protection performance tester, characterized by: comprising a box body (1); Box body (1): a box door (2) is symmetrically hinged at its front end via hinge 1, a fixed cylinder (3) is arranged inside the box body (1), a carbon monoxide gas storage tank (4) is placed inside the fixed cylinder (3), a solenoid valve (5) is connected in series in the gas outlet pipe of the carbon monoxide gas storage tank (4), a rotating plate (6) is hinged in the inspection hole of the top wall of the box body (1) via hinge 2, a carbon monoxide sensor (7) is respectively arranged at the lower end of the rotating plate (6), and a glass observation window (9) is arranged in each installation groove inside the box body (1); Wherein: a single-chip microcomputer (8) is arranged at the upper end of the box body (1), an input end of the single-chip microcomputer (8) is electrically connected to an external power supply, an input end of the solenoid valve (5) is electrically connected to an output end of the single-chip microcomputer (8), and an output end of the carbon monoxide sensor (7) is electrically connected to an input end of the single-chip microcomputer (8).

2. The respirator carbon monoxide protection performance tester according to claim 1, characterized in that: A rubber sealing ring (10) is provided on the upper side of the outer arc surface of the fixing cylinder (3).

3. The respirator carbon monoxide protection performance tester according to claim 1, characterized in that: A sealing groove (11) is provided inside the inspection hole, and a rubber sealing pad (12) is provided inside the sealing groove (11).

4. The respirator carbon monoxide protection performance tester according to claim 1, characterized in that: The front ends of the rotating plates (6) are provided with connecting plates (13), the interiors of the connecting plates (13) are provided with slots (14), the upper ends of the box body (1) are provided with studs (15), the outer arc surfaces of the studs (15) are threadedly connected with nuts (16), the studs (15) are mounted in cooperation with the slots (14), the nuts (16) are mounted in cooperation with the connecting plates (13), and the upper end of the rotating plate (6) is provided with a handle (17).

5. The respirator carbon monoxide protection performance tester according to claim 1, characterized in that: The left and right ends of the box body (1) are both provided with fixing plates (18), and fixing holes (19) are provided inside the fixing plates (18).

6. The respirator carbon monoxide protection performance tester according to claim 1, characterized in that: A second glass observation window (20) is provided inside the box door (2).

7. The carbon monoxide protection performance tester of a respirator according to claim 1, characterized in that: The front end of the door (2) is provided with a handle 2 (21).

Images