Nitrogen dioxide alarm

Abstract

The utility model discloses a nitrogen dioxide alarm apparatus, which belongs to the technical field of gas detection and comprises a protective shell and an analyzer entity, a storage cavity and a through groove are arranged in the protective shell, the analyzer entity is mounted in the storage cavity, an alarm apparatus and a power interface are respectively mounted on two sides of the analyzer entity, and a gas inlet chamber is arranged at the bottom of the analyzer entity. A limiting protection structure used for fixing the position of the air inlet chamber is arranged in the storage cavity. According to the utility model, the analyzer entity is fixed in the storage cavity by arranging the hook, and the analyzer entity is protected under the action of the protective shell, the outer door and the cover cap, so that the analyzer entity is protected except the gas inlet chamber at the bottom, and a worker can be effectively prevented from rotating the gas inlet chamber by arranging the mounting seat, the fixed rod and the gear; the sealing effect of the air inlet chamber is improved, the situation that the sealing performance is reduced after rotation in the using process is avoided, and the situation that liquid or fine particles enter the air inlet chamber to cause internal damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a nitrogen dioxide alarm. Background Art

[0002] In the mining and quarrying industries, the use of heavy machinery and blasting operations will generate a large amount of nitrogen dioxide, which is a toxic gas. Long-term exposure to a high concentration of nitrogen dioxide may cause respiratory problems, so monitoring nitrogen dioxide is very important.

[0003] Since most of these places are outdoors, the nitrogen dioxide alarm installed outdoors is exposed to strong light for a long time, and rainy and snowy weather can easily cause liquid or fine particles to enter, causing damage to the instrument and affecting the detection results. In addition, an existing fixed online gas alarm detector for monitoring nitrogen dioxide is provided with an air intake chamber at the bottom, which has an imported catalytic combustion gas sensor inside. When powered on, the air intake chamber needs to be sealed to prevent liquid or dust from entering, which can cause damage to the instrument. In order to prevent workers from rotating the air intake chamber to destroy the sealing environment during use, a limit protection structure needs to be set to avoid internal damage. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the instrument is damaged by direct sunlight when used outdoors in the mining and quarrying industries, and by the entry of liquid or fine particles in rainy and snowy weather, and thus proposes a nitrogen dioxide alarm.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A nitrogen dioxide alarm comprises a protective shell and an analyzer entity, wherein a storage cavity and a through slot are provided in the protective shell, the analyzer entity is installed in the storage cavity and an alarm and a power interface are respectively installed on both sides, an air inlet chamber is provided at the bottom of the analyzer entity, the air inlet chamber is provided at the bottom of the analyzer entity and is located above the through slot, a position limiting protection structure for fixing the position of the air inlet chamber is provided in the storage cavity, and a drainage component for conveying air into the storage cavity is provided outside the protective shell.

[0007] Preferably, the position limiting protection structure includes a fixing rod and a gear mounted on the air inlet chamber, the fixing rod is movably mounted on an inner wall of one side of the storage cavity via a mounting seat, and the end of the fixing rod and the tooth block of the gear realize a clamping structure.

[0008] Preferably, the drainage component includes a weather vane and a turntable movably mounted on the top of the protective shell, symmetrical drainage grooves are provided on both sides of the turntable, the weather vane and the drainage grooves are used in conjunction, and a filter plate is installed in the storage cavity located at the through groove.

[0009] Preferably, an outer door is hingedly installed on one side of the protective shell, a handle is provided on the outer door, a hook is installed on one side of the inner wall of the storage cavity, and the top of the analyzer entity is fixed in the storage cavity by passing a fixing belt through the hook.

[0010] Preferably, the bottom of the protective shell is mounted on the support rod via a base, and the top of the protective shell is mounted with a cap via a mounting rod.

[0011] Preferably, a mounting mesh is installed on one side of the inner wall of the storage cavity, and batteries are placed on the mounting mesh. The inner bottom of the storage cavity presents a slope with four high sides and a middle bottom, which is conducive to draining the infiltrated accumulated water.

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

[0013] 1. The analyzer entity is fixed in the storage cavity by setting a hook, and the analyzer entity is protected by the protective shell, outer door and cap, so that the analyzer entity is protected except for the air inlet at the bottom, avoiding direct sunlight to the analyzer entity and effectively preventing liquid or fine particles from entering the analyzer entity to cause chip damage.

[0014] 2. By providing a wind vane, a turntable and a drainage slot, the wind blows towards and drives the wind vane to rotate, thereby driving the turntable to rotate, thereby driving the wind to enter the storage cavity through the drainage slot, increasing the air content in the storage cavity, and helping the analyzer entity to better detect nitrogen in the air and improve the accuracy of the detection.

[0015] 3. The mounting seat, fixing rod and gear can effectively prevent workers from rotating the air intake chamber, improve the sealing effect of the air intake chamber, avoid the situation where the sealing is reduced due to rotation during use, and avoid the internal damage caused by the entry of liquid or fine particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a nitrogen dioxide alarm device proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a protective shell of a nitrogen dioxide alarm device proposed by the utility model;

[0018] Figure 3This is a schematic diagram of the internal installation structure of a protective shell of a nitrogen dioxide alarm proposed by the utility model;

[0019] Figure 4 The present invention is a schematic diagram of a limit protection structure of a nitrogen dioxide alarm device proposed by the present invention.

[0020] In the figure: 1. protective shell; 101. storage cavity; 102. through slot; 11. outer door; 12. hook; 2. support rod; 21. base; 3. analyzer body; 31. fixing belt; 32. air inlet chamber; 4. limit protection structure; 41. mounting seat; 42. fixing rod; 43. gear; 5. battery; 51. mounting mesh plate; 6. cover cap; 61. mounting rod; 7. drainage assembly; 701. drainage slot; 71. weather vane; 72. turntable; 73. filter plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] Reference Figure 1-3 A nitrogen dioxide alarm includes a protective shell 1 and an analyzer entity 3. A storage cavity 101 and a through slot 102 are provided in the protective shell 1. The analyzer entity 3 is installed in the storage cavity 101 and an alarm and a power interface are installed on both sides respectively. An air inlet chamber 32 is provided at the bottom of the analyzer entity 3. The air inlet chamber 32 is provided at the bottom of the analyzer entity 3 and is located above the through slot 102. A limiting protection structure 4 for fixing the position of the air inlet chamber 32 is provided in the storage cavity 101. A drainage component 7 for conveying air to the storage cavity 101 is provided outside the protective shell 1.

[0024] Furthermore, an outer door 11 is hingedly installed on one side of the protective shell 1, and a handle is provided on the outer door 11. A hook 12 is installed on one side of the inner wall of the storage cavity 101, and the analyzer entity 3 is fixed in the storage cavity 101 by passing a fixing belt 31 installed on the top through the hook 12.

[0025] It should be noted that the bottom of the protective shell 1 is mounted on the support rod 2 via the base 21 , and the top of the protective shell 1 is mounted with a cap 6 via a mounting rod 61 .

[0026] Further benefits of adopting the above are:

[0027] By installing the analyzer entity 3 inside the storage cavity 101, the analyzer entity 3 can be protected from direct sunlight, which can prevent the temperature of the analyzer entity 3 from rising and thus damage the internal chip. It can also prevent liquid and fine particles from entering the analyzer entity 3 in windy and rainy weather, thereby affecting the service life of the device. Installing the analyzer entity 3 by passing the fixing belt 31 through the hook 12 can prevent the infiltrated accumulated water from contacting the analyzer entity 3 for a long time and make the installation convenient.

[0028] Embodiment 2 proposed based on Embodiment 1:

[0029] Reference Figure 2-4 The position limiting protection structure 4 includes a fixing rod 42 and a gear 43 installed on the air inlet chamber 32. The fixing rod 42 is movably installed on the inner wall of one side of the storage cavity 101 through a mounting seat 41, and the end of the fixing rod 42 and the tooth block of the gear 43 realize a clamping structure.

[0030] It should be noted that the inner bottom of the storage cavity 101 presents a slope with four sides higher and the middle lower, which is conducive to draining a small amount of infiltrated liquid and avoiding liquid accumulation.

[0031] It is worth noting that: a mounting mesh plate 51 is installed on one side of the inner wall of the storage cavity 101, and a battery 5 is placed on the mounting mesh plate 51. The battery 5 can provide power to the analyzer entity 3 to avoid the situation where it cannot be used due to insufficient power.

[0032] A further advantage of adopting the above method is that during use, the air inlet chamber 32 is fixed by rotating the fixing rod 42 until the end of the fixing rod 42 is engaged with the teeth of the gear 43. Even if a worker accidentally rotates the air inlet chamber 32, the fixing effect cannot be achieved, thereby improving the sealing of the analyzer entity 3, preventing liquids and fine particles from entering and causing damage to the imported catalytic combustion gas sensor built into the air inlet chamber 32, and increasing the service life of the device.

[0033] Embodiment 3 proposed based on Embodiment 1:

[0034] Reference Figure 2-3 The drainage component 7 includes a weather vane 71 and a turntable 72 movably mounted on the top of the protective shell 1. Symmetrical drainage grooves 701 are provided on both sides of the turntable 72. The weather vane 71 and the drainage grooves 701 are used in conjunction with each other. A filter plate 73 is installed at the through groove 102 of the storage cavity 101.

[0035] Further benefits of adopting the above are:

[0036] Since the weather vane 71 is an existing technology, the operating steps are not repeated in this article. When the wind blows, the wind drives the weather vane 71 to rotate, and drives the turntable 72 to rotate, thereby driving the wind to enter the storage cavity 101 through the drainage groove 701, thereby increasing the speed of air circulation in the storage cavity 101, which helps the analyzer entity 3 to better detect nitrogen in the air and improve the accuracy of detection, thereby improving the practicality of the device. By installing a filter plate 73 in the through groove 102 and the drainage groove 701, impurities such as particles in the air can be effectively filtered to prevent impurities such as particles from entering the storage cavity 101 and affecting the use of the analyzer entity 3.

[0037] When the utility model is used, the bottom and top of the protective shell 1 are pre-installed with the support rod 2 and the cap 6 through the base 21 and the mounting rod 61 respectively, and the weather vane 71 and the turntable 72 are installed on the top of the protective shell 1 and the cap 6 respectively, which is helpful to increase the air circulation in the storage cavity 101 when the wind blows, which is helpful for the measurement of the analyzer entity 3, and then the analyzer entity 3 and the battery 5 are fixed in the storage cavity 101 by passing the fixing belt 31 through the hook 12 and installing the mounting mesh plate 51 on the inner wall of the storage cavity 101, so as to avoid the situation that the temperature of the analyzer entity 3 is increased and the liquid and fine particles enter and cause damage to the instrument. By rotating the fixing rod 42 so that the end of the fixing rod 42 is clamped with the gear 43, the angle of the air inlet chamber 32 is fixed, so as to avoid the situation that the worker rotates the air inlet chamber 32 during use, resulting in reduced sealing, thereby causing liquid and fine particles to enter.

[0038] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A nitrogen dioxide alarm, comprising a protective housing (1) and an analyzer entity (3), characterized in that: The protective shell (1) is provided with a storage cavity (101) and a through slot (102); the analyzer entity (3) is installed in the storage cavity (101) and an alarm device and a power interface are installed on both sides respectively; an air inlet chamber (32) is provided at the bottom of the analyzer entity (3); the air inlet chamber (32) is arranged at the bottom of the analyzer entity (3) and is located above the through slot (102); a position limiting protection structure (4) for fixing the position of the air inlet chamber (32) is provided in the storage cavity (101); and a drainage component (7) for conveying air into the storage cavity (101) is provided outside the protective shell (1).

2. A nitrogen dioxide alarm according to claim 1, characterized in that: The position limiting protection structure (4) comprises a fixing rod (42) and a gear (43) mounted on the air inlet chamber (32); the fixing rod (42) is movably mounted on an inner wall of one side of the storage cavity (101) via a mounting seat (41); and the end of the fixing rod (42) and the tooth block of the gear (43) form a clamping structure.

3. A nitrogen dioxide alarm according to claim 1, characterized in that: The drainage component (7) comprises a weather vane (71) and a rotating disk (72) movably mounted on the top of the protective housing (1); symmetrical drainage grooves (701) are provided on both sides of the rotating disk (72); the weather vane (71) and the drainage grooves (701) are used in conjunction with each other; and a filter plate (73) is installed in the storage cavity (101) at the through groove (102).

4. A nitrogen dioxide alarm according to claim 1, characterized in that: An outer door (11) is hingedly mounted on one side of the protective housing (1), and a handle is provided on the outer door (11). A hook (12) is mounted on one side of the inner wall of the storage cavity (101), and the top of the analyzer entity (3) is fixed in the storage cavity (101) by means of a fixing belt (31) passing through the hook (12).

5. A nitrogen dioxide alarm according to claim 1, characterized in that: The bottom of the protective shell (1) is mounted on the support rod (2) via a base (21), and the top of the protective shell (1) is mounted with a cover cap (6) via a mounting rod (61).

6. A nitrogen dioxide alarm according to claim 1, characterized in that: A mounting mesh plate (51) is mounted on one side of the inner wall of the storage cavity (101), and a storage battery (5) is placed on the mounting mesh plate (51). The inner bottom of the storage cavity (101) presents a slope with four high sides and a middle bottom, which is conducive to draining the infiltrated accumulated water.

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