Sulfur dioxide alarm convenient for air intake

Abstract

The utility model relates to the technical field of sulfur dioxide alarms, in particular to a sulfur dioxide alarm convenient for air intake, which comprises a sulfur dioxide alarm body, an air intake pipe is mounted at the top end of the sulfur dioxide alarm body, and an air intake head is movably screwed at a position close to the top end in the air intake pipe through a threaded pipe. A cross plate is installed in the air inlet head, a through hole is formed in the position, close to the middle, of the interior of the cross plate, a motor is installed at the top end of the cross plate, and the output end of the motor is in transmission connection with a rotating rod. Through the arrangement of parts such as an air inlet head, a threaded pipe, a cross plate, a through hole, a motor, a rotating rod and air suction fan blades, the problems that in the using process of an existing sulfur dioxide alarm instrument, external air cannot actively flow into the alarm instrument, and if the flow direction of toxic gas is different from the direction of the alarm instrument, the sulfur dioxide cannot flow into the alarm instrument can be effectively solved. The problems that an alarm needs to wait for poisonous gas to flow around to give an alarm, so that the alarm time is prolonged, and the using effect is poor exist.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur dioxide alarms, in particular to a sulfur dioxide alarm with convenient air intake. Background Art

[0002] In the production process of petroleum, chemical, electric power, coal and other industries, a large amount of toxic and harmful sulfur dioxide gas is produced, used or generated. These gases leak or diffuse into the air, causing harm to workers, equipment, environment, etc. In order to timely monitor the concentration of toxic and harmful gases in the workplace and ensure safe production, sulfur dioxide detection alarms must be equipped in the workplace. Sulfur dioxide alarms are used to detect sulfur dioxide toxic gases in the atmosphere, and the concentration is expressed in parts per million; they use industrial-grade high-reliability electrochemical or infrared sensors, which make them highly stable and reflect the level of high-tech development.

[0003] During use, the existing sulfur dioxide alarm cannot actively flow external air into the interior of the alarm. If the flow direction of the toxic gas is different from the direction of the alarm, the alarm needs to wait for the toxic gas to flow around it before it can alarm, which prolongs the alarm time and has poor use effect. Therefore, corresponding improvements are needed based on the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a sulfur dioxide alarm with convenient air intake to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sulfur dioxide alarm with convenient air intake, comprising a sulfur dioxide alarm body, an air intake pipe is installed at the top of the sulfur dioxide alarm body, and an air intake head is movably screwed to the top of the air intake pipe through a threaded tube, a cross plate is installed inside the air intake head, and a through hole is opened in the middle of the cross plate, a motor is installed at the top of the cross plate, and a rotating rod is transmission-connected to the output end of the motor, a suction fan blade is installed on the outer surface of the rotating rod near one end, a filter screen plate is movably placed inside the threaded tube, and four groups of mounting plates are installed at the bottom end of the filter screen plate, and mounting bolts are movably screwed to the inside of the four groups of mounting plates.

[0006] Preferably, a mounting hole is provided at the bottom end of the threaded tube near the mounting bolt, and one end of the mounting bolt extends into the mounting hole and is movably threadedly connected thereto.

[0007] Preferably, one end of the rotating rod passes through the interior of the cross plate through a through hole.

[0008] Preferably, the four groups of mounting plates are all L-shaped, the inner walls on one side of the four groups of mounting plates are all fitted with the inner wall of the threaded tube, and the inner walls on the other side of the four groups of mounting plates are all fitted with the bottom end of the threaded tube.

[0009] Preferably, the interiors of the air inlet head and the threaded tube are both hollow, and the interiors of the air inlet head and the threaded tube are interconnected with the interior of the air inlet pipe.

[0010] Preferably, the filter screen is located inside the threaded tube and is centrally arranged, and the side surface of the filter screen is arranged to fit the inner wall of the threaded tube.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The arrangement of components such as an air intake head, a threaded pipe, a cross plate, a through hole, a motor, a rotating rod and an exhaust fan blade can effectively solve the problem that the existing sulfur dioxide alarm cannot actively flow outside air into the interior of the alarm during use. If the flow direction of the toxic gas is different from the direction of the alarm, the alarm needs to wait for the toxic gas to flow around it before it can sound the alarm, thereby prolonging the alarm time and causing poor use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the main body of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the air intake pipe of the utility model.

[0015] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0016] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the air intake head of the utility model.

[0017] In the figure: 1. Sulfur dioxide alarm body; 11. Air intake pipe; 2. Air intake head; 21. Threaded pipe; 22. Mounting hole; 23. Cross plate; 24. Through hole; 25. Motor; 26. Rotating rod; 27. Suction fan blade; 3. Filter screen plate; 31. Mounting plate; 32. Mounting bolts. 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 Figures 1 to 4 The utility model provides a technical solution: a sulfur dioxide alarm with convenient air intake, comprising a sulfur dioxide alarm body 1, an air intake pipe 11 is installed at the top of the sulfur dioxide alarm body 1, and an air intake head 2 is movably screwed through a threaded tube 21 at the top of the air intake pipe 11, the interior of the air intake head 2 and the threaded tube 21 are both hollow, and the interiors of the air intake head 2 and the threaded tube 21 are interconnected with the interior of the air intake pipe 11, a cross plate 23 is installed inside the air intake head 2, and a through hole 24 is opened at the middle of the interior of the cross plate 23, a motor 25 is installed at the top of the cross plate 23, and a rotating rod 26 is transmission-connected to the output end of the motor 25, one end of the rotating rod 26 penetrates the interior of the cross plate 23 through the through hole 24, and a suction fan blade 27 is installed on the outer surface of the rotating rod 26 at one end.

[0020] A filter screen plate 3 is movably placed inside the threaded tube 21, and four groups of mounting plates 31 are installed at the bottom end of the filter screen plate 3. The filter screen plate 3 is located inside the threaded tube 21 and is centrally arranged, and the side surface of the filter screen plate 3 is fitted with the inner wall of the threaded tube 21. The four groups of mounting plates 31 are all L-shaped. The inner walls on one side of the four groups of mounting plates 31 are fitted with the inner wall of the threaded tube 21, and the inner walls on the other side of the four groups of mounting plates 31 are fitted with the bottom end of the threaded tube 21. The inside of the four groups of mounting plates 31 are all movably screwed with mounting bolts 32. The bottom end of the threaded tube 21 is provided with mounting holes 22 near the mounting bolts 32, and one end of the mounting bolt 32 extends into the inside of the mounting hole 22 and is movably screwed therewith.

[0021] During use, the user can start the motor 25, so that under the operation of the motor 25, the rotating rod 26 and the suction fan blades 27 can rotate accordingly. Under the rotation of the suction fan blades 27, the air containing sulfur dioxide from the outside can be sucked into the interior of the air intake head 2, and finally flows into the interior of the sulfur dioxide alarm body 1 through the threaded tube 21 and the air intake pipe 11. During this process, the setting of the filter plate 3 can filter impurities in the air, thereby preventing impurities in the air from flowing into the interior of the sulfur dioxide alarm body 1, thereby affecting the final detection result. When the air flows into the interior of the sulfur dioxide alarm body 1, the sulfur dioxide alarm body 1 can be used to perform corresponding detection on the sulfur dioxide content in the air. When the concentration of sulfur dioxide reaches the upper limit, an alarm sound can be generated.

[0022] After using it for a period of time, the user can rotate the air intake head 2 accordingly, so that the threaded tube 21 can be rotated accordingly, so that the threaded tube 21 can be transferred out from the inside of the air intake pipe 11, so that the air intake head 2 can be disassembled accordingly from the air intake pipe 11. After that, the user can rotate the four groups of mounting bolts 32 accordingly, so that one end of the four groups of mounting bolts 32 can be respectively rotated out from the inside of the corresponding mounting holes 22, so that the four groups of mounting plates 31 can be separated from the bottom end of the threaded tube 21. Finally, the four groups of mounting plates 31 can be moved to one side, so that the filter screen plate 3 can be moved out from the inside of the threaded tube 21, so that the filter screen plate 3 can be cleaned accordingly. After cleaning is completed, the filter screen plate 3 can be installed to the initial position according to the above operation, and the air intake head 2 and one end of the air intake pipe 11 are installed accordingly, so that the sulfur dioxide alarm body 1 can continue to be used normally.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sulfur dioxide alarm with convenient air intake, comprising a sulfur dioxide alarm body (1), characterized in that: An air intake pipe (11) is installed at the top of the sulfur dioxide alarm body (1), and an air intake head (2) is movably screwed to the top of the air intake pipe (11) through a threaded tube (21), a cross plate (23) is installed inside the air intake head (2), and a through hole (24) is opened at the middle of the cross plate (23), a motor (25) is installed at the top of the cross plate (23), and a rotating rod (26) is connected to the output end of the motor (25), and a suction fan blade (27) is installed on the outer surface of the rotating rod (26) at one end, a filter screen plate (3) is movably placed inside the threaded tube (21), and four groups of mounting plates (31) are installed at the bottom of the filter screen plate (3), and mounting bolts (32) are movably screwed to the inside of the four groups of mounting plates (31).

2. A sulfur dioxide alarm with convenient air intake according to claim 1, characterized in that: The bottom end of the threaded tube (21) is provided with a mounting hole (22) near the mounting bolt (32), and one end of the mounting bolt (32) extends into the interior of the mounting hole (22) and is movably threadedly connected thereto.

3. The sulfur dioxide alarm with convenient air intake according to claim 1 is characterized by: One end of the rotating rod (26) passes through the interior of the cross plate (23) via a through hole (24).

4. The sulfur dioxide alarm with convenient air intake according to claim 1 is characterized in that: The four groups of mounting plates (31) are all L-shaped, the inner walls on one side of the four groups of mounting plates (31) are all fitted with the inner wall of the threaded tube (21), and the inner walls on the other side of the four groups of mounting plates (31) are all fitted with the bottom end of the threaded tube (21).

5. The sulfur dioxide alarm with convenient air intake according to claim 1 is characterized by: The interiors of the air intake head (2) and the threaded tube (21) are both hollow, and the interiors of the air intake head (2) and the threaded tube (21) are both connected to the interior of the air intake pipe (11).

6. The sulfur dioxide alarm with convenient air intake according to claim 1 is characterized by: The filter screen plate (3) is located inside the threaded tube (21) and is centrally arranged, and the side surface of the filter screen plate (3) is arranged in contact with the inner wall of the threaded tube (21).

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