Automatic monitoring equipment for concentration of VOCs (volatile organic compounds) in ambient air volatile organic compounds

Abstract

The utility model discloses automatic monitoring equipment for the concentration of VOCs (volatile organic compounds) in ambient air, which comprises a detector main body, vent holes convenient for gas circulation are formed in two ends of the detector main body in a penetrating manner, and a detection head is arranged at the top of the inner wall of the detector main body and positioned between the two vent holes. A cleaning mechanism for cleaning the detection head is arranged between the top of the inner wall of the detector main body and the detection head, and the cleaning mechanism comprises a mounting frame. According to the automatic monitoring equipment for the concentration of the VOCs in the ambient air volatile organic compounds, through the arrangement of the cleaning mechanism, before the detection head works, a cleaning brush is driven by the driving mechanism to rotate around the surface of the detection head to clean the surface of the detection head, and the situation that foreign matter such as dust on the surface of the detection head influences the detection result of the detection head is effectively avoided; the detection head can effectively detect the concentration of VOCs in ambient air.

Description

Technical Field

[0001] The utility model relates to the technical field of ambient air monitoring, in particular to an automatic monitoring device for the concentration of VOCs in volatile organic compounds in ambient air. Background Art

[0002] Volatile organic compounds refer to organic compounds that have a high saturated vapor pressure (greater than 13.33 Pa), a low boiling point, a small molecular weight, and are easily volatile at room temperature under standard conditions. This substance is one of the main pollutants in the atmosphere, and is often represented by VOC or VOCs, while total volatile organic compounds are represented by TVOC. It is worth noting that VOCs does not refer to a specific pollutant, but a general term for a class of organic compounds with similar physical and chemical properties.

[0003] According to patent authorization announcement number CN 113252846 A, a method and device for monitoring the concentration of VOCs gas in flue oil smoke for long-term continuous monitoring is proposed. The oil smoke sampling method with a side branch structure and the automatic identification algorithm of cloud-based failed sensors are designed based on the characteristics of flue oil smoke, which is conducive to extending the life of gas sensors used for oil smoke VOCs monitoring and timely reminding monitoring personnel to replace failed sensors. On this basis, a device for monitoring the concentration of VOCs gas in oil smoke is proposed.

[0004] Existing automatic VOCs concentration monitoring equipment, such as the above-mentioned utility model, lacks cleaning of the concentration sensor before detecting the concentration of VOCs in the volatile organic compounds in the ambient air. After long-term use, dust attached to the surface of the concentration sensor can easily affect the detection result of the concentration sensor, which can easily lead to deviations in the monitoring of the VOCs concentration in the ambient air. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an automatic monitoring device for the concentration of VOCs in volatile organic compounds in ambient air, which solves the problem that the existing automatic monitoring device for the concentration of VOCs lacks cleaning of the concentration sensor before detection, and the dust attached to the surface of the concentration sensor after long-term use easily affects the detection results of the concentration sensor.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an automatic monitoring device for the concentration of VOCs in volatile organic compounds in ambient air, comprising a detector body, both ends of the detector body are penetrated with air vents for facilitating gas circulation, a detection head is arranged at the top of the inner wall of the detector body and between the two air vents, a cleaning mechanism for cleaning the detection head is arranged between the top of the inner wall of the detector body and the detection head, the cleaning mechanism comprises a mounting frame, the mounting frame is fixedly connected to the top of the inner wall of the detector body and is located on both sides of the detection head, the mounting frame is rotatably connected to a mounting shaft, a driving mechanism for driving the mounting shaft to rotate is arranged between the mounting shaft and the mounting frame, a cleaning brush is arranged at one end of the mounting shaft and located on the outside of the detection head, and a dust suction mechanism is arranged between the cleaning brush and the mounting frame.

[0007] Preferably, the driving mechanism comprises a driving motor, the driving motor is fixedly connected to the mounting frame, and the output end of the driving motor is fixedly connected to a driving worm.

[0008] Preferably, one end of the driving worm away from the driving motor passes through the mounting frame and extends to the inside of the mounting frame, and a driving worm wheel matched with the driving worm is fixedly connected to the surface of the mounting shaft.

[0009] Preferably, a dust cleaning brush is fixedly connected to one side of the cleaning brush close to the detection head, and the cleaning brush is a hollow structure and a dust suction hole is penetrated through the side close to the detection head.

[0010] Preferably, the dust suction mechanism includes a dust collector and a mounting cylinder, the dust collector is fixedly connected to the detector body, the mounting cylinder is fixedly connected to the mounting frame, the mounting cylinder has an internal rotating connecting seat, one end of the connecting seat is connected to a connecting pipe, and the end of the connecting pipe away from the connecting seat passes through the mounting cylinder and the mounting frame and is connected to the cleaning brush.

[0011] Preferably, one end of the connecting seat is rotatably connected to a connecting head, one end of the connecting head is connected to an air outlet pipe, one end of the air outlet pipe passes through the mounting tube and is connected to the inlet of the vacuum cleaner, and a preload spring is arranged between the connecting head and the mounting tube.

[0012] Beneficial Effects

[0013] The utility model provides an automatic monitoring device for the concentration of VOCs in ambient air. Compared with the prior art, it has the following beneficial effects:

[0014] (1) The automatic monitoring device for the concentration of VOCs in volatile organic compounds in ambient air has ventilation holes for facilitating gas circulation through both ends of the detector body, a detection head is arranged at the top of the inner wall of the detector body and between the two ventilation holes, a cleaning mechanism for cleaning the detection head is arranged between the top of the inner wall of the detector body and the detection head, the cleaning mechanism includes a mounting frame, the mounting frame is fixedly connected to the top of the inner wall of the detector body and is located on both sides of the detection head, a mounting shaft is rotatably connected to the mounting frame, a driving mechanism for driving the mounting shaft to rotate is arranged between the mounting shaft and the mounting frame, a cleaning brush is arranged at one end of the mounting shaft and located on the outside of the detection head, and a dust suction mechanism is arranged between the cleaning brush and the mounting frame. Through the setting of the cleaning mechanism, before the detection head works, the cleaning brush rotates around the surface of the detection head under the drive of the driving mechanism to clean the surface of the detection head, effectively preventing foreign matter such as dust on the surface of the detection head from affecting the detection result of the detection head, and the detection head can effectively detect the concentration of VOCs in ambient air.

[0015] (2) The automatic monitoring device for the concentration of VOCs in volatile organic compounds in ambient air comprises a vacuum cleaner and a mounting cylinder through a dust suction mechanism. The vacuum cleaner is fixedly connected to the detector body, the mounting cylinder is fixedly connected to the mounting frame, the mounting cylinder has a rotating connecting seat inside, one end of the connecting seat is connected to a connecting pipe, the end of the connecting pipe away from the connecting seat passes through the mounting cylinder and the mounting frame and is connected to a cleaning brush, one end of the connecting seat is rotatably connected to a connecting head, one end of the connecting head is connected to an air outlet pipe, one end of the air outlet pipe passes through the mounting cylinder and is connected to the inlet of the vacuum cleaner, a preload spring is arranged between the connecting head and the mounting cylinder, and through the arrangement of the vacuum suction mechanism, when the vacuum cleaner is in operation, dust and foreign matter brushed off enters the cleaning brush through the dust suction hole of the cleaning brush, and when the vacuum cleaner is in operation, the dust and foreign matter swept off are sucked away through the air outlet pipe and the connecting pipe, so as to avoid secondary pollution to the detection head and facilitate the centralized treatment of dust and foreign matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the cleaning mechanism of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the driving mechanism of the utility model;

[0019] Figure 4 It is a cross-sectional view of the dust collection mechanism of the utility model;

[0020] Figure 5 It is a three-dimensional diagram of the connector of the utility model.

[0021] In the figure: 1 detector body, 2 vent, 3 detection head, 4 cleaning mechanism, 41 mounting frame, 42 mounting shaft, 43 driving mechanism, 431 driving motor, 432 driving worm, 433 driving worm wheel, 44 dust collection mechanism, 441 dust collector, 442 mounting tube, 443 connecting seat, 444 connecting pipe, 445 connecting head, 446 exhaust pipe, 447 preload spring, 45 cleaning brush. DETAILED DESCRIPTION

[0022] 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.

[0023] The utility model provides two technical solutions:

[0024] Figure 1-5 The first embodiment is shown: an automatic monitoring device for the concentration of VOCs in volatile organic compounds in ambient air, comprising a detector body 1, both ends of the detector body 1 are penetrated with vent holes 2 for convenient gas circulation, a detection head 3 is arranged at the top of the inner wall of the detector body 1 and between the two vent holes 2, a cleaning mechanism 4 for cleaning the detection head 3 is arranged between the top of the inner wall of the detector body 1 and the detection head 3, the cleaning mechanism 4 comprises a mounting frame 41, the mounting frame 41 is fixedly connected to the top of the inner wall of the detector body 1 and is located on both sides of the detection head 3, the mounting frame 41 is rotatably connected to a mounting shaft 42, a driving mechanism 43 for driving the mounting shaft 42 to rotate is arranged between the mounting shaft 42 and the mounting frame 41, one end of the mounting shaft 42 and the detection head 3 is located A cleaning brush 45 is provided on the outside of the head 3, and a dust suction mechanism 44 is provided between the cleaning brush 45 and the mounting frame 41. The driving mechanism 43 includes a driving motor 431. The driving motor 431 has the function of forward and reverse rotation, and is connected to the control system and the power supply through a wire. The driving motor 431 is fixedly connected to the mounting frame 41, and the output end of the driving motor 431 is fixedly connected to a driving worm 432. The end of the driving worm 432 away from the driving motor 431 passes through the mounting frame 41 and extends to the inside of the mounting frame 41. The surface of the mounting shaft 42 is fixedly connected to a driving worm wheel 433 matched with the driving worm 432. A cleaning brush is fixedly connected to the side of the cleaning brush 45 close to the detection head 3. The cleaning brush 45 is a hollow structure and a dust suction hole is penetrated on the side close to the detection head 3.

[0025] Figure 2 and 4A second embodiment is shown, which mainly differs from the first embodiment in that a dust collecting mechanism 44 comprises a dust collector 441 and a mounting cylinder 442, the dust collector 441 being connected to a control system and a power supply via a wire, the dust collector 441 being fixedly connected to the detector body 1, the mounting cylinder 442 being fixedly connected to the mounting frame 41, the mounting cylinder 442 having an internal rotating connecting seat 443, one end of the connecting seat 443 being connected to a connecting pipe 444, one end of the connecting pipe 444 away from the connecting seat 443 passing through the mounting cylinder 442 and the mounting frame 41 and being connected to a cleaning brush 45, one end of the connecting seat 443 being rotatably connected to a connecting head 445, one end of the connecting head 445 being connected to an air outlet pipe 446, one end of the air outlet pipe 446 passing through the mounting cylinder 442 and being connected to the inlet of the dust collector 441, and a preload spring 447 being arranged between the connecting head 445 and the mounting cylinder 442.

[0026] Through the setting of the dust suction mechanism 44, the vacuum cleaner works, and the dust and foreign matter brushed off enters the cleaning brush 45 through the dust suction hole of the cleaning brush 45. The vacuum cleaner 441 works to suck away the dust and foreign matter swept off through the air outlet pipe 446 and the connecting pipe 444, avoiding secondary pollution of the detection head 3 and facilitating the centralized treatment of dust and foreign matter.

[0027] During use, the detection head 3 cooperates with the detector body 1 to detect the concentration of VOCs in the ambient air. When the detection head 3 needs to be cleaned, the drive motor 431 and the vacuum cleaner are turned on through the control system, and the drive motor 431 drives the drive worm 432 to rotate. The rotation of the drive worm 432 drives the drive worm wheel 433 and the installation shaft 42 to rotate together through the meshing action. The rotation of the installation shaft 42 drives the cleaning brush 45 to rotate to clean the detection head 3. The dust and foreign matter brushed off enters the cleaning brush 45 through the dust suction hole of the cleaning brush 45. The vacuum cleaner 441 works to suck away the dust and foreign matter swept away through the air outlet pipe 446 and the connecting pipe 444, so as to avoid secondary pollution to the detection head 3 and facilitate the centralized treatment of dust and foreign matter.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although 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. An automatic monitoring device for the concentration of volatile organic compounds (VOCs) in ambient air, comprising a detector body (1), Features: Both ends of the detector body (1) are penetrated by ventilation holes (2) for facilitating gas circulation; a detection head (3) is arranged at the top of the inner wall of the detector body (1) and between the two ventilation holes (2); a cleaning mechanism (4) for cleaning the detection head (3) is arranged between the top of the inner wall of the detector body (1) and the detection head (3); the cleaning mechanism (4) comprises a mounting frame (41); the mounting frame (41) is fixedly connected to the top of the inner wall of the detector body (1) and is located on both sides of the detection head (3); the mounting frame (41) is rotatably connected to a mounting shaft (42); a driving mechanism (43) for driving the mounting shaft (42) to rotate is arranged between the mounting shaft (42) and the mounting frame (41); a cleaning brush (45) is arranged at one end of the mounting shaft (42) and located outside the detection head (3); a dust suction mechanism (44) is arranged between the cleaning brush (45) and the mounting frame (41).

2. The automatic monitoring device for the concentration of volatile organic compounds (VOCs) in ambient air according to claim 1, Features: The driving mechanism (43) comprises a driving motor (431), the driving motor (431) is fixedly connected to the mounting frame (41), and the output end of the driving motor (431) is fixedly connected to a driving worm (432).

3. The automatic monitoring device for the concentration of volatile organic compounds (VOCs) in ambient air according to claim 2, Features: One end of the driving worm (432) away from the driving motor (431) passes through the mounting frame (41) and extends into the interior of the mounting frame (41); a driving worm wheel (433) adapted to the driving worm (432) is fixedly connected to the surface of the mounting shaft (42).

4. The automatic monitoring device for the concentration of volatile organic compounds (VOCs) in ambient air according to claim 1, Features: A dust cleaning brush is fixedly connected to a side of the cleaning brush (45) close to the detection head (3); the cleaning brush (45) is a hollow structure and a dust suction hole is provided through the side close to the detection head (3).

5. The automatic monitoring device for the concentration of volatile organic compounds (VOCs) in ambient air according to claim 1, Features: The dust collecting mechanism (44) comprises a dust collector (441) and a mounting tube (442), wherein the dust collector (441) is fixedly connected to the detector body (1), and the mounting tube (442) is fixedly connected to the mounting frame (41). The mounting tube (442) has an internal rotating connecting seat (443), and one end of the connecting seat (443) is connected to a connecting pipe (444), and the end of the connecting pipe (444) away from the connecting seat (443) passes through the mounting tube (442) and the mounting frame (41) and is connected to a cleaning brush (45).

6. The automatic monitoring device for the concentration of VOCs in ambient air according to claim 5, Features: One end of the connection seat (443) is rotatably connected to a connection head (445), one end of the connection head (445) is connected to an air outlet pipe (446), one end of the air outlet pipe (446) passes through the installation tube (442) and is connected to the inlet of the vacuum cleaner (441), and a preload spring (447) is provided between the connection head (445) and the installation tube (442).

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