Air suction type dust detection optical densimeter

Abstract

The utility model provides an air suction type dust detection optical densimeter and relates to the technical field of dust detection. The air suction type dust detection optical densimeter comprises a cylinder body, connecting cylinders are fixedly connected to the two ends of the cylinder body, and the end, away from the cylinder body, of one connecting cylinder is in threaded connection with a photoelectric detector receiving end. According to the air suction type dust detection optical densimeter, the exhaust assembly and the air inlet assembly are arranged and can be combined with the transmitting end and the receiving end of a photoelectric detector for use, so that the high-resolution characteristic of the optical densimeter can be kept, and meanwhile, through holes are formed in a connecting cylinder, so that it is ensured that when air suction detection is carried out, the detection precision is improved. An air film can be formed at the transmitting end and the receiving end of the photoelectric detector, so that dust particles flowing in the cylinder body can be prevented from contaminating optical lenses at the transmitting end and the receiving end of the photoelectric detector, a protection effect is formed, optical elements are prevented from being contaminated, and practical application is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of dust detection technology, specifically to an air-suction dust detection optical densitometer. Background Technology

[0002] In dust environment testing equipment, real-time dust concentration is typically detected using dust detectors or optical densitometers. However, dust detectors have less than ideal resolution, measurement range, and resistance to contamination, while ordinary optical densitometers, although offering high resolution, are easily contaminated in high-concentration dust environments. Therefore, both of these detection systems have certain shortcomings in the application of new dust environment testing equipment.

[0003] Therefore, those skilled in the art provide an aspirating dust detection optical densitometer to solve the problems mentioned in the background art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an air-breathing dust detection optical densitometer, which solves the problems of easy contamination of optical components and low detection resolution mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an air-suction dust detection optical densitometer, including a cylinder body, with connecting cylinders fixedly connected to both ends of the cylinder body, one end of the connecting cylinder away from the cylinder body being threadedly connected to a photodetector receiving end, and the other end of the connecting cylinder away from the cylinder body being threadedly connected to a photodetector transmitting end, and through holes being equally spaced on the outer side of each connecting cylinder.

[0006] An air intake assembly is provided at the bottom of the cylinder and on the side of the photodetector receiver, and an exhaust assembly is provided at the bottom of the cylinder and on the side of the photodetector transmitter.

[0007] By employing the above technical solution, the exhaust and intake components can be combined with the transmitter and receiver of the photodetector, thereby maintaining the high-resolution characteristics of the optical densitometer. Simultaneously, by creating through holes in the connecting cylinder, an air film is formed at the transmitter and receiver of the photodetector during intake detection. This prevents dust particles flowing inside the cylinder from adhering to the optical lenses of the transmitter and receiver, providing protection and preventing contamination of the optical components, which is beneficial for practical applications.

[0008] Preferably, the air intake assembly includes an air intake pipe and a flange. The air intake pipe is installed at the bottom of the cylinder and located on one side of the photoelectric detector receiving end, and the flange is installed at the bottom of the air intake pipe.

[0009] The above technical solution uses a flange to connect the container containing the dust-mixed gas to the equipment, and the dust-mixed gas enters the interior of the cylinder through the inlet pipe.

[0010] Preferably, the exhaust assembly includes an exhaust pipe, an exhaust duct, and an exhaust fan. The exhaust pipe is installed at the bottom of the duct body and located on one side of the photodetector's emitting end. The exhaust duct is installed at the bottom of the exhaust pipe, and the exhaust fan is installed inside the exhaust duct.

[0011] Through the above technical solution, the exhaust fan can be used to discharge the gas inside the cylinder to the outside of the equipment through the exhaust pipe. At the same time, a negative pressure can be formed inside the cylinder, which can then better draw in the dust-mixed gas through the air inlet pipe.

[0012] Preferably, the inner end of the connecting cylinder away from the cylinder body is provided with an internal thread, and the outer end of the photodetector receiving end and the photodetector transmitting end near the connecting cylinder are provided with an external thread that cooperates with the internal thread.

[0013] The above technical solution utilizes the fit between internal and external threads to install the photodetector receiver and the photodetector transmitter on their respective connecting cylinders, while also facilitating the disassembly and maintenance of the photodetector receiver and the photodetector transmitter.

[0014] Preferably, a handle is installed at the top of the cylinder.

[0015] The above technical solution allows for easy carrying of the entire device using a handle.

[0016] Preferably, a filter screen is installed inside the exhaust duct at the end away from the exhaust pipe.

[0017] The above technical solution uses a filter to prevent large dust particles from entering the exhaust duct when the equipment is not in use.

[0018] This invention provides an air-breathing type optical densitometer for dust detection, which has the following beneficial effects:

[0019] This aspirating dust detection optical densitometer, by incorporating an exhaust and intake assembly, can be used in conjunction with the transmitter and receiver of a photodetector. This maintains the high-resolution characteristics of the optical densitometer. Furthermore, by creating through-holes in the connecting cylinder, an air film is formed at the transmitter and receiver of the photodetector during aspiration detection. This film prevents dust particles flowing inside the cylinder from adhering to the optical lenses of the transmitter and receiver, providing protection and preventing contamination of the optical components. This benefits practical applications. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure from the first perspective of the present invention;

[0021] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional disassembled structure of this utility model;

[0023] Figure 4 This is a cross-sectional view of the internal structure of this utility model.

[0024] In the diagram: 1. Cylinder body; 2. Connecting cylinder; 3. Photodetector receiver; 4. Photodetector transmitter; 5. Inlet pipe; 6. Flange; 7. Exhaust pipe; 8. Ventilation duct; 9. Exhaust fan; 10. Handle; 11. Filter screen. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides an air-suction type optical density meter for dust detection, including a cylinder body 1. A handle 10 is installed on the top of the cylinder body 1 for easy carrying of the entire device. Connecting cylinders 2 are fixedly connected to both ends of the cylinder body 1. Through holes are equally spaced on the outer sides of the connecting cylinders 2, allowing outside air to enter the cylinder body 1 while preventing large dust particles from entering the device. A photodetector receiver 3 is threadedly connected to the end of one connecting cylinder 2 furthest from the cylinder body 1, and a photodetector transmitter 4 is threadedly connected to the end of the other connecting cylinder 2 furthest from the cylinder body 1. The photodetector transmitter 4 emits a photoelectric signal, and the photodetector receiver 3 receives the photoelectric signal. By detecting the attenuation of light radiation from the photodetector transmitter 4 to the photodetector receiver 3, the dust concentration value can be obtained. Internal threads are formed on the inner ends of the connecting cylinders 2 furthest from the cylinder body 1, and external threads that mate with the internal threads are formed on the outer ends of the photodetector receiver 3 and the photodetector transmitter 4 near the connecting cylinder 2. By utilizing the fit between the internal and external threads, the photodetector receiver 3 and the photodetector transmitter 4 can be installed on the corresponding connecting cylinder 2, and the photodetector receiver 3 and the photodetector transmitter 4 can be easily disassembled and maintained.

[0027] Reference Figure 4In one aspect of this embodiment, an air intake assembly is provided at the bottom of the cylinder body 1 and on one side of the photodetector receiver 3. The air intake assembly includes an air intake pipe 5 and a flange 6. The air intake pipe 5 is installed at the bottom of the cylinder body 1 and on one side of the photodetector receiver 3, and the flange 6 is installed at the bottom of the air intake pipe 5. A container containing a dust-mixed gas is connected to the equipment via the flange 6, and the dust-mixed gas enters the interior of the cylinder body 1 through the air intake pipe 5.

[0028] Reference Figure 4 In one aspect of this embodiment, an exhaust assembly is provided at the bottom of the cylinder body 1 and on one side of the photodetector transmitter 4. The exhaust assembly includes an exhaust pipe 7, an exhaust duct 8, and an exhaust fan 9. The exhaust pipe 7 is installed at the bottom of the cylinder body 1 and on one side of the photodetector transmitter 4. The exhaust duct 8 is installed at the bottom of the exhaust pipe 7. The exhaust fan 9 is installed inside the exhaust duct 8. By utilizing the operation of the exhaust fan 9, the gas inside the cylinder body 1 can be discharged to the outside of the device through the exhaust pipe 7, while a negative pressure can be formed inside the cylinder body 1, thereby better performing the suction operation of the dust-mixed gas through the air inlet pipe 5. A filter screen 11 is installed at the end of the exhaust duct 8 away from the exhaust pipe 7. The filter screen 11 can prevent large particles of dust from the outside from entering the interior of the exhaust duct 8 when the device is not in use.

[0029] Working principle:

[0030] In use, first power on the equipment and electrically connect the exhaust fan 9, photodetector receiver 3, and photodetector transmitter 4 to the external control equipment for easy overall control. Simultaneously, use threads to install the photodetector receiver 3 and photodetector transmitter 4 onto the corresponding connecting cylinders 2. Figure 1 As shown;

[0031] Then, the container containing the dust mixture gas is connected to the equipment via flange 6. Next, the exhaust fan 9 is controlled to work, and the gas inside the cylinder 1 is discharged to the outside of the equipment via exhaust pipe 7. At the same time, a negative pressure is formed inside the cylinder 1, which can better draw the dust mixture gas into the cylinder 1 via air inlet pipe 5.

[0032] At this time, photoelectric signals are emitted through the photoelectric detector transmitter 4 and received by the photoelectric detector receiver 3. By detecting the light radiation attenuation from the photoelectric detector transmitter 4 to the photoelectric detector receiver 3, the concentration value of dust can be obtained.

[0033] When a negative pressure is formed inside the cylinder 1, clean air from the outside will enter the cylinder 1 through the through hole on the outside of the connecting cylinder 2. This will form an air film at the transmitting and receiving ends of the photodetector, which will prevent dust particles flowing inside the cylinder 1 from adhering to the optical lenses of the photodetector transmitting end 4 and the photodetector receiving end 3, thus providing protection and preventing the optical components from being contaminated, which is beneficial for practical applications.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A suction-type optical densitometer for dust detection, comprising a cylinder (1), characterized in that, Both ends of the cylinder body (1) are fixedly connected to connecting cylinders (2). One of the connecting cylinders (2) is threaded to a photoelectric detector receiver (3) at the end away from the cylinder body (1), and the other connecting cylinder (2) is threaded to a photoelectric detector transmitter (4) at the end away from the cylinder body (1). The outer sides of the connecting cylinders (2) are provided with through holes at equal intervals. An air intake assembly is provided at the bottom of the cylinder (1) and on one side of the photodetector receiver (3), and an exhaust assembly is provided at the bottom of the cylinder (1) and on one side of the photodetector transmitter (4).

2. The aspirating dust detection optical densitometer according to claim 1, characterized in that: The air intake assembly includes an air intake pipe (5) and a flange (6). The air intake pipe (5) is installed at the bottom of the cylinder body (1) and is located on one side of the photoelectric detector receiver (3). The flange (6) is installed at the bottom of the air intake pipe (5).

3. The aspirating dust detection optical densitometer according to claim 1, characterized in that: The exhaust assembly includes an exhaust pipe (7), an exhaust duct (8), and an exhaust fan (9). The exhaust pipe (7) is installed at the bottom of the cylinder body (1) and on one side of the photodetector transmitter (4). The exhaust duct (8) is installed at the bottom of the exhaust pipe (7), and the exhaust fan (9) is installed inside the exhaust duct (8).

4. The aspirating dust detection optical densitometer according to claim 1, characterized in that: The inner end of the connecting cylinder (2) away from the cylinder body (1) is provided with an internal thread, and the outer end of the photodetector receiving end (3) and the photodetector transmitting end (4) near the connecting cylinder (2) is provided with an external thread that cooperates with the internal thread.

5. The aspirating dust detection optical densitometer according to claim 1, characterized in that: A handle (10) is installed on the top of the cylinder (1).

6. The aspirating dust detection optical densitometer according to claim 3, characterized in that: A filter screen (11) is installed inside the exhaust duct (8) at the end away from the exhaust pipe (7).

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