Mixing cavity for dust detection
By designing a mixing cavity for dust detection, controlling the dust flow rate and natural light refraction, the problem of insufficient detection accuracy of the light scattering method is solved, and more accurate dust concentration measurement is achieved.
Patent Information
- Application Number
- CN202422277545.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing light scattering dust detection methods are affected by factors such as the size, shape and concentration of dust particles, resulting in inaccurate detection results.
A mixed cavity for dust detection is designed, including a hollow rectangular cavity, an inlet port, an outlet port, a light inlet port and an outlet port. By controlling the dust flow rate and the refraction of natural light, the laser light is ensured to fully contact with the dust and reduce the impact of natural light.
It improves the accuracy of dust detection, ensures that the detection results are more accurate, and avoids the interference of dust accumulation in the cavity and natural light on the detection.
Smart Images
Figure CN223139323U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dust detection, and more specifically, it relates to a mixing cavity for dust detection. Background Art
[0002] The detection of dust concentration is crucial for environmental protection and industrial production safety. Laser technology has been widely used in the field of dust detection, mainly using the principle of light scattering to measure the dust concentration. Laser dust detection technology is favored for its high precision, high stability and convenience.
[0003] Currently, the light scattering method is the most commonly used dust detection method. Its working principle is that when a laser beam irradiates dust, the dust particles will scatter the laser. The scattered light is received by a photoelectric detector and converted into an electrical signal, thereby obtaining the dust concentration value.
[0004] However, the dust detection by the light scattering method is related to factors such as the intensity of the scattered light, the size, shape, and concentration of the dust particles. Both the dust and the scattered light will affect the detection result of the light scattering method. Therefore, a mixing cavity for dust detection is proposed to improve the existing problems. Summary of the Utility Model
[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a mixing cavity for dust detection.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A mixing cavity for dust detection, including a cavity component, and a mounting component installed on one side of the cavity component.
[0007] Among them, the cavity component includes a cavity, the cavity is set as a hollow rectangular structure, the top of the cavity is provided with a cavity top, a feed port is centrally penetrated through the cavity top, a discharge port is penetrated through the bottom of the cavity, and the aperture of the discharge port is larger than that of the feed port.
[0008] By adopting the above technical solution, the feed port is connected to the feeding device, and there is dust in the feeding device. The dust enters the detection device through the feed port. The discharge port is penetrated through the bottom of the cavity, and the aperture of the discharge port is larger than that of the feed port. The detected dust enters the next layer of detection device through the feed port. Among them, the feed port with a small aperture can control the flow rate of the dust entering, so that the dust can fully contact with the laser, and the discharge port with a large aperture is convenient for the dust to fall quickly, so as to avoid affecting the detection result due to the accumulation of dust in the cavity.
[0009] The utility model is further set as: A light inlet hole is penetrated through the side wall of the cavity, and a light outlet hole is opened on the side wall of the cavity away from the light inlet hole, and the aperture of the light inlet hole is smaller than that of the light outlet hole.
[0010] By adopting the above technical solution, the light incident hole is connected to the laser entering device, which facilitates the injection of the laser. An optical output hole is provided on the side wall of the cavity far from the light incident hole, and the optical output hole is connected to the refractive device. The natural light carried by the entering dust can be refracted and disappear through the optical output hole, avoiding the influence of natural light on the dust detection result. The aperture of the light incident hole is smaller than that of the optical output hole. The light incident hole communicates with the inlet of the laser. The smaller aperture of the light incident hole facilitates the concentrated injection of the laser, and the larger aperture of the optical output hole facilitates the passage of natural light for refraction, and can eliminate most of the natural light.
[0011] The present utility model is further arranged as follows: Two groups of light blocking plates are symmetrically arranged inside the cavity. Fixing holes are provided on the side wall of the cavity close to the light blocking plates, and threads are provided inside the fixing holes.
[0012] The present utility model is further arranged as follows: An installation seat is provided inside the fixing hole. The shape of the installation seat is cylindrical, and the shape of the installation seat is adapted to the shape of the fixing hole.
[0013] The present utility model is further arranged as follows: Threads are circumferentially arranged on the side wall of the installation seat close to the fixing hole, and a fixing groove is provided at one end of the installation seat far from the threads.
[0014] By adopting the above technical solution, threads are circumferentially arranged on the side wall of the installation seat close to the fixing hole. The installation seat is installed at the position of the fixing hole by screwing, ensuring that the installation seat is fixedly installed at the position of the fixing hole. At the same time, the setting of the threads also facilitates the disassembly and installation of the installation seat. A fixing groove is provided at one end of the installation seat far from the threads, and the fixing groove provides an installation space for the detection device, facilitating the fitting installation of the detection device.
[0015] The present utility model is further arranged as follows: A light transmission hole is centrally penetrated through the fixing groove. The light transmission hole communicates with the fixing hole, and the aperture of the light transmission hole is smaller than that of the fixing hole.
[0016] By adopting the above technical solution, the light transmission hole communicates with the fixing hole, and the aperture of the light transmission hole is smaller than that of the fixing hole. There is a gap between the two groups of light blocking plates, and the middle gap communicates with the light transmission hole. The small-aperture light transmission hole facilitates the accurate contact of the detection device with the scattered light, improves the accuracy of dust detection, and makes the detection of dust concentration more accurate.
[0017] In summary, the present application includes at least one of the following beneficial technical effects:
[0018] 1. Dust enters the detection device through the feed inlet. There is a discharge outlet penetrating through the bottom of the cavity. The aperture of the discharge outlet is larger than that of the feed inlet. After detection, the dust enters the next layer of the detection device through the feed inlet. Among them, the feed inlet with a small aperture can control the flow rate of the dust entering, enabling the dust to fully contact the laser. The discharge outlet with a large aperture facilitates the rapid fall of the dust, preventing it from accumulating in the cavity and affecting the detection results.
[0019] 2. An optical outlet is provided on the side wall of the cavity away from the light inlet hole. The optical outlet is connected to the refractive device. The natural light carried by the dust entering can be refracted and disappear through the optical outlet, avoiding the influence of natural light on the dust detection results. The light inlet hole is communicated with the inlet of the laser. The aperture of the light inlet hole is small, facilitating the concentrated injection of the laser. The aperture of the optical outlet is large, facilitating the passage of natural light for refraction, and can eliminate most of the natural light, avoiding the influence of natural light on the dust concentration detection.
[0020] 3. The light-transmitting hole is communicated with the fixing hole. The aperture of the light-transmitting hole is smaller than that of the fixing hole. There is a gap between the two sets of light-blocking plates, and the middle gap is communicated with the light-transmitting hole. The light-transmitting hole with a small aperture facilitates the accurate contact of the detection device with the scattered light, improving the accuracy of dust detection and making the detection of dust concentration more precise. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic structural diagram of a mixing cavity for dust detection according to the present utility model.
[0022] Figure 2 In the present utility model Figure 1 isometric view.
[0023] Figure 3 In the present utility model Figure 1 front view.
[0024] Figure 4 In the present utility model Figure 1 explosion diagram.
[0025] Explanation of reference numerals: 1. Cavity assembly; 11. Cavity; 12. Light inlet hole; 13. Cavity top; 14. Feed inlet; 15. Optical outlet; 16. Fixing hole; 17. Light-blocking plate; 18. Discharge outlet;
[0026] 2. Mounting assembly; 21. Mounting base; 22. Fixing groove; 23. Light-transmitting hole; 24. Thread. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.
[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.
[0029] Please refer to Figures 1-4 , the present utility model provides the following technical solutions:
[0030] Embodiment 1
[0031] Refer to Figure 1 , a mixing cavity for dust detection, including a cavity component 1 and a mounting component 2 installed on one side of the cavity component 1.
[0032] Refer to Figure 2 and Figure 3 , the cavity component 1 includes a cavity 11, the cavity 11 is set as a hollow rectangular structure, a cavity top 13 is arranged at the top of the cavity 11, a feed port 14 is penetrated and opened at the center of the cavity top 13, the feed port 14 is connected to a feeding device, there is dust in the feeding device, and the dust enters the detection device through the feed port 14. A discharge port 18 is penetrated and opened at the bottom of the cavity 11, and the aperture of the discharge port 18 is larger than that of the feed port 14. The detected dust enters the next-layer detection device through the discharge port 18. Among them, the feed port 14 with a small aperture can control the flow rate of the dust entering, so that the dust can fully contact the laser, and the discharge port 18 with a large aperture facilitates the rapid fall of the dust, so as to avoid accumulation in the cavity 11 and affect the detection result.
[0033] Refer to Figure 2 and Figure 4 , a light inlet hole 12 is penetrated and opened on the side wall of the cavity 11, and the light inlet hole 12 is connected to a laser entry device to facilitate the entry of the laser. A light outlet hole 15 is opened on the side wall of the cavity 11 away from the light inlet hole 12, and the light outlet hole 15 is connected to a refractive device. The natural light carried by the entering dust can be refracted and disappear through the light outlet hole 15, avoiding the influence of the natural light on the dust detection result. The aperture of the light inlet hole 12 is smaller than that of the light outlet hole 15. The light inlet hole 12 is communicated with the inlet of the laser. The aperture of the light inlet hole 12 is small, which is convenient for the laser to be concentrated and injected. The aperture of the light outlet hole 15 is large, which is convenient for the natural light to pass through for refraction, and most of the natural light can be eliminated.
[0034] Refer to Figure 4 , two groups of light blocking plates 17 are arranged inside the cavity 11, and the two groups of light blocking plates 17 can block the influence of part of the natural light and increase the accuracy of dust detection. A fixing hole 16 is penetrated and opened on the side wall of the cavity 11 close to the light blocking plate 17, and a thread is arranged inside the fixing hole 16.
[0035] Refer to Figure 4 , an installation seat 21 is arranged inside the fixing hole 16, the shape of the installation seat 21 is cylindrical, and the shape of the installation seat 21 is adapted to the shape of the fixing hole 16.
[0036] See also Figure 4 A thread 24 is arranged around the side wall of the mounting seat 21 near the fixing hole 16. The mounting seat 21 is installed to the position of the fixing hole 16 by twisting, so as to ensure that the mounting seat 21 is fixed to the position of the fixing hole 16. At the same time, the arrangement of the thread 24 also facilitates the disassembly and installation of the mounting seat 21. A fixing groove 22 is provided at one end of the mounting seat 21 away from the thread 24. The fixing groove 22 provides an installation space for the detection device, which is convenient for the embedded installation of the detection device.
[0037] See also Figure 1 A light-transmitting hole 23 is provided through the center of the fixing groove 22, and the light-transmitting hole 23 is connected with the fixing hole 16. The aperture of the light-transmitting hole 23 is smaller than the aperture of the fixing hole 16. There is a gap between the two sets of light-blocking plates 17, and the gap in the middle is connected with the light-transmitting hole 23. The light-transmitting hole 23 with a small aperture facilitates the detection device to accurately contact the scattered light, thereby improving the accuracy of dust detection and making the detection of dust concentration more accurate.
[0038] Specifically, dust enters the cavity 11 through the feed port 14, carrying natural light with it. Part of the natural light reaches the refraction device through the light outlet 15 and is refracted. The laser is emitted into the cavity 11 through the light inlet 12, and then the laser contacts the dust flowing in from the feed port 14, thereby generating scattered light. The scattered light contacts the detection device to detect the dust concentration.
[0039] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
Claims
1. A mixing cavity for dust detection, characterized in that: It includes a cavity component (1) and a mounting component (2) mounted on one side of the cavity component (1). Among them, the cavity component (1) includes a cavity (11), the cavity (11) is set as a hollow rectangular structure, a cavity top (13) is provided at the top of the cavity (11), a feed port (14) is centrally penetrated through the cavity top (13), a discharge port (18) is penetrated through the bottom of the cavity (11), and the aperture of the discharge port (18) is larger than that of the feed port (14).
2. The hybrid cavity for dust detection according to claim 1, wherein: A light inlet hole (12) is penetrated through the side wall of the cavity (11), a light outlet hole (15) is provided on the side wall of the cavity (11) away from the light inlet hole (12), and the aperture of the light inlet hole (12) is smaller than that of the light outlet hole (15).
3. The mixing cavity for dust detection according to claim 2, wherein: Two groups of light blocking plates (17) are symmetrically arranged inside the cavity (11), a fixing hole (16) is provided on the side wall of the cavity (11) close to the light blocking plate (17), and threads are provided inside the fixing hole (16).
4. A mixing cavity for dust detection according to claim 3, characterized in that: A mounting seat (21) is provided inside the fixing hole (16), the shape of the mounting seat (21) is cylindrical, and the mounting seat (21) is adapted to the shape of the fixing hole (16).
5. The mixing cavity for dust detection according to claim 4, wherein: Threads (24) are circumferentially arranged on the side wall of the mounting seat (21) close to the fixing hole (16), and a fixing groove (22) is provided at one end of the mounting seat (21) away from the threads (24).
6. The mixing cavity for dust detection according to claim 5, wherein: A light transmission hole (23) is centrally penetrated through the fixing groove (22), the light transmission hole (23) is communicated with the fixing hole (16), and the aperture of the light transmission hole (23) is smaller than that of the fixing hole (16).