An 8-channel particle generator

Abstract

This utility model relates to the field of particle fogging technology, specifically disclosing an 8-channel particle generator, including a housing. A buffer mixing chamber is installed on the housing, and an air inlet multi-channel splitter assembly is also mounted on the housing. A first air inlet rotary switch component and a second air inlet rotary switch component are respectively arranged on both sides of the housing, and the first and second air inlet rotary switch components are connected by connecting pipes. A first air inlet flow regulating valve component and a second air inlet flow regulating valve component are also arranged on both sides of the housing, as well as a first air inlet pressure gauge component and a second air inlet pressure gauge assembly. By setting up multiple completely independent particle generation channels, particle mixing caused by residue in traditional single-channel devices is avoided from the source, ensuring the purity of the calibrated particles and significantly improving the calibration accuracy of the dust particle counter.

Description

Technical Field

[0001] This utility model relates to the field of particle fogging technology, specifically an 8-channel particle generating device. Background Technology

[0002] A dust particle counter is an instrument used to measure the number and size distribution of dust particles per unit volume in a clean environment. It can be widely used in manufacturing enterprises and research departments such as electronics, pharmaceutical workshops, semiconductors, optical or precision machining, plastics, painting, hospitals, environmental protection, and testing laboratories.

[0003] Currently, the calibration of dust particle counters is carried out according to the JJF1190-2008 dust particle counter calibration specification. However, there is no unified calibration equipment for dust particle counters. At the same time, different standard particles use the same atomization pipeline, which inevitably leads to cross-contamination of particles during the generation process. Utility Model Content

[0004] The purpose of this invention is to provide an 8-channel particle generator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an 8-channel particle generator, comprising a housing, a buffer mixing chamber mounted on the housing, and an air inlet multi-channel splitter assembly mounted on the housing. A first air inlet rotary switch component and a second air inlet rotary switch component are respectively disposed on both sides of the housing, and the first and second air inlet rotary switch components are connected by connecting pipes. A first air inlet flow regulating valve component and a second air inlet flow regulating valve component are respectively disposed on both sides of the housing, and a first air inlet pressure gauge component and a second air inlet pressure gauge assembly are respectively disposed on both sides of the housing. Additionally, a first monodisperse particle atomizer assembly and a second monodisperse particle atomizer assembly are respectively disposed on both sides of the housing. Furthermore, a monodisperse multi-channel outlet assembly is disposed on both sides of the housing, and the monodisperse multi-channel outlet assembly is connected to the buffer mixing chamber.

[0006] Furthermore, the intake multi-pipe splitter assembly includes an intake multi-pipe splitter a and an intake multi-pipe splitter b. The first intake port rotary switch component is connected to the intake multi-pipe splitter a, and the second intake port rotary switch component is connected to the intake multi-pipe splitter b through connecting pipes.

[0007] Furthermore, the single-distributed multi-pipe outlet assembly includes a single-distributed multi-pipe outlet a and a single-distributed multi-pipe outlet b, and the first air inlet rotary switch component, the first air inlet flow regulating valve component, the first air inlet pressure gauge component, the air inlet multi-pipe splitter a, and the single-distributed multi-pipe outlet a are connected in series.

[0008] Furthermore, the housing is also provided with a dilution port flow regulating valve and a dilution inlet pressure gauge, and the buffer mixing chamber is connected to the inlet pressure gauge.

[0009] Furthermore, the first air inlet rotary switch component includes air inlet rotary switch a, air inlet rotary switch b, air inlet rotary switch c, and air inlet rotary switch d; the second air inlet rotary switch component includes air inlet rotary switch e, air inlet rotary switch f, air inlet rotary switch g, and air inlet rotary switch h.

[0010] Furthermore, the first inlet flow regulating valve component includes inlet flow regulating valve a, inlet flow regulating valve b, inlet flow regulating valve c, and inlet flow regulating valve d; the second inlet flow regulating valve component includes inlet flow regulating valve e, inlet flow regulating valve f, inlet flow regulating valve g, and inlet flow regulating valve h.

[0011] Furthermore, the first inlet pressure gauge component includes inlet pressure gauge a, inlet pressure gauge b, inlet pressure gauge c, and inlet pressure gauge d; the second inlet pressure gauge component includes inlet pressure gauge e, inlet pressure gauge f, inlet pressure gauge g, and inlet pressure gauge h.

[0012] Furthermore, the first monodisperse particle atomizer assembly includes monodisperse particle atomizer a, monodisperse particle atomizer b, monodisperse particle atomizer c, and monodisperse particle atomizer d; the second monodisperse particle atomizer assembly components include monodisperse particle atomizer e, monodisperse particle atomizer f, monodisperse particle atomizer g, and monodisperse particle atomizer h.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up multiple completely independent particle generation channels, the particle mixing caused by residue in traditional single-pipe devices is avoided from the source, ensuring the purity of calibration particles and significantly improving the calibration accuracy of dust particle counters. 2. The dual-path symmetrical design supports synchronous or time-division independent output of particles of various sizes, meeting the batch calibration needs of multiple types of dust particle counters and significantly reducing the time cost of replacing standard particle solutions. 3. The buffer mixing chamber integrates the output particle flow of each channel, and the chamber design eliminates flow fluctuations, making the particle concentration uniform; together with the independent dilution gas path, the final output concentration can be flexibly adjusted to meet the needs of different calibration scenarios. 4. Each channel is independently equipped with a flow regulating valve, which can accurately adjust the gas flow rate of a single channel and control the concentration of atomized particles. In addition, each channel is equipped with a dedicated pressure gauge to monitor the atomized gas pressure in real time. Combined with the dilution gas pressure gauge, it ensures that the working pressure of the atomizer is consistent and the output particle size distribution is more uniform. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the installation method of the buffer mixing chamber and the shell provided in an embodiment of the present utility model; Figure 2 Specific structural schematic diagrams provided for embodiments of this utility model; Figure 3 This is a front view structural diagram provided for an embodiment of the present utility model.

[0016] Explanation of reference numerals in the attached diagram: 101, Inlet rotary switch a; 102, Inlet rotary switch b; 103, Inlet rotary switch c; 104, Inlet rotary switch d; 105, Inlet rotary switch e; 106, Inlet rotary switch f; 107, Inlet rotary switch g; 108, Inlet rotary switch h; 201, Inlet flow regulating valve a; 202, Inlet flow regulating valve b; 203, Inlet flow regulating valve c; 204, Inlet flow regulating valve d; 205, Inlet flow regulating valve e; 206, Inlet flow regulating valve f; 207, Inlet flow regulating valve g; 208, Inlet flow regulating valve h; 209, Dilution port flow regulating valve; 301, Inlet pressure gauge a; 302, Inlet pressure gauge b; 303, ... Air inlet pressure gauge c; 304, Air inlet pressure gauge d; 305, Air inlet pressure gauge e; 306, Air inlet pressure gauge f; 307, Air inlet pressure gauge g; 308, Air inlet pressure gauge h; 309, Dilution air inlet pressure gauge; 401, Monodisperse particle atomizer a; 402, Monodisperse particle atomizer b; 403, Monodisperse particle atomizer c; 404, Monodisperse particle atomizer d; 405, Monodisperse particle atomizer e; 406, Monodisperse particle atomizer f; 407, Monodisperse particle atomizer g; 408, Monodisperse particle atomizer h; 501, Buffer mixing chamber; 601, Inlet multi-channel splitter a; 602, Inlet multi-channel splitter b; 603, Monodisperse multi-channel outlet a; 604, Monodisperse multi-channel outlet b; 701, Housing. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3 This utility model provides a technical solution: an 8-channel particle generator, including a housing 701. A buffer mixing chamber 501 is installed on the housing 701 to receive particle streams from multiple channels, eliminating concentration fluctuations caused by differences in flow rates between channels. Through mixing, the output particle concentration is homogenized, improving the accuracy of downstream detection instruments. Furthermore, an air inlet multi-channel distributor assembly is installed on the housing 701 to prevent pressure fluctuations caused by multiple channels sharing the same air source, ensuring uniform flow distribution. A first air inlet rotary switch component and a second air inlet rotary switch component are respectively provided on both sides of the housing 701. Specifically, the first and second air inlet rotary switches control the on / off state of the air paths in each channel. The first and second air inlet rotary switches are connected by connecting pipes. A first air inlet flow regulating valve component and a second air inlet flow regulating valve component are respectively provided on both sides of the housing 701. The first and second inlet flow regulating valves simultaneously and precisely control the gas flow rates of multiple channels, ensuring stable gas supply to each atomizer. A first inlet pressure gauge and a second inlet pressure gauge assembly are respectively installed on both sides of the housing 701. These pressure gauges monitor the gas pressure in multiple channels, ensuring consistent operating pressure across the atomizers. Additionally, a first and second monodisperse particle atomizer assembly are respectively installed on both sides of the housing 701 to atomize the liquid particle solution into uniform monodisperse aerosol particles. The housing 701 also includes monodisperse multi-pipe outlet assemblies on both sides, which collect and output the atomized particle stream. These monodisperse multi-pipe outlet assemblies are connected to the buffer mixing chamber 501, achieving final integrated output of the particle stream.

[0019] Specifically, in this particle generator, the multi-channel inlet splitter assembly is connected to the first inlet rotary switch, the first inlet flow regulating valve, the first inlet pressure gauge, the first monodisperse particle atomizer assembly, and the monodisperse multi-channel outlet assembly. Simultaneously, the multi-channel inlet splitter assembly is connected to the second inlet rotary switch, the second inlet flow regulating valve, the second inlet pressure gauge, the second monodisperse particle atomizer assembly, and the monodisperse multi-channel outlet assembly. This avoids cross-contamination caused by traditional standard particle generators sharing the same generation channel, improving the counting accuracy and effectiveness of the downstream detection instruments in this application's generator. Through hardware isolation and hierarchical control, this generator overcomes the cross-contamination problem of traditional single-channel particle generators, providing a dedicated tool for high-precision calibration of dust particle counters.

[0020] In the embodiments provided by this utility model, the intake multi-pipe splitter assembly includes an intake multi-pipe splitter a601 and an intake multi-pipe splitter b602. The first intake rotary switch component is connected to the intake multi-pipe splitter a, and the second intake rotary switch component is connected to the intake multi-pipe splitter b through connecting pipes. More specifically, the single-dispersion multi-pipe outlet assembly includes a single-dispersion multi-pipe outlet a603 and a single-dispersion multi-pipe outlet b604. The first intake rotary switch component, the first intake flow regulating valve component, the first intake pressure gauge component, the intake multi-pipe splitter a601, and the single-dispersion multi-pipe outlet a603 are interconnected.

[0021] In the embodiments provided by this utility model, the housing 701 is further provided with a dilution port flow regulating valve 209 and a dilution inlet pressure gauge 309, and the buffer mixing chamber 501 is connected to the dilution inlet pressure gauge 309. The dilution port flow regulating valve 209 can independently control the flow rate of the dilution gas to adjust the particle output concentration. The dilution inlet pressure gauge 309 is used to monitor the pressure status of the dilution gas path and assist in flow regulation.

[0022] In the embodiments provided by this utility model, the first air inlet knob switch component includes air inlet knob switch a101, air inlet knob switch b102, air inlet knob switch c103, and air inlet knob switch d104; the second air inlet knob switch component includes air inlet knob switch e105, air inlet knob switch f106, air inlet knob switch g107, and air inlet knob switch h108.

[0023] In the embodiments provided by this utility model, the first inlet flow regulating valve component includes inlet flow regulating valve a201, inlet flow regulating valve b202, inlet flow regulating valve c203, and inlet flow regulating valve d204; the second inlet flow regulating valve component includes inlet flow regulating valve e205, inlet flow regulating valve f206, inlet flow regulating valve g207, and inlet flow regulating valve h208.

[0024] In the embodiments provided by this utility model, the first air inlet pressure gauge component includes air inlet pressure gauge a301, air inlet pressure gauge b302, air inlet pressure gauge c303, and air inlet pressure gauge d304; the second air inlet pressure gauge component includes air inlet pressure gauge e305, air inlet pressure gauge f306, air inlet pressure gauge g307, and air inlet pressure gauge h308.

[0025] In the embodiments provided by this utility model, the first monodisperse particle atomizer assembly includes monodisperse particle atomizer a401, monodisperse particle atomizer b402, monodisperse particle atomizer c403c, and monodisperse particle atomizer d404; the second monodisperse particle atomizer assembly includes monodisperse particle atomizer e405, monodisperse particle atomizer f406, monodisperse particle atomizer g407, and monodisperse particle atomizer h408.

[0026] Working principle: When using monodisperse particles in the monodisperse particle atomizer A401, one stream of clean air enters the inlet rotary switch A101, simultaneously opening it. The inlet flow control valve A201 regulates the flow rate, controlling the number of particles produced by the monodisperse particle atomizer A401. Simultaneously, the inlet pressure gauge A301 displays the pressure value. The monodisperse particle atomizer A401 produces a mist-like particle that enters the monodisperse multi-pipe outlet A603, then flows into the buffer mixing chamber 501. Another stream of clean air enters the dilution inlet flow control valve 209, then the dilution inlet pressure gauge 309 displays the pressure value, before entering the buffer mixing chamber 501. After mixing, a certain number of standard particles are formed. Finally, the buffer mixing chamber 501 is connected to the standard dust particle counter and the dust particle counter being tested for calibration.

[0027] Specifically, when using other channels, such as using monodisperse particles from the monodisperse particle atomizer e405, one channel of clean air enters the inlet knob switch e105. Simultaneously, the inlet knob switch e105 is turned on, and the inlet flow regulating valve e205 is activated. Adjusting the flow rate of the inlet flow regulating valve e205 controls the number of particles produced by the monodisperse particle atomizer e405. At the same time, the inlet pressure gauge e305 displays the pressure value. The monodisperse particle atomizer e405 produces mist particles, which enter the monodisperse multi-pipe outlet b604 and then the buffer mixing chamber 501. Another channel of clean air enters the dilution inlet flow regulating valve 209, then enters the dilution inlet pressure gauge 309, which displays the pressure value, and then enters the buffer mixing chamber 501. After mixing, a certain number of standard particles are formed. Finally, the buffer mixing chamber 501 is connected to the standard dust particle counter and the dust particle counter being tested for calibration.

[0028] The working principle of other embodiments of this utility model is the same, and will not be described in detail here.

[0029] It should be noted that all electrical equipment involved in this application can be powered by batteries or external power sources.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] 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. An 8-channel particle generating device comprising a housing (701), characterized in that: A buffer mixing chamber (501) is installed on the housing (701), and an intake multi-pipe splitter assembly is installed on the housing (701). A first intake knob switch component and a second intake knob switch component are respectively provided on both sides of the housing (701). The first intake knob switch component and the second intake knob switch component are connected to each other through connecting pipes. The housing (701) is provided with a first air inlet flow regulating valve component and a second air inlet flow regulating valve component on both sides, and a first air inlet pressure gauge component and a second air inlet pressure gauge assembly on both sides, and a first monodisperse particle atomizer assembly and a second monodisperse particle atomizer assembly on both sides. It also includes a single-dispersed multi-pipe outlet assembly disposed on both sides of the housing (701), which is connected to the buffer mixing chamber (501).

2. An 8-channel particle generator as claimed in claim 1, characterized in that: The intake multi-pipe splitter assembly includes intake multi-pipe splitter a (601) and intake multi-pipe splitter b (602). The first intake port knob switch component is connected to the intake multi-pipe splitter a, and the second intake port knob switch component is connected to the intake multi-pipe splitter b through connecting pipes.

3. An 8-channel particle generator as claimed in claim 2, characterized in that: The single-dispersed multi-pipe outlet assembly includes a single-dispersed multi-pipe outlet a (603) and a single-dispersed multi-pipe outlet b (604), and the first air inlet knob switch component, the first air inlet flow regulating valve component, the first air inlet pressure gauge component, the air inlet multi-pipe splitter a (601) and the single-dispersed multi-pipe outlet a (603) are connected in series.

4. An 8-channel particle generator as claimed in claim 3, characterized in that: The housing (701) is also provided with a dilution port flow regulating valve (209) and a dilution inlet pressure gauge (309), and the buffer mixing chamber (501) is connected to the inlet pressure gauge.

5. An 8-channel particle generator as claimed in claim 3, characterized in that: The first air inlet rotary switch component includes air inlet rotary switch a (101), air inlet rotary switch b (102), air inlet rotary switch c (103), and air inlet rotary switch d (104). The second air inlet rotary switch component includes air inlet rotary switch e (105), air inlet rotary switch f (106), air inlet rotary switch g (107), and air inlet rotary switch h (108).

6. An 8-channel particle generator as claimed in claim 3, characterized in that: The first inlet flow regulating valve component includes inlet flow regulating valve a (201), inlet flow regulating valve b (202), inlet flow regulating valve c (203), and inlet flow regulating valve d (204). The second inlet flow regulating valve component includes inlet flow regulating valve e (205), inlet flow regulating valve f (206), inlet flow regulating valve g (207), and inlet flow regulating valve h (208).

7. An 8-channel particle generator as claimed in claim 3, characterized in that: The first inlet pressure gauge component includes inlet pressure gauge a (301), inlet pressure gauge b (302), inlet pressure gauge c (303), and inlet pressure gauge d (304). The second inlet pressure gauge component includes inlet pressure gauge e (305), inlet pressure gauge f (306), inlet pressure gauge g (307), and inlet pressure gauge h (308).

8. An 8-channel particle generator as defined in claim 3, wherein: The first monodisperse particle atomizer assembly includes monodisperse particle atomizer a (401), monodisperse particle atomizer b (402), monodisperse particle atomizer c (403c), and monodisperse particle atomizer d (404). The second monodisperse particle atomizer assembly includes monodisperse particle atomizer e (405), monodisperse particle atomizer f (406), monodisperse particle atomizer g (407), and monodisperse particle atomizer h (408).

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