High-flow online particle counter for clean environment

Abstract

The utility model provides a clean-environment large-flow online particle counter, belongs to the technical field of particle counters, and aims to solve the problem that measurement personnel easily forget to reset an instrument due to negligence or unskilled operation, so that the accuracy of a measurement result is influenced. Comprising a particle counter main body, an air sampling port, a sliding compression ring, a driving transmission rack, a positioning mounting shaft and a state prompting rod, the air sampling port is formed in the upper part of the particle counter main body; the sliding compression ring is connected to the upper part of the particle counter main body in a sliding manner; the driving transmission rack is fixedly connected to the outer side of the sliding compression ring; the positioning mounting shaft is rotationally connected to the upper part of the particle counter main body; the state prompting rod is fixedly connected to the outer side of the positioning mounting shaft; according to the utility model, a worker can conveniently judge whether to forget to carry out zero clearing on the on-line particle counter, and the situation that the accuracy of a measurement result is influenced by forgetting to carry out zero clearing is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of particle counter technology, and more specifically, it relates to a high-flow-rate online particle counter for clean environments. Background Technology

[0002] When measuring the size and number of dust particles per unit volume of air in a clean environment, it is usually necessary to use a high-flow-rate online particle counter. Before measurement, the instrument needs to be zeroed through a self-cleaning filter, and then the sampling tube is inserted into the sampling port for sampling and measurement. The high-flow-rate online particle counter can quickly verify the cleanliness level of the cleanroom and print out the relevant test results.

[0003] For example, CN220399390U discloses a real-time online air cleanliness monitoring device, including a control module, a display screen, a temperature and humidity sensor, a differential pressure sensor, a wind speed sensor, an airborne bacteria sampler, an air pump, a high-flow-rate particle counter, an integrated counter, and a low-flow-rate counter; the high-flow-rate particle counter, the integrated counter, the low-flow-rate counter, and the airborne bacteria sampler are respectively connected to the air pump through pipelines; the display screen, temperature and humidity sensor, differential pressure sensor, wind speed sensor, airborne bacteria sampler, air pump, high-flow-rate particle counter, integrated counter, and low-flow-rate counter are all communicatively connected to the control module; this utility model has the feature of enabling real-time monitoring of clean environments.

[0004] Based on the above, in the actual operation of high-flow online particle counters, measurement personnel are prone to forgetting to zero the instrument due to negligence or lack of operational proficiency, which affects the accuracy of the measurement results and requires subsequent remeasurement. This not only increases the workload of the measurement personnel but also affects the measurement progress. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a high-flow-rate online particle counter for clean environments. This solves the problem that during the actual operation of a high-flow-rate online particle counter, measurement personnel may easily forget to zero the instrument due to negligence or lack of operational experience, affecting the accuracy of the measurement results and requiring subsequent remeasurements. This not only increases the workload for measurement personnel but also impacts the measurement progress.

[0006] The purpose and effectiveness of this utility model, a high-flow-rate online particle counter for clean environments, are achieved through the following specific technical means:

[0007] A high-flow-rate online particle counter for clean environments includes a particle counter body, an air sampling port, an indicator structure, a dustproof structure, a sliding pressure ring, an active drive rack, a limiting structure, a positioning mounting shaft, and a status indicator rod. The air sampling port is located on the upper part of the particle counter body. The indicator structure is also located on the upper part of the particle counter body. The dustproof structure is located on the upper part of the particle counter body. The sliding pressure ring is slidably connected to the upper part of the particle counter body. The active drive rack is fixedly connected to the outside of the sliding pressure ring and is slidably connected to the particle counter body. The limiting structure is located on the inner side of the particle counter body. The positioning mounting shaft is rotatably connected to the upper part of the particle counter body. The status indicator rod is fixedly connected to the outside of the positioning mounting shaft, and red and green stickers are affixed to the outside of the status indicator rod.

[0008] Furthermore, the dustproof structure includes a swing mounting base and a glass dustproof baffle; the swing mounting base is rotatably connected to the upper part of the particle counter body, and a rubber pad is provided on the outer side of the swing mounting base's rotating shaft; the glass dustproof baffle is fixedly connected to the middle part of the swing mounting base.

[0009] Furthermore, the prompting structure includes a status observation window and a push-button switch; the status observation window is located on the upper part of the particle counter body; the push-button switch is located on the upper part of the particle counter body.

[0010] Furthermore, the prompting structure also includes an angle limiting baffle and a prompting light; two angle limiting baffles are provided, and both angle limiting baffles are fixedly connected to the upper end face of the particle counter body; the prompting light is fixedly connected to the upper part of the glass dustproof baffle; the push-button switch is connected in series with the control circuit of the prompting light.

[0011] Furthermore, the limiting structure includes a reset elastic element and a driven transmission gear; the sliding pressure ring is elastically connected to the particle counter body through the reset elastic element; the driven transmission gear is rotatably connected to the upper part of the particle counter body, and the driven transmission gear meshes with the active transmission rack.

[0012] Furthermore, the limiting structure also includes a direction limiting ratchet and a direction limiting pawl; the direction limiting ratchet is fixedly connected to the inner side of the driven transmission gear; the direction limiting pawl is hinged to the outer side of the positioning mounting shaft, and the direction limiting ratchet and the direction limiting pawl together form a ratchet transmission mechanism.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention uses an indicator light to attract the attention of measurement personnel, reminding them to observe the status indicator bar. The sticker displayed on the status indicator bar helps staff determine if they have forgotten to zero the online particle counter, avoiding inaccuracies due to forgotten zeroing and eliminating the inconvenience of re-measuring dust particles in clean environments. This reduces the workload of measurement personnel while ensuring measurement progress. A glass dustproof baffle protects the air sampling port from dust falling into it when the online particle counter is not in use, and also prevents the rubber dust cap from being easily lost after removal, improving the effectiveness of the online particle counter. Rubber pads on the outside of the swing mount ensure its stability, preventing it from swinging independently. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram showing the positions of the status observation window and the swing mounting base of this utility model.

[0017] Figure 3 This is a schematic diagram showing the positions of the push-button switch and the angle limiting baffle of this utility model.

[0018] Figure 4 This is a schematic diagram showing the positional relationship between the air sampling port and the sliding pressure ring of this utility model.

[0019] Figure 5 This is a schematic diagram showing the positional relationship between the sliding pressure ring, the active transmission rack, the positioning and mounting shaft, and the status indicator rod of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Particle counter body; 101. Status observation window; 102. Push-button switch; 103. Angle limiting baffle; 104. Swing mounting base; 105. Glass dustproof baffle; 106. Indicator light; 2. Air sampling port; 3. Sliding pressure ring; 301. Reset elastic element; 4. Active transmission rack; 5. Positioning mounting shaft; 501. Driven transmission gear; 502. Direction limiting ratchet; 503. Direction limiting pawl; 6. Status indicator lever. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0023] Example 1:

[0024] As attached Figure 1 To be continued Figure 4 As shown:

[0025] This utility model provides a high-flow-rate online particle counter for clean environments, including a particle counter body 1, an air sampling port 2, a prompting structure, and a dustproof structure; the air sampling port 2 is located on the upper part of the particle counter body 1; the prompting structure is located on the upper part of the particle counter body 1; and the dustproof structure is located on the upper part of the particle counter body 1.

[0026] The dustproof structure includes a swing mounting base 104 and a glass dustproof baffle 105; the swing mounting base 104 is rotatably connected to the upper part of the particle counter body 1, and a rubber pad is provided on the outer side of the rotating shaft of the swing mounting base 104; the glass dustproof baffle 105 is fixedly connected to the middle part of the swing mounting base 104.

[0027] The prompting structure includes a status observation window 101 and a push-button switch 102; the status observation window 101 is located on the upper part of the particle counter body 1; the push-button switch 102 is located on the upper part of the particle counter body 1.

[0028] The prompting structure also includes an angle limiting baffle 103 and a prompt light 106; there are two angle limiting baffles 103, and both angle limiting baffles 103 are fixedly connected to the upper end face of the particle counter body 1; the prompt light 106 is fixedly connected to the upper part of the glass dustproof baffle 105; the control circuit of the push-button switch 102 and the prompt light 106 are connected in series.

[0029] The specific usage and function of this embodiment are as follows: When measuring dust particles in a clean environment, push the swing mounting base 104 to move the swing mounting base 104 and the glass dustproof baffle 105 above the status observation window 101. At this time, the swing mounting base 104 will press the push-button switch 102 to power on the indicator light 106 and attract the attention of the measuring personnel. At this time, the measuring personnel can observe the color of the status indicator rod 6 through the glass dustproof baffle 105 and the status observation window 101, and thus judge the status of the particle counter. The angle limiting baffle 103 can limit the maximum movement angle of the swing mounting base 104.

[0030] Example 2:

[0031] As attached Figure 4 To be continued Figure 5 As shown:

[0032] Based on Embodiment 1, it also includes a sliding pressure ring 3, an active transmission rack 4, a limiting structure, a positioning mounting shaft 5, and a status indicator rod 6; the sliding pressure ring 3 is slidably connected to the upper part of the particle counter body 1; the active transmission rack 4 is fixedly connected to the outside of the sliding pressure ring 3, and the active transmission rack 4 is slidably connected to the particle counter body 1; the limiting structure is set on the inside of the particle counter body 1; the positioning mounting shaft 5 is rotatably connected to the upper part of the particle counter body 1; the status indicator rod 6 is fixedly connected to the outside of the positioning mounting shaft 5, and red and green stickers are pasted on the outside of the status indicator rod 6.

[0033] The limiting structure includes a reset elastic element 301 and a driven transmission gear 501; the sliding pressure ring 3 is elastically connected to the particle counter body 1 through the reset elastic element 301; the driven transmission gear 501 is rotatably connected to the upper part of the particle counter body 1, and the driven transmission gear 501 meshes with the active transmission rack 4.

[0034] The limiting structure also includes a directional limiting ratchet 502 and a directional limiting pawl 503; the directional limiting ratchet 502 is fixedly connected to the inner side of the driven transmission gear 501; the directional limiting pawl 503 is hinged to the outer side of the positioning and mounting shaft 5, and the directional limiting ratchet 502 and the directional limiting pawl 503 together form a ratchet transmission mechanism.

[0035] The specific usage and function of this embodiment: If the online particle counter is not reset, the red sticker on the status indicator 6 will be on top. At this time, the self-cleaning filter needs to be connected to the air sampling port 2 first. The sliding pressure ring 3 is squeezed by the self-cleaning filter, causing the active transmission rack 4 to slide downward. The active transmission rack 4 will push the driven transmission gear 501 and the direction limiting ratchet 502 to rotate. When the direction limiting ratchet 502 rotates, it will push the direction limiting pawl 503, causing the direction limiting pawl 503 to drive the positioning mounting shaft 5 to rotate. The rotation of the positioning mounting shaft 5 will drive the status indicator 6 to rotate. Rotating the indicator rod 6 changes the sticker position. After the online particle counter is zeroed, the self-cleaning filter is removed. At this time, the reset elastic element 301 pushes the sliding pressure ring 3 and the active transmission rack 4 to reset. When the driven transmission gear 501 and the direction limiting ratchet 502 reverse, they will slide outside the direction limiting pawl 503. The positioning mounting shaft 5 and the status indicator rod 6 remain stationary. At this time, the green sticker is on the status indicator rod 6. The sampling tube can be connected to the air sampling port 2 to sample and measure the air. During the installation of the sampling tube, the status indicator rod 6 will flip again to return to the initial state.

[0036] The following points should be noted in this article:

[0037] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0038] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0039] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A clean environment large flow on-line particle counter, comprising a particle counter body (1), an air sampling port (2), a prompt structure, a dustproof structure, a sliding pressure ring (3), a driving rack (4), a limiting structure, a positioning installation shaft (5) and a state prompt rod (6); the air sampling port (2) is opened in the upper part of the particle counter body (1); characterized in that: The prompting structure is located on the upper part of the particle counter body (1); the dustproof structure is located on the upper part of the particle counter body (1); the sliding pressure ring (3) is slidably connected to the upper part of the particle counter body (1); the active transmission rack (4) is fixedly connected to the outer side of the sliding pressure ring (3), and the active transmission rack (4) is slidably connected to the particle counter body (1); the limiting structure is located on the inner side of the particle counter body (1); the positioning mounting shaft (5) is rotatably connected to the upper part of the particle counter body (1); the status indicator rod (6) is fixedly connected to the outer side of the positioning mounting shaft (5), and red and green stickers are pasted on the outer side of the status indicator rod (6).

2. The cleanroom high flow on-line particle counter of claim 1, wherein: The dustproof structure includes a swing mounting base (104) and a glass dustproof baffle (105); the swing mounting base (104) is rotatably connected to the upper part of the particle counter body (1), and a rubber pad is provided on the outer side of the rotating shaft of the swing mounting base (104); the glass dustproof baffle (105) is fixedly connected to the middle part of the swing mounting base (104).

3. The clean environment high-flow-rate online particle counter as described in claim 2, characterized in that: The prompting structure includes a status observation window (101) and a push-button switch (102); the status observation window (101) is located on the upper part of the particle counter body (1); the push-button switch (102) is located on the upper part of the particle counter body (1).

4. The cleanroom high flow on-line particle counter of claim 3 wherein: The prompting structure also includes an angle limiting baffle (103) and a prompting light (106); there are two angle limiting baffles (103), and both angle limiting baffles (103) are fixedly connected to the upper end face of the particle counter body (1); the prompting light (106) is fixedly connected to the upper part of the glass dustproof baffle (105); the push-button switch (102) is connected in series with the control circuit of the prompting light (106).

5. The clean environment high-flow-rate online particle counter as described in claim 1, characterized in that: The limiting structure includes a reset elastic element (301) and a driven transmission gear (501); the sliding pressure ring (3) is elastically connected to the particle counter body (1) through the reset elastic element (301); the driven transmission gear (501) is rotatably connected to the upper part of the particle counter body (1), and the driven transmission gear (501) meshes with the active transmission rack (4).

6. The cleanroom high flow on-line particle counter of claim 5 wherein: The limiting structure also includes a direction limiting ratchet (502) and a direction limiting pawl (503); the direction limiting ratchet (502) is fixedly connected to the inner side of the driven transmission gear (501); the direction limiting pawl (503) is hinged to the outer side of the positioning mounting shaft (5), and the direction limiting ratchet (502) and the direction limiting pawl (503) together form a ratchet transmission mechanism.

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