Laser dust particle counter

Abstract

The utility model relates to the technical field of laser dust particle counters, in particular to a laser dust particle counter. The laser dust particle counter comprises a laser dust particle counter body, the lower end of the laser dust particle counter body is provided with a fixing assembly, the back of the laser dust particle counter body is provided with a quick release assembly and a detection connecting pipe, the back of the laser dust particle counter body is fixedly connected with a sampling port, and the sampling port is fixedly connected with the laser dust particle counter body. The detection connecting pipe is provided with a sampling port, the sampling port is provided with an arc surface, the quick release assembly comprises a circular bolt which is inserted into the arc surface of the sampling port in a sliding manner, the arc surface of the sampling port is connected with a connector and an operation ring in a sliding manner, and the connector is fixed with the detection connecting pipe. The circular bolt is pulled by the pull rope, so that the circular bolt is separated from the connector, the detection connecting pipe is pulled to be separated from the sampling port, and the effect of quickly disassembling the detection connecting pipe as much as possible is achieved.

Description

Technical Field

[0001] This utility model relates to the field of laser dust particle counter technology, and in particular to laser dust particle counters. Background Technology

[0002] A laser dust particle counter is an instrument used to measure the number and size distribution of dust particles per unit volume in a clean environment. Its basic principle is that the detection laser of the optical sensor is scattered by dust particles and received by the photosensitive element to generate a pulse signal. This pulse signal is output and amplified, and then digital signal processing is performed. By comparing it with a standard particle signal, the comparison result is expressed with different parameters.

[0003] In their daily work, the inventors discovered that when using a laser dust particle counter, the sampling port needs to be connected to the sampling probe via a detection connecting tube so that the laser dust particle counter can measure clean environments. However, most detection connecting tubes are fixed to the sampling port of the laser dust particle counter with clamps. After each measurement, the clamps need to be removed to separate the detection connecting tube from the sampling port, and then the sampling port needs to be cleaned. This can make disassembling the detection connecting tube very cumbersome. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in practical use, laser dust particle counters need to connect the sampling port and the sampling probe through a detection connecting tube to measure clean environments. However, most detection connecting tubes are fixed to the sampling port of the laser dust particle counter with clamps. After each test, the clamps need to be removed to separate the detection connecting tube and the sampling port, and then the sampling port needs to be cleaned. This can lead to the problem that disassembling the detection connecting tube is very cumbersome. Therefore, the proposed laser dust particle counter is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a laser dust particle counter, comprising a laser dust particle counter body, a fixing component at the lower end of the laser dust particle counter body, a quick-release component and a detection connecting tube at the back of the laser dust particle counter body, a sampling port fixedly connected to the back of the laser dust particle counter body, the quick-release component comprising a circular pin that slides into the arc surface of the sampling port, a connector and an operating ring that slide through the arc surface of the sampling port, the connector and the detection connecting tube being fixed, the circular pin being inserted into the connector, and a pull rope fixedly connected between the operating ring and the circular pin, the pull rope passing through the sampling port.

[0006] The effect achieved by the above components is as follows: by setting up quick-release components, when it is necessary to quickly disassemble the detection connecting tube from the sampling port, the operating ring is moved backward, so that the circular pin is pulled by the pull rope, so that the circular pin and the connector are separated, thereby pulling the detection connecting tube apart from the sampling port, thus achieving the effect of quickly disassembling the detection connecting tube as much as possible.

[0007] Preferably, a first spring is fixedly connected to the lower end of the circular pin, and the other end of the first spring is fixed to the sampling port.

[0008] The effect achieved by the above components is to reset the circular pin by setting the first spring.

[0009] Preferably, a second spring is fixedly connected to the left end of the operating ring, and the other end of the second spring is fixed to the laser dust particle counter body.

[0010] The effect achieved by the above-mentioned components is to reset the operating ring by setting a second spring.

[0011] Preferably, one end of the connector has a sliding surface that is adapted to a circular pin.

[0012] The effect achieved by the above components is that by setting a sliding surface, the sliding surface contacts the circular pin, causing the circular pin to be pressed down, thereby assisting the circular pin to be inserted into the connector.

[0013] Preferably, the fixing component includes a mounting block fixedly connected to the lower end of the laser dust particle counter body, and a suction cup is fixedly connected to the lower end of the mounting block.

[0014] The effect achieved by the above components is as follows: when the laser dust particle counter is moved by the trolley, the laser dust particle counter body is placed on the trolley, so that the suction cup contacts the metal plate of the trolley, the air in the suction cup is discharged, and it is firmly adsorbed onto the metal plate, thereby fixing the laser dust particle counter body.

[0015] Preferably, an operating tube is fixedly connected to the left end of the mounting block, a piston is provided on the inner wall of the operating tube, and a lead screw is fixedly connected to the left end of the piston.

[0016] The effect achieved by the above components is as follows: by pulling the mechanism, the lead screw in the operating tube moves to the left, causing the piston to move to the left, which further sucks away the air from the suction cup, thus allowing the suction cup to adhere better.

[0017] Preferably, the arc surface of the operating tube is rotatably connected to a rotating cover, and the rotating cover is threadedly connected to the lead screw.

[0018] The effect achieved by the above components is that rotating the rotating cover causes the lead screw inside the operating tube to move to the left under the limiting mechanism.

[0019] Preferably, the lead screw has a groove on its arc surface, and a limiting piece is slidably connected to the inner wall of the groove, the limiting piece being fixed to the operating tube.

[0020] The effect achieved by the above components is to limit the lead screw by setting the slide groove and the limiting piece.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] In this invention, by setting a quick-release component, when it is necessary to quickly disassemble the detection connecting tube from the sampling port, the operating ring is moved backward, so that the circular pin is pulled by the pull rope, causing the circular pin to separate from the connector, thereby pulling the detection connecting tube away from the sampling port. This achieves the effect of quickly disassembling the detection connecting tube as much as possible. This solves the problem that laser dust particle counters need to connect the sampling port and the sampling probe through the detection connecting tube to use in order to measure clean environments. However, most detection connecting tubes are fixed to the sampling port of the laser dust particle counter by clamps. After each test, the clamps need to be removed to separate the detection connecting tube from the sampling port, and then the sampling port needs to be cleaned, which may lead to a very cumbersome disassembly of the detection connecting tube. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0025] Figure 3 This is a three-dimensional structural schematic diagram of the cross-section of the quick-release component of this utility model;

[0026] Figure 4 This is a three-dimensional structural schematic diagram of the cross-section of the fixing component of this utility model;

[0027] Figure 5 This is a schematic diagram of the dust counting process of this utility model.

[0028] Legend: 1. Laser dust particle counter body; 2. Quick-release assembly; 3. Fixing assembly; 4. Detection connecting tube; 5. Sampling port; 21. Circular pin; 22. Operating ring; 23. Pull rope; 24. First spring; 25. Second spring; 26. Sliding surface; 27. Connector; 31. Mounting block; 32. Suction cup; 33. Operating tube; 34. Lead screw; 35. Piston; 36. Rotating cover; 37. Slide groove; 38. Limiting plate. Detailed Implementation

[0029] Reference Figure 1 and Figure 2As shown, this utility model provides a technical solution: a laser dust particle counter includes a laser dust particle counter body 1, a fixing component 3 is provided at the lower end of the laser dust particle counter body 1, a quick-release component 2 and a detection connecting tube 4 are provided on the back of the laser dust particle counter body 1, and a sampling port 5 is fixedly connected to the back of the laser dust particle counter body 1.

[0030] The following section will explain the specific settings and functions of quick-release component 2 and fixing component 3.

[0031] Reference Figure 3 As shown in this embodiment: the quick-release component 2 includes a circular pin 21 that slides onto the arc surface of the sampling port 5. A connector 27 and an operating ring 22 are slidably connected to the arc surface of the sampling port 5. The connector 27 is fixed to the detection connecting tube 4. The circular pin 21 is inserted into the connector 27. A pull rope 23 is fixedly connected between the operating ring 22 and the circular pin 21, passing through the sampling port 5. By setting the quick-release component 2, when it is necessary to quickly remove the detection connecting tube 4 from the sampling port 5, the operating ring 22 is moved backward, causing the circular pin 21 to be pulled by the pull rope 23, thus separating the circular pin 21 from the connector 27, thereby pulling the detection connecting tube 4 away from the sampling port 5, thereby maximizing the separation of the sampling port 5. The function of the quick disassembly detection connecting tube 4 is as follows: the lower end of the circular pin 21 is fixedly connected to the first spring 24, and the other end of the first spring 24 is fixed to the sampling port 5. By setting the first spring 24, the circular pin 21 is reset. The left end of the operating ring 22 is fixedly connected to the second spring 25, and the other end of the second spring 25 is fixed to the laser dust particle counter body 1. By setting the second spring 25, the operating ring 22 is reset. One end of the connector 27 has a sliding surface 26, which is adapted to the circular pin 21. By setting the sliding surface 26, the sliding surface 26 contacts the circular pin 21, so that the circular pin 21 is pressed down, thereby assisting the circular pin 21 to be inserted into the connector 27.

[0032] Reference Figure 4As shown, in this embodiment: the fixing component 3 includes a mounting block 31 fixedly connected to the lower end of the laser dust particle counter body 1. A suction cup 32 is fixedly connected to the lower end of the mounting block 31. When the laser dust particle counter is moved by the trolley, the laser dust particle counter body 1 is placed on the trolley, so that the suction cup 32 contacts the metal plate of the trolley, expelling the air in the suction cup 32, so that it is firmly adsorbed onto the metal plate, thereby fixing the laser dust particle counter body 1. An operating tube 33 is fixedly connected to the left end of the mounting block 31. A piston 35 is provided on the inner wall of the operating tube 33. A lead screw 3 is fixedly connected to the left end of the piston 35. 4. By pulling the mechanism, the lead screw 34 in the operating tube 33 moves to the left, causing the piston 35 to move to the left, further sucking away the air from the suction cup 32, thus allowing the suction cup 32 to better adhere. The arc surface of the operating tube 33 is rotatably connected to a rotating cover 36, which is threadedly connected to the lead screw 34. Rotating the rotating cover 36 causes the lead screw 34 in the operating tube 33 to move to the left under the limitation of the limiting mechanism. The arc surface of the lead screw 34 is provided with a sliding groove 37, and the inner wall of the sliding groove 37 is slidably connected to a limiting piece 38. The limiting piece 38 is fixed to the operating tube 33. By setting the sliding groove 37 and the limiting piece 38, the lead screw 34 is limited.

[0033] Working principle:

[0034] When using the laser dust particle counter body 1, the sampling port 5 is fixed to the sampling probe via the detection connecting tube 4. The laser dust particle counter body 1 is powered on and started, so that the detection laser of the internal optical sensor is scattered by dust particles and received by the photosensitive element to generate a pulse signal. This pulse signal is output and amplified, and then digital signal processing is performed. By comparing it with the standard particle signal, the comparison result is expressed with different parameters. When it is necessary to quickly disassemble the detection connecting tube 4 from the sampling port 5, the operating ring 22 is moved backward, so that the circular pin 21 is pulled by the pull rope 23, causing the circular pin 21 to separate from the connector 27, thereby pulling the detection connecting tube 4 away from the sampling port 5, thus achieving the effect of quickly disassembling the detection connecting tube 4. By setting the first spring 24, the circular pin 21 is separated from the connector 27. The pin 21 is reset. The operating ring 22 is reset by setting the second spring 25. The sliding surface 26 is set and contacts the circular pin 21, so that the circular pin 21 is pressed down, thereby assisting the circular pin 21 to be inserted into the connector 27. When the laser dust particle counter is moved by the trolley, the laser dust particle counter body 1 is placed on the trolley, so that the suction cup 32 contacts the iron plate of the trolley, and the air in the suction cup 32 is discharged, so that it is firmly adsorbed on the iron plate, thereby fixing the laser dust particle counter body 1. Rotating the rotating cover 36, the lead screw 34 is limited by setting the sliding groove 37 and the limiting piece 38, so that the lead screw 34 in the operating tube 33 moves to the left, so that the piston 35 moves to the left, so that the air in the suction cup 32 is further sucked away, so that the suction cup 32 adsorbs better.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A laser dust particle counter, comprising a laser dust particle counter body (1), characterized in that: The lower end of the laser dust particle counter body (1) is provided with a fixing component (3), the back of the laser dust particle counter body (1) is provided with a quick-release component (2) and a detection connecting tube (4), the back of the laser dust particle counter body (1) is fixedly connected with a sampling port (5), the quick-release component (2) includes a circular pin (21) that slides into the arc surface of the sampling port (5), the arc surface of the sampling port (5) is slidably connected with a connector (27) and an operating ring (22), the connector (27) and the detection connecting tube (4) are fixed, the circular pin (21) is inserted into the connector (27), and a pull rope (23) is fixedly connected between the operating ring (22) and the circular pin (21), the pull rope (23) passes through the sampling port (5).

2. The laser dust particle counter according to claim 1, characterized in that: The lower end of the circular pin (21) is fixedly connected to a first spring (24), and the other end of the first spring (24) is fixed to the sampling port (5).

3. The laser dust particle counter according to claim 2, characterized in that: The left end of the operating ring (22) is fixedly connected to a second spring (25), and the other end of the second spring (25) is fixed to the laser dust particle counter body (1).

4. The laser dust particle counter according to claim 3, characterized in that: One end of the connector (27) is provided with a sliding surface (26), which is adapted to the circular pin (21).

5. The laser dust particle counter according to claim 4, characterized in that: The fixing component (3) includes a mounting block (31) fixedly connected to the lower end of the laser dust particle counter body (1), and a suction cup (32) is fixedly connected to the lower end of the mounting block (31).

6. The laser dust particle counter according to claim 5, characterized in that: An operating tube (33) is fixedly connected to the left end of the mounting block (31), and a piston (35) is provided on the inner wall of the operating tube (33). A lead screw (34) is fixedly connected to the left end of the piston (35).

7. The laser dust particle counter according to claim 6, characterized in that: The arc surface of the operating tube (33) is rotatably connected to a rotating cover (36), and the rotating cover (36) is threadedly connected to the lead screw (34).

8. The laser dust particle counter according to claim 7, characterized in that: The lead screw (34) has a groove (37) on its arc surface. A limiting piece (38) is slidably connected to the inner wall of the groove (37). The limiting piece (38) is fixed to the operating tube (33).

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