Clean laboratory environment monitoring device

Abstract

The utility model discloses a clean laboratory environment monitoring devices relates to the technical field of environmental monitoring, and the utility model discloses an online particle counter and lifting assembly, and the online particle counter sets up on lifting assembly, and the online particle counter includes main part, vacuum pump, optical chamber, temperature and humidity sensor and signal amplifier, through sprocket rotation, and sprocket drives chain movement, and chain moves through the connecting block and drives the mobile seat to move, and the mobile seat drives the online particle counter to move, and the height of online particle counter is adjusted, so can avoid the device fixed installation and cannot monitor the situation of different height, thereby reach the purpose of improving accuracy, through the filter of the air inlet filter of branch air pipe, and the clean air is spouted into the detection cavity of optical chamber from the air pipe, and the clean air of high -speed flow carries out the dust of the detection cavity of optical chamber and sticks, so can avoid the dust of optical chamber and stick and influence monitoring accuracy, thereby reach the purpose of convenient cleaning.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, specifically a clean laboratory environmental monitoring device. Background Technology

[0002] Environmental monitoring in clean laboratories is a crucial step in ensuring that the experimental environment meets specific cleanliness standards, guarantees the reliability of experimental data, and protects personnel safety. Environmental monitoring includes particulate matter concentration, microbial contamination, and physical parameters (temperature, humidity, etc.). Particulate matter concentration monitoring typically employs an online particle counter for real-time monitoring.

[0003] Online particle counters are typically fixedly installed on the walls of a laboratory. This only allows for the monitoring of air particles at a fixed location. Since the number of particles in the air varies at different heights, this can lead to inaccurate particulate matter concentrations in the laboratory. Furthermore, after prolonged use, dust can easily accumulate inside the detection chamber of an online particle counter, affecting the accuracy of the device's detection. Utility Model Content

[0004] To address the problem of inaccurate particulate matter concentration in laboratories due to fixed locations, the purpose of this invention is to provide a clean laboratory environment monitoring device.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a clean laboratory environment monitoring device, including an online particle counter and a lifting assembly. The online particle counter is mounted on the lifting assembly. The online particle counter includes a main body, a vacuum pump, an optical chamber, a temperature and humidity sensor, and a signal amplifier. The temperature and humidity sensor and the signal amplifier are mounted on the main body. The vacuum pump and the optical chamber are located inside the main body. A wireless transmission module, a photodetector, and a microprocessor are installed inside the main body. The wireless transmission module is connected to the signal amplifier via a wire. The signal amplifier amplifies the signal from the wireless transmission module. A sampling head is installed at the top of the main body. An air inlet pipe is fixedly provided at the air inlet end of the vacuum pump. One end of the air inlet pipe is connected to the sampling head. An air outlet pipe is provided at the air outlet end of the vacuum pump. One end of the air outlet pipe is connected to the air inlet of the optical chamber. The lifting assembly... The component includes a base plate, on which a protective cover is fixedly mounted. Symmetrically distributed rotating shafts are rotatably mounted on the base plate. A sprocket is fixedly mounted on the outer side of each rotating shaft, and a chain meshes with the outer side of each sprocket. A movable seat is slidably mounted on the outer side of the protective cover. A connecting block is fixedly mounted on the outer side of the chain, with one end of the connecting block fixedly connected to the inner side of the movable seat. Symmetrically distributed guide rods are fixedly mounted on the outer side of the protective cover. Symmetrically distributed grooves are formed on the inner wall of the movable seat, and these grooves slidably engage with the guide rods. The movable seat can maintain stable movement by engaging with the guide rods through the grooves. A motor is fixedly mounted on the outer side of the protective cover, with the end of the motor's output shaft fixedly connected to one end of the rotating shafts. A guide groove is formed on the outer side of the protective cover, and the connecting block slidably passes through the guide groove. An exhaust pipe is fixedly mounted at the outlet of the optical chamber, with one end of the exhaust pipe penetrating the main body. The movable seat has a U-shaped structure.

[0006] Preferably, the outlet end of the vacuum pump is fixedly provided with a three-way connector, one end of the three-way connector is fixedly provided with a gas distribution pipe, a filter is installed on the main body, one end of the gas distribution pipe is connected to the air inlet of the filter, the outlet of the filter is fixedly provided with a flushing pipe, one end of the flushing pipe is connected to the detection chamber of the optical chamber, one end of the outlet pipe is connected to one end of the three-way connector, and a solenoid valve is provided at the end of the outlet pipe and the gas distribution pipe near the three-way connector. The gas flow in the outlet pipe and the gas distribution pipe can be easily controlled by opening and closing the solenoid valve.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] 1. By rotating the sprocket, the sprocket drives the chain to move, the chain drives the moving seat to move through the connecting block, and the moving seat drives the online particle counter to move. Adjusting the height of the online particle counter can avoid the situation where the device is fixed and cannot monitor different heights, thereby improving accuracy.

[0009] 2. Air enters the filter through the air distribution pipe and is filtered. Clean air is sprayed into the detection chamber of the optical chamber from the air inlet pipe. The high-speed flow of clean air carries away the dust adhering to the detection chamber of the optical chamber. This can prevent dust from adhering to the optical chamber and affecting the monitoring accuracy, thereby achieving the purpose of easy cleaning. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a cross-sectional schematic diagram of the lifting component structure of this utility model.

[0013] Figure 3 This is a schematic cross-sectional view of the online particle counter structure of this utility model.

[0014] Figure 4 This is a schematic diagram of the movable seat structure of this utility model.

[0015] In the diagram: 1. Online particle counter; 101. Main body; 102. Optical chamber; 103. Sampling head; 104. Inlet pipe; 105. T-connector; 106. Outlet pipe; 107. Exhaust pipe; 108. Gas distribution pipe; 109. Filter; 110. Air inlet pipe; 111. Signal amplifier; 112. Temperature and humidity sensor; 113. Vacuum pump; 2. Lifting assembly; 21. Base plate; 22. Protective cover; 23. Moving seat; 24. Rotating shaft; 25. Sprocket; 26. Chain; 27. Connecting block; 28. Motor; 29. ​​Guide groove; 210. Guide rod; 211. Groove. Detailed Implementation

[0016] 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.

[0017] Example: Figures 1-4As shown, this utility model provides a cleanroom environment monitoring device, including an online particle counter 1 and a lifting assembly 2. The online particle counter 1 is mounted on the lifting assembly 2. The online particle counter 1 includes a main body 101, a vacuum pump 113, an optical chamber 102, a temperature and humidity sensor 112, and a signal amplifier 111. The temperature and humidity sensor 112 is used to monitor the temperature and humidity parameters of the cleanroom environment so as to adjust and improve the particle counting accuracy in a timely manner. The temperature and humidity sensor 112 and the signal amplifier 111 are mounted on the main body 101, and the vacuum pump 113 and the optical chamber 102 are mounted inside the main body 101. A wireless transmission module, a photoelectric detector, and a... are also provided inside the main body 101. The microprocessor and wireless transmission module are connected to the signal amplifier 111 via wires. The signal amplifier 111 amplifies the signal from the wireless transmission module. A sampling head 103 is mounted on the top of the main body 101. An air inlet pipe 104 is fixedly provided at the air inlet end of the vacuum pump 113, and one end of the air inlet pipe 104 is connected to the sampling head 103. An air outlet pipe 106 is provided at the air outlet end of the vacuum pump 113, and one end of the air outlet pipe 106 is connected to the air inlet of the optical chamber 102. The lifting assembly 2 includes a base plate 21, on which a protective cover 22 is fixedly provided. Symmetrically distributed rotating shafts 24 are rotatably mounted on the base plate 21. A sprocket 25 is fixedly provided on the outer side of the rotating shaft 24, and the outer side of the sprocket 25 meshes with... The protective cover 22 has a chain 26 and a movable seat 23 slidably mounted on its outer side. A connecting block 27 is fixedly mounted on the outer side of the chain 26, with one end of the connecting block 27 fixedly connected to the inner side of the movable seat 23. A sprocket 25 is driven to rotate via a rotating shaft 24, which in turn drives the chain 26 to move. The chain 26, through the connecting block 27, drives the movable seat 23 to move, which in turn drives the online particle counter 1 to move. This allows for adjustment of the height of the online particle counter 1. Symmetrically distributed guide rods 210 are fixedly mounted on the outer side of the protective cover 22. Symmetrically distributed grooves 211 are formed on the inner wall of the movable seat 23. The grooves 211 are slidably engaged with the guide rods 210, and the movable seat 23 moves through the grooves 211. The guide rod 210 can be locked to maintain stable movement. A motor 28 is fixedly installed on the outside of the protective cover 22. The end of the output shaft of the motor 28 is fixedly connected to one end of the rotating shaft 24. The motor 28 can provide power for the rotation of the rotating shaft 24. A guide groove 29 is opened on the outside of the protective cover 22. The connecting block 27 slides through the guide groove 29. The guide groove 29 can keep the connecting block 27 moving stably. An exhaust pipe 107 is fixedly installed at the outlet of the optical chamber 102. One end of the exhaust pipe 107 passes through the main body 101. The exhaust pipe 107 can easily discharge the air after detection. The moving seat 23 has a U-shaped structure, which can facilitate the stable movement of the moving seat 23 on the protective cover 22.

[0018] A three-way connector 105 is fixedly provided at the outlet end of the vacuum pump 113. A gas distribution pipe 108 is fixedly provided at one end of the three-way connector 105. A filter 109 is installed on the main body 101. One end of the gas distribution pipe 108 is connected to the air inlet of the filter 109. An air flushing pipe 110 is fixedly provided at the outlet of the filter 109. One end of the air flushing pipe 110 is connected to the detection chamber of the optical chamber 102. Air enters the filter 109 through the gas distribution pipe 108 for filtration. Clean air is sprayed into the detection chamber of the optical chamber 102 from the air flushing pipe 110. The high-speed flow of clean air carries away the dust adhering to the detection chamber of the optical chamber 102, which facilitates the cleaning of dust. One end of the outlet pipe 106 is connected to one end of the three-way connector 105. Solenoid valves are provided at the ends of the outlet pipe 106 and the gas distribution pipe 108 near the three-way connector 105. The flow of gas in the outlet pipe 106 and the gas distribution pipe 108 can be easily controlled by opening and closing the solenoid valves.

[0019] Working principle: First, the base plate 21 is installed on the laboratory wall with bolts. When environmental monitoring is performed, the vacuum pump 113 is started, and the vacuum pump 113 starts working. The air inlet of the vacuum pump 113 generates suction, which causes the sampling head 103 to draw in the laboratory air sample and enter the air inlet pipe 104. At this time, the solenoid valve of the air distribution pipe 108 is closed and the solenoid valve of the air outlet pipe 106 is opened. The air enters the air outlet pipe 106 through the three-way connector 105 and then enters the detection chamber of the optical chamber 102. When the particles in the air pass through the detection chamber of the optical chamber 102 with the airflow, the particles block or scatter the incident light beam, generating a scattered light signal proportional to the particle size. The scattered light signal is converted into an electrical pulse signal by the photodetector and transmitted to the microprocessor. The microprocessor analyzes and processes the data and transmits the data to the back-end terminal through the wireless transmission module. At the same time, the detected air is discharged through the exhaust pipe 107. In this way, the particles in the laboratory air can be counted.

[0020] When it is necessary to monitor air at different heights, the motor 28 is started, causing the motor 28 to start working. The end of the output shaft of the motor 28 drives the rotating shaft 24 to rotate, the rotating shaft 24 drives the sprocket 25 to rotate, the sprocket 25 drives the chain 26 to move, the chain 26 drives the connecting block 27 to move, the connecting block 27 drives the moving seat 23 to move, and the moving seat 23 drives the online particle counter 1 to move. In this way, the height of the online particle counter 1 can be adjusted, thereby monitoring air at different heights.

[0021] When dust needs to be blown out of the detection chamber of optical chamber 102, the solenoid valve of the air distribution pipe 108 is opened and the solenoid valve of the air outlet pipe 106 is closed. Then, the vacuum pump 113 is started, the sampling head 103 draws in air and enters the air inlet pipe 104, and the air then enters the air distribution pipe 108 through the three-way connector 105. The air then enters the filter 109 through the air distribution pipe 108, so that the filter 109 filters the air. Then, the clean air enters the air flushing pipe 110 and is sprayed into the detection chamber of optical chamber 102 from the air flushing pipe 110. The high-speed flow of clean air carries away the dust adhering to the detection chamber of optical chamber 102 and discharges it from the exhaust pipe 107. This can prevent dust from adhering to optical chamber 102 and affecting the monitoring accuracy.

[0022] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0023] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A clean laboratory environment monitoring device comprising an online particle counter (1) and a lifting assembly (2), characterized in that: The online particle counter (1) is mounted on the lifting assembly (2). The online particle counter (1) includes a main body (101), a vacuum pump (113), an optical chamber (102), a temperature and humidity sensor (112), and a signal amplifier (111). The temperature and humidity sensor (112) and the signal amplifier (111) are mounted on the main body (101). The vacuum pump (113) and the optical chamber (102) are mounted inside the main body (101). A sampling head (103) is mounted on the top of the main body (101). An air inlet pipe (104) is fixedly provided at the air inlet end of the vacuum pump (113). One end of the air inlet pipe (104) is connected to the sampling head (103). An air outlet pipe (106) is provided at the air outlet end of the vacuum pump (113). One end of the air outlet pipe (106) is connected to the air inlet of the optical chamber (102). The lifting assembly (2) includes a base plate (21), a protective cover (22) is fixedly provided on the base plate (21), symmetrically distributed rotating shafts (24) are rotatably installed on the base plate (21), a sprocket (25) is fixedly provided on the outer side of the rotating shaft (24), a chain (26) is engaged on the outer side of the sprocket (25), a movable seat (23) is slidably provided on the outer side of the protective cover (22), a connecting block (27) is fixedly provided on the outer side of the chain (26), and one end of the connecting block (27) is fixedly connected to the inner side of the movable seat (23).

2. A clean laboratory environment monitoring device as claimed in claim 1, wherein, The vacuum pump (113) has a fixed three-way connector (105) at its outlet end. One end of the three-way connector (105) is fixedly provided with a gas distribution pipe (108). A filter (109) is installed on the main body (101). One end of the gas distribution pipe (108) is connected to the air inlet of the filter (109). The air outlet of the filter (109) is fixedly provided with a flushing pipe (110). One end of the flushing pipe (110) is connected to the detection chamber of the optical chamber (102).

3. A clean laboratory environment monitoring device as claimed in claim 1, wherein, The outer side of the protective cover (22) is fixed with symmetrically distributed guide rods (210), and the inner wall of the movable seat (23) is provided with symmetrically distributed grooves (211), which are slidably engaged on the guide rods (210).

4. A clean room environment monitoring device as claimed in claim 2, wherein, One end of the air outlet pipe (106) is connected to one end of the three-way connector (105).

5. A clean room environment monitoring device as defined in claim 1, wherein, A motor (28) is fixedly installed on the outside of the protective cover (22), and the end of the output shaft of the motor (28) is fixedly connected to one end of the rotating shaft (24).

6. A clean room environment monitoring device as in claim 1, wherein, The protective cover (22) has a guide groove (29) on its outer side, and the connecting block (27) slides through the guide groove (29).

7. A clean room environment monitoring device as in claim 1, wherein, The outlet of the optical chamber (102) is fixedly provided with an exhaust pipe (107), one end of which penetrates the main body (101).

8. A clean room environment monitoring device as in claim 1, wherein, The movable seat (23) has a U-shaped structure.

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