CN215985632U

CN215985632U - Laser suspended particle counter with pump

Info

Publication number: CN215985632U
Application number: CN202122122049.2U
Authority: CN
Inventors: 吴水田; 夏群艳; 张东昇
Original assignee: Shenzhen Yitian Purifying Technology Co ltd
Current assignee: Shenzhen Yitian Purifying Technology Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-03-08
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses a self-pumping light suspended particle counter, which relates to the field of clean environment particle detection and comprises a photoelectric conversion module, a pump control module, a data communication module, a data storage module, a relay control module, a power supply control module, an output module, an MCU control module and an indication module. The utility model provides a suspended particle counter system which has a function of communicating with a server, uploads detection data in real time, can realize real-time online detection of the detected environmental condition by an instrument, timely responds to abnormal conditions, and reduces potential risks and loss; the direct-current power supply module is used for supplying power in a centralized manner, so that strong and weak current separation can be realized, and the safety level is increased.

Description

Laser suspended particle counter with pump

Technical Field

The utility model relates to the technical field of clean environment particle detection, in particular to a laser suspended particle counter with a pump.

Background

At present, a main stream suspended particle counter in a clean environment sucks tested gas into equipment through a built-in laser sampler, measures the size of particles by measuring the intensity of scattered light by utilizing the physical phenomenon that the particles in the air are scattered under the irradiation of laser, and calculates the volume of the gas passing through the instrument by utilizing a flowmeter to obtain the concentration of suspended particles in the air.

The laser suspended particle counter generally comprises a sampling device, a light source, a measuring cavity, a light detector, a circuit control system and other components; the laser sampler is desk-top or hand-held, and is mostly internally provided with an independent laser sampler, accessories thereof and a high-capacity chargeable pump; a thermal printer and a large-size high-definition touch display screen are arranged; in addition, an adapter is provided to prolong the working time of the instrument, the price is high, the volume is large, and the monitoring and distribution are inconvenient, but in clean environments of electronic industry, food, cosmetics, pharmaceutical workshops, semiconductors, optics or precision machining and the like, an online monitoring instrument for continuously measuring the number and the particle size distribution of suspended particles in unit volume at multiple points is needed, so the utility model provides a self-contained pump laser suspended particle counter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a laser suspended particle counter with a pump so as to solve the problems of high price, large volume and inconvenient monitoring and distribution in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a from area pump laser suspended particle counter, includes photoelectric conversion module, pump control module, data communication module, data storage module, relay control module, power control module, output module, MCU control module, indicating module, photoelectric conversion module connects on pump control module, and pump control module connects on data communication module, and data communication module connects on data storage module, and data storage module connects on relay control module, and relay control module connects on power control module, and power control module connects on output module, and output module connects on MCU control module, and MCU control module connects on indicating module, installs the casing on the indicating module.

Preferably, go up movable mounting on the casing and have casing down, fixed mounting has the pump mounting bracket on the inner wall of casing down, and movable mounting has the pump on the pump mounting bracket, is connected with the laser sampler module on the pump mounting bracket, and fixed mounting has the laser sampler on the laser sampler module, and fixed mounting has the sampling pipe on the laser sampler.

Preferably, the lower shell is provided with a mounting hole, and one end of the sampling tube penetrates through the mounting hole.

Preferably, the upper shell is fixedly provided with a connecting block, and the connecting block is provided with a fixing hole.

Preferably, the pump mounting frame is provided with a connecting hole, the laser sampler module is provided with a matching hole, and the connecting hole is matched with the matching hole.

Preferably, the inner wall of the lower shell is fixedly provided with an L-shaped plate, and both ends of the L-shaped plate are provided with through holes.

The utility model has the beneficial effects that:

the utility model provides a suspended particle counter system which has a function of communicating with a server, uploads detection data in real time, can realize real-time online detection of the detected environmental condition by an instrument, timely responds to abnormal conditions, and reduces potential risks and loss; the direct-current power supply module is used for centralized power supply, so that strong and weak current separation can be realized, the safety level is increased, the service life of the built-in pump is greatly prolonged, the output of various statistical data in production is supported, and the use is more convenient.

In the utility model, the printer, the touch display screen, the chargeable pump, the independent laser sampler and other equipment are eliminated, the whole volume and the weight of the system are reduced, and the enterprise cost is reduced.

Drawings

FIG. 1 is a schematic perspective view of a self-pumped suspended particle counter according to the present invention;

FIG. 2 is a schematic diagram of an internal structure of a self-pumped suspended particle counter according to the present invention;

FIG. 3 is a schematic diagram of a side view of a self-pumped suspended particle counter according to the present invention;

fig. 4 is a schematic flow chart illustrating a usage process of a self-pumping suspended particle counter according to the present invention.

In the figure: 1. a photoelectric conversion module; 2. a pump control module; 3. a data communication module; 4. a data storage module; 5. a relay control module; 6. a power supply control module; 7. an output module; 8. an MCU control module; 9. an indication module; 10. an upper housing; 11. a lower housing; 12. mounting holes; 13. a pump mounting bracket; 14. a pump; 15. a laser sampler module; 16. a laser sampler; 17. connecting holes; 18. a sampling tube; 19. fitting the hole; 20. connecting blocks; 21. a fixing hole; 22. an L-shaped plate; 23. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a self-contained pump laser suspended particle counter comprises a photoelectric conversion module 1, a pump control module 2, a data communication module 3, a data storage module 4, a relay control module 5, a power control module 6, an output module 7, an MCU control module 8 and an indication module 9, wherein the photoelectric conversion module 1 is connected to the pump control module 2, the pump control module 2 is connected to the data communication module 3, the data communication module 3 is connected to the data storage module 4, the data storage module 4 is connected to the relay control module 5, the relay control module 5 is connected to the power control module 6, the power control module 6 is connected to the output module 7, the output module 7 is connected to the MCU control module 8, the MCU control module 8 is connected to the indication module 9, an upper shell 10 is installed on the indication module 9 to identify the number of each particle size, data are read by the data communication module 3 on the MCU control module 8, and are stored, and through output module 7, the host computer walks data acquisition, instructs system running state through operation indicating module 9, according to setting for like power, operation, sampling and acousto-optic warning indication, supports periodic work: the pump can be operated for a period of time, has a rest for a period of time, and then is operated for a rest again, so that the service life of the pump can be prolonged by more than one time.

According to the utility model, the upper shell 10 is movably provided with the lower shell 11, the inner wall of the lower shell 11 is fixedly provided with the pump mounting frame 13, the pump 14 is movably arranged on the pump mounting frame 13, the laser sampler module 15 is connected onto the pump mounting frame 13, the laser sampler 16 is fixedly arranged on the laser sampler module 15, and the sampling pipe 18 is fixedly arranged on the laser sampler 16, so that the modular design is adopted, corresponding parts can be dismounted through the pump mounting frame 13, and sampling is carried out by utilizing the laser sampler 16 and the sampling pipe 18.

In the utility model, the lower shell 11 is provided with a mounting hole 12, and one end of the sampling tube 18 penetrates through the mounting hole 12, so that the sampling tube 18 can go to the outside through the mounting hole 12 on the lower shell 11 to perform sampling operation.

In the utility model, the upper shell 10 is fixedly provided with the connecting block 20, the connecting block 20 is provided with the fixing hole 21, and the upper shell 10 is connected on the lower shell 11 through the fixing hole 21 on the connecting block 20.

In the utility model, the pump mounting frame 13 is provided with a connecting hole 17, the laser sampler module 15 is provided with a matching hole 19, the connecting hole 17 is matched with the matching hole 19, and the pump mounting frame 13 and the laser sampler module 15 are connected with the matching hole 19 through the connecting hole 17.

In the utility model, an L-shaped plate 22 is fixedly arranged on the inner wall of the lower shell 11, through holes 23 are respectively arranged at two ends of the L-shaped plate 22, and the lower shell 11 is matched with bolts through the two through holes 23 on the L-shaped plate 22 to connect the top of the lower shell 11 with the top of the upper shell 10.

The working principle of the utility model is as follows:

the direct current power supply module is a direct current voltage input and a direct current voltage output, the direct current voltage is 24V input, the direct current power supply module is respectively and electrically connected with the sensor module, the data conversion module, the micro control unit module and the input and output module through leads and supplies power to the sensor module, the data conversion module, the micro control unit module and the input and output module to ensure the voltage required by the normal work of each module, wherein, the 24V voltage input TPS5430 provides 5V voltage, the 5V voltage input A0512S-2WR2 module provides +/-12V voltage, the 24V voltage input 78L12G provides 12V voltage for the flow sensor, the 5V voltage input AMS1117 provides 3.3V voltage for the MCU unit, the sensor module comprises a laser suspension particle sensor which carries out classification detection on particles with different particle diameters through the laser suspension particle sensor, the laser suspension particle sensor can select a 2.83L/min preliminary dust particle counter, 12V/24V and 5V working voltage, in order to detect the gas flow, the sensor module also includes a flow sensor, the flow sensor is electrically connected with a data conversion module, the flow sensor can select FS4008 gas flow sensor, the working voltage is 12V, the data conversion module is electrically connected with the sensor module, the data conversion module includes an operational amplifier and a voltage comparator, the operational amplifier can select LF356 operational amplifier, the voltage comparator can select LM311 voltage comparator, the LF356 and LM311 are adopted to convert the data collected by the laser suspended particle counter, the working voltage is +/-12V, the data of the flow sensor is converted by the resistance voltage dividing principle, the data collected by the sensor is converted into the data which can be processed by the micro control unit module, the micro control unit module (MCU for short) is electrically connected with the data conversion module, the micro control unit module adopts MT7688 series processors, the working voltage is 5V, the micro control unit module controls the operation of the whole system, receives and processes the data of the data conversion module, transmits the data to the input and output module, and realizes the communication with the server, the input and output module is electrically connected with the micro control unit module, the server is electrically connected with the input and output module through RS485 or TCP/IP, the input and output module realizes the information interaction between the counter and the server, and can be used as a burning, debugging interface and a screen display interface, the suspended particle counter system also comprises a collecting probe, the collecting probe is connected with the sensor module, the collecting probe is arranged in a funnel-shaped structure, the material of the collecting probe is metal, the conventional collecting probe in the prior art can be selected, for example, the collecting probe with the model of 210-01A, the suspended particle counter system also comprises an operation indication module 9, operation indication module 9 is connected with the direct current power supply module electricity, supplies power to operation indication module 9 through the direct current power supply module, and operation indication module 9 is connected with little the control unit module electricity, instructs system running state through operation indication module 9, like power, operation, sampling and acousto-optic warning indication etc. the air current flow direction of this suspended particle counter is: the device comprises an acquisition probe, an air inlet, a sensor (a laser suspended particle sensor, a flow sensor) and an air outlet, wherein the air outlet is connected with an adjusting valve and a laser sampler, and the acquisition probe is connected with the air inlet through a hose to provide an acquisition channel; the gas outlet is connected to the laser sampler through the regulating valve to obtain a specific gas flow rate, such as 2.83L/min, the suspended particle counter works according to a set program after being electrified and started, and the laser suspended particle sensor converts particles with different particle sizes in the passing gas into corresponding pulse voltage waveform quantity; meanwhile, the flow sensor detects the volume of gas flowing through, the collected data are converted into data which can be processed by the MCU through the conversion module and are transmitted to the MCU, the MCU processes the data to obtain the number of particles with different particle diameters and uploads the number of the particles to an external server through the input and output module, and simultaneously, the related running state is output to the running indicating module 9, the input and output module can also be used for a burning interface and a debugging interface of a program, the external server can also control the running of a counter through the input and output module, the running indicating module 9 comprises a plurality of paths of LED indicating lamps and a buzzer, wherein the LED indicating lamps comprise a power supply indicating lamp, a running indicating lamp, a sampling indicating lamp and a warning indicating lamp, the LED indicating lamps are powered by 3.3V, the buzzer is powered by 5V, and the working state of the running indicating module 9 is as follows: when the power supply is normal, the power indicator lamp is normally on, and the indicator lamp is turned off after the power failure; when the instrument runs, the running indicator lamp is always on; when the sampling flow is normal, the sampling indicator lamp is normally on; when the detected data is abnormal, the warning indicator lamp flickers, and the buzzer can give an alarm.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a from taking pump light suspended particle counter, includes photoelectric conversion module (1), pump control module (2), data communication module (3), data storage module (4), relay control module (5), power control module (6), output module (7), MCU control module (8), indicating module (9), its characterized in that: photoelectric conversion module (1) is connected on pump control module (2), pump control module (2) is connected on data communication module (3), data communication module (3) is connected on data storage module (4), data storage module (4) is connected on relay control module (5), relay control module (5) is connected on power control module (6), power control module (6) is connected on output module (7), output module (7) is connected on MCU control module (8), MCU control module (8) is connected on instruction module (9), install last casing (10) on instruction module (9).

2. The self-pumped suspended particle counter of claim 1, wherein: go up movable mounting on casing (10) and have casing (11) down, fixed mounting has pump mounting bracket (13) on the inner wall of casing (11) down, and movable mounting has pump (14) on pump mounting bracket (13), is connected with laser sampler module (15) on pump mounting bracket (13), and fixed mounting has laser sampler (16) on laser sampler module (15), and fixed mounting has sampling pipe (18) on laser sampler (16).

3. A self-pumping optical suspended particle counter as claimed in claim 2, wherein: the lower shell (11) is provided with a mounting hole (12), and one end of the sampling tube (18) penetrates through the mounting hole (12).

4. The self-pumped suspended particle counter of claim 1, wherein: the upper shell (10) is fixedly provided with a connecting block (20), and the connecting block (20) is provided with a fixing hole (21).

5. A self-pumping optical suspended particle counter as claimed in claim 2, wherein: a connecting hole (17) is formed in the pump mounting frame (13), a matching hole (19) is formed in the laser sampler module (15), and the connecting hole (17) is matched with the matching hole (19).

6. A self-pumping optical suspended particle counter as claimed in claim 2, wherein: and an L-shaped plate (22) is fixedly mounted on the inner wall of the lower shell (11), and through holes (23) are formed in two ends of the L-shaped plate (22).