CN201837543U - Air microbial sampler based on automatic filling of sampling liquid and automatic delivering of sample liquid - Google Patents

Abstract

An air microbial sampler based on automatic filling of sampling liquid and automatic delivery of sample liquid, including a central control machine, a sampler and a microbial inspection sensor. The communication is connected with the sampler and the microbial inspection sensor, the sampler controller is directly connected with the automatic filling of sampling liquid, the automatic liquid level detection sensor and the solenoid valve, the solenoid valve is directly connected with the liquid inlet channel of the biological inspection sensor, and the sampler transmits the sampling signal The sampler controller transmits to the central control microprocessor, and the sampler controller controls the opening and closing of the solenoid valve. The sampler controller controls the automatic filling of sampling liquid, automatic liquid level detection and the solenoid valve of the sampler directly opens the sample liquid channel after sampling, and automatically extracts the sample liquid after the biological test sensor receives the central control liquid extraction command. The utility model adopts a central control machine to realize central control, and realizes automatic filling of sampling liquid, automatic sensing and detection of liquid level and automatic extraction of sample liquid.

Description

Air microbial sampler based on automatic filling of sampling liquid and automatic delivery of sample liquid

technical field

The utility model relates to an air microbial sampler based on automatic injection of sampling liquid and automatic delivery of sample liquid.

Background technique

The air microbial sampler consists of a sampling head, a 100L/min fan, a 5L/min sampling pump, a sampling bottle, a syringe pump and a sampler controller. The sampling head, fan and sampling pump concentrate the microbial particles in the air. The particle size range of the selected sample gas is 1-10μm. in the bottle. After the collection is completed, the central control system notifies the sampler to open the solenoid valve, and then sends an instruction to the biological test sensor to take the liquid.

Before collecting the sample liquid, the traditional biological sampler must manually open the hatch of the sampler to place the sampling bottle, the air inlet and outlet pipelines connected to it, manually fill the sampling liquid, and then put the sampling bottle back to its original position. After the gas sample collection is completed, manually open the hatch of the sampler to place the sampling bottle again, unplug the connected air inlet and outlet pipes, take out the sampling bottle, and inspectors manually Manually draw the sample liquid from the sampling bottle. After the sample liquid is sucked, manually clean the sampling bottle, put the sampling bottle back to its original position again, connect the upper air inlet and outlet pipes, and close the hatch. Usually a sampling requires a series of tedious work manually, which is very inefficient; and the sampling bottle is a fragile glass product, so it needs to be handled carefully. Frequent plugging and unplugging of the air inlet and outlet pipelines will easily lead to premature aging of the pipelines and loosening of the joints, which increases the maintenance workload of the equipment and affects the life of the equipment.

Utility model content

The purpose of the utility model is to adopt a central control machine to realize central control, realize automatic filling of sampling liquid, automatic sensing and detection of liquid level and automatic extraction of sample liquid.

The purpose of this utility model is achieved through the following technical solutions.

The air microbial sampler based on the automatic injection of sampling liquid and the automatic delivery of sample liquid includes a central control machine, which is equipped with a central control microprocessor, which is connected to the sampler controller through a serial port. The sampler controller is directly connected to the solenoid valve and sensor for automatic filling of sampling liquid, automatic liquid level detection and control of the sampler, and the sampler transmits the sampling signal to the central control microprocessor through the serial port, and the central control microprocessor The controller controls the opening and closing of the solenoid valve according to the sensor signal. The central control microprocessor of the sampler controls the automatic filling of sampling liquid, the automatic liquid level detection sensor and the solenoid valve of the control sampler to directly open the sample liquid channel after sampling. Automatically take liquid and clean the sampling bottle.

After the instrument is powered on, the automatic flow rate calibration is zero. After the end, it is in the state of waiting for instructions; at this time, the liquid filling valve and liquid discharge valve are closed, the time required for sampling has also been set, the liquid level detection is normal, and the sampling bottle has not reached liquid level, the instrument has no fault indication and is in a normal state. The instrument completes a sample sampling work through five major steps.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is a structural layout diagram of an air microbial sampler based on automatic filling of sampling liquid and automatic delivery of sample liquid.

Detailed ways

Based on the air microbial sampler based on the automatic filling of sampling liquid and the automatic delivery of sample liquid, it includes a central control machine, which is equipped with a central control microprocessor, through which the central control microprocessor is connected with the automatic filling of sampling liquid, the liquid level The solenoid valve of the automatic detection sensing and control sampler is directly connected with the sensor, the sensor transmits the sampling signal to the central control microprocessor, and the central control microprocessor controls the opening and closing of the solenoid valve according to the sensor signal. The central control microprocessor of the sampler controls the automatic filling of the sampling liquid, the automatic detection of the liquid level and the solenoid valve of the control sampler to directly open the sample liquid channel after sampling, and wait for the biological test sensor to receive the command of the central control to take the liquid After that, the liquid is automatically taken out and the sampling bottle is cleaned.

After the instrument is powered on, the automatic flow rate calibration is zero. After the end, it is in the state of waiting for instructions; at this time, the liquid filling valve and liquid discharge valve are closed, the time required for sampling has also been set, the liquid level detection is normal, and the sampling bottle has not reached liquid level, the instrument has no fault indication and is in a normal state. The instrument completes a sample sampling work through five major steps.

Step 1. Automatic filling of sampling liquid: the central control controls the syringe pump to automatically fill a certain volume of sampling liquid into the sampling bottle, the liquid discharge valve is closed, and the sampling pump is in a stopped state. The liquid level sensing detection part detects whether there is residual liquid in the sampling bottle at this time. If there is residual liquid, the central control automatically controls to open the liquid valve and automatically transports and discharges the remaining liquid in the sampling bottle before starting to add new sampling liquid.

Step 2. Sampling: The liquid discharge valve is closed, the central control controls the sampling pump to start, and after continuous sampling reaches the set sampling time, the sampling pump stops automatically.

Step 3. Automatically transport the sample liquid: the central control opens the drain valve to automatically transport the sample liquid, the sampling pump stops, and closes the drain valve after the test sensor has finished taking the liquid.

Step 4. Cleaning: The central control controls the syringe pump to automatically add a certain volume of cleaning solution to the sampling bottle, the drain valve is closed, and the sampling pump is stopped.

Step 5. Automatic cleaning of the sampling bottle: the drain valve is closed, and the central control controls the cleaning of the sampling bottle.

Step 6. Automatic discharge of cleaning liquid: the sampling pump stops, the central control controls the opening of the liquid valve, and the central control controls the biological detection sensor to automatically discharge the cleaning liquid.

When the equipment is executed to step 3, the sampling will automatically stop after the set sampling time, and an instruction to notify the central control machine will be issued. After the central control computer receives the feedback command, it opens the liquid discharge valve and notifies the biological detection sensor to collect the sample liquid. After the specified sampling time is reached, the drain valve is closed. After the biological detection sensor completes the relevant detection work, the central control computer notifies the sampler to automatically inject cleaning solution into the sampling bottle. After cleaning, it sends a feedback command to notify the central control computer. The central control computer notifies the biometric sensor to discharge the waste liquid after learning the feedback instruction from the sampler. Thus, the sample liquid sampling of the sampler and the cleaning of the sampling bottle are completed.

The utility model completes the sampling and detection work under the control of the central control machine, realizes the real unattended operation, avoids frequent plugging and unplugging of various pipelines, the sampling bottle cabin can be closed, and the reliability of the equipment is greatly improved , greatly saving human resources, reducing loss and improving work efficiency.

Claims (2)

1. based on the automatic air microorganism sampler of filling and sample liquid automatic transport of sample solution, comprise: middle control machine, control microprocessor in being provided with in the middle control machine, middle control microprocessor links to each other with the sampling thief controller by serial port, the sampling thief controller is annotated automatically with sample solution, liquid level detects sensing automatically and the solenoid valve of control sampling thief directly is connected with sensor, it is characterized in that middle control microprocessor links to each other with the sampling thief controller by serial port.

2. the air microorganism sampler based on automatic filling of sample solution and sample liquid automatic transport according to claim 1, it is characterized in that the sampling thief controller is annotated automatically with sample solution, liquid level detects sensing automatically and the solenoid valve of control sampling thief directly is connected with sensor.

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