CN213956934U

CN213956934U - Auxiliary tool for calibrating and sampling large-flow air sampler

Info

Publication number: CN213956934U
Application number: CN202022011262.1U
Authority: CN
Inventors: 侯亚宁; 何康; 顾健民; 郭强
Original assignee: Shanghai Jinyi Inspection Technology Co ltd
Current assignee: Shanghai Jinyi Inspection Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-08-13
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses an auxiliary fixtures that is used for large-traffic air sampler calibration and sampling, this auxiliary fixtures include bottom plate, frame barrel and ring baffle, the frame barrel is located the bottom plate top surface, the ring baffle level is located frame barrel inner circle lateral wall middle part, frame barrel lateral wall portion fretwork. The defect that the spiral interface is connected between the traditional sampler and the flow calibration adapter is overcome by the tool, connection of the spiral interface is conveniently realized, the connection operation efficiency is improved, and the sampling precision of the sampler is ensured.

Description

Auxiliary tool for calibrating and sampling large-flow air sampler

Technical Field

The utility model relates to an environmental protection technology field especially relates to an auxiliary fixtures that is used for large-traffic air sampler calibration and sampling.

Background

Along with the improvement of the environmental protection requirement, in order to practically implement the measures for preventing and controlling the dust pollution and improve the ambient air quality, an online monitoring instrument is installed to monitor the dust in real time, and the online monitoring data of the dust is brought into the law enforcement category. After the dust on-line monitor is installed and used, the dust on-line monitor generally needs to be regularly compared with a manual sampling measurement result for testing, and the correlation between the dust on-line monitor and the manual sampling measurement result is found for effective evaluation or calibration and correction, so that the accuracy of dust on-line monitoring data can be ensured within a certain time, and the quality of ambient air can be accurately evaluated.

When the large-flow air sampler samples, the filter material is installed to extract air with a certain volume at a certain flow, and the actual concentration of particulate matters in the air is calculated through the weight of the particulate matters enriched on the filter material and the gas production volume, so that the accuracy of the flow of the sampler is very important, and the concentration of the particulate matters is directly influenced. Therefore, the sampler needs to be calibrated for flow, temperature and pressure before sampling so as to ensure the effectiveness of the sampled product. Generally, a large-flow air sampler (HV-500R type air sampler) is provided with a touch-type liquid crystal display screen, and when the flow, temperature and pressure are calibrated, the calibration can be completed only by correcting the values of a standard hygrothermograph and a pressure gauge on the touch screen of the sampler. However, when the flow is calibrated, a flow calibration adapter is needed, the threaded end of the flow calibration adapter is connected with the interface of the sampler, and the sampler automatically corrects the flow according to the standard flow set on the flow calibration adapter. However, in the actual calibration operation, the interface between the flow calibration adapter and the sampler is often stuck. Because the bottom of the sampler is usually provided with parts such as a power line and a socket, the sampler is usually horizontally placed, the spiral interfaces of the sampler and the flow calibration adapter are both positioned in the horizontal direction, the spiral interfaces of the two devices are made of ultra-precise materials, and the spiral interfaces of the two devices are blocked due to uneven operation force during connection. In actual operation, the sampler is found to be vertically placed, namely the spiral connector is vertically upward, so that the connection operation between the spiral connectors is more convenient, and the phenomenon of interface locking is not easy to occur. Therefore, the labor cost is improved, the operation efficiency of equipment connection is reduced, equipment faults are easy to happen due to the fact that the spiral interface is blocked, and the sampling precision of the sampler is affected.

Disclosure of Invention

The utility model aims to solve the technical problem that an auxiliary fixtures for large-traffic air sampler calibration and sampling is provided, the defect of screw interface connection between traditional sample thief and the flow calibration adapter is overcome to this frock, conveniently realizes screw interface's connection, improves and connects operating efficiency, ensures the sampling precision of sample thief.

In order to solve the technical problem, the utility model discloses an auxiliary fixtures for large-traffic air sampler calibration and sampling includes bottom plate, frame barrel and ring baffle, the frame barrel is located the bottom plate top surface, the ring baffle level is located frame barrel inner circle lateral wall middle part, frame barrel lateral wall portion fretwork.

Further, the cross section of the frame cylinder body is square, and the side length of the square is 23 cm.

Further, the width of the annular baffle is 1 cm.

Further, the frame cylinder is arranged in the center of the top surface of the bottom plate, and the periphery of the bottom plate is larger than the periphery of the frame cylinder by 5 cm.

Because the utility model discloses an auxiliary fixtures for large-traffic air sampler calibration and sampling has adopted above-mentioned technical scheme, and this auxiliary fixtures includes bottom plate, frame barrel and ring baffle promptly, the frame barrel is located the bottom plate top surface, the ring baffle level is located frame barrel inner circle lateral wall middle part, frame barrel lateral wall portion fretwork. The defect that the spiral interface is connected between the traditional sampler and the flow calibration adapter is overcome by the tool, connection of the spiral interface is conveniently realized, the connection operation efficiency is improved, and the sampling precision of the sampler is ensured.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

fig. 1 is a schematic view of the auxiliary tool for calibrating and sampling the large-flow air sampler of the present invention;

fig. 2 is a schematic diagram of the internal structure of the frame cylinder of the tool.

Detailed Description

Embodiment is shown in fig. 1 and 2, the utility model discloses an auxiliary fixtures for large-traffic air sampler calibration and sampling includes bottom plate 1, frame barrel 2 and ring baffle 3, frame barrel 2 is located 1 top surface of bottom plate, ring baffle 3 level is located 2 inner circle lateral walls middle parts of frame barrel, 2 lateral wall parts fretworks of frame barrel.

Preferably, the cross section of the frame cylinder 2 is square, and the side length of the square is 23 cm.

Preferably, the width of the annular baffle 3 is 1 cm.

Preferably, the frame cylinder 2 is centrally arranged in the center of the top surface of the bottom plate 1, and the periphery of the bottom plate 1 is 5cm larger than the periphery of the frame cylinder 2. The stability of frock is improved.

When the large-flow air sampler is calibrated and sampled, the sampler is vertically arranged, then the bottom of the sampler is arranged in the frame cylinder of the tool and is placed on the annular baffle plate, so that the sampler is supported by the bottom plate, the frame cylinder and the annular baffle plate, the sampler is stably positioned on the tool, the hollowed side wall of the frame cylinder is convenient for the heat dissipation of the sampler and the operation of a control button of the sampler at a corresponding position, the space at the bottom of the frame cylinder is convenient for the arrangement of parts such as a power line, a socket and the like of the sampler, at the moment, the connection with a spiral interface between the sampler and a flow calibration adapter and the sampling and correcting operation of the sampler can be carried out by only one person,

the tool is simple in structure and convenient to manufacture, the field sampler is convenient to calibrate and sample, the working efficiency of equipment is improved after the tool is applied, the fault that the calibration spiral interface is blocked hardly occurs, the calibration operation can be completed on the field only by one person, the labor cost is saved, and the sampling precision is ensured.

Claims

1. The utility model provides an auxiliary fixtures that is used for large-traffic air sampler calibration and sampling which characterized in that: the tool comprises a bottom plate, a frame barrel and an annular baffle, wherein the frame barrel is arranged on the top surface of the bottom plate, the annular baffle is horizontally arranged in the middle of the inner ring side wall of the frame barrel, and the side wall part of the frame barrel is hollowed out.

2. The auxiliary tool for calibrating and sampling the large-flow air sampler according to claim 1, characterized in that: the cross section of the frame cylinder body is square, and the side length of the square is 23 cm.

3. The auxiliary tool for calibrating and sampling the large-flow air sampler according to claim 1 or 2, characterized in that: the width of the annular baffle is 1 cm.

4. The auxiliary tool for calibrating and sampling the large-flow air sampler according to claim 3, characterized in that: the frame cylinder is arranged in the center of the top surface of the bottom plate, and the periphery of the bottom plate is larger than the periphery of the frame cylinder by 5 cm.