CN214277583U

CN214277583U - High negative pressure environment air particulate matter sampling device

Info

Publication number: CN214277583U
Application number: CN202120315431.2U
Authority: CN
Inventors: 马占昆; 陈晓彤; 田伟; 孙晔
Original assignee: Qinghai Monet Environmental Protection Technology Co ltd
Current assignee: Qinghai Monet Environmental Protection Technology Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-09-24
Anticipated expiration: 2031-02-03

Abstract

The utility model is suitable for an air sampling technical field provides a high negative pressure environment air particulate matter sampling device, include: a high negative pressure ambient air particulate matter sampling device, comprising: the sampling device comprises a machine shell, a sampling pipe and an air outlet pipe, wherein the part of the sampling pipe, which is distributed in the machine shell, is spiral, a plurality of through holes are formed in the sampling pipe, a collecting box is arranged at the bottom of the machine shell, a sieving screen is slidably mounted in the collecting box, two ends of the sieving screen are respectively connected with the side wall of the collecting box through two springs, and a collecting component is arranged at the bottom of the machine shell; this design adopts spiral helicine sampling pipe to carry the air for small-size particulate matter collides each other and passes the through-hole and stays in the casing, and the sieve screen sieves the air afterwards, makes large-size particulate matter stay to the collecting box in, realizes the hierarchical sampling to high negative pressure environment air particulate matter, and then realizes distinguishing the sample to the particulate matter of unidimensional not, has improved the efficiency of particulate matter sampling.

Description

High negative pressure environment air particulate matter sampling device

Technical Field

The utility model relates to an air sampling technical field specifically is a high negative pressure environment air particulate matter sampling device.

Background

Air particulate matter collection system is the atmospheric instrument that is used for gathering atmospheric pollutants or receives the pollution, has played fine effect to the detection of harmful substance in air and the environment, often is used for carrying out air particulate matter's sampling work to high negative pressure environment.

Current high negative pressure environment air particulate matter sampling device often can not carry out the hierarchical processing to the particulate matter, is not convenient for carry out the sample analysis to the particulate matter of equidimension not, and is comparatively inconvenient to the collection of sample.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high negative pressure environment air particulate matter sampling device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a high negative pressure ambient air particulate matter sampling device, comprising: casing, sampling pipe and outlet duct, the air inlet of sampling pipe is located the casing top, and is equipped with the feeder hopper on the air inlet, the gas outlet of sampling pipe is located the collecting box, and is equipped with out the hopper on the gas outlet, the inside part of casing is laid to the sampling pipe is the heliciform, and is equipped with a plurality of through-holes on it, be connected with the force (forcing) pump on the sampling pipe, the bottom of casing is equipped with the collecting box, slidable mounting has the screen cloth in the collecting box, and the both ends of screen cloth are connected with the lateral wall of collecting box through two springs respectively, the diameter of through-hole is less than the mesh diameter of screen cloth, the bottom and the outlet duct of collecting box are connected, the bottom of casing is equipped with the collection subassembly.

As a further aspect of the present invention: and the inner wall of the shell is provided with protective cotton.

As a further aspect of the present invention: the collecting assembly is composed of two collecting plates which are mutually spliced, a closing plate is hinged to a position on the casing corresponding to the position contacting with the collecting plates, and the closing plate is clamped with the casing through a clamping assembly.

As a further aspect of the present invention: each collecting plate is provided with a plurality of collecting grooves.

As a further aspect of the present invention: the clamping assembly comprises a clamping rod and a clamping block, the clamping rod is slidably mounted on the outer wall of the shell, the clamping rod is in sliding fit with the limiting block fixed on the shell, and the clamping block in sliding fit with the clamping rod is arranged on the shell.

Compared with the prior art, the beneficial effects of the utility model are that:

this design adopts spiral helicine sampling pipe transport air for small-size particulate matter collides each other and passes the through-hole and stays in the casing, and the big sieve screen of mesh diameter ratio through-hole diameter sieves the air afterwards, makes large-size particulate matter stay to the collecting box in, realizes the hierarchical sampling to high negative pressure environment air particulate matter, and then realizes distinguishing the sample to the particulate matter of unidimensional, has improved the efficiency of particulate matter sampling, and the collection subassembly is convenient to be collected the particulate matter.

Drawings

Fig. 1 is a schematic structural diagram of a high negative pressure environment air particulate matter sampling device.

Fig. 2 is a schematic structural diagram of a collecting plate in the high negative pressure environment air particulate matter sampling device.

FIG. 3 is a schematic structural diagram of a clamping assembly in the high negative pressure environment air particulate sampling apparatus.

In the drawings: 1-shell, 2-sampling pipe, 3-through hole, 4-pressure pump, 5-feed hopper, 6-discharge hopper, 7-collecting box, 8-screen, 9-spring, 10-air outlet pipe, 11-closing plate, 12-collecting plate, 13-collecting tank, 14-clamping rod, 15-limiting block, 16-clamping block and 17-protective cotton.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

As shown in fig. 1, in the embodiment of the present invention, a high negative pressure environment air particulate matter sampling device includes: casing 1, sampling pipe 2 and outlet duct 10, the air inlet of sampling pipe 2 is located casing 1 top, and is equipped with feeder hopper 5 on the air inlet, the gas outlet of sampling pipe 2 is located collecting box 7, and is equipped with out hopper 6 on the gas outlet, the sampling pipe 2 lays the inside part of casing 1 and is the heliciform, and is equipped with a plurality of through-holes 3 on it, be connected with force (forcing) pump 4 on the sampling pipe 2, the bottom of casing 1 is equipped with collecting box 7, slidable mounting has screen cloth 8 in collecting box 7, and the both ends of screen cloth 8 are connected with the lateral wall of collecting box 7 through two springs 9 respectively, the diameter of through-hole 3 is less than screen cloth 8's mesh diameter, the bottom of collecting box 7 is connected with outlet duct 10, the bottom of casing 1 is equipped with the collection subassembly.

In practical application, the device is installed in a high negative pressure environment, the sampling tube 2 is driven by the pressure pump 4 to continuously suck air, the area of the air inlet area of the device can be enlarged due to the arrangement of the feed hopper 5, after the air enters the sampling tube 2 along with particles, the particles with smaller sizes pass through the through hole 3 to leave the sampling tube 2 and fall onto the bottom plate of the shell 1, and when the air moves along the spiral sampling tube 2, the particles in the air collide with each other, so that the particles fully shake and contact with the through hole 3, the screening efficiency of the through hole 3 is increased, then the air is discharged through the discharge hopper 6 to enter the screen mesh 8 and finally discharged through the air outlet pipe 10, the particles with larger sizes are left above the screen mesh 8 in the process, the screen mesh 8 descends when the air flow impacts the screen mesh 8, the spring 9 is compressed, the elastic force of the spring 9 recovering deformation is matched to enable the screen mesh 8 to shake up and down, the screen cloth slides relative to the side wall of the collecting box 7, so that the screening effect of the screen cloth 8 is effectively improved, and the particles in the screen cloth 07 can be collected after being disassembled 08; compared with the prior art, this design adopts spiral helicine sampling pipe 2 to carry the air, make small-size particulate matter collide each other and pass through-hole 3 and stay in casing 1, mesh diameter ratio 3 big screen cloth 8 of diameter of through-hole sieves the air afterwards, make large-size particulate matter stay to in the collecting box 7, the realization is to the hierarchical sampling of high negative pressure environment air particulate matter, and then the realization distinguishes the sample to the particulate matter of equidimension not, the efficiency of particulate matter sampling is improved, the collection subassembly is convenient to be collected the particulate matter.

As shown in fig. 1, as a preferred embodiment of the present invention, the inner wall of the casing 1 is provided with a protective cotton 17.

In this embodiment, when the setting of protection cotton 17 effectively avoided the particulate matter to remove from sampling pipe 2 to casing 1, the impact force that the collision produced led to the fact the problem of wearing and tearing to the lateral wall of casing 1, extension device's life.

As shown in fig. 1 to 3, as another preferred embodiment of the present invention, the collecting assembly is composed of two collecting plates 12, and the two collecting plates 12 are spliced together, a closing plate 11 is hinged to a position on the casing 1 corresponding to the position contacting with the collecting plates 12, and the closing plate 11 is clamped with the casing 1 through a clamping assembly; preferably, each collecting plate 12 is provided with a plurality of collecting grooves 13.

In one case of this embodiment, when sampling is required, the enclosure 1 is opened by turning over the closing plate 11 after the engaging assembly is unlocked, and then the collecting plate 12 is taken out to collect the particulate matter falling onto the collecting plate 12 in the enclosure 1; after the particulate matters fall onto the collecting plate 12, part of the particulate matters enter the collecting tank 13 to collide with each other, and finally stand still in the collecting tank 13, so that the collision and abrasion of the particulate matters are effectively reduced.

As shown in fig. 3, as another preferred embodiment of the present invention, the engaging component includes an engaging rod 14 and an engaging block 16, the engaging rod 14 is slidably mounted on the outer wall of the casing 1, and the engaging rod 14 is slidably engaged with a limiting block 15 fixed to the casing 1, and the casing 1 is provided with the engaging block 16 slidably engaged with the engaging rod 14.

In practical application, the limiting block 15 limits the clamping rod 14, when the enclosure 1 is sealed, the clamping rod 14 slides through the clamping block 16 after the enclosure plate 11 is turned over, and the enclosure plate 11 can be locked, so that the influence on sampling of particulate matters caused by turning over and opening of the enclosure plate 11 is avoided; the locking of the closing plate 11 can be released by sliding the engaging rod 14 away from the engaging block 16.

It should be noted that, the electric components of the present invention, such as the pressure pump 4, are connected to the external controller, which is the prior art, and the present invention does not modify the external controller, so that the disclosure of specific model, circuit structure, etc. of the external controller is not required, and the integrity of the present invention is not affected.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A high negative pressure ambient air particulate matter sampling device, comprising: casing (1), sampling pipe (2) and outlet duct (10), its characterized in that, the air inlet of sampling pipe (2) is located casing (1) top, and is equipped with feeder hopper (5) on the air inlet, the gas outlet of sampling pipe (2) is located collecting box (7), and is equipped with out hopper (6) on the gas outlet, the part that sampling pipe (2) laid inside casing (1) is the heliciform, and is equipped with a plurality of through-holes (3) on it, be connected with force (forcing) pump (4) on sampling pipe (2), the bottom of casing (1) is equipped with collecting box (7), slidable mounting has cross screen cloth (8) in collecting box (7), and the both ends of crossing screen cloth (8) are connected with the lateral wall of collecting box (7) through two springs (9) respectively, the diameter of through-hole (3) is less than the mesh diameter of crossing screen cloth (8), the bottom and outlet duct (10) of collecting box (7) are connected, the bottom of the machine shell (1) is provided with a collecting component.

2. The high negative pressure ambient air particulate matter sampling device of claim 1, characterized in that the inner wall of the housing (1) is provided with protective cotton (17).

3. The high negative pressure environment air particulate matter sampling device according to claim 1 or 2, characterized in that the collecting assembly is composed of two collecting plates (12), the two collecting plates (12) are spliced with each other, a closing plate (11) is hinged on the casing (1) at a position corresponding to the contact position of the collecting plates (12), and the closing plate (11) is clamped with the casing (1) through a clamping assembly.

4. A high negative pressure ambient air particulate sampling device according to claim 3, wherein each collecting plate (12) is provided with a plurality of collecting troughs (13).

5. The high negative pressure ambient air particulate matter sampling device according to claim 4, wherein the clamping assembly comprises a clamping rod (14) and a clamping block (16), the clamping rod (14) is slidably mounted on the outer wall of the housing (1), the clamping rod (14) is slidably engaged with a limiting block (15) fixed on the housing (1), and the clamping block (16) slidably engaged with the clamping rod (14) is arranged on the housing (1).