CN211927446U - Device for sampling atmospheric particulates - Google Patents

Abstract

The utility model provides a device for atmospheric particulates sample, include: install bin, sampling joint and coupling mechanism. The side wall of the installation box is provided with a connecting pipe in a penetrating manner, the front end of the connecting pipe is provided with an installation groove used for placing a filter membrane, the connecting pipe and the installation groove are both in an annular structure, the installation groove is positioned outside the installation box, and the side wall of the installation groove is provided with a notch; the sampling joint is hinged to the bottom of the front end of the connecting pipe and comprises a Venturi tube, the rear end of the Venturi tube is in contact with the connecting pipe, an elastic ring is arranged on the rear end face of the Venturi tube, the outer contour diameter of the elastic ring is smaller than that of the mounting groove, and the elastic ring is embedded in the mounting groove and clings to the filter membrane when the sampling device is used; the connecting mechanism comprises a connecting flange arranged at the bottom of the mounting box and a pair of connecting rings arranged on the outer side of the mounting box. The filter membrane is convenient to mount and take, stable to mount and convenient to apply.

Description

Device for sampling atmospheric particulates

Technical Field

The utility model belongs to the atmosphere monitoring field especially relates to a device for atmospheric particulates sample.

Background

When sampling atmospheric particulates in atmospheric monitoring, according to the existence form and concentration of pollutants in the atmosphere and the difference of the sensitivity of an analysis method, a gas sample collection method comprises the following steps: the non-concentration sampling method and the concentration sampling method. When the concentration of the object to be measured in the atmosphere is low or the sensitivity of the analysis method is not high enough, a concentration sampling method is used for collecting atmospheric particles, and the most widely used concentration sampling method is a filtration method or a solution absorption method. When the filtration method is adopted for collection, the filter paper or the filter membrane is clamped on a special sampling head, when the atmosphere passes through the filter paper or the filter membrane, the granular substances are blocked on the filter paper or the filter membrane, and then the filter paper or the filter membrane is taken down and then is taken back to a laboratory for further analysis.

The existing sampling device for atmospheric particulates has the defects of inconvenience in use, such as inconvenient disassembly and assembly of a filter membrane; the connector which can be used for installing and fixing the sampling device is single.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a device for sampling atmospheric particulates, a filter membrane is arranged outside an installation box, the filter membrane is fixed through the matching of a sampling joint and a connecting pipe, and the sampling joint is hinged with the connecting pipe to facilitate the disassembly and the assembly; the mounting box is provided with multiple coupling mechanism that is used for fixing, including the flange of bottom and the go-between of side to flange and go-between all are applicable to multiple connector and structure.

In order to realize the purpose of the utility model, the following scheme is proposed:

an apparatus for sampling atmospheric particulates, comprising: install bin, sampling joint and coupling mechanism.

The side wall of the installation box is provided with a connecting pipe in a penetrating manner, the front end of the connecting pipe is provided with an installation groove, the installation groove is used for placing a filter membrane, the connecting pipe and the installation groove are both in annular structures, the installation groove is positioned outside the installation box, and the side wall of the installation groove is provided with a notch;

the sampling joint is hinged to the bottom of the front end of the connecting pipe and comprises a Venturi tube, the rear end of the Venturi tube is in contact with the connecting pipe, an elastic ring is arranged on the rear end face of the Venturi tube, the outer contour diameter of the elastic ring is smaller than that of the mounting groove, and the elastic ring is embedded in the mounting groove and clings to the filter membrane when the sampling device is used;

the connecting mechanism comprises a connecting flange arranged at the bottom of the installation box and a pair of connecting rings arranged on the outer side of the installation box.

Further, still be equipped with aspiration pump, controller and storage battery in the install bin, the air inlet of aspiration pump with the connecting pipe rear end links to each other, the blast pipe of aspiration pump is followed the lateral wall of install bin is worn out, venturi wears to be equipped with flow sensor, aspiration pump, storage battery and flow sensor all with the controller links to each other.

Furthermore, the installation box side is equipped with the door plant through the articulated, the door plant surface rotates and is equipped with first solar panel, the installation box top is fixed with second solar panel.

Furthermore, first solar panel articulate in the last edge of door plant, first solar panel is equipped with a bracing piece at least, the front end of bracing piece rotates to be located first solar panel's side, the installation box lateral wall processing has first through-hole and second through-hole, when first solar panel expandes and the door plant is opened the rear end cartridge of bracing piece is in first through-hole, when first solar panel draws in the time the rear end cartridge of bracing piece is in the second through-hole.

Further, venturi front end is equipped with the taper pipe, and the rear end is equipped with the sealing washer, the sealing washer is located the periphery of elasticity ring.

Further, the installation box lateral wall is equipped with the exhaust fan, the relative both sides of installation box all are equipped with the handle.

Furthermore, the connecting flange comprises an upper plate and a lower plate, the lower plate is of a disc structure, and a plurality of strip-shaped holes and arc-shaped holes are uniformly processed on the lower plate along the circumference.

Further, the go-between includes base and fastening area, base one end connect in the install bin, other end processing has arc breach and rectangle breach, and arc breach and rectangle breach one side are located to the fastening area.

Further, the connecting pipe is equipped with fixed journal stirrup, venturi is equipped with movable journal stirrup, fixed journal stirrup all processes the same screw hole with movable journal stirrup, and works as when the venturi rear end pastes with the connecting pipe front end, the screw hole of fixed journal stirrup and movable journal stirrup is coaxial.

The beneficial effects of the utility model reside in that:

1. the filter membrane dress is got very conveniently, can further improve work efficiency, and the filter membrane is placed in the connecting pipe front end, and the connecting pipe front end sets up in the install bin outside, can carry out the dress of filter membrane in the install bin outside and get, and the sampling joint articulates in the connecting pipe bottom, need not additionally consider the problem of placing of sampling joint when the filter membrane is got in the dress, and fastening bolt installs always on movable journal stirrup, and the convenience is used at any time.

2. The filter membrane installation is reliable and stable, and the filter membrane is placed and is being pushed down it tightly through the elasticity ring behind the mounting groove, can guarantee to make the sampling in-process filter membrane can not influence and appear sunkenly in response to the air current.

3. The installation box can be fixed on different connecting objects through the bottom or the side surface, application scenes of the installation box are increased, for example, the installation box can be fixedly connected with the connecting objects similar to a tripod by adopting a connecting flange at the bottom, and a strip-shaped hole and an arc-shaped hole are designed on a bottom plate of the connecting flange, so that the installation box can be conveniently connected in a screw shape; the side connecting ring can be used for connecting and fixing upright post type connecting objects with round sections or rectangular sections.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

Fig. 1 shows the overall construction of the present invention;

fig. 2 shows a state of use of the invention;

fig. 3 shows the utility model in a folded state;

FIG. 4 shows a construction diagram of a sampling adapter;

FIG. 5 shows a structural view of a connection pipe;

FIG. 6 shows a configuration diagram of a connection ring;

FIG. 7 shows a block diagram of a connection flange;

fig. 8 shows a structural view of the fastening screw.

The labels in the figure are: 1-filter membrane, 2-air pump, 3-controller, 4-storage battery, 5-flow sensor, 6-charging port, 10-installation box, 101-first through hole, 102 second through hole, 11-connecting pipe, 111-installation groove, 112-notch, 113-fixed support lug, 12-door plate, 121-sealing gasket, 13-first solar panel, 14-second solar panel, 15-support rod, 16-exhaust fan, 17-handle, 20-sampling joint, 21-Venturi tube, 211-movable support lug, 22-conical tube, 23-elastic ring, 24-fastening bolt, 25-sealing ring, 30-connecting mechanism, 31-connecting flange, 311-upper plate, 312 lower plate, 3121-strip-shaped hole, 3122-arc hole, 32-connecting ring, 321-base, 3211-arc notch, 3212-rectangular notch, and 322-fastening band.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are some embodiments of the present invention, not all embodiments.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and this is only for the convenience of description of the present invention and simplification of the description. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

As shown in fig. 1-8, an apparatus for sampling atmospheric particulates includes a mounting case 10, a sampling adapter 20, and a connection mechanism 30.

Specifically, connecting pipe 11 wears to be equipped with to lateral wall before installation box 10, connecting pipe 11 front end protrusion in the surface of installation box 10, connecting pipe 11 front end processing has mounting groove 111, mounting groove 111 is used for placing filter membrane 1, connecting pipe 11 all is the loop configuration with mounting groove 111, mounting groove 111 lateral wall processing has breach 112, breach 112 is the arc, be used for the finger to stretch into and take out filter membrane 1, connecting pipe 11 top surface is equipped with fixed journal stirrup 113, and processing has the screw hole parallel with connecting pipe 11 axis.

Still be equipped with aspiration pump 2, controller 3 and storage battery 4 in the install bin 10, the air inlet of aspiration pump 2 links to each other with the connecting pipe 11 rear end, and the blast pipe of aspiration pump 2 is worn out from the rear wall of install bin 10, and aspiration pump 2, storage battery 4 and flow sensor 5 all link to each other with controller 3, and controller 3 can be used to control the operating time of aspiration pump 2 and monitor storage battery 4's electric quantity.

An exhaust fan 16 is arranged on the rear side wall of the installation box 10, and the fan 16 is opposite to the tail part of the air extracting pump 2 and used for exhausting heat emitted by the air extracting pump 2 in the working process out of the installation box 10.

Install bin 10 right flank is equipped with door plant 12 through articulated, door plant 12 articulates in the lower border of install bin 10, door plant 12 is opened the back and is parallel with the horizontal plane, be convenient for place small-size instrument or sampling utensil after door plant 12 is opened, door plant 12 surface rotates and is equipped with first solar panel 13, install bin 10 top is fixed with second solar panel 14 for charge for storage battery 4, storage battery 4 still can charge through external power source simultaneously, one side that install bin 10 is close to storage battery 4 is provided with charging mouth 6.

More specifically, first solar panel 13 articulates in the last edge of door plant 12, first solar panel 13 is equipped with a bracing piece 15 at least, stability when guaranteeing fastness after door plant 12 opens and first solar panel 13 and use can set up two bracing pieces 15, the front end of bracing piece 15 rotates the side of locating first solar panel 13, install bin 10 lateral wall processing has first through-hole 101 and second through-hole 102, bracing piece 15's rear end cartridge in first through-hole 101 when first solar panel 13 expandes and door plant 12 opens, door plant 12 opens back first solar panel 13 and fixes first solar panel 13 through the ascending pulling force of bracing piece 15, first solar panel 13 also holds up door plant 12 simultaneously, bracing piece 15's rear end cartridge in second through-hole 102 when first solar panel 13 draws in, fix first solar panel 13.

A circle of sealing gasket 121 is pasted on the edge of the inner surface of the door panel 12, and the sealing gasket 121 is higher than the inner surface of the door panel 12, so that the door panel 12 can be prevented from sliding off when being used for placing tools or sampling devices.

Specifically, sampling joint 20 includes venturi 21, venturi 21 articulates in connecting pipe 11 front end bottom, the front end contact of venturi 21 rear end and connecting pipe 11, venturi 21's surface is equipped with movable journal stirrup 211, fixed journal stirrup 113 and movable journal stirrup 211 all process the same screw hole, and when venturi 21 rear end and connecting pipe 11 front end laminating, the screw hole of fixed journal stirrup 113 and movable journal stirrup 211 is coaxial, be equipped with fastening bolt 24 in the screw hole of movable journal stirrup 211, be used for connecting sampling joint 20 and connecting pipe 11. The rear end face of the Venturi tube 21 is provided with the elastic ring 23, the outer contour diameter of the elastic ring 23 is smaller than that of the installation groove 111, the elastic ring 23 is embedded in the installation groove 111 when the sampling device is used and tightly attached to the filter membrane 1, the elastic ring 23 is uniformly compressed on the circumferential edge of the filter membrane 1, the stress of the filter membrane 1 under the action of air flow is more uniform, and deformation is prevented.

More specifically, the front end of the fastening bolt 24 is a threaded portion, the middle section is a cylindrical structure, and the tail portion is provided with a butterfly structure, the diameter of the middle section cylindrical structure is smaller than the small diameter of the threads of the threaded holes processed by the fixed lug 113 and the movable lug 211, the length of the middle section cylindrical structure is larger than the thickness of the movable lug 211, so that the threaded portion is not engaged with the threaded holes of the fixed lug 113 and the movable lug 211 simultaneously during connection, but is only engaged with the threaded hole of the fixed lug 113, and the butterfly structure at the tail portion is designed to facilitate screwing and loosening of the fastening bolt 24.

Venturi 21 front end is equipped with conical duct 22, is favorable to the smooth entering of air current, can avoid leaf class impurity to get into venturi 21 simultaneously and influence the sample result, and venturi 21 rear end is equipped with sealing washer 25 for the terminal surface of being connected of sealed venturi 21 and connecting pipe 11, sealing washer 25 is located the periphery of elastic ring 23.

Venturi 21 wears to be equipped with flow sensor 5, and flow sensor 5 links to each other with controller 3 to data storage with gathering in controller 3, controller 3 can copy out the data of storage through the USB interface.

Specifically, the connection mechanism 30 includes a connection flange 31 provided at the bottom of the mounting box 10, and a pair of connection rings 32 provided at the outer side of the mounting box 10.

More specifically, the connecting flange 31 includes an upper plate 311 and a lower plate 312, and the connecting flange 31 is connected to the mounting box 10 through the upper plate 311, and can be connected by welding or screwing; the lower plate 312 has a disc structure, and a plurality of strip holes 3121 and arc holes 3122 are uniformly formed along the circumference of the lower plate 312. The strip-shaped holes 3121 are opened along the normal direction of the lower plate 312 and can be connected to the connectors of the through holes with different intervals, and the arc-shaped holes 3122 are annularly arranged and can be connected to the connectors of the through holes with different included angles.

The connection ring 32 includes a base 321 and a fastening belt 322, one end of the base 321 is connected to the installation box 10, an arc notch 3211 and a rectangular notch 3212 are processed at the other end, and the fastening belt 322 is disposed on one side of the arc notch 3211 and the rectangular notch 3212. The arc-shaped gap 3211 can be used when connecting with a cylindrical object, such as a telegraph pole, a tree, etc.; rectangular gap 3212 may be used when connected to objects having a rectangular cross-section, such as partial traffic light poles and street light poles.

Preferably, handles 17 are provided on opposite sides of the mounting box 10 to facilitate use of the device.

The foregoing is only a preferred embodiment of the invention and is not intended to be the only or limiting embodiment of the invention. It should be understood by those skilled in the art that various changes and equivalent substitutions made herein may be made without departing from the scope of the invention as defined by the appended claims.

Claims (9)

1. An apparatus for sampling atmospheric particulates, comprising:

the filter membrane filter mounting structure comprises a mounting box (10), wherein a connecting pipe (11) penetrates through the side wall of the mounting box (10), a mounting groove (111) is machined at the front end of the connecting pipe (11), the mounting groove (111) is used for placing a filter membrane (1), the connecting pipe (11) and the mounting groove (111) are both in annular structures, the mounting groove (111) is located outside the mounting box (10), and a notch (112) is machined in the side wall of the mounting groove (111);

the sampling connector (20) is hinged to the bottom of the front end of the connecting pipe (11), the sampling connector (20) comprises a Venturi pipe (21), the rear end of the Venturi pipe (21) is in contact with the connecting pipe (11), an elastic ring (23) is arranged on the rear end face of the Venturi pipe (21), the outer contour diameter of the elastic ring (23) is smaller than that of the mounting groove (111), and the elastic ring (23) is embedded in the mounting groove (111) and clings to the filter membrane (1) when the sampling device is used;

the connecting mechanism (30) comprises a connecting flange (31) arranged at the bottom of the mounting box (10), and a pair of connecting rings (32) arranged on the outer side of the mounting box (10).

2. The device for sampling the atmospheric particulates according to claim 1, wherein an air suction pump (2), a controller (3) and a storage battery pack (4) are further arranged in the installation box (10), an air inlet of the air suction pump (2) is connected with the rear end of the connecting pipe (11), an exhaust pipe of the air suction pump (2) penetrates out from the side wall of the installation box (10), the venturi pipe (21) is provided with a flow sensor (5) in a penetrating manner, and the air suction pump (2), the storage battery pack (4) and the flow sensor (5) are all connected with the controller (3).

3. The device for sampling the atmospheric particulates according to claim 1, wherein a door panel (12) is hinged to the side of the installation box (10), a first solar panel (13) is rotatably arranged on the outer surface of the door panel (12), and a second solar panel (14) is fixed to the top of the installation box (10).

4. The device for sampling the atmospheric particulates according to claim 3, wherein the first solar panel (13) is hinged to the upper edge of the door panel (12), the first solar panel (13) is provided with at least one support rod (15), the front end of the support rod (15) is rotatably arranged on the side surface of the first solar panel (13), the side wall of the installation box (10) is provided with a first through hole (101) and a second through hole (102), the rear end of the support rod (15) is inserted into the first through hole (101) when the first solar panel (13) is unfolded and the door panel (12) is opened, and the rear end of the support rod (15) is inserted into the second through hole (102) when the first solar panel (13) is folded.

5. A device for sampling atmospheric particles according to claim 1, characterized in that the venturi tube (21) is provided with a tapered tube (22) at the front end and a sealing ring (25) at the rear end, and the sealing ring (25) is located at the periphery of the elastic ring (23).

6. A device for sampling atmospheric particles as claimed in claim 1, wherein the side wall of the installation box (10) is provided with an exhaust fan (16), and handles (17) are arranged on two opposite sides of the installation box (10).

7. The device for sampling atmospheric particulates according to claim 1, wherein the connecting flange (31) comprises an upper plate (311) and a lower plate (312), the lower plate (312) is of a disc structure, and a plurality of strip-shaped holes (3121) and arc-shaped holes (3122) are uniformly formed along the circumference of the lower plate (312).

8. The device for sampling the atmospheric particulates according to claim 1, wherein the connecting ring (32) comprises a base (321) and a fastening belt (322), one end of the base (321) is connected to the mounting box (10), the other end of the base is provided with an arc notch (3211) and a rectangular notch (3212), and the fastening belt (322) is disposed at one side of the arc notch (3211) and the rectangular notch (3212).

9. A device for sampling atmospheric particulates according to claim 1, characterized in that the connecting pipe (11) is provided with a fixed lug (113), the venturi pipe (21) is provided with a movable lug (211), the fixed lug (113) and the movable lug (211) are both provided with the same threaded hole, and when the rear end of the venturi pipe (21) is attached to the front end of the connecting pipe (11), the threaded holes of the fixed lug (113) and the movable lug (211) are coaxial.

Images