CN213933285U

CN213933285U - Mixed type vacuum box sampler

Info

Publication number: CN213933285U
Application number: CN202022948112.3U
Authority: CN
Inventors: 李宽; 王忠磊
Original assignee: Hebei Jieqing Environmental Protection Technology Co ltd
Current assignee: Hebei Jieqing Environmental Protection Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-10
Anticipated expiration: 2030-12-08

Abstract

The utility model belongs to the technical field of the environment detection technique and specifically relates to mixed type vacuum box sample thief, to the problem that vacuum box sample thief among the prior art experiment cost is low with high efficiency, the following scheme is proposed at present, and it includes vacuum box and collection bag, the case lid is installed at vacuum box's top, installs the manometer of measuring the inside pressure of vacuum box on the case lid, be fixed with the intake pipe that one end extends to vacuum box inside on one side outer wall of vacuum box, the intake pipe is located the outside one end of vacuum box and installs the governing valve, and flow control valve is installed to the other end of governing valve, and flow control valve's entry is fixed with the probe, be fixed with the exhaust tube that one end extends to vacuum box inside on vacuum box's the opposite side outer wall. The utility model discloses rational in infrastructure, easy operation can the low discharge last the gaseous sample of an hour collection experiment point location to improve sampling efficiency, improved laboratory analysis efficiency, reduce the experiment cost, easily use widely.

Description

Mixed type vacuum box sampler

Technical Field

The utility model relates to an environment measuring field especially relates to mixed type vacuum chamber sample thief.

Background

When detecting ambient air quality, can use the sample thief, vacuum box sample thief is used commonly among the prior art samples gas, vacuum box sample thief of prior art is the sampling device that flow is not adjustable, because the experiment needs the hour mean value of some point sample of assay, then need gather 3-4 times in an hour according to the standard, an experiment point needs 4 point positions to gather simultaneously, 12 samples need be gathered at least so an hour, the laboratory need calculate the mean value after 12 sample analyses, so experiment cost high efficiency is low, for this reason, this scheme has proposed mixed type vacuum box sample thief.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mixed type vacuum box sample thief has solved the problem that vacuum box sample thief among the prior art experiment cost effectiveness is low.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the mixed type vacuum box sampler comprises a vacuum box and a collecting bag, wherein a box cover is installed at the top of the vacuum box, a pressure gauge for measuring the pressure inside the vacuum box is installed on the box cover, an air inlet pipe with one end extending to the inside of the vacuum box is fixed on the outer wall of one side of the vacuum box, an adjusting valve is installed at one end, located outside the vacuum box, of the air inlet pipe, a flow control valve is installed at the other end of the adjusting valve, a probe is fixed at the inlet of the flow control valve, an exhaust pipe with one end extending to the inside of the vacuum box is fixed on the outer wall of the other side of the vacuum box, and a sealing valve is installed on the exhaust pipe;

the collecting bag is located the inside of vacuum chamber, and the afterbody of collecting the bag is fixed with the stationary blade, and the both ends of stationary blade all are fixed with the compact heap, the sack of collecting the bag is fixed with the connecting pipe, and the other end of connecting pipe is fixed with the adapter sleeve, the detachable cup joint of adapter sleeve is located the outside of the inside one end of vacuum chamber in the intake pipe.

Preferably, the inner ring of the connecting sleeve is provided with an internal thread, the outer ring of the end, located inside the vacuum box, of the air inlet pipe is provided with an external thread, and the connecting sleeve is sleeved outside the air inlet pipe and in threaded connection with the air inlet pipe.

Preferably, the outer walls of two opposite sides of the connecting sleeve are respectively fixed with a fixed block.

Preferably, the positioning ring is sleeved outside the air inlet pipe and located inside the vacuum box, the sealing ring is fixed on one side, close to the connecting sleeve, of the positioning ring, and the positioning ring is matched with the connecting sleeve.

Preferably, the pressing sheet is an aluminum sheet, and the collection bag is made of polytetrafluoroethylene.

Preferably, handles are fixed on the outer walls of the two sides of the vacuum box.

Preferably, one side of the box cover is hinged with one side of the top of the vacuum box, and the side, far away from the side hinged with the vacuum box, of the box cover is fixed with the vacuum box through a lock catch.

Preferably, the vacuum box is made of transparent plastic.

The utility model has the advantages that:

1. through the cooperation between vacuum chamber, intake pipe, collection bag, flow control valve and the probe, can control the speed that gets into the air in the collection bag to can be continuous carry out the sample of low discharge, thereby obtain the mixed sample of an hour, great having made things convenient for the process of experiment, simplified the step of operation, reduced the cost of experiment.

2. Through the arrangement of the connecting sleeve and the fixing block, the collecting bag and the air inlet pipe can be conveniently disassembled.

3. The collection bag is conveniently rolled up through the setting of stationary blade to the crowded sky of air in the collection bag, and can conveniently pin the collection bag after rolling up through the setting of compressing tightly piece, avoid gathering the bag and expand.

The utility model discloses rational in infrastructure, easy operation can the low discharge last the gaseous sample of an hour collection experiment point location to improve sampling efficiency, improved laboratory analysis efficiency, reduce the experiment cost, easily use widely.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural view of the sampling bag of the present invention.

Reference numbers in the figures: the device comprises a vacuum box 1, a box cover 2, a handle 3, an air suction pipe 4, a fixing ring 5, a lock catch 6, a flow control valve 7, a probe 8, a sampling bag 9, an air inlet pipe 10, an adjusting valve 11, a fixing piece 12, a pressing piece 13, a sealing ring 14, a connecting sleeve 15, a connecting pipe 16, a fixing block 17, a positioning ring 18 and a pressure gauge 19.

Detailed Description

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

Referring to fig. 1-4, the hybrid vacuum box sampler comprises a vacuum box 1 and a collecting bag 9, wherein a box cover 2 is installed at the top of the vacuum box 1, a pressure gauge 19 for measuring the pressure inside the vacuum box 1 is installed on the box cover 2, one side of the box cover 2 is hinged with one side of the top of the vacuum box 1, one side of the box cover 2, which is far away from the vacuum box 1, is fixed with the vacuum box 1 through a lock catch, and the pressure gauge 19 is arranged to facilitate an operator to guide the pressure inside the vacuum box 1;

an air inlet pipe 10 with one end extending into the vacuum box 1 is fixed on the outer wall of one side of the vacuum box 1, an adjusting valve 11 is installed at one end, located outside the vacuum box 1, of the air inlet pipe 10, a flow control valve 7 is installed at the other end of the adjusting valve 11, a probe 8 is fixed at the inlet of the flow control valve 7, an exhaust pipe 4 with one end extending into the vacuum box 1 is fixed on the outer wall of the other side of the vacuum box 1, a sealed valve is installed on the exhaust pipe 4, the adjusting valve 11 and the sealed valve hopper adopt butterfly valves and are used for sealing the air inlet pipe 10 and the exhaust pipe 4, the flow during gas collection can be conveniently adjusted through the arrangement of the flow control valve 7, and therefore long-time continuous sampling is achieved;

the collecting bag 9 is positioned inside the vacuum box 1, the tail part of the collecting bag 9 is fixed with a fixing sheet 12, two ends of the fixing sheet 12 are both fixed with pressing sheets 13, the setting of the fixing sheet is convenient for rolling up the collecting bag, so that air in the collecting bag is squeezed to be empty, the pressing sheets can be conveniently pressed on the surface of the collecting bag 9 to lock the collecting bag 9 after the collecting bag 9 is rolled up through the setting of the pressing sheets 13, the collecting bag 9 is prevented from being unfolded, the pressing sheets 13 are aluminum sheets, the collecting bag 9 is made of polytetrafluoroethylene, the aluminum sheets have good flexibility, and the straight bending is facilitated;

a connecting pipe 16 is fixed at the mouth of the collecting bag 9, a connecting sleeve 15 is fixed at the other end of the connecting pipe 16, the connecting sleeve 15 is detachably sleeved outside one end of the air inlet pipe 10 positioned in the vacuum box 1, an inner ring of the connecting sleeve 15 is provided with an internal thread, an outer ring of one end of the air inlet pipe 10 positioned in the vacuum box 1 is provided with an external thread, the connecting sleeve 15 is sleeved outside the air inlet pipe 10 and is in threaded connection with the air inlet pipe 10, the collecting bag 9 is convenient to disassemble and assemble due to the arrangement of the connecting sleeve 15, the fixing blocks 17 are fixed on the outer walls of two opposite sides of the connecting sleeve 15, and the connecting sleeve 15 is convenient to rotate due to the arrangement of the fixing blocks 7;

a positioning ring 18 is sleeved outside the air inlet pipe 10, the positioning ring 18 is positioned inside the vacuum box 1, a sealing ring 14 is fixed on one side, close to the connecting sleeve 15, of the positioning ring 18, the positioning ring 18 is matched with the connecting sleeve 15, and the arrangement of the positioning ring 18 and the sealing ring 14 further enhances the airtightness between the connecting sleeve 15 and the air inlet pipe 10 and avoids air leakage;

handles 3 are fixed on the outer walls of the two sides of the vacuum box 1, and the arrangement of the handles 3 is convenient for lifting the vacuum box 1 on the hand, so that the vacuum box 1 is convenient to move and carry;

the vacuum box 1 is made of transparent plastic, and the condition inside the vacuum box 1 can be conveniently observed.

The working principle is as follows: when gathering gas, earlier close governing valve 11, the collection bag 9 that is in vacuum state installs on intake pipe 10 after that, then launch collection bag 9 again, then close sealed lid 2 again, then with external vacuum pump connection on exhaust tube 4, open the airtight valve on the exhaust tube 4 after that, then restart the vacuum pump and to the inside evacuation of vacuum box 1, turn over the airtight valve when attitude again when vacuum box 1 is inside in the vacuum, then stretch into the position that needs to gather gas with the probe again, the flow of flow control valve 7 is adjusted again after that, guarantee can be full of collection bag 9 under the condition of gathering an hour in succession, at last open governing valve 11 again and sample can.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The mixed type vacuum box sampler comprises a vacuum box (1) and a collecting bag (9), and is characterized in that a box cover (2) is installed at the top of the vacuum box (1), a pressure gauge (19) for measuring the internal pressure of the vacuum box (1) is installed on the box cover (2), an air inlet pipe (10) with one end extending to the inside of the vacuum box (1) is fixed on the outer wall of one side of the vacuum box (1), an adjusting valve (11) is installed at one end, located outside the vacuum box (1), of the air inlet pipe (10), a flow control valve (7) is installed at the other end of the adjusting valve (11), a probe (8) is fixed at an inlet of the flow control valve (7), an exhaust pipe (4) with one end extending to the inside of the vacuum box (1) is fixed on the outer wall of the other side of the vacuum box (1), and a sealing;

gather bag (9) and be located the inside of vacuum chamber (1), the afterbody of gathering bag (9) is fixed with stationary blade (12), and the both ends of stationary blade (12) all are fixed with compressing tightly piece (13), the sack of gathering bag (9) is fixed with connecting pipe (16), and the other end of connecting pipe (16) is fixed with adapter sleeve (15), detachable the cup jointing in intake pipe (10) of adapter sleeve (15) is located the outside of the inside one end of vacuum chamber (1).

2. The hybrid vacuum box sampler as claimed in claim 1, wherein the inner ring of the connecting sleeve (15) is provided with an internal thread, the outer ring of the end of the air inlet pipe (10) located inside the vacuum box (1) is provided with an external thread, and the connecting sleeve (15) is sleeved outside the air inlet pipe (10) and is in threaded connection with the air inlet pipe (10).

3. The hybrid vacuum box sampler as claimed in claim 1, wherein the connecting sleeve (15) has fixing blocks (17) fixed to the outer walls of opposite sides thereof.

4. The hybrid vacuum box sampler as claimed in claim 1, wherein the air inlet pipe (10) is sleeved with a positioning ring (18), the positioning ring (18) is located inside the vacuum box (1), a sealing ring (14) is fixed on one side of the positioning ring (18) close to the connecting sleeve (15), and the positioning ring (18) is matched with the connecting sleeve (15).

5. The hybrid vacuum box sampler as claimed in claim 1, wherein the compression sheet (13) is an aluminum sheet and the collection bag (9) is made of polytetrafluoroethylene.

6. Hybrid vacuum box sampler according to claim 1 characterized in that the vacuum box (1) has handles (3) fixed to both outer walls.

7. The hybrid vacuum box sampler as claimed in claim 1, wherein one side of the box cover (2) is hinged to one side of the top of the vacuum box (1), and the side of the box cover (2) away from the side hinged to the vacuum box (1) is fixed to the vacuum box (1) by a lock catch.

8. Hybrid vacuum box sampler according to claim 1 characterized in that the vacuum box (1) is made of transparent plastic.