CN218121528U

CN218121528U - Vacuum sampling box

Info

Publication number: CN218121528U
Application number: CN202222270758.XU
Authority: CN
Inventors: 高有坤; 高国兴; 田凯
Original assignee: Tianjin Hua Test Testing And Certification Co ltd
Current assignee: Tianjin Hua Test Testing And Certification Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-12-23
Anticipated expiration: 2032-08-26

Abstract

The utility model relates to a gaseous sampling technical field discloses a vacuum sampling case, including the sampling case, the sampling case includes that box and detachable connect the case lid on the box, be fixed with intake pipe and exhaust tube with the inside intercommunication of sampling case on the case lid, intake pipe below swing joint has the air pocket, the air pocket is located between case lid and the box, the exhaust tube is connected through the pipeline with the pump-out subassembly, the utility model discloses a principle when the outer pressure of air pocket is less than the pressure in the sample bag is sampled by sampled gas, and whole device low cost is small and exquisite portable, and is not power consumptive when adopting manual aspiration pump, accords with standard monitoring requirement, saves the laboratory cost, avoids the tradition to be because of the electroless and can not carry out the sampling dilemma of equipment, while operation is simple.

Description

Vacuum sampling box

Technical Field

The utility model relates to a gaseous sampling technical field, concretely relates to vacuum sampling box.

Background

In daily fixed pollution source, unorganized waste gas and ambient air monitoring, air pocket class sample sampling is a common sampling, there are multiple vacuum sampling bucket or vacuum sampling case in the existing market length, self embeds the aspiration pump, its price varies from 3000 yuan to 20000 yuan, to monitoring unit, it could satisfy daily monitoring demand to need the purchase several, it also would be very big purchase cost to come thereupon, simultaneously the electric vacuum box (bucket) bleed flow of the upper portion of the existing market is less, in the face of great negative pressure, unable normal sampling, in view of this, the utility model provides a vacuum sampling case.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems: the electronic vacuum box on the tradition market is with high costs, and the part flow of bleeding simultaneously is less, and is faced great negative pressure, the problem of unable normal sample.

The utility model provides a vacuum sampling box, including the sampling box, the sampling box includes that box and detachable connect the case lid on the box, and the connection between case lid and the box is sealed, avoids the external gas to get into and inside pressure leaks, be fixed with intake pipe and exhaust tube with the inside intercommunication of sampling box on the case lid, intake pipe below swing joint has the air pocket, the air pocket is located between case lid and the box, the exhaust tube is connected through the pipeline with the air exhaust subassembly, and the air exhaust subassembly adopts manual aspiration pump or pump bowl, and the gas that will adopt between box and the air pocket with the air exhaust subassembly during use is taken out, causes the outer pressure of air pocket to be less than the pressure in the sample bag, and the gas of being gathered just so gets into in the air pocket to accomplish the sampling.

As a further improvement of the technical scheme, the tail end of the air inlet pipe is connected with a conical interface, a jacket is arranged outside the conical interface, a nut is fixed on the box cover, the air inlet pipe is in threaded connection with the nut, and an inlet of the air bag is sleeved outside the conical interface.

As a further improvement of the technical scheme, a one-way valve is arranged in the air inlet pipe.

As a further improvement of the technical scheme, a hose is arranged at an inlet of the air bag, and the hose is in plug-in fit with the conical connector.

As a further improvement of the technical proposal, the opening of the air bag is provided with an elastic rope.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a principle when the outer pressure of gas bag is less than the pressure in the sample bag is to being sampled gaseous, whole device low cost, and is small and exquisite portable, and is not power consumptive when adopting manual aspiration pump, accords with standard monitoring requirement, saves the laboratory cost, avoids the tradition to be unable to carry out the sampling embarrassment because of equipment electroless, easy operation simultaneously, easy to use.

2. The utility model discloses a toper interface cooperation is pressed from both sides the cover and is extrudeed the opening part of air pocket for the air pocket is collecting gaseous in-process leakproofness greatly increased, avoids gaseous problem of leaking from swing joint.

Drawings

Fig. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a schematic view of a sectional structure of a case cover of the present invention;

fig. 3 is a partially enlarged view of a portion a of fig. 2.

Description of reference numerals:

10. a box cover; 11. a box body; 12. an air inlet pipe; 13. an air exhaust pipe; 14. a tapered interface; 15. An air bag; 16. a nut; 17. a jacket; 18. a bungee cord;

20. an air exhaust assembly.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

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.

Examples

Referring to fig. 1-3, this embodiment provides a vacuum sampling box, including a sampling box, where the sampling box may be a box body or a barrel body without limitation to specific shape, preferably, a preservation box, a ferment barrel or a moisture-proof box with a sealing performance meeting the standard is purchased on the market, the cost problem of customizing the box body is eliminated, cost is effectively reduced, the sampling box includes a box body 11 and a box cover 10 detachably connected to the box body 11, the connection between the box cover 10 and the box body 11 is sealed, so as to prevent external air from entering and internal pressure from leaking, an air inlet pipe 12 and an air exhaust pipe 13 communicated with the inside of the sampling box are fixed on the box cover 10, the air inlet pipe 12 and the air exhaust pipe 13 both pass through the box cover 10, the tail end of the air inlet pipe 12 is connected with a tapered interface 14, a jacket 17 is provided outside the tapered interface 14, a bottom of the tapered interface 14 is provided with a groove for accommodating the tapered interface 14, the box cover 10 is fixed with a nut 16, the air inlet pipe 12 is screwed on the nut 16, an inlet of the air bag 15 is provided outside the tapered interface 14, wherein a slack rope 18 is provided at an opening to prevent the air bag 15 from being connected with a movable valve, the air inlet pipe 15, the air bag from being connected with an air inlet of the air bag, the air bag 15, the air bag, the air inlet pipe 15 is provided with a check valve for preventing the air bag from rotating, the air bag from entering the air bag from being connected with the air bag 2, the air bag from rotating, the air inlet pipe 15, the air bag from rotating, the air extracting component 20 adopts a manual air extracting pump or an air extracting cylinder, the price of the manual air extracting pump or the air extracting cylinder is low, the replacement cost is low after the air extracting component is damaged, and the air extracting efficiency can be improved by matching with an electric air extracting pump.

The use principle is as follows: the air between the box body and the air bag 15 is extracted by the air extraction component 20, so that the pressure outside the air bag 15 is lower than the pressure in the sample bag, the collected air enters the air bag 15 through the air inlet pipe 12 and the conical connector 14, and sampling is finished, wherein when the air bag 15 is sleeved, the air inlet pipe 12 is firstly rotated to enable the conical connector to be separated from the jacket 17, then the air bag 15 is sleeved on the conical connector 14, the air inlet pipe 12 is rotated reversely again to enable the conical connector 14 to enter the groove of the jacket 17, and the opening of the air bag 15 is clamped through the side wall of the groove, so that the air is prevented from leaking from the joint.

It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present disclosure. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.

Claims

1. A vacuum sampling box is characterized in that: including the sampling case, the sampling case includes box (11) and detachable connects case lid (10) on box (11), be fixed with intake pipe (12) and exhaust tube (13) with the inside intercommunication of sampling case on case lid (10), intake pipe (12) below swing joint has air pocket (15), air pocket (15) are located between case lid (10) and box (11), exhaust tube (13) are connected through the pipeline with air exhaust subassembly (20).

2. A vacuum sampling chamber as defined in claim 1 wherein: the air inlet pipe is characterized in that a conical connector (14) is connected to the tail end of the air inlet pipe (12), a jacket (17) is arranged outside the conical connector (14), a nut (16) is fixed on the box cover (10), the air inlet pipe (12) is in threaded connection with the nut (16), and an inlet of the air bag (15) is sleeved on the outer side of the conical connector (14).

3. A vacuum sampling chamber as defined in claim 1 wherein: the air extraction component (20) adopts a manual air extraction pump or an air extraction cylinder.

4. A vacuum sampling chamber as defined in claim 1 wherein: a one-way valve is arranged in the air inlet pipe (12).

5. A vacuum sampling chamber as defined in claim 1 wherein: and a hose is arranged at the inlet of the air bag (15), and the hose is in inserted connection with the conical connector (14).

6. A vacuum sampling chamber as defined in claim 1 wherein: an opening of the air bag (15) is provided with an elastic rope (18).