CN216926253U

CN216926253U - Portable constant-current gas sampler

Info

Publication number: CN216926253U
Application number: CN202220085961.7U
Authority: CN
Inventors: 王灵玉; 晏伟; 郑俊旦; 王志远; 郑章珂; 邬易成; 郑尚飞; 汪斌
Original assignee: Zhejiang Dadi Testing Technology Co ltd
Current assignee: Zhejiang Dadi Testing Technology Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-07-08
Anticipated expiration: 2032-01-13

Abstract

A portable constant-current gas sampler relates to the field of gas collection and comprises a device rear shell and a device front shell, wherein the device rear shell is rotatably connected with the device front shell, a first connecting plate is fixedly arranged on the lower side surface of the device front shell, and a second connecting plate is fixedly arranged on the lower side surface of the device rear shell. The air inlet flow can be controlled through the constant-flow control rod, and the gas collection is convenient to carry out.

Description

Portable constant-current gas sampler

Technical Field

The utility model relates to the field of gas collection, in particular to a portable constant-flow gas sampler.

Background

The gas sampling instrument is a conventional instrument for collecting gas samples in atmospheric environment or operation environment, the whole volume of the existing atmospheric sampling instrument device is large, the existing atmospheric sampling instrument device is not convenient to directly carry to the external environment for atmospheric collection, at present, a sampling tube is mostly used for carrying back to a laboratory for analysis experiments after collecting gas in the atmosphere, but the method also has certain defects, for example, the sampling tube equipment is difficult to adjust the flow of gas inlet, and the gas in the sampling tube collection completion can cause the internal gas to escape or be polluted due to the influence of sealing conditions.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a portable constant-flow gas sampler, which solves the above problems.

The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

a portable constant-current gas sampler comprises a device rear shell and a device front shell, wherein the device rear shell is rotatably connected with the device front shell, a first connecting plate is fixedly arranged on the lower side surface of the device front shell, a second connecting plate is fixedly arranged on the lower side surface of the device rear shell, the first connecting plate and the second connecting plate are arranged correspondingly, the first connecting plate and the second connecting plate are connected through a bolt assembly, an inner space is arranged inside the device rear shell and the device front shell, an air exhaust plate is arranged in the inner space in a sliding mode, a fixing rod is fixedly arranged on the right side of the air exhaust plate, the fixing rod extends into the outer space, a pulling plate is fixedly arranged on the right end surface of the fixing rod, a constant-current air inlet mechanism is arranged between the pulling plate and the right side surface of the device rear shell, an anti-pollution cover closing mechanism is arranged in the air exhaust plate, and a through hole is arranged on the left side of the inner space, the through hole is communicated with the outside, inner ring threads are arranged in the through hole, and a collection pipe is arranged at the through hole.

Beneficially, anti-pollution closing lid mechanism includes slidable mounting in the inside slide bar of dead lever, the slide bar left end is fixed and is equipped with the butt piece, the butt piece is the magnet piece, the slide bar right-hand member extends to in the outer space, the slide bar right-hand member face is fixed and is equipped with a pull ring, can through the pull ring pulling the slide bar and the butt piece.

Beneficially, be equipped with right-hand member sealed lid in the aspirating plate, the inside stopper post that is equipped with of right-hand member sealed lid, the stopper post left end face is equipped with the technology chamfer, the right-hand member sealed lid right-hand member end face is equipped with the metal level, the right-hand member sealed lid right-hand member end face with the butt piece butt, the right-hand member sealed lid can be by the butt piece attracts.

Beneficially, the constant-current air inlet mechanism comprises a constant-current control rod fixedly installed between the right side face of the rear shell of the device and the left end face of the pulling plate, the constant-current control rod is of a telescopic structure, a starting button is fixedly arranged on the upper side face of the rear shell of the device, the starting button is connected with the constant-current control rod through a built-in circuit, when the pulling plate needs to be pulled, the space of the inner space is enlarged to collect gas, the pulling plate can be pulled rightwards manually to carry out simple collection, the starting button can also be pressed, and the constant-current control rod controls the speed of the pulling plate moving rightwards, so that constant-current air inlet is guaranteed.

Beneficially, the middle section of the collecting pipe is provided with an external thread, the external thread is in threaded connection with the inner ring, the outer side face of the collecting pipe is provided with a limiting block, the limiting block is located at the left end of the external thread, the right end face of the limiting block abuts against the left end face of the front shell of the device, the collecting pipe is in threaded connection with the inner ring and then rotates in the forward direction to enable the right end of the collecting pipe to enter the inner space before collection, and when the limiting block abuts against the front shell of the device, the collecting pipe is just screwed to the bottom.

Beneficially, both ends all are equipped with a sealing opening about the collection pipe, the sealing opening outside of collection pipe left end is equipped with the screw thread mouth, screw thread mouth department is equipped with left end sealed lid, left end sealed lid with the screw thread mouth threaded connection, collection pipe right-hand member sealed mouth with the stopper post butt that is equipped with in the right-hand member sealed lid, through right-hand member sealed lid and the left end sealed lid with the left and right ends of collection pipe carry out sealing connection and can make the gas in the collection pipe sealed.

The side structures of the device rear shell and the device front shell are annular structures, and the left end face of the device rear shell is provided with a sealing ring which is abutted against the right end face of the device front shell and can play a role in sealing.

The utility model has the advantages and positive effects that:

according to the utility model, the air exhaust plate and the inner ring threads are arranged in the rear shell and the front shell of the device, so that the device is matched with the collecting pipe, when the collection is carried out, the front shell of the device is connected with the collecting pipe through the outer threads and the inner ring threads, the constant-current control rod is controlled through the starting button, so that the air inlet flow is controlled, when the collection is completed, the left end of the collecting pipe is sealed through the left end sealing cover, the right end sealing cover is pushed to be plugged into the right end of the collecting pipe through the sliding rod, the air in the collecting pipe can be sealed through the left end sealing cover and the right end sealing cover, so that the situation that the rest air is not mixed into the collecting pipe after the collection is completed can be ensured, meanwhile, the device is simple in structure and convenient to carry, the air inlet flow can be controlled through the constant-current control rod, and the air collection is convenient to carry out.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of the overall full-section front view structure of a portable constant-flow gas sampler according to the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 taken along the line A-A;

FIG. 3 is a schematic view of the assembled collection tube, left end seal cap and right end seal cap of FIG. 1 in accordance with the present invention.

The scores in the figures are as follows: 11. a rear shell of the device; 12. a device front housing; 13. a first connecting plate; 14. a second connecting plate; 15. a bolt group; 16. a seal ring; 17. an interior space; 18. an air extraction plate; 19. fixing the rod; 20. pulling the movable plate; 21. a constant current control lever; 22. a start button; 23. a slide bar; 24. a butting block; 25. a right end sealing cover; 26. a plug; 27. inner ring threads; 28. a collection tube; 29. an external thread; 30. a limiting block; 31. a threaded opening; 32. a left end sealing cover; 33. a constant-flow air inlet mechanism; 34. anti-pollution cover closing mechanism.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

The utility model will now be described in detail with reference to fig. 1-3, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, front and rear directions described below correspond to the front, back, left, right, top and bottom directions of the view direction of fig. 1, fig. 1 is a front view of the apparatus of the present invention, and the directions shown in fig. 1 correspond to the front, back, left, right, top and bottom directions of the apparatus of the present invention.

The embodiments of the utility model will be described in further detail below with reference to the accompanying drawings:

referring to fig. 1-3, an embodiment of the present invention is shown: a portable constant-current gas sampler comprises a device rear shell 11 and a device front shell 12, wherein the device rear shell 11 is rotatably connected with the device front shell 12, a first connecting plate 13 is fixedly arranged on the lower side surface of the device front shell 12, a second connecting plate 14 is fixedly arranged on the lower side surface of the device rear shell 11, the first connecting plate 13 and the second connecting plate 14 are correspondingly arranged, the first connecting plate 13 is connected with the second connecting plate 14 through a bolt group 15, an inner space 17 is arranged inside the device rear shell 11 and the device front shell 12, an air exhaust plate 18 is arranged in the inner space 17 in a sliding manner, a fixing rod 19 is fixedly arranged on the right side of the air exhaust plate 18, the fixing rod 19 extends into the outer space, a pulling plate 20 is fixedly arranged on the right end surface of the fixing rod 19, and a constant-current air inlet mechanism 33 is arranged between the pulling plate 20 and the right side surface of the device rear shell 11, an anti-pollution cover closing mechanism 34 is arranged in the air pumping plate 18, a through hole is formed in the left side of the inner space 17 and communicated with the outside, inner ring threads 27 are arranged in the through hole, and a collection pipe 28 is arranged at the position of the through hole.

In addition, in an embodiment, the anti-pollution cover closing mechanism 34 includes a sliding rod 23 slidably mounted inside the fixing rod 19, a contact block 24 is fixed to the left end of the sliding rod 23, the contact block 24 is a magnet block, the right end of the sliding rod 23 extends into the outer space, and a pull ring is fixed to the right end face of the sliding rod 23, and the sliding rod 23 and the contact block 24 can be pulled by the pull ring.

In addition, in an embodiment, a right end sealing cover 25 is arranged in the pumping plate 18, a plug 26 is arranged inside the right end sealing cover 25, a process chamfer is arranged on the left end surface of the plug 26, a metal layer is arranged on the right end surface of the right end sealing cover 25, the right end surface of the right end sealing cover 25 abuts against the abutting block 24, and the right end sealing cover 25 can be attracted by the abutting block 24.

In addition, in an embodiment, the constant-current air intake mechanism 33 includes a constant-current control rod 21 fixedly installed between the right side surface of the device rear case 11 and the left end surface of the pulling plate 20, the constant-current control rod 21 is of a telescopic structure, a start button 22 is fixedly installed on the upper side surface of the device rear case 11, the start button 22 is connected with the constant-current control rod 21 through a built-in circuit, when the pulling plate 20 needs to be pulled to expand the space of the internal space 17 for gas collection, the pulling plate 20 can be pulled rightwards manually for simple collection, the start button 22 can also be pressed, and the constant-current control rod 21 controls the speed of the pulling plate 20 moving rightwards so as to ensure constant-current air intake.

In addition, in an embodiment, an external thread 29 is arranged in the middle section of the collection tube 28, the external thread 29 is in threaded connection with the inner ring thread 27, a limit block 30 is arranged on the outer side surface of the collection tube 28, the limit block 30 is located at the left end of the external thread 29, the right end face of the limit block 30 abuts against the left end face of the device front shell 12, the collection tube 28 is connected with the inner ring thread 27 and then rotates forward to enable the right end of the collection tube 28 to enter the inner space 17 before collection, and when the limit block 30 abuts against the device front shell 12, the collection tube 28 is just screwed to the bottom.

In addition, in one embodiment, a sealing opening is formed at each of the left and right ends of collection tube 28, a threaded opening 31 is formed outside the sealing opening at the left end of collection tube 28, a left sealing cap 32 is disposed at threaded opening 31, left sealing cap 32 is threadedly connected to threaded opening 31, the right sealing opening of collection tube 28 abuts against plug 26 disposed in right sealing cap 25, and the gas in collection tube 28 can be sealed by sealingly connecting right sealing cap 25 and left sealing cap 32 to the left and right ends of collection tube 28.

In one embodiment, the side structures of the device rear case 11 and the device front case 12 are ring structures, a sealing ring 16 is disposed on the left end surface of the device rear case 11, and the sealing ring 16 abuts against the right end surface of the device front case 12 to perform a sealing function.

In specific implementation, before collection, the collection pipe 28 is connected with the inner ring thread 27 and then rotates in a forward direction to enable the right end of the collection pipe 28 to enter the inner space 17, when the limiting block 30 is abutted to the front device shell 12, the collection pipe 28 is just screwed to the bottom, after the collection pipe 28 is screwed into the device, the front device shell 12 and the rear device shell 11 are separated through screwing out the bolt group 15, the right end sealing cover 25 is placed at the left end of the air pumping plate 18, because the right end face of the right end sealing cover 25 is fixedly provided with a metal block which can be attracted by the abutting block 24, the right end sealing cover 25 is connected with the air pumping plate 18, then the front device shell 12 and the rear device shell 11 are connected through the bolt group 15, because of the action of the sealing ring 16, the inner space 17 has sealing performance, gas cannot leak, gas collection is carried out after the device is prepared, and a manual collection mode or an automatic collection mode is selected according to the collection requirement of the device, when the pulling plate 20 needs to be pulled to expand the space of the inner space 17 for gas collection, the pulling plate 20 can be pulled rightwards manually for simple collection, the start button 22 can also be pressed for automatic collection, the constant-current control rod 21 controls the rightwards movement speed of the pulling plate 20 to ensure constant-current air intake, the collection pipe 28 needs to be sealed after collection is completed, firstly, the left end sealing cover 32 is sleeved on the left end of the collection pipe 28, and then the sliding rod 23 is pushed to move leftwards to enable the plug 26 to be plugged into the collection pipe 28, so that the left end and the right end of the collection pipe 28 are both sealed, and the collection pipe 28 is screwed out to complete gas collection.

It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.

Claims

1. A portable constant-flow gas sampler comprises a device rear shell (11) and a device front shell (12), and is characterized in that: the device rear shell (11) is rotatably connected with the device front shell (12), a first connecting plate (13) is fixedly arranged on the lower side surface of the device front shell (12), a second connecting plate (14) is fixedly arranged on the lower side surface of the device rear shell (11), the first connecting plate (13) and the second connecting plate (14) are correspondingly arranged, the first connecting plate (13) and the second connecting plate (14) are connected through a bolt group (15), an inner space (17) is arranged inside the device rear shell (11) and the device front shell (12), an air exhaust plate (18) is arranged in the inner space (17) in a sliding mode, a fixing rod (19) is fixedly arranged on the right side of the air exhaust plate (18), the fixing rod (19) extends into the outer space, a pulling plate (20) is fixedly arranged on the right end face of the fixing rod (19), and a constant-flow air inlet mechanism (33) is arranged between the pulling plate (20) and the right side face of the device rear shell (11), an anti-pollution cover closing mechanism (34) is arranged in the air pumping plate (18), a through hole is formed in the left side of the inner space (17) and communicated with the outside, inner ring threads (27) are arranged in the through hole, and a collection pipe (28) is arranged at the position of the through hole.

2. The portable constant-flow gas sampler according to claim 1, wherein: anti-pollution cover closing mechanism (34) including slidable mounting in slide bar (23) inside dead lever (19), slide bar (23) left end is fixed and is equipped with butt piece (24), butt piece (24) are the magnet piece, slide bar (23) right-hand member extends to in the outer space, slide bar (23) right-hand member face is fixed and is equipped with a pull ring.

3. A portable constant flow gas sampler according to claim 2 wherein: be equipped with right-hand member sealed lid (25) in aspirating plate (18), right-hand member sealed lid (25) inside is equipped with stopper post (26), stopper post (26) left end face is equipped with the technology chamfer, right-hand member sealed lid (25) right-hand member face is equipped with the metal level, right-hand member sealed lid (25) right-hand member face with butt joint piece (24) butt.

4. The portable constant-flow gas sampler according to claim 1, wherein: the constant-current air inlet mechanism (33) comprises a constant-current control rod (21) fixedly installed between the right side face of the rear shell (11) of the device and the left end face of the pulling plate (20), the constant-current control rod (21) is of a telescopic structure, a starting button (22) is fixedly arranged on the upper side face of the rear shell (11) of the device, and the starting button (22) is connected with the constant-current control rod (21) through a built-in circuit.

5. The portable constant-flow gas sampler according to claim 1, wherein: the middle section of the collection pipe (28) is provided with an external thread (29), the external thread (29) is in threaded connection with the inner ring thread (27), the outer side face of the collection pipe (28) is provided with a limiting block (30), the limiting block (30) is located at the left end of the external thread (29), and the right end face of the limiting block (30) is abutted to the left end face of the front shell (12) of the device.

6. The portable constant-flow gas sampler according to claim 5, wherein: both ends all are equipped with a sealing port about gathering pipe (28), gather the sealing port outside of pipe (28) left end and be equipped with screw thread mouth (31), screw thread mouth (31) department is equipped with left end sealed lid (32), left end sealed lid (32) with screw thread mouth (31) threaded connection, gather the stopper post (26) butt that is equipped with in pipe (28) right-hand member sealing port and the sealed lid (25) of right-hand member.

7. The portable constant-flow gas sampler according to claim 1, wherein: the side face structures of the device rear shell (11) and the device front shell (12) are annular structures, a sealing ring (16) is arranged at the left end face of the device rear shell (11), and the sealing ring (16) is abutted to the right end face of the device front shell (12).