CN209892938U

CN209892938U - Quick connecting device of gas sampling pipe

Info

Publication number: CN209892938U
Application number: CN201920616115.1U
Authority: CN
Inventors: 王玉霞; 高向娜; 侯言东; 夏智恒
Original assignee: Gansu Center For Disease Control And Prevention Gansu Academy Of Preventive Medicine
Current assignee: Gansu Center For Disease Control And Prevention Gansu Academy Of Preventive Medicine
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-03
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a poisonous and harmful gas collecting device, in particular to a quick connecting device of a gas sampling pipe, which comprises a sampling pipe and a quick connector, wherein the sampling pipe is inserted in the quick connector, the sampling pipe comprises a glass pipe and a rubber cap, the rubber cap wraps the two ends of the sampling pipe, the quick connector comprises a threaded connecting part and a sampling pipe connecting part, the threaded connecting part is connected with the lower end of the sampling pipe connecting part, a connecting cavity is arranged in the sampling pipe connecting part, the connecting cavity is of a cylindrical structure and is arranged along the axial direction of the threaded connecting part, the upper end of the connecting cavity is penetrated by the connecting part, the connecting cavity comprises an inner wall and a bottom surface, the bottom surface is arranged at the lower end of the inner wall, a needle part is arranged in the connecting cavity, the needle part is fixed on the bottom surface, the upper end of the needle part is provided with a needle, the outer edge of the rubber cap is attached to the inner wall and the bottom surface.

Description

Quick connecting device of gas sampling pipe

Technical Field

The utility model relates to a poisonous, harmful gas collection system, concretely relates to quick connecting device of gas sampling pipe.

Background

For some accident sites, especially for the accident sites of chemical enterprises, a large amount of toxic and harmful gases exist, and when accident rescue work is required, the types and the contents of the toxic and harmful gases on the site need to be determined, so that the acquisition and identification work of the toxic and harmful gases is very important, and under the special condition of time-consuming seconds, the time required by the acquisition and identification work is particularly important.

Traditional packed column sampling pipe manufacturing process is earlier with the filler packing in glass pipe, then seals behind the hot melt of glass pipe both ends, need seal the both ends earlier during the use and open, then connect and carry out sampling work on the professional equipment, and the use procedure is loaded down with trivial details, and the waste time has following two not enough when opening and sealing simultaneously: firstly lead to the glass pipe to take place to break when opening easily, consequently cause seal structure to destroy and can not use, secondly the breach department of opening is comparatively sharp, causes the fish tail to the operator easily.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that exists among the above-mentioned prior art, the utility model aims at providing a quick connecting device of gas sampling pipe reduces working procedure, shortens poisonous, harmful gas acquisition time, and fail safe nature when improving the use has solved the problem that exists among the prior art.

The utility model adopts the technical proposal that: a quick connecting device of a gas sampling pipe comprises a sampling pipe and a quick connector, wherein the sampling pipe is inserted in the quick connector, the sampling pipe comprises a glass pipe and a rubber cap, the rubber cap wraps the two ends of the sampling pipe, the quick connector comprises a threaded connecting part and a sampling pipe connecting part, the threaded connecting part is connected to the lower end of the sampling pipe connecting part, a connecting cavity is formed in the sampling pipe connecting part, the connecting cavity is of a cylindrical structure and is arranged along the axial direction of the threaded connecting part, the upper end of the connecting cavity penetrates through the sampling pipe connecting part, the connecting cavity comprises an inner wall and a bottom surface, the bottom surface is arranged at the lower end of the inner wall, a needle part is arranged in the connecting cavity, the needle part is fixed on the bottom, sampling pipe connecting portion and needle portion, needle portion puncture rubber cap, and needle portion stretches into in the glass pipe, and rubber cap outer edge is laminated with inner wall and bottom surface.

And furthermore, an annular boss is arranged on the inner wall, the annular boss protrudes out of the surface of the inner wall, and the annular boss is vertical to the axis direction of the connecting cavity.

Further the annular boss is provided with a plurality of.

Further be equipped with the draw-in groove on the inner wall, be provided with the steel wire lock circle in the draw-in groove, steel wire lock circle inner circle diameter is less than the inner wall diameter, and steel wire lock circle outer lane diameter is greater than the inner wall diameter, and the bottom diameter of draw-in groove is greater than steel wire lock circle outer lane diameter, and draw-in groove and steel wire lock circle are perpendicular with being connected cavity axis direction.

And further, an annular boss and a clamping groove are arranged on the inner wall, a steel wire locking ring is arranged in the clamping groove, and the clamping groove is arranged above the annular boss.

The utility model has the advantages that: through utilizing the rubber cap to seal glass pipe both ends, changed the sealed mode of traditional sampling pipe, the mode of cooperation quick-operation joint grafting simultaneously can carry out the high-speed joint work, and needle portion can impale the rubber cap fast, seals and fixes the glass pipe through annular boss and steel wire lock circle, easy operation, and safe and reliable has practiced thrift the time greatly.

Drawings

FIG. 1 is a schematic view of a half-section structure of the present invention;

FIG. 2 is a schematic view of a half-section structure of an embodiment of the quick coupling;

FIG. 3 is a schematic view of a two-half section structure of an embodiment of the quick coupling;

FIG. 4 is a schematic view of a three-half section structure of an embodiment of the quick coupling.

In the figure: 1. the sampling tube comprises a sampling tube body 101, a glass tube body 102, a rubber cap, a quick connector 2, a threaded connection part 3, a sampling tube connection part 4, a connection cavity 401, a connection cavity 402, an annular boss 402, a clamping groove 403, an inner wall 404, a bottom surface 405, a needle part 5, a needle point 501, a hole 6 and a steel wire locking ring 7.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments: a quick connecting device of a gas sampling pipe comprises a sampling pipe 1 and a quick connector 2, the sampling pipe 1 is inserted in the quick connector 2, the sampling pipe 1 comprises a glass pipe 101 and a rubber cap 102, the rubber cap 102 wraps two ends of the sampling pipe 1, the quick connector 2 comprises a threaded connection part 3 and a sampling pipe connection part 4, the threaded connection part 3 is connected with the lower end of the sampling pipe connection part 4, a connection cavity 401 is arranged in the sampling pipe connection part 4, the connection cavity 401 is of a cylindrical structure and is arranged along the axial direction of the threaded connection part 3, the upper end of the connection cavity 401 penetrates through the sampling pipe connection part 4, the connection cavity 401 comprises an inner wall 404 and a bottom surface 405, the bottom surface 405 is arranged at the lower end of the inner wall 404, a needle part 5 is arranged in the connection cavity 401, the needle part 5 is fixed on the bottom surface 405, the upper end of the needle part 5 is provided with a needle point 501, rubber cap 102 is pricked to needle portion 5, needle portion 5 stretches into in the glass pipe 101, rubber cap 102 is outer along laminating with inner wall 404 and bottom surface 405, form neotype sampling pipe 1 through glass pipe 101 and rubber cap 102, the drawback when having avoided traditional sampling pipe both ends to open, through sampling pipe 1 and the quick-operation joint 2 quick grafting mode, the sampling efficiency is improved, rubber cap 102 is extensive simultaneously cooperatees with the connection cavity 401 inner wall and forms sealedly, the normal clear of sampling work has been guaranteed, 3 lug connection of the threaded connection portion of quick-operation joint 2 are on the sampling instrument, it is simple effective, set up needle portion 5 in the sampling pipe connecting portion 4, can prick rubber cap 102 when sampling pipe 1 installs, hole 6 can communicate sampling pipe 1 and sampling device.

As shown in fig. 2, the first embodiment of the present invention provides an annular boss 402 on the inner wall 404, the inner wall 404 surface protruded by the annular boss 402, the annular boss 402 perpendicular to the axis of the connection cavity 401, the annular boss 402 provided with a plurality of annular bosses 402, the annular boss 402 combined with the rubber cap 102, on the one hand, the sampling tube is fixed, and the sealing effect can be better improved.

As shown in fig. 3, be equipped with draw-in groove 403 on the inner wall 404, be provided with steel wire lock circle 7 in the draw-in groove 403, steel wire lock circle 7 inner circle diameter is less than inner wall 404 diameter, steel wire lock circle 7 outer lane diameter is greater than inner wall 404 diameter, the bottom diameter of draw-in groove 403 is greater than steel wire lock circle 7 outer lane diameter, draw-in groove 403 and steel wire lock circle 7 are perpendicular with connection cavity 401 axis direction, set up steel wire lock circle 7, combine together with rubber cap 102 through steel wire lock circle 7, play the fixed effect of sampling tube on the one hand, the sealed effect of promotion that simultaneously can be better, in steel wire lock circle 7, the degree of depth of external diameter and draw-in groove 403 is injectd in order to satisfy at sampling tube 1 grafting in-process, steel wire lock circle 7 elastic.

As shown in fig. 4, the third embodiment of the present invention is that an annular boss 402 and a clamping groove 403 are arranged on the inner wall 404, a steel wire locking ring 7 is arranged in the clamping groove 403, and the clamping groove 403 is arranged above the annular boss 402, so as to provide double sealing and fixing effects.

During the use, connect in advance quick-operation joint 2 on the sampling instrument, when arriving the scene of an accident, select the sampling pipe 1 that has added suitable adsorbent, directly can carry out the sampling work with sampling pipe 1 both ends insert in quick-operation joint 2.

Claims

1. The utility model provides a quick connecting device of gas sampling pipe which characterized in that: comprises a sampling tube (1) and a quick joint (2), the sampling tube (1) is inserted in the quick joint (2), the sampling tube (1) comprises a glass tube (101) and a rubber cap (102), the rubber cap (102) wraps the two ends of the sampling tube (1), the quick joint (2) comprises a threaded connection part (3) and a sampling tube connection part (4), the threaded connection part (3) is connected with the lower end of the sampling tube connection part (4), a connection cavity (401) is arranged in the sampling tube connection part (4), the connection cavity (401) is of a cylindrical structure, the connection cavity (401) is arranged along the axial direction of the threaded connection part (3), the upper end of the connection cavity (401) penetrates through the sampling tube connection part (4), the connection cavity (401) comprises an inner wall (404) and a bottom surface (405), the bottom surface (405) is arranged at the lower end of the inner wall (404), a needle part (5) is arranged in, needle portion (5) are fixed on bottom surface (405), needle portion (5) upper end is equipped with needle point (501), and threaded connection portion (3), sampling pipe connecting portion (4) and needle portion (5) are run through in hole (6), and rubber cap (102) is pricked in needle portion (5), and in needle portion (5) stretched into glass pipe (101), rubber cap (102) outer edge laminated with inner wall (404) and bottom surface (405).

2. The quick connect device of claim 1, further comprising: the inner wall (404) is provided with an annular boss (402), the annular boss (402) protrudes out of the surface of the inner wall (404), and the annular boss (402) is perpendicular to the axial direction of the connecting cavity (401).

3. The quick connect device of claim 2, further comprising: the annular boss (402) is provided in plurality.

4. The quick connect device of claim 1, further comprising: be equipped with draw-in groove (403) on inner wall (404), be provided with steel wire lock circle (7) in draw-in groove (403), steel wire lock circle (7) inner circle diameter is less than inner wall (404) diameter, and steel wire lock circle (7) outer lane diameter is greater than inner wall (404) diameter, and the bottom diameter of draw-in groove (403) is greater than steel wire lock circle (7) outer lane diameter, and draw-in groove (403) and steel wire lock circle (7) are perpendicular with being connected cavity (401) axis direction.